KB Financial (KB) 20-F 27 Apr 22 2021 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2021shares
Document Information [Line Items]
Entity Registrant Name	KB Financial Group Inc.
Entity Central Index Key	0001445930
Document Type	20-F
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Document Period End Date	Dec. 31, 2021
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	389,634,335
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Address, Country	KR
Entity File Number	000-53445
Entity Incorporation, State or Country Code	M5
Entity Address, Address Line One	26, Gukjegeumyung-ro 8-gil
Entity Address, Address Line Two	Yeongdeungpo-gu
Entity Address, City or Town	Seoul
Entity Address, Postal Zip Code	07331
ICFR Auditor Attestation Flag	true
Document Accounting Standard	International Financial Reporting Standards
Auditor Name	KPMG Samjong Accounting Corp.
Auditor Location	Seoul, Korea
Auditor Firm ID	1357
American Depositary Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	American Depositary Shares, each representing one share of Common Stock
Trading Symbol	KB
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value ￦5,000 per share
Trading Symbol	KB
Security Exchange Name	NYSE
Business Contact [Member]
Document Information [Line Items]
Entity Address, Country	KR
Contact Personnel Name	Peter BongJoong Kwon
Entity Address, Address Line One	18F, Kookmin Bank
Entity Address, Address Line Two	141, Uisadang-daero
Entity Address, Address Line Three	Yeongdeungpo-gu
Entity Address, City or Town	Seoul
Entity Address, Postal Zip Code	07332
City Area Code	+82-2
Local Phone Number	2073-2845
Contact Personnel Fax Number	+82-2-2073-2848

Consolidated Statements Of Fina

Consolidated Statements Of Financial Position $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)		Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
ASSETS
Cash and due from financial institutions	₩ 31,009,374		$ 26,157,211	₩ 25,608,842
Financial assets at fair value through profit or loss	66,005,815		55,677,617	61,035,455
Derivative financial assets	3,721,370		3,139,072	5,545,385
Loans measured at amortized cost	417,900,273		352,509,720	377,166,984
Financial investments	104,847,871		88,441,899	98,695,426
Investments in associates and joint ventures	448,718	[1]	378,505	771,435	[1]
Property and equipment	5,239,898		4,419,990	5,433,554
Investment property	2,514,944		2,121,420	2,533,539
Intangible assets	3,266,357		2,755,257	3,351,133
Net defined benefit assets	100,083		84,423	50,597
Current income tax assets	98,798		83,339	109,772
Deferred income tax assets	159,093		134,199	65,058
Assets held for sale	237,318		200,184	197,727
Assets of a disposal group held for sale	171,749		144,875	0
Other assets	28,174,173		23,765,646	30,155,037
Total assets	663,895,834	[2]	560,013,357	610,719,944	[2]
LIABILITIES
Financial liabilities at fair value through profit or loss	12,088,980		10,197,368	11,810,058
Derivative financial liabilities	3,682,258		3,106,080	5,222,897
Deposits	372,023,918		313,811,825	338,580,220
Borrowings	56,912,374		48,007,064	49,827,156
Debentures	67,430,188		56,879,113	62,760,687
Provisions	808,604		682,078	714,903
Net defined benefit liabilities	225,521		190,233	239,567
Current income tax liabilities	662,672		558,981	764,981
Deferred income tax liabilities	1,470,981		1,240,811	1,177,799
Insurance liabilities	57,165,936		48,220,950	54,415,296
Other liabilities	43,130,482		36,381,680	41,804,023
Total liabilities	615,601,914	[2]	519,276,183	567,317,587	[2]
TOTAL EQUITY
Share capital	2,090,558		1,763,440	2,090,558
Hybrid securities	2,838,221		2,394,113	1,695,988
Capital surplus	16,940,231		14,289,524	16,723,589
Accumulated other comprehensive income	1,047,274		883,403	630,011
Accumulated other comprehensive income relating to assets of a disposal group held for sale	7,671		6,471	0
Retained earnings	25,672,815		21,655,685	22,540,616
Treasury shares	(1,136,188)		(958,404)	(1,136,188)
Equity attributable to shareholders of the Parent Company	47,460,582		40,034,232	42,544,574
Non-controlling interests	833,338		702,942	857,783
Total equity	48,293,920		40,737,174	43,402,357
Total liabilities and equity	₩ 663,895,834		$ 560,013,357	₩ 610,719,944
[1]	Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million for the years ended December 31, 2020 and 2021, respectively.
[2]	Assets and liabilities of the reporting segments are amounts before intersegment transactions.

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)₩ / shares	Dec. 31, 2021USD ($)$ / shares	Dec. 31, 2020KRW (₩)₩ / shares	Dec. 31, 2019KRW (₩)₩ / shares
Statement of comprehensive income [abstract]
Interest income	₩ 15,210,878	$ 12,830,770	₩ 14,485,747	₩ 14,639,187
Interest income from financial instruments at fair value through other comprehensive income and amortized cost	14,620,490	12,332,762	13,826,382	13,935,124
Interest income from financial instruments at fair value through profit or loss	590,388	498,008	659,365	704,063
Interest expense	(3,981,306)	(3,358,335)	(4,763,473)	(5,442,400)
Net interest income	11,229,572	9,472,435	9,722,274	9,196,787
Fee and commission income	5,323,606	4,490,600	4,527,024	3,879,247
Fee and commission expense	(1,698,023)	(1,432,327)	(1,568,085)	(1,524,243)
Net fee and commission income	3,625,583	3,058,273	2,958,939	2,355,004
Insurance income	16,107,858	13,587,396	14,386,640	12,317,182
Insurance expense	(15,551,147)	(13,117,796)	(14,086,647)	(12,017,670)
Net insurance income	556,711	469,600	299,993	299,512
Net gains on financial instruments at fair value through profit or loss before applying overlay approach	1,160,981	979,318	1,221,610	912,187
Losses on overlay adjustments	(165,677)	(139,753)	(210,244)	(268,315)
Net gains on financial instruments at fair value through profit or loss	995,304	839,565	1,011,366	643,872
Net other operating expenses	(1,923,567)	(1,622,579)	(1,499,930)	(1,063,324)
General and administrative expenses	(7,200,853)	(6,074,106)	(6,814,812)	(6,271,805)
Operating income before provision for credit losses	7,282,750	6,143,188	5,677,830	5,160,046
Provision for credit losses	(1,185,133)	(999,691)	(1,043,498)	(670,185)
Net operating income	6,097,617	5,143,497	4,634,332	4,489,861
Share of profit (loss) of associates and joint ventures	93,526	78,892	(43,750)	16,451
Net other non-operating income (expenses)	(109,537)	(92,397)	189,390	26,886
Net non-operating income (expenses)	(16,011)	(13,505)	145,640	43,337
Profit before income tax expense	6,081,606	5,129,992	4,779,972	4,533,198
Income tax expense	(1,697,225)	(1,431,653)	(1,264,394)	(1,220,570)
Profit for the year	4,384,381	3,698,339	3,515,578	3,312,628
Items that will not be reclassified to profit or loss
Remeasurements of net defined benefit liabilities	(45,510)	(38,389)	(13,434)	(54,523)
Share of other comprehensive income (loss) of associates and joint ventures	51	43	(1)	(105)
Gains (losses) on equity securities at fair value through other comprehensive income	903,398	762,040	822,140	(17,329)
Fair value changes on financial liabilities designated at fair value through profit or loss due to own credit risk	13,715	11,569	8,819	(11,372)
Items that will not be reclassified to profit or loss (Sub Total)	871,654	735,263	817,524	(83,329)
Items that may be reclassified subsequently to profit or loss
Currency translation differences	255,907	215,864	(187,283)	37,861
Gains (losses) on debt securities at fair value through other comprehensive income	(924,698)	(780,007)	(356,572)	35,490
Shares of other comprehensive income (loss) of associates and joint ventures	498	420	(6,846)	7,800
Gains (losses) on cash flow hedging instruments	20,864	17,599	(1,264)	(33,182)
Gains (losses) on hedging instruments of net investments in foreign operations	(57,935)	(48,870)	64,269	(8,900)
Other comprehensive income (loss) arising from separate account	(63,814)	(53,829)	(9,683)	3,364
Gains on overlay adjustment	120,282	101,461	152,125	194,223
Items that may be reclassified subsequently to profit or loss(Sub Total)	(648,896)	(547,362)	(345,254)	236,656
Other comprehensive income for the year, net of tax	222,758	187,901	472,270	153,327
Total comprehensive income for the year	4,607,139	3,886,240	3,987,848	3,465,955
Profit attributable to:
Shareholders of the parent company	4,409,543	3,719,564	3,468,448	3,311,257
Non-controlling interests	(25,162)	(21,225)	47,130	1,371
Profit for the year	4,384,381	3,698,339	3,515,578	3,312,628
Total comprehensive income for the year attributable to:
Shareholders of the parent company	4,610,549	3,889,117	3,966,361	3,464,300
Non-controlling interests	(3,410)	(2,877)	21,487	1,655
Total comprehensive income for the year	₩ 4,607,139	$ 3,886,240	₩ 3,987,848	₩ 3,465,955
Earnings Per Share
Basic earnings per share | (per share)	₩ 11,134	$ 9.39	₩ 8,843	₩ 8,449
Diluted earnings per share | (per share)	₩ 10,890	$ 9.19	₩ 8,730	₩ 8,387

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Equity $ in Thousands, ₩ in Millions	KRW (₩)	USD ($)	Effect of accounting policy changeKRW (₩)	Restated balance after accounting policy changeKRW (₩)	Share capitalKRW (₩)	Share capitalUSD ($)	Share capitalEffect of accounting policy changeKRW (₩)	Share capitalRestated balance after accounting policy changeKRW (₩)	Hybrid securitiesKRW (₩)	Hybrid securitiesUSD ($)	Hybrid securitiesEffect of accounting policy changeKRW (₩)	Hybrid securitiesRestated balance after accounting policy changeKRW (₩)	Capital surplusKRW (₩)	Capital surplusUSD ($)	Capital surplusEffect of accounting policy changeKRW (₩)	Capital surplusRestated balance after accounting policy changeKRW (₩)	Accumulated other comprehensive incomeKRW (₩)	Accumulated other comprehensive incomeUSD ($)	Accumulated other comprehensive incomeEffect of accounting policy changeKRW (₩)	Accumulated other comprehensive incomeRestated balance after accounting policy changeKRW (₩)	Accumulated other comprehensive incomeAssets of a disposal group held for sale.KRW (₩)	Accumulated other comprehensive incomeAssets of a disposal group held for sale.USD ($)	Retained earningsKRW (₩)	Retained earningsUSD ($)	Retained earningsEffect of accounting policy changeKRW (₩)	Retained earningsRestated balance after accounting policy changeKRW (₩)	Treasury sharesKRW (₩)	Treasury sharesUSD ($)	Treasury sharesEffect of accounting policy changeKRW (₩)	Treasury sharesRestated balance after accounting policy changeKRW (₩)	Non-controlling interestsKRW (₩)	Non-controlling interestsUSD ($)	Non-controlling interestsEffect of accounting policy changeKRW (₩)	Non-controlling interestsRestated balance after accounting policy changeKRW (₩)
Balance at beginning at Dec. 31, 2018	₩ 35,713,027				₩ 2,090,558				₩ 0				₩ 17,121,660				₩ 177,806						₩ 17,282,441				₩ (968,549)				₩ 9,111
Comprehensive income for the year
Profit for the year	3,312,628				0				0				0				0						3,311,257				0				1,371
Remeasurements of net defined benefit liabilities	(54,523)				0				0				0				(54,523)						0				0				0
Currency translation differences	37,861				0				0				0				37,577						0				0				284
Gains (losses) on financial instruments at fair value through other comprehensive income and transfer to retained earnings	18,161				0				0				0				36,637						(18,476)				0				0
Share of other comprehensive income (losses) of associates and joint ventures	7,695				0				0				0				7,695						0				0				0
Gains (losses) on cash flow hedging instruments	(33,182)				0				0				0				(33,182)						0				0				0
Losses on hedging instruments of net investments in foreign operations	(8,900)				0				0				0				(8,900)						0				0				0
Other comprehensive income or loss arising from separate account	3,364				0				0				0				3,364						0				0				0
Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk	(11,372)				0				0				0				(11,372)						0				0				0
Gains on overlay adjustments	194,223				0				0				0				194,223						0				0				0
Total comprehensive income for the year	3,465,955				0				0				0				171,519						3,292,781				0				1,655
Transactions with shareholders
Annual dividends paid to shareholders of the parent company	(759,736)				0				0				0				0						(759,736)				0				0
Acquisition and retirement of treasury shares	(267,639)				0				0				0				0						(100,000)				(167,639)				0
Issuance of hybrid securities	973,785				0				399,205				0				0						0				0				574,580
Dividends on hybrid securities	(6,513)				0				0				0				0						(6,513)				0				0
Others	1,178				0				0				1,117				0						0				0				61
Total transactions with shareholders	(58,925)				0				399,205				1,117				0						(866,249)				(167,639)				574,641
Balance at ending at Dec. 31, 2019	39,149,975		₩ 29,918	₩ 35,742,945	2,090,558		₩ 0	₩ 2,090,558	399,205		₩ 0	₩ 0	17,122,777		₩ 0	₩ 17,121,660	368,744		₩ 19,419	₩ 197,225			19,719,472		₩ 10,499	₩ 17,292,940	(1,136,188)		₩ 0	₩ (968,549)	585,407		₩ 0	₩ 9,111
Comprehensive income for the year
Profit for the year	3,515,578				0				0				0				0						3,468,448				0				47,130
Remeasurements of net defined benefit liabilities	(13,434)				0				0				0				(13,145)						0				0				(289)
Currency translation differences	(187,283)				0				0				0				(162,906)						0				0				(24,377)
Gains (losses) on financial instruments at fair value through other comprehensive income and transfer to retained earnings	465,568				0				0				0				229,899						236,648				0				(979)
Share of other comprehensive income (losses) of associates and joint ventures	(6,847)				0				0				0				(6,847)						0				0				0
Gains (losses) on cash flow hedging instruments	(1,264)				0				0				0				(1,264)						0				0				0
Losses on hedging instruments of net investments in foreign operations	64,269				0				0				0				64,269						0				0				0
Other comprehensive income or loss arising from separate account	(9,683)				0				0				0				(9,683)						0				0				0
Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk	8,819				0				0				0				8,819						0				0				0
Gains on overlay adjustments	152,125				0				0				0				152,125						0				0				0
Total comprehensive income for the year	3,987,848				0				0				0				261,267						3,705,096				0				21,485
Transactions with shareholders
Annual dividends paid to shareholders of the parent company	(861,092)				0				0				0				0						(861,092)				0				0
Issuance of hybrid securities	1,296,783				0				1,296,783				0				0						0				0				0
Dividends on hybrid securities	(48,518)				0				0				0				0						(22,860)				0				(25,658)
Non-controlling interests changes in business combination	247,008				0				0				0				0						0				0				247,008
Others	(369,647)				0				0				(399,188)				0						0				0				29,541
Total transactions with shareholders	264,534				0				1,296,783				(399,188)				0						(883,952)				0				250,891
Balance at ending at Dec. 31, 2020	43,402,357	$ 36,611,014			2,090,558	$ 1,763,440			1,695,988	$ 1,430,610			16,723,589	$ 14,106,781			630,011	$ 531,431			₩ 0	$ 0	22,540,616	$ 19,013,594			(1,136,188)	$ (958,404)			857,783	$ 723,562
Comprehensive income for the year
Profit for the year	4,384,381	3,698,339			0	0			0	0			0	0			0	0			0	0	4,409,543	3,719,564			0	0			(25,162)	(21,225)
Remeasurements of net defined benefit liabilities	(45,510)	(38,389)			0	0			0	0			0	0			(45,742)	(38,585)			0	0	0	0			0	0			232	196
Currency translation differences	255,907	215,864			0	0			0	0			0	0			241,273	203,520			0	0	0	0			0	0			14,634	12,344
Gains (losses) on financial instruments at fair value through other comprehensive income and transfer to retained earnings	(21,300)	(17,967)			0	0			0	0			0	0			201,697	170,137			0	0	(223,928)	(188,889)			0	0			931	785
Share of other comprehensive income (losses) of associates and joint ventures	549	463			0	0			0	0			0	0			549	463			0	0	0	0			0	0			0	0
Gains (losses) on cash flow hedging instruments	20,864	17,599			0	0			0	0			0	0			20,864	17,599			0		0	0			0	0			0	0
Losses on hedging instruments of net investments in foreign operations	(57,935)	(48,870)			0	0			0	0			0	0			(57,935)	(48,870)			0		0	0			0	0			0	0
Other comprehensive income or loss arising from separate account	(63,814)	(53,829)			0	0			0	0			0	0			(63,814)	(53,829)			0	0	0	0			0	0			0	0
Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk	13,715	11,569			0	0			0	0			0	0			13,715	11,569			0	0	0	0			0	0			0	0
Gains on overlay adjustments	120,282	101,461			0	0			0	0			0	0			120,282	101,461			0	0	0	0			0	0			0	0
Transfer within equity	0	0			0	0			0	0			0	0			(7,671)	(6,471)			7,671	6,471	0	0			0	0			0	0
Total comprehensive income for the year	4,607,139	3,886,240			0	0			0	0			0	0			423,218	356,994			7,671	6,471	4,185,615	3,530,675			0	0			(9,365)	(7,900)
Transactions with shareholders
Annual dividends paid to shareholders of the parent company	(689,653)	(581,740)			0	0			0	0			0	0			0	0			0	0	(689,653)	(581,740)			0	0			0	0
Quarterly dividends paid to shareholders of the parent company	(292,226)	(246,500)			0	0			0	0			0	0			0	0			0	0	(292,226)	(246,500)			0	0			0	0
Issuance of hybrid securities	1,142,233	963,503			0	0			1,142,233	963,503			0	0			0	0			0	0	0	0			0	0			0	0
Dividends on hybrid securities	(95,682)	(80,711)			0	0			0	0			0	0			0	0			0	0	(71,537)	(60,344)			0	0			(24,145)	(20,367)
Non-controlling interests changes in business combination	1,994	1,682			0	0			0	0			0	0			0	0			0	0	0	0			0	0			1,994	1,682
Transactions with non-controlling interests	192,592	162,458			0	0			0	0			216,853	182,921			(5,955)	(5,022)			0	0	0	0			0	0			(18,306)	(15,441)
Others	25,166	21,228			0	0			0	0			(211)	(178)			0	0			0	0	0	0			0	0			25,377	21,406
Total transactions with shareholders	284,424	239,920			0	0			1,142,233	963,503			216,642	182,743			(5,955)	(5,022)			0	0	(1,053,416)	(888,584)			0	0			(15,080)	(12,720)
Balance at ending at Dec. 31, 2021	₩ 48,293,920	$ 40,737,174			₩ 2,090,558	$ 1,763,440			₩ 2,838,221	$ 2,394,113			₩ 16,940,231	$ 14,289,524			₩ 1,047,274	$ 883,403			₩ 7,671	$ 6,471	₩ 25,672,815	$ 21,655,685			₩ (1,136,188)	$ (958,404)			₩ 833,338	$ 702,942

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Cash flows from operating activities:
Profit for the year	₩ 4,384,381	$ 3,698,339	₩ 3,515,578	₩ 3,312,628
Adjustment for non-cash items
Net gains on financial assets at fair value through profit or loss	(274,515)	(231,561)	(566,447)	(438,567)
Net losses (gains) on derivative financial instruments for hedging purposes	213,996	180,511	(52,696)	(3,835)
Adjustment of fair value of derivative financial instruments	0	0	(3,198)	282
Provision for credit losses	1,185,133	999,691	1,043,498	670,185
Net losses (gains) on financial investments	97,813	82,508	(278,805)	(206,192)
Share of loss (profit) of associates and joint ventures	(93,526)	(78,892)	43,750	(16,451)
Depreciation and amortization expense	850,614	717,515	874,911	784,431
Depreciation and amortization expense on VOBA	156,074	131,653	173,866	192,459
Other net losses (gains) on property and equipment/intangible assets	1,974	1,665	(124,218)	(33,238)
Share-based payments	101,935	85,985	49,364	49,418
Provision for policy reserves	2,761,135	2,329,089	2,709,818	1,546,271
Post-employment benefits	237,315	200,181	235,231	232,701
Net interest income	256,736	216,564	458,210	313,550
Gains on foreign currency translation	(665,282)	(561,183)	(116,786)	(74,488)
Gain on a bargain purchase	(288)	(243)	(145,067)	0
Other expenses	721,459	608,569	524,742	390,074
Adjustment for non-cash items (Sub-total)	5,550,573	4,682,052	4,826,173	3,406,600
Changes in operating assets and liabilities
Financial asset at fair value through profit or loss	(6,149,781)	(5,187,500)	(7,139,647)	(916,415)
Derivative financial instruments	39,343	33,187	(38,376)	(644,342)
Loans measured at fair value through other comprehensive income	(24,618)	(20,766)	81,803	15,536
Loans measured at amortized cost	(41,457,544)	(34,970,514)	(31,126,636)	(21,681,258)
Current income tax assets	10,581	8,925	(54,539)	(9,091)
Deferred income tax assets	(92,967)	(78,420)	(15,108)	803
Other assets	(3,724,562)	(3,141,764)	(9,126,046)	(3,668,385)
Financial liabilities at fair value through profit or loss	759,989	641,071	(3,247,108)	(77,231)
Deposits	32,497,922	27,412,840	27,381,662	28,480,993
Current income tax liabilities	(102,273)	(86,270)	323,313	(266,204)
Deferred income tax liabilities	294,130	248,106	(125,066)	234,992
Other liabilities	1,314,561	1,108,866	3,216,600	1,212,080
Changes in operating assets and liabilities (Sub-total)	(16,635,219)	(14,032,239)	(19,869,148)	2,681,478
Net cash inflow (outflow) from operating activities	(6,700,265)	(5,651,848)	(11,540,694)	9,400,706
Cash flows from investing activities:
Net cash flows from derivative financial instruments for hedging purposes	427	360	(64,177)	(206,680)
Disposal of financial asset at fair value through profit or loss	13,788,604	11,631,045	14,169,758	11,364,615
Acquisition of financial asset at fair value through profit or loss	(12,298,792)	(10,374,350)	(13,923,371)	(12,359,886)
Disposal of financial investments	50,825,909	42,872,973	83,143,443	69,489,132
Acquisition of financial investments	(56,633,996)	(47,772,245)	(92,206,817)	(79,083,472)
Disposal of investments in associates and joint ventures	678,636	572,447	210,266	26,185
Acquisition of investments in associates and joint ventures	(261,881)	(220,903)	(515,342)	(92,200)
Disposal of property and equipment	7,016	5,918	6,465	12,786
Acquisition of property and equipment	(286,613)	(241,765)	(424,862)	(608,736)
Disposal of investment property	177,033	149,332	646,263	94,207
Acquisition of investment property	(118,961)	(100,347)	(53,196)	(806,088)
Disposal of intangible assets	8,203	6,919	14,303	14,694
Acquisition of intangible assets	(191,696)	(161,701)	(182,859)	(333,557)
Net cash flows from changes in ownership of subsidiaries	374,992	316,316	(1,951,245)	91,592
Others	75,105	63,353	142,961	62,984
Net cash outflow from investing activities	(3,856,014)	(3,252,648)	(10,988,410)	(12,334,424)
Cash flows from financing activities:
Net cash flows from derivative financial instruments for hedging purposes	5,870	4,952	(16,202)	(28,631)
Net increase in borrowings	7,321,582	6,175,944	10,683,659	5,027,313
Increase in debentures	121,767,039	102,713,656	119,705,016	93,655,747
Decrease in debentures	(117,509,585)	(99,122,383)	(107,760,800)	(96,145,669)
Increase (decrease) in other payables to trust accounts	(509,106)	(429,444)	2,326,495	(68,648)
Dividends paid to shareholders of the Parent Company	(981,879)	(828,240)	(861,092)	(759,736)
Dividends paid on hybrid securities	(71,537)	(60,344)	(22,860)	(6,513)
Acquisition of treasury shares	0	0	0	(274,317)
Issuance of hybrid securities	1,142,233	963,503	1,296,783	399,205
Increase (decrease) in non-controlling interests	(24,145)	(20,367)	(25,658)	574,580
Redemption of principal elements of lease payments	(253,248)	(213,621)	(235,498)	(229,750)
Others	(65,826)	(55,526)	172,433	134,027
Net cash inflow from financing activities	10,821,398	9,128,130	25,262,276	2,277,608
Effect of exchange rate changes on cash and cash equivalents	158,249	133,488	(171,805)	137,019
Net increase (decrease) in cash and cash equivalents	423,368	357,122	2,561,367	(519,091)
Cash and cash equivalents at the beginning of the year	8,685,092	7,326,100	6,123,725	6,642,816
Cash and cash equivalents at the end of the year	₩ 9,108,460	$ 7,683,222	₩ 8,685,092	₩ 6,123,725

The Parent Company

The Parent Company	12 Months Ended
	Dec. 31, 2021
Entity Information [Abstract]
The Parent Company	1. The Parent Company KB Financial Group Inc. (the “Parent Company”) was incorporated on September 29, 2008, under the Financial Holding Companies Act of Korea. KB Financial Group Inc. and its subsidiaries (the “Group”) derive substantially all of their revenue and income from providing a broad range of banking and related financial services to consumers and corporations. The Parent Company’s main business purpose is to control subsidiaries that engage in the financial business or subsidiaries closely related to the financial business through the stock ownership. The Parent Company’s headquarter is located at 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, The Parent Company’s share capital as of December 31, 2021, is ￦ 2,090,558 million. The Parent Company has been listed on the Korea Exchange (“KRX”) since October 10, 2008, and on the New York Stock Exchange (“NYSE”) for its American Depositary Shares (“ADS”) since September 29, 2008. Number of shares authorized in its Articles of Incorporation is 1,000 million.

Basis of Preparation

Basis of Preparation	12 Months Ended
	Dec. 31, 2021
Basis Of Preparation Of Financial Statements [Abstract]
Basis of Preparation	2. Basis of Preparation 2.1 Application of IFRS The consolidated financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”). IFRS are the standards and related interpretations issued by the International Accounting Standards Board (“IASB”). The preparation of the consolidated financial statements requires the use of certain critical accounting estimates. Management also needs to exercise judgment in applying the Group’s accounting policies. The areas that require a more complex and higher level of judgment or areas that require significant assumptions and estimations are disclosed in Note 2.4. 2.1.1 The Group has applied the following amended standards for the first time for its annual reporting period commencing January 1, 2021. • Amendments to IFRS No.16 Leases – Practical Expedient for COVID-19-Related As a practical expedient, a lessee may elect not to assess whether a rent concession occurring as a direct consequence of the COVID-19 • Amendments to IFRS No.9 Financial Instruments, IAS No.39 Financial Instruments: Recognition and Measurement, IFRS No.7 Financial Instruments: Disclosure, IFRS No.4 Insurance Contracts, and IFRS No.16 Leases – Interest Rate Benchmark Reform In relation to interest rate benchmark reform, the amendments provide a practical expedient allowing entities to change the effective interest rate instead of changing the carrying amount and apply hedge accounting without discontinuance although the interest rate benchmark is replaced in hedging relationship. These amendments do not have a significant impact on the consolidated financial statements. 2.1.2 The Group has changed the following accounting policy for its annual reporting period commencing January 1, 2021. • IAS No.19 Employee Benefits – Attributing Retirement Benefit to Periods of Services The Group maintains defined benefit plan which pays a lump sum retirement benefit to employees who retire at a specific age before the mandatory retirement age and meet required minimum service periods as of retirement date. For the periods prior to the year beginning on January 1, 2021, the Group attributed the retirement benefit of this plan from the date the employee starts working with the Group until the retirement date, regardless of minimum service periods. However, from 2021, the Group retrospectively applied the accounting policy in accordance with the International Financial Reporting Interpretation Committee (“IFRIC”) agenda decision in May 2021, which requires attribution of the retirement benefit over the minimum service periods just before the retirement date. The restated comparative consolidated financial statements reflect adjustments resulting from the retrospective application. The effects of this change in accounting policy to the consolidated statements of financial position as of January 1, 2020, December 31, 2020 and 2021 and to the consolidated statements of comprehensive income for the years ended December 31, 2019, 2020 and 2021, are as follows: 2.1.2.1 Effects on consolidated statements of financial position January 1, 2020 December 31, 2020 December 31, 2021 (In millions of Korean won) Increase in net defined benefit assets ￦ 25,019 ￦ 47,752 ￦ 46,420 Decrease in net defined benefit liabilities 17,258 8,659 — Increase in deferred income tax liabilities 11,627 15,513 12,766 Increase in accumulated other comprehensive income 20,723 17,674 11,034 Increase in retained earnings 9,927 23,224 22,620 2.1.2.2 Effects on consolidated statements of comprehensive income 2019 2020 2021 (In millions of Korean won, except for per share Increase (decrease) in general and administrative expenses ￦ 788 ￦ (18,340 ) ￦ 833 Increase (decrease) in income tax expense (217 ) 5,043 (229 ) Increase (decrease) in other comprehensive income 1,304 (3,049 ) (6,640 ) Increase (decrease) in basic earnings per share (2 ) 34 (2 ) Increase (decrease) in diluted earnings per share (2 ) 33 (2 ) 2.1.3 The following new and amended standards have been published that are not mandatory for December 31, 2021 reporting period and have not been adopted by the Group. • Amendments to IFRS No.16 Leases – COVID-19-Related The application of the practical expedient, a lessee may elect not to assess whether a rent concession occurring as a direct consequence of the COVID-19 for annual reporting periods beginning on or after April 1, 2021, and earlier application is permitted. The Group does not expect that these amendments have a significant impact on the consolidated financial statements. • Amendments to IFRS No.3 Business Combination – Reference to the Conceptual Framework The amendments update a reference of definition of assets and liabilities to qualify for recognition in revised Conceptual Framework for Financial Reporting. However, the amendments add an exception for the recognition of liabilities and contingent liabilities within the scope of IAS No.37 Provisions, Contingent Liabilities and Contingent Assets Levies • Amendments to IAS No.16 Property, Plant and Equipment – Proceeds Before Intended Use The amendments prohibit an entity from deducting from the cost of an item of property, plant and equipment any proceeds from selling items produced while the entity is preparing the asset for its intended use. Instead, the entity will recognize the proceeds from selling such items, and the costs of producing those items, as profit or loss. The amendments should be applied for annual reporting periods beginning on or after January 1, 2022, and earlier application is permitted. The Group does not expect that these amendments have a significant impact on the consolidated financial statements. • Amendments to IAS No.37 Provisions, Contingent Liabilities and Contingent Assets – Onerous Contracts: Cost of Fulfilling a Contract The amendments clarify that the direct costs of fulfilling a contract include both the incremental costs of fulfilling the contract and an allocation of other costs directly related to fulfilling contracts when assessing whether the contract is onerous. The amendments should be applied for annual reporting periods beginning on or after January 1, 2022, and earlier application is permitted. The Group does not expect that these amendments have a significant impact on the consolidated financial statements. • Amendments to IAS No.1 Presentation of Financial Statements – Classification of Liabilities as Current or Non-current The amendments clarify that liabilities are classified as either current or non-current, • Issuance of IFRS No.17 Insurance Contracts (a) Major changes in accounting policy IFRS No.17 Insurance Contracts Insurance Contracts addition, investment components (refunds due to termination and maturity) repaid to a policyholder even if an insured event does not occur, are excluded from insurance revenue, and net insurance income and net investment income are presented separately to enable users of the information to understand the sources of net income. This standard should be applied for annual reporting periods beginning on or after January 1, 2023, and earlier application is permitted for entities that applied IFRS No.9 Financial Instruments (Measurement of Insurance liabilities, etc.) Under IFRS No.17, the Group estimates all cash flows from insurance contracts and measures the insurance liabilities using discount rate that reflects assumptions and risks at the reporting date. In details, the Group identifies a portfolio of insurance contracts that comprises contracts exposed to similar risks and managed together, then separates the contracts with similar profitability within the portfolio as groups of insurance contracts. The groups of insurance contracts are measured as the sum of the estimate of future cash flows (including cash flows related to policy loans and reflecting time value of money, etc.), risk adjustment, and the contractual service margin. With the adoption of IFRS No.17, account of the contractual service margin will be introduced, which means unearned profit that would be recognized by providing insurance service in the future. Meanwhile, reinsurance contracts mean insurance contracts issued by a reinsurance company to compensate claims arising from original insurance contracts issued by other insurance companies. The groups of insurance contracts also apply assumptions consistent with the groups of original insurance contracts when estimating the present value of future cash flows for the groups of insurance contracts ceded. (Recognition and measurement of financial performance) Under IFRS No.17, the Group recognizes insurance revenue on an accrual basis for services (insurance coverage) provided to the policyholder by each annual reporting period, excluding investment component (refunds due to termination and maturity) to be paid to the policyholder regardless of the insured event. In addition, net insurance income and net investment income are presented separately to enable users of the information to understand the sources of net income. The Group also includes the time value of money, financial risk and effects of their fluctuations related to the group of insurance contracts and the Group should select accounting policy whether the insurance finance income or expenses for the periods are divided to profit or loss, or other comprehensive income. (Accounting policy for transition of insurance contracts) Under transition requirements of IFRS No.17, the Group shall adjust the original cost-based measurement to current measurement by applying the fully retrospective approach, modified retrospective approach or fair value approach, for the group of insurance contracts issued before the transition date (the beginning of the annual reporting period immediately preceding initial application date of January 1, 2022). In principle, the Group shall identify, recognize and measure each group of insurance contracts as if IFRS No.17 had always applied before the transition date. If this method is impracticable, the Group can apply the modified retrospective approach or the fair value approach. However, the fair value approach can be applied even though it is possible to apply the fully retrospective approach for the group of insurance contracts with direct participation features that meet specific requirements. Meanwhile, the modified retrospective approach is a way to obtain results very close to the fully retrospective approach by using all reasonable and supportable information available without undue cost or effort. The fair value approach is a way to measure group of insurance contracts using fair value measurements based on IFRS No.13 Fair Value Measurements Key changes in accounting policies expected by adopting IFRS No.17 are as follows: IFRS No.4 IFRS No.17 Insurance liability measurement Measure at cost using the past information Measure at current value using information at the reporting date Need to choose transition method to adjust the existing group of insurance contracts to current measurement at the transition date (among the fully retrospective approach, modified retrospective approach or fair value approach) Recognition of insurance revenue Apply cash basis to recognize the received premium as insurance revenue Recognize revenue by reflecting services provided to the policyholder by each annual reporting period (accrual basis) Include investment component, such as refunds due to termination and maturity, to insurance revenue Exclude investment component (refunds due to termination and maturity) from insurance revenue Net insurance income and net investment income (financial income) are presented separately Deferred acquisition cost Recognize deferred acquisition cost as a separate asset Do not recognize deferred acquisition cost as a separate asset Estimate insurance liability based on net insurance premium (excluding administration expenses) Estimate insurance liability based on operating insurance premium (including administration expenses) (b) Status of preparation for IFRS No.17 adoption In order for the Group to smoothly adopt IFRS No.17, it is necessary to prepare a separate implementation department, implement an accounting system, train executives and employees, and analyze financial impact and etc. Above all, for the adequacy of insurance liability evaluation, the stability of the accounting system and the conformity of system calculations must be secured, and accounting policies and actuarial assumptions must be established reasonably and applied consistently every period. For this, the Group needs to verify the system continually, and prepare various internal control procedures. In particular, the Group shall implement and comply with an internal control over financial reporting suitable for the changed accounting environment so that reliable accounting information can be prepared and disclosed after the adoption of the new accounting standard. The adoption of IFRS No.17 will not only change accounting standard, but will also affect insurance product development, sales strategies, and long-term business strategies. Accordingly, it is necessary for the Group to re-establish The detailed preparations for adoption and future plans are as follows: (KB Insurance Co., Ltd.) Key activity Progress (at the reporting date) Future plan Implementation department (Feb. 2017) Organize the implementation department of IFRS No.17 Continuous operation of the implementation department (Apr. 2018) Expand the implementation department of IFRS No.17 (currently, total 14 personnel who are fully in charge of) Implementation of accounting system (Feb. 2017) Start implementation of the integrated actuarial system (Jun. 2018) Complete implementation of the system Stabilization of the system (dual closing) Implementation of the internal control over financial reporting (Sep. 2018) Start implementation of the accounting system (Nov. 2020) Complete implementation of the system Currently, pilot operation Training for executives and employees Prepare and implement training for executives/head of departments and employees in related departments Plan to expand training target Reporting to management Report implementation of the system, financial effects, etc. Report issues in relation to the dual closing (Prudential Life Insurance Company of Korea Ltd.) Key activity Progress (at the reporting date) Future plan Implementation department (Apr. 2016) Organize the implementation department of IFRS No.17 (currently, total 10 personnel who are fully in charge of) Continuous operation of the implementation department Implementation of accounting system (Nov. 2017) Start implementation of the integrated actuarial system (Nov. 2018) Complete implementation of the system Advancement of the system (dual closing) Implementation of the internal control over financial reporting (Nov. 2020) Start implementation of the accounting system (Dec. 2021) Complete implementation of the system Training for executives and employees Implement training for employees Expansion of training target etc. Reporting to management Report the implementation of the system, financial effect of insurance supervisory accounting for adoption of IFRS No.17 Report issues in relation to dual closing (KB Life Insurance Co., Ltd) Key activity Progress (at the reporting date) Future plan Implementation department (Jul. 2018) Organize the responsive team for IFRS No.17 (Mar. 2019) Organize and operate TF for IFRS No.17 Progress works in relation to transition to new accounting standards Supplement personnel who are fully in charge of, etc. Implementation of accounting system (Mar. 2019) Start implementation of the accounting system (Dec. 2020) Complete implementation of the system Currently, pilot operation Stabilization of the system (dual closing) Implementation of internal control over financial reporting Training for executives and employees Prepare and implement training for executives/head of departments and employees in related departments (total 20 trainings) (Nov. 2020) Open online training (Dec. 2021) Implement non-face-to-face Plan to increase training courses and expand training target Reporting to management Report implementation of the system, financial effects, etc. Report issues in relation to the dual closing and financial effect (c) Financial effect evaluation As the adoption of IFRS No.17 changes the measurement method of insurance liability and insurance revenue recognition, financial volatility is expected to occur in the consolidated financial statements for 2023. In 2021, the Group carried out continual system conformity verification and stabilization, and preparation for dual closing in 2022. Accordingly, in 2021, the preliminary and potential impact of the adoption of IFRS No.17 are disclosed, and detailed results of financial impact will be disclosed in the annual consolidated financial statements for 2022. The Group is currently analyzing the impact of the measurement of insurance contract liabilities after the adoption of IFRS No.17 due to changes in the insurance liability measurement method and revenue recognition method. As of December 31, 2021, the Group has a total insurance contract liabilities of ￦ 57,165,936 million, and savings type insurance accounts for 28% (￦ 4,467,242 million) of the total insurance premium income. • Amendments to IAS No.1 Presentation of Financial Statements – Accounting Policy Disclosure The amendments require an entity to define and disclose their material accounting policy information. IFRS Practice Statement 2 Making Materiality Judgements • Amendments to IAS No.8 Accounting Policies, Changes in Accounting Estimates and Errors – Definition of Accounting Estimates The amendments introduce the definition of accounting estimates and clarify how to distinguish changes in accounting estimates from changes in accounting policies. The amendments should be applied for annual reporting periods beginning on or after January 1, 2023, and earlier application is permitted. The Group does not expect that these amendments have a significant impact on the consolidated financial statements. • Amendments to IAS No.12 Income Taxes – Deferred Tax Related to Assets and Liabilities Arising from a Single Transaction The amendments narrow the scope of the deferred tax recognition exemption so that it no longer applies to transactions that, on initial recognition, give rise to equal taxable and deductible temporary differences. The amendments should be applied for annual reporting periods beginning on or after January 1, 2023, and earlier application is permitted. The Group does not expect that these amendments have a significant impact on the consolidated financial statements. • Annual improvements to IFRS 2018-2020 Annual improvements of IFRS 2018-2020 Cycle should be applied for annual reporting periods beginning on or after January 1, 2022, and earlier application is permitted. The Group does not expect that these amendments have a significant impact on the consolidated financial statements. • IFRS No.1 First-time Adoption of International Financial Reporting Standards • IFRS No.9 Financial Instruments • IFRS No.16 Leases • IAS No.41 Agricultur 2.2 Measurement Basis The consolidated financial statements have been prepared based on the historical cost accounting model unless otherwise specified. 2.3 Functional and Presentation Currency Items included in the financial statements of each entity of the Group are measured using the currency of the primary economic environment in which the entity operates (“functional currency”). The consolidated financial statements are presented in Korean won, which is the Parent Company’s functional and presentation currency. 2.4 Critical Accounting Estimates The Group applies accounting policies and uses judgements, accounting estimates, and assumptions that may have a significant impact on the assets (liabilities) and incomes (expenses) in preparing the consolidated financial statements. Management’s estimates of outcomes may differ from actual outcomes if management’s estimates and assumptions based on management’s best judgment are different from the actual environment. Estimates and underlying assumptions are continually evaluated, and changes in accounting estimates are recognized in the period in which the estimates are changed and in any future periods affected. Uncertainties in estimates and assumptions with significant risks that may result in material adjustments to the consolidated financial statements are as follows: 2.4.1 Income taxes As the income taxes on the Group’s taxable income is calculated by applying the tax laws of various countries and the decisions of tax authorities, there is uncertainty in calculating the final tax effect. If a certain portion of the taxable income is not used for investments, wages, etc. in accordance with the Korean regulation called ‘Special Taxation for Facilitation of Investment and Mutually-beneficial Cooperation’, the Group is liable to pay additional income tax calculated based on the tax laws. Therefore, the effect of recirculation of corporate income should be reflected in current and deferred income tax. As the Group’s income tax is dependent on the actual investments, wages, etc. per each year, there are uncertainties in measuring the final tax effects during the period when the tax law is applied. 2.4.2 Fair value of financial instruments The fair value of financial instruments where no active market exists or where quoted prices are not otherwise available is determined by using valuation techniques. Financial instruments, which are not actively traded in the market and those with less transparent market prices, will have less objective fair values and require broad judgment on liquidity, concentration, uncertainty in market factors, assumptions in fair value determination, and other risks. As described in the significant accounting policies in Note 3.3 Recognition and Measurement of Financial Instruments, diverse valuation techniques are used to determine the fair value of financial instruments, from generally accepted market valuation models to internally developed valuation models that incorporate various types of assumptions and variables. 2.4.3 Allowances and provisions for credit losses The Group recognizes and measures allowances for credit losses of debt instruments measured at amortized cost, debt instruments measured at fair value through other comprehensive income, and lease receivables. Also, the Group recognizes and measures provisions for credit losses of acceptances and guarantees, and unused loan commitments. Accuracy of allowances and provisions for credit losses is dependent upon estimation of expected cash flows of the borrower subject to individual assessment of impairment, and upon assumptions and variables of model used in collective assessment of impairment and estimation of provisions for credit losses of acceptances and guarantees, and unused loan commitments. 2.4.4 Net defined benefit liability The present value of the net defined benefit liability is affected by changes in the various factors determined by the actuarial method. 2.4.5 Impairment of goodwill The recoverable amounts of cash-generating units are determined based on value-in-use 2.4.6 Estimated claims for Incurred But Not Reported (“IBNR”) An amount of IBNR is the total sum of estimated insurance claims that shall be paid for accidents that occurred but have not been reported to the Group and estimated insurance claims that shall be additionally paid upon resumption of payment claims. The Group calculates IBNR by applying statistical methods in risk units prescribed in Detailed Regulations on Supervision of Insurance Business, and records IBNR in reserve for outstanding claims of insurance liability. IBNR based on statistical methods requires significant accounting estimates in determining the application methodology for each accident year (PLDM, ILDM, BFM, and others) and determining the loss development factor. 2.4.7 Assessment of expected credit losses of financial instruments related to COVID-19 The proliferation of COVID-19 COVID-19 COVID-19, (non-impaired). COVID-19

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policy [Abstract]
Significant Accounting Policies	3. Significant Accounting Policies The principal accounting policies applied in the preparation of these consolidated financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated. For the comparative purpose, certain information in the notes for the years ended December 31, 2019 and 2020 have been reclassified to conform to the presentation for the year ended December 31, 2021. 3.1 Consolidation 3.1.1 Subsidiaries Subsidiaries are companies that are controlled by the Group. The Group controls an investee when it is exposed, or has rights, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. Also, the existence and effects of potential voting rights that are currently exercisable or convertible are considered when assessing whether the Group controls the investee. Subsidiaries are fully consolidated from the date when control is transferred to the Group and de-consolidated If a subsidiary uses accounting policies other than those adopted in the consolidated financial statements for like transactions and events in similar circumstances, appropriate adjustments are made to that subsidiary’s financial statements in preparing the consolidated financial statements to ensure conformity with the Group’s accounting policies. Profit or loss and each component of other comprehensive income are attributed to the owners of the parent and to the non-controlling non-controlling non-controlling Transactions with non-controlling non-controlling When the Group loses control, any investment retained in the former subsidiary is recognized at its fair value at the date when control is lost, with the resulting difference recognized in profit or loss. This fair value will be the fair value on initial recognition of a financial asset in accordance with IFRS No.9 or, when appropriate, the cost on initial recognition of an investment in an associate or joint venture. In addition, all amounts previously recognized in other comprehensive income in relation to that subsidiary are accounted for on the same basis as would be required if the Group had directly disposed of the related assets or liabilities. Therefore, amounts previously recognized in other comprehensive income are reclassified to profit or loss. The Group accounts for each business combination by applying the acquisition method. The consideration transferred is measured at fair value, and identifiable assets acquired, and liabilities and contingent liabilities assumed in a business combination are initially measured at acquisition-date fair values. For each business combination, the Group measures non-controlling In a business combination achieved in stages, the Group shall remeasure its previously held equity interest in the acquiree at its acquisition-date fair value and recognize the resulting gain or loss, if any, in profit or loss or other comprehensive income, as appropriate. In prior reporting periods, the Group may have recognized changes in the value of its equity interest in the acquiree in other comprehensive income. If so, the amount that was recognized in other comprehensive income shall be reclassified as profit or loss, or retained earnings, on the same basis as would be required if the Group had directly disposed of the previously held equity interest. The Group applies the book-value method to account for business combinations of entities under common control. Identifiable assets acquired and liabilities assumed in a business combination are measured at their book value on the consolidated financial statements of the Group. In addition, the difference between (a) the sum of consolidated net book value of the assets and liabilities transferred and accumulated other comprehensive income and (b) the consideration paid, is recognized as capital surplus. 3.1.2 Associates and joint ventures Associates are entities over which the Group has significant influence over the financial and operating policy decisions. Generally, if the Group holds 20% or more of the voting power of the investee, it is presumed that the Group has significant influence. Joint ventures are investments in which the Group has joint control over economic activities pursuant to contractual arrangement. Decisions about strategic financial and operating policies require unanimous consent of the parties sharing control. Investments in associates and joint ventures are initially recognized at cost and equity method is applied after initial recognition. The carrying amount is increased or decreased to recognize the Group’s share of the profit or loss of the investee and changes in the investee’s equity after the date of acquisition. Distributions received from an investee reduce the carrying amount of the investment. Unrealized gains and losses resulting from transactions between the Group and associates are eliminated to the extent of the Group’s share in associates. If unrealized losses are an indication of an impairment that requires recognition in the consolidated financial statements, those losses are recognized for the period. If associates or joint ventures use accounting policies other than those of the Group for like transactions and events in similar circumstances, if necessary, adjustments shall be made to make the associates or joint ventures’ accounting policies conform to those of the Group when the associates or joint ventures’ financial statements are used by the Group in applying the equity method. If the Group’s share of losses of associates and joint ventures equals or exceeds its interest in the associates (including long-term interests that, in substance, form part of the Group’s net investment in the associates), the Group discontinues recognizing its share of further losses. After the Group’s interest is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the Group has incurred legal or constructive obligations or made payments on behalf of the investee. The Group determines at each reporting period whether there is any objective evidence that the investments in the associates are impaired. If this is the case, the Group calculates the amount of impairment as the difference between the recoverable amount of the associates and its carrying amount and recognizes the amount as non-operating 3.1.3 Structured entity A structured entity is an entity that has been designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. When the Group decides whether it has power over the structured entities in which the Group has interests, it considers factors such as the purpose, the form, the substantive ability to direct the relevant activities of a structured entity, the nature of its relationship with a structured entity, and the amount of exposure to variable returns. 3.1.4 Funds management The Group manages and operates trust assets, collective investment, and other funds on behalf of investors. These trusts and funds are not consolidated, except for trusts and funds over which the Group has control. 3.1.5 Intragroup transactions Intragroup balances, income, expenses, and any unrealized gains and losses resulting from intragroup transactions are eliminated in full, in preparing the consolidated financial statements. If unrealized losses are an indication of an impairment that requires recognition in the consolidated financial statements, those losses are recognized for the period. 3.2 Foreign Currency 3.2.1 Foreign currency transactions A foreign currency transaction is recorded, at initial recognition in the functional currency, by applying to the foreign currency amount the spot exchange rate between the functional currency and the foreign currency at the date of the transaction. At the end of each reporting period, foreign currency monetary items are translated using the closing rate which is the spot exchange rate at the end of the reporting period. Non-monetary non-monetary Except for the exchange differences for the net investment in a foreign operation and the financial liability designated as a hedging instrument of net investment, exchange differences arising on the settlement of monetary items or on translating monetary items are recognized in profit or loss. When a gain or loss on a non-monetary non-monetary 3.2.2 Foreign operations The results and financial position of a foreign operation, whose functional currency differs from the Group’s presentation currency, are translated into the Group’s presentation currency based on the following procedures. If the functional currency of a foreign operation is not the currency of a hyperinflationary economy, assets and liabilities for each statement of financial position presented (including comparatives) are translated at the closing rate at the end of the reporting period, income and expenses for each statement of comprehensive income presented (including comparatives) are translated using the average exchange rates for the period. All resulting exchange differences are recognized in other comprehensive income. Any goodwill arising on the acquisition of a foreign operation and any fair value adjustments to the carrying amounts of assets and liabilities arising on the acquisition of that foreign operation are treated as assets and liabilities of the foreign operation. Thus, they are expressed in the functional currency of the foreign operation and are translated into the presentation currency at the closing rate. On the disposal of a foreign operation, the cumulative amount of the exchange differences relating to that foreign operation, recognized in other comprehensive income and accumulated in the separate component of equity, is reclassified from equity to profit or loss (as a reclassification adjustment) when the gain or loss on disposal is recognized. On the partial disposal of a subsidiary that includes a foreign operation, the Group re-attributes non-controlling 3.2.3 Translation of the net investment in a foreign operation A monetary item that is receivable from or payable to a foreign operation, for which settlement is neither planned nor likely to occur in the foreseeable future is, in substance, a part of the Group’s net investment in that foreign operation, then foreign currency difference arising from that monetary item is recognized in the other comprehensive income and shall be reclassified to profit or loss on disposal of the net investment. 3.3 Recognition and Measurement of Financial Instruments 3.3.1 Initial recognition The Group recognizes a financial asset or a financial liability in its consolidated statement of financial position when the Group becomes party to the contractual provisions of the instrument. A regular way purchase or sale of financial assets (a purchase or sale of a financial asset under a contract whose terms require delivery of the asset within the time frame established generally by regulation or convention in the marketplace concerned) is recognized and derecognized using trade date accounting. For financial reporting purpose, the Group classifies (a) financial assets as financial assets at fair value through profit or loss, financial assets at fair value through other comprehensive income, or financial assets at amortized cost and (b) financial liabilities as financial liabilities at fair value through profit or loss, or other financial liabilities. These classifications are based on the business model for managing financial instruments and the contractual cash flow characteristics of the financial instrument at initial recognition. At initial recognition, a financial asset or financial liability is measured at its fair value plus or minus, in the case of a financial asset or financial liability not at fair value through profit or loss, transaction costs that are directly attributable to the acquisition or issue of the financial asset or financial liability. The fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The fair value of a financial instrument on initial recognition is normally the transaction price (that is, the fair value of the consideration given or received) in an arm’s length transaction. 3.3.2 Subsequent measurement After initial recognition, financial instruments are measured at amortized cost or fair value based on classification at initial recognition. 3.3.2.1 Amortized cost The amortized cost of a financial asset or financial liability is the amount at which the financial asset or financial liability is measured at initial recognition minus the principal repayments, plus or minus the cumulative amortization using the effective interest method of any difference between that initial amount and the maturity amount and, for financial assets, adjusted for any loss allowance. 3.3.2.2 Fair value The Group uses quoted price in an active market which is based on listed market price or dealer price quotations of financial instruments traded in an active market as best estimate of fair value. A financial instrument is regarded as quoted in an active market if quoted prices are readily and regularly available from an exchange, dealer, broker, industry group, pricing service or regulatory agency, and those prices represent actual and regularly occurring market transactions on an arm’s length basis. If there is no active market for a financial instrument, fair value is determined either by using a valuation technique or independent third-party valuation service. Valuation techniques include using recent arm’s length market transactions between knowledgeable and willing parties, if available, referencing the current fair value of another instrument that is substantially the same, discounted cash flow analysis, and option pricing models. The Group uses valuation models that are commonly used by market participants and customized for the Group to determine fair values of common over-the-counter In addition, the fair value information recognized in the consolidated statement of financial position is classified into the following fair value hierarchy, reflecting the significance of the input variables used in the fair value measurement. Level 1 : Quoted prices (unadjusted) in active markets for identical assets or liabilities that the Group can access at the measurement date Level 2 : Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly Level 3 : Unobservable inputs for the asset or liability The fair value measurement is categorized in its entirety in the same level of the fair value hierarchy as the lowest level input that is significant to the entire measurement. For this purpose, the significance of an input is assessed against the fair value measurement in its entirety. If a fair value measurement uses observable inputs that require significant adjustment using unobservable inputs, that measurement is a Level 3 measurement. If the valuation technique does not reflect all factors which market participants would consider in pricing the asset or liability, the fair value is adjusted to reflect those factors. Those factors include counterparty credit risk, bid-ask The Group uses valuation technique which maximizes the use of market inputs and minimizes the use of entity-specific inputs. It incorporates all factors that market participants would consider in pricing the asset or liability and is consistent with economic methodologies applied for pricing financial instruments. Periodically, the Group calibrates the valuation technique and tests its validity using prices of observable current market transactions of the same instrument or based on other relevant observable market data. 3.3.3 Derecognition Derecognition is the removal of a previously recognized financial asset or financial liability from the consolidated statement of financial position. The derecognition criteria for financial assets and financial liabilities are as follows: 3.3.3.1 Derecognition of financial assets A financial asset is derecognized when the contractual rights to the cash flows from the financial assets expire or the Group transfers substantially all the risks and rewards of ownership of the financial asset, or the Group neither transfers nor retains substantially all the risks and rewards of ownership of the financial asset and the Group has not retained control. Therefore, if the Group does not transfer substantially all the risks and rewards of ownership of the financial asset, the Group continues to recognize the financial asset to the extent of its continuing involvement in the financial asset. If the Group transfers the contractual rights to receive the cash flows of the financial asset but retains substantially all the risks and rewards of ownership of the financial asset, the Group continues to recognize the transferred asset in its entirety and recognize a financial liability for the consideration received. The Group writes off a financial asset when the Group has no reasonable expectations of recovering a financial asset in its entirety or a portion thereof. In general, the Group considers write-off write-off write-off, written-off written-off 3.3.3.2 Derecognition of financial liabilities A financial liability is derecognized from the consolidated statement of financial position when it is extinguished (i.e., the obligation specified in the contract is discharged, canceled or expires). 3.3.4 Offsetting A financial asset and a financial liability are offset, and the net amount is presented in the consolidated statement of financial position when, and only when, the Group currently has a legally enforceable right to set off the recognized amounts and intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. The legally enforceable right must not be contingent on a future event and must be legally enforceable in the normal course of business, the event of default, and the event of insolvency or bankruptcy of the Group and all of the counterparties. 3.4 Cash and Due from Financial Institutions Cash and due from financial institutions include cash on hand, foreign currency, and short-term, highly liquid investments that are readily convertible to known amounts of cash and which are subject to an insignificant risk of changes in value, and due from financial institutions. Cash and due from financial institutions are measured at amortized cost. 3.5 Non-derivative 3.5.1 Financial assets at fair value through profit or loss Financial assets are classified as financial assets at fair value through profit or loss unless they are classified as financial assets at amortized cost or at fair value through other comprehensive income. The Group may designate certain financial assets upon initial recognition as at fair value through profit or loss when the designation eliminates or significantly reduces a measurement or recognition inconsistency (sometimes referred to as an ‘accounting mismatch’) that would otherwise arise from measuring assets or liabilities or recognizing the gains and losses on them on different bases. After initial recognition, a financial asset at fair value through profit or loss is measured at fair value and gains or losses arising from a change in fair value are recognized in profit or loss. Interest income using the effective interest method and dividend income from financial assets at fair value through profit or loss are also recognized in profit or loss. 3.5.2 Financial assets at fair value through other comprehensive income The Group classifies below financial assets as financial assets at fair value through other comprehensive income: • Debt instruments that are held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets, and where the assets’ cash flows represent solely payments of principal and interest on the principal amount outstanding and; • Equity instruments that are not held for short-term trading but held for strategic investment, and designated as financial assets at fair value through other comprehensive income After initial recognition, a financial asset at fair value through other comprehensive income is measured at fair value. Gains or losses arising from a change in fair value, other than dividend income, interest income calculated using the effective interest method and exchange differences arising on monetary items which are recognized directly in profit or loss, are recognized in other comprehensive income in equity. When the financial assets at fair value through other comprehensive income is disposed of, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss. However, cumulative gain or loss of equity instruments designated at fair value through other comprehensive income is reclassified to retained earnings not to profit or loss at disposal. A financial asset at fair value through other comprehensive income denominated in foreign currency is translated at the closing rate. Exchange differences resulting from changes in amortized cost are recognized in profit or loss, and other changes are recognized in equity. 3.5.3 Financial assets at amortized cost A financial asset, which is held within the business model whose objective is achieved by collecting contractual cash flows, and where the assets’ cash flows represent solely payments of principal and interest on the principal amount outstanding, is classified as a financial asset at amortized cost. After initial recognition, a financial asset at amortized cost is measured at amortized cost using the effective interest method and interest income is calculated using the effective interest method. 3.6 Expected Credit Losses of Financial Assets (Debt Instruments) The Group recognizes loss allowances for expected credit losses at the end of the reporting period for financial assets at amortized cost and fair value through other comprehensive income except for financial assets at fair value through profit or loss. Expected credit losses are estimated at present value of probability-weighted amount that is determined by evaluating a range of possible outcomes. The Group measures expected credit losses by reflecting all reasonable and supportable information that is available without undue cost or effort at the reporting date about past events, current conditions, and forecasts of future economic conditions. The approaches of measuring expected credit losses in accordance with IFRS are as follows: • General approach: for financial assets and unused loan commitments not subject to the below 2 approaches • Simplified approach: for trade receivables, contract assets, and lease receivables • Credit-impaired approach: for financial assets that are credit-impaired at the time of acquisition Application of general approach is differentiated depending on whether credit risk has increased significantly after initial recognition. If the credit risk on a financial instrument has not increased significantly since initial recognition, the Group measures loss allowances for that financial instrument at an amount equal to 12-month The Group assesses whether the credit risk has increased significantly using the following criteria, and if one or more of the following criteria are met, it is deemed as significant increase in credit risk. Criterion of more than 30 days past due is applied to all subsidiaries, and other criteria are applied selectively considering specific indicators of each subsidiary or additionally considering specific indicators of each subsidiary. If the contractual cash flows of a financial asset have been renegotiated or modified, the Group assesses whether the credit risk has increased significantly using the same following criteria. • More than 30 days past due • Decline in credit rating at the end of the reporting period by certain notches or more compared to the time of initial recognition • Subsequent managing ratings below certain level in the early warning system • Debt restructuring (except for impaired financial assets) and • Credit delinquency information of Korea Federation of Banks, etc. Under simplified approach, the Group always measures loss allowances at an amount equal to lifetime expected credit losses. Under credit-impaired approach, the Group only recognizes the cumulative changes in lifetime expected credit losses since initial recognition as loss allowances at the end of the reporting period. In assessing credit impairment, the Group uses definition of default as in the new Basel Accord which rules calculation of Capital Adequacy Ratio. The Group generally considers the loan to be credit-impaired if one or more of the following criteria are met: • 90 days or more past due • Legal proceedings related to collection • A borrower registered on the credit management list of Korea Federation of Banks • A corporate borrower with the credit rating C and D • Refinancing and • Debt restructuring, etc. 3.6.1 Forward-looking information The Group uses forward-looking information, when determining whether credit risk has increased significantly and measuring expected credit losses. The Group assumes that the risk components have a constant correlation with the economic cycle and uses statistical methodologies to estimate the relation between key macroeconomic variables and risk components for the expected credit losses. The correlation between the major macroeconomic variables and the credit risk are as follows: Key macroeconomic variables Correlation between the major macroeconomic Domestic GDP growth rate ( - Composite stock index ( - Rate of change of construction investment ( - Rate of change of housing transaction price index ( - Interest rate spread ( + Private consumption growth rate ( - Change of call rate compared to the previous year (%p) ( + Rate of change of household loan ( - Forward-looking information used in calculation of expected credit losses is based on the macroeconomic forecasts utilized by management of the Group for its business plan considering reliable external agency’s forecasts and others. The forward-looking information is generated by KB Research with a comprehensive approach to capture the possibility of various economic forecast scenarios that are derived from the internal and external viewpoints of the macroeconomic situation. The Group determines the macroeconomic variables to be used in forecasting future conditions of the economy, considering the direction of the forecast scenario and the significant relationship between macroeconomic variables and time series data. And there are some changes compared to the macroeconomic variables used in the previous year. In order to reflect additional credit risk for financial assets whose industries are highly affected by COVID-19, 3.6.2 Measuring expected credit losses on financial assets at amortized cost The expected credit losses of financial assets at amortized cost are measured as present value of the difference between the contractual cash flows to be received and the cash flows expected to be received. The Group estimates expected future cash flows for financial assets that are individually significant. The Group selects the individually significant financial assets by comprehensively considering quantitative and qualitative factors (such as debt restructuring or negative net assets, etc.) among financial assets with the credit risk has increased significantly or credit-impaired (individual assessment of impairment). For financial assets that are not individually significant, the Group collectively estimates expected credit losses by grouping loans with a homogeneous credit risk profile (collective assessment of impairment). 3.6.2.1 Individual assessment of impairment Individual assessment of impairment losses is performed using management’s best estimate on the present value of expected future cash flows. The Group uses all the available information including financial condition of the borrower such as operating cash flow and net realizable value of any collateral held. 3.6.2.2 Collective assessment of impairment Collective assessment of impairment losses is performed by using a methodology based on historical loss experience and reflecting forward-looking information. Such a process incorporates factors such as type of collateral, type of product, type of borrower, credit rating, size of portfolio, and recovery period and applies Probability of Default (“PD”) on a group of assets and Loss Given Default (“LGD”) by type of recovery method. Also, the Group applies certain assumptions to model expected credit losses assessment and to determine input based on loss experience and forward-looking information. These models and assumptions are periodically reviewed to reduce the gap between loss estimate and actual loss experience. The lifetime expected credit losses are measured by applying the PD to the carrying amount calculated by deducting the expected principal repayment amount from the carrying amount as of the reporting date and the LGD adjusted to reflect changes in the carrying amount. 3.6.3 Measuring expected credit losses on financial assets at fair value through other comprehensive income The Group measures expected credit losses on financial assets at fair value through other comprehensive income in a manner that is consistent with the requirements that are applicable to financial assets at amortized cost. However, loss allowances are recognized in other comprehensive income. Upon disposal or repayment of financial assets at fair value through other comprehensive income, the amount of loss allowances is reclassified from other comprehensive income to profit or loss. 3.7 Derivative Financial Instruments The Group enters into numerous derivative financial instrument contracts such as currency forwards, interest rate swaps, currency swaps, and others for trading purposes or to manage its interest rate risk, currency risk, and others. The Group’s derivative financial instruments business focuses on addressing the needs of the Group’s corporate clients to hedge their risk exposure and to hedge the Group’s risk exposure that results from such client contracts. These derivative financial instruments are presented as derivative financial instruments in the consolidated financial statements irrespective of transaction purpose and subsequent measurement requirement. The Group designates certain derivative financial instruments as hedging instruments to hedge the risk of changes in fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge) and the risk of changes in cash flow (cash flow hedge). The Group designates certain derivative and non-derivative At the inception of the hedging relationship, there is formal designation and documentation of the hedging relationship and the Group’s risk management objective and strategy for undertaking the hedge. This documentation includes identification of the hedging instrument, the hedged item, the nature of the risk being hedged, the inception date of hedging relationship and how the Group will assess the hedging instrument’s effectiveness in offsetting the changes in the hedged item’s fair value or cash flows attributable to the hedged risk. Derivative financial instruments are initially recognized at fair value. After initial recognition, derivative financial instruments are measured at fair value, and changes therein are accounted for as described below. 3.7.1 Derivative financial instruments held for trading All derivative financial instruments, except for derivatives that are designated and qualify for hedge accounting, are measured at fair value. Gains or losses arising from changes in fair value are recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss. 3.7.2 Derivative financial instruments for fair value hedges If derivative financial instruments are designated and qualify for fair value hedges, changes in fair value of the hedging instrument and changes in fair value of the hedged item attributable to the hedged risk are recognized in profit or loss as part of other operating income or expenses. If the hedged items are equity instruments for which the Group has elected to present changes in fair value in other comprehensive income, changes in fair value of the hedg

Financial Risk Management

Financial Risk Management	12 Months Ended
	Dec. 31, 2021
Finacial Risk Management Abstract [Abstract]
Financial Risk Management	4. Financial Risk Management 4.1 Summary 4.1.1 Overview of financial risk management policy The financial risks that the Group is exposed to are credit risk, market risk, liquidity risk, operational risk, and others. This note regarding financial risk management provides information about the risks that the Group is exposed to and about its objectives, policies, risk assessment and management procedures, and capital management. Additional quantitative information is disclosed throughout the consolidated financial statements. The Group’s risk management system focuses on efficiently supporting long-term strategy and management decisions of the Group by increasing risk transparency, preventing risk transfer between subsidiaries and preemptive response to rapidly changing financial environments. Credit risk, market risk, operational risk, interest rate risk, insurance risk, liquidity risk, credit concentration risk, strategy risk, and reputation risk are recognized as the Group’s significant risks and measured and managed by quantifying them in the form of internal capital or Value at Risk (“VaR”) using statistical methods. 4.1.2 Risk management organization 4.1.2.1 Risk Management Committee The Risk Management Committee, as the ultimate decision-making body, deals with risk-related issues, such as establishing risk management strategies in accordance with the strategic direction determined by the board of directors, determining the affordable level of risk appetite, reviewing the level of risk and the status of risk management activities, approving the application of risk management systems, methodologies, and major improvements, and establishing and approving risk management policies and procedures to timely recognize, measure, monitor, and control risks arising from various transactions by the Group. 4.1.2.2 Risk Management Council The Risk Management Council is responsible for consulting on matters delegated by the Risk Management Committee and requests for review by the Management Executive Committee, consulting on details of each subsidiary’s risk management policies and procedures, monitoring the Group’s risk management status, and establishing and implementing necessary measures. 4.1.2.3 Risk Management Department The Risk Management Department performs the Group’s risk management detailed policies, procedures, and business processes, and is responsible for calculating the Group’s risk-weighted assets, monitoring and managing internal capital limits. 4.2 Credit Risk 4.2.1 Overview of credit risk Credit risk is the risk of loss from the portfolio of assets held due to the counterparty’s default, breach of contract, and deterioration of credit quality. For risk management purposes, the Group manages all factors of credit risk exposure, such as default risk of individual borrowers, country risk, and risk of specific sectors in an integrated way. 4.2.2 Credit risk management The Group measures the expected loss and internal capital for the assets subject to credit risk management, including on-balance off-balance In addition, to prevent excessive concentration of exposures by borrower and industry, the total exposure limit at the Group level is introduced, applied, and managed to control the credit concentration risk. All of the Kookmin Bank’s loan customers (individuals and corporates) are assigned a credit rating and managed by a comprehensive internal credit evaluation system. For individuals, the credit rating is evaluated by utilizing personal information, income and job information, asset information, and bank transaction information. For corporates, the credit rating is evaluated by analyzing and utilizing financial and non-financial The credit rating, once assigned, serves as the fundamental instrument in Kookmin Bank’s credit risk management, and is applied in a wide range of credit risk management processes, including credit approval, credit limit management, loan pricing, and assessment of allowances for credit losses. For corporates, Kookmin Bank conducts a regular credit evaluation at least once a year, and the review and supervision departments regularly validate the adequacy of credit ratings to manage credit risks. KB Kookmin Card Co., Ltd.’s credit scoring system is divided into Application Scoring System (“ASS”) and Behavior Scoring System (“BSS”). For applications that meet the eligibility criteria for card issuance, the card will be issued only if the ASS credit rating is above the standard. KB Kookmin Card Co., Ltd.’s internal information, external information from the credit bureau company and others, and personal information on the application are used to calculate the ASS credit rating. The BSS, which is recalculated on a weekly basis, predicts the delinquency probability of cardholders, and utilizes it to monitor cardholders and portfolio risk. In order to establish a credit risk management system, the Group manages credit risk by forming a separate risk management organization. In particular, independently of the Sales Group, the Credit Management & Analysis Group of Kookmin Bank, a subsidiary, is in charge of loan policy, loan system, credit rating, credit analysis, follow-up 4.2.3 Maximum exposure to credit risk The Group’s maximum exposures to credit risk without consideration of collateral values in relation to financial instruments other than equity securities as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial assets Due from financial institutions measured at amortized cost* ￦ 22,720,091 ￦ 28,362,387 Financial assets at fair value through profit or loss: Due from financial institutions measured at fair value through profit or loss 100,094 200,742 Securities measured at fair value through profit or loss 58,415,100 63,002,692 Loans measured at fair value through profit or loss 337,983 269,296 Financial instruments indexed to the price of gold 89,965 113,622 Derivatives 5,545,385 3,721,370 Loans measured at amortized cost* 377,166,984 417,900,273 Financial investments: Securities measured at fair value through other comprehensive income 58,456,889 56,259,511 Securities measured at amortized cost* 36,870,229 44,471,628 Loans measured at fair value through other comprehensive income 293,409 313,604 Other financial assets* 14,167,689 10,755,350 574,163,818 625,370,475 Off-balance Acceptances and guarantees contracts 8,548,928 10,199,689 Financial guarantee contracts 4,964,468 6,892,464 Commitments 159,133,983 170,218,143 172,647,379 187,310,296 ￦ 746,811,197 ￦ 812,680,771 * After netting of allowance 4.2.4 Credit risk of loans The Group maintains allowances for loan losses associated with credit risk of loans to manage its credit risk. The Group assesses expected credit losses and recognizes loss allowances of financial assets at amortized cost and financial assets at fair value through other comprehensive income. Financial assets at fair value through profit or loss are excluded. Expected credit losses are a probability-weighted estimate of possible credit losses occurring in a certain range by reflecting reasonable and supportable information that is reasonably available at the end of the reporting period without undue cost or effort, including information about past events, current conditions, and forecasts of future economic conditions. The Group measures the expected credit losses of loans classified as financial assets at amortized cost, by deducting allowances for credit losses. The expected credit losses of loans classified as financial assets at fair value through other comprehensive income are presented in other comprehensive income in the consolidated financial statements. 4.2.4.1 Credit risk exposure Credit qualities of loans as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Loans measured at amortized cost* Corporate Grade 1 ￦ 93,033,311 ￦ 4,646,801 ￦ 7,042 ￦ — ￦ 97,687,154 Grade 2 61,701,031 7,060,916 7,817 — 68,769,764 Grade 3 2,702,369 2,507,455 3,055 — 5,212,879 Grade 4 611,743 1,085,704 8,562 — 1,706,009 Grade 5 18,792 394,935 2,162,732 — 2,576,459 158,067,246 15,695,811 2,189,208 — 175,952,265 Retail Grade 1 163,261,012 3,536,290 6,789 — 166,804,091 Grade 2 8,828,445 4,197,409 34,896 — 13,060,750 Grade 3 2,519,004 1,322,878 9,012 — 3,850,894 Grade 4 225,262 402,881 8,352 — 636,495 Grade 5 39,466 636,361 672,397 — 1,348,224 174,873,189 10,095,819 731,446 — 185,700,454 Credit card Grade 1 8,210,540 412,555 — — 8,623,095 Grade 2 5,831,625 708,405 — — 6,540,030 Grade 3 1,526,382 1,216,434 — — 2,742,816 Grade 4 16,978 247,241 — — 264,219 Grade 5 2,101 118,907 506,462 — 627,470 15,587,626 2,703,542 506,462 — 18,797,630 348,528,061 28,495,172 3,427,116 — 380,450,349 Loans measured at fair value through other comprehensive income Corporate Grade 1 235,469 — — — 235,469 Grade 2 57,940 — — — 57,940 Grade 3 — — — — — Grade 4 — — — — — Grade 5 — — — — — 293,409 — — — 293,409 293,409 — — — 293,409 ￦ 348,821,470 ￦ 28,495,172 ￦ 3,427,116 ￦ — ￦ 380,743,758 December 31, 2021 12-month Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Loans measured at amortized cost* Corporate Grade 1 ￦ 111,284,284 ￦ 5,345,956 ￦ 3,705 ￦ — ￦ 116,633,945 Grade 2 68,050,042 7,847,126 4,338 — 75,901,506 Grade 3 5,323,745 2,850,266 2,949 — 8,176,960 Grade 4 586,857 1,037,461 7,570 — 1,631,888 Grade 5 12,877 352,046 2,143,708 — 2,508,631 185,257,805 17,432,855 2,162,270 — 204,852,930 Retail Grade 1 170,810,128 4,593,302 11,609 — 175,415,039 Grade 2 9,093,868 4,209,451 35,097 — 13,338,416 Grade 3 3,410,624 1,414,439 23,467 — 4,848,530 Grade 4 235,150 400,029 17,998 — 653,177 Grade 5 495,987 445,588 710,341 — 1,651,916 184,045,757 11,062,809 798,512 — 195,907,078 Credit card Grade 1 10,640,412 1,113,400 — — 11,753,812 Grade 2 3,919,053 1,027,546 — — 4,946,599 Grade 3 1,360,908 1,412,951 — — 2,773,859 Grade 4 82,565 608,250 — — 690,815 Grade 5 1,267 130,712 527,256 — 659,235 16,004,205 4,292,859 527,256 — 20,824,320 385,307,767 32,788,523 3,488,038 — 421,584,328 Loans measured at fair value through other comprehensive income Corporate Grade 1 233,868 — — — 233,868 Grade 2 79,736 — — — 79,736 Grade 3 — — — — — Grade 4 — — — — — Grade 5 — — — — — 313,604 — — — 313,604 313,604 — — — 313,604 ￦ 385,621,371 ￦ 32,788,523 ￦ 3,488,038 ￦ — ￦ 421,897,932 * Before netting of allowance Credit qualities of loans graded according to internal credit ratings as of December 31, 2020 and 2021, are as follows: Range of probability Retail Corporate Grade 1 0.0 ~ 1.0 1 ~ 5 grade AAA Grade 2 1.0 ~ 5.0 6 ~ 8 grade BBB ~ BB Grade 3 5.0 ~ 15.0 9 ~ 10 grade BB- Grade 4 15.0 ~ 30.0 11 grade B- Grade 5 30.0 ~ 12 CC or under 4.2.4.2 Quantification of the extent to which collateral and other credit enhancements mitigate credit risk of loans as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit losses Total Non-impaired Impaired (In millions of Korean won) Guarantees ￦ 79,088,720 ￦ 5,732,814 ￦ 187,512 ￦ 85,009,046 Deposits and savings 5,210,681 149,745 67,047 5,427,473 Property and equipment 11,607,675 808,476 120,471 12,536,622 Real estate 170,171,707 12,836,286 1,836,865 184,844,858 ￦ 266,078,783 ￦ 19,527,321 ￦ 2,211,895 ￦ 287,817,999 December 31, 2021 12-month Lifetime expected credit losses Total Non-impaired Impaired (In millions of Korean won) Guarantees ￦ 90,696,507 ￦ 6,604,758 ￦ 396,097 ￦ 97,697,362 Deposits and savings 5,723,090 98,389 79,229 5,900,708 Property and equipment 13,205,822 597,251 319,697 14,122,770 Real estate 182,139,890 13,736,634 1,990,847 197,867,371 ￦ 291,765,309 ￦ 21,037,032 ￦ 2,785,870 ￦ 315,588,211 4.2.5 Credit risk of securities Credit qualities of securities exposed to credit risk other than equity securities among financial investments as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit Not applying Total Non-impaired Impaired (In millions of Korean won) Securities measured at amortized cost* Grade 1 ￦ 36,467,719 ￦ — ￦ — ￦ — ￦ 36,467,719 Grade 2 359,551 — — — 359,551 Grade 3 38,847 7,061 — — 45,908 Grade 4 — — — — — Grade 5 — — — — — 36,866,117 7,061 — — 36,873,178 Securities measured at fair value through other comprehensive income Grade 1 54,576,777 — — — 54,576,777 Grade 2 3,746,200 — — — 3,746,200 Grade 3 126,391 — — — 126,391 Grade 4 7,521 — — — 7,521 Grade 5 — — — — — 58,456,889 — — — 58,456,889 ￦ 95,323,006 ￦ 7,061 ￦ — ￦ — ￦ 95,330,067 December 31, 2021 12-month Lifetime expected credit Not applying Total Non-impaired Impaired (In millions of Korean won) Securities measured at amortized cost* Grade 1 ￦ 43,427,028 ￦ — ￦ — ￦ — ￦ 43,427,028 Grade 2 1,039,757 — — — 1,039,757 Grade 3 1,371 7,641 — — 9,012 Grade 4 — — — — — Grade 5 — — — — — 44,468,156 7,641 — — 44,475,797 Securities measured at fair value through other comprehensive income Grade 1 51,490,960 — — — 51,490,960 Grade 2 4,682,582 — — — 4,682,582 Grade 3 42,861 3,973 — — 46,834 Grade 4 39,135 — — — 39,135 Grade 5 — — — — — 56,255,538 3,973 — — 56,259,511 ￦ 100,723,694 ￦ 11,614 ￦ — ￦ — ￦ 100,735,308 * Before netting of allowance Credit qualities of securities other than equity securities, according to the credit ratings by external credit rating agencies as of December 31, 2020 and 2021, are as follows: Domestic Foreign Credit quality KIS NICE P&I KAP FnPricing Inc. S&P Fitch-IBCA Moody’s Grade 1 AA0 to AAA AA0 to AAA AA0 to AAA AA0 to AAA A- to AAA A- to AAA A3 to Aaa Grade 2 A- A- A- A- BBB- to BBB+ BBB- to BBB+ Baa3 to Baa1 Grade 3 BBB0 to BBB+ BBB0 to BBB+ BBB0 to BBB+ BBB0 to BBB+ BB to BB+ BB to BB+ Ba2 to Ba1 Grade 4 BB0 to BBB- BB0 to BBB- BB0 to BBB- BB0 to BBB- B+ to BB- B+ to BB- B1 to Ba3 Grade 5 BB- BB- BB- BB- B or under B or under B2 or under Credit qualities of debt securities denominated in Korean won are based on the lowest credit rating by the domestic credit rating agencies above, and those denominated in foreign currencies are based on the lowest credit rating by the foreign credit rating agencies above. 4.2.6 Credit risk of due from financial institutions Credit qualities of due from financial institutions as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month expected Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Due from financial institutions measured at amortized cost* Grade 1 ￦ 21,437,207 ￦ — ￦ — ￦ — ￦ 21,437,207 Grade 2 334,371 — — — 334,371 Grade 3 445,732 13,099 — — 458,831 Grade 4 479,142 — — — 479,142 Grade 5 13,520 — 283 — 13,803 ￦ 22,709,972 ￦ 13,099 ￦ 283 ￦ — ￦ 22,723,354 December 31, 2021 12-month expected Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Due from financial institutions measured at amortized cost* Grade 1 ￦ 26,548,145 ￦ — ￦ — ￦ — ￦ 26,548,145 Grade 2 1,305,539 — — — 1,305,539 Grade 3 61,177 — — — 61,177 Grade 4 439,511 — — — 439,511 Grade 5 10,984 — — — 10,984 ￦ 28,365,356 ￦ — ￦ — ￦ — ￦ 28,365,356 * Before netting of allowance The classification criteria of the credit qualities of due from financial institutions as of December 31, 2020 and 2021, are the same as the criteria for securities other than equity securities. 4.2.7 Credit risk mitigation of derivative financial instruments Quantification of the extent to which collateral mitigates credit risk of derivative financial instruments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Deposits, savings, securities, and others ￦ 1,651,322 ￦ 834,175 4.2.8 Credit risk concentration analysis 4.2.8.1 Classifications of loans by country as of December 31, 2020 and 2021, are as follows: December 31, 2020 * Retail Corporate Credit card Total % Allowances Carrying amount (In millions of Korean won) Korea ￦ 182,344,832 ￦ 160,385,598 ￦ 18,734,570 ￦ 361,465,000 94.85 ￦ (2,433,702 ) ￦ 359,031,298 Europe — 2,042,979 — 2,042,979 0.54 (11,141 ) 2,031,838 China — 4,518,737 654 4,519,391 1.19 (20,489 ) 4,498,902 Japan 94 923,354 10 923,458 0.24 (1,249 ) 922,209 United States — 1,962,377 — 1,962,377 0.51 (21,489 ) 1,940,888 Cambodia 1,444,906 2,280,180 — 3,725,086 0.98 (89,652 ) 3,635,434 Indonesia 1,483,345 3,637,351 60,959 5,181,655 1.36 (699,947 ) 4,481,708 Others 427,276 833,080 1,437 1,261,793 0.33 (5,694 ) 1,256,099 ￦ 185,700,453 ￦ 176,583,656 ￦ 18,797,630 ￦ 381,081,739 100.00 ￦ (3,283,363 ) ￦ 377,798,376 December 31, 2021 * Retail Corporate Credit card Total % Allowances Carrying amount (In millions of Korean won) Korea ￦ 191,601,232 ￦ 183,222,201 ￦ 20,766,535 ￦ 395,589,968 93.70 ￦ (2,653,256 ) ￦ 392,936,712 Europe — 2,673,817 — 2,673,817 0.63 (29,015 ) 2,644,802 China 34,982 6,743,756 327 6,779,065 1.61 (34,316 ) 6,744,749 Japan 86 1,039,453 8 1,039,547 0.25 (2,227 ) 1,037,320 United States — 3,555,723 — 3,555,723 0.84 (28,113 ) 3,527,610 Cambodia 1,985,808 3,115,992 — 5,101,800 1.21 (70,660 ) 5,031,140 Indonesia 1,666,850 3,710,586 55,520 5,432,956 1.29 (841,145 ) 4,591,811 Others 618,120 1,374,302 1,930 1,994,352 0.47 (25,323 ) 1,969,029 ￦ 195,907,078 ￦ 205,435,830 ￦ 20,824,320 ￦ 422,167,228 100.00 ￦ (3,684,055 ) ￦ 418,483,173 * Amount includes loans measured at fair value through profit or loss, other comprehensive income, and amortized cost. 4.2.8.2 Classifications of corporate loans by industry as of December 31, 2020 and 2021, are as follows: December 31, 2020 Loans % Allowances Carrying amount (In millions of Korean won) Financial institutions ￦ 16,044,243 9.09 ￦ (20,987 ) ￦ 16,023,256 Manufacturing 45,884,606 25.98 (473,360 ) 45,411,246 Service 76,001,877 43.04 (385,093 ) 75,616,784 Wholesale and retail 23,129,457 13.10 (241,021 ) 22,888,436 Construction 4,397,814 2.49 (190,819 ) 4,206,995 Public sector 1,660,370 0.94 (74,839 ) 1,585,531 Others 9,465,289 5.36 (285,660 ) 9,179,629 ￦ 176,583,656 100.00 ￦ (1,671,779 ) ￦ 174,911,877 December 31, 2021 Loans % Allowances Carrying amount (In millions of Korean won) Financial institutions ￦ 22,059,895 10.74 ￦ (32,856 ) ￦ 22,027,039 Manufacturing 49,149,918 23.92 (510,762 ) 48,639,156 Service 86,926,095 42.31 (450,272 ) 86,475,823 Wholesale and retail 26,862,247 13.08 (257,541 ) 26,604,706 Construction 5,683,471 2.77 (228,803 ) 5,454,668 Public sector 2,070,960 1.01 (95,053 ) 1,975,907 Others 12,683,244 6.17 (311,629 ) 12,371,615 ￦ 205,435,830 100.00 ￦ (1,886,916 ) ￦ 203,548,914 4.2.8.3 Classifications of retail loans and credit card receivables as of December 31, 2020 and 2021, are as follows: December 31, 2020 Loans % Allowances Carrying amount (In millions of Korean won) Housing loan ￦ 87,312,052 42.70 ￦ (61,155 ) ￦ 87,250,897 General loan 98,388,401 48.11 (848,933 ) 97,539,468 Credit card 18,797,630 9.19 (701,496 ) 18,096,134 ￦ 204,498,083 100.00 ￦ (1,611,584 ) ￦ 202,886,499 December 31, 2021 Loans % Allowances Carrying amount (In millions of Korean won) Housing loan ￦ 93,695,479 43.23 ￦ (71,424 ) ￦ 93,624,055 General loan 102,211,599 47.16 (933,571 ) 101,278,028 Credit card 20,824,320 9.61 (792,144 ) 20,032,176 ￦ 216,731,398 100.00 ￦ (1,797,139 ) ￦ 214,934,259 4.2.8.4 Classifications of due from financial institutions, securities other than equity securities, and derivative financial assets by industry as of December 31, 2020 and 2021, are as follows: December 31, 2020 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Finance and insur a ￦ 22,723,354 100.00 ￦ (3,263 ) ￦ 22,720,091 22,723,354 100.00 (3,263 ) 22,720,091 Due from financial institutions measured at fair value through profit or loss Finance and insurance 100,094 100.00 — 100,094 100,094 100.00 — 100,094 Securities measured at fair value through profit or loss Government and government funded institutions 16,902,284 28.94 — 16,902,284 Finance and insurance 34,244,398 58.62 — 34,244,398 Others 7,268,418 12.44 — 7,268,418 58,415,100 100.00 — 58,415,100 Derivative financial assets Government and government funded institutions 44,670 0.81 — 44,670 Finance and insurance 4,925,535 88.82 — 4,925,535 Others 575,180 10.37 — 575,180 5,545,385 100.00 — 5,545,385 Securities measured at fair value through other comprehensive income Government and government funded institutions 26,205,864 44.83 — 26,205,864 Finance and insurance 24,847,602 42.51 — 24,847,602 Others 7,403,423 12.66 — 7,403,423 58,456,889 100.00 — 58,456,889 Securities measured at amortized cost Government and government funded institutions 24,018,884 65.14 (30 ) 24,018,854 Finance and insurance 11,019,911 29.89 (2,475 ) 11,017,436 Others 1,834,383 4.97 (445 ) 1,833,938 36,873,178 100.00 (2,950 ) 36,870,228 ￦ 182,114,000 ￦ (6,213 ) ￦ 182,107,787 December 31, 2021 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Finance and insurance ￦ 28,365,356 100.00 ￦ (2,969 ) ￦ 28,362,387 28,365,356 100.00 (2,969 ) 28,362,387 Due from financial institutions measured at fair value through profit or loss Finance and insurance 200,742 100.00 — 200,742 200,742 100.00 — 200,742 Securities measured at fair value through profit or loss Government and government funded institutions 16,101,187 25.56 — 16,101,187 Finance and insurance 35,025,800 55.59 — 35,025,800 Others 11,875,705 18.85 — 11,875,705 63,002,692 100.00 — 63,002,692 Derivative financial assets Government and government funded institutions 6,985 0.19 — 6,985 Finance and insurance 3,554,783 95.52 — 3,554,783 Others 159,602 4.29 — 159,602 3,721,370 100.00 — 3,721,370 Securities measured at fair value through other comprehensive income Government and government funded institutions 24,609,458 43.74 — 24,609,458 Finance and insurance 22,669,379 40.29 — 22,669,379 Others 8,980,674 15.97 — 8,980,674 56,259,511 100.00 — 56,259,511 Securities measured at amortized cost Government and government funded institutions 31,996,180 71.94 (34 ) 31,996,146 Finance and insurance 10,450,497 23.50 (3,337 ) 10,447,160 Others 2,029,120 4.56 (798 ) 2,028,322 44,475,797 100.00 (4,169 ) 44,471,628 ￦ 196,025,468 ￦ (7,138 ) ￦ 196,018,330 4.2.8.5 Classifications of due from financial institutions, securities other than equity securities, and derivative financial assets by country as of December 31, 2020 and 2021, are as follows: December 31, 2020 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Korea ￦ 16,535,849 72.78 ￦ (607 ) ￦ 16,535,242 United States 2,030,614 8.94 (283 ) 2,030,331 Others 4,156,891 18.28 (2,373 ) 4,154,518 22,723,354 100.00 (3,263 ) 22,720,091 Due from financial institutions measured at fair value through profit or loss Korea 100,094 100.00 — 100,094 100,094 100.00 — 100,094 Securities measured at fair value through profit or loss Korea 53,991,978 92.43 — 53,991,978 United States 2,370,538 4.06 — 2,370,538 Others 2,052,584 3.51 — 2,052,584 58,415,100 100.00 — 58,415,100 Derivative financial assets Korea 2,885,214 52.03 — 2,885,214 United States 706,866 12.75 — 706,866 Others 1,953,305 35.22 — 1,953,305 5,545,385 100.00 — 5,545,385 Securities measured at fair value through other comprehensive income Korea 54,786,461 93.72 — 54,786,461 United States 942,151 1.61 — 942,151 Others 2,728,277 4.67 — 2,728,277 58,456,889 100.00 — 58,456,889 Securities measured at amortized cost Korea 34,545,872 93.69 (2,283 ) 34,543,589 United States 1,049,387 2.85 (241 ) 1,049,146 Others 1,277,919 3.46 (426 ) 1,277,493 36,873,178 100.00 (2,950 ) 36,870,228 ￦ 182,114,000 ￦ (6,213 ) ￦ 182,107,787 December 31, 2021 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Korea ￦ 21,051,229 74.21 ￦ (574 ) ￦ 21,050,655 United States 2,875,884 10.14 (136 ) 2,875,748 Others 4,438,243 15.65 (2,259 ) 4,435,984 28,365,356 100.00 (2,969 ) 28,362,387 Due from financial institutions measured at fair value through profit or loss Korea 200,742 100.00 — 200,742 200,742 100.00 — 200,742 Securities measured at fair value through profit or loss Korea 56,920,225 90.35 — 56,920,225 United States 3,334,888 5.29 — 3,334,888 Others 2,747,579 4.36 — 2,747,579 63,002,692 100.00 — 63,002,692 Derivative financial assets Korea 1,639,657 44.06 — 1,639,657 United States 753,896 20.26 — 753,896 France 370,787 9.96 — 370,787 Singapore 117,964 3.17 — 117,964 Japan 96,438 2.59 — 96,438 Others 742,628 19.96 — 742,628 3,721,370 100.00 — 3,721,370 Securities measured at fair value through other comprehensive income Korea 51,484,332 91.51 — 51,484,332 United States 1,417,898 2.52 — 1,417,898 Others 3,357,281 5.97 — 3,357,281 56,259,511 100.00 — 56,259,511 Securities measured at amortized cost Korea 41,912,154 94.24 (3,183 ) 41,908,971 United States 1,188,427 2.67 (466 ) 1,187,961 Others 1,375,216 3.09 (520 ) 1,374,696 44,475,797 100.00 (4,169 ) 44,471,628 ￦ 196,025,468 ￦ (7,138 ) ￦ 196,018,330 4.3 Liquidity Risk 4.3.1 Overview of liquidity risk Liquidity risk is a risk that the Group becomes insolvent due to the mismatch between the inflow and outflow of funds, unexpected cash outflows, or a risk of loss due to financing funds at a high interest rate or disposing of securities at an unfavorable price due to lack of available funds. The Group manages its liquidity risk through analysis of the contractual maturity of interest-bearing assets and liabilities, assets and liabilities related to the other inflows and outflows of funds, and off-balance 4.3.2 Liquidity risk management and indicator The liquidity risk is managed by risk management policies and liquidity risk management guidelines set forth in these policies that apply to all risk management policies and procedures that may arise throughout the overall business of the Group. The Group calculates and manages liquidity ratio and others for all transactions and off-balance 4.3.3 Analysis of remaining contractual maturity of financial liabilities The cash flows disclosed in the maturity analysis are undiscounted contractual amounts including principal and future interest payments; as such, amounts in the table below do not match with those in the consolidated statements of financial position which are based on discounted cash flows. The future interest payments for floating-rate liabilities are calculated on the assumption that the current interest rate is the same until maturity. 4.3.3.1 Remaining contractual maturity of financial liabilities other than derivatives held for cash flow hedge, and off-balance December 31, 2020 On demand Up to 1 month 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Financial liabilities Financial liabilities at fair value through profit or loss 1 ￦ 2,025,952 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 2,025,952 Financial liabilities designated at fair value through profit or loss 1 9,784,107 — — — — — 9,784,107 Derivatives held for trading 1 5,014,072 — — — — — 5,014,072 Derivatives held for hedging 2 — 3,123 4,120 62,147 35,198 109 104,697 Deposits 3 182,111,594 17,207,360 28,485,765 99,879,946 12,133,364 1,664,509 341,482,538 Borrowings 9,333,894 17,730,230 4,923,897 9,617,100 7,616,809 938,374 50,160,304 Debentures 18,105 2,806,105 6,769,859 14,330,686 35,512,544 6,241,226 65,678,525 Lease liabilities 205 22,372 40,376 152,084 332,033 44,882 591,952 Other financial liabilities 217,866 24,153,880 208,745 329,291 748,593 215,447 25,873,822 ￦ 208,505,795 ￦ 61,923,070 ￦ 40,432,762 ￦ 124,371,254 ￦ 56,378,541 ￦ 9,104,547 ￦ 500,715,969 Off-balance Commitments 4 ￦ 159,133,983 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 159,133,983 Acceptances and guarantees contracts 8,548,928 — — — — — 8,548,928 Financial guarantee contracts 5 4,964,468 — — — — — 4,964,468 ￦ 172,647,379 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 172,647,379 December 31, 2021 On demand Up to 1 month 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Financial liabilities Financial liabilities at fair value through profit or loss 1 ￦ 2,939,584 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 2,939,584 Financial liabilities designated at fair value through profit or loss 1 9,149,396 — — — — — 9,149,396 Derivatives held for trading 1 3,509,789 — — — — — 3,509,789 Derivatives held for hedging 2 — 11,355 9,993 31,135 31,640 1,423 85,546 Deposits 3 204,616,202 16,556,213 31,123,968 111,140,222 10,157,238 1,329,120 374,922,963 Borrowings 8,504,084 17,807,785 5,825,350 13,861,238 10,380,171 1,003,369 57,381,997 Debentures 14,528 3,438,621 5,318,699 20,496,869 34,863,044 6,509,966 70,641,727 Lease liabilities 139 23,387 42,406 157,536 334,359 50,555 608,382 Other financial liabilities 217,874 22,953,515 203,897 354,876 934,389 372,745 25,037,296 ￦ 228,951,596 ￦ 60,790,876 ￦ 42,524,313 ￦ 146,041,876 ￦ 56,700,841 ￦ 9,267,178 ￦ 544,276,680 Off-balance Commitments 4 ￦ 170,218,143 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 170,218,143 Acceptances and guarantees contracts 10,199,689 — — — — — 10,199,689 Financial guarantee contracts 5 6,892,464 — — — — — 6,892,464 ￦ 187,310,296 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 187,310,296 1 Financial liabilities measured or designated at fair value through profit or loss and derivatives held for trading are not managed by contractual maturity because they are expected to be traded or redeemed before maturity. Therefore, the carrying amounts of those financial instruments are included in the ‘On demand’ category. 2 Cash flows of derivatives held for hedging are shown at net amount of cash inflows and outflows by remaining contractual maturity. 3 Deposits that are contractually repayable on demand or on short notice are included in the ‘On demand’ category. 4 Commitments are included in the ‘On demand’ category because payments can be requested at any time. 5 Cash flows under financial guarantee contracts are classified based on the earliest period that the contract can be executed. 4.3.3.2 Contractual cash flows of derivatives held for cash flow hedge as of December 31, 2020 and 2021, are as follows: December 31, 2020 Up to 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Cash flow to be received (paid) of net-settled ￦ (1,082 ) ￦ (5,569 ) ￦ (15,132 ) ￦ (25,354 ) ￦ 290 ￦ (46,847 ) Cash flow to be received of gross-settled derivatives 85,064 220,339 517,929 2,289,277 — 3,112,609 Cash flow to be paid of gross-settled derivatives (88,952 ) (221,261 ) (523,442 ) (1,616,530 ) — (2,450,185 ) December 31, 2021 Up to 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Cash flow to be received (paid) of net-settled ￦ (102 ) ￦ (2,647 ) ￦ (252 ) ￦ 24,812 ￦ (11 ) ￦ 21,800 Cash flow to be received of gross-settled derivatives 126,429 325,664 619,100 2,084,618 — 3,155,811 Cash flow to be paid of gross-settled derivatives (130,919 ) (329,546 ) (630,023 ) (1,428,759 ) — (2,519,247 ) 4.4 Market Risk 4.4.1 Concept Market risk refers to risks that can result in losses due to changes in market factors such as interest rate, stock price, and foreign exchange rate, etc., which arise from securities, derivatives, and others. The most significant risks associated with trading positions are interest rate risk, currency risk, and additional risks include stock price risk. The non-trading non-trading 4.4.2 Risk management The Group sets and monitors internal capital limits for market risk and interest rate risk to manage the risks of trading and non-trading non-trading In the case of Kookmin Bank, a major subsidiary, the Risk Management Council establishes and enforces overall market risk management policies for market risk management and decides to establish position limits, loss limits, VaR limits, and approves non-standard Kookmin Bank’s Asset-Liability Management Committee (“ALCO”) determines interest rate and commission operating standards and Asset Liability Management (“ALM”) operation policies and enacts and revises relevant guidelines. The Risk Management Committee and the Risk Management Council monitor the establishment and enforcement of ALM risk management policies and enact and revise ALM risk management guidelines. Interest rate risk limits are set based on future asset and liability positions and expected interest rate volatility, which reflect annual business plans. The ALM Department and the Risk Management Department regularly measure and monitor interest rate risk and report the status and limit of interest rate risk including changes in Economic Value of Equity (“ΔEVE”), changes in Net Interest Income (“ΔNII”), and duration gap to the ALCO and the Risk Management Council on a monthly basis, and to the Risk Management Committee on a quarterly basis. To ensure the adequacy of interest rate risk and liquidity risk management, the Risk Management Dep

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2021
Disclosure of operating segments [abstract]
Segment Information	5. Segment Information 5.1 Overall Segment Information and Business Segments The Group classifies reporting segments based on the nature of the products and services provided, the type of customer, and the Group’s management organization. Banking business Corporate banking Loans, deposit products, and other related financial services to large, small and medium-sized Retail banking Loans, deposit products, and other related financial services to individuals and households Other banking services Trading activities in securities and derivatives, funding, and other supporting activities Securities business Investment banking, brokerage services, and other supporting activities Non-life Non-life Credit card business Credit sale, cash advance, card loan, and other supporting activities Life insurance business Life insurance and other supporting activities Financial information by business segment as of and for the years ended December 31, 2020 and 2021, are as follows: 2020 Banking business Corporate Retail banking Other Sub-total Securities Non-life Credit card Life Others Consolidation Total (In millions of Korean won) Net operating revenues from external customers ￦ 2,833,601 ￦ 2,918,826 ￦ 1,797,921 ￦ 7,550,348 ￦ 1,448,409 ￦ 1,027,269 ￦ 1,538,230 ￦ 237,416 ￦ 690,970 ￦ — ￦ 12,492,642 Intersegment net operating revenues (expenses) 178,199 — 108,118 286,317 (6,366 ) 5,976 (183,480 ) (9,655 ) 324,910 (417,702 ) — 3,011,800 2,918,826 1,906,039 7,836,665 1,442,043 1,033,245 1,354,750 227,761 1,015,880 (417,702 ) 12,492,642 Net interest income 3,238,002 3,178,280 338,484 6,754,766 510,566 615,951 1,265,703 260,925 314,832 (469 ) 9,722,274 Interest income 4,899,943 4,519,579 1,036,643 10,456,165 820,100 616,852 1,631,520 261,056 726,668 (26,614 ) 14,485,747 Interest expense (1,661,941 ) (1,341,299 ) (698,159 ) (3,701,399 ) (309,534 ) (901 ) (365,817 ) (131 ) (411,836 ) 26,145 (4,763,473 ) Net fee and commission income (expenses) 363,459 406,603 297,860 1,067,922 916,758 (171,220 ) 400,485 (18,059 ) 776,282 (13,229 ) 2,958,939 Fee and commission income 480,190 529,178 440,319 1,449,687 1,037,545 8,571 1,485,718 98 871,499 (326,094 ) 4,527,024 Fee and commission expense (116,731 ) (122,575 ) (142,459 ) (381,765 ) (120,787 ) (179,791 ) (1,085,233 ) (18,157 ) (95,217 ) 312,865 (1,568,085 ) Net insurance income (expenses) — — — — — 376,827 13,283 (91,410 ) — 1,293 299,993 Insurance income — — — — — 12,367,894 23,989 2,026,052 — (31,295 ) 14,386,640 Insurance expense — — — — — (11,991,067 ) (10,706 ) (2,117,462 ) — 32,588 (14,086,647 ) Net gains (losses) on financial instruments at fair value through profit or loss (52,493 ) — 296,676 244,183 117,792 259,274 5,904 71,350 396,626 (83,763 ) 1,011,366 Net other operating income (expenses) (537,168 ) (666,057 ) 973,019 (230,206 ) (103,073 ) (47,587 ) (330,625 ) 4,955 (471,860 ) (321,534 ) (1,499,930 ) General and administrative expenses ￦ (1,555,089 ) ￦ (2,072,515 ) ￦ (573,742 ) ￦ (4,201,346 ) ￦ (844,503 ) ￦ (810,923 ) ￦ (514,845 ) ￦ (152,271 ) ￦ (405,530 ) ￦ 114,606 ￦ (6,814,812 ) Operating income before provision for credit losses 1,456,711 846,311 1,332,297 3,635,319 597,540 222,322 839,905 75,490 610,350 (303,096 ) 5,677,830 Reversal (provision) of credit losses (204,302 ) (264,943 ) (14,937 ) (484,182 ) (23,827 ) 7,569 (396,376 ) 472 (148,127 ) 973 (1,043,498 ) Net operating income 1,252,409 581,368 1,317,360 3,151,137 573,713 229,891 443,529 75,962 462,223 (302,123 ) 4,634,332 Share of profit (loss) of associates and joint ventures — — (48,158 ) (48,158 ) 3,598 (42 ) 1,127 1 553 (829 ) (43,750 ) Net other non-operating 5,490 — 23,354 28,844 4,472 16,142 (6,636 ) (16,270 ) 40,927 121,911 189,390 Segment profit before income tax expense 1,257,899 581,368 1,292,556 3,131,823 581,783 245,991 438,020 59,693 503,703 (181,041 ) 4,779,972 Income tax expense (339,728 ) (159,876 ) (312,700 ) (812,304 ) (156,135 ) (68,821 ) (114,027 ) (27,167 ) (97,268 ) 11,328 (1,264,394 ) Profit for the year ￦ 918,171 ￦ 421,492 ￦ 979,856 ￦ 2,319,519 ￦ 425,648 ￦ 177,170 ￦ 323,993 ￦ 32,526 ￦ 406,435 ￦ (169,713 ) ￦ 3,515,578 Profit attributable to shareholders of the Parent Company 917,956 421,492 958,747 2,298,195 425,622 177,181 324,662 32,526 404,381 (194,119 ) 3,468,448 Profit (loss) attributable to non-controlling 215 — 21,109 21,324 26 (11 ) (669 ) — 2,054 24,406 47,130 Total assets* 164,323,181 161,330,053 112,790,880 438,444,114 57,570,654 39,125,869 24,071,645 35,546,572 47,408,052 (31,446,962 ) 610,719,944 Total liabilities* 167,236,387 176,571,944 64,227,709 408,036,040 52,516,488 35,093,312 19,789,959 32,524,518 21,598,232 (2,240,962 ) 567,317,587 2021 Banking business Securities Non-life Credit card Life Others Consolidation Total Corporate Retail Other Sub-total (In millions of Korean won) Net operating revenues from external customers ￦ 3,589,404 ￦ 2,958,198 ￦ 1,585,192 ￦ 8,132,794 ￦ 1,675,977 ￦ 1,285,593 ￦ 1,773,989 ￦ 631,065 ￦ 984,185 ￦ — ￦ 14,483,603 Intersegment net operating revenues (expenses) 34,771 — 271,887 306,658 11,002 (53,017 ) (158,545 ) (7,273 ) 98,215 (197,040 ) — 3,624,175 2,958,198 1,857,079 8,439,452 1,686,979 1,232,576 1,615,444 623,792 1,082,400 (197,040 ) 14,483,603 Net interest income 3,802,477 3,541,539 384,460 7,728,476 556,386 625,228 1,390,753 519,609 411,874 (2,754 ) 11,229,572 Interest income 5,317,800 4,437,930 918,631 10,674,361 824,775 634,816 1,768,215 523,882 816,515 (31,686 ) 15,210,878 Interest expense (1,515,323 ) (896,391 ) (534,171 ) (2,945,885 ) (268,389 ) (9,588 ) (377,462 ) (4,273 ) (404,641 ) 28,932 (3,981,306 ) Net fee and commission income (expenses) 390,619 392,060 405,202 1,187,881 1,014,801 (173,348 ) 546,022 (26,895 ) 1,068,648 8,474 3,625,583 Fee and commission income 534,749 535,530 516,665 1,586,944 1,201,670 10,418 1,644,806 433 1,187,661 (308,326 ) 5,323,606 Fee and commission expense (144,130 ) (143,470 ) (111,463 ) (399,063 ) (186,869 ) (183,766 ) (1,098,784 ) (27,328 ) (119,013 ) 316,800 (1,698,023 ) Net insurance income — — — — — 493,271 11,589 56,871 — (5,020 ) 556,711 Insurance income — — — — — 12,722,178 21,711 3,406,145 — (42,176 ) 16,107,858 Insurance expense — — — — — (12,228,907 ) (10,122 ) (3,349,274 ) — 37,156 (15,551,147 ) Net gains on financial instruments at fair value through profit or loss 29,407 — 313,427 342,834 123,183 369,864 3,431 137,343 184,467 (165,818 ) 995,304 Net other operating income (expenses) (598,328 ) (975,401 ) 753,990 (819,739 ) (7,391 ) (82,439 ) (336,351 ) (63,136 ) (582,589 ) (31,922 ) (1,923,567 ) General and administrative expenses ￦ (1,831,948 ) ￦ (2,036,855 ) ￦ (533,928 ) ￦ (4,402,731 ) ￦ (855,142 ) ￦ (833,597 ) ￦ (577,734 ) ￦ (203,198 ) ￦ (438,170 ) ￦ 109,719 ￦ (7,200,853 ) Operating income before provision for credit losses 1,792,227 921,343 1,323,151 4,036,721 831,837 398,979 1,037,710 420,594 644,230 (87,321 ) 7,282,750 Reversal (provision) of credit losses (392,956 ) (125,876 ) (3,896 ) (522,728 ) (18,438 ) (5,476 ) (465,342 ) 1,677 (175,568 ) 742 (1,185,133 ) Net operating income 1,399,271 795,467 1,319,255 3,513,993 813,399 393,503 572,368 422,271 468,662 (86,579 ) 6,097,617 Share of profit (loss) of associates and joint ventures — — 57,156 57,156 14,484 (143 ) 785 — 9,411 11,833 93,526 Net other non-operating (9,237 ) — (70,368 ) (79,605 ) (18,307 ) 17,446 (7,378 ) (158 ) 2,408 (23,943 ) (109,537 ) Segment profit before income tax expense 1,390,034 795,467 1,306,043 3,491,544 809,576 410,806 565,775 422,113 480,481 (98,689 ) 6,081,606 Income tax expense (368,577 ) (218,753 ) (366,185 ) (953,515 ) (215,424 ) (108,715 ) (144,611 ) (132,510 ) (148,044 ) 5,594 (1,697,225 ) Profit for the year ￦ 1,021,457 ￦ 576,714 ￦ 939,858 ￦ 2,538,029 ￦ 594,152 ￦ 302,091 ￦ 421,164 ￦ 289,603 ￦ 332,437 ￦ (93,095 ) ￦ 4,384,381 Profit attributable to shareholders of the Parent Company 1,022,699 576,714 991,351 2,590,764 594,301 301,836 418,898 289,603 330,563 (116,422 ) 4,409,543 Profit (loss) attributable to non-controlling (1,242 ) — (51,493 ) (52,735 ) (149 ) 255 2,266 — 1,874 23,327 (25,162 ) Total assets* 189,310,448 169,513,344 124,741,106 483,564,898 55,493,984 41,472,227 27,349,561 36,921,678 52,929,567 (33,836,081 ) 663,895,834 Total liabilities* 197,834,530 180,815,013 72,026,442 450,675,985 50,008,422 37,328,955 22,793,919 34,166,882 23,191,051 (2,563,300 ) 615,601,914 * Assets and liabilities of the reporting segments are amounts before intersegment transactions. 5.2 Services and Geographical Segments 5.2.1 Services information Net operating revenues from external customers by service for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Banking service ￦ 6,946,626 ￦ 7,550,348 ￦ 8,132,794 Securities service 1,113,200 1,448,409 1,675,977 Non-life 1,185,600 1,027,269 1,285,593 Credit card service 1,470,910 1,538,230 1,773,989 Life insurance service 107,404 237,416 631,065 Others 608,111 690,970 984,185 ￦ 11,431,851 ￦ 12,492,642 ￦ 14,483,603 5.2.2 Geographical information Geographical net operating revenues from external customers for the years ended December 31, 2019, 2020 and 2021, and major non-current Net operating revenues from external customers Major non-current 2019 2020 2021 December 31, 2020 December 31, 2021 (In millions of Korean won) Domestic ￦ 11,142,264 ￦ 11,891,540 ￦ 13,525,769 ￦ 10,216,017 ￦ 9,853,970 United States 72,945 114,044 112,388 45,353 45,530 New Zealand 6,946 3,554 12,857 2,385 1,932 China 109,574 84,821 127,939 13,971 21,416 Cambodia 19,534 250,426 410,482 32,354 35,668 United Kingdom 10,037 28,681 29,764 81,879 86,361 Indonesia — 44,392 166,683 387,237 437,088 Others 70,551 75,184 97,721 51,288 20,446 Consolidation — — — 487,742 518,788 ￦ 11,431,851 ￦ 12,492,642 ￦ 14,483,603 ￦ 11,318,226 ￦ 11,021,199

Financial Assets and Financial

Financial Assets and Financial Liabilities	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about financial instruments [abstract]
Financial Assets and Financial Liabilities	6. Financial Assets and Financial Liabilities 6.1 Classification and Fair Value of Financial Instruments 6.1.1 Carrying amount and fair value of financial assets and liabilities by category as of December 31, 2020 and 2021, are as follows: December 31, 2020 Carrying amount Fair value (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 25,608,842 ￦ 25,612,273 Financial assets at fair value through profit or loss: 61,035,455 61,035,455 Due from financial institutions 100,094 100,094 Debt securities 58,415,100 58,415,100 Equity securities 2,092,313 2,092,313 Loans 337,983 337,983 Others 89,965 89,965 Derivatives held for trading 5,210,512 5,210,512 Derivatives held for hedging 334,873 334,873 Loans measured at amortized cost 377,166,984 378,791,808 Securities measured at amortized cost 36,870,229 38,026,073 Financial assets at fair value through other comprehensive income: 61,825,197 61,825,197 Debt securities 58,456,889 58,456,889 Equity securities 3,074,899 3,074,899 Loans 293,409 293,409 Other financial assets 14,167,689 14,167,689 ￦ 582,219,781 ￦ 585,003,880 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,025,951 ￦ 2,025,951 Financial liabilities designated at fair value through profit or loss 9,784,107 9,784,107 Derivatives held for trading 5,014,072 5,014,072 Derivatives held for hedging 208,825 208,825 Deposits 338,580,220 338,833,784 Borrowings 49,827,156 50,081,900 Debentures 62,760,687 63,189,132 Other financial liabilities 28,612,288 28,612,288 ￦ 496,813,306 ￦ 497,750,059 December 31, 2021 Carrying amount Fair value (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 31,009,374 ￦ 31,081,231 Financial assets at fair value through profit or loss: 66,005,815 66,005,815 Due from financial institutions 200,742 200,742 Debt securities 63,002,692 63,002,692 Equity securities 2,419,463 2,419,463 Loans 269,296 269,296 Others 113,622 113,622 Derivatives held for trading 3,532,542 3,532,542 Derivatives held for hedging 188,828 188,828 Loans measured at amortized cost 417,900,273 417,775,260 Securities measured at amortized cost 44,471,628 44,392,419 Financial assets at fair value through other comprehensive income: 60,376,243 60,376,243 Debt securities 56,259,511 56,259,511 Equity securities 3,803,128 3,803,128 Loans 313,604 313,604 Other financial assets 10,755,350 10,755,350 ￦ 634,240,053 ￦ 634,107,688 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,939,584 ￦ 2,939,584 Financial liabilities designated at fair value through profit or loss 9,149,396 9,149,396 Derivatives held for trading 3,509,789 3,509,789 Derivatives held for hedging 172,469 172,469 Deposits 372,023,918 371,936,631 Borrowings 56,912,374 56,805,938 Debentures 67,430,188 67,288,409 Other financial liabilities 29,494,402 29,494,402 ￦ 541,632,120 ￦ 541,296,618 Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The Group discloses the fair value of each class of assets and liabilities in a way that permits it to be compared with its carrying amount at the end of each reporting period. The best evidence of fair value of financial instruments is a quoted price in an active market. Methods of determining fair value of financial instruments are as follows: Cash and due from financial institutions Fair value of cash is same as carrying amount. Carrying amount of demand deposit and settlement deposit is a reasonable approximation of fair value because these financial instruments do not have a fixed maturity and are receivable on demand. Fair value of general deposit is measured using Discounted Cash Flow (“DCF”) Model. Securities Fair value of securities and others that are traded in an active market is determined using the quoted prices. If there is no quoted price, fair value is determined using external professional valuation institutions. The institutions use one or more valuation techniques that are deemed appropriate considering the characteristics of the financial instruments among DCF Model, Free Cash Flow to Equity Model, Comparable Company Analysis, Dividend Discount Model, Risk Adjusted Discount Rate Method, and Net Asset Value Method. Loans measured at amortized cost Fair value of loans is determined using DCF Model discounting the expected cash flows, which are contractual cash flows adjusted by the expected prepayment rate, at an appropriate discount rate. Derivatives and financial instruments at fair value through profit or loss Fair value of exchange traded derivatives is determined using quoted price in an active market, and fair value of OTC derivatives is determined using valuation techniques. The Group uses internally developed valuation models that are widely used by market participants to determine fair value of plain vanilla OTC derivatives including options, interest rate swaps, and currency swaps, based on observable market parameters. However, some complex financial instruments are valued using appropriate models developed from generally accepted market valuation models including Finite Difference Method (“FDM”), MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Closed Form, and Tree Model or valuation results from independent external professional valuation institutions. Deposits Carrying amount of demand deposits is a reasonable approximation of fair value because they do not have a fixed maturity and are payable on demand. Fair value of time deposits is determined using DCF Model discounting the expected cash flows, which are contractual cash flows adjusted by the expected prepayment rate, at an appropriate discount rate. Borrowings Carrying amount of overdrafts in foreign currency is a reasonable approximation of fair value because they do not have a fixed maturity and are payable on demand. Fair value of other borrowings is determined using DCF Model. Debentures Fair value is determined using valuation results of external professional valuation institutions, which are calculated using market inputs. Other financial assets and other financial liabilities Carrying amount is a reasonable approximation of fair value because other financial assets and other financial liabilities are temporary accounts used for other various transactions and their maturities are relatively short or not defined. 6.1.2 Fair value hierarchy The Group believes that valuation techniques used for measuring the fair value of financial instruments are reasonable and that the fair value recognized in the consolidated statement of financial position is appropriate. However, the fair value of the financial instruments recognized in the consolidated statement of financial position may be different if other valuation techniques or assumptions are used. Additionally, as there are a variety of valuation techniques and assumptions used in measuring fair value, it may be difficult to reasonably compare the fair value with that of other financial institutions. The Group classifies and discloses fair value of the financial instruments into the three fair value levels as follows: Level 1: The fair values are based on quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date. Level 2: The fair values are based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3: The fair values are based on unobservable inputs for the asset or liability. The fair value measurement is categorized in its entirety in the same level of the fair value hierarchy as the lowest level input that is significant to the entire measurement. If an observable input requires an adjustment using an unobservable input and that adjustment results in a significantly higher or lower fair value measurement, the resulting measurement would be categorized within Level 3 of the fair value hierarchy. 6.1.2.1 Fair value hierarchy of financial assets and liabilities at fair value in the consolidated statements of financial position Fair value hierarchy of financial assets and liabilities at fair value in the consolidated statements of financial position as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value hierarchy Total Level 1 Level 2 Level 3 (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 14,508,028 ￦ 35,298,665 ￦ 11,228,762 ￦ 61,035,455 Due from financial institutions — 10,011 90,083 100,094 Debt securities 13,316,819 34,580,168 10,518,113 58,415,100 Equity securities 1,101,244 409,259 581,810 2,092,313 Loans — 299,227 38,756 337,983 Others 89,965 — — 89,965 Derivatives held for trading 90,459 4,678,185 441,868 5,210,512 Derivatives held for hedging — 334,873 — 334,873 Financial assets at fair value through other comprehensive income: 18,731,801 40,645,505 2,447,891 61,825,197 Debt securities 18,147,167 40,309,722 — 58,456,889 Equity securities 584,634 70,357 2,419,908 3,074,899 Loans — 265,426 27,983 293,409 ￦ 33,330,288 ￦ 80,957,228 ￦ 14,118,521 ￦ 128,406,037 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,025,951 ￦ — ￦ — ￦ 2,025,951 Financial liabilities designated at fair value through profit or loss 1,040 581,636 9,201,431 9,784,107 Derivatives held for trading 204,470 4,668,155 141,447 5,014,072 Derivatives held for hedging — 208,825 — 208,825 ￦ 2,231,461 ￦ 5,458,616 ￦ 9,342,878 ￦ 17,032,955 December 31, 2021 Fair value hierarchy Total Level 1 Level 2 Level 3* (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 13,108,985 ￦ 40,205,783 ￦ 12,691,047 ￦ 66,005,815 Due from financial institutions — 128,726 72,016 200,742 Debt securities 12,146,181 39,300,923 11,555,588 63,002,692 Equity securities 849,182 600,768 969,513 2,419,463 Loans — 175,366 93,930 269,296 Others 113,622 — — 113,622 Derivatives held for trading 81,408 3,241,129 210,005 3,532,542 Derivatives held for hedging — 188,828 — 188,828 Financial assets at fair value through other comprehensive income: 20,027,158 38,900,548 1,448,537 60,376,243 Debt securities 17,706,456 38,553,055 — 56,259,511 Equity securities 2,320,702 47,859 1,434,567 3,803,128 Loans — 299,634 13,970 313,604 ￦ 33,217,551 ￦ 82,536,288 ￦ 14,349,589 ￦ 130,103,428 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,939,584 ￦ — ￦ — ￦ 2,939,584 Financial liabilities designated at fair value through profit or loss 36,938 1,294,944 7,817,514 9,149,396 Derivatives held for trading 211,132 3,124,057 174,600 3,509,789 Derivatives held for hedging — 172,469 — 172,469 ￦ 3,187,654 ￦ 4,591,470 ￦ 7,992,114 ￦ 15,771,238 * Includes KB Securities Co., Ltd.’s OTC derivatives consisting of ￦ 128,083 million of financial assets at fair value through profit or loss (debt instruments), ￦ 7,817,514 million of financial liabilities designated at fair value through profit or loss, ￦ 209,809 million of derivative financial assets, and ￦ 168,464 million of derivative financial liabilities. Valuation techniques and inputs of financial assets and liabilities classified as Level 2 and measured at fair value in the consolidated statements of financial position as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 35,298,665 Due from financial institutions 10,011 DCF Model Projected cash flow, Discount rate Debt securities 34,580,168 DCF Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Net Asset Value Method, and others Projected cash flow, Fair value of underlying asset, Dividend yield, Price of underlying asset, Interest rate, Discount rate, Volatility, Correlation coefficient, and others Equity securities 409,259 DCF Model Interest rate, Discount rate, and others Loans 299,227 DCF Model Interest rate, Discount rate, and others Derivatives held for trading 4,678,185 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, and others Discount rate, Underlying asset index, Volatility, Interest rate, Stock price, Foreign exchange rate, Dividend yield, and others Derivatives held for hedging 334,873 DCF Model, Closed Form, FDM, and others Discount rate, Volatility, Foreign exchange rate, and others Financial assets at fair value through other comprehensive income: 40,645,505 Debt securities 40,309,722 DCF Model, Market Value Approach Discount rate, Volatility, and others Equity securities 70,357 DCF Model Interest rate, Discount rate, and others Loans 265,426 DCF Model Discount rate, Volatility, and others ￦ 80,957,228 Financial liabilities Financial liabilities designated at fair value through profit or loss ￦ 581,636 DCF Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others Price of underlying asset, Interest rate, Dividend yield, Volatility, Discount rate, and others Derivatives held for trading 4,668,155 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, and others Discount rate, Underlying asset index, Volatility, Interest rate, Stock price, Foreign exchange rate, Dividend yield, and others Derivatives held for hedging 208,825 DCF Model, Closed Form, FDM, and others Discount rate, Foreign exchange rate, and others ￦ 5,458,616 December 31, 2021 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 40,205,783 Due from financial institutions 128,726 DCF Model, Hull and White Model Projected cash flow, Discount rate, Volatility, Correlation coefficient Debt securities 39,300,923 DCF Model, Hull and White Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Net Asset Value Method, Binomial Model, and others Projected cash flow, Fair value of underlying asset, Dividend yield, Price of underlying asset, Interest rate, Discount rate, Volatility, Correlation coefficient, and others Equity securities 600,768 DCF Model Interest rate, Discount rate, and others Loans 175,366 DCF Model Interest rate, Discount rate, and others Derivatives held for trading 3,241,129 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others Interest rate, Price of underlying asset, Foreign exchange rate, Credit spread, Discount rate, Volatility, and others Derivatives held for hedging 188,828 DCF Model, Closed Form, FDM Projected cash flow, Discount rate, Forward foreign exchange rate, Volatility, Foreign exchange rate, and others Financial assets at fair value through other comprehensive income: 38,900,548 Debt securities 38,553,055 DCF Model, Market Value Approach, Option Model Underlying asset index, Interest rate, Discount rate, and others Equity securities 47,859 DCF Model Discount rate Loans 299,634 DCF Model Discount rate ￦ 82,536,288 Financial liabilities Financial liabilities designated at fair value through profit or loss ￦ 1,294,944 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model Price of underlying asset, Interest rate, Dividend yield, Volatility, Discount rate Derivatives held for trading 3,124,057 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others Interest rate, Price of underlying asset, Foreign exchange rate, Credit spread, Discount rate, Volatility, and others Derivatives held for hedging 172,469 DCF Model, Closed Form, FDM Projected cash flow, Discount rate, Forward foreign exchange rate, Volatility, Foreign exchange rate, and others ￦ 4,591,470 6.1.2.2 Fair value hierarchy of financial assets and liabilities whose fair value is disclosed Fair value hierarchy of financial assets and liabilities whose fair value is disclosed as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value hierarchy Total Level 1 Level 2 Level 3 (In millions of Korean won) Financial assets Cash and due from financial institutions 1 ￦ 3,362,096 ￦ 19,573,075 ￦ 2,677,102 ￦ 25,612,273 Loans measured at amortized cost — 271,241 378,520,567 378,791,808 Securities measured at amortized cost 19,438,941 18,584,264 2,868 38,026,073 Other financial assets 2 — — 14,167,689 14,167,689 ￦ 22,801,037 ￦ 38,428,580 ￦ 395,368,226 ￦ 456,597,843 Financial liabilities Deposits 1 ￦ — ￦ 181,472,846 ￦ 157,360,938 ￦ 338,833,784 Borrowings 3 — 1,149,734 48,932,166 50,081,900 Debentures — 57,916,235 5,272,897 63,189,132 Other financial liabilities 2 — — 28,612,288 28,612,288 ￦ — ￦ 240,538,815 ￦ 240,178,289 ￦ 480,717,104 December 31, 2021 Fair value hierarchy Total Level 1 Level 2 Level 3 (In millions of Korean won) Financial assets Cash and due from financial institutions 1 ￦ 3,330,920 ￦ 25,791,556 ￦ 1,958,755 ￦ 31,081,231 Loans measured at amortized cost — 260,101 417,515,159 417,775,260 Securities measured at amortized 2 18,263,895 26,125,391 3,133 44,392,419 Other financial assets 2 — — 10,755,350 10,755,350 ￦ 21,594,815 ￦ 52,177,048 ￦ 430,232,397 ￦ 504,004,260 Financial liabilities Deposits 1 ￦ — ￦ 204,299,174 ￦ 167,637,457 ￦ 371,936,631 Borrowings 3 — 3,137,427 53,668,511 56,805,938 Debentures — 60,824,743 6,463,666 67,288,409 Other financial liabilities 2 — — 29,494,402 29,494,402 ￦ — ￦ 268,261,344 ￦ 257,264,036 ￦ 525,525,380 1 The amounts included in Level 2 are the carrying amounts which are reasonable approximations of fair value. 2 The amounts included in Level 3 are the carrying amounts which are reasonable approximations of fair value. 3 Borrowings of ￦ 292 million and ￦ 2,143 million included in Level 2 are the carrying amounts which are reasonable approximations of fair value as of December 31, 2020 and 2021, respectively. For financial assets and liabilities whose carrying amount is a reasonable approximation of fair value, valuation techniques and inputs are not disclosed. Valuation techniques and inputs of financial assets and liabilities classified as Level 2, and whose fair value is disclosed as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Loans measured at amortized cost ￦ 271,241 DCF Model Discount rate Securities measured at amortized cost 18,584,264 DCF Model, MonteCarlo Simulation Discount rate, Interest rate ￦ 18,855,505 Financial liabilities Borrowings ￦ 1,149,442 DCF Model Discount rate Debentures 57,916,235 DCF Model Discount rate ￦ 59,065,677 December 31, 2021 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Loans measured at amortized cost ￦ 260,101 DCF Model Discount rate Securities measured at amortized cost 26,125,391 DCF Model, MonteCarlo Simulation Discount rate, Interest rate ￦ 26,385,492 Financial liabilities Borrowings ￦ 3,135,284 DCF Model Discount rate Debentures 60,824,743 DCF Model Discount rate ￦ 63,960,027 Valuation techniques and inputs of financial assets and liabilities classified as Level 3, and whose fair value is disclosed as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation Inputs (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 2,677,102 DCF Model Credit spread, Other spread, Interest rate Loans measured at amortized cost 378,520,567 DCF Model Credit spread, Other spread, Prepayment rate, Interest rate Securities measured at amortized cost 2,868 DCF Model Interest rate ￦ 381,200,537 Financial liabilities Deposits ￦ 157,360,938 DCF Model Other spread, Prepayment rate, Interest rate Borrowings 48,932,166 DCF Model Other spread, Interest rate Debentures 5,272,897 DCF Model Other spread, Interest rate ￦ 211,566,001 December 31, 2021 Fair value Valuation Inputs (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 1,958,755 DCF Model Credit spread, Other spread, Interest rate Loans measured at amortized cost 417,515,159 DCF Model Credit spread, Other spread, Prepayment rate, Interest rate ￦ 419,473,914 Financial liabilities Deposits ￦ 167,637,457 DCF Model Other spread, Prepayment rate, Interest rate Borrowings 53,668,511 DCF Model Other spread, Interest rate Debentures 6,463,666 DCF Model Other spread, Interest rate ￦ 227,769,634 6.2 Disclosure of Fair Value Hierarchy Level 3 6.2.1 Valuation policy and process of Level 3 fair value The Group uses external, independent and qualified valuation service in addition to internal valuation models to determine the fair value of financial instruments at the end of every reporting period. If the changes in situation and events which cause transfers between the fair value hierarchy level for a financial asset or liability occur, the Group’s policy is to recognize such transfers as having occurred at the beginning of the reporting period. 6.2.2 Changes in fair value (Level 3) measured using valuation technique based on unobservable inputs in the market 6.2.2.1 Changes in financial instruments classified as Level 3 of the fair value hierarchy for the years ended December 31, 2020 and 2021, are as follows: 2020 Financial assets at fair value through profit or loss Financial investments Financial liabilities at Net derivative Due from financial Securities Loans measured at Equity securities Loans measured Financial liabilities Derivatives held for (In millions of Korean won) Beginning ￦ 51,125 ￦ 10,656,042 ￦ 188,133 ￦ 1,482,398 ￦ — ￦ (11,222,032 ) ￦ 309,966 Total gains or losses: Profit or loss (2,021 ) 22,069 627 (206 ) — (406,788 ) 400,241 Other comprehensive income (loss) (7,693 ) 144,963 — 815,244 (217 ) (27,876 ) — Purchases 135,227 3,519,573 — 122,827 40,000 — (24,165 ) Sales (86,555 ) (3,263,111 ) (150,004 ) (355 ) (11,800 ) — (328,348 ) Issues — — — — — (9,333,419 ) (42,732 ) Settlements — — — — — 11,788,684 90 Transfers into Level 3* — 129,580 — — — — (1,044 ) Transfers out of Level 3* — (109,193 ) — — — — (13,587 ) Ending ￦ 90,083 ￦ 11,099,923 ￦ 38,756 ￦ 2,419,908 ￦ 27,983 ￦ (9,201,431 ) ￦ 300,421 2021 Financial assets at fair value through profit or loss Financial investments Financial liabilities at Net derivative Due from financial Securities Loans measured at Equity securities Loans measured Financial liabilities Derivatives held for (In millions of Korean won) Beginning ￦ 90,083 ￦ 11,099,923 ￦ 38,756 ￦ 2,419,908 ￦ 27,983 ￦ (9,201,431 ) ￦ 300,421 Total gains or losses: Profit or loss 212 346,982 (431 ) — — 61,756 (66,116 ) Other comprehensive income (loss) 1,720 223,545 — (101,876 ) 87 (5,446 ) — Purchases — 3,567,937 55,605 74,602 — — 3,953 Sales (19,999 ) (2,360,801 ) — (5,618 ) (14,100 ) — (170,055 ) Issues — — — — — (8,233,128 ) (32,516 ) Settlements — — — — — 9,560,735 — Transfers into Level 3* — 4,307 — — — — (282 ) Transfers out of Level 3* — (356,792 ) — (952,449 ) — — — Ending ￦ 72,016 ￦ 12,525,101 ￦ 93,930 ￦ 1,434,567 ￦ 13,970 ￦ (7,817,514 ) ￦ 35,405 * Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data. 6.2.2.2 In relation to changes in financial instruments classified as Level 3 of the fair value hierarchy, total gains or losses recognized in profit or loss for the period, and total gains or losses recognized in profit or loss from financial instruments held at the end of the reporting period for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 Net losses on financial Other operating Net interest income Net gains on Other operating Net interest income (In millions of Korean won) Total gains (losses) recognized in profit or loss for the period ￦ (489,703 ) ￦ 1,388 ￦ 22 ￦ 70,251 ￦ (56,329 ) ￦ — Total gains (losses) recognized in profit or loss from financial instruments held at the end of the reporting period (37,668 ) 1,331 — 129,824 (60,884 ) — 2021 Net gains on financial Other operating Net interest income (In millions of Korean won) Total gains recognized in profit or loss for the period ￦ 256,167 ￦ 86,236 ￦ — Total gains recognized in profit or loss from financial instruments held at the end of the reporting period 126,516 85,256 — 6.2.3 Sensitivity analysis of changes in unobservable inputs 6.2.3.1 Information about fair value measurements using unobservable inputs as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial assets Financial assets at fair value through profit or loss: Due from financial institutions ￦ 90,083 MonteCarlo Simulation Volatility of underlying asset 19.40 ~ 36.76 The higher the volatility of underlying asset, the higher the fair value fluctuation Correlation coefficient 12.27 The higher the correlation coefficient, the higher the fair value fluctuation Debt securities 10,518,113 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Option Model, Binomial Model, Net Asset Value Method, Income Approach, Market Value Approach, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Volatility 8.00 ~ 179.75 The higher the volatility, the higher the fair value fluctuation Discount rate 0.00 ~ 21.37 The lower the discount rate, the higher the fair value Recovery rate 40 The higher the recovery rate, the higher the fair value Correlation coefficient between underlying assets -61.12 ~ 100.00 The higher the correlation coefficient, the higher the fair value fluctuation Liquidation value 0.00 The higher the liquidation value, the higher the fair value Rate of real estate price fluctuation 0.00 The higher the sale price of real estate, the higher the fair value Equity securities 581,810 Income Approach, Market Value Approach, Asset Value Approach, DCF Model, Comparable Company Analysis, Risk Adjusted Discount Rate Method, Dividend Discount Model, Usage of Past Transactions, Binomial Model, and others Growth rate 0.00 ~ 1.10 The higher the growth rate, the higher the fair value Discount rate 0.60 ~ 18.67 The lower the discount rate, the higher the fair value Liquidation value 0.00 The higher the liquidation value, the higher the fair value Loans 38,756 Binomial Model, DCF Model Volatility of stock price 0.00 The higher the volatility, the higher the fair value fluctuation Discount rate 7.86 The lower the discount rate, the higher the fair value December 31, 2020 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Derivatives held for trading: Stock and index 382,337 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility of underlying asset 20.00 ~ 72.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -61.12 ~ 89.01 The higher the correlation coefficient, the higher the fair value fluctuation Currency, interest rate, and others 59,531 DCF Model, Hull and White Model Volatility 0.00 ~ 68.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -50.48 ~ 90.95 The higher the correlation coefficient, the higher the fair value fluctuation Financial assets at fair value through other comprehensive income: Equity securities 2,419,908 Risk Adjusted Discount Rate Method, IMV Model, DCF Model, Comparable Company Analysis, Dividend Discount Model, Option Model, Net Asset Value Method, Market Value Approach, One Factor Hull and White Model, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Discount rate 7.60 ~ 19.67 The lower the discount rate, the higher the fair value Volatility 22.11 ~ 24.16 The higher the volatility, the higher the fair value fluctuation Loans 27,983 DCF Model Discount rate 2.21 ~ 4.21 The lower the discount rate, the higher the fair value ￦ 14,118,521 December 31, 2020 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial liabilities Financial liabilities designated at fair value through profit or loss: Derivative-linked securities ￦ 9,201,431 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model Volatility of underlying asset 1.00 ~ 72.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -61.12 ~ 90.95 The higher the absolute value of correlation coefficient, the higher the fair value fluctuation Derivatives held for trading: Stock and index 60,291 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility 20.00 ~ 68.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -61.12 ~ 90.95 The higher the correlation coefficient, the higher the fair value fluctuation Others 81,156 MonteCarlo Simulation, Hull and White Model, DCF Model, Closed Form Volatility 21.00 ~ 68.00 The higher the volatility, the higher the fair value fluctuation Discount rate 1.15 ~ 1.29 The higher the discount rate, the lower the fair value Correlation coefficient between underlying assets -50.48 ~ 90.95 The higher the absolute value of correlation coefficient, the higher the fair value fluctuation ￦ 9,342,878 December 31, 2021 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial assets Financial assets at fair value through profit or loss: Due from financial institutions ￦ 72,016 MonteCarlo Simulation, Hull and White Model Volatility of underlying asset 14.30 ~ 39.66 The higher the volatility of underlying asset, the higher the fair value fluctuation Correlation coefficient -3.36 The higher the correlation coefficient, the higher the fair value fluctuation Debt securities 11,555,588 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Option Model, Binomial Model, Net Asset Value Method, Milestone Method, Income Approach, Market Value Approach, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Volatility 13.87 ~ 58.39 The higher the volatility, the higher the fair value fluctuation Discount rate 0.60 ~ 21.37 The lower the discount rate, the higher the fair value Stock price 18.87 ~ 19.48 The higher the stock price, the higher the fair value Correlation coefficient between underlying assets -60.35 ~ 100.00 The higher the correlation coefficient, the higher the fair value fluctuation Liquidation value -1.00 ~ 1.00 The higher the liquidation value, the higher the fair value Recovery rate 40 The higher the recovery rate, the higher the fair value Rate of real estate price fluctuation -1.00 ~ 1.00 The higher the sale price of real estate, the higher the fair value Equity securities 969,513 Income Approach, Market Value Approach, Asset Value Approach, DCF Model, Comparable Company Analysis, Risk Adjusted Discount Rate Method, Dividend Discount Model, Usage of Past Transactions, Binomial Model, and others Growth rate 0.50 ~ 2.00 The higher the growth rate, the higher the fair value Discount rate 8.80 ~ 24.60 The lower the discount rate, the higher the fair value Stock price 23.36 ~ 25.49 The higher the stock price, the higher the fair value Loans 93,930 DCF Model Discount rate 8.21 The lower the discount rate, the higher the fair value December 31, 2021 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Derivatives held for trading: Stock and index ￦ 184,165 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility of underlying asset 15.07 ~ 80.58 The higher the volatility, the higher the fair value fluctuation Correlation coefficient -60.35 ~ 88.17 The higher the correlation coefficient, the higher the fair value fluctuation Stock price -10.00 ~ 10.00 The higher the stock price, the higher the fair value Currency, interest rate, and others 25,840 DCF Model, Hull and White Model, MonteCarlo Simulation, Closed Form Volatility 2.67 ~ 81.32 The higher the volatility, the higher the fair value fluctuation Correlation coefficient -48.31 ~ 90.16 The higher the correlation coefficient, the higher the fair value fluc

Due from Financial Institutions

Due from Financial Institutions Measured at Amortized Cost	12 Months Ended
	Dec. 31, 2021
Due From Financial Institution [Abstract]
Due from Financial Institutions Measured at Amortized Cost	7. Due from Financial Institutions Measured at Amortized Cost 7.1 Details of due from financial institutions as of December 31, 2020 and 2021, are as follows: Financial institutions Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Due from financial institutions in Korean won Due from the Bank of Korea The Bank of Korea 0.00 ~ 0.97 ￦ 11,242,803 ￦ 15,317,033 Due from banks Hana Bank and others 0.00 ~ 5.20 3,692,044 3,390,521 Due from others Korea Securities Finance Corporation and others 0.00 ~ 1.98 753,581 686,236 15,688,428 19,393,790 Due from financial institutions in foreign currencies Due from banks in foreign currencies The Bank of Korea and others 0.00 ~ 4.00 4,215,918 6,329,310 Time deposits in foreign currencies Bank of Communications Co., Ltd. and others 0.00 ~ 6.10 739,637 587,782 Due from others Societe Generale (Paris) and others 0.00 ~ 6.50 2,079,371 2,054,474 7,034,926 8,971,566 ￦ 22,723,354 ￦ 28,365,356 * Before netting of allowance 7.2 Details of restricted due from financial institutions as of December 31, 2020 and 2021, are as follows: Financial institutions December 31, 2020 December 31, 2021 Reasons of restriction (In millions of Korean won) Due from financial institutions in Korean won Due from the Bank of Korea The Bank of Korea ￦ 11,242,803 ￦ 15,317,033 Bank of Korea Act Due from banks Shinhan Bank and others 772,986 803,445 Net settlement and others Due from others NH Investment & Securities Co., Ltd. and others 545,457 528,642 Derivatives margin account and others 12,561,246 16,649,120 Due from financial institutions in foreign currencies Due from banks in foreign currencies Bank of Indonesia and others 1,097,729 2,262,610 Indonesian law and others Time deposits in foreign currencies Bank of Communications Co., Ltd. and others 46,428 68,588 Bank Act of the State of New York and others Due from others Societe Generale (Paris) and others 1,597,960 1,774,388 Derivatives margin account and others 2,742,117 4,105,586 ￦15,303,363 ￦20,754,706 * Before netting of allowance 7.3 Changes in allowances for credit losses of due from financial institutions for the years ended December 31, 2020 and 2021, are as follows: 2020 12-month expected Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 3,164 ￦ 1,188 ￦ 360 Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Impairment — — — Reversal of credit losses (416 ) (1,128 ) — Business combination 154 — — Others 45 (26 ) (78 ) Ending ￦ 2,947 ￦ 34 ￦ 282 2021 12-month expected Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 2,947 ￦ 34 ￦ 282 Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Impairment — — — Reversal of credit losses (51 ) (35 ) (282 ) Others 73 1 — Ending ￦ 2,969 ￦ — ￦ —

Assets pledged as collateral

Assets pledged as collateral	12 Months Ended
	Dec. 31, 2021
Pledged Assets [Abstract]
Assets Pledged as Collateral	8. Assets Pledged as Collateral 8.1 Details of assets pledged as collateral as of December 31, 2020 and 2021, are as follows: December 31, 2020 Assets pledged Pledgee Carrying amount Reasons of pledge (In millions of Due from financial institutions Korea Federation of Savings Banks and others ￦ 1,293,930 Borrowings from bank and others Financial assets at fair value through profit or loss The Korea Securities Depository and others 10,733,047 Repurchase agreements The Korea Securities Depository and others 7,009,580 Securities borrowing transactions Samsung Futures Inc. and others 730,774 Derivatives transactions 18,473,401 Financial assets at fair value through other comprehensive income The Korea Securities Depository and others 2,216,165 Repurchase agreements The Korea Securities Depository and others 1,322,998 Securities borrowing transactions The Bank of Korea 2,837,452 Borrowings from the Bank of Korea The Bank of Korea 1,610,691 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 270,089 Derivatives transactions 8,257,395 Securities measured at amortized cost The Korea Securities Depository and others 664,438 Repurchase agreements The Bank of Korea 4,295,149 Borrowings from the Bank of Korea The Bank of Korea 3,677,922 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 103,748 Derivatives transactions Others 598,187 Others 9,339,444 Mortgage loans Others 10,699,721 Covered bond Real estate LGIM COMMERCIAL LENDING Ltd. and others 1,480,942 Borrowings from bank and others ￦ 49,544,833 December 31, 2021 Assets pledged Pledgee Carrying amount Reasons of pledge (In millions of Due from financial institutions Shinhan Banks and others ￦ 1,163,138 Borrowings from bank and others Financial assets at fair value through profit or loss The Korea Securities Depository and others 8,689,639 Repurchase agreements The Korea Securities Depository and others 9,294,924 Securities borrowing transactions Samsung Futures Inc. and others 1,039,656 Derivatives transactions 19,024,219 Financial assets at fair value through other comprehensive income The Korea Securities Depository and others 2,048,029 Repurchase agreements The Korea Securities Depository and others 1,523,593 Securities borrowing transactions The Bank of Korea 2,843,426 Borrowings from the Bank of Korea The Bank of Korea 1,249,049 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 709,390 Derivatives transactions 8,373,487 Securities measured at amortized cost The Korea Securities Depository and others 494,973 Repurchase agreements The Bank of Korea 4,847,855 Borrowings from the Bank of Korea The Bank of Korea 3,948,622 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 144,014 Derivatives transactions Others 268,767 Others 9,704,231 Loans Others 9,659,575 Covered bond and others Real estate LGIM COMMERCIAL LENDING Ltd. and others 1,598,553 Borrowings from bank and others ￦ 49,523,203 In addition, the Group provided ￦ 4,680,816 million and ￦ 6,165,555 million of debt securities among its borrowed securities and other assets held as collateral to Korea Securities Finance Corporation and others as collateral as of December 31, 2020 and 2021, respectively. 8.2 Fair value of collateral available to sell or repledge, and collateral sold or repledged, regardless of debtor’s default as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value of collateral Fair value of collateral sold or repledged Total (In millions of Korean won) Securities ￦ 3,732,013 ￦ — ￦ 3,732,013 December 31, 2021 Fair value of collateral Fair value of collateral Total (In millions of Korean won) Securities ￦ 6,451,850 ￦ — ￦ 6,451,850

Derivative Financial Instrument

Derivative Financial Instruments and Hedge Accounting	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about hedges [abstract]
Derivative Financial Instruments and Hedge Accounting	9. Derivative Financial Instruments and Hedge Accounting The Group’s derivative operations focus on addressing the needs of the Group’s corporate clients to hedge their risk exposure and hedging the Group’s risk exposure that results from such client contracts. The Group also engages in derivative trading activities to hedge the interest rate risk and currency risk arising from the Group’s own assets and liabilities. In addition, the Group engages in proprietary trading of derivatives within the predetermined transaction limit. The Group provides and trades a range of derivative financial instruments, including: • Interest rate swaps relating to interest rate risk in Korean won • Cross-currency swaps, forwards, and options relating to currency risk • Stock index options linked with the Korea Composite Stock Price Index (“KOSPI”) In particular, the Group applies fair value hedge accounting using interest rate swaps, currency forwards, and others to hedge the risk of changes in fair value due to the changes in interest rate and foreign exchange rate of structured debentures in Korean won, debentures in foreign currencies, structured deposits in foreign currencies, and others. The Group applies cash flow hedge accounting using interest rate swaps, currency swaps, and others to hedge the risk of changes in cash flows of floating rate debt securities in Korean won, borrowings in foreign currencies, group of loans measured at amortized cost, and others. In addition, the Group applies net investments in foreign operations hedge accounting by designating debentures in foreign currencies and cross currency forwards as hedging instruments to hedge the currency risk of net investments in foreign operations. 9.1 Details of derivative financial instruments held for trading as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Notional amount Assets Liabilities Notional amount Assets Liabilities (In millions of Korean won) Interest rate Forwards ￦ 1,824,000 ￦ 50,580 ￦ 107,218 ￦ 4,037,717 ￦ 140,126 ￦ 126,610 Futures* 4,540,235 43 1,834 6,479,692 1,903 2,464 Swaps 300,105,350 631,917 682,401 334,721,395 354,686 397,046 Options 14,779,000 248,437 302,134 12,547,000 176,274 199,567 321,248,585 930,977 1,093,587 357,785,804 672,989 725,687 Currency Forwards 78,255,991 1,712,560 1,986,239 105,509,405 1,296,083 934,944 Futures* 376,281 158 695 361,791 464 877 Swaps 49,756,478 1,897,636 1,349,919 65,028,025 1,082,873 1,331,597 Options 2,377,775 33,421 28,012 1,885,064 7,643 11,044 130,766,525 3,643,775 3,364,865 172,784,285 2,387,063 2,278,462 Stock and index Futures* 1,027,347 20,061 2,246 1,612,965 14,338 6,530 Swaps 5,434,057 423,297 123,242 5,207,198 322,888 132,619 Options 6,482,510 135,805 275,282 7,617,703 95,338 241,371 12,943,914 579,163 400,770 14,437,866 432,564 380,520 Credit Swaps 3,015,782 19,395 9,700 2,602,382 18,979 7,409 3,015,782 19,395 9,700 2,602,382 18,979 7,409 Commodity Futures* 11,609 151 81 6,370 43 82 Swaps 13,923 268 991 — — — 25,532 419 1,072 6,370 43 82 Others 1,476,310 36,783 144,076 1,695,540 20,904 117,629 ￦ 469,476,648 ￦ 5,210,512 ￦ 5,014,070 ￦ 549,312,247 ￦ 3,532,542 ￦ 3,509,789 * Gains or losses arising from some daily mark-to-market 9.2 Average price conditions of future nominal cash flows by type of hedge accounting as of December 31, 2020 and 2021, are as follows: December 31, 2020 1 year 2 years 3 years 4 years 5 years Over Total (In millions of Korean won) Fair value hedge Nominal amount of the hedging instrument ￦ 5,266,994 ￦ 1,083,877 ￦ 512,608 ￦ 620,788 ￦ 1,462,964 ￦ 2,442,692 ￦ 11,389,923 Average price condition (%) 0.76 0.81 1.00 1.07 1.21 1.14 0.97 Average price condition (USD/KRW) 1,160.33 1,115.45 1,151.50 — — — 1,157.28 Average price condition (EUR/KRW) 1,353.28 — 1,366.30 — — — 1,353.36 Average price condition (AUD/KRW) 835.43 — — — — — 835.43 Average price condition (GBP/KRW) 1,546.54 — — — — — 1,546.54 Cash flow hedge Nominal amount of the hedging instrument ￦ 2,568,922 ￦ 1,767,357 ￦ 1,277,053 ￦ 166,643 ￦ 509,940 ￦ 100,000 ￦ 6,389,915 Average price condition (%) 0.83 1.66 2.48 2.00 1.63 1.67 1.36 Average price condition (USD/KRW) 1,113.33 1,160.46 1,181.36 1,128.30 1,142.05 — 1,152.37 Average price condition (EUR/KRW) 1,306.76 1,312.75 1,321.00 — 1,340.64 — 1,312.93 Average price condition (AUD/KRW) 837.00 — — — — — 837.00 Average price condition (SGD/KRW) 831.49 — 866.14 — — — 858.33 Hedge of net investments in foreign operations Nominal amount of the hedging instrument ￦ 217,274 ￦ 26,683 ￦ — ￦ — ￦ — ￦ — ￦ 243,957 Average price condition (USD/KRW) 1,111.45 — — — — — 1,111.45 Average price condition (GBP/KRW) — 1,465.26 — — — — 1,465.26 December 31, 2021 1 year 2 years 3 years 4 years 5 years Over Total (In millions of Korean won) Fair value hedge Nominal amount of the hedging instrument ￦ 2,223,113 ￦ 1,423,760 ￦ 967,376 ￦ 2,153,200 ￦ 1,428,673 ￦ 2,419,230 ￦ 10,615,352 Average price condition (%) 0.94 1.23 1.04 1.16 1.06 1.39 1.18 Average price condition (USD/KRW) 1,144.74 1,154.78 1,169.72 — — — 1,150.30 Average price condition (EUR/KRW) 1,359.59 1,363.95 1,394.84 — 1,458.92 — 1,409.23 Average price condition (AUD/KRW) 859.41 — — — — — 859.41 Average price condition (GBP/KRW) 1,554.65 — — 1,620.05 — — 1,557.47 Cash flow hedge Nominal amount of the hedging instrument ￦ 4,150,546 ￦ 1,763,372 ￦ 322,735 ￦ 641,733 ￦ 580,128 ￦ 150,000 ￦ 7,608,514 Average price condition (%) 1.01 1.51 2.06 1.87 1.84 2.12 1.21 Average price condition (USD/KRW) 1,159.92 1,178.13 1,145.05 1,139.40 1,123.13 — 1,152.89 Average price condition (EUR/KRW) 1,312.75 1,321.00 1,364.00 1,374.73 — — 1,351.76 Average price condition (AUD/KRW) — — 856.40 851.50 — — 853.40 Average price condition (SGD/KRW) — 866.14 — — — — 866.14 Hedge of net investments in foreign operations Nominal amount of the hedging instrument ￦ 91,636 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 91,636 Average price condition (USD/KRW) 1,071.00 — — — — — 1,071.00 Average price condition (GBP/KRW) 1,465.26 — — — — — 1,465.26 9.3 Fair Value Hedge 9.3.1 Details of fair value hedged items as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Carrying amount Accumulated amount of Changes in fair value Assets Liabilities Assets Liabilities (In millions of Korean won) Hedge accounting Interest rate Debt securities in Korean won ￦ 1,001,957 ￦ — ￦ 5,888 ￦ — ￦ 402 Debt securities in foreign currencies 2,712,980 — 62,922 — 42,382 Deposits in foreign currencies — 121,768 — 2,088 (4,491 ) Debentures in Korean won — 3,623,161 — (6,839 ) 27,909 Debentures in foreign currencies — 1,985,333 — 81,333 (37,438 ) 3,714,937 5,730,262 68,810 76,582 28,764 Currency Debt securities in foreign currencies 2,669,410 — 310,745 — (40,710 ) 2,669,410 — 310,745 — (40,710 ) ￦ 6,384,347 ￦ 5,730,262 ￦ 379,555 ￦ 76,582 ￦ (11,946 ) December 31, 2021 2021 Carrying amount Accumulated amount of Changes in fair value Assets Liabilities Assets Liabilities (In millions of Korean won) Hedge accounting Interest rate Debt securities in Korean won ￦ 1,627,228 ￦ — ￦ (20,272 ) ￦ — ￦ (26,247 ) Debt securities in foreign currencies 3,567,662 — (22,384 ) — (71,246 ) Deposits in foreign currencies — 93,521 — (1,319 ) 3,222 Debentures in Korean won — 2,470,123 — (79,877 ) 70,308 Debentures in foreign currencies — 1,154,178 — 27,953 45,132 5,194,890 3,717,822 (42,656 ) (53,243 ) 21,169 Currency Debt securities in foreign currencies 2,443,893 — 133,268 — 180,676 2,443,893 — 133,268 — 180,676 ￦ 7,638,783 ￦ 3,717,822 ￦ 90,612 ￦ (53,243) ￦ 201,845 9.3.2 Details of derivative instruments designated as fair value hedge as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 9,217,731 ￦ 158,914 ￦ 51,842 ￦ (23,022 ) Currency Forwards 2,172,192 128,038 2,616 97,394 ￦ 11,389,923 ￦ 286,952 ￦ 54,458 ￦ 74,372 December 31, 2021 2021 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 8,910,139 ￦ 127,290 ￦ 38,253 ￦ (33,227 ) Currency Forwards 1,705,213 2,436 54,855 (174,707 ) ￦ 10,615,352 ￦ 129,726 ￦ 93,108 ￦ (207,934 ) 9.3.3 Details of hedge ineffectiveness recognized in profit or loss on derivative instruments designated as fair value hedge for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Hedge accounting Interest rate ￦ 2,753 ￦ 5,742 ￦ (12,058 ) Currency (13,239 ) 56,684 5,969 ￦ (10,486 ) ￦ 62,426 ￦ (6,089 ) 9.3.4 Gains or losses on fair value hedging instruments and hedged items attributable to the hedged risk for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains (losses) on hedging instruments ￦ 34,070 ￦ 89,179 ￦ (187,364 ) Gains (losses) on hedged items attributable to the hedged risk (44,655 ) (26,899 ) 188,556 ￦ (10,585 ) ￦ 62,280 ￦ 1,192 9.4 Cash Flow Hedge 9.4.1 Details of cash flow hedged items as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: Cash flow hedge reserve Changes in fair value December 31, 2020 December 31, 2021 2020 2021 (In millions of Korean won) Hedge accounting Interest rate risk ￦ (22,439 ) ￦ 4,864 ￦ 12,172 ￦ (36,428 ) Currency risk (6,158 ) (12,597 ) 1,065 12,605 ￦ (28,597 ) ￦ (7,733 ) ￦ 13,237 ￦ (23,823 ) 9.4.2 Details of derivative instruments designated as cash flow hedge as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Notional Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 3,532,480 ￦ 1,286 ￦ 37,120 ￦ (11,940 ) Currency Swaps 2,857,435 40,835 116,124 (43,300 ) ￦ 6,389,915 ￦ 42,121 ￦ 153,244 ￦ (55,240 ) December 31, 2021 2021 Notional Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 4,553,250 ￦ 12,575 ￦ 9,532 ￦ 36,164 Currency Swaps 3,055,264 46,527 61,331 60,327 ￦ 7,608,514 ￦ 59,102 ￦ 70,863 ￦ 96,491 9.4.3 Gains or losses on cash flow hedging instruments and hedged items attributable to the hedged risk for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains (losses) on hedging instruments: ￦ (64,531 ) ￦ (55,240 ) ￦ 96,491 Effective portion of gains (losses) on cash flow hedging instruments (recognized in other comprehensive income or loss) (65,323 ) (48,034 ) 95,478 Ineffective portion of gains (losses) on cash flow hedging instruments (recognized in profit or loss) 792 (7,206 ) 1,013 9.4.4 Amounts recognized in other comprehensive income (loss) and reclassified from equity to profit or loss related to derivative instruments designated as cash allow hedge for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Other comprehensive income (loss) ￦ (65,323 ) ￦ (48,034 ) ￦ 95,478 Reclassification to profit or loss 21,604 39,190 (53,080 ) Income tax effect 10,537 7,580 (21,534 ) ￦ (33,182 ) ￦ (1,264 ) ￦ 20,864 9.5 Hedge of Net Investments in Foreign Operations 9.5.1 Details of net investments in foreign operations hedged items as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: Foreign currency translation reserve Changes in fair value December 31, 2020 December 31, 2021 2020 2021 (In millions of Korean won) Hedge accounting Currency risk ￦ 22,278 ￦ (35,658 ) ￦ (88,769 ) ￦ 88,729 9.5.2 Details of financial instruments designated as hedge of net investments in foreign operations as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Currency Forwards ￦ 243,957 ￦ 5,800 ￦ 1,125 ￦ 14,406 Debentures in foreign currencies 842,112 — 842,112 74,363 ￦ 1,086,069 ￦ 5,800 ￦ 843,237 ￦ 88,769 December 31, 2021 2021 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Currency Forwards ￦ 91,636 ￦ — ￦ 8,498 ￦ (8,494 ) Debentures in foreign currencies 1,273,227 — 1,273,227 (80,235 ) ￦ 1,364,863 ￦ — ￦ 1,281,725 ￦ (88,729 ) 9.5.3 Fair value of non-derivative December 31, 2020 December 31, 2021 (In millions of Korean won) Debentures in for e ￦ 852,570 ￦ 1,275,291 9.5.4 Gains or losses on net inv e 2019 2020 2021 (In millions of Korean won) Gains (losses) on hedging instruments: ￦ (13,410 ) ￦ 88,769 ￦ (88,729 ) Effective portion of gains (losses) on hedge of net investments in foreign operations (recognized in other comprehensive income or loss) (13,410 ) 88,769 (88,729 ) Ineffective portion of gains (losses) on hedge of net investments in foreign operations (recognized in profit or loss) — — — 9.5.5 Effective portion of gains or losses on net investments in foreign operations hedging instruments recognized in other comprehensive income (loss) for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Other comprehensive income (loss) ￦ (13,410 ) ￦ 88,769 ￦ (88,729 ) Reclassification to profit or loss 1,316 — 5,195 Income tax eff e 3,194 (24,500 ) 25,599 ￦ (8,900 ) ￦ 64,269 ￦ (57,935 ) 9.6 Interest Rate Benchmark Reform The USD LIBOR interest rate will be replaced by the Secured Overnight Financing Rate (“SOFR”) based on actual transactions. In the case of KRW, the Korean government bond/monetary stabilization bond RP rate has been finally decided as the Risk-Free Reference Rate (“RFR”) and will replace the Certificate of Deposit (“CD”) rate in the mid to long-term. Within the corresponding hedging relationship of related significant interest rate benchmark, the Group assumed that the spread to be changed on the RFR basis including SOFR would be similar to that included in the interest rate swap used as a hedging instrument, and no other changes were assumed. Details of the Group’s exposure to hedging relationships related to the interest rate benchmark reform as of December 31, 2021, are as follows: December 31, 2021 Interest rate benchmark Currency Carrying amount of non-derivative assets Carrying amount of non-derivative liabilities Notional amount of (In millions of Korean won and millions of US dollars) CD#3M KRW 3,123,388 2,470,123 5,690,000 USD#LIBOR#3M USD 2,695 2,829 5,511 USD#LIBOR#6M USD 224 — 225

Loans Measured at Amortized Cos

Loans Measured at Amortized Cost	12 Months Ended
	Dec. 31, 2021
Trade and other receivables [abstract]
Loans Measured at Amortized Cost	10. Loans Measured at Amortized Cost 10.1 Details of loans as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Loans measured at amortized cost ￦ 379,734,020 ￦ 420,910,259 Deferred loan origination fees and costs 716,327 674,069 Less: Allowances for credit losses (3,283,363 ) (3,684,055 ) ￦ 377,166,984 ￦ 417,900,273 10.2 Details of loans to banks as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Loans measured at amortized cost ￦ 5,577,728 ￦ 8,325,177 Less: Allowances for credit losses (682 ) (443 ) ￦ 5,577,046 ￦ 8,324,734 10.3 Details of loan types and customer types of loans to customers other than banks as of December 31, 2020 and 2021, are as follows: December 31, 2020 Retail Corporate Credit card Total (In millions of Korean won) Loans in Korean won ￦ 175,062,187 ￦ 142,812,751 ￦ — ￦ 317,874,938 Loans in foreign currencies 3,092,630 16,159,722 — 19,252,352 Domestic import usance bills — 2,152,059 — 2,152,059 Off-shore — 1,203,737 — 1,203,737 Call loans — 1,582,251 — 1,582,251 Bills bought in Korean won — 1,620 — 1,620 Bills bought in foreign currencies — 1,739,262 — 1,739,262 Guarantee payments under acceptances and guarantees 10 8,011 — 8,021 Credit card receivables in Korean won — — 18,734,560 18,734,560 Credit card receivables in foreign currencies — — 63,071 63,071 Bonds purchased under repurchase agreements — 3,175,080 — 3,175,080 Privately placed bonds — 1,154,162 — 1,154,162 Factored receivables 104 3 — 107 Lease receivables 1,105,001 335,582 — 1,440,583 Loans for installment credit 6,440,521 50,295 — 6,490,816 185,700,453 170,374,535 18,797,631 374,872,619 Proportion (%) 49.54 45.45 5.01 100.00 Less: Allowances for credit losses (910,088 ) (1,671,098 ) (701,495 ) (3,282,681 ) ￦ 184,790,365 ￦ 168,703,437 ￦ 18,096,136 ￦ 371,589,938 December 31, 2021 Retail Corporate Credit card Total (In millions of Korean won) Loans in Korean won ￦ 184,872,384 ￦ 162,081,901 ￦ — ￦ 346,954,285 Loans in foreign currencies 3,990,253 20,865,495 — 24,855,748 Domestic import usance bills — 3,311,142 — 3,311,142 Off-shore — 1,064,623 — 1,064,623 Call loans — 902,301 — 902,301 Bills bought in Korean won — 2,209 — 2,209 Bills bought in foreign currencies — 2,001,046 — 2,001,046 Guarantee payments under acceptances and guarantees 7 20,773 — 20,780 Credit card receivables in Korean won — — 20,766,340 20,766,340 Credit card receivables in foreign currencies — — 57,980 57,980 Bonds purchased under repurchase agreements — 4,855,194 — 4,855,194 Privately placed bonds — 758,557 — 758,557 Factored receivables 113 458 — 571 Lease receivables 778,425 513,714 — 1,292,139 Loans for installment credit 6,265,896 150,340 — 6,416,236 195,907,078 196,527,753 20,824,320 413,259,151 Proportion (%) 47.40 47.56 5.04 100.00 Less: Allowances for credit losses (1,004,995 ) (1,886,473 ) (792,144 ) (3,683,612 ) ￦ 194,902,083 ￦ 194,641,280 ￦ 20,032,176 ￦ 409,575,539 10.4 Changes in deferred loan origination fees and costs for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Increase Decrease Business combination Others Ending (In millions of Korean won) Deferred loan origination costs Loans in Korean won ￦ 645,305 ￦ 502,044 ￦ (473,392 ) ￦ — ￦ — ￦ 673,957 Others 1 96,378 53,345 (63,509 ) 9,376 — 95,590 741,683 555,389 (536,901 ) 9,376 — 769,547 Deferred loan origination fees Loans in Korean won 8,600 6,681 (6,133 ) — — 9,148 Others 2 4,813 21,636 (26,396 ) 48,117 (4,098 ) 44,072 13,413 28,317 (32,529 ) 48,117 (4,098 ) 53,220 ￦ 728,270 ￦ 527,072 ￦ (504,372 ) ￦ (38,741 ) ￦ 4,098 ￦ 716,327 2021 Beginning Increase Decrease Others Ending (In millions of Korean won) Deferred loan origination costs Loans in Korean won ￦ 673,957 ￦ 418,732 ￦ (424,785 ) ￦ — ￦ 667,904 Others 1 95,590 44,728 (63,619 ) (4 ) 76,695 769,547 463,460 (488,404 ) (4 ) 744,599 Deferred loan origination fees Loans in Korean won 9,148 11,909 (3,556 ) — 17,501 Others 2 44,072 32,667 (27,332 ) 3,622 53,029 53,220 44,576 (30,888 ) 3,622 70,530 ￦ 716,327 ￦ 418,884 ￦ (457,516 ) ￦ (3,626 ) ￦ 674,069 1 Includes deferred loan origination costs related to credit card receivables, loans for installment credit, and finance lease receivables. 2 Includes deferred loan origination fees related to loans in foreign currencies executed by PT Bank KB Bukopin Tbk and PRASAC Microfinance Institution Plc.

Allowances for Credit Losses

Allowances for Credit Losses	12 Months Ended
	Dec. 31, 2021
Reconciliation of changes in allowance account for credit losses of financial assets [abstract]
Allowances for Credit Losses	11. Allowances for Credit Losses 11.1 Changes in allowances for credit losses of loans measured at amortized cost for the years ended December 31, 2020 and 2021, are as follows: 2020 Retail Corporate Credit card 12-month expected credit losses Lifetime expected credit 12-month credit losses Lifetime expected credit 12-month Lifetime expected credit Non-impaired Impaired Non-impaired Impaired Non-impaired Impaired (In millions of Korean won) Beginning ￦ 278,380 ￦ 224,905 ￦ 208,037 ￦ 215,069 ￦ 290,310 ￦ 451,607 ￦ 209,651 ￦ 266,183 ￦ 263,874 Transfer between stages: Transfer to 12-month 123,666 (121,970 ) (1,696 ) 119,723 (111,708 ) (8,015 ) 48,959 (47,611 ) (1,348 ) Transfer to lifetime expected credit losses (91,410 ) 182,076 (90,666 ) (56,655 ) 146,690 (90,035 ) (25,227 ) 26,379 (1,152 ) Impairment (3,301 ) (131,852 ) 135,153 (3,365 ) (48,773 ) 52,138 (2,273 ) (13,657 ) 15,930 Write-offs — (5 ) (460,734 ) — (1 ) (321,583 ) — — (502,275 ) Sales (1,561 ) (99 ) (1,131 ) (8 ) — (21,069 ) — — — Provision (reversal) for credit losses 1,2 49,459 78,413 428,220 (2,059 ) 113,335 180,162 (26,042 ) 2,925 496,162 Business combination 50,664 9,545 53,532 99,824 24,303 668,426 89 — 4,409 Others (exchange differences, etc.) (2,092 ) (435 ) (5,010 ) (3,747 ) (3,219 ) (19,570 ) — — (13,481 ) Ending 3 ￦ 403,805 ￦ 240,578 ￦ 265,705 ￦ 368,782 ￦ 410,937 ￦ 892,061 ￦ 205,157 ￦ 234,219 ￦ 262,119 2021 Retail Corporate Credit card 12-month expected credit losses Lifetime expected credit 12-month credit losses Lifetime expected credit 12-month Lifetime expected credit Non-impaired Impaired Non-impaired Impaired Non-impaired Impaired (In millions of Korean won) Beginning ￦ 403,805 ￦ 240,578 ￦ 265,705 ￦ 368,782 ￦ 410,937 ￦ 892,061 ￦ 205,157 ￦ 234,219 ￦ 262,119 Transfer between stages: Transfer to 12-month 125,634 (120,132 ) (5,502 ) 133,798 (71,772 ) (62,026 ) 45,938 (44,858 ) (1,080 ) Transfer to lifetime expected credit losses (97,040 ) 115,427 (18,387 ) (71,902 ) 92,245 (20,343 ) (34,208 ) 35,846 (1,638 ) Impairment (6,312 ) (49,244 ) 55,556 (2,942 ) (42,158 ) 45,100 (2,228 ) (12,580 ) 14,808 Write-offs — 12 (411,083 ) — (3 ) (239,815 ) — — (440,721 ) Sales (1,112 ) (53 ) (3,592 ) (179 ) — (16,257 ) — — — Provision (reversal) for credit losses 1,2 40,616 52,528 397,492 14,299 88,230 338,746 (39,533 ) 110,022 474,041 Business combination 8,315 2,223 7,194 — — 1,654 — — — Others (exchange differences, etc.) 77 532 1,758 5,942 675 21,844 42 — (13,202 ) Ending 3 ￦ 473,983 ￦ 241,871 ￦ 289,141 ￦ 447,798 ￦ 478,154 ￦ 960,964 ￦ 175,168 ￦ 322,649 ￦ 294,327 1 Provision for credit losses in the consolidated statements of comprehensive income also includes provision (reversal) for credit losses of due from financial institutions (Note 7.3), provision (reversal) for credit losses of financial investments (Note 12.5), provision (reversal) for credit losses of unused commitments, acceptances and guarantees (Note 24.2), provision (reversal) for credit losses of financial guarantee contracts (Note 24.3), and provision (reversal) for credit losses of other financial assets (Note 19.2). 2 Includes ￦ 379,179 million and ￦ 387,860 million of collections from written-off 3 Includes additional allowances of ￦ 43,777 million and ￦ 50,360 million for industries and borrowers which are highly affected by COVID-19 (non-impaired) The Group manages the written-off 11.2 Changes in gross carrying amount of loans for the years ended December 31, 2020 and 2021, are as follows: 2020 12-month credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 316,377,009 ￦ 23,814,108 ￦ 1,900,958 Transfer between stages: Transfer to 12-month 26,751,021 (26,629,210 ) (121,811 ) Transfer to lifetime expected credit losses (non-impaired) (33,475,491 ) 34,603,648 (1,128,157 ) Transfer to lifetime expected credit losses (impaired) (596,861 ) (2,287,196 ) 2,884,057 Write-offs — (6 ) (1,284,592 ) Sales (4,324,146 ) (20,907 ) (200,182 ) Business combination 7,029,580 570,710 1,711,823 Net increase (decrease) (execution, repayment, and others) 36,757,668 (1,546,945 ) (334,731 ) Ending ￦ 348,518,780 ￦ 28,504,202 ￦ 3,427,365 2021 12-month credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 348,518,780 ￦ 28,504,202 ￦ 3,427,365 Transfer between stages: Transfer to 12-month 31,046,440 (30,615,747 ) (430,693 ) Transfer to lifetime expected credit losses (non-impaired) (36,815,970 ) 37,276,737 (460,767 ) Transfer to lifetime expected credit losses (impaired) (668,120 ) (1,486,835 ) 2,154,955 Write-offs — 9 (1,091,619 ) Sales (2,892,774 ) (8,541 ) (151,714 ) Business combination 116,067 3,924 12,808 Net increase (decrease) (execution, repayment, and others) 46,013,068 (895,012 ) 27,765 Ending ￦ 385,317,491 ￦ 32,778,737 ￦ 3,488,100

Financial Assets at Fair Value

Financial Assets at Fair Value through Profit or Loss and Financial Investments	12 Months Ended
	Dec. 31, 2021
Financial assets at fair value through profit or loss [abstract]
Financial Assets at Fair Value through Profit or Loss and Financial Investments	12. Financial Assets at Fair Value through Profit or Loss and Financial Investments 12.1 Details of financial assets at fair value through profit or loss and financial investments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial assets at fair value through profit or loss Debt securities: Government and public bonds ￦ 9,315,317 ￦ 8,294,084 Financial bonds 17,897,348 16,887,594 Corporate bonds 3,997,753 5,433,010 Asset-backed securities 236,130 197,865 Beneficiary certificates 14,200,802 15,849,129 Derivative-linked securities 2,218,502 1,543,188 Other debt securities 10,549,248 14,797,822 Equity securities: Stocks 1,632,619 1,804,507 Other equity securities 459,694 614,956 Loans: Privately placed bonds 212,021 230,006 Other loans 125,962 39,290 Due from financial institutions: Other due from financial institutions 100,094 200,742 Others 89,965 113,622 ￦ 61,035,455 ￦ 66,005,815 Financial investments Financial assets at fair value through other comprehensive income Debt securities: Government and public bonds ￦ 14,735,340 ￦ 14,317,477 Financial bonds 23,194,387 21,928,735 Corporate bonds 18,721,327 18,986,005 Asset-backed securities 1,795,840 996,428 Other debt securities 9,995 30,866 Equity securities: Stocks 2,852,158 3,588,415 Equity investments 37,602 27,211 Other equity securities 185,139 187,502 Loans: Privately placed bonds 265,426 299,634 Other loans 27,983 13,970 61,825,197 60,376,243 Financial assets at amortized cost Debt securities: Government and public bonds 17,193,289 21,447,622 Financial bonds 5,678,949 3,850,954 Corporate bonds 8,181,961 12,246,441 Asset-backed securities 5,788,587 6,899,675 Other debt securities 30,392 31,105 Less: Allowances for credit losses (2,949 ) (4,169 ) 36,870,229 44,471,628 ￦ 98,695,426 ￦ 104,847,871 12.2 Dividend income from equity securities designated at fair value through other comprehensive income for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 From the equity securities From the equity securities held From the equity securities From the equity securities held (In millions of Korean won) Equity securities measured at fair value through other comprehensive income: Stocks Listed ￦ 7,000 ￦ 11,843 ￦ 7,106 ￦ 300 Unlisted — 22,241 372 19,035 Equity investments — 285 — 114 Other equity securities — 3,755 — 6,877 ￦ 7,000 ￦ 38,124 ￦ 7,478 ￦ 26,326 12.3 Derecognized equity securities measured at fair value through other comprehensive income for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 Disposal price Accumulated disposal date Disposal price Accumulated disposal date (In millions of Korean won) Equity securities measured at fair value through other comprehensive income: Stocks Listed ￦ 516,883 ￦ 326,394 ￦ 575,288 ￦ (313,427 ) Unlisted 13 13 5,577 4,559 Equity investments 3 3 — — ￦ 516,899 ￦ 326,410 ￦ 580,865 ￦ (308,868 ) 12.4 Provision (reversal) for credit losses of financial investments for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 Provision Reversal Total (In millions of Korean won) Securities measured at fair value through other comprehensive income ￦ 1,537 ￦ (1,144 ) ￦ 393 Loans measured at fair value through other comprehensive income 170 (982 ) (812 ) Securities measured at amortized cost 216 (280 ) (64 ) ￦ 1,923 ￦ (2,406 ) ￦ (483 ) 2020 Provision Reversal Total (In millions of Korean won) Securities measured at fair value through other comprehensive income ￦ 4,297 ￦ (229 ) ￦ 4,068 Loans measured at fair value through other comprehensive income 202 (316 ) (114 ) Securities measured at amortized cost 1,916 (636 ) 1,280 ￦ 6,415 ￦ (1,181 ) ￦ 5,234 2021 Provision Reversal Total (In millions of Korean won) Securities measured at fair value through other comprehensive income ￦ 7,466 ￦ (385 ) ￦ 7,081 Loans measured at fair value through other comprehensive income 237 (15 ) 222 Securities measured at amortized cost 1,892 (691 ) 1,201 ￦ 9,595 ￦ (1,091 ) ￦ 8,504 12.5 Changes in allowances for credit losses of financial investments for the years ended December 31, 2020 and 2021, are as follows: 2020 12-month expected credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 5,370 ￦ — ￦ — Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Sales (589 ) — — Provision for credit losses 5,195 39 — Others (68 ) — 73 Ending ￦ 9,908 ￦ 39 ￦ 73 2021 12-month expected credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 9,908 ￦ 39 ￦ 73 Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Sales (1,568 ) (4 ) — Provision (reversal) for credit losses 8,512 (11 ) 3 Others (32 ) 4 — Ending ￦ 16,820 ￦ 28 ￦ 76

Investments in Associates and J

Investments in Associates and Joint Ventures	12 Months Ended
	Dec. 31, 2021
Disclosure of associates [abstract]
Investments in Associates and Joint Ventures	13. Investments in Associates and Joint Ventures 13.1 Details of investments in associates and joint ventures as of December 31, 2020 and 2021, are as follows: December 31, 2020 Ownership Acquisition Share of net Carrying Industry Location (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 1 15.19 ￦ 551 ￦ 1,279 ￦ 1,279 Investment finance Korea KB GwS Private Securities Investment Trust 26.74 113,880 142,799 141,359 Investment finance Korea KB-KDBC Pre-IPO 2 66.66 13,601 16,042 16,042 Investment finance Korea KB Star Office Private Real Estate Master Fund No.1 21.05 20,000 20,413 20,066 Investment finance Korea Balhae Infrastructure Company 1 12.61 106,107 106,624 106,624 Investment finance Korea Aju Good Technology Venture Fund 38.46 17,113 21,351 21,348 Investment finance Korea SY Auto Capital Co., Ltd. 49.00 9,800 18,713 16,144 Auto loans Korea Incheon Bridge Co., Ltd. 1 14.99 9,158 (18,100 ) — Operation of highways and related facilities Korea Big Dipper Co., Ltd. 25.14 440 (5 ) — Research, consulting, and big data Korea Paycoms Co., Ltd. 3 11.70 800 72 198 System software publishing Korea Food Factory Co., Ltd. 4 22.22 1,000 632 1,281 Farm product distribution Korea KBSP Private Equity Fund No.4 1 14.95 6,100 5,950 5,950 Investment finance Korea KB Private Equity Fund No.3 1 15.69 — 94 94 Investment finance Korea Korea Credit Bureau Co., Ltd. 1 9.00 4,500 7,153 7,153 Credit information Korea KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 25.00 9,739 9,845 9,845 Investment finance Korea Keystone-Hyundai Securities No.1 Private Equity Fund 1 4.49 1,908 1,556 1,556 Investment finance Korea KB Social Impact Investment Fund 30.00 3,000 2,874 2,874 Investment finance Korea KB-Solidus 2 43.33 48,677 45,516 46,213 Investment finance Korea POSCO-KB 31.25 10,375 12,895 12,895 Investment finance Korea KB-TS 2 56.00 16,576 17,630 17,630 Investment finance Korea KB-Brain Scale-up 2 42.55 26,050 27,513 26,763 Investment finance Korea KB-SJ 1 18.52 4,500 4,133 4,133 Investment finance Korea UNION Media Commerce Fund 28.99 1,000 960 960 Investment Korea KB-Stonebridge 1 14.56 14,308 16,636 16,636 Investment finance Korea KB SPROTT Renewable Private Equity Fund No.1 2 37.69 5,795 5,049 5,049 Investment finance Korea KB-UTC 2 44.29 17,416 16,999 16,999 Investment finance Korea WJ Private Equity Fund No.1 26.95 10,000 9,711 9,711 Investment finance Korea All Together Korea Fund No.2 5 99.99 10,000 10,023 10,023 Asset management Korea KB-NAU 1 12.00 5,700 5,611 5,611 Asset management Korea JR Global REIT 26.07 215,854 215,854 215,854 Real estate management Korea Project Vanilla Co., Ltd. 49.00 2,450 2,151 2,151 Investment finance Korea December & Company Inc. 1 17.63 24,849 24,402 24,402 Investment finance Korea 2020 KB Fintech Renaissance Fund 1 5.05 550 547 547 Investment finance Korea KB Material and Parts No.1 PEF 1 14.47 3,400 3,371 3,371 Investment finance Korea FineKB Private Equity Fund No.1 25.00 — — — Investment finance Korea Others 2,475 1,004 674 ￦ 737,672 ￦ 757,297 ￦ 771,435 December 31, 2021 Ownership Acquisition Share of net Carrying Industry Location (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 1 15.19 ￦ 259 ￦ 1,622 ￦ 1,622 Investment finance Korea KB-KDBC Pre-IPO 2 66.66 8,801 11,789 11,789 Investment finance Korea KB Star Office Private Real Estate Master Fund No.1 21.05 20,000 26,240 26,240 Investment finance Korea Balhae Infrastructure Company 1 12.61 105,924 99,785 99,785 Investment finance Korea Aju Good Technology Venture Fund 38.46 12,343 22,921 22,921 Investment finance Korea SY Auto Capital Co., Ltd. 49.00 9,800 19,835 18,222 Auto loans Korea Incheon Bridge Co., Ltd. 1 14.99 9,158 (19,481 ) — Operation of highways and related facilities Korea Big Dipper Co., Ltd. 25.14 440 (147 ) — Research, consulting, and big data Korea Paycoms Co., Ltd. 3 11.05 800 181 525 System software publishing Korea Food Factory Co., Ltd. 4 22.22 1,000 633 1,320 Farm product distribution Korea KBSP Private Equity Fund No.4 1 14.95 6,100 5,628 5,628 Investment finance Korea Korea Credit Bureau Co., Ltd. 1 9.00 4,500 4,497 4,497 Credit information Korea KB Social Impact Investment Fund 30.00 4,500 4,282 4,282 Investment finance Korea KB-Solidus 2 43.33 45,557 48,201 48,898 Investment finance Korea POSCO-KB 31.25 2,776 5,413 5,413 Investment finance Korea KB-TS 2 56.00 14,280 16,828 16,828 Investment finance Korea KB-Brain Scale-up 2 42.55 25,250 29,669 28,919 Investment finance Korea KB-SJ 1 18.52 4,999 4,146 4,146 Investment finance Korea UNION Media Commerce Fund 28.99 1,000 959 959 Investment finance Korea KB-Stonebridge 1 14.56 21,641 21,948 21,948 Investment finance Korea KB SPROTT Renewable Private Equity Fund No.1 2 37.69 5,795 4,680 4,680 Investment finance Korea KB-UTC 2 44.29 21,375 20,972 20,972 Investment finance Korea WJ Private Equity Fund No.1 26.95 10,000 9,604 9,604 Investment finance Korea All Together Korea Fund No.2 5 99.99 10,000 10,070 10,070 Asset management Korea KB-NAU 1 12.00 13,392 15,254 15,254 Asset management Korea Project Vanilla Co., Ltd. 49.00 2,450 525 525 Investment finance Korea December & Company Inc. 1 16.78 25,330 9,054 21,388 Investment finance Korea 2020 KB Fintech Renaissance Fund 1 5.05 550 618 618 Investment finance Korea KB Material and Parts No.1 PEF 1 14.47 3,400 3,343 3,343 Investment finance Korea FineKB Private Equity Fund No.1 25.00 8,375 8,067 8,067 Investment finance Korea KB Bio Private Equity No.3 Ltd. 1 12.20 10,000 9,950 9,950 Investment finance Korea G payment Joint Stock Company 43.84 9,029 3,175 9,350 Investment advisory and securities trading Vietnam 498 Seventh Owners LLC 6 49.90 166,851 — — Real estate investment United States Smart Korea KB Future9-Sejong Venture Fund 38.46 1,000 962 962 Investment finance Korea KB-KTB 2 50.50 5,600 5,503 5,554 Investment finance Korea KB-SOLIDUS 2 88.23 1,800 1,800 1,800 Investment finance Korea Paramark KB Fund No.1 20.69 2,040 1,850 1,850 Investment finance Korea Others 2,475 81 789 ￦ 598,590 ￦ 410,457 ￦ 448,718 1 As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies. 2 In order to direct relevant activities, it is necessary to obtain the consent of the two co-operative 3 The ownership of Paycoms Co., Ltd. would be 22.96 21.84 4 The ownership of Food Factory Co., Ltd. would be 30.00 30.00 5 As of December 31, 2020 and 2021, the Group participates in the investment management committee but cannot exercise control. 6 The investment was classified as assets of a disposal group held for sale as of December 31, 2021. In accordance with IAS No.28 Investments in Associates and Joint Ventures Although the Group holds 20% or more of the ownership, investment trusts with limited influence on related activities according to trust contracts, and companies with limited influence on related activities due to bankruptcy and corporate rehabilitation proceedings are excluded from associates. 13.2 Condensed financial information, adjustments to the carrying amount, and dividend from major investments in associates and joint ventures as of and for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 * Total assets Total Paid-in Equity Share of net Unrealized gains and others Consolidated amount (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 8,423 ￦ 3 ￦ 5,940 ￦ 8,420 ￦ 1,279 ￦ — ￦ 1,279 KB GwS Private Securities Investment Trust 534,764 741 425,814 534,023 142,799 (1,440 ) 141,359 KB-KDBC Pre-IPO 24,655 592 20,400 24,063 16,042 — 16,042 KB Star Office Private Real Estate Master Fund No.1 231,018 122,298 95,000 108,720 20,413 (347 ) 20,066 Balhae Infrastructure Company 847,758 1,870 841,784 845,888 106,624 — 106,624 Aju Good Technology Venture Fund 57,776 2,265 44,500 55,511 21,351 (3 ) 21,348 SY Auto Capital Co., Ltd. 89,462 51,272 20,000 38,190 18,713 (2,569 ) 16,144 Incheon Bridge Co., Ltd. 579,386 700,133 61,096 (120,747 ) (18,100 ) 18,100 — Big Dipper Co., Ltd. 285 306 1,750 (21 ) (5 ) 5 — Paycoms Co., Ltd. 2,690 2,073 855 617 72 126 198 Food Factory Co., Ltd. 7,613 4,767 450 2,846 632 649 1,281 KBSP Private Equity Fund No.4 39,795 — 40,800 39,795 5,950 — 5,950 KB Private Equity Fund No.3 1,132 533 — 599 94 — 94 Korea Credit Bureau Co., Ltd. 117,077 37,599 10,000 79,478 7,153 — 7,153 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 42,585 3,205 38,960 39,380 9,845 — 9,845 Keystone-Hyundai Securities No.1 Private Equity Fund 178,848 132,123 42,837 46,725 1,556 — 1,556 KB Social Impact Investment Fund 9,585 4 10,000 9,581 2,874 — 2,874 KB-Solidus 106,215 1,179 75,600 105,036 45,516 697 46,213 POSCO-KB 41,807 541 33,200 41,266 12,895 — 12,895 KB-TS 34,972 3,490 29,600 31,482 17,630 — 17,630 KB-Brain Scale-up 64,968 313 62,980 64,655 27,513 (750 ) 26,763 KB-SJ 22,327 6 24,300 22,321 4,133 — 4,133 UNION Media Commerce Fund 3,318 7 3,450 3,311 960 — 960 KB-Stonebridge 114,712 496 98,235 114,216 16,636 — 16,636 KB SPROTT Renewable Private Equity Fund No.1 13,896 497 15,376 13,399 5,049 — 5,049 December 31, 2020 * Total assets Total Paid-in Equity Share of net Unrealized gains and others Consolidated amount (In millions of Korean won) KB-UTC 38,585 207 39,319 38,378 16,999 — 16,999 WJ Private Equity Fund No.1 36,197 170 37,100 36,027 9,711 — 9,711 All Together Korea Fund No.2 10,025 1 10,001 10,024 10,023 — 10,023 KB-NAU 47,607 850 47,500 46,757 5,611 — 5,611 JR Global REIT 1,859,214 1,043,068 165,600 816,146 215,854 — 215,854 Project Vanilla Co., Ltd. 4,445 132 5,000 4,313 2,151 — 2,151 December & Company Inc. 68,173 3,305 35,441 64,868 24,402 — 24,402 2020 KB Fintech Renaissance Fund 10,841 5 10,900 10,836 547 — 547 KB Material and Parts No.1 PEF 23,296 — 23,500 23,296 3,371 — 3,371 FineKB Private Equity Fund No.1 — 77 — (77 ) — — — 2020* Operating revenue Net (loss) Other comprehensive income (loss) Total comprehensive income (loss) Dividends (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 1,942 ￦ 1,053 ￦ — ￦ 1,053 ￦ — KB GwS Private Securities Investment Trust 48,501 47,520 — 47,520 9,525 KB-KDBC Pre-IPO 5,151 4,421 — 4,421 — KB Star Office Private Real Estate Master Fund No.1 2,392 1,076 — 1,076 — Balhae Infrastructure Company 63,781 89,757 — 89,757 6,973 Aju Good Technology Venture Fund 8,685 2,815 — 2,815 — SY Auto Capital Co., Ltd. 17,404 2,057 (49 ) 2,008 — Incheon Bridge Co., Ltd. 70,345 (23,200 ) — (23,200 ) — Big Dipper Co., Ltd. 942 (305 ) — (305 ) — Paycoms Co., Ltd. 1,391 505 — 505 — Food Factory Co., Ltd. 9,282 407 — 407 — KBSP Private Equity Fund No.4 2 306 — 306 — KB Private Equity Fund No.3 — 15,442 — 15,442 2,082 Korea Credit Bureau Co., Ltd. 107,810 13,391 — 13,391 89 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 1,629 626 — 626 — Keystone-Hyundai Securities No.1 Private Equity Fund 16,586 (1,536 ) — (1,536 ) — KB Social Impact Investment Fund 8 (301 ) — (301 ) — KB-Solidus 6,435 (12,655 ) — (12,655 ) — POSCO-KB 12,842 10,154 — 10,154 — KB-TS 5,342 4,051 — 4,051 — KB-Brain Scale-up 5,257 3,013 — 3,013 — KB-SJ — (689 ) — (689 ) — UNION Media Commerce Fund — (3 ) — (3 ) — KB-Stonebridge 20,068 17,842 — 17,842 — KB SPROTT Renewable Private Equity Fund No.1 1 (991 ) — (991 ) — KB-UTC — (866 ) — (866 ) — WJ Private Equity Fund No.1 2 (1,073 ) — (1,073 ) — All Together Korea Fund No.2 187 150 — 150 — KB-NAU 2,901 (743 ) — (743 ) — JR Global REIT — — — — — Project Vanilla Co., Ltd. — (611 ) — (611 ) — December & Company Inc. 756 (2,469 ) — (2,469 ) — 2020 KB Fintech Renaissance Fund 1 (64 ) — (64 ) — KB Material and Parts No.1 PEF — (204 ) — (204 ) — FineKB Private Equity Fund No.1 — (77 ) — (77 ) — December 31, 2021* Total assets Total Paid-in Equity Share of net Unrealized gains and others Consolidated amount (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 10,678 ￦ 3 ￦ 4,015 ￦ 10,675 ￦ 1,622 ￦ — ￦ 1,622 KB-KDBC Pre-IPO 18,069 385 13,200 17,684 11,789 — 11,789 KB Star Office Private Real Estate Master Fund No.1 247,259 122,620 95,000 124,639 26,240 — 26,240 Balhae Infrastructure Company 853,961 62,336 840,323 791,625 99,785 — 99,785 Aju Good Technology Venture Fund 64,303 4,703 32,100 59,600 22,921 — 22,921 SY Auto Capital Co., Ltd. 88,144 47,665 20,000 40,479 19,835 (1,613 ) 18,222 Incheon Bridge Co., Ltd. 560,570 690,530 61,096 (129,960 ) (19,481 ) 19,481 — Big Dipper Co., Ltd. 143 748 1,750 (605 ) (147 ) 147 — Paycoms Co., Ltd. 3,597 1,960 855 1,637 181 344 525 Food Factory Co., Ltd. 8,332 5,482 450 2,850 633 687 1,320 KBSP Private Equity Fund No.4 37,646 5 40,800 37,641 5,628 — 5,628 Korea Credit Bureau Co., Ltd. 128,297 78,328 10,000 49,969 4,497 — 4,497 KB Social Impact Investment Fund 14,431 157 15,000 14,274 4,282 — 4,282 KB-Solidus 112,358 1,126 68,400 111,232 48,201 697 48,898 POSCO-KB 17,754 432 8,880 17,322 5,413 — 5,413 KB-TS 35,279 5,228 25,500 30,051 16,828 — 16,828 KB-Brain Scale-up 69,943 221 61,100 69,722 29,669 (750 ) 28,919 KB-SJ 22,947 557 27,000 22,390 4,146 — 4,146 UNION Media Comm e 3,318 10 3,450 3,308 959 — 959 KB-Stonebridge 151,004 316 148,587 150,688 21,948 — 21,948 KB SPROTT Renewable Private Equity Fund No.1 13,886 1,467 15,376 12,419 4,680 — 4,680 KB-UTC 47,848 497 48,260 47,351 20,972 — 20,972 WJ Private Equity Fund No.1 35,799 170 37,100 35,629 9,604 — 9,604 All Together Korea Fund No.2 10,073 1 10,002 10,072 10,070 — 10,070 KB-NAU 127,960 844 111,600 127,116 15,254 — 15,254 Project Vanilla Co., Ltd. 1,283 211 5,000 1,072 525 — 525 December & Company Inc. 71,219 17,276 37,241 53,943 9,054 12,334 21,388 2020 KB Fintech Renaissance Fund 12,252 5 10,900 12,247 618 — 618 KB Material and Parts No.1 PEF 23,104 — 23,500 23,104 3,343 — 3,343 FineKB Private Equity Fund No.1 32,583 315 33,500 32,268 8,067 — 8,067 KB Bio Private Equity No.3 Ltd. 81,691 101 82,000 81,590 9,950 — 9,950 G payment Joint Stock Company 7,797 557 2,950 7,240 3,175 6,175 9,350 Smart Korea KB Future9-Sejong Venture Fund 2,581 81 2,600 2,500 962 — 962 KB-KTB 11,008 101 11,000 10,907 5,503 51 5,554 KB-SOLIDUS 2,040 — 2,040 2,040 1,800 — 1,800 Paramark KB Fund No.1 8,943 3 9,860 8,940 1,850 — 1,850 2021* Operating revenue Net profit (loss) Other comprehensive income (loss) Total comprehensive income (loss) Dividends (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 4,594 ￦ 4,180 ￦ — ￦ 4,180 ￦ — KB-KDBC Pre-IPO 530 120 — 120 — KB Star Office Private Real Estate Master Fund No.1 18 (127 ) — (127 ) 963 Balhae Infrastructure Company 97,833 19,559 — 19,559 9,121 Aju Good Technology Venture Fund 22,486 15,407 — 15,407 — SY Auto Capital Co., Ltd. 14,316 2,193 104 2,297 — Incheon Bridge Co., Ltd. 84,068 (16,219 ) — (16,219 ) — Big Dipper Co., Ltd. 939 (583 ) — (583 ) — Paycoms Co., Ltd. 1,515 857 — 857 — Food Factory Co., Ltd. 8,853 354 — 354 — KBSP Private Equity Fund No.4 (1,358 ) (2,154 ) — (2,154 ) — Korea Credit Bureau Co., Ltd. 128,150 (27,327 ) — (27,327 ) 90 KB Social Impact Investment Fund 7 (306 ) — (306 ) — KB-Solidus 18,782 13,396 — 13,396 — POSCO-KB 1,880 376 — 376 — KB-TS 2,094 (1,151 ) — (1,151 ) — KB-Brain Scale-up 14,244 8,495 — 8,495 — KB-SJ 170 (2,631 ) — (2,631 ) — UNION Media Commerce Fund — (3 ) — (3 ) — KB-Stonebridge 55,572 54,053 — 54,053 9,895 KB SPROTT Renewable Private Equity Fund No.1 — (983 ) — (983 ) — KB-UTC 1,080 32 — 32 — WJ Private Equity Fund No.1 291 (398 ) — (398 ) — All Together Korea Fund No.2 53 47 — 47 — KB-NAU 20,594 16,252 — 16,252 — Project Vanilla Co., Ltd. — (3,231 ) — (3,231 ) — December & Company Inc. 3,982 (20,767 ) — (20,767 ) — 2020 KB Fintech Renaissance Fund 1,566 1,411 — 1,411 — KB Material and Parts No.1 PEF 451 42 — 42 34 FineKB Private Equity Fund No.1 2 (1,155 ) — (1,155 ) — KB Bio Private Equity No.3 Ltd. 4 (410 ) — (410 ) — G payment Joint Stock Company 819 (762 ) — (762 ) — Smart Korea KB Future9-Sejong Venture Fund 2 (100 ) — (100 ) — KB-KTB 8 (93 ) — (93 ) — KB-SOLIDUS — — — — — Paramark KB Fund No.1 — (920 ) — (920 ) — * The condensed financial information of the associates and joint ventures is adjusted to reflect adjustments, such as fair value adjustments recognized at the time of acquisition and adjustments for differences in accounting policies. 13.3 Changes in carrying amount of investments in associates and joint ventures for the years ended December 31, 2020 and 2021, are as follows: 2020 1 Beginning Acquisition and others Disposal and others Dividends Gains (losses) on method accounting Other hensive income (loss) Ending (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 1,705 ￦ — ￦ (586 ) ￦ — ￦ 160 ￦ — ￦ 1,279 KB GwS Private Securities Investment Trust 136,168 — — (9,525 ) 14,716 — 141,359 KB-KDBC Pre-IPO 18,988 — (6,399 ) — 3,453 — 16,042 KB Star Office Private Real Estate Master Fund No.1 19,839 — — — 227 — 20,066 PT Bank KB Bukopin Tbk 2 121,381 43,909 (54,069 ) — (107,258 ) (3,963 ) — Balhae Infrastructure Company 101,391 893 — (6,973 ) 11,313 — 106,624 Aju Good Technology Venture Fund 23,016 — (2,885 ) — 1,217 — 21,348 SY Auto Capital Co., Ltd. 12,725 — — — 3,422 (3 ) 16,144 Incheon Bridge Co., Ltd. — — — — — — — Big Dipper Co., Ltd. 125 — — — (125 ) — — Paycoms Co., Ltd. 45 — — — 153 — 198 Food Factory Co., Ltd. 1,000 — — — 247 34 1,281 KBSP Private Equity Fund No.4 5,904 — — — 46 — 5,950 KB Private Equity Fund No.3 7,754 — (8,000 ) (2,082 ) 2,422 — 94 Korea Credit Bureau Co., Ltd. 5,991 — — (89 ) 1,251 — 7,153 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 13,616 — (3,231 ) — (540 ) — 9,845 Keystone-Hyundai Securities No.1 Private Equity Fund 1,625 — — — (69 ) — 1,556 KB Social Impact Investment Fund 1,465 1,500 — — (91 ) — 2,874 KB-Solidus 45,718 10,920 (4,940 ) — (5,485 ) — 46,213 POSCO-KB 6,847 5,000 (2,125 ) — 3,173 — 12,895 KB-TS 19,731 2,240 (5,488 ) — 1,232 (85 ) 17,630 KB-Brain Scale-up 19,752 8,000 (3,200 ) — 2,211 — 26,763 KB-SJ 2,761 1,500 — — (128 ) — 4,133 UNION Media Commerce Fund 961 — — — (1 ) — 960 KB-Stonebridge 4,944 9,093 — — 2,599 — 16,636 KB SPROTT Renewable Private Equity Fund No.1 1,295 4,128 — — (374 ) — 5,049 KB-UTC 417 16,966 — — (384 ) — 16,999 WJ Private Equity Fund No.1 — 10,000 — — (289 ) — 9,711 All Together Korea Fund No.2 — 100,000 (90,000 ) — 150 (127 ) 10,023 KB-NAU — 5,700 — — (89 ) — 5,611 JR Global REIT — 219,493 (3,639 ) — — — 215,854 Project Vanilla Co., Ltd. — 2,450 — — (299 ) — 2,151 December & Company Inc. — 30,000 (5,151 ) — (447 ) — 24,402 2020 KB Fintech Renaissance Fund — 550 — — (3 ) — 547 KB Material and Parts No.1 PEF — 3,400 — — (29 ) — 3,371 FineKB Private Equity Fund No.1 — — — — — — — Others 23,076 40,000 (61,862 ) — (899 ) 359 674 ￦ 598,240 ￦ 515,742 ￦ (251,575 ) ￦ (18,669 ) ￦ (68,518 ) ￦ (3,785 ) ￦ 771,435 2021 1 Beginning Acquisition Disposal Dividends Gains Other hensive income Ending (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 1,279 ￦ — ￦ (292 ) ￦ — ￦ 635 ￦ — ￦ 1,622 KB GwS Private Securities Investment Trust 141,359 — (141,359 ) — — — — KB-KDBC Pre-IPO 16,042 — (4,800 ) — 547 — 11,789 KB Star Office Private Real Estate Master Fund No.1 20,066 — — (963 ) 7,137 — 26,240 Balhae Infrastructure Company 106,624 280 (463 ) (9,121 ) 2,465 — 99,785 Aju Good Technology Venture Fund 21,348 — (4,770 ) — 6,343 — 22,921 SY Auto Capital Co., Ltd. 16,144 — — — 2,027 51 18,222 Incheon Bridge Co., Ltd. — — — — — — — Big Dipper Co., Ltd. — — — — — — — Paycoms Co., Ltd. 198 — — — 327 — 525 Food Factory Co., Ltd. 1,281 — — — 7 32 1,320 KBSP Private Equity Fund No.4 5,950 — — — (322 ) — 5,628 KB Private Equity Fund No.3 94 — (13 ) (81 ) — — — Korea Credit Bureau Co., Ltd. 7,153 — — (90 ) (2,566 ) — 4,497 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 9,845 — (9,725 ) (2,120 ) 2,000 — — Keystone-Hyundai Securities No.1 Private Equity Fund 1,556 — (1,044 ) (512 ) — — — KB Social Impact Investment Fund 2,874 1,500 — — (92 ) — 4,282 KB-Solidus 46,213 — (3,120 ) — 5,805 — 48,898 POSCO-KB 12,895 — (7,599 ) — 117 — 5,413 KB-TS 17,630 3,080 (5,376 ) — 1,494 — 16,828 KB-Brain Scale-up 26,763 10,000 (10,800 ) — 2,956 — 28,919 KB-SJ 4,133 499 — — (486 ) — 4,146 UNION Media Commerce Fund 960 — — — (1 ) — 959 KB-Stonebridge 16,636 13,257 (5,924 ) (9,895 ) 7,874 — 21,948 KB SPROTT Renewable Private Equity Fund No.1 5,049 — — — (369 ) — 4,680 KB-UTC 16,999 5,085 (1,126 ) — 14 — 20,972 WJ Private Equity Fund No.1 9,711 — — — (107 ) — 9,604 All Together Korea Fund No.2 10,023 — — — 47 — 10,070 KB-NAU 5,611 7,692 — — 1,951 — 15,254 JR Global REIT 215,854 — (209,250 ) (6,604 ) — — — Project Vanilla Co., Ltd. 2,151 — — — (1,626 ) — 525 December & Company Inc. 24,402 481 — — (3,507 ) 12 21,388 2020 KB Fintech Renaissance Fund 547 — — — 71 — 618 KB Material and Parts No.1 PEF 3,371 — — (34 ) 6 — 3,343 FineKB Private Equity Fund No.1 — 8,375 — — (308 ) — 8,067 KB Bio Private Equity No.3 Ltd. — 10,000 — — (50 ) — 9,950 K The 15th REIT Co., Ltd. — 8,600 (8,600 ) — — — — G payment Joint Stock Company — 9,684 — — (334 ) — 9,350 498 Seventh Owners LLC 3 — 172,907 (169,424 ) (3,483 ) — — — Smart Korea KB Future9-Sejong Venture Fund — 1,000 — — (38 ) — 962 KB-KTB — 5,601 — — (47 ) — 5,554 KB-SOLIDUS — 1,800 — — — — 1,800 Paramark KB Fund No.1 — 2,040 — — (190 ) — 1,850 Others 674 — — — (303 ) 418 789 ￦ 771,435 ￦ 261,881 ￦ (583,685 ) ￦ (32,903 ) ￦ 31,477 ￦ 513 ￦ 448,718 1 Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million for the years ended December 31, 2020 and 2021, respectively. 2 The investment was reclassified from associates to subsidiaries during the year ended December 31, 2020 due to additional share purchase. 3 The investment was classified as assets of a disposal group held for sale as of December 31, 2021. 13.4 Unrecognized share of losses of investments in associates and joint ventures due to the discontinuation of recognizing share of losses, for the years ended December 31, 2020 and 2021, and accumulated amount of unrecognized losses as of December 31, 2020 and 2021, are as follows: Unrecognized losses for the period Accumulated unrecognized losses 2020 2021 December 31, 2020 December 31, 2021 (In millions of Korean won) DSMETAL Co., Ltd. ￦ — ￦ 38 ￦ 65 ￦ 103 Incheon Bridge Co., Ltd. 3,354 1,381 18,100 19,481 Jungdong Steel Co., Ltd. — — 489 489 DPAPS Co., Ltd. 19 — 358 — Shinla Construction Co., Ltd. — — 183 183 Jaeyang Industry Co., Ltd. — — 30 30 Terra Corporation — — 14 14 Jungdo Co., Ltd. 151 239 312 551 Jinseung Tech Co., Ltd. — 12 21 33 Korea NM Tech Co., Ltd. — — 28 28 Chongil Machine & Tools Co., Ltd. — 49 19 68 Skydigital Inc. — 68 106 174 Imt Technology Co., Ltd. 3 (3 ) 3 — Jo Yang Industrial Co., Ltd. 96 9 96 105 IDTECK Co., Ltd. 216 (72 ) 216 144 MJT&I Corp. — 152 — 152 Dae-A — 202 — 202 Il-Kwang — 160 — 160 Inter Shipping Co., Ltd. — 117 — 117 ￦ 3,839 ￦ 2,352 ￦ 20,040 ￦ 22,034

Property and Equipment, and Inv

Property and Equipment, and Investment Properties	12 Months Ended
	Dec. 31, 2021
Disclosure Of Property Plant And Equipment And Investment Property [Abstract]
Property and Equipment, and Investment Properties	14. Property and Equipment, and Investment Properties 14.1 Property and Equipment 14.1.1 Details of property and equipment as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 2,611,604 ￦ — ￦ (1,018 ) ￦ 2,610,586 Buildings 2,607,957 (830,516 ) (5,859 ) 1,771,582 Leasehold improvements 929,120 (833,293 ) — 95,827 Equipment and vehicles 2,040,100 (1,699,442 ) — 340,658 Construction in-progress 44,190 — — 44,190 Right-of-use 1,094,876 (524,165 ) — 570,711 ￦ 9,327,847 ￦ (3,887,416 ) ￦ (6,877 ) ￦ 5,433,554 December 31, 2021 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 2,548,185 ￦ — ￦ (4 ) ￦ 2,548,181 Buildings 2,534,134 (851,730 ) (5,747 ) 1,676,657 Leasehold improvements 977,853 (889,602 ) — 88,251 Equipment and vehicles 2,093,461 (1,782,278 ) — 311,183 Construction in-progress 39,579 — — 39,579 Right-of-use 1,301,864 (725,817 ) — 576,047 ￦ 9,495,076 ￦ (4,249,427 ) ￦ (5,751 ) ￦ 5,239,898 14.1.2 Changes in property and equipment for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Acquisition Transfer 1 Disposal Depreciation 2 Business combination Others Ending (In millions of Korean won) Land ￦ 2,430,794 ￦ 6,475 ￦ (116,264 ) ￦ (2,578 ) ￦ — ￦ 295,421 ￦ (3,262 ) ￦ 2,610,586 Buildings 1,502,923 43,592 190,917 (4,442 ) (61,339 ) 100,984 (1,053 ) 1,771,582 Leasehold improvements 116,124 13,348 34,596 (574 ) (73,394 ) 5,087 640 95,827 Equipment and vehicles 380,353 161,515 3,705 (1,990 ) (221,697 ) 19,873 (1,101 ) 340,658 Construction in-progress 86,303 229,927 (291,336 ) — — 20,022 (726 ) 44,190 Right-of-use 550,880 426,405 53 (203,376 ) (272,686 ) 55,656 13,779 570,711 ￦ 5,067,377 ￦ 881,262 ￦ (178,329 ) ￦ (212,960 ) ￦ (629,116 ) ￦ 497,043 ￦ 8,277 ￦ 5,433,554 2021 Beginning Acquisition Transfer 1 Disposal Depreciation 2 Business combination Others Ending (In millions of Korean won) Land ￦ 2,610,586 ￦ 1,106 ￦ (81,690 ) ￦ (11,399 ) ￦ — ￦ — ￦ 29,578 ￦ 2,548,181 Buildings 1,771,582 2,412 (79,802 ) 6,213 (69,118 ) — 45,370 1,676,657 Leasehold improvements 95,827 13,079 40,148 (891 ) (61,294 ) — 1,382 88,251 Equipment and vehicles 340,658 153,459 2,488 (1,819 ) (187,918 ) 537 3,778 311,183 Construction in-progress 44,190 129,682 (99,763 ) (8,435 ) — — (26,095 ) 39,579 Right-of-use 570,711 614,069 (9 ) (324,104 ) (288,980 ) 20 4,340 576,047 ￦ 5,433,554 ￦ 913,807 ￦ (218,628 ) ￦ (340,435 ) ￦ (607,310 ) ￦ 557 ￦ 58,353 ￦ 5,239,898 1 Includes transfers with investment properties and assets held for sale. 2 Includes depreciation expenses amounting to ￦ 123 million and ￦ 196 million recorded as other operating expenses and others for the years ended December 31, 2020 and 2021, respectively. 14.1.3 Changes in accumulated impairment losses of property and equipment for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of property and equipment ￦ (6,877 ) ￦ (12 ) ￦ — ￦ 12 ￦ (6,877 ) Accumulated impairment losses of right-of-use (1,178 ) — — 1,178 — ￦ (8,055 ) ￦ (12 ) ￦ — ￦ 1,190 ￦ (6,877 ) 2021 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of property and equipment ￦ (6,877 ) ￦ — ￦ — ￦ 1,126 ￦ (5,751 ) 14.2 Investment Properties 14.2.1 Details of investment properties as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 1,568,508 ￦ — ￦ (410 ) ￦ 1,568,098 Buildings 1,092,737 (122,833 ) (4,463 ) 965,441 ￦ 2,661,245 ￦ (122,833 ) ￦ (4,873 ) ￦ 2,533,539 December 31, 2021 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 1,577,800 ￦ — ￦ (447 ) ￦ 1,577,353 Buildings 1,089,761 (147,307 ) (4,863 ) 937,591 ￦ 2,667,561 ￦ (147,307 ) ￦ (5,310 ) ￦ 2,514,944 14.2.2 Valuation techniques and inputs used to measure the fair value of investment properties as of December 31, 2021, are as follows: December 31, 2021 Fair value Valuation techniques Inputs (In millions of Land and buildings ￦ 124,021 Cost approach method -  Price per square meter -  Replacement cost 1,118,793 Market comparison method -  Price per square meter 1,236,638 Discounted cash flow -  Prospective rental market growth rate -  Period of vacancy -  Rental ratio -  Discount rate and others 232,950 Income approach method -  Discount rate -  Capitalization rate -  Vacancy rate Fair value of investment properties amounts to ￦ 2,712,653 million and ￦ 2,712,402 million as of December 31, 2020 and 2021, respectively. Investment properties are measured by qualified independent appraisers with recent experience in valuing similar properties in the same area. In addition, all investment properties are classified as Level 3 in accordance with fair value hierarchy in Note 6.1.2. Rental income from above investment properties amounts to ￦ 157,652 million and ￦ 123,313 million for the years ended December 31, 2020 and 2021, respectively. 14.2.3 Changes in investment properties for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Acquisition Transfer* Disposal Depreciation Business combination Others Ending (In millions of Korean won) Land ￦ 1,537,240 ￦ 34,529 ￦ 61,383 ￦ (167,015 ) ￦ — ￦ 106,944 ￦ (4,983 ) ￦ 1,568,098 Buildings 1,290,748 18,667 37,694 (378,332 ) (38,717 ) 42,169 (6,788 ) 965,441 ￦ 2,827,988 ￦ 53,196 ￦ 99,077 ￦ (545,347 ) ￦ (38,717 ) ￦ 149,113 ￦ (11,771 ) ￦ 2,533,539 2021 Beginning Acquisition Transfer* Disposal Depreciation Others Ending (In millions of Korean won) Land ￦ 1,568,098 ￦ 28,568 ￦ 22,410 ￦ (63,546 ) ￦ — ￦ 21,823 ￦ 1,577,353 Buildings 965,441 90,393 1,802 (112,159 ) (28,933 ) 21,047 937,591 ￦ 2,533,539 ￦ 118,961 ￦ 24,212 ￦ (175,705 ) ￦ (28,933 ) ￦ 42,870 ￦ 2,514,944 * Includes transfers with property and equipment and assets held for sale.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about intangible assets [abstract]
Intangible Assets	15. Intangible Assets 15.1 Details of intangible assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Others Carrying amount (In millions of Korean won) Goodwill ￦ 887,259 ￦ — ￦ (70,517 ) ￦ (53,160 ) ￦ 763,582 Other intangible assets 4,928,003 (2,304,188 ) (36,264 ) — 2,587,551 ￦ 5,815,262 ￦ (2,304,188 ) ￦ (106,781 ) ￦ (53,160 ) ￦ 3,351,133 December 31, 2021 Acquisition cost Accumulated Accumulated Others Carrying amount (In millions of Korean won) Goodwill ￦ 887,259 ￦ — ￦ (70,517 ) ￦ (10,335 ) ￦ 806,407 Other intangible assets 5,227,231 (2,732,394 ) (34,887 ) — 2,459,950 ￦ 6,114,490 ￦ (2,732,394 ) ￦ (105,404 ) ￦ (10,335 ) ￦ 3,266,357 15.2 Details of goodwill as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Acquisition cost Carrying Acquisition cost Carrying (In millions of Korean won) Housing & Commercial Bank ￦ 65,288 ￦ 65,288 ￦ 65,288 ￦ 65,288 Kookmin Bank Cambodia Plc. 1,202 — 1,202 — KB Securities Co., Ltd. 70,265 58,889 70,265 58,889 KB Capital Co., Ltd. 79,609 79,609 79,609 79,609 KB Savings Bank Co., Ltd. 115,343 57,404 115,343 57,404 KB Securities Vietnam Joint Stock Company 13,092 12,234 13,092 13,533 KB Daehan Specialized Bank Plc. 1,515 1,470 1,515 1,601 PRASAC Microfinance Institution Plc. 396,942 356,570 396,942 388,524 PT Sunindo Kookmin Best Finance 2,963 2,963 2,963 2,894 PT Bank KB Bukopin Tbk 89,220 80,002 89,220 85,893 PT. KB Finansia Multi Finance 51,820 49,153 51,820 52,772 ￦ 887,259 ￦ 763,582 ￦ 887,259 ￦ 806,407 * Includes the effect of exchange differences and others. 15.3 Changes in accumulated impairment losses of goodwill for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Impairment Others Ending (In millions of Korean won) Accumulated impairment losses of goodwill ￦ (70,517 ) ￦ — ￦ — ￦ (70,517 ) 2021 Beginning Impairment Others Ending (In millions of Korean won) Accumulated impairment losses of goodwill ￦ (70,517 ) ￦ — ￦ — ￦ (70,517 ) 15.4 Details of goodwill allocation to cash-generating units and related information for impairment testing as of December 31, 2021 are as follows: December 31, 2021 Carrying Recoverable amount Discount rate Permanent (In millions of Korean won) Housing & Commercial Bank Retail banking ￦ 49,315 ￦ 5,767,992 18.57 1.00 Corporate banking 15,973 2,004,756 18.96 1.00 KB Securities Co., Ltd. 58,889 1,369,331 21.27 1.00 KB Capital Co., Ltd. 79,609 204,215 24.01 1.00 KB Savings Bank Co., Ltd. and Yehansoul Savings Bank Co., Ltd. 57,404 542,790 14.37 1.00 KB Securities Vietnam Joint Stock Company 13,533 35,525 22.09 1.00 KB Daehan Specialized Bank Plc. 1,601 20,186 23.23 1.00 PT Bank KB Bukopin Tbk 85,893 175,872 17.30 3.00 PRASAC Microfinance Institution Plc. 388,524 247,992 23.02 3.00 PT Sunindo Kookmin Best Finance 2,894 574 18.96 0.00 PT. KB Finansia Multi Finance 52,772 49,744 17.57 1.00 ￦ 806,407 ￦ 10,418,977 For impairment testing, goodwill is allocated to cash-generating units that are expected to benefit from the synergies of the business combination, and cash-generating units consist of an operating segment or units which are not larger than an operating segment. Cash-generating units to which goodwill has been allocated is tested for impairment annually and whenever there is an indication that the unit may be impaired, by comparing the carrying amount of the unit including the goodwill with the recoverable amount of the unit. The recoverable amount of a cash-generating unit is measured at the higher of its fair value less costs of disposal and its value in use. The fair value less costs of disposal is the amount obtainable from the disposal in an arm’s length transaction between knowledgeable, willing parties, after deducting the costs of disposal. If it is difficult to measure the amount obtainable from the disposal of the cash-generating unit, the disposal amount of a similar cash-generating unit in the past transaction is used by reflecting the characteristics of the cash-generating unit to be measured. If it is not possible to obtain reliable information to measure the fair value less costs of disposal, the Group uses the asset’s value in use as its recoverable amount. Value in use is the present value of the future cash flows expected to be derived from an asset or cash-generating unit. The estimated future cash flows are based on the most recent financial budget approved by management with maximum period of 5 years. In relation to subsequent cash flows, it is assumed that cash flows will grow at a certain permanent growth rate. The key assumptions used for the estimation of the future cash flows are based on the market size and the Group’s market share. The discount rate is a pre-tax 15.5 Details of intangible assets other than goodwill as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Industrial property rights ￦ 6,222 ￦ (2,936 ) ￦ (940 ) ￦ 2,346 Software 1,800,686 (1,225,173 ) (2,326 ) 573,187 Other intangible assets 690,665 (285,893 ) (32,998 ) 371,774 VOBA 2,395,291 (759,672 ) — 1,635,619 Right-of-use 35,139 (30,514 ) — 4,625 ￦ 4,928,003 ￦ (2,304,188 ) ￦ (36,264 ) ￦ 2,587,551 December 31, 2021 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Industrial property rights ￦ 3,056 ￦ (1,953 ) ￦ — ￦ 1,103 Software 1,996,646 (1,417,705 ) — 578,941 Other intangible assets 797,107 (365,473 ) (34,887 ) 396,747 VOBA 2,395,291 (915,746 ) — 1,479,545 Right-of-use 35,131 (31,517 ) — 3,614 ￦ 5,227,231 ￦ (2,732,394 ) ￦ (34,887 ) ￦ 2,459,950 15.6 Changes in intangible assets other than goodwill for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Acquisition & Disposal Amortization 1 Business combination Others Ending (In millions of Korean won) Industrial property rights ￦ 2,853 ￦ 116 ￦ (147 ) ￦ (476 ) ￦ — ￦ — ￦ 2,346 Software 373,519 340,045 (4,444 ) (153,876 ) 18,252 (309 ) 573,187 Other intangible assets 2 266,517 63,743 (9,527 ) (47,948 ) 106,445 (7,456 ) 371,774 VOBA 1,809,485 — — (173,866 ) — — 1,635,619 Right-of-use 9,698 — — (5,026 ) — (47 ) 4,625 ￦ 2,462,072 ￦ 403,904 ￦ (14,118 ) ￦ (381,192 ) ￦ 124,697 ￦ (7,812 ) ￦ 2,587,551 2021 Beginning Acquisition & Disposal Amortization 1 Business combination Others Ending (In millions of Korean won) Industrial property rights ￦ 2,346 ￦ 207 ￦ (1,080 ) ￦ (370 ) ￦ — ￦ — ￦ 1,103 Software 573,187 219,128 (838 ) (216,073 ) 8,742 (5,205 ) 578,941 Other intangible assets 2 371,774 100,460 (16,907 ) (59,761 ) — 1,181 396,747 VOBA 1,635,619 — — (156,074 ) — — 1,479,545 Right-of-use 4,625 — — (1,012 ) — 1 3,614 ￦ 2,587,551 ￦ 319,795 ￦ (18,825 ) ￦ (433,290 ) ￦ 8,742 ￦ (4,023 ) ￦ 2,459,950 1 Includes ￦ 173,992 million and ￦ 189,791 million recorded as insurance expenses and other operating expenses for the years ended December 31, 2020 and 2021, respectively. 2 Impairment losses for membership right with indefinite useful life among other intangible assets are recognized when its recoverable amount is lower than its carrying amount, and reversal of impairment losses are recognized when its recoverable amount is higher than its carrying amount. 15.7 Changes in accumulated impairment losses of other intangible assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of other intangible assets ￦ (31,652 ) ￦ (9,312 ) ￦ 3,669 ￦ 1,031 ￦ (36,264 ) 2021 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of other intangible assets ￦ (36,264 ) ￦ (5,306 ) ￦ 2,939 ￦ 3,744 ￦ (34,887 )

Lease

Lease	12 Months Ended
	Dec. 31, 2021
Presentation of leases for lessee [abstract]
Lease	16. Lease 16.1 The Group as a Lessee 16.1.1 Amounts recognized in the consolidated statements of financial position related to lease as of December 31, 2020 and 2021, are as follows: December 31, December 31, (In millions of Korean won) Right-of-use Real estate ￦ 537,392 ￦ 544,075 Vehicles 16,218 18,416 Others 17,101 13,556 570,711 576,047 Right-of-use 4,626 3,614 ￦ 575,337 ￦ 579,661 Lease liabilities* ￦ 559,113 ￦ 578,808 * Included in property and equipment, intangible assets, and other liabilities. 16.1.2 Amounts recognized in the consolidated statements of comprehensive income related to lease for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Depreciation and amortization of right-of-use Real estate ￦ 246,058 ￦ 262,240 Vehicles 15,286 17,796 Others 11,342 8,944 Intangible assets 5,026 1,012 ￦ 277,712 ￦ 289,992 Interest expenses on the lease liabilities ￦ 13,492 ￦ 14,678 Expense relating to short-term lease 6,169 5,920 Expense relating to lease of low-value 7,130 8,434 Expense relating to variable lease payments not included in lease liabilities (included in administrative expenses) 438 262 Total cash outflows for lease for the years ended December 31, 2020 and 2021 are ￦ 245,151 million and ￦ 267,864 million, respectively. 16.2 The Group as a Lessor 16.2.1 The Group as a finance lessor 16.2.1.1 Gross investment in the lease and present value of minimum lease payments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Gross Present Gross Present (In millions of Korean won) Up to 1 year ￦ 579,968 ￦ 354,588 ￦ 559,569 ￦ 379,439 1-5 958,125 551,777 808,256 540,219 ￦ 1,538,093 ￦ 906,365 ￦ 1,367,825 ￦ 919,658 16.2.1.2 Unearned finance income on finance lease as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Gross investment in the lease ￦ 1,538,093 ￦ 1,367,825 Net investment in the lease: Present value of minimum lease payments 906,365 919,658 Present value of unguaranteed residual value 496,969 349,478 1,403,334 1,269,136 Unearned finance income ￦ 134,759 ￦ 98,689 16.2.2 The Group as an operating lessor Future minimum lease payments to be received from the non-cancellable December 31, 2020 December 31, 2021 (In millions of Korean won) Minimum lease payments to be received: Up to 1 year ￦ 792,935 ￦ 918,640 1-5 1,727,498 1,797,551 Over 5 years 84,733 299,984 ￦ 2,605,166 ￦ 3,016,175

Deferred Income Tax Assets and

Deferred Income Tax Assets and Liabilities	12 Months Ended
	Dec. 31, 2021
Net deferred tax assets and liabilities [abstract]
Deferred Income Tax Assets and Liabilities	17. Deferred Income Tax Assets and Liabilities 17.1 Details of deferred income tax assets and liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 Assets Liabilities Net amount (In millions of Korean won) Other provisions ￦ 149,259 ￦ — ￦ 149,259 Allowances for credit losses 26,496 (3,356 ) 23,140 Impairment losses of property and equipment 3,992 (1,889 ) 2,103 Share-based payments 17,718 — 17,718 Provisions for acceptances and guarantees 17,046 — 17,046 Gains or losses on valuation of derivatives 20,645 (223,482 ) (202,837 ) Present value discount 17,058 (3,041 ) 14,017 Gains or losses on fair value hedge 21,060 — 21,060 Accrued interest — (125,835 ) (125,835 ) Deferred loan origination fees and costs 7,224 (226,821 ) (219,597 ) Advanced depreciation provision — (1,703 ) (1,703 ) Gains or losses on revaluation 338 (319,698 ) (319,360 ) Investments in subsidiaries and others 38,164 (111,589 ) (73,425 ) Gains or losses on valuation of security investment 73,857 (1,232,689 ) (1,158,832 ) Defined benefit liabilities 590,633 — 590,633 Accrued expenses 334,900 — 334,900 Retirement insurance expense — (541,317 ) (541,317 ) Adjustments to the prepaid contributions — (28,261 ) (28,261 ) Derivative-linked securities 78,202 (30,881 ) 47,321 Others 1,081,691 (740,462 ) 341,229 2,478,283 (3,591,024 ) (1,112,741 ) Offsetting of deferred income tax assets and liabilities (2,413,225 ) 2,413,225 — ￦ 65,058 ￦ (1,177,799 ) ￦ (1,112,741 ) December 31, 2021 Assets Liabilities Net amount (In millions of Korean won) Other provisions ￦ 178,027 ￦ — ￦ 178,027 Allowances for credit losses 28,770 (3,008 ) 25,762 Impairment losses of property and equipment 9,198 (1,833 ) 7,365 Share-based payments 24,249 — 24,249 Provisions for acceptances and guarantees 33,091 — 33,091 Gains or losses on valuation of derivatives 41,289 (139,281 ) (97,992 ) Present value discount 14,254 (5,929 ) 8,325 Gains or losses on fair value hedge — (14,642 ) (14,642 ) Accrued interest — (140,852 ) (140,852 ) Deferred loan origination fees and costs 10,473 (223,170 ) (212,697 ) Advanced depreciation provision — (1,703 ) (1,703 ) Gains or losses on revaluation — (318,539 ) (318,539 ) Investments in subsidiaries and others 42,547 (159,411 ) (116,864 ) Gains or losses on valuation of security investment 104,168 (1,192,004 ) (1,087,836 ) Defined benefit liabilities 608,471 — 608,471 Accrued expenses 281,983 — 281,983 Retirement insurance expense — (573,895 ) (573,895 ) Adjustments to the prepaid contributions — (29,273 ) (29,273 ) Derivative-linked securities 2,241 (46,895 ) (44,654 ) Others* 1,031,411 (871,625 ) 159,786 2,410,172 (3,722,060 ) (1,311,888 ) Offsetting of deferred income tax assets and liabilities (2,251,079 ) 2,251,079 — ￦ 159,093 ￦ (1,470,981 ) ￦ (1,311,888 ) * Includes Purchase Price Allocation (“PPA”) amount arising from the acquisition of Prudential Life Insurance Company of Korea Ltd., KB Insurance Co., Ltd., and others. 17.2 Unrecognized Deferred Income Tax Assets 17.2.1 No deferred income tax assets have been recognized for the deductible temporary differences of ￦ 372,410 million associated with investments in subsidiaries and others as of December 31, 2021, because it is not probable that these temporary differences will reverse in the foreseeable future. 17.2.2 No deferred income tax assets have been recognized for the deductible temporary differences of ￦ 107,067 million associated with others as of December 31, 2021, due to the uncertainty that these temporary differences will be realized in the future. 17.3 Unrecognized Deferred Income Tax Liabilities 17.3.1 No deferred income tax liabilities have been recognized for the taxable temporary differences of ￦ 404,147 million associated with investments in subsidiaries and others as of December 31, 2021, due to the following reasons: • The Group is able to control the timing of the reversal of the temporary differences. • It is probable that these temporary differences will not reverse in the foreseeable future. 17.3.2 No deferred income tax liabilities have been recognized as of December 31, 2021, for the taxable temporary differences of ￦ 65,288 million related to the initial recognition of goodwill arising from the merger of Housing and Commercial Bank in 2001. 17.4 Changes in cumulative temporary differences for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Business combination Decrease Increase Ending (In millions of Korean won) Deductible temporary differences Gains or losses on fair value hedge ￦ 44,085 ￦ — ￦ 44,085 ￦ 76,583 ￦ 76,583 Other provisions 424,383 6,383 426,457 540,396 544,705 Allowances for credit losses 2,018 105,505 96,885 83,111 93,749 Impairment losses of property and equipment 15,985 — 9,658 8,189 14,516 Deferred loan origination fees and costs 1,930 35,863 15,098 3,574 26,269 Share-based payments 63,092 5 55,601 54,589 62,085 Provisions for acceptances and guarantees 76,214 — 76,214 61,984 61,984 Gains or losses on valuation of derivatives 186,035 5,201 191,236 76,238 76,238 Present value discount 29,978 — 29,732 61,783 62,029 Investments in subsidiaries and others 185,380 — 47,034 232,655 371,001 Gains or losses on valuation of security investment 136,236 — 136,070 251,524 251,690 Defined benefit liabilities 2,118,942 94,105 227,010 313,122 2,299,159 Accrued expenses 911,599 75,498 911,599 1,144,785 1,220,283 Derivative-linked securities 477,307 — 477,307 284,370 284,370 Others* 1,669,025 2,068,207 1,170,462 1,081,994 3,648,764 6,342,209 2,390,767 3,914,448 4,274,897 9,093,425 Unrecognized deferred income tax assets Other provisions 4,788 3,054 Investments in subsidiaries and others 67,645 242,875 Others 125,158 75,831 6,144,618 8,771,665 Tax rate (%) 27.5 27.5 Total deferred income tax assets ￦ 1,703,764 ￦ 2,478,283 Taxable temporary differences Accrued interest ￦ (401,337 ) ￦ (168,859 ) ￦ (394,255 ) ￦ (281,685 ) ￦ (457,626 ) Allowances for credit losses (11,877 ) — (11,877 ) (12,203 ) (12,203 ) Impairment losses of property and equipment (4,163 ) — (111 ) 117 (3,935 ) Deferred loan origination fees and costs (752,178 ) — (752,178 ) (820,223 ) (820,223 ) Advanced depreciation provision (6,192 ) — — — (6,192 ) Gains or losses on valuation of derivatives (576,743 ) — (576,743 ) (812,662 ) (812,662 ) Present value discount (15,278 ) — (15,278 ) (10,916 ) (10,916 ) Goodwill arising from the merger (65,288 ) — — — (65,288 ) Gains or losses on revaluation (1,197,566 ) — (80,036 ) (45,008 ) (1,162,538 ) Investments in subsidiaries and others (419,055 ) — (70,188 ) (297,809 ) (646,676 ) Gains or losses on valuation of security investment (906,790 ) (3,060,750 ) (899,660 ) (1,358,042 ) (4,425,922 ) Retirement insurance expense (1,775,740 ) (61,789 ) (162,764 ) (288,296 ) (1,963,061 ) Adjustments to the prepaid contributions (83,262 ) — (83,262 ) (102,768 ) (102,768 ) Derivative-linked securities (125,947 ) — (125,947 ) (112,293 ) (112,293 ) Others* (2,793,848 ) (1,613 ) (1,644,815 ) (1,555,740 ) (2,706,386 ) (9,135,264 ) (3,293,011 ) (4,817,114 ) (5,697,528 ) (13,308,689 ) Unrecognized deferred income tax liabilities Goodwill arising from the merger (65,288 ) (65,288 ) Investments in subsidiaries and others (68,836 ) (260,739 ) Others (1,247 ) (1,042 ) (8,999,893 ) (12,981,620 ) Tax rate (%) 27.5 27.5 Total deferred income tax liabilities ￦ (2,489,587 ) ￦ (3,591,024 ) 2021 Beginning Decrease Increase Ending (In millions of Korean won) Deductible temporary differences Gains or losses on fair value hedge ￦ 76,583 ￦ 76,583 ￦ — ￦ — Other provisions 544,705 527,058 631,800 649,447 Allowances for credit losses 93,749 69,023 75,452 100,178 Impairment losses of property and equipment 14,516 4,361 23,290 33,445 Deferred loan origination fees and costs 26,269 13,719 25,536 38,086 Share-based payments 62,085 55,002 78,225 85,308 Provisions for acceptances and guarantees 61,984 61,984 120,332 120,332 Gains or losses on valuation of derivatives 76,238 76,238 149,817 149,817 Present value discount 62,029 61,783 51,586 51,832 Investments in subsidiaries and others 371,001 203,470 346,809 514,340 Gains or losses on valuation of security investment 251,690 252,497 368,886 368,079 Defined benefit liabilities 2,299,159 315,719 393,189 2,376,629 Accrued expenses 1,220,283 1,220,283 1,026,651 1,026,651 Derivative-linked securities 284,370 284,370 8,147 8,147 Others* 3,648,764 554,628 100,539 3,194,675 9,093,425 3,776,718 3,400,259 8,716,966 Unrecognized deferred income tax assets Other provisions 3,054 404 Investments in subsidiaries and others 242,875 372,410 Others 75,831 107,067 8,771,665 8,237,085 Tax rate (%) 27.5 27.5 Total deferred income tax assets ￦ 2,478,283 ￦ 2,410,172 Taxable temporary differences Gains or losses on fair value hedge ￦ — ￦ — ￦ (53,243 ) ￦ (53,243 ) Accrued interest (457,626 ) (442,101 ) (496,663 ) (512,188 ) Allowances for credit losses (12,203 ) (12,203 ) (10,939 ) (10,939 ) Impairment losses of property and equipment (3,935 ) (204 ) — (3,731 ) Deferred loan origination fees and costs (820,223 ) (820,223 ) (802,237 ) (802,237 ) Advanced depreciation provision (6,192 ) — — (6,192 ) Gains or losses on valuation of derivatives (812,662 ) (804,383 ) (498,197 ) (506,476 ) Present value discount (10,916 ) (10,916 ) (21,469 ) (21,469 ) Goodwill arising from the merger (65,288 ) — — (65,288 ) Gains or losses on revaluation (1,162,538 ) (48,981 ) (44,765 ) (1,158,322 ) Investments in subsidiaries and others (646,676 ) (150,480 ) (468,334 ) (964,530 ) Gains or losses on valuation of security investment (4,425,922 ) (2,552,447 ) (2,394,100 ) (4,267,575 ) Retirement insurance expense (1,963,061 ) (228,784 ) (346,368 ) (2,080,645 ) Adjustments to the prepaid contributions (102,768 ) (102,768 ) (106,446 ) (106,446 ) Derivative-linked securities (112,293 ) (112,293 ) (170,526 ) (170,526 ) Others* (2,706,386 ) (1,819,652 ) (2,208,579 ) (3,095,313 ) (13,308,689 ) (7,105,435 ) (7,621,866 ) (13,825,120 ) Unrecognized deferred income tax liabilities Goodwill arising from the merger (65,288 ) (65,288 ) Investments in subsidiaries and others (260,739 ) (404,147 ) Others (1,042 ) (446 ) (12,981,620 ) (13,355,239 ) Tax rate (%) 27.5 27.5 Total deferred income tax liabilities ￦ (3,591,024 ) ￦ (3,722,060 ) * Includes PPA amount arising from the acquisition of Prudential Life Insurance Company of Korea Ltd., KB Insurance Co., Ltd., and others.

Assets Held for Sale and Assets

Assets Held for Sale and Assets of a Disposal Group Held for Sale	12 Months Ended
	Dec. 31, 2021
Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract]
Assets Held for Sale and Assets of a Disposal Group Held for Sale	18. Assets Held for Sale and Assets of a Disposal Group Held for Sale 18.1 Assets Held for Sale 18.1.1 Details of assets held for sale as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition Accumulated Carrying Fair value less (In millions of Korean won) Land held for sale ￦ 80,740 ￦ (16,169 ) ￦ 64,571 ￦ 68,321 Buildings held for sale 152,426 (24,887 ) 127,539 134,247 Other assets held for sale 10,676 (5,059 ) 5,617 5,801 ￦ 243,842 ￦ (46,115 ) ￦ 197,727 ￦ 208,369 December 31, 2021 Acquisition Accumulated Carrying Fair value less (In millions of Korean won) Land held for sale ￦ 115,099 ￦ (16,528 ) ￦ 98,571 ￦ 135,192 Buildings held for sale 170,892 (36,923 ) 133,969 149,569 Other assets held for sale 10,142 (5,364 ) 4,778 4,778 ￦ 296,133 ￦ (58,815 ) ￦ 237,318 ￦ 289,539 * Acquisition cost of buildings held for sale is net of accumulated depreciation amount immediately before the initial classification of the assets as held for sale. 18.1.2 Valuation techniques and inputs used to measure the fair value of assets held for sale as of December 31, 2021 are as follows: December 31, 2021 Fair value Valuation 1 Unobservable 2 Estimated range of Effect of (In millions of Korean won) Land and buildings ￦ 289,539 Market comparison Adjustment index 0.68 ~ 1.95 Fair value increases 1 The appraisal value is adjusted by the adjustment ratio in the event the public sale is unsuccessful. 2 Adjustment index is calculated using the time factor correction or local factors or individual factors. Among assets held for sale, real estate was measured by independent appraisers with professional qualifications and recent experience in evaluating similar properties in the area of the property to be assessed. All assets held for sale are classified as Level 3 in accordance with fair value hierarchy in Note 6.1.2. 18.1.3 Changes in accumulated impairment losses of assets held for sale for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Provision Reversal Business Others Ending (In millions of Korean won) Accumulated impairment losses of assets held for sale ￦ (2,782 ) ￦ (11,593 ) ￦ — ￦ (45,433 ) ￦ 13,693 ￦ (46,115 ) 2021 Beginning Provision Reversal Others Ending (In millions of Korean won) Accumulated impairment losses of assets held for sale ￦ (46,115 ) ￦ (15,490 ) ￦ — ￦ 2,790 ￦ (58,815 ) 18.1.4 As of December 31, 2021, assets held for sale consist of 16 real estates of closed offices and 861 foreclosure assets on loans of PT Bank KB Bukopin Tbk, which were determined to sell by management, but not yet sold as of December 31, 2021. Negotiation with buyers is in process for the one closed office and the remaining 876 assets are also being actively marketed. 18.2 Assets of a Disposal Group Held for Sale The Group decided to sell all of its shares in 498 Seventh KOR Holdco LP held by Hanwha US Equity Strategy Private Real Estate Fund No.3, which is a subsidiary and 498 Seventh KOR LLC held by 498 Seventh KOR Holdco LP. The Group classified assets of 498 Seventh KOR Holdco LP and 498 Seventh KOR LLC as assets of a disposal group held for sale, and classified currency translation differences as accumulated other comprehensive income relating to assets of a disposal group held for sale and has entered into a share transfer contract with JR REIT No.28 and is in the process of selling it accordingly as of December 31, 2021. 18.2.1 There is no liabilities of a disposal group held for sale and details of assets of a disposal group held for sale as of December 31, 2021 are as follows: December 31, 2021 498 seventh Holdco LP 498 seventh KOR LLC Total (In millions of Korean won) Cash ￦ 556 ￦ 512 ￦ 1,068 Investments in associates — 169,424 169,424 Other assets — 1,257 1,257 ￦ 556 ￦ 171,193 ￦ 171,749 Assets of a disposal group held for sale are measured at the lower of its carrying amount and fair value less costs to sell. There is no impairment loss recognized as the fair value less costs to sell exceeds the carrying amount as of December 31, 2021. 18.2.2 Details of accumulated other comprehensive income relating to assets of a disposal group held for sale as of December 31, 2021 are as follows: December 31, 2021 (In millions of Korean won) Currency translation differences ￦ 7,671

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2021
Miscellaneous assets [abstract]
Other Assets	19. Other Assets 19.1 Details of other assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Other financial assets Other receivables ￦ 10,628,272 ￦ 6,732,917 Accrued income 1,726,651 1,916,667 Guarantee deposits 1,099,618 1,035,522 Domestic exchange settlement debits 722,616 1,014,938 Others 117,330 204,940 Less: Allowances for credit losses (119,762 ) (143,205 ) Less: Present value discount (7,036 ) (6,429 ) 14,167,689 10,755,350 Other non-financial Other receivables 1,091 1,764 Prepaid expenses 254,152 254,990 Guarantee deposits 3,906 7,268 Insurance assets 2,376,679 2,924,698 Separate account assets 10,210,047 10,556,935 Others 3,158,993 3,689,340 Less: Allowances for credit losses (17,520 ) (16,172 ) 15,987,348 17,418,823 ￦ 30,155,037 ￦ 28,174,173 19.2 Changes in allowances for credit losses of other assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Other financial Other non-financial Total (In millions of Korean won) Beginning ￦ 104,629 ￦ 24,235 ￦ 128,864 Write-offs (6,517 ) (8,503 ) (15,020 ) Provision 22,153 1,726 23,879 Business combination 7,946 59 8,005 Others (8,449 ) 3 (8,446 ) Ending ￦ 119,762 ￦ 17,520 ￦ 137,282 2021 Other financial Other non-financial Total (In millions of Korean won) Beginning ￦ 119,762 ￦ 17,520 ￦ 137,282 Write-offs (3,504 ) (380 ) (3,884 ) Provision (reversal) 25,387 (447 ) 24,940 Business combination 227 — 227 Others 1,333 (521 ) 812 Ending ￦ 143,205 ￦ 16,172 ￦ 159,377

Financial Liabilities at Fair V

Financial Liabilities at Fair Value through Profit or Loss	12 Months Ended
	Dec. 31, 2021
Financial liabilities at fair value through profit or loss [abstract]
Financial Liabilities at Fair Value through Profit or Loss	20. Financial Liabilities at Fair Value through Profit or Loss 20.1 Details of financial liabilities at fair value through profit or loss and financial liabilities designated at fair value through profit or loss as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial liabilities at fair value through profit or loss Borrowed securities sold ￦ 1,934,735 ￦ 2,826,885 Others 91,216 112,699 2,025,951 2,939,584 Financial liabilities designated at fair value through profit or loss Derivative-linked securities 9,784,107 9,149,396 9,784,107 9,149,396 ￦ 11,810,058 ￦ 12,088,980 20.2 Difference between the amount contractually required to pay at maturity and carrying amount of financial liabilities designated at fair value through profit or loss as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Amount contractually required to pay at maturity ￦ 9,583,186 ￦ 8,957,602 Carrying amount 9,784,107 9,149,396 Difference ￦ (200,921 ) ￦ (191,794 )

Deposits

Deposits	12 Months Ended
	Dec. 31, 2021
Deposits from customers [abstract]
Deposits	21. Deposits Details of deposits as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Demand deposits Demand deposits in Korean won ￦ 162,155,728 ￦ 180,560,022 Demand deposits in foreign currencies 14,473,832 15,955,246 176,629,560 196,515,268 Time deposits Time deposits in Korean won 149,435,968 155,799,563 149,435,968 155,799,563 Time deposits in foreign currencies 10,043,679 15,594,718 Fair value adjustments of fair value hedged time deposits in foreign currencies 2,089 (1,319 ) 10,045,768 15,593,399 159,481,736 171,392,962 Certificates of deposits 2,468,924 4,115,688 ￦ 338,580,220 ￦ 372,023,918

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about borrowings [abstract]
Borrowings	22. Borrowings 22.1 Details of borrowings as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) General borrowings ￦ 32,312,859 ￦ 40,859,845 Bonds sold under repurchase agreements and others 16,334,365 14,374,863 Call money 1,179,932 1,677,666 ￦ 49,827,156 ￦ 56,912,374 22.2 Details of general borrowings as of December 31, 2020 and 2021, are as follows: Lenders Interest rate December 31, 2020 December 31, 2021 (In millions of Korean won) Borrowings in Korean won Borrowings from the Bank of Korea The Bank of Korea 0.25 ￦ 6,463,267 ￦ 7,131,019 Borrowings from the government SEMAS and others 0.00 ~ 2.70 2,675,568 2,683,056 Borrowings from banks Shinhan Bank and others 1.70 ~ 5.30 137,952 171,482 Borrowings from non-banking Korea Securities Finance Corporation and others 0.20 ~ 4.74 2,203,702 1,935,906 Other borrowings The Korea Development Bank and others 0.00 ~ 4.90 9,717,382 13,292,759 21,197,871 25,214,222 Borrowings in foreign currencies Due to banks Hana Bank and others — 292 2,143 Borrowings from banks Central Bank of Uzbekistan and others 0.00 ~ 13.50 9,839,110 13,396,379 Borrowings from other financial institutions The Export-Import Bank of Korea and others 0.60 ~ 1.36 23,827 24,867 Other borrowings Bank of New York Mellon and others 0.00 ~ 2.80 1,251,759 2,222,234 11,114,988 15,645,623 ￦ 32,312,859 ￦ 40,859,845 22.3 Details of bonds sold under repurchase agreements and others as of December 31, 2020 and 2021, are as follows: Lenders Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Bonds sold under repurchase agreements Individuals, groups, and corporations 0.00~9.75 ￦ 16,329,799 ￦ 14,372,761 Bills sold Counter sale 0.20~2.00 4,566 2,102 ￦ 16,334,365 ￦ 14,374,863 22.4 Details of call money as of December 31, 2020 and 2021, are as follows: Lenders Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Call money in Korean won The Export-Import Bank of Korea and others 1.52 ￦ 510,000 ￦ 40,000 Call money in foreign currencies Bank Mandiri and others 0.00~4.25 669,932 1,637,666 ￦ 1,179,932 ￦ 1,677,666

Debentures

Debentures	12 Months Ended
	Dec. 31, 2021
Disclosure Of Detailed Information About Debentures [Abstract]
Debentures	23. Debentures 23.1 Details of debentures as of December 31, 2020 and 2021, are as follows: Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Debentures in Korean won Structured debentures 5.65 ~ 8.62 ￦ 1,960 ￦ 910 Exchangeable bonds* 0.00 240,000 240,000 Subordinated fixed rate debentures 2.02 ~ 7.86 4,834,407 6,241,957 Fixed rate debentures 0.80 ~ 13.70 47,229,619 44,124,235 Floating rate debentures 1.24 ~ 2.57 3,190,000 6,893,782 55,495,986 57,500,884 Fair value adjustments of fair value hedged debentures in Korean won (6,839 ) (79,877 ) Less: Discount on debentures in Korean won (32,028 ) (38,976 ) Less: Adjustment for exchange right of exchangeable bonds in Korean won (14,957 ) (11,719 ) 55,442,162 57,370,312 Debentures in foreign currencies Floating rate debentures 0.37 ~ 1.46 2,232,938 2,749,174 Fixed rate debentures 0.05 ~ 12.00 5,030,580 7,312,966 7,263,518 10,062,140 Fair value adjustments of fair value hedged debentures in foreign currencies 81,333 27,953 Less: Discount on debentures in foreign currencies (26,326 ) (30,217 ) 7,318,525 10,059,876 ￦ 62,760,687 ￦ 67,430,188 * Fair value of the liability component of exchangeable bonds is calculated by using market interest rate of bonds under the same conditions without the exchange right. The residual amount after deducting the liability component from the issuance amount, represents the value of the exchange right and is recorded in equity. Shares to be exchanged are 5 million treasury shares of KB Financial Group Inc. with the exchange price of ￦ 48,000. Exercise period for exchange right is from the 60th day of the issuance date to 10 days before the maturity date. 23.2 Changes in debentures based on par value for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Issue Repayment Business Others Ending (In millions of Korean won) Debentures in Korean won Structured debentures ￦ 33,310 ￦ — ￦ (1,350 ) ￦ — ￦ (30,000 ) ￦ 1,960 Exchangeable bonds — 240,000 — — — 240,000 Subordinated fixed rate debentures 3,386,590 2,150,000 (702,183 ) — — 4,834,407 Fixed rate debentures 40,596,755 111,677,084 (105,044,220 ) — — 47,229,619 Floating rate debentures 1,580,000 2,010,000 (400,000 ) — — 3,190,000 45,596,655 116,077,084 (106,147,753 ) — (30,000 ) 55,495,986 Debentures in foreign currencies Floating rate debentures 2,227,607 823,478 (675,075 ) — (143,072 ) 2,232,938 Fixed rate debentures 3,094,196 2,909,967 (937,972 ) 277,087 (312,698 ) 5,030,580 5,321,803 3,733,445 (1,613,047 ) 277,087 (455,770 ) 7,263,518 ￦ 50,918,458 ￦ 119,810,529 ￦ (107,760,800 ) ￦ 277,087 ￦ (485,770 ) ￦ 62,759,504 2021 Beginning Issue Repayment Others Ending (In millions of Korean won) Debentures in Korean won Structured debentures ￦ 1,960 ￦ — ￦ (1,050 ) ￦ — ￦ 910 Exchangeable bonds 240,000 — — — 240,000 Subordinated fixed rate debentures 4,834,407 1,409,000 (1,450 ) — 6,241,957 Fixed rate debentures 47,229,619 110,295,448 (113,400,832 ) — 44,124,235 Floating rate debentures 3,190,000 6,085,064 (2,381,282 ) — 6,893,782 55,495,986 117,789,512 (115,784,614 ) — 57,500,884 Debentures in foreign currencies Floating rate debentures 2,232,938 810,920 (500,901 ) 206,217 2,749,174 Fixed rate debentures 5,030,580 3,195,539 (1,224,070 ) 310,917 7,312,966 7,263,518 4,006,459 (1,724,971 ) 517,134 10,062,140 ￦ 62,759,504 ￦ 121,795,971 ￦ (117,509,585 ) ￦ 517,134 ￦ 67,563,024

Provisions

Provisions	12 Months Ended
	Dec. 31, 2021
Additional provisions, other provisions [abstract]
Provisions	24. Provisions 24.1 Details of provisions as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Provisions for credit losses of unused loan commitments ￦ 298,753 ￦ 308,640 Provisions for credit losses of acceptances and guarantees 62,254 121,104 Provisions for credit losses of financial guarantee contracts 6,348 5,351 Provisions for restoration costs 151,696 152,186 Others * 195,852 221,323 ￦ 714,903 ￦ 808,604 * Includes provisions for redemption-suspended funds. 24.2 Changes in provisions for credit losses of unused loan commitments, and acceptances and guarantees for the years ended December 31, 2020 and 2021, are as follows: 2020 Provisions for credit losses of unused loan commitments Provisions for credit losses of acceptances and guarantees 12-month Lifetime expected 12-month Lifetime expected Non- impaired Impaired Non- impaired Impaired (In millions of Korean won) Beginning ￦ 127,297 ￦ 71,464 ￦ 9,387 ￦ 24,961 ￦ 36,012 ￦ 16,786 Transfer between stages: Transfer to 12-month 23,318 (21,694 ) (1,624 ) 194 (191 ) (3 ) Transfer to lifetime expected credit losses (13,431 ) 15,991 (2,560 ) (486 ) 486 — Impairment (304 ) (3,474 ) 3,778 (5 ) (461 ) 466 Provision (reversal) for credit losses 24,583 65,449 (412 ) 9,482 (20,389 ) (2,734 ) Business combination 19,426 — — — — — Others (exchange differences, etc.) (18,168 ) (273 ) — (1,058 ) (619 ) (187 ) Ending* ￦ 162,721 ￦ 127,463 ￦ 8,569 ￦ 33,088 ￦ 14,838 ￦ 14,328 2021 Provisions for credit losses of unused loan commitments Provisions for credit losses of acceptances and guarantees 12-month Lifetime expected 12-month Lifetime expected Non- impaired Impaired Non- impaired Impaired (In millions of Korean won) Beginning ￦ 162,721 ￦ 127,463 ￦ 8,569 ￦ 33,088 ￦ 14,838 ￦ 14,328 Transfer between stages: Transfer to 12-month 38,831 (37,595 ) (1,236 ) 3,958 (203 ) (3,755 ) Transfer to lifetime expected credit losses (27,308 ) 28,203 (895 ) (3,973 ) 3,982 (9 ) Impairment (457 ) (1,002 ) 1,459 (10 ) (85 ) 95 Provision (reversal) for credit losses (22,543 ) 29,145 127 (7,425 ) 64,178 711 Business combination 813 — — — — — Others (exchange differences, etc.) 1,940 405 — 1,759 (540 ) 167 Ending* ￦ 153,997 ￦ 146,619 ￦ 8,024 ￦ 27,397 ￦ 82,170 ￦ 11,537 * Includes additional provisions of ￦ 14,974 million and ￦ 15,664 million for industries and borrowers which are highly affected by COVID-19 (non-impaired) 24.3 Changes in provisions for credit losses of financial guarantee contracts for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Beginning ￦ 6,063 ￦ 6,348 Provision (reversal) 280 (830 ) Others 5 (167 ) Ending ￦ 6,348 ￦ 5,351 24.4 Changes in provisions for restoration costs for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Beginning ￦ 120,340 ￦ 151,696 Provision 14,192 11,350 Reversal (2,010 ) (2,075 ) Used (9,469 ) (15,739 ) Unwinding of discount 2,372 1,589 Effect of changes in discount rate 23,886 5,365 Business combination 2,385 — Ending ￦ 151,696 ￦ 152,186 Provisions for restoration costs are the present value of estimated costs to be incurred for the restoration of the leased properties. The expenditure of the restoration cost will be incurred at the end of each lease contract, and the lease period is used to reasonably estimate the time of expenditure. Also, the average restoration expense based on actual three-year historical data and three-year historical average inflation rate are used to estimate the present value of estimated costs. 24.5 Changes in other provisions for the years ended December 31, 2020 and 2021, are as follows: 2020 Membership Dormant Litigations Others Total (In millions of Korean won) Beginning ￦ 14,669 ￦ 3,579 ￦ 28,690 ￦ 68,681 ￦ 115,619 Increase 76,138 2,607 19,186 89,361 187,292 Decrease (71,306 ) (3,179 ) (9,725 ) (28,173 ) (112,383 ) Business combination — — 2,366 2,958 5,324 Ending ￦ 19,501 ￦ 3,007 ￦ 40,517 ￦ 132,827 ￦ 195,852 2021 Membership Dormant Litigations Others Total (In millions of Korean won) Beginning ￦ 19,501 ￦ 3,007 ￦ 40,517 ￦ 132,827 ￦ 195,852 Increase 77,384 3,429 18,670 71,972 171,455 Decrease (73,983 ) (3,374 ) (4,190 ) (64,614 ) (146,161 ) Others — — 171 6 177 Ending ￦ 22,902 ￦ 3,062 ￦ 55,168 ￦ 140,191 ￦ 221,323

Net Defined Benefit Liabilities

Net Defined Benefit Liabilities	12 Months Ended
	Dec. 31, 2021
Disclosure of defined benefit plans [abstract]
Net Defined Benefit Liabilities	25. Net Defined Benefit Liabilities 25.1 Defined Benefit Plan The Group operates defined benefit plans which have the following characteristics: • The Group has the obligation to pay the agreed benefits to all its current and former employees. • The Group assumes actuarial risk (that benefits will cost more than expected) and investment risk. The net defined benefit liabilities recognized in the consolidated statement of financial position are calculated by the independent actuary in accordance with actuarial valuation method. The defined benefit obligation is calculated using the projected unit credit method. Assumptions based on market data and historical data such as discount rate, future salary increase rate, mortality, and consumer price index are used which are updated annually. Actuarial assumptions may differ from actual results, due to changes in the market conditions, economic trends, and mortality trends which may affect net defined benefit liabilities and future payments. Actuarial gains and losses arising from changes in actuarial assumptions are recognized in the period incurred through other comprehensive income. 25.2 Changes in net defined benefit liabilities for the years ended December 31, 2020 and 2021, are as follows: 2020 Present value of Fair value of plan Net defined benefit (In millions of Korean won) Beginning ￦ 2,299,476 ￦ (2,088,710 ) ￦ 210,766 Current service cost 233,273 — 233,273 Past service cost (16,197 ) — (16,197 ) Gains on settlement (1,912 ) — (1,912 ) Interest expense (income) 46,178 (41,435 ) 4,743 Remeasurements: Actuarial gains and losses by changes in demographic assumptions (9,611 ) — (9,611 ) Actuarial gains and losses by changes in financial assumptions 4,995 — 4,995 Actuarial gains and losses by experience adjustments 16,292 — 16,292 Return on plan assets (excluding amounts included in interest income) — 6,308 6,308 Contributions by the Group — (268,918 ) (268,918 ) Contributions by the employees — (248 ) (248 ) Payments from plans (settlement) (8,162 ) 8,162 — Payments from plans (benefit payments) (148,468 ) 144,546 (3,922 ) Payments from the Group (34,361 ) — (34,361 ) Transfer in 9,673 (9,027 ) 646 Transfer out (8,635 ) 8,635 — Effect of exchange differences (724 ) 5 (719 ) Effect of business acquisition and disposal 110,080 (62,271 ) 47,809 Others 26 — 26 Ending* ￦ 2,491,923 ￦ (2,302,953 ) ￦ 188,970 2021 Present value of Fair value of plan Net defined benefit (In millions of Korean won) Beginning ￦ 2,491,923 ￦ (2,302,953 ) ￦ 188,970 Current service cost 241,448 — 241,448 Past service cost 451 — 451 Gains on settlement (4,311 ) — (4,311 ) Interest expense (income) 47,481 (44,560 ) 2,921 Remeasurements: Actuarial gains and losses by changes in demographic assumptions 27,611 — 27,611 Actuarial gains and losses by changes in financial assumptions 52,684 — 52,684 Actuarial gains and losses by experience adjustments (24,592 ) — (24,592 ) Return on plan assets (excluding amounts included in interest income) — 9,438 9,438 Contributions by the Group — (319,601 ) (319,601 ) Contributions by the employees — (17,574 ) (17,574 ) Payments from plans (settlement) (6,961 ) 6,944 (17 ) Payments from plans (benefit payments) (221,276 ) 221,274 (2 ) Payments from the Group (34,242 ) — (34,242 ) Transfer in 9,854 (9,292 ) 562 Transfer out (9,292 ) 9,292 — Effect of exchange differences 1,670 (47 ) 1,623 Effect of business acquisition and disposal 21 — 21 Others 48 — 48 Ending* ￦ 2,572,517 ￦ (2,447,079 ) ￦ 125,438 * The net defined benefit liabilities of ￦ 188,970 million is calculated by subtracting ￦ 50,597 million of net defined benefit assets from ￦ 239,567 million of net defined benefit liabilities as of December 31, 2020. The net defined benefit liabilities of ￦ 125,438 million is calculated by subtracting ￦ 100,083 million of net defined benefit assets from ￦ 225,521 million of net defined benefit liabilities as of December 31, 2021. 25.3 Details of net defined benefit liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Present value of defined benefit obligation ￦ 2,491,923 ￦ 2,572,517 Fair value of plan assets (2,302,953 ) (2,447,079 ) Net defined benefit liabilities ￦ 188,970 ￦ 125,438 25.4 Details of post-employment benefits recognized in profit or loss for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Current service cost ￦ 227,576 ￦ 233,273 ￦ 241,448 Past service cost 2,276 (16,197 ) 451 Net interest expense on net defined benefit liabilities 5,545 4,743 2,921 Gains on settlement — (1,912 ) (4,311 ) Post-employment benefits * ￦ 235,397 ￦ 219,907 ￦ 240,509 * Includes post-employment benefits amounting to ￦ 2,575 million and￦ 2,840 million recognized as other operating expenses and ￦ 121 million and ￦ 176 million recognized as prepayment for the years ended December 31, 2019 and 2020, and post-employment benefits amounting to ￦ 3,194 million recognized as other operating expenses for the year ended December 31, 2021. 25.5 Details of remeasurements of net defined benefit liabilities recognized in other comprehensive income (loss) for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Remeasurements: Return on plan assets (excluding amounts included in interest income) ￦ (11,116 ) ￦ (6,308 ) ￦ (9,438 ) Actuarial gains and losses (64,083 ) (11,676 ) (55,703 ) Income tax effect 20,676 4,949 18,638 Effect of exchange differences — (399 ) 993 Remeasurements after income tax expense ￦ (54,523 ) ￦ (13,434 ) ￦ (45,510 ) 25.6 Details of fair value of plan assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 Assets quoted Assets not Total (In millions of Korean won) Cash and due from financial institutions ￦ — ￦ 2,299,500 ￦ 2,299,500 Derivative instruments — 1,930 1,930 Investment fund — 1,523 1,523 ￦ — ￦ 2,302,953 ￦ 2,302,953 December 31, 2021 Assets quoted Assets not Total (In millions of Korean won) Cash and due from financial institutions ￦ — ￦ 2,441,324 ￦ 2,441,324 Derivative instruments — 3,427 3,427 Investment fund — 2,328 2,328 ￦ — ￦ 2,447,079 ￦ 2,447,079 25.7 Details of significant actuarial assumptions used as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Discount rate (%) 0.90~2.00 1.80~2.70 Salary increase rate (%) 0.00~7.50 0.00~7.50 Turnover rate (%) 0.00~50.00 0.00~50.00 Mortality assumptions are based on the experience-based mortality table issued by Korea Insurance Development Institute in 2019. 25.8 Results of sensitivity analysis of significant actuarial assumptions as of December 31, 2021, are as follows: Changes in Effect on defined benefit obligation Increase in assumptions Decrease in assumptions Discount rate 0 %p 4.24% decrease 4.56% increase Salary increase rate 0 %p 4.27% increase 4.02% decrease Turnover rate 0 %p 0.37% decrease 0.38% increase The above sensitivity analysis is based on a change in an assumption while holding all other assumptions constant. In practice, this is unlikely to occur, and changes in some of the assumptions may be correlated. The sensitivity of the defined benefit obligation to changes in significant actuarial assumptions is calculated using the same projected unit credit method used in calculating the defined benefit obligation recognized in the consolidated statement of financial position. 25.9 Expected maturity analysis of undiscounted pension benefit payments (including expected future benefit) as of December 31, 2021, are as follows: Up to 1 year 1~2 years 2~5 years 5~10 years Over 10 years Total (In millions of Korean won) Pension benefits * ￦ 89,554 ￦ 177,777 ￦ 709,744 ￦ 1,466,517 ￦ 5,258,052 ￦ 7,701,644 * Amount determined under the promotion compensation type defined contribution plan is excluded. The weighted average duration of the defined benefit obligation is 1 ~ 11 years . 25.10 Reasonable estimation of expected contribution to plan assets for the next annual reporting period after December 31, 2021 is 224,658 million.

Other Liabilities

Other Liabilities	12 Months Ended
	Dec. 31, 2021
Miscellaneous liabilities [abstract]
Other Liabilities	26. Other Liabilities Details of other liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Other financial liabilities Other payables ￦ 14,247,067 ￦ 11,175,682 Prepaid card and debit card payables 31,184 33,972 Accrued expenses 2,787,360 2,620,819 Financial guarantee contracts liabilities 49,286 52,603 Deposits for letter of guarantees and others 1,103,876 1,093,680 Domestic exchange settlement credits 938,039 5,125,430 Foreign exchange settlement credits 134,678 169,264 Due to trust accounts 7,542,955 7,033,849 Liabilities incurred from agency relationships 765,844 739,276 Account for agency business 400,507 423,798 Dividend payables 478 474 Lease liabilities 559,113 578,808 Others 51,901 446,747 28,612,288 29,494,402 Other non-financial Other payables 386,094 348,003 Unearned revenue 669,908 656,375 Accrued expenses 815,941 956,461 Deferred revenue on credit card points 211,815 214,053 Withholding taxes 180,092 164,333 Separate account liabilities 10,701,404 11,071,159 Others 226,481 225,696 13,191,735 13,636,080 ￦ 41,804,023 ￦ 43,130,482

Equity

Equity	12 Months Ended
	Dec. 31, 2021
Equity [abstract]
Equity	27. Equity 27.1 Share Capital 27.1.1 Details of share capital as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Type of share Ordinary share Ordinary share (In millions of Korean won Number of authorized shares 1,000,000,000 1,000,000,000 Par value per share (In Korean won) ￦ 5,000 ￦ 5,000 Number of issued shares 415,807,920 415,807,920 Share capital ￦ 2,090,558 ￦ 2,090,558 27.1.2 Changes in outstanding shares for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In number of shares) Beginning 389,634,335 389,634,335 Increase — — Decrease — — Ending 389,634,335 389,634,335 27.2 Hybrid Securities Details of hybrid securities classified as equity as of December 31, 2020 and 2021, are as follows: Hybrid securities Issuance date Maturity Interest rate (%) as of December 31, 2021 December 31, 2020 December 31, 2021 (In millions of Korean won) The 1-1 st May 2, 2019 Perpetual bond 3.23 ￦ 349,309 ￦ 349,309 The 1-2 nd May 2, 2019 Perpetual bond 3.44 49,896 49,896 The 2-1 st May 8, 2020 Perpetual bond 3.30 324,099 324,099 The 2-2 nd May 8, 2020 Perpetual bond 3.43 74,812 74,812 The 3-1 st Jul. 14, 2020 Perpetual bond 3.17 369,099 369,099 The 3-2 nd Jul. 14, 2020 Perpetual bond 3.38 29,922 29,922 The 4-1 st Oct. 20, 2020 Perpetual bond 3.00 433,996 433,996 The 4-2 nd Oct. 20, 2020 Perpetual bond 3.28 64,855 64,855 The 5-1 st Feb. 19, 2021 Perpetual bond 2.67 — 419,071 The 5-2 nd Feb. 19, 2021 Perpetual bond 2.87 — 59,862 The 5-3 rd Feb. 19, 2021 Perpetual bond 3.28 — 119,727 The 6-1 st May 28, 2021 Perpetual bond 3.20 — 165,563 The 6-2 nd May 28, 2021 Perpetual bond 3.60 — 109,708 The 7-1 st Oct. 8, 2021 Perpetual bond 3.57 — 208,468 The 7-2 nd Oct. 8, 2021 Perpetual bond 3.80 — 59,834 ￦ 1,695,988 ￦ 2,838,221 The above hybrid securities are early redeemable by the Group after 5 or 7 or 10 years from the issuance date. On the other hand, hybrid securities of ￦ 574,580 million issued by Kookmin Bank are recognized as non-controlling 27.3 Capital Surplus Details of capital surplus as of December 31, 2020 and 2021, are as follows December 31, 2020 December 31, 2021 (In millions of Korean won) Paid-in ￦ 13,190,274 ￦ 13,190,274 Losses on sales of treasury shares (481,332 ) (481,332 ) Other capital surplus 4,002,714 4,219,356 Consideration for exchange right of exchangeable bonds 11,933 11,933 ￦ 16,723,589 ￦ 16,940,231 27.4 Accumulated Other Comprehensive Income Details of accumulated other comprehensive income as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Remeasurements of net defined benefit liabilities ￦ (282,650 ) ￦ (328,392 ) Currency translation differences (131,113 ) 96,534 Gains on financial instruments at fair value through other comprehensive income 717,230 918,927 Share of other comprehensive loss of associates and joint ventures (3,529 ) (2,980 ) Losses on cash flow hedging instruments (28,597 ) (7,733 ) Gains (losses) on hedging instruments of net investments in foreign operations 22,277 (35,658 ) Other comprehensive income (loss) arising from separate account 8,698 (55,116 ) Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk (11,507 ) 2,208 Gains on overlay adjustment 339,202 459,484 Assets of a disposal group held for sale — 7,671 ￦ 630,011 ￦ 1,054,945 27.5 Retained Earnings Details of retained earnings as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Legal reserves 1 ￦ 557,405 ￦ 695,347 Voluntary reserves 982,000 982,000 Unappropriated retained earnings 2 21,001,211 23,995,468 ￦ 22,540,616 ￦ 25,672,815 1 With respect to the allocation of net profit earned in a fiscal term, the Parent Company must set aside in its legal reserve an amount equal to at least 10% of its profit after tax as reported in the financial statements, each time it pays dividends on its net profits earned until its legal reserve reaches the aggregate amount of its paid-in 2 Retained earnings restricted for dividend at subsidiaries level pursuant to laws and regulations amounts to ￦ 4,116,579 million as of December 31, 2021. 27.6 Treasury Shares Changes in treasury shares for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Acquisition Disposal Ending (In millions of Korean won and in number of shares) Number of treasury shares * 26,173,585 — — 26,173,585 Carrying amount ￦ 1,136,188 ￦ — ￦ — ￦ 1,136,188 2021 Beginning Acquisition Disposal Ending (In millions of Korean won and in number of shares) Number of treasury shares * 26,173,585 — — 26,173,585 Carrying amount ￦ 1,136,188 ￦ — ￦ — ￦ 1,136,188 * 5 million treasury shares are deposited at the Korea Securities Depository for the exchange of exchangeable bonds.

Net Interest Income

Net Interest Income	12 Months Ended
	Dec. 31, 2021
Interest Revenue (Expense), Net [Abstract]
Net Interest Income	28. Net Interest Income Details of interest income, interest expense, and net interest income for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Interest income Due from financial institutions measured at fair value through profit or loss ￦ 2,685 ￦ 649 ￦ 1,723 Securities measured at fair value through profit or loss 668,377 647,840 579,128 Loans measured at fair value through profit or loss 33,001 10,876 9,537 Securities measured at fair value through other comprehensive income 774,864 719,434 784,980 Loans measured at fair value through other comprehensive income 14,708 7,899 4,618 Due from financial institutions measured at amortized cost 150,635 92,155 66,375 Securities measured at amortized cost 599,519 627,201 765,656 Loans measured at amortized cost 12,247,493 12,177,822 12,745,780 Others 147,905 201,871 253,081 14,639,187 14,485,747 15,210,878 Interest expense Deposits 3,481,121 2,916,794 2,218,556 Borrowings 596,425 572,946 510,385 Debentures 1,240,566 1,186,310 1,169,708 Others 124,288 87,423 82,657 5,442,400 4,763,473 3,981,306 Net interest income ￦ 9,196,787 ￦ 9,722,274 ￦ 11,229,572 Interest income recognized on impaired loans is ￦ 54,033 million, ￦ 56,606 million and ￦ 52,638 million for the years ended December 31, 2019, 2020 and 2021, respectively.

Net Fee and Commission Income

Net Fee and Commission Income	12 Months Ended
	Dec. 31, 2021
Fee and commission income (expense) [abstract]
Net Fee and Commission Income	29. Net Fee and Commission Income Details of fee and commission income, fee and commission expense, and net fee and commission income for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Fee and commission income Banking activity fees ￦ 214,512 ￦ 189,100 ￦ 178,412 Lending activity fees 83,916 91,663 82,184 Credit card and debit card related fees 1,316,636 1,378,450 1,526,911 Agent activity fees 172,211 196,518 205,206 Trust and other fiduciary fees 388,352 331,827 408,834 Fund management related fees 153,798 154,612 178,090 Acceptances and guarantees fees 48,122 54,108 49,782 Foreign currency related fees 134,145 173,313 245,299 Securities agency fees 145,846 172,097 174,709 Other business account commission on consignment 36,813 40,461 39,178 Commissions received on securities business 445,987 793,278 881,407 Lease fees 428,195 636,301 897,983 Others 310,714 315,296 455,611 3,879,247 4,527,024 5,323,606 Fee and commission expense Trading activity related fees * 28,869 38,497 54,857 Lending activity fees 26,040 33,444 42,981 Credit card and debit card related fees 892,391 848,823 831,724 Outsourcing related fees 190,312 216,962 210,480 Foreign currency related fees 42,902 49,435 51,931 Others 343,729 380,924 506,050 1,524,243 1,568,085 1,698,023 Net fee and commission income ￦ 2,355,004 ￦ 2,958,939 ￦ 3,625,583 * Fees from financial instruments at fair value through profit or loss

Net Gains or Losses on Financia

Net Gains or Losses on Financial Instruments at Fair Value through Profit or Loss	12 Months Ended
	Dec. 31, 2021
Net Gains Or Losses On Financial Assets Liabilities At Fair Value Through Profit Or Loss [Abstract]
Net Gains or Losses on Financial Instruments at Fair Value through Profit or Loss	30. Net Gains or Losses on Financial Instruments at Fair Value through Profit or Loss 30.1 Net Gains or Losses on Financial Instruments at Fair Value through Profit or Loss Net gains or losses on financial instruments at fair value through profit or loss include dividend income, gains or losses arising from changes in fair value, and gains or losses arising from sales and redemptions. Details of net gains or losses on financial instruments at fair value through profit or loss for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains on financial instruments at fair value through profit or loss Financial assets at fair value through profit or loss: Debt securities ￦ 1,613,946 ￦ 2,061,505 ￦ 1,804,112 Equity securities 428,646 725,072 733,823 2,042,592 2,786,577 2,537,935 Derivatives held for trading: Interest rate 2,685,998 2,632,246 4,820,712 Currency 5,251,597 8,335,594 7,492,806 Stock or stock index 2,612,422 2,808,284 1,603,501 Credit 41,548 28,434 20,147 Commodity 15,240 18,097 21,864 Others 212,731 231,901 145,879 10,819,536 14,054,556 14,104,909 Financial liabilities at fair value through profit or loss 46,750 28,160 72,585 Other financial instruments 5,811 689 6,753 12,914,689 16,869,982 16,722,182 Losses on financial instruments at fair value through profit or loss Financial assets at fair value through profit or loss: Debt securities 752,999 1,040,285 1,280,960 Equity securities 315,743 444,554 426,431 1,068,742 1,484,839 1,707,391 Derivatives held for trading: Interest rate 2,758,205 2,687,114 4,669,893 Currency 5,118,095 8,191,456 7,422,604 Stock or stock index 1,585,086 2,558,205 1,604,027 Credit 42,172 19,213 14,051 Commodity 9,437 21,797 14,815 Others 190,979 253,406 175,411 9,703,974 13,731,191 13,900,801 Financial liabilities at fair value through profit or loss 94,426 153,227 80,790 Other financial instruments 5,704 116 6,839 10,872,846 15,369,373 15,695,821 Net gains on financial instruments at fair value through profit or loss ￦ 2,041,843 ￦ 1,500,609 ￦ 1,026,361 30.2 Net Gains or Losses on Financial Instruments Designated at Fair Value through Profit or Loss Net gains or losses on financial instruments designated at fair value through profit or loss include gains or losses arising from changes in fair value, and gains or losses arising from sales and redemptions. Details of net gains or losses on financial instruments designated at fair value through profit or loss for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains on financial instruments designated at fair value through profit or loss Financial liabilities designated at fair value through profit or loss ￦ 555,749 ￦ 654,045 ￦ 623,929 555,749 654,045 623,929 Losses on financial instruments designated at fair value through profit or loss Financial liabilities designated at fair value through profit or loss 1,953,720 1,143,288 654,986 1,953,720 1,143,288 654,986 Net losses on financial instruments designated at fair value through profit or loss ￦ (1,397,971 ) ￦ (489,243 ) ￦ (31,057 )

Net Other Operating Income and

Net Other Operating Income and Expenses	12 Months Ended
	Dec. 31, 2021
Other Operating Income And Expenses [Abstract]
Net Other Operating Income and Expenses	31. Net Other Operating Income and Expenses Details of other operating income and expenses for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Other operating income Gains on financial instruments at fair value through other comprehensive income: Gains on redemption of financial instruments at fair value through other comprehensive income ￦ 796 ￦ 351 ￦ 2 Gains on disposal of financial instruments at fair value through other comprehensive income 222,371 304,217 126,710 223,167 304,568 126,712 Gains on financial assets at amortized cost: Gains on sale of loans measured at amortized cost 80,746 180,038 136,620 Gains on redemption of securities measured at amortized cost — — 126 Gains on disposal of securities measured at amortized cost — 229 41 80,746 180,267 136,787 Gains on loans measured at fair value through other comprehensive income: Gains on sale of loans measured at fair value through other comprehensive income — — 226 — — 226 Gains on foreign exchange transactions 2,183,703 3,634,987 3,878,089 Dividend income 54,768 45,125 33,805 Others 321,244 591,798 753,575 2,863,628 4,756,745 4,929,194 Other operating expenses Losses on financial instruments at fair value through other comprehensive income: Losses on redemption of financial instruments at fair value through other comprehensive income — 320 2,172 Losses on disposal of financial instruments at fair value through other comprehensive income 16,975 19,159 222,512 16,975 19,479 224,684 Losses on financial assets at amortized cost: Losses on sale of loans measured at amortized cost 19,439 16,061 14,669 Losses on redemption of securities measured at amortized cost — — 6 Losses on disposal of securities measured at amortized cost — 6,513 2 19,439 22,574 14,677 Losses on foreign exchange transactions 1,970,294 3,530,618 3,570,783 Deposit insurance fee 469,015 507,621 550,677 Credit guarantee fund fee 213,911 242,216 263,297 Depreciation expenses of operating lease assets 247,374 423,684 602,908 Others 989,944 1,510,483 1,625,735 3,926,952 6,256,675 6,852,761 Net other operating expenses ￦ (1,063,324 ) ￦ (1,499,930 ) ￦ (1,923,567 )

General and Administrative Expe

General and Administrative Expenses	12 Months Ended
	Dec. 31, 2021
General And Administrative Expense [Abstract]
Disclosure of general and administrative expense [text block]	32. General and Administrative Expenses 32.1 Details of general and administrative expenses for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Expenses related to employee Employee benefits—salaries ￦ 2,557,821 ￦ 2,789,201 ￦ 3,007,439 Employee benefits—others 848,421 871,014 927,665 Post-employment benefits—defined benefit plans 232,701 216,891 237,315 Post-employment benefits—defined contribution plans 27,924 37,328 37,731 Termination benefits 239,790 361,098 322,970 Share-based payments 49,418 49,364 101,935 3,956,075 4,324,896 4,635,055 Depreciation and amortization 784,431 874,911 850,614 Other general and administrative expenses Rental expense 109,745 116,325 112,902 Tax and dues 238,670 260,071 268,383 Communication 48,749 53,596 60,221 Electricity and utilities 29,161 32,298 36,565 Publication 15,136 13,988 13,417 Repairs and maintenance 23,947 32,448 53,218 Vehicle 11,537 14,314 16,901 Travel 21,452 12,251 13,271 Training 31,451 27,610 34,056 Service fees 227,631 238,787 260,298 Electronic data processing expenses 258,456 280,773 314,511 Advertising 228,826 236,618 210,187 Others 286,538 295,926 321,254 1,531,299 1,615,005 1,715,184 ￦ 6,271,805 ￦ 6,814,812 ￦ 7,200,853 32.2 Share-based Payments 32.2.1 Stock grants The Group changed the scheme of share-based payments awarded to executives and employees from stock options to stock grants in November 2007. The stock grants award program is an incentive plan that sets, on grant date, the maximum number of shares that can be awarded. Actual shares to be granted is determined in accordance with achievement of pre-set 32.2.1.1 Details of stock grants linked to long-term performance as of December 31, 2021, are as follows: Grant date Number of granted shares 1 Vesting conditions 2 (In number of shares) KB Financial Group Inc. Series 22 Apr. 1, 2019 3,278 Services fulfillment, market performan 3 non-market 4 Series 23 May 27, 2019 1,436 Services fulfillment, market performan 3 non-market 4 Series 25 Jan. 1, 2020 36,103 Services fulfillment, market performance 3 non-market 4 Series 27 Jun. 16, 2020 184 S ervices fulfillment, mark 3 non-market 4 Series 28 Nov. 21, 2020 68,135 Services fulfillment, 3 non-market 5 Series 29 Jan. 1, 2021 94,120 Services fulfillment, market pe 3 non-market 4 Series 30 Apr. 1, 2021 3,069 Services fulfillment, market perform 3 non-market 4 Series 31 May 27, 2021 1,344 Services fulfillment, market perfor 3 non-market 4 Series 32 Aug. 20, 2021 125 Services fulfillment, market perfo 3 non-market 4 Deferred grant in 2015 5,303 Satisfied Deferred grant in 2016 6,119 Satisfied Deferred grant in 2017 2,249 Satisfied Deferred grant in 2018 3,863 Satisfied Deferred grant in 2019 15,189 Satisfied Deferred grant in 2020 45,661 Satisfied 286,178 Kookmin Bank Series 76 Apr. 1, 2019 5,765 Services fulfillment, market perfor 3 non-market 4 Series 77 May 27, 2019 4,396 Services fulfillment, market perfor 3 non-market 4 Series 78 Nov. 21, 2019 36,443 Services fulfillment, market performance 3 non-market 6 Series 79 Jan. 1, 2020 223,517 Services fulfillment, market perfor 3 non-market 4 Series 80 Mar. 1, 2020 7,943 Services fulfillment, market perform 3 non-market 4 Series 81 Jan. 1, 2021 234,366 Services fulfillment, market perform 3 non-market 4 Grant date Number of granted shares 1 Vesting conditions 2 (In number of shares) Series 82 Mar. 1, 2021 18,202 Services fulfillment, market performanc 3 non-market 4 Series 83 Apr. 1, 2021 7,871 S ervices fulfillment, market performan 3 non-market 4 Series 84 May 27, 2021 4,032 Services fulfillment, market performance 3 non-market 4 Deferred grant in 2015 760 Satisfied Deferred grant in 2016 12,671 Satisfied Deferred grant in 2017 9,763 Satisfied Deferred grant in 2018 33,916 Satisfied Deferred grant in 2019 66,067 Satisfied Deferred grant in 2020 80,634 Satisfied 746,346 Other subsidiaries Stock granted in 2010 106 Services fulfillment, ma ke perform anc 3 0 0% an non- for manc 4 Stock granted in 2011 146 Stock granted in 2012 420 Stock granted in 2013 544 Stock granted in 2014 1,028 Stock granted in 2015 2,602 Stock granted in 2016 5,713 Stock granted in 2017 17,820 Stock granted in 2018 62,610 Stock granted in 2019 76,872 Stock granted in 2020 375,558 Stock granted in 2021 425,583 969,002 2,001,526 1 Granted shares represent the total number of shares initially granted to executives and employees who have residual shares as of December 31, 2021 (Deferred grants are residual shares vested as of December 31, 2021). 2 Executives and employees were given the right of choice about the timing of the deferred paymen 3 Relative TSR (Total Shareholder Return): [(Fair value at the end of the contract—Fair value at the beginning of the contract) + (Total amount of dividend per share paid during the contract period)] / Fair value at the beginning of the contract 4 Performance results of company and employee 5 EPS (Earnings Per Share), Asset Quality, HCROI (Human Capital Return on Investment), Profit from non-banking 6 EPS, Asset Quality 32.2.1.2 Details of stock grants linked to short-term performance as of December 31, 2021, are as follows: Estimated number of vested shares* Vesting conditions (In number of shares) KB Financial Group Inc. Stock granted in 2015 5,352 Satisfied Stock granted in 2016 5,409 Satisfied Stock granted in 2017 2,489 Satisfied Stock granted in 2018 7,400 Satisfied Stock granted in 2019 18,692 Satisfied Stock granted in 2020 34,658 Satisfied Stock granted in 2021 34,965 Proportional to service period Kookmin Bank Stock granted in 2015 5,019 Satisfied Stock granted in 2016 12,867 Satisfied Stock granted in 2017 3,862 Satisfied Stock granted in 2018 38,067 Satisfied Stock granted in 2019 83,778 Satisfied Stock granted in 2020 135,336 Satisfied Stock granted in 2021 109,561 Proportional to service period Other subsidiaries Stock granted in 2015 7,777 Satisfied Stock granted in 2016 34,345 Satisfied Stock granted in 2017 58,052 Satisfied Stock granted in 2018 226,242 Satisfied Stock granted in 2019 408,353 Satisfied Stock granted in 2020 606,891 Satisfied Stock granted in 2021 267,649 Proportional to service period 2,106,764 * Executives and employees were given the right of choice about the timing of the deferred payment (after the date of retirement), payment ratio, and payment period. Accordingly, a certain percentage of the granted shares is deferred for up to five years after the date of retirement after the deferred grant has been confirmed. 32.2.1.3 Stock grants are measured at fair value using the MonteCarlo simulation model and assumptions used in measuring the fair value as of December 31, 2021, are as follows: Risk-free Fair value Fair value (non-market (In Korean won) Linked to long-term performance (KB Financial Group Inc.) Series 22 1.35 50,023~56,379 50,023~56,379 Series 23 1.35 50,023~56,379 50,023~56,379 Series 25 1.35 50,023~56,379 50,023~56,379 Series 27 1.35 — 48,344~51,523 Series 28 1.35 43,391~47,774 46,978~51,724 Series 29 1.35 48,344~56,379 48,344~56,379 Series 30 1.35 46,800~51,523 46,800~51,523 Series 31 1.35 46,800~51,523 46,800~51,523 Series 32 1.35 50,023~56,379 50,023~56,379 Deferred grant in 2015 1.35 — 48,344~56,379 Deferred grant in 2016 1.35 — 51,523~56,379 Deferred grant in 2017 1.35 — 53,308~56,379 Deferred grant in 2018 1.35 — 51,523~56,379 Deferred grant in 2019 1.35 — 53,308~56,379 Deferred grant in 2020 1.35 — 48,344~56,379 (Kookmin Bank) Series 76 1.35 50,023~56,379 50,023~56,379 Series 77 1.35 50,023~56,379 50,023~56,379 Series 78 1.35 49,885~56,223 50,023~56,379 Series 79 1.35 50,023~56,379 50,023~56,379 Series 80 1.35 48,344~53,308 48,344~53,308 Series 81 1.35 48,344~56,379 48,344~56,379 Series 82 1.35 46,800~51,523 46,800~51,523 Series 83 1.35 46,800~51,523 46,800~51,523 Series 84 1.35 46,800~51,523 46,800~51,523 Grant deferred in 2015 1.35 — 56,379~56,379 Grant deferred in 2016 1.35 — 47,153~56,379 Grant deferred in 2017 1.35 — 51,523~56,379 Grant deferred in 2018 1.35 — 51,523~56,379 Grant deferred in 2019 1.35 — 45,096~56,379 Grant deferred in 2020 1.35 — 51,523~56,379 (Other subsidiaries) Stock granted in 2010 1.35 — 53,308~53,308 Stock granted in 2011 1.35 — 53,308~53,308 Stock granted in 2012 1.35 — 51,523~53,308 Stock granted in 2013 1.35 — 51,523~53,308 Stock granted in 2014 1.35 — 51,523~51,523 Stock granted in 2015 1.35 — 46,800~56,379 Stock granted in 2016 1.35 — 46,436~56,502 Stock granted in 2017 1.35 — 45,096~61,294 Stock granted in 2018 1.35 — 45,096~56,502 Stock granted in 2019 1.35 46,800~56,502 45,096~56,502 Stock granted in 2020 1.35 48,344~56,502 45,096~56,502 Stock granted in 2021 1.35 46,800~56,379 46,800~56,502 Risk-free Fair value Fair value (non-market (In Korean won) Linked to short-term performance (KB Financial Group Inc.) Stock granted in 2015 1.35 — 48,344~56,379 Stock granted in 2016 1.35 — 45,304~56,379 Stock granted in 2017 1.35 — 51,523~56,379 Stock granted in 2018 1.35 — 51,523~56,379 Stock granted in 2019 1.35 — 53,308~56,379 Stock granted in 2020 1.35 — 48,344~56,379 Stock granted in 2021 1.35 — 50,023~53,308 (Kookmin Bank) Stock granted in 2015 1.35 — 47,153~56,379 Stock granted in 2016 1.35 — 47,153~56,379 Stock granted in 2017 1.35 — 51,523~56,379 Stock granted in 2018 1.35 — 51,523~56,379 Stock granted in 2019 1.35 — 53,308~56,379 Stock granted in 2020 1.35 — 51,523~56,379 Stock granted in 2021 1.35 — 50,023~54,229 (Other subsidiaries) Stock granted in 2015 1.35 — 46,800~56,502 Stock granted in 2016 1.35 — 46,800~56,502 Stock granted in 2017 1.35 — 45,096~56,502 Stock granted in 2018 1.35 — 45,096~56,502 Stock granted in 2019 1.35 — 45,096~56,502 Stock granted in 2020 1.35 — 46,800~56,502 Stock granted in 2021 1.35 — 46,800~54,649 The Group uses the volatility of the stock price over the previous year as the expected volatility, and uses the arithmetic mean of the price-dividend ratio of one year before, two years before, and three years before the base year as the dividend yield and uses one-year 32.2.1.4 The accrued expenses for share-based payments related to stock grants are ￦ 135,327 million and ￦ 193,023 million as of December 31, 2020 and 2021, respectively, and the compensation costs amounting to ￦ 48,712 million and ￦ 101,897 million were recognized for the years ended December 31, 2020 and 2021, respectively. 32.2.2 Mileage stock 32.2.2.1 Details of mileage stock as of December 31, 2021, are as follows: Grant date Number of granted shares 1 Expected exercise 2 Remaining (In number of shares) Stock granted in 2019 Jan. 11, 2019 26,580 0.00~0.03 14,907 Apr. 1, 2019 167 0.00~0.25 73 Apr. 18, 2019 105 0.00~0.29 45 Apr. 22, 2019 33 0.00~0.30 17 Jul. 1, 2019 109 0.00~0.50 87 Aug. 29, 2019 39 0.00~0.66 35 Sep. 2, 2019 50 0.00~0.67 28 Nov. 1, 2019 119 0.00~0.83 71 Nov. 8, 2019 14 0.00~0.85 6 Dec. 5, 2019 56 0.00~0.93 43 Dec. 6, 2019 84 0.00~0.93 82 Dec. 31, 2019 87 0.00~1.00 65 Stock granted in 2020 Jan. 18, 2020 28,645 0.00~1.05 19,435 May 12, 2020 46 0.00~1.36 44 Jun. 30, 2020 206 0.00~1.50 206 Aug. 26, 2020 40 0.00~1.65 40 Oct. 29, 2020 160 0.00~1.83 160 Nov. 6, 2020 45 0.00~1.85 37 Nov. 30, 2020 35 0.00~1.92 34 Dec. 2, 2020 57 0.00~1.92 53 Dec. 4, 2020 154 0.00~1.93 141 Dec. 30, 2020 88 0.00~2.00 86 Stock granted in 2021 Jan. 15, 2021 28,156 0.00~2.04 26,708 Apr. 1, 2021 89 0.00~2.26 89 Jul. 1, 2021 54 0.00~2.50 54 Jul. 2, 2021 11 0.00~2.50 11 Jul. 27, 2021 70 0.00~2.57 70 Nov. 1, 2021 71 0.00~2.84 71 Nov. 16, 2021 53 0.00~2.88 53 Dec. 3, 2021 91 0.00~2.92 91 Dec. 6, 2021 87 0.00~2.93 87 Dec. 30, 2021 76 0.00~3.00 76 85,677 63,005 1 Mileage stock is exercisable for two years after one year from the grant date at the closing price of the end of the previous month. However, mileage stock can be exercised at the closing price of the end of the previous month on the date of occurrence of retirement or transfer despite a one-year 2 Assessed based on the stock price as of December 31, 2021. These shares are vested immediately at grant date. 32.2.2.2 The accrued expenses for share-based payments related to mileage stock are ￦ 2,862 million and ￦ 3,465 million as of December 31, 2020 and 2021, respectively. The compensation costs amounting to ￦ 1,086 million and ￦ 2,116 million were recognized as expenses for the years ended December 31, 2020 and 2021, respectively. 32.2.3 Long-term share-based payments The Group calculates the short-term performance bonus of executives of Prudential Life Insurance Company of Korea Ltd. based on the result of performance evaluation as of the grant date and defers the bonus for three years and pays it in cash 32.2.3.1 Details of long-term share-based payments as of December 31, 2021, are as follows: Grant date Vested shares Expected exercise period (years) Vesting condition (In number of shares) Granted in 2020 2020 13,402 2.00 Services fulfillment 32.2.3.2 Long-term share-based payments are measured at fair value using the MonteCarlo simulation model and assumptions used in measuring the fair value as of December 31, 2021, are as follows: Risk-free rate (%) Fair value (market performance condition) Fair value (non-market performance (In Korean won) Granted in 2020 1.35 — 51,523 The Group uses the volatility of the stock price over the previous year as the expected volatility, and uses the arithmetic mean of the price-dividend ratio of one year before, two years before, and three years before the base year as the dividend yield and uses one-year 32.2.3.3 The accrued expenses for long-term share-based payments are ￦ 652 million and ￦ 690 million as of December 31, 2020 and 2021, respectively. The compensation costs amounting to ￦ 652 million and ￦ 38 million were recognized as expenses for the years ended December 31, 2020 and 2021, respectively.

Net Other Non-Operating Income

Net Other Non-Operating Income and Expenses	12 Months Ended
	Dec. 31, 2021
Other Nonoperating Income Expense [Abstract]
Net Other Non-Operating Income and Expenses	33. Net Other Non-Operating Details of other non-operating 2019 2020 2021 (In millions of Korean won) Other non-operating Gains on disposal of property and equipment ￦ 35,747 ￦ 111,132 ￦ 9,045 Rental income 85,720 113,075 34,791 Gains on a bargain purchase — 145,067 288 Gain on sales of disposal group held for sale 2,731 — — Others 84,793 96,931 81,210 208,991 466,205 125,334 Other non-operating Losses on disposal of prop e 8,587 11,945 6,552 Donation 102,711 113,083 103,647 Restoration costs 2,902 5,043 3,436 Management cost for written-off 3,382 3,018 4,054 Others 64,523 143,726 117,182 182,105 276,815 234,871 Net other non-operating ￦ 26,886 ￦ 189,390 ￦ (109,537 )

Income Tax Expense

Income Tax Expense	12 Months Ended
	Dec. 31, 2021
Major components of tax expense (income) [abstract]
Income Tax Expense	34. Income Tax Expense 34.1 Details of income tax expense for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Income tax payable Current income tax expense ￦ 1,043,047 ￦ 1,099,171 ￦ 1,571,947 Adjustments of income tax of prior years recognized in current tax (51,130 ) (13,434 ) 7,952 991,917 1,085,737 1,579,899 Changes in deferred income tax assets and liabilities* 286,099 326,918 214,660 Income tax recognized directly in equity and others Remeasurements of net defined benefit liabilities 20,676 4,949 18,638 Currency translation differences (5,714 ) 14,988 (15,675 ) Net gains or losses on financial assets at fair value through other comprehensive income (13,168 ) (88,907 ) (71,421 ) Share of other comprehensive income or loss of associates and joint ventures (3,147 ) 2,976 (7 ) Gains or losses on cash flow hedging instruments 10,537 7,580 (21,534 ) Gains or losses on hedging instruments of net investments in foreign operations 3,194 (24,500 ) 25,599 Other comprehensive income or loss arising from separate account (1,301 ) 3,671 24,206 Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk 4,294 (3,350 ) (5,202 ) Net gains or losses on overlay adjustment (72,817 ) (61,637 ) (46,834 ) Consideration for exchange right of exchangeable bonds — (4,526 ) — (57,446 ) (148,756 ) (92,230 ) Others — 495 (5,104 ) Income tax expense ￦ 1,220,570 ￦ 1,264,394 ￦ 1,697,225 * Effect of business combination is excluded. 34.2 Analysis of the relationship between net profit before income tax expense and income tax expense for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 Tax rate Amount Tax rate Amount Tax rate Amount (In millions of Korean won) Profit before income tax expense ￦ 4,533,198 ￦ 4,779,972 ￦ 6,081,606 Income tax at the applicable tax rate* 27.27 1,236,267 27.28 1,304,130 27.33 1,662,080 Non-taxable (0.52 ) (23,601 ) (1.55 ) (73,855 ) (0.67 ) (40,708 ) Non-deductible 0.42 19,086 0.35 16,541 0.42 25,739 Tax credit and tax exemption (0.01 ) (627 ) (0.08 ) (4,016 ) (0.01 ) (361 ) Temporary difference for which no deferred tax is recognized (0.11 ) (4,860 ) 0.47 22,189 0.08 5,065 Changes in recognition and measurement of deferred tax — (100 ) 0.24 11,616 0.10 5,997 Income tax refund for tax of prior years (0.20 ) (9,105 ) (0.46 ) (22,139 ) (0.23 ) (13,953 ) Income tax expense of overseas branches 0.11 5,004 0.23 10,739 0.31 18,571 Others (0.03 ) (1,494 ) (0.02 ) (811 ) 0.57 34,795 Average effective tax rate and income tax expense 26.93 ￦ 1,220,570 26.45 ￦ 1,264,394 27.90 ￦ 1,697,225 * Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.

Dividends

Dividends	12 Months Ended
	Dec. 31, 2021
Dividends [Abstract]
Dividends	35. Dividends The annual dividends paid to the shareholders of the Parent Company in 2020 and 2021 were ￦ 861,092 million (￦ 2,210 per share) and ￦ 689,653 million (￦ 1,770 per share), respectively. Meanwhile, the quarterly dividends of ￦ 292,226 million (￦ 750 per share) with dividends record date of June 30, 2021 were paid on August 6, 2021 according to the resolution of the board of directors on July 22, 2021. The annual dividends to the shareholders of the Parent Company for the year ended December 31, 2021, amounting to ￦ 853,299 million (￦ 2,190 per share) is to be proposed at the general shareholders’ meeting scheduled for March 25, 2022. The Group’s consolidated financial statements as of and for the year ended December 31, 2021, do not reflect this dividend payable.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2021
Disclosure of analysis of other comprehensive income by item [abstract]
Accumulated Other Comprehensive Income (Loss)	36. Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Changes except for Reclassification Transfer within equity Tax effect Ending (In millions of Korean won) Remeasurements of net defined benefit liabilities ￦ (269,505 ) ￦ (18,094 ) ￦ — ￦ — ￦ 4,949 ￦ (282,650 ) Currency translation differences 31,793 (177,894 ) — — 14,988 (131,113 ) Gains on financial instruments at fair value through other comprehensive income 487,331 757,236 (112,020 ) (326,410 ) (88,907 ) 717,230 Share of other comprehensive income (loss) of associates and joint ventures 3,318 (3,923 ) (5,900 ) — 2,976 (3,529 ) Losses on cash flow hedging instruments (27,333 ) (48,034 ) 39,190 — 7,580 (28,597 ) Gains (losses) on hedging instruments of net investments in foreign operations (41,992 ) 88,769 — — (24,500 ) 22,277 Other comprehensive income arising from separate account 18,381 2,834 (16,188 ) — 3,671 8,698 Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk (20,326 ) 12,169 — — (3,350 ) (11,507 ) Gains on overlay adjustment 187,077 248,688 (34,926 ) — (61,637 ) 339,202 ￦ 368,744 ￦ 861,751 ￦ (129,844 ) ￦ (326,410 ) ￦ (144,230 ) ￦ 630,011 2021 Beginning Changes except for Reclassification Transfer within Tax effect Ending (In millions of Korean won) Remeasurements of net defined benefit liabilities ￦ (282,650 ) ￦ (64,380 ) ￦ — ￦ — ￦ 18,638 ￦ (328,392 ) Currency translation differences (131,113 ) 248,998 1,995 (7,671 ) (15,675 ) 96,534 Gains on financial instruments at fair value through other comprehensive income 717,230 (62,043 ) 20,537 314,624 (71,421 ) 918,927 Share of other comprehensive income (loss) of associates and joint ventures (3,529 ) 3,276 (2,720 ) — (7 ) (2,980 ) Losses on cash flow hedging instruments (28,597 ) 95,478 (53,080 ) — (21,534 ) (7,733 ) Gains (losses) on hedging instruments of net investments in foreign operations 22,277 (88,729 ) 5,195 — 25,599 (35,658 ) Other comprehensive income (loss) arising from separate account 8,698 (81,601 ) (6,419 ) — 24,206 (55,116 ) Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk (11,507 ) 18,917 — — (5,202 ) 2,208 Gains on overlay adjustment 339,202 257,574 (90,458 ) — (46,834 ) 459,484 Assets of a disposal group held for sale — — — 7,671 — 7,671 ￦ 630,011 ￦ 327,490 ￦ (124,950 ) ￦ 314,624 ￦ (92,230 ) ￦ 1,054,945

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2021
Earnings per share [abstract]
Earnings per Share	37. Earnings per Share 37.1 Basic Earnings per Share Basic earnings per share is calculated by dividing profit attributable to ordinary equity holders of the Parent Company by the weighted average number of ordinary shares outstanding. 37.1.1 Weighted average number of ordinary shares outstanding 2019 2020 2021 Number of shares Accumulated Number of shares Accumulated Number of shares Accumulated (In number of shares) Number of issued ordinary shares 415,807,920 152,564,638,665 415,807,920 152,185,698,720 415,807,920 151,769,890,800 Number of treasury shares (26,173,585 ) (9,801,574,522 ) (26,173,585 ) (9,579,532,110 ) (26,173,585 ) (9,553,358,525 ) Average number of ordinary shares outstanding 389,634,335 142,763,064,143 389,634,335 142,606,166,610 389,634,335 142,216,532,275 Number of days 365 366 365 Weighted average number of ordinary shares outstanding 391,131,683 389,634,335 389,634,335 37.1.2 Basic earnings per share 2019 2020 2021 (In Korean won and in number of shares) Profit attributable to shareholders of the Parent Company ￦ 3,311,255,938,055 ￦ 3,468,447,701,501 ￦ 4,409,543,288,213 Deduction: Dividends on hybrid securities (6,512,500,000 ) (22,859,500,000 ) (71,537,500,000 ) Profit attributable to ordinary equity holders of the Parent Company (A) 3,304,743,438,055 3,445,588,201,501 4,338,005,788,213 Weighted average number of ordinary shares outstanding (B) 391,131,683 389,634,335 389,634,335 Basic earnings per share (A/B) ￦ 8,449 ￦ 8,843 ￦ 11,134 37.2 Diluted Earnings per Share Diluted earnings per share is calculated through increasing the weighted average number of ordinary shares outstanding by the weighted average number of additional ordinary shares that would have been outstanding assuming the conversion of all dilutive potential ordinary shares. The Group has dilutive potential ordinary shares such as stock grants and ordinary share exchange right of exchangeable bonds. A calculation is done to determine the number of shares that could have been acquired at fair value (determined as the average market share price for the year) based on the monetary value of stock grants. The number of shares calculated above is compared with the number of shares that would have been issued assuming the settlement of stock grants. Exchangeable bonds are included in potential ordinary shares from the exercisable date of the exchange right, and interest expense after tax for the period is added to profit for diluted earnings per share. 37.2.1 Adjusted profit for diluted earnings per share 2019 2020 2021 (In Korean won) Profit attributable to shareholders of the Parent Company ￦ 3,311,255,938,055 ￦ 3,468,447,701,501 ￦ 4,409,543,288,213 Deduction: Dividends on hybrid securities (6,512,500,000 ) (22,859,500,000 ) (71,537,500,000 ) Profit attributable to ordinary equity holders of the Parent Company 3,304,743,438,055 3,445,588,201,501 4,338,005,788,213 Adjustments: Interest expense on exchangeable bonds — 798,012,332 2,347,186,871 Adjusted profit for diluted earnings per share ￦ 3,304,743,438,055 ￦ 3,446,386,213,833 ￦ 4,340,352,975,084 37.2.2 Weighted average number of ordinary shares outstanding for diluted earnings per share 2019 2020 2021 (In number of shares) Weighted average number of ordinary shares outstanding 391,131,683 389,634,335 389,634,335 Adjustment: Stock grants 2,890,513 3,416,737 3,945,208 Exchangeable bonds — 1,707,650 5,000,000 Adjusted weighted average number of ordinary shares outstanding for diluted earnings per share 394,022,196 394,758,722 398,579,543 37.2.3 Diluted earnings per share 2019 2020 2021 (In Korean won and in number of shares) Adjusted profit for diluted earnings per share ￦ 3,304,743,438,055 ￦ 3,446,386,213,833 ￦ 4,340,352,975,084 Adjusted weighted average number of ordinary shares outstanding for diluted earnings per share 394,022,196 394,758,722 398,579,543 Diluted earnings per share ￦ 8,387 ￦ 8,730 ￦ 10,890

Insurance Contracts

Insurance Contracts	12 Months Ended
	Dec. 31, 2021
Disclosure of types of insurance contracts [abstract]
Insurance Contracts	38. Insurance Contracts 38.1 Insurance Assets 38.1.1 Details of deferred acquisition costs included in other assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Non-life ￦ 965,683 ￦ 1,230,375 Life insurance 205,289 345,831 ￦ 1,170,972 ￦ 1,576,206 38.1.2 Changes in deferred acquisition costs included in other assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Increase Amortization Ending (In millions of Korean won) Non-life ￦ 786,626 ￦ 872,811 ￦ (693,754 ) ￦ 965,683 Life insuranc e 134,739 144,429 (73,879 ) 205,289 ￦ 921,365 ￦ 1,017,240 ￦ (767,633 ) ￦ 1,170,972 2021 Beginning Increase Amortization Ending (In millions of Korean won) Non-life ￦ 965,683 ￦ 965,735 ￦ (701,043 ) ￦ 1,230,375 Life insurance 205,289 258,653 (118,111 ) 345,831 ￦ 1,170,972 ￦ 1,224,388 ￦ (819,154 ) ￦ 1,576,206 38.1.3 Details of reinsurance assets included in other assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Non-life Reserve for outstanding claims: General insurance ￦ 732,579 ￦ 879,936 Automobile insurance 14,916 16,989 Long-term insurance 156,234 178,531 Unearned premium reserve: General insurance 285,634 262,020 Automobile insurance 10,870 5,575 1,200,233 1,343,051 Life insurance Reserve for outstanding claims 2,081 2,169 Unearned premium reserve 951 985 3,032 3,154 Others Reserve for outstanding claims 2,427 2,103 Unearned premium reserve 895 620 3,322 2,723 Total reinsurance assets 1,206,587 1,348,928 Less: Allowances for impairment losses (879 ) (436 ) ￦ 1,205,708 ￦ 1,348,492 38.1.4 Changes in reinsurance assets included in other assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Net increase Business combination Ending (In millions of Korean won) Non-life insurance Reserve for outstanding claims: General insurance ￦ 361,065 ￦ 371,514 ￦ — ￦ 732,579 Automobile insurance 16,555 (1,639 ) — 14,916 Long-term insurance 130,758 25,476 — 156,234 Unearned premium reserve: General insurance 208,820 76,814 — 285,634 Automobile insurance 19,952 (9,082 ) — 10,870 737,150 463,083 — 1,200,233 Life insurance Reserve for outstanding claims 1,639 (564 ) 1,006 2,081 Unearned premium reserve 408 (27 ) 570 951 2,047 (591 ) 1,576 3,032 Others Reserve for outstanding claims 2,563 (136 ) — 2,427 Unearned premium reserve 844 51 — 895 3,407 (85 ) — 3,322 Total reinsurance assets 742,604 462,407 1,576 1,206,587 Less: Allowances for impairment losses (1,953 ) 1,074 — (879 ) ￦ 740,651 ￦ 463,481 ￦ 1,576 ￦ 1,205,708 2021 Beginning Net increase Ending (In millions of Korean won) Non-life insurance Reserve for outstanding claims: General insurance ￦ 732,579 ￦ 147,357 ￦ 879,936 Automobile insurance 14,916 2,073 16,989 Long-term insurance 156,234 22,297 178,531 Unearned premium reserve: General insurance 285,634 (23,614 ) 262,020 Automobile insurance 10,870 (5,295 ) 5,575 1,200,233 142,818 1,343,051 Life insurance Reserve for outstanding claims 2,081 88 2,169 Unearned premium reserve 951 34 985 3,032 122 3,154 Others Reserve for outstanding claims 2,427 (324 ) 2,103 Unearned premium reserve 895 (275 ) 620 3,322 (599 ) 2,723 Total reinsurance assets 1,206,587 142,341 1,348,928 Less: Allowances for impairment losses (879 ) 443 (436 ) ￦ 1,205,708 ￦ 142,784 ￦ 1,348,492 38.2 Insurance Liabilities 38.2.1 Details of insurance liabilities by insurance type as of December 31, 2020 and 2021, are as follows: December 31, 2020 Non-life insurance Life insurance Others Total (In millions of Korean won) Premium reserve* ￦ 24,990,530 ￦ 23,264,955 ￦ — ￦ 48,255,485 Reserve for outstanding claims 2,885,006 252,883 2,426 3,140,315 Unearned premium reserve 1,859,367 9,450 896 1,869,713 Reserve for dividend to policyholders 129,660 41,024 — 170,684 Reserve for distribution of earnings to policyholders 51,292 5,009 — 56,301 Reserve for loss compensation on participating insurance 20,090 6,818 — 26,908 Guarantee reserve — 895,890 — 895,890 ￦ 29,935,945 ￦ 24,476,029 ￦ 3,322 ￦ 54,415,296 December 31, 2021 Non-life insurance Life insurance Others Total (In millions of Korean won) Premium reserve* ￦ 26,086,004 ￦ 24,363,509 ￦ — ￦ 50,449,513 Reserve for outstanding claims 3,378,427 259,848 2,102 3,640,377 Unearned premium reserve 1,909,327 9,358 622 1,919,307 Reserve for dividend to policyholders 122,025 40,960 — 162,985 Reserve for distribution of earnings to policyholders 63,093 4,857 — 67,950 Reserve for loss compensation on participating insurance 24,790 6,108 — 30,898 Guarantee reserve — 894,906 — 894,906 ￦ 31,583,666 ￦ 25,579,546 ￦ 2,724 ￦ 57,165,936 * Includes negative VOBA amounting to ￦2,698,010 million and ￦2,390,985 million as of December 31, 2020 and 2021, respectively. 38.2.2 Changes in insurance liabilities for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Net increase 1 Business combination Ending (In millions of Korean won) Non-life insurance General insurance ￦ 1,064,913 ￦ 503,828 ￦ — ￦ 1,568,741 Automobile insurance 1,623,846 274,026 — 1,897,872 Long-term insurance 25,006,078 1,356,401 — 26,362,479 Long-term investment contract 108,938 (2,085 ) — 106,853 Life insurance Pure endowment insurance 5,236,128 318,109 2,016,112 7,570,349 Death insurance 642,963 404,456 14,658,632 15,706,051 Endowment insurance 1,270,855 (156,688 ) 74,132 1,188,299 Group insurance and others 2 9,555 (2,238 ) 4,013 11,330 Others 3,407 (85 ) — 3,322 ￦ 34,966,683 ￦ 2,695,724 ￦ 16,752,889 ￦ 54,415,296 2021 Beginning Net increase 1 Ending (In millions of Korean won) Non-life insurance General insurance ￦ 1,568,741 ￦ 222,543 ￦ 1,791,284 Automobile insurance 1,897,872 127,693 2,025,565 Long-term insurance 26,362,479 1,373,257 27,735,736 Long-term investment contract 106,853 (75,772 ) 31,081 Life insurance Pure endowment insurance 7,570,349 436,999 8,007,348 Death insurance 15,706,051 810,366 16,516,417 Endowment insurance 1,188,299 (142,962 ) 1,045,337 Group insurance and others 2 11,330 (886 ) 10,444 Others 3,322 (598 ) 2,724 ￦ 54,415,296 ￦ 2,750,640 ￦ 57,165,936 1 Includes exchange differences effect and decrease in liabilities related to investment contracts. 2 Includes reserve for distribution of earnings to policyholders and reserve for loss compensation on participating insurance. 38.3 Liability Adequacy Test According to the revision of the Detailed Regulations on Supervision of Insurance Business, the criteria for the insurance liability adequacy test were changed, and the Group accounted for the change as a change in accounting policy because it provided reliable and more relevant information about current estimates of future cash flows. This change in accounting policy has no effect on the consolidated financial statements, but comparative notes have been restated. 38.3.1 KB Insurance Co., Ltd. Assumptions and calculation basis for the insurance liability adequacy test of KB Insurance Co., Ltd. as of December 31, 2020 and 2021, are as follows: Assumptions (%) Calculation basis December 31, December 31, 2021 Long-term insurance Discount rate -3.98~23.96 -3.39~19.54 Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by director of the Financial Supervisory Service Expense ratio 6.46 6.25 Calculated using future expense plan based on the recent one-year experience statistics Lapse ratio 1.48~35.44 1.49~35.98 Calculated based on the recent five-year experience statistics Risk ratio 11.9~1,055.2 7.4~1,143.8 Calculated by ratio of insurance claim payments to risk premiums based on the recent seven-year experience statistics General insurance Lapse ratio 1.1 0.9 Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years Assumptions (%) Calculation basis December 31, December 31, 2021 Sales cost ratio 6.5 6.3 Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums) Maintenance cost ratio 10.7 10.5 Ratio of maintenance cost to earned premiums by type of contracts for the preceding year Claim survey cost ratio 4.7 4.7 Ratio of claim survey cost to insurance claim payments by type of contracts for the preceding three years Loss ratio 71.0 78.5 Ratio of final loss incurred to earned premiums by type of contracts for the preceding five years Automobile insurance Lapse ratio 4.6 4.7 Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years Sales cost ratio 8.1 7.6 Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums) Maintenance cost ratio 9.0 8.8 Ratio of maintenance cost to earned premiums by type of collaterals for the preceding year Claim survey cost ratio 8.4 8.1 Ratio of claim survey cost to insurance claim payments by type of collaterals for the preceding three years Loss ratio 78.2 78.2 Ratio of final loss incurred to earned premiums by type of collaterals for the preceding five years Results of the insurance liability adequacy test of KB Insurance Co., Ltd. as of December 31, 2020 and 2021, are as follows: December 31, 2020 Recognized Estimated adequate Surplus (shortfall) (In millions of Korean won) General insurance ￦ 461,227 ￦ 391,040 ￦ 70,187 Automobile insurance 1,363,104 1,290,439 72,665 Long-term insurance 20,892,077 13,671,990 7,220,087 ￦ 22,716,408 ￦ 15,353,469 ￦ 7,362,939 December 31, 2021 Recognized liabilities* Estimated adequate Surplus (shortfall) (In millions of Korean won) General insurance ￦ 465,812 ￦ 437,555 ￦ 28,257 Automobile insurance 1,401,462 1,322,026 79,436 Long-term insurance 21,812,939 14,277,162 7,535,777 ￦23,680,213 ￦ 16,036,743 ￦ 7,643,470 * In the case of long-term insurance, premium reserve and unearned premium reserve are recognized; the premium reserve is the amount of subtracting deferred acquisition costs and insurance contract loans from the net insurance premium reserve in accordance with Article 6-3 of the Regulations on Supervision of Insurance Business. As a result of the liability adequacy test, the Group did not set additional reserve as it shows net surplus. As such, there was no amount recorded as a result of the liability adequacy test as of December 31, 2021. 38.3.2 KB Life Insurance Co., Ltd. Assumptions and calculation basis for the insurance liability adequacy test of KB Life Insurance Co., Ltd. as of December 31, 2020 and 2021, are as follows: Assumptions (%) Calculation basis December 31, 2020 December 31, 2021 Lapse ratio 0~65.50 0~65.57 Ratio of canceled premiums to premiums by product group, method of payment, channel, and elapsed period, based on the recent five-year experience statistics Loss ratio 24~156 22~162 Ratio of number of accidents to the number of holding contracts, by collateral, gender, and elapsed period, based on the recent seven-year experience statistics Discount rate -3.62~23.48 -3.39~19.54 Estimated investment yield based on the interest rate scenario provided by the Financial Supervisory Service adjusted by risk spread Indirect costs included in administration expenses were calculated by applying the unit cost based on the experience statistics of the actual executed costs over the past year according to the expense allocations standard set by the Detailed Regulations on Supervision of Insurance Business. Direct costs such as acquisition cost were calculated based on estimates of future expense according to the Group’s internal policies such as solicitation commission policy. The insurance liability adequacy test of KB Life Insurance Co., Ltd. is performed by contract type such as interest rate type and dividend type. Results of the insurance liability adequacy test as of December 31, 2020 and 2021, are as follows: December 31, 2020 Recognized liabilities Estimated adequate Surplus (shortfall) (In millions of Korean won) Fixed interest type Participating ￦ 30,447 ￦ 57,162 ￦ (26,715 ) Non-participating 395,766 66,380 329,386 Variable interest type Participating 970,376 1,010,383 (40,007 ) Non-participating 5,508,172 5,275,939 232,233 Variable type (26,685 ) (125,530 ) 98,845 Total ￦ 6,878,076 ￦ 6,284,334 ￦ 593,742 December 31, 2021 Recognized liabilities Estimated adequate Surplus (shortfall) (In millions of Korean won) Fixed interest type Participating ￦ 30,828 ￦ 51,443 ￦ (20,615 ) Non-participating 664,569 5,876 658,693 Variable interest type Participating 896,754 913,067 (16,313 ) Non-participating 5,754,214 5,263,775 490,439 Variable type (7,822 ) (101,418 ) 93,596 ￦ 7,338,543 ￦ 6,132,743 ￦ 1,205,800 As a result of the liability adequacy test, the Group did not set additional reserve as it shows net surplus. As such, there was no amount recorded as a result of the liability adequacy test as of December 31, 2021. 38.3.3 Prudential Life Insurance Company of Korea Ltd. Assumptions and calculation basis for the insurance liability adequacy test of Prudential Life Insurance Company of Korea Ltd. as of December 31, 2020 and 2021, are as follows: Assumptions (%) December 31, 2020 December 31, 2021 Calculation basis Discount rate -3.98~23.96 -3.39~19.54 Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by the Financial Supervisory Service Lapse ratio 2~28 1~26 Calculated based on the amount of insurance coverage by elapsed period based on the recent five-year experience statistics Risk ratio 21~312 28~545 Calculated by ratio of insurance claim payments to risk premiums by elapsed period based on the recent five-year experience statistics The insurance liability adequacy test of Prudential Life Insurance Company of Korea Ltd. is performed by contract type such as interest rate type and dividend type. Results of the insurance liability adequacy test as of December 31, 2020 and 2021, are as follows: Surplus (shortfall) December 31, 2020 December 31, 2021 (In millions of Korean won) Fixed interest type Participating ￦ (14,701 ) ￦ (7,687 ) Non-participating (865,083 ) 787,200 Variable interest type Non-participating 100,825 128,963 Variable type 1,584,469 1,278,620 ￦ 805,510 ￦ 2,187,096 As a result of the liability adequacy test, the Group did not set additional reserve as it shows net surplus. As such, there was no amount recorded as a result of the liability adequacy test as of December 31, 2021. 38.4 Net Insurance Income Details of insurance income and insurance expenses for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Insurance income Premium income ￦ 11,173,367 ￦ 12,872,727 ￦ 14,684,383 Reinsurance income 850,871 823,500 990,437 Reversal of policy reserve 993 85 599 Separate account income 216,429 216,485 286,967 Income from changes in reinsurance assets 42,432 467,729 135,159 Other insurance income 33,090 6,114 10,313 12,317,182 14,386,640 16,107,858 Insurance expenses Insurance claims paid 5,046,772 5,264,829 5,777,899 Dividend expenses 9,902 11,661 14,038 Refunds of surrender value 2,870,543 3,286,150 4,032,209 Reinsurance expenses 1,018,007 1,127,304 1,163,056 Provision for policy reserve 1,547,264 2,709,903 2,761,735 Separate account expenses 139,810 113,703 112,180 Administration expenses 453,016 563,085 644,947 Amortization of deferred acquisition costs 679,279 767,633 819,154 Expenses from changes in reinsurance assets 314 163 — Claim survey expenses paid 52,123 58,873 60,234 Other insurance expenses 200,640 183,343 165,695 12,017,670 14,086,647 15,551,147 Net insurance income ￦ 299,512 ￦ 299,993 ￦ 556,711 38.5 Risk Management of KB Insurance Co., Ltd. 38.5.1 Overview of insurance risk Insurance risk is the risk that arises from a primary operation of insurance companies that is associated with underwriting of insurance contracts and payment of claims and is classified as insurance price risk and reserves risk. Insurance price risk is the risk of loss that might occur when the actual risk exceeds the expected risk ratio or expected expense ratio set at the time of calculating insurance premium, that is, the possibility of loss due to the differences between actual payment of claims and premiums received from policyholders. Reserve risk means the risk of not being able to cover actual claim payments in the future due to a lack of reserve accumulated at the time of assessment. 38.5.2 Purposes, policies, and procedures to manage risk arising from insurance contracts The risks associated with insurance contracts that the Group faces are insurance actuarial risk and underwriting risk. Each risk occurs due to insurance contract’s pricing and conditions of underwriting. In order to minimize the possibility of acquiring a bad contract, the Group has established and operated detailed underwriting guidelines and underwriting procedures by insurance type that specify detailed underwriting conditions according to the type of risk covered through pre-analysis of insured property. In addition, the Group is making efforts to reduce insurance actuarial risk by follow-up measures such as adjustments of premium rate, changes of sales conditions, termination of selling specific product, development of new product, and others through comparing and analyzing the expected risk level at the date of pricing and actual risk level after the acceptance. The Group has prepared a process to minimize management risk other than insurance actuarial risk and underwriting risk by operating a committee that shares opinions on underwriting policies and premium rate policies and decides important matters. In addition, by establishing a reinsurance operating strategy according to the reinsurance operating standards, the Group is preparing for the possibility of incurring high claim expenses at once due to unexpected catastrophic accidents while maintaining an appropriate holding level considering the solvency of the Group. The Group supports the protection and stable interests of policyholders, and comprehensively manages risks to maximize corporate value in the mid to long term. 38.5.3 Exposure to insurance price risk According to Risk Based Capital (“RBC”) standard, exposure to insurance price risk is measured as the risk retained premium for all insurance contracts based on the track record for one year up to reference date of calculation. The risk retained premium is measured by adding assumed risk reinsurance premium to direct risk premium and deducting ceded risk reinsurance premium. The Group’s exposure to insurance price risk as of December 31, 2020 and 2021, as follows: December 31, 2020 Direct risk premium Assumed risk Ceded risk Total (In millions of Korean won) General ￦ 1,088,791 ￦ 79,429 ￦ (663,750 ) ￦ 504,470 Automobile 2,491,412 — (21,433 ) 2,469,979 Long-term 2,803,532 — (415,439 ) 2,388,093 ￦ 6,383,735 ￦ 79,429 ￦ (1,100,622 ) ￦ 5,362,542 December 31, 2021 Direct risk premium Assumed risk Ceded risk Total (In millions of Korean won) General ￦ 1,161,427 ￦ 93,191 ￦ (630,231 ) ￦ 624,387 Automobile 2,538,277 — (13,683 ) 2,524,594 Long-term 3,128,821 — (462,261 ) 2,666,560 ￦ 6,828,525 ￦ 93,191 ￦ (1,106,175 ) ￦ 5,815,541 38.5.4 Concentration of insurance risk The Group is selling various insurance contracts such as general non-life insurances (fire, maritime, injury, technology, liability, package, title, guarantee, and other special type insurances), automobile insurances (for private use, for business use, for commercial use, bicycle, and others), long-term insurances (long-term non-life, property damage, injury, driver, savings, illness, nursing, and pension), and others. The Group’s risk is distributed through reinsurance, joint acceptance, and sales of diversified insurance products. In addition, insurances such as storm and flood insurance, which have a very low probability of occurrence but cover severe levels of risk, are controlled through acceptance limit and joint acquisition. 38.5.5 Claims development tables The Group verifies and evaluates the adequacy of reserve for outstanding claims for general, automobile, and long-term insurance with two or more methods, including paid loss development trend and incurred loss development trend. If the individually estimated claims are insufficient, the Group recognizes additional reserves. Claims development tables as of December 31, 2020 and 2021, are as follows: <2020> General Insurance Development year Accident year After 1 year After 2 years After 3 years After 4 years After 5 years (In millions of Korean won) Estimate of gross ultimate claims (A) 2016.1.1 ~ 2016.12.31 ￦ 145,618 ￦ 167,818 ￦ 171,206 ￦ 178,265 ￦ 180,160 2017.1.1 ~ 2017.12.31 168,409 200,699 204,368 206,201 — 2018.1.1 ~ 2018.12.31 200,968 241,474 246,871 — — 2019.1.1 ~ 2019.12.31 219,881 263,849 — — — 2020.1.1 ~ 2020.12.31 232,622 — — — — 967,498 873,840 622,445 384,466 180,160 Gross cumulative claim payments (B) 2016.1.1 ~ 2016.12.31 108,098 151,282 162,059 170,353 175,063 2017.1.1 ~ 2017.12.31 132,430 184,333 193,780 199,225 — 2018.1.1 ~ 2018.12.31 153,770 217,955 235,900 — — 2019.1.1 ~ 2019.12.31 185,645 246,397 — — — 2020.1.1 ~ 2020.12.31 167,129 — — — — 747,072 799,967 591,739 369,578 175,063 Difference (A-B) ￦ 220,426 ￦ 73,873 ￦ 30,706 ￦ 14,888 ￦ 5,097 Automobile Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2014.1.1 ~ 2014.12.31 ￦ 1,174,611 ￦ 1,193,833 ￦ 1,205,524 ￦ 1,212,025 ￦ 1,212,162 ￦ 1,214,524 ￦ 1,217,006 2015.1.1 ~ 2015.12.31 1,227,106 1,245,780 1,256,058 1,263,044 1,267,142 1,271,001 — 2016.1.1 ~ 2016.12.31 1,276,939 1,281,381 1,287,728 1,294,735 1,299,964 — — 2017.1.1 ~ 2017.12.31 1,342,998 1,348,828 1,358,867 1,368,016 — — — 2018.1.1 ~ 2018.12.31 1,468,784 1,471,807 1,481,509 — — — — 2019.1.1 ~ 2019.12.31 1,591,793 1,620,609 — — — — — 2020.1.1 ~ 2020.12.31 1,624,341 — — — — — — 9,706,572 8,162,238 6,589,686 5,137,820 3,779,268 2,485,525 1,217,006 Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Gross cumulative claim payments (B) 2014.1.1 ~ 2014.12.31 969,211 1,150,462 1,180,953 1,196,387 1,204,580 1,208,421 1,210,632 2015.1.1 ~ 2015.12.31 1,020,975 1,198,241 1,228,357 1,245,779 1,254,187 1,261,995 — 2016.1.1 ~ 2016.12.31 1,052,830 1,235,656 1,264,651 1,282,346 1,288,754 — — 2017.1.1 ~ 2017.12.31 1,104,158 1,306,235 1,335,962 1,350,174 — — — 2018.1.1 ~ 2018.12.31 1,224,820 1,428,973 1,456,532 — — — — 2019.1.1 ~ 2019.12.31 1,332,849 1,570,194 — — — — — 2020.1.1 ~ 2020.12.31 1,353,799 — — — — — — 8,058,642 7,889,761 6,466,455 5,074,686 3,747,521 2,470,416 1,210,632 Difference (A-B) ￦ 1,647,930 ￦ 272,477 ￦ 123,231 ￦ 63,134 ￦ 31,747 ￦ 15,109 ￦ 6,374 Long-term Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2014.1.1 ~ 2014.12.31 ￦ 789,088 ￦ 1,083,049 ￦ 1,114,820 ￦ 1,119,206 ￦ 1,122,191 ￦ 1,123,240 ￦ 1,124,628 2015.1.1 ~ 2015.12.31 885,476 1,219,394 1,256,051 1,266,881 1,270,967 1,273,615 — 2016.1.1 ~ 2016.12.31 1,064,744 1,437,573 1,485,839 1,500,403 1,506,889 — — 2017.1.1 ~ 2017.12.31 1,184,224 1,614,903 1,670,929 1,689,768 — — — 2018.1.1 ~ 2018.12.31 1,372,706 1,881,046 1,941,497 — — — — 2019.1.1 ~ 2019.12.31 1,626,481 2,229,830 — — — — — 2020.1.1 ~ 2020.12.31 1,818,316 — — — — — — 8,741,035 9,465,795 7,469,136 5,576,258 3,900,047 2,396,855 1,124,628 Gross cumulative claim payments (B) 2014.1.1 ~ 2014.12.31 744,944 1,065,792 1,104,468 1,114,341 1,119,531 1,122,378 1,123,868 2015.1.1 ~ 2015.12.31 836,471 1,205,130 1,248,475 1,262,528 1,269,557 1,272,648 — 2016.1.1 ~ 2016.12.31 1,017,243 1,424,948 1,477,415 1,496,556 1,503,841 — — 2017.1.1 ~ 2017.12.31 1,130,868 1,599,227 1,662,978 1,683,997 — — — 2018.1.1 ~ 2018.12.31 1,319,613 1,868,434 1,933,543 — — — — 2019.1.1 ~ 2019.12.31 1,574,696 2,211,717 — — — — — 2020.1.1 ~ 2020.12.31 1,749,647 — — — — — — 8,373,482 9,375,248 7,426,879 5,557,422 3,892,929 2,395,026 1,123,868 Difference (A-B) ￦ 367,553 ￦ 90,547 ￦ 42,257 ￦ 18,836 ￦ 7,118 ￦ 1,829 ￦ 760 <2021> General Insurance Development year Accident year After 1 year After 2 years After 3 years After 4 years After 5 years (In millions of Korean won) Estimate of gross ultimate claims (A) 2017.1.1 ~ 2017.12.31 ￦ 169,234 ￦ 201,406 ￦ 205,075 ￦ 206,856 ￦ 207,252 2018.1.1 ~ 2018.12.31 200,968 241,471 246,499 250,083 — 2019.1.1 ~ 2019.12.31 219,419 263,105 267,687 — — 2020.1.1 ~ 2020.12.31 232,622 273,531 — — — 2021.1.1 ~ 2021.12.31 290,480 — — — — 1,112,723 979,513 719,261 456,939 207,252 Gross cumulative claim payments (B) 2017.1.1 ~ 2017.12.31 133,254 185,107 194,511 199,926 202,548 2018.1.1 ~ 2018.12.31 153,770 217,955 235,900 240,171 — 2019.1.1 ~ 2019.12.31 185,645 246,397 258,465 — — 2020.1.1 ~ 2020.12.31 167,129 244,074 — — — 2021.1.1 ~ 2021.12.31 236,265 — — — — 876,063 893,533 688,876 440,097 202,548 Difference(A-B) ￦ 236,660 ￦ 85,980 ￦ 30,385 ￦ 16,842 ￦ 4,704 Automobile Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2015.1.1 ~ 2015.12.31 ￦ 1,227,107 ￦ 1,245,781 ￦ 1,256,059 ￦ 1,263,044 ￦ 1,267,142 ￦ 1,271,000 ￦ 1,282,673 2016.1.1 ~ 2016.12.31 1,276,939 1,281,381 1,287,728 1,294,735 1,299,964 1,309,221 — 2017.1.1 ~ 2017.12.31 1,342,998 1,348,828 1,358,867 1,368,016 1,371,619 — — 2018.1.1 ~ 2018.12.31 1,468,784 1,471,807 1,481,509 1,488,890 — — — 2019.1.1 ~ 2019.12.31 1,591,793 1,620,609 1,635,704 — — — — 2020.1.1 ~ 2020.12.31 1,624,341 1,632,626 — — — — — 2021.1.1 ~ 2021.12.31 1,750,508 — — — — — — 10,282,470 8,601,032 7,019,867 5,414,685 3,938,725 2,580,221 1,282,673 Gross cumulative claim payments(B) 2015.1.1 ~ 2015.12.31 1,020,975 1,198,240 1,228,357 1,245,780 1,254,186 1,261,995 1,264,247 2016.1.1 ~ 2016.12.31 1,052,830 1,235,656 1,264,651 1,282,346 1,288,754 1,291,380 — 2017.1.1 ~ 2017.12.31 1,104,158 1,306,235 1,335,962 1,350,174 1,357,903 — — 2018.1.1 ~ 2018.12.31 1,224,820 1,428,973 1,456,532 1,471,379 — — — 2019.1.1 ~ 2019.12.31 1,332,849 1,570,194 1,598,956 — — — — 2020.1.1 ~ 2020.12.31 1,353,799 1,570,730 — — — — — 2021.1.1 ~ 2021.12.31 1,445,877 — — — — — — 8,535,308 8,310,028 6,884,458 5,349,679 3,900,843 2,553,375 1,264,247 Difference(A-B) ￦ 1,747,162 ￦ 291,004 ￦ 135,409 ￦ 65,006 ￦ 37,882 ￦ 26,846 ￦ 18,426 Long-term Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2015.1.1 ~ 2015.12.31 ￦ 885,476 ￦ 1,219,394 ￦ 1,256,051 ￦ 1,266,881 ￦ 1,270,967 ￦ 1,273,615 ￦ 1,275,520 2016.1.1 ~ 2016.12.31 1,064,744 1,437,574 1,485,839 1,500,403 1,506,889 1,510,197 — 2017.1.1 ~ 2017.12.31 1,184,224 1,614,903 1,670,929 1,689,768 1,695,477 — — 2018.1.1 ~ 2018.12.31 1,372,706 1,881,046 1,941,497 1,965,983 — — — 2019.1.1 ~ 2019.12.31 1,626,481 2,229,830 2,297,861 — — — — 2020.1.1 ~ 2020.12.31 1,818,316 2,442,633 — — — — — 2021.1.1 ~ 2021.12.31 2,124,582 — — — — — — 10,076,529 10,825,380 8,652,177 6,423,035 4,473,333 2,783,812 1,275,520 Gross cumulative claim payments(B) 2015.1.1 ~ 2015.12.31 836,472 1,205,130 1,248,475 1,262,528 1,269,557 1,272,648 1,274,908 2016.1.1 ~ 2016.12.31 1,017,243 1,424,948 1,477,415 1,496,556 1,503,841 1,507,284 — 2017.1.1 ~ 2017.12.31 1,130,868 1,599,227 1,662,978 1,683,997 1,692,323 — — 2018.1.1 ~ 2018.12.31 1,319,613 1,868,434 1,933,543 1,958,256 — — — 2019.1.1 ~ 2019.12.31 1,574,696 2,211,717 2,288,023 — — — — 2020.1.1 ~ 2020.12.31 1,749,647 2,426,351 — — — — — 2021.1.1 ~ 2021.12.31 2,057,154 — — — — — — 9,685,693 10,735,807 8,610,434 6,401,337 4,465,721 2,779,932 1,274,908 Difference(A-B) ￦ 390,836 ￦ 89,573 ￦ 41,743 ￦ 21,698 ￦ 7,612 ￦ 3,880 ￦ 612 38.5.6 Sensitivity analysis of insurance risk The Group manages insurance risk by performing sensitivity analysis based on lapse ratio, loss ratio, expense ratio, discount rate, and others which are considered to have significant influence on future cash flow, timing, and uncertainty. Sensitivity analysis of insurance liabilities was conducted only in the unfavorable direction where additional insurance liabilities could be reserved as the surplus was sufficient as a result of the insurance liability adequacy test. December 31, 2020 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 351,205 ￦ — ￦ — ￦ — Loss ratio +10 % 5,203,896 — — — Expense ratio +10 % 388,406 — — — Discount rate -0.5 %p 2,097,400 — — — December 31, 2021 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 337,969 ￦ — ￦ — ￦ — Loss ratio +10 % 6,065,429 — — — Expense ratio +10 % 503,132 — — — Discount rate -0.5 %p 1,985,421 — — — 38.5.7 Liquidity risk of insurance contracts Liquidity risk arising from insurance contracts arises from the increase in refunds at maturity caused by concentrations of maturity, the excessive increase in surrender values caused by unexpected mass cancelation, and the increase in payments of claims caused by major accidents. The Group manages payment of refunds at maturity by analyzing remaining maturity of insurance contracts. Maturity structure of premium reserve as of December 31, 2020 and 2021, as follows: December 31, 2020* Up to 1 year 1~5 years 5~10 years 10~20 years Over 20 years Total (In millions of Korean won) Long-term insurance non-participating: Fixed interest type ￦ 70,782 ￦ 191,570 ￦ 78,092 ￦ 51,216 ￦ 175,387 ￦ 567,047 Variable interest type 663,210 2,304,298 1,937,621 845,404 14,716,753 20,467,286 733,992 2,495,868 2,015,713 896,620 14,892,140 21,034,333 Annuity: Fixed interest type 5 717 2,203 3,817 738 7,480 Variable interest type 242 83,568 390,516 1,301,383 2,195,244 3,970,953 247 84,285 392,719 1,305,200 2,195,982 3,978,433 Total: Fixed interest type 70,787 192,287 80,295 55,033 176,125 574,527 Variable interest type 663,452 2,387,866 2,328,137 2,146,787 16,911,997 24,438,239 ￦ 734,239 ￦ 2,580,153 ￦ 2,408,432 ￦ 2,201,820 ￦ 17,088,122 ￦ 25,012,766 December 31, 2021* Up to 1 year 1~5 years 5~10 years 10~20 years Over 20 years Total (In millions of Korean won) Long-term insurance non-participating: Fixed interest type ￦ 121,988 ￦ 64,730 ￦ 77,880 ￦ 59,042 ￦ 324,259 ￦ 647,899 Variable interest type 959,348 1,958,267 1,536,690 919,726 16,123,312 21,497,343 1,081,336 2,022,997 1,614,570 978,768 16,447,571 22,145,242 Annuity: Fixed interest type — 820 2,134 3,813 532 7,299 Variable interest type 252 103,419 407,556 1,324,916 2,121,076 3,957,219 252 104,239 409,690 1,328,729 2,121,608 3,964,518 Total: Fixed interest type 121,988 65,550 80,014 62,855 324,791 655,198 Variable interest type 959,600 2,061,686 1,944,246 2,244,642 18,244,388 25,454,562 ￦ 1,081,588 ￦ 2,127,236 ￦ 2,024,260 ￦ 2,307,497 ￦ 18,569,179 ￦ 26,109,760 * Includes long-term investment contracts liabilities classified as investment contracts amounting to ￦ 106,853 31,081 38.5.8 Credit risk of insurance contract Credit risk of an insurance contract refers to economic losses in which the reinsurer, the counterparty, is unable to fulfil its contract obligations due to a decline in credit ratings or default or others. Through an internal review, only the insurers rated BBB- or higher of S&P rating or corresponding rating are selected as reinsurance companies. Concentration and credit ratings for top three reinsurance companies as of December 31, 2021, are as follows: Reinsurance company Ratio Credit rating KOREAN RE 38.65 % AA MUNICH RE 5.75 % AAA ALLIANZGLOBAL 5.67 % AAA Exposures to credit risk related to reinsurance as of December 31, 2020 and 2021 as follows: December 31, December 31, (In millions of Korean won) Reinsurance assets 1 ￦ 1,199,354 ￦ 1,342,615 Receivables from reinsurers 2 252,064 377,619 ￦ 1,451,418 ￦ 1,720,234 1 Net carrying amount after impairment losses 2 Net carrying amount after allowances for credit losses 38.5.9 Interest rate risk of insurance contract Interest rate risk exposure from the Group’s insurance contracts is the risk of unexpected losses due to the fluctuations of net interest income or net assets arising from changes in interest rate and it is managed to minimize unexpected losses. The Group calculates exposure to interest-bearing assets and interest-bearing liabilities for long-term, non-life insurance contracts. Liabilities exposure is premium reserve less surrender charge plus unearned premium reserve. Assets exposure is interest-bearing assets and assets that generate only fees without interest income a

Statement Of Cash Flows

Statement Of Cash Flows	12 Months Ended
	Dec. 31, 2021
Statement of cash flows [abstract]
Statement Of Cash Flows	39. Statement of Cash Flows 39.1 Details of cash and cash equivalents as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Cash ￦ 2,560,970 ￦ 2,496,941 Checks issued by other banks 327,781 150,047 Due from the Bank of Korea 12,340,532 17,579,643 Due from other financial institutions 10,379,559 10,782,743 25,608,842 31,009,374 Due from financial institutions measured at fair value through profit or loss 100,094 200,743 25,708,936 31,210,117 Deduction: Restricted due from financial institutions (15,303,363 ) (20,754,706 ) Due from financial institutions with original maturities over three months (1,720,481 ) (1,346,951 ) (17,023,844 ) (22,101,657 ) ￦ 8,685,092 ￦ 9,108,460 39.2 Significant non-cash transactions for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Write-offs of loans ￦ 1,188,584 ￦ 1,283,071 ￦ 1,086,296 Changes in financial investments due to debt-for-equity swap 104,815 13,820 327 Changes in accumulated other comprehensive income from valuation of financial instruments at fair value through other comprehensive income 35,490 496,159 507,175 Changes in accumulated other comprehensive income from valuation of investments in associates 7,695 (6,978 ) 165 Reclassification to assets of a disposal group held for sale — — 171,749 39.3 Cash inflows and outflows from income tax, interest, and dividends for the years ended December 31, 2019, 2020 and 2021, are as follows: Activities 2019 2020 2021 (In millions of Korean won) Income tax paid Operating ￦ 1,223,084 ￦ 1,119,252 ￦ 1,586,750 Interest received Operating 14,936,705 14,986,532 15,152,796 Interest paid Operating 5,365,595 5,266,158 4,062,469 Dividends received Operating 185,846 187,699 290,089 Dividends paid Financing 766,249 883,952 1,053,416 39.4 Changes in liabilities arising from financing activities for the years ended December 31, 2020 and 2021, are as follows: 2020 Non-cash changes Beginning Net cash flows Acquisition Exchange Changes in fair value Subsidiaries Others Ending (In millions of Korean won) Derivatives held for hedging * ￦ 187,101 ￦ (16,202 ) ￦ — ￦ (102,347 ) ￦ 10,553 ￦ 1,166 ￦ (137,467 ) ￦ (57,196 ) Borrowings 88,754,443 22,627,875 — (217,461 ) (591,619 ) 2,131,517 (116,912 ) 112,587,843 Due to trust accounts 5,216,460 2,326,495 — — — — — 7,542,955 Non-controlling interests 585,407 (25,658 ) — 250,904 — — 47,130 857,783 Others 868,556 (63,065 ) 236,860 11 — — (23,287 ) 1,019,075 ￦ 95,611,967 ￦ 24,849,445 ￦ 236,860 ￦ (68,893 ) ￦ (581,066 ) ￦ 2,132,683 ￦ (230,536 ) ￦ 121,950,460 2021 Non-cash changes Beginning Net cash flows Acquisition Exchange Changes in fair value Subsidiaries Others Ending (In millions of Korean won) Derivatives held for hedging * ￦ (57,196 ) ￦ 5,870 ￦ — ￦ 246,352 ￦ (70,225 ) ￦ — ￦ (150,084 ) ￦ (25,283 ) Borrowings 112,587,843 11,579,036 — 630,913 (115,440 ) (329,512 ) (10,278 ) 124,342,562 Due to trust accounts 7,542,955 (509,106 ) — — — — — 7,033,849 Non-controlling interests 857,783 (24,145 ) — — — 1,994 (2,294 ) 833,338 Others 1,019,075 (319,074 ) 166,336 119 — — 119,398 985,854 ￦ 121,950,460 ￦ 10,732,581 ￦ 166,336 ￦ 877,384 ￦ (185,665 ) ￦ (327,518 ) ￦ (43,258 ) ￦ 133,170,320 * Derivatives held for hedging purposes are the net amount after offsetting liabilities and assets. 39.5 The net cash flow associated with the changes in the subsidiaries for the years ended December 31, 2020 and 2021 are 1,951,245 million of cash outflow and 374,992 million of cash inflow, respectively.

Contingent Liabilities And Comm

Contingent Liabilities And Commitments	12 Months Ended
	Dec. 31, 2021
Disclosure of contingent liabilities [abstract]
Contingent Liabilities And Commitments	40. Contingent Liabilities and Commitments 40.1 Details of acceptances and guarantees as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Confirmed acceptances and guarantees Confirmed acceptances and guarantees in Korean won: Acceptances and guarantees for KB purchasing loan ￦ 144,457 ￦ 136,914 Others 1,048,848 817,470 1,193,305 954,384 Confirmed acceptances and guarantees in foreign currencies: Acceptances of letter of credit 221,422 523,037 Letter of guarantees 45,693 83,089 Bid bond 72,037 18,874 Performance bond 703,826 855,247 Refund guarantees 801,445 874,173 Others 3,072,099 2,505,353 4,916,522 4,859,773 Financial guarantee contracts: Acceptances and guarantees for issuance of debentures 10,040 5,040 Acceptances and guarantees for mortgage 89,302 51,053 Overseas debt guarantees 410,470 428,109 International financing guarantees in foreign currencies 197,097 132,114 Others 50,950 50,950 757,859 667,266 6,867,686 6,481,423 Unconfirmed acceptances and guarantees Guarantees of letter of credit 2,094,989 3,551,767 Refund guarantees 344,112 833,765 2,439,101 4,385,532 ￦ 9,306,787 ￦ 10,866,955 40.2 Credit qualities of acceptances and guarantees as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit Total Non-impaired Impaired (In millions of Korean won) Confirmed acceptances and guarantees Grade 1 ￦ 4,377,798 ￦ 1,119 ￦ — ￦ 4,378,917 Grade 2 2,269,455 47,438 — 2,316,893 Grade 3 27,588 85,321 — 112,909 Grade 4 14,925 33,440 501 48,866 Grade 5 — 453 9,648 10,101 6,689,766 167,771 10,149 6,867,686 Unconfirmed acceptances and guarantees Grade 1 1,422,528 771 — 1,423,299 Grade 2 912,209 28,506 — 940,715 Grade 3 11,399 23,069 — 34,468 Grade 4 2,369 29,934 — 32,303 Grade 5 — 589 7,727 8,316 2,348,505 82,869 7,727 2,439,101 ￦ 9,038,271 ￦ 250,640 ￦ 17,876 ￦ 9,306,787 December 31, 2021 12-month Lifetime expected credit Total Non-impaired Impaired (In millions of Korean won) Confirmed acceptances and guarantees Grade 1 ￦ 4,532,747 ￦ 838 ￦ — ￦ 4,533,585 Grade 2 1,594,714 32,567 — 1,627,281 Grade 3 105,691 46,174 — 151,865 Grade 4 7,722 149,785 214 157,721 Grade 5 — 774 10,197 10,971 6,240,874 230,138 10,411 6,481,423 Unconfirmed acceptances and guarantees Grade 1 3,083,636 3,391 — 3,087,027 Grade 2 998,204 39,224 — 1,037,428 Grade 3 12,039 34,797 — 46,836 Grade 4 11,925 195,794 — 207,719 Grade 5 — 138 6,384 6,522 4,105,804 273,344 6,384 4,385,532 ￦ 10,346,678 ￦ 503,482 ￦ 16,795 ￦ 10,866,955 40.3 Classifications of acceptances and guarantees by counterparty as of December 31, 2020 and 2021, are as follows: December 31, 2020 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Large companies ￦ 5,538,003 ￦ 1,770,235 ￦ 7,308,238 78.53 Small and medium-sized companies 695,860 459,487 1,155,347 12.41 Public sector and others 633,823 209,379 843,202 9.06 ￦ 6,867,686 ￦ 2,439,101 ￦ 9,306,787 100.00 December 31, 2021 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Large companies ￦ 5,431,921 ￦ 3,377,150 ￦ 8,809,071 81.06 Small and medium-sized companies 820,327 657,073 1,477,400 13.60 Public sector and others 229,175 351,309 580,484 5.34 ￦ 6,481,423 ￦ 4,385,532 ￦ 10,866,955 100.00 40.4 Classifications of acceptances and guarantees by industry as of December 31, 2020 and 2021, are as follows: December 31, 2020 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Financial institutions ￦ 632,947 ￦ 5,871 ￦ 638,818 6.86 Manufacturing 2,992,319 1,285,530 4,277,849 45.96 Service 920,352 89,457 1,009,809 10.85 Wholesale and retail 1,086,772 891,619 1,978,391 21.26 Construction 411,601 14,488 426,089 4.58 Public sector 104,925 103,285 208,210 2.24 Others 718,770 48,851 767,621 8.25 ￦ 6,867,686 ￦ 2,439,101 ￦ 9,306,787 100.00 December 31, 2021 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Financial institutions ￦ 385,761 ￦ 10,114 ￦ 395,875 3.64 Manufacturing 2,742,224 2,979,232 5,721,456 52.65 Service 676,440 38,920 715,360 6.58 Wholesale and retail 1,603,085 999,416 2,602,501 23.95 Construction 317,946 38,260 356,206 3.28 Public sector 28,257 99,841 128,098 1.18 Others 727,710 219,749 947,459 8.72 ￦ 6,481,423 ￦ 4,385,532 ￦ 10,866,955 100.00 40.5 Details of commitments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Commitments Corporate loan commitments ￦ 40,253,100 ￦ 45,767,502 Retail loan commitments 46,450,857 47,080,416 Credit line of credit cards 65,325,863 70,534,719 Purchase of other securities 7,104,163 6,835,506 159,133,983 170,218,143 Financial guarantee contracts Credit line 3,522,809 5,729,798 Purchase of securities 683,800 495,400 4,206,609 6,225,198 ￦ 163,340,592 ￦ 176,443,341 40.6 Other Matters (including litigation) a) The Group has 126 pending lawsuits as a plaintiff (excluding simple lawsuits related to the collection or management of loans), with aggregate claims amount of ￦578,033 million, and 264 pending lawsuits as a defendant (excluding simple lawsuits related to the collection or management of loans) with aggregate claims amount of ￦533,573 million, which arose in the normal course of the business, as of December 31, 2021. Details of major pending lawsuits in which the Group is a defendant are as follows: (In number of cases, in millions of Korean won) Company Lawsuits No. of Amount Description of the lawsuits Status of the lawsuits Kookmin Bank Request for a return of redemption amount 1 ￦ 48,068 Kookmin Bank invested the assets entrusted by OO Asset Management and OO Investment Trust Management in the Fairfield Sentry Limited, and Fairfield Sentry Limited reinvested the assets in Bernard L. Madoff Investment Securities LLC managed by Bernard Madoff (Bernard L. Madoff Investment Securities LLC is in the liquidation process due to Ponzi scheme fraud-related losses). Bankruptcy trustee of Bernard L. Madoff Investment Securities LLC filed a lawsuit against Kookmin Bank seeking to return the amount of redemptions received by Kookmin Bank through Fairfield Sentry Limited. Application for dismissal by the defendant has been denied, and further proceedings are scheduled. [Related litigation is in progress at the New York Southern District Federal Bankruptcy Court (10-3777) at the written complaint review stage] Company Lawsuits No. of Amount Description of the lawsuits Status of the lawsuits Confirm the absence of debt 1 96,200 Galamat-Art LLP is a joint guarantor of the PF loan for the ‘Kazakhstan Almaty City Complex Development Project’ in which Kookmin Bank Co., Ltd. participated as a lender. OO Bank, the agent bank of the lending group, filed a provisional seizure and a lawsuit on the merits of the guarantee debt to the local court against Galamat-Art LLP. And Galamat-Art LLP filed a counterclaim against the lenders, including Kookmin Bank, to confirm the absence of debt denying the joint guarantee obligation. Decision in the first trial on December 29, 2021. Won both lawsuits on the merits and counterclaim. Galamat-Art LLP lodged an appeal. KB Securities Co., Ltd. Request for a return of transaction amount (Australian fund) 1 100,000 The plaintiffs OOOO Securities and OOOO Life Insurance filed lawsuits, claiming that the KB Securities Co., Ltd. provided false information on major matters in the product description while selling JB Australia NDIS Private Fund No.1 (on April 25, 2019, plaintiffs invested ￦50 billion each) (a) (Primary claim) requesting KB Securities Co., Ltd. to return unjust enrichment of ￦100 billion for cancelation of sales contracts of beneficiary certificates due to an error or termination of the contract due to default, (b) (Secondary claim) requesting for compensation for damages in investments amounting to ￦100 billion due to violation of the investor protection obligation and fraudulent transactions of KB Securities Co., Ltd. and OOO Asset Management. First trial is in progress (The 4th pleading is scheduled for March 22, 2022). b) Kookmin Bank has entered into an agreement with PT Bosowa Corporindo, a major shareholder of PT Bank KB Bukopin Tbk. Under this agreement, Kookmin Bank and PT Bosowa Corporindo have a right of first refusal and a tag-along right. In addition, Kookmin Bank can exercise its drag-along right for two years from the time three years have elapsed since the acquisition date (July 27, 2018) in certain cases, such as violation of the agreement between shareholders. c) In June 2013, KB Kookmin Card Co., Ltd. had an accident in which cardholders’ personal information was stolen (hereinafter referred to as “accident”) due to illegal activities by employees of personal credit information company in charge of development of the system upgrading to prevent fraudulent use of credit card. As a result, KB Kookmin Card Co., Ltd. was notified by the Financial Services Commission of the suspension of some new business for 3 months as of February 16, 2014. In respect of the accident, the Group faces 2 legal claims filed as a defendant, with an aggregate claim amount of ￦108 million as of December 31, 2020 and 2021. The Group takes out the personal information protection liability insurance as of December 31, 2021. d) As of December 31, 2021, the Group is not able to dispose, transfer or collateralize the shares or rights of shares of KB KOLAO Leasing Co., Ltd. (“joint-venture lease company”) to a third party without the written consent of both KB Kookmin Card Co., Ltd. and LVMC Holdings (formerly Kolao Holdings), for five years (the restriction period for the disposal of its equity) after February 8, 2017. However, KB Kookmin Card Co., Ltd. and KB Capital Co., Ltd. may transfer all or part of their shares in the joint-venture lease company to affiliates of KB Financial Group Inc. who agree to comply with all the terms and conditions of this agreement on the establishment and operation of the joint-venture lease company and agree to succeed their responsibility for the joint-venture lease company. Meanwhile, KB KOLAO Leasing Co., Ltd. is selling LVMC Holdings (formerly Kolao Holdings) allied receivables that are overdue by three months or more to Lanexang Leasing Co., Ltd. in accordance with the agreement. e) As of December 31, 2021, KB Capital Co., Ltd. and PT Sunindo Primasura are required to hold the shares of PT Sunindo Kookmin Best Finance for five years after May 18, 2020, when the purchase of shares was completed. If one party is going to sell all or part of the shares, provide them as collateral, trade or dispose of them, it should give the opportunity to exercise preemption to the other party by providing written proposal including transfer price, payment method, and others. Meanwhile, the shareholders of PT Sunindo Kookmin Best Finance shall cause PT Sunindo Kookmin Best Finance, starting on the first financial year after the third year with distributable profits, whether continuous or cumulative, to pay the dividend to the shareholders in the maximum amount of 20% from net profit after tax in the respective financial year. f) KB Securities Co., Ltd., as a sales agency, sold ￦326,500 million of private equity funds and trusts, which loans to corporations (borrower) that invest in apartment rental businesses for the disabled in Australia, to individuals and institutional investors. However, management of the fund is impossible due to the breach of contract by local borrowers in Australia, therefore there is a possibility of losses of principal to these funds subscribers. In this regard, there are three lawsuits in which the Group is a defendant as of December 31, 2021. There is a possibility that additional lawsuits will be filed in the future, but the magnitude and final outcome of the lawsuit are unpredictable. g) In relation to Lime Asset Management, KB Securities Co., Ltd. has a PIS (Portfolio Index Swap) contract, as of December 31, 2021, associated with ‘Lime Thetis Qualified Investor Private Investment Trust No.2’ and ‘Lime Pluto FI Qualified Investor Private Investment Trust No.D-1’ whose redemption were suspended during the fourth quarter of 2019. The notional amount of the underlying assets of the PIS contract is ￦191,500 million. Meanwhile, the Group sold ￦68,100 million of feeder funds of aforementioned redemption-suspended funds. On October 20, 2020, Lime Asset Management’s license as a fund manager was revoked by the Financial Supervisory Service’s sanctions review committee, and most of its redemption-suspended funds and normal funds have been transferred to Wellbridge Asset Management (the bridge management company) to continue to collect and distribute investments. It is difficult to predict whether and when the aforementioned redemption-suspended funds will be redeemed. In this regard, KB Securities Co., Ltd. faces one claim filed as a defendant as of December 31, 2021. The Group has accounted for the estimated loss due to the possibility of additional lawsuits in the future as a provision for litigations. h) The proliferation of COVID-19 has had a negative impact on the global economy, which may have an impact on the expected credit losses and potential impairment of assets in a particular portfolio, and it could negatively affect the revenue generation capability of the Group as follows: • There is a possibility of uncertainty about the credit risk of a borrower that could be affected by COVID-19. • Uncertainty may arise about forward-looking macroeconomic information related to expected credit losses. • Korean won may depreciate against major foreign currencies. This may result in an increase in principal and interest payments on liabilities denominated in foreign currencies, and losses on foreign exchange transactions. • A significant decrease in the fair value of the Group’s investment in an entity that could be affected by COVID-19 pandemic can occur. Meanwhile, the impact on expected credit losses related to COVID-19 is described in Note 11.1 Changes in allowances for credit losses of loans and Note 24.2 Changes in provisions for credit losses of unused loan commitments, and acceptances and guarantees.

Subsidiaries

Subsidiaries	12 Months Ended
	Dec. 31, 2021
Disclosure of subsidiaries [abstract]
Subsidiaries	41. Subsidiaries 41.1 Details of major consolidated subsidiaries as of December 31, 2021, are as follows: Investor Investee Ownership Location Date of Industry KB Financial Group Inc. Kookmin Bank 100.00 Korea Dec Banking and foreign exchange transaction KB Securities Co., Ltd. 100.00 Korea Dec. Financial investment KB Insurance Co., Ltd. 100.00 Korea Dec. Non-life insurance KB Kookmin Card Co., Ltd. 100.00 Korea Dec. Credit card and installment financing Prudential Life Insurance Company of Korea Ltd. 100.00 Korea Dec. Life insurance KB Asset Management Co., Ltd. 100.00 Korea Dec. Collective investment and advisory KB Capital Co., Ltd. 100.00 Korea Dec. Financial Leasing KB Life Insurance Co., Ltd. 100.00 Korea Dec. Life insurance KB Real Estate Trust Co., Ltd. 100.00 Korea Dec. Real estate trust management KB Savings Bank Co., Ltd. 100.00 Korea Dec. Savings banking KB Investment Co., Ltd. 100.00 Korea Dec. Capital investment KB Data System Co., Ltd. 100.00 Korea Dec. Software advisory, development, and supply KB Credit Information Co., Ltd. 100.00 Korea Dec. Collection of receivables or credit investigation Kookmin Bank Kookmin Bank Cambodia Plc. 100.00 Cambodia Dec. Banking and foreign exchange transaction Kookmin Bank (China) Ltd. 100.00 China Dec. Banking and foreign exchange transaction KB Microfinance Myanmar Co., Ltd. 100.00 Myanmar Dec. Microfinance services PRASAC Microfinance Institution Plc. 100.00 Cambodia Dec. Microfinance services PT Bank KB Bukopin Tbk 67.00 Indonesia Dec. Banking and foreign exchange transaction PT Bank Syariah Bukopin 92.78 Indonesia Dec. Banking PT Bukopin Finance 97.03 Indonesia Dec. Installment financing KB Bank Myanmar Co., Ltd. 100.00 Myanmar Dec. Banking and foreign exchange transaction KB Securities Co., Ltd. KBFG Securities America Inc. 100.00 United States Dec. Investment advisory and securities trading KB Securities Hong Kong Ltd. 100.00 China Dec. Investment advisory and securities trading KB Securities Vietnam Joint Stock Company 99.70 Vietnam Dec. Investment advisory and securities trading KB FINA Joint Stock Company 77.82 Vietnam Dec. Investment advisory and securities trading Investor Investee Ownership Location Date of Industry KB Insurance Co., Ltd. Leading Insurance Services, Inc. 100.00 United States Dec. Management service KBFG Insurance(China) Co., Ltd. 100.00 China Dec. Non-life insurance PT. KB Insurance Indonesia 70.00 Indonesia Dec. Non-life insurance KB Claims Survey & Adjusting 100.00 Korea Dec. Claim service KB Sonbo CNS 100.00 Korea Dec. Management service KB Golden Life Care Co., Ltd. 100.00 Korea Dec. Service KB Healthcare Co., Ltd. 100.00 Korea Dec. Information and communication KB Kookmin Card Co., Ltd. KB Daehan Specialized Bank Plc. 95.71 Cambodia Dec. Auto Installment finance PT. KB Finansia Multi Finance 80.00 Indonesia Dec. Auto Installment finance KB J Capital Co., Ltd. 49.99 Thailand Dec. Service KB Capital Co., Ltd. PT Sunindo Kookmin Best Finance 85.00 Indonesia Dec. Auto Installment finance KB Kookmin Card Co., Ltd., KB Capital Co., Ltd. KB KOLAO Leasing Co., Ltd. 80.00 Laos Dec. Auto Installment finance Kookmin Bank, KB Data System Co., Ltd. PT KB Data Systems Indonesia 100.00 Indonesia Dec. Service KB Asset Management Co., Ltd. KBAM Shanghai Advisory Services Co., Ltd. 100.00 China Dec. General advisory 41.2 Details of consolidated structured entities as of December 31, 2021, are as follows: Consolidated structured entities Reasons for consolidation Trusts Kookmin Bank (development trust) and 10 others The Group controls the trust because it has power to determine management performance of the trust and is significantly exposed to variable returns that absorb losses through the guarantees of payment of principal, or payment of principal and fixed rate of return. Consolidated structured entities Reasons for consolidation Asset-backed securitization MS Sejong 4th Co., Ltd. and 125 others The Group controls these investees because it has power over relevant activities in the event of default, is significantly exposed to variable returns by providing lines of credit, ABCP purchase commitments or acquisition of subordinated debt and has ability to affect those returns through its power. Investment funds and others KB Global Platform Fund and 166 others Funds are consolidated if the Group, as a collective investor or operating manager (member), etc., can manage fund assets on behalf of other investors, or dismiss the collective investor and operating manager, and is substantially exposed to significant variable returns or has such rights. If the Group holds more than half of the ownership interests but does not have the power over relevant activities of structured entities in accordance with agreements with trust and other related parties, those structured entities are excluded from the consolidation. 41.3 Condensed financial information of major subsidiaries as of and for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Assets Liabilities Equity Operating Profit (loss) Total (In millions of Korean won) Kookmin Bank 1 ￦ 438,444,114 ￦ 408,036,040 ￦ 30,408,074 ￦ 24,519,818 ￦ 2,298,195 ￦ 2,905,953 KB Securities Co., Ltd. 1,2 57,570,654 52,516,488 5,054,166 10,040,497 425,622 449,507 KB Insurance Co., Ltd. 1,2 39,125,869 35,093,312 4,032,557 13,735,778 177,181 139,290 KB Kookmin Card Co., Ltd. 1 24,071,644 19,789,958 4,281,686 3,210,581 324,662 308,148 Prudential Life Insurance Company of Korea Ltd. 2 25,121,656 22,681,729 2,439,927 656,062 55,711 (31,718 ) KB Asset Management Co., Ltd. 1 335,601 112,522 223,079 191,427 57,317 57,802 KB Capital Co., Ltd. 1,2 12,823,748 11,392,177 1,431,571 1,300,378 141,646 139,949 KB Life Insurance Co., Ltd. 10,424,916 9,842,789 582,127 1,897,859 (23,185 ) (33,210 ) KB Real Estate Trust Co., Ltd. 1 437,619 108,096 329,523 139,070 66,874 66,718 KB Savings Bank Co., Ltd. 1,883,720 1,658,116 225,604 104,397 17,305 16,197 KB Investment Co., Ltd. 1 848,693 618,552 230,141 128,014 15,387 15,390 KB Data System Co., Ltd. 40,347 23,024 17,323 149,966 (1,729 ) (3,367 ) KB Credit Information Co., Ltd. 27,711 11,773 15,938 39,767 1,132 1,040 December 31, 2021 2021 Assets Liabilities Equity Operating Profit (loss) Total (In millions of Korean won) Kookmin Bank 1 ￦ 483,564,898 ￦ 450,675,985 ￦ 32,888,913 ￦ 26,536,995 ￦ 2,590,764 ￦ 3,265,921 KB Securities Co., Ltd. 1,2 55,493,985 50,008,422 5,485,563 8,543,590 594,301 628,112 KB Insurance Co., Ltd. 1,2 41,472,227 37,328,954 4,143,273 14,131,278 301,836 107,240 KB Kookmin Card Co., Ltd. 1 27,349,561 22,793,920 4,555,641 3,527,354 418,898 442,873 Prudential Life Insurance Company of Korea Ltd. 2 26,287,116 23,992,601 2,294,515 1,976,122 336,198 54,587 KB Asset Management Co., Ltd. 1 375,739 128,589 247,150 254,162 79,899 79,071 KB Capital Co., Ltd. 1,2 14,529,427 12,707,210 1,822,217 1,634,759 209,899 209,719 KB Life Insurance Co., Ltd. 10,634,562 10,174,282 460,280 2,259,301 (46,595 ) (121,847 ) KB Real Estate Trust Co., Ltd. 496,522 119,700 376,822 168,373 81,480 82,299 KB Savings Bank Co., Ltd. 2,601,134 2,339,037 262,097 150,028 18,932 22,526 KB Investment Co., Ltd. 1 1,197,720 922,239 275,481 207,367 55,338 55,340 KB Data System Co., Ltd. 1 44,486 25,911 18,575 174,819 467 1,105 KB Credit Information Co., Ltd. 28,674 12,303 16,371 39,909 388 434 1 Financial information is based on its 2 Includes fair value adjustments arising from the acquisition. 41.4 The Characteristics of Risks Associated with Consolidated Structured Entities The terms of contractual arrangements to provide financial support to consolidated structured entities are as follows: 41.4.1 The Group has provided payment guarantees of ￦4,512,760 million to K plus 1st L.L.C and other consolidated structured entities. 41.4.2 The Group has provided capital commitment to 31 consolidated structured entities including KB Sinansan Line Private Special Asset Fund (SOC). The unexecuted amount of the capital commitment is ￦1,642,214 million. Based on the capital commitment, the Group is subject to increase its investment upon the request of the asset management company or the additional agreement among investors. 41.4.3 The Group has provided the guarantees of payment of principal, or principal and fixed rate of return in case the operating results of the trusts are less than the guaranteed principal, or principal and fixed rate of return. 41.5 Changes in Subsidiaries 41.5.1 Subsidiaries newly included in consolidation for the year ended December 31, 2021, are as follows: Company Reasons of obtaining control PT KB Data Systems Indonesia and 15 others Holds more than half of the ownership interests Able Guwall 1st Co., Ltd. and 71 others Holds the power in the event of default and is exposed to significant variable returns by providing lines of credit, ABCP purchase commitments or acquisition of subordinated debt KB Global Private Real Estate Debt Fund No.11 and 33 others Holds the power to determine the operation of the funds and is exposed to variable returns by holding significant amount of ownership interests KB Global Commerce Private Equity Investment Fund and 4 others Holds the power as a general partner and is exposed to variable returns by holding significant amount of ownership interests 41.5.2 Subsidiaries excluded from consolidation for the year ended December 31, 2021, are as follows: Company Reasons of losing control Able Hana Co., Ltd. and 72 others Termination of the commitments KB SAUDI SEPCO II Private Special Asset Fund and 22 others Liquidation Aquila Global Real Assets Fund No.1 LP and 5 others Disposal KB Global ESG Securities Feeder Fund (Equity) and 8 others Decrease in ownership interests to less than majority

Unconsolidated Structured Entit

Unconsolidated Structured Entities	12 Months Ended
	Dec. 31, 2021
Disclosure of unconsolidated structured entities [abstract]
Unconsolidated Structured Entities	42. Unconsolidated Structured Entities 42.1 Nature, purpose, and activities of the unconsolidated structured entities and how the structured entities are financed, are as follows: Nature Purpose Activity Method of financing Structured financing Granting PF loans to SOC and real estate Granting loans to ships/aircrafts SPC Construction of SOC and real estate Building ships, construction and purchase of aircrafts Loan commitments through credit line, providing credit line, and investment agreements Investment funds Investment in beneficiary certificates Investment in PEF and partnerships Management of fund assets Payment of fund fees and allocation of fund profits Sales of beneficiary certificate instruments Investment from general partners and limited partners Trusts Management of financial trusts; —Development trust —General unspecified money trust —Trust whose principal is not guaranteed —Other trusts Management of trusted financial assets Payment of trust fees and allocation of trust profits. Sales of trusted financial assets Asset-backed securitization Early cash generation through transfer of securitized assets Fees earned through services to SPC, such as providing lines of credit and ABCP purchase commitments Fulfillment of asset-backed securitization plan Purchase and collection of securitized assets Issuance and repayment of ABS and ABCP Issuance of ABS and ABCP based on securitized assets 42.2 Details of scale of unconsolidated structured entities and nature of the risks associated with the Group’s interests in unconsolidated structured entities as of December 31, 2020 and 2021, are as follows: December 31, 2020 Structured Investment funds Trusts Asset-backed and others Total (In millions of Korean won) Total assets of unconsolidated structured entities ￦ 56,200,300 ￦ 285,528,467 ￦ 1,984,006 ￦ 116,115,027 ￦ 459,827,800 Carrying amount in the financial statements Assets: Financial assets at fair value through profit or loss ￦ 164,996 ￦ 11,151,958 ￦ — ￦ 2,308,917 ￦ 13,625,871 Derivative financial assets — — — 3,005 3,005 Loans measured at amortized cost 4,655,337 379,727 262,382 1,080,824 6,378,270 Financial investments — — — 7,849,054 7,849,054 Investments in associates — 396,953 — — 396,953 Other assets 2,572 3,257 91,297 16,363 113,489 ￦ 4,822,905 ￦ 11,931,895 ￦ 353,679 ￦ 11,258,163 ￦ 28,366,642 Liabilities: Deposits ￦ 612,023 ￦ 26,839 ￦ — ￦ 344,221 ￦ 983,083 Derivative financial liabilities — — — 1,307 1,307 Other liabilities 8,422 97 1 13,736 22,256 ￦ 620,445 ￦ 26,936 ￦ 1 ￦ 359,264 ￦ 1,006,646 Maximum exposure * Assets held ￦ 4,822,905 ￦ 11,931,895 ￦ 353,679 ￦ 11,258,163 ￦ 28,366,642 Purchase and investment commitments — 5,650,847 — 761,200 6,412,047 Unused credit 1,322,414 — 18,287 3,020,084 4,360,785 Acceptances and guarantees and loan commitments 883,342 16,650 — 684,257 1,584,249 ￦ 7,028,661 ￦ 17,599,392 ￦ 371,966 ￦ 15,723,704 ￦ 40,723,723 Methods of determining the maximum exposure Loan Investments / Trust Providing December 31, 2021 Structured Investment funds Trusts Asset-backed and others Total (In millions of Korean won) Total assets of unconsolidated structured entities ￦ 89,647,771 ￦ 416,401,893 ￦ 3,005,720 ￦ 144,897,727 ￦ 653,953,111 Carrying amount in the financial statements Assets: Financial assets at fair value through profit or loss ￦ 126,086 ￦ 13,340,292 ￦ 90,348 ￦ 3,602,631 ￦ 17,159,357 Derivative financial assets — — — 181 181 Loans measured at amortized cost 8,290,514 479,452 265,173 1,194,705 10,229,844 Financial investments — — — 8,084,101 8,084,101 Investments in associates — 292,315 — — 292,315 Other assets 2,496 3,111 119,630 15,638 140,875 ￦ 8,419,096 ￦ 14,115,170 ￦ 475,151 ￦ 12,897,256 ￦ 35,906,673 Liabilities: Deposits ￦ 650,834 ￦ 58,348 ￦ — ￦ 330,592 ￦ 1,039,774 Derivative financial liabilities — — — 437 437 Other liabilities 8,196 289 — 32,179 40,664 ￦ 659,030 ￦ 58,637 ￦ — ￦ 363,208 ￦ 1,080,875 Maximum exposure * Assets held ￦ 8,419,096 ￦ 14,115,170 ￦ 475,151 ￦ 12,897,256 ￦ 35,906,673 Purchase and investment commitments — 6,131,739 131,102 499,682 6,762,523 Unused credit 855,322 — — 4,990,797 5,846,119 Acceptances and guarantees and loan commitments 1,544,394 — 15,890 496,284 2,056,568 ￦ 10,818,812 ￦ 20,246,909 ￦ 622,143 ￦ 18,884,019 ￦ 50,571,883 Methods of determining the maximum exposure Loan Investments / Trust Providing * Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Disclosure of transactions between related parties [abstract]
Related Party Transactions	43. Related Party Transactions According to IAS No.24, the Group includes investments in associates, key management personnel (including family members), and post-employment benefit plans of the Group and its related party companies in the scope of related parties. The Group discloses balances (receivables and payables) and other amounts arising from transactions with related parties in the notes to the consolidated financial statements. Refer to Note 13 for details of investments in associates and joint ventures. 43.1 Details of significant profit or loss arising from transactions with related parties for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Associates and joint ventures Balhae Infrastructure Company Fee and commission income ￦ 6,743 ￦ 6,817 ￦ 5,689 Korea Credit Bureau Co., Ltd. Interest expense 21 7 6 Fee and commission income 1,056 957 910 Insurance income 3 5 4 Fee and commission expense 2,541 3,280 4,256 Other operating expenses — 1 11 KB GwS Private Securities Investment Trust * Fee and commission income 851 853 146 Incheon Bridge Co., Ltd. Interest income 8,612 4,345 4,069 Interest expense 483 334 158 Fee and commission income — 23 22 Fee and commission expense 7 6 6 Insurance income 284 279 230 Gains on financial instruments at fair value through profit or loss 4,975 899 — Losses on financial instruments at fair value through profit or loss — — 1,374 Reversal of credit losses 5 — 444 Provision for credit losses 1 472 1 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 Fee and commission income 178 12 — Aju Good Technology Venture Fund Interest expense 22 18 27 KB Star Office Private Real Estate Master Fund No.1 Interest income 370 371 370 Interest expense 208 61 5 Fee and commission income 435 436 435 RAND Bio Science Co., Ltd. Interest expense 5 11 — Other non-operating expenses 843 — — SY Auto Capital Co., Ltd. Interest income 1,016 1,097 941 Interest expense 1 2 — Fee and commission income 34 39 88 Fee and commission expense 389 132 15 Insurance income 32 40 42 Other operating income 689 1,709 710 Other operating expenses 288 121 64 Reversal of credit losses 13 17 11 2019 2020 2021 (In millions of Korean won) Food Factory Co., Ltd. Interest income 41 52 70 Interest expense — 12 5 Insurance income 4 5 9 Fee and commission expense 12 4 2 Gains on financial instruments at fair value through profit or loss 60 72 — Losses on financial instruments at fair value through profit or loss — — 1 Reversal of credit losses — — 6 Provision for credit losses 1 8 — KB Pre IPO Secondary Venture Fund No.1 Interest expense 7 3 1 Fee and commission income 110 110 110 Built On Co., Ltd. * Interest income 1 — — Insurance income 1 — — KB Private Equity Fund No.3 * Fee and commission income 480 463 — Wise Asset Management Co., Ltd. * Interest expense 2 — — Acts Co., Ltd. Interest income 1 1 — Insurance income 1 — 1 Gains on financial instruments at fair value through profit or loss 30 — — Dongjo Co., Ltd. Insurance income 2 1 1 A-PRO Co., Ltd. * Interest income 19 7 — Interest expense 4 1 — Fee and commission expense 17 — — Insurance income 4 1 — Provision for credit losses — 1 — POSCO-KB Shipbuilding Fund Fee and commission income 490 387 213 Dae-A Leisure Co., Ltd. Interest expense 8 7 2 Paycoms Co., Ltd. Interest income 10 10 10 Insurance income 1 — — Gains on financial instruments at fair value through profit or loss 125 69 42 Big Dipper Co., Ltd. Fee and commission expense — 768 655 KB-KDBC Pre-IPO New Technology Business Investment Fund Interest expense 58 23 1 Fee and commission income 449 300 190 KB-TS Technology Venture Private Equity Fund Fee and commission income 730 126 285 KB-SJ Tourism Venture Fund Fee and commission income 422 338 279 JLK Inspection Co., Ltd. * Interest expense 1 — — TESTIAN Inc. * Interest income 3 — — Banksalad Co., Ltd. Gains on financial instruments at fair value through profit or loss — 1,636 613 Losses on financial instruments at fair value through profit or loss — — 663 Fee and commission income 39 36 36 Fee and commission expense 5 48 2019 2020 2021 (In millions of Korean won) Iwon Alloy Co., Ltd. Insurance income 2 1 — Bioprotect Ltd. Gains on financial instruments at fair value through profit or loss — — 293 Losses on financial instruments at fair value through profit or loss — 216 — RMGP Bio-Pharma Investment Fund, L.P. Fee and commission income — 27 38 Other non-operating income 33 — — Gains on financial instruments at fair value through profit or loss 947 — 531 Losses on financial instruments at fair value through profit or loss 2,120 489 2,373 RMGP Bio-Pharma Investment, L.P. Losses on financial instruments at fair value through profit or loss — 1 — KB-MDI Centauri Fund LP Fee and commission income — 308 401 Gains on financial instruments at fair value through profit or loss — — 551 Losses on financial instruments at fair value through profit or loss — 322 284 Hibiscus Fund LP Fee and commission income — — 372 Gains on financial instruments at fair value through profit or loss — — 113 RMG-KB BioAccess Fund L.P. Fee and commission income — — 57 Gains on financial instruments at fair value through profit or loss — — 5 S&E Bio Co., Ltd. Interest expense — 1 1 Contents First Inc. Interest expense — 14 83 December & Company Inc. Interest expense — 1 — Insurance income — — 109 GENINUS Inc. Interest expense — 70 29 Gains on financial instruments at fair value through profit or loss — — 4,009 Provision for credit losses — — 6 Wyatt Corp. Gains on financial instruments at fair value through profit or loss 136 — — Insurance income 50 63 87 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund Interest expense 89 40 17 Fee and commission income 735 734 514 Spark Biopharma Inc. Interest expense 59 — 7 Skydigital Inc. Fee and commission income 4 3 KB No.9 Special Purpose Acquisition Company * Interest expense (23 ) — — KB No.10 Special Purpose Acquisition Company * Interest expense 18 — — Gains on financial instruments at fair value through profit or loss 3,066 — — 2019 2020 2021 (In millions of Korean won) KB No.11 Special Purpose Acquisition Company * Interest expense 9 — — Gains on financial instruments at fair value through profit or loss 118 — — KB No.17 Special Purpose Acquisition Company Fee and commission income 175 — — Gains on financial instruments at fair value through profit or loss 1,384 4 — Losses on financial instruments at fair value through profit or loss — — 1,388 Interest expense 28 25 14 KB No.18 Special Purpose Acquisition Company Fee and commission income 263 — — Gains on financial instruments at fair value through profit or loss 1,898 84 8 Interest expense 28 31 20 KB No.19 Special Purpose Acquisition Company Fee and commission income 150 — — Gains on financial instruments at fair value through profit or loss 1,044 11 36 Interest expense 8 13 9 KB No.20 Special Purpose Acquisition Company Fee and commission income — 210 — Gains on financial instruments at fair value through profit or loss — 1,568 68 Interest expense 3 25 15 KB SPROTT Renewable Private Equity Fund No.1 Fee and commission income 490 488 487 KB-Stonebridge Secondary Private Equity Fund Fee and commission income 1,444 1,442 550 COSES GT Co., Ltd. Interest income — 6 18 Interest expense — — 1 Losses on financial instruments at fair value through profit or loss 5 — — Provision for credit losses — 4 — Reversal of credit losses — — 3 IDTECK Co., Ltd. Insurance income — — 1 Mantisco Co., Ltd. Interest expense — — 1 SuperNGine Co., Ltd. Interest expense — — 1 Desilo Inc. Interest income — — 1 Provision for credit losses — — 2 Turing Co., Ltd. Interest expense — — 1 IGGYMOB Co., Ltd. Interest expense — — 1 WJ Private Equity Fund No.1 Fee and commission income — 5 7 UPRISE, Inc. Interest income — 2 5 Interest expense — — 1 Provision for credit losses — 1 — Reversal of credit losses — — 1 CWhy Inc. Losses on financial instruments at fair value through profit or loss — 2,000 — Insurance income 3 — — 2019 2020 2021 (In millions of Korean won) Stratio, Inc. Interest expense 1 — — NEXELON Inc. * Interest expense 2 — — CellinCells Co., Ltd. Interest expense 19 4 — Bomapp Inc. Fee and commission expense — 9 5 Interest expense 1 — — Insurance income 1 8 — Losses on financial instruments at fair value through profit or loss — — 1,980 KB Social Impact Investment Fund Fee and commission income 121 300 300 KB-UTC Inno-Tech Venture Fund Fee and commission income — 371 471 KBSP Private Equity Fund No.4 Fee and commission income — 480 389 KB-NAU Special Situation Corporate Restructuring Private Equity Fund Fee and commission income — 237 1,198 JR Global REIT * Fee and commission income — 6,210 — IGIS No.371 Professional Investors’ Real Estate Investment Company * Fee and commission income — 200 — Koreit Tower Real Estate Investment Trust Company * Fee and commission income — 2,852 — 2020 KB Fintech Renaissance Fund Fee and commission income — 60 147 KB Material and Parts No.1 PEF Fee and commission income — 63 353 FineKB Private Equity Fund No.1 Fee and commission income — 38 540 Paramark KB Fund No.1 Fee and commission income — — 100 KB Bio Private Equity No.3 Ltd. Fee and commission income — — 324 K The 15th REIT Co., Ltd. * Fee and commission income — — 500 Insurance income — — 1 Bluepointpartners Inc. Gains on financial instruments at fair value through profit or loss — — 846 Losses on financial instruments at fair value through profit or loss — 68 — KB-Solidus Global Healthcare Fund Fee and commission income 81 777 167 SwatchOn Inc. Fee and commission income — 9 8 Interest expense — 47 10 Gomi corporation Inc. Interest income — — 19 Interest expense — — 1 Provision for credit losses — — 13 BNF Corporation Ltd. * Interest income 7 401 — Fee and commission income — 2 — Gains on financial instruments at fair value through profit or loss 158 — — Provision for credit losses 1 8 — KB Cape No.1 Private Equity Fund Fee and commission income 97 144 144 Losses on financial instruments at fair value through profit or loss — — 69 ALS Co., Ltd. * Interest income 194 — — Keystone-Hyundai Securities No.1 Private Equity Fund * Fee and commission income 90 115 43 MJT&I Corp. Insurance income 1 — — Others Retirement pension Fee and commission income 939 1,077 1,338 Interest expense 4 3 9 * Excluded from the Group’s related party as of December 31, 2021. Meanwhile, the Group purchased installment financial assets, etc. from SY Auto Capital Co., Ltd. amounting to ￦1,504,217 million and ￦878,690 million for the years ended December 31, 2020 and 2021, respectively. 43.2 Details of significant outstanding balances of receivables and payables arising from transactions with related parties as of December 31, 2020 and 2021, are as follows: December 31, December 31, (In millions of Korean won) Associates and joint ventures Balhae Infrastructure Company Other assets ￦ 1,733 ￦ 1,427 Korea Credit Bureau Co., Ltd. Loans measured at amortized cost (gross amount) 36 36 Deposits 19,982 10,200 Insurance liabilities 1 1 Other liabilities 623 — KB GwS Private Securities Investment Trust * Other assets 641 — Incheon Bridge Co., Ltd. Financial assets at fair value through profit or loss 38,756 37,382 Loans measured at amortized cost (gross amount) 133,002 114,107 Allowances for credit losses 202 26 Other assets 545 423 Deposits 39,520 35,487 Provisions 292 24 Insurance liabilities 109 79 Other liabilities 205 99 Jungdo Co., Ltd. Deposits 4 4 Dongjo Co., Ltd. Insurance liabilities 1 — Dae-A Leisure Co., Ltd. Deposits 636 17 Other liabilities 21 — Aju Good Technology Venture Fund Deposits 3,093 6,286 Other liabilities 1 10 KB Star Office Private Real Estate Master Fund No.1 Loans measured at amortized cost (gross amount) 10,000 10,000 Allowances for credit losses 5 5 Other assets 137 138 Deposits 4,255 2,578 Other liabilities 24 — KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund Deposits 8,097 1,524 Other liabilities 1 — WJ Private Equity Fund No.1 Other assets 2 2 Deposits 349 260 KB Cape No.1 Private Equity Fund Financial assets at fair value through profit or loss 2,000 1,591 Other assets 144 73 December 31, December 31, (In millions of Korean won) RAND Bio Science Co., Ltd. Deposits 693 443 Loans measured at amortized cost (gross amount) 1 1 SY Auto Capital Co., Ltd. Loans measured at amortized cost (gross amount) 40,060 40,074 Allowances for credit losses 57 68 Other assets 65 630 Deposits 6 17 Insurance liabilities 13 14 Other liabilities 76 36 Food Factory Co., Ltd. Financial assets at fair value through profit or loss 662 663 Loans measured at amortized cost (gross amount) 3,210 3,553 Allowances for credit losses 8 4 Other assets 3 2 Deposits 1,555 839 Provisions 2 — Insurance liabilities 5 8 Other liabilities 9 6 KB Pre IPO Secondary Venture Fund No.1 Deposits 629 103 Acts Co., Ltd. Deposits 18 154 Insurance liabilities 1 2 Other liabilities 100 100 POSCO-KB Shipbuilding Fund Other assets 264 213 Paycoms Co., Ltd. Other assets 1 1 Financial assets at fair value through profit or loss 1,226 1,269 Deposits 1 1 Big Dipper Co., Ltd. Loans measured at amortized cost (gross amount) 4 17 Deposits 1 — KB-KDBC Pre-IPO New Technology Business Investment Fund Deposits 923 904 Iwon Alloy Co., Ltd. Insurance liabilities — 1 RMGP Bio-Pharma Investment Fund, L.P. Financial assets at fair value through profit or loss 4,250 5,423 Other liabilities 71 79 RMGP Bio-Pharma Investment, L.P. Financial assets at fair value through profit or loss 9 14 Wyatt Corp. Financial assets at fair value through profit or loss 6,000 6,000 Deposits 1 1 Insurance liabilities 39 94 Skydigital Inc. Deposits 15 85 Banksalad Co., Ltd. Financial assets at fair value through profit or loss 9,141 9,090 December 31, December 31, (In millions of Korean won) Spark Biopharma Inc. Loans measured at amortized cost (gross amount) — 17 Financial assets at fair value through profit or loss — 4,950 Deposits — 6,015 Other liabilities — 3 UPRISE, Inc. Financial assets at fair value through profit or loss 250 1,250 Loans measured at amortized cost (gross amount) 500 — Allowances for credit losses 1 — Deposits 11 4,001 Stratio, Inc. Financial assets at fair value through profit or loss 1,000 1,000 Deposits 13 — Honest Fund, Inc. Financial assets at fair value through profit or loss 3,999 3,999 CellinCells Co., Ltd. Financial assets at fair value through profit or loss 2,000 2,000 Loans measured at amortized cost (gross amount) 24 6 Deposits 260 38 Jo Yang Industrial Co., Ltd. Deposits 2 1 KB No.17 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 2,687 1,301 Deposits 1,711 1,687 Other liabilities 23 12 KB No.18 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 3,873 3,881 Deposits 2,101 2,077 Other liabilities 19 12 KB No.19 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 2,055 2,091 Deposits 1,053 1,013 Other liabilities 3 5 KB No.20 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 3,067 3,135 Deposits 1,716 1,681 Other liabilities 1 3 COSES GT Co., Ltd. Financial assets at fair value through profit or loss 4,930 4,930 Loans measured at amortized cost (gross amount) 500 515 Allowances for credit losses 4 2 Other assets 1 1 Deposits 292 1,939 Insurance liabilities 1 — December 31, December 31, (In millions of Korean won) IDTECK Co., Ltd. Insurance liabilities — 1 Bomapp Inc. Financial assets at fair value through profit or loss 1,999 19 Insurance liabilities 2 — Channel Corporation Financial assets at fair value through profit or loss 4,551 14,551 MitoImmune Therapeutics Financial assets at fair value through profit or loss 5,000 7,000 KB-Solidus Global Healthcare Fund Other assets 707 620 Bioprotect Ltd. Financial assets at fair value through profit or loss 3,264 3,557 Gomi corporation Inc. Financial assets at fair value through profit or loss 500 2,500 Loans measured at amortized cost (gross amount) 9 2,233 Allowances for credit losses — 12 Other assets — 4 Deposits 37 3,188 Other liabilities — 1 Copin Communications, Inc. Financial assets at fair value through profit or loss 1,500 4,801 Go2joy Co., Ltd. Financial assets at fair value through profit or loss 1,200 1,200 ClavisTherapeutics, Inc. Financial assets at fair value through profit or loss 2,000 2,000 S&E Bio Co., Ltd. Financial assets at fair value through profit or loss 2,000 2,000 Deposits 1,142 263 Bluepointpartners Inc. Financial assets at fair value through profit or loss 1,432 2,278 4N Inc. Financial assets at fair value through profit or loss 200 200 Deposits 76 39 Xenohelix Co., Ltd. Financial assets at fair value through profit or loss 2,100 2,100 Contents First Inc. Financial assets at fair value through profit or loss 6,146 7,277 Deposits 1,823 12,650 Other liabilities 7 57 KB-MDI Centauri Fund LP Financial assets at fair value through profit or loss 4,280 9,633 Other assets 308 104 OKXE Inc. Financial assets at fair value through profit or loss 800 800 December 31, December 31, (In millions of Korean won) GENINUS Inc. Financial assets at fair value through profit or loss 5,599 5,855 Loans measured at amortized cost (gross amount) — 17 Allowances for credit losses — 6 Deposits 13,630 34,415 Other liabilities 15 2 Mantisco Co., Ltd. Loans measured at amortized cost (gross amount) — 1 Financial assets at fair value through profit or loss — 3,000 Deposits — 386 IMBiologics Corp. Loans measured at amortized cost (gross amount) — 4 Financial assets at fair value through profit or loss — 5,000 SuperNGine Co., Ltd. Loans measured at amortized cost (gross amount) — 2 Deposits — 944 Financial assets at fair value through profit or loss — 1,996 Desilo Inc. Financial assets at fair value through profit or loss — 3,168 Loans measured at amortized cost (gross amount) — 301 Allowances for credit losses — 2 Deposits — 168 Turing Co., Ltd. Financial assets at fair value through profit or loss — 3,000 Deposits — 1,054 IGGYMOB Co., Ltd. Financial assets at fair value through profit or loss — 5,000 Loans measured at amortized cost (gross amount) — 6 Deposits — 2,938 FineKB Private Equity Fund No.1 Other assets 38 153 Paramark KB Fund No.1 Other liabilities — 200 Neomio Corp. * Deposits 535 — December & Company Inc. Deposits 1 1 Insurance liabilities — 10 KB Social Impact Investment Fund Other assets — 150 Checkmate Therapeutics Inc. Financial assets at fair value through profit or loss — 2,200 G1 Playground Co., Ltd. Financial assets at fair value through profit or loss — 1,000 Deposits — 354 Pin Therapeutics Inc. Financial assets at fair value through profit or loss — 3,000 December 31, December 31, (In millions of Korean won) Hibiscus Fund LP Financial assets at fair value through profit or loss — 4,731 Other assets — 251 RMG-KB BioAccess Fund L.P. Financial assets at fair value through profit or loss — 353 RMG-KB BP Management Ltd. Financial assets at fair value through profit or loss — 7 SwatchOn Inc. Financial assets at fair value through profit or loss 3,345 3,345 Loans measured at amortized cost (gross amount) 59 73 Provisions 1 — Deposits 3,947 686 Other liabilities 40 — Key management personnel Loans measured at amortized cost (gross amount) 5,153 4,591 Allowances for credit losses 2 2 Other assets 5 4 Deposits 17,167 16,996 Provisions — 1 Insurance liabilities 2,501 2,471 Other liabilities 371 345 Others Retirement pension Other assets 295 369 Other liabilities 10,600 5,014 * Excluded from the Group’s related party as of December 31, 2021, therefore, the remaining outstanding balances with those entities are not disclosed. 43.3 Details of significant lending transactions with related parties for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Loan Collection Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦43 ￦ 36 ￦ (43 ) ￦ 36 Incheon Bridge Co., Ltd. 185,564 901 (14,707 ) 171,758 Carlife Co., Ltd. — 22 (22 ) — KB Star Office Private Real Estate Master Fund No.1 10,000 — — 10,000 KB Cape No.1 Private Equity Fund 2,000 — — 2,000 RAND Bio Science Co., Ltd. 1 1 (1 ) 1 SY Auto Capital Co., Ltd. 41,990 11,310 (13,240 ) 40,060 Food Factory Co., Ltd. 2,582 1,314 (24 ) 3,872 Acts Co., Ltd. — 74 (74 ) — Paycoms Co., Ltd. 1,157 69 — 1,226 Big Dipper Co., Ltd. 11 4 (11 ) 4 A-PRO Co., Ltd.* 2,019 2,000 (4,019 ) — RMGP Bio-Pharma Investment Fund, L.P. 3,419 831 — 4,250 RMGP Bio-Pharma Investment, L.P. 8 1 — 9 Wyatt Corp. 6,000 — — 6,000 Banksalad Co., Ltd. 7,504 1,637 — 9,141 UPRISE, Inc. 250 500 — 750 Stratio, Inc. 1,000 — — 1,000 Honest Fund, Inc. 3,999 — — 3,999 CellinCells Co., Ltd. 2,004 24 (4 ) 2,024 KB No.17 Special Purpose Acquisition Company 2,683 4 — 2,687 KB No.18 Special Purpose Acquisition Company 3,786 87 — 3,873 KB No.19 Special Purpose Acquisition Company 2,043 12 — 2,055 KB No.20 Special Purpose Acquisition Company 1,499 1,568 — 3,067 COSES GT Co., Ltd. 2,930 2,500 — 5,430 CWhy Inc. 2,000 — (2,000 ) — Bomapp Inc. 1,999 — — 1,999 Channel Corporation 2,000 2,551 — 4,551 MitoImmune Therapeutics 5,000 — — 5,000 Bioprotect Ltd. — 3,264 — 3,264 Gomi corporation Inc. — 509 — 509 Copin Communications, Inc. — 1,500 — 1,500 Go2joy Co., Ltd. — 1,200 — 1,200 ClavisTherapeutics, Inc. — 2,000 — 2,000 S&E bio Co., Ltd. — 2,000 — 2,000 Bluepointpartners Inc. — 1,432 — 1,432 4N Inc. — 200 — 200 Xenohelix Co., Ltd. — 2,100 — 2,100 Contents First Inc. — 6,146 — 6,146 KB-MDI Centauri Fund LP — 4,280 — 4,280 SwatchOn Inc. 1,845 1,559 — 3,404 OKXE Inc. — 800 — 800 GENINUS Inc. — 5,599 — 5,599 BNF Corporation Ltd.* 3,659 1,000 (4,659 ) — Key management personnel 3,538 5,141 (3,526 ) 5,153 2021 Beginning Loan Collection Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦ 36 ￦ 36 ￦ (36 ) ￦ 36 Incheon Bridge Co., Ltd. 171,758 7 (20,276 ) 151,489 KB Star Office Private Real Estate Master Fund No.1 10,000 — — 10,000 KB Cape No.1 Private Equity Fund 2,000 — (409 ) 1,591 RAND Bio Science Co., Ltd. 1 1 (1 ) 1 SY Auto Capital Co., Ltd. 40,060 74 (60 ) 40,074 Food Factory Co., Ltd. 3,872 397 (53 ) 4,216 Paycoms Co., Ltd. 1,226 43 — 1,269 Big Dipper Co., Ltd. 4 17 (4 ) 17 RMGP Bio-Pharma Investment Fund, L.P. 4,250 1,173 — 5,423 RMGP Bio-Pharma Investment, L.P. 9 5 — 14 Wyatt Corp. 6,000 — — 6,000 Banksalad Co., Ltd. 9,141 — (51 ) 9,090 UPRISE, Inc. 750 1,000 (500 ) 1,250 Stratio, Inc. 1,000 — — 1,000 Honest Fund, Inc. 3,999 — — 3,999 CellinCells Co., Ltd. 2,024 6 (24 ) 2,006 KB No.17 Special Purpose Acquisition Company 2,687 — (1,386 ) 1,301 KB No.18 Special Purpose Acquisition Company 3,873 8 — 3,881 KB No.19 Special Purpose Acquisition Company 2,055 36 — 2,091 KB No.20 Special Purpose Acquisition Company 3,067 68 — 3,135 COSES GT Co., Ltd. 5,430 15 — 5,445 Bomapp Inc. 1,999 — (1,980 ) 19 Channel Corporation 4,551 10,000 — 14,551 MitoImmune Therapeutics 5,000 2,000 — 7,000 Bioprotect Ltd. 3,264 293 — 3,557 Gomi corporation Inc. 509 4,233 (9 ) 4,733 Copin Communications, Inc. 1,500 3,301 — 4,801 Go2joy Co., Ltd. 1,200 — — 1,200 ClavisTherapeutics, Inc. 2,000 — — 2,000 S&E Bio Co., Ltd. 2,000 — — 2,000 Bluepointpartners Inc. 1,432 846 — 2,278 4N Inc. 200 — — 200 Xenohelix Co., Ltd. 2,100 — — 2,100 Contents First Inc. 6,146 1,131 — 7,277 KB-MDI Centauri Fund LP 4,280 5,353 — 9,633 SwatchOn Inc. 3,404 73 (59 ) 3,418 OKXE Inc. 800 — — 800 GENINUS Inc. 5,599 273 — 5,872 Checkmate Therapeutics Inc. — 2,200 — 2,200 Mantisco Co., Ltd. — 3,001 — 3,001 IMBiologics Corp. — 5,004 — 5,004 Spark Biopharma Inc. — 4,967 — 4,967 G1 Playground Co., Ltd. — 1,000 — 1,000 Pin Therapeutics Inc. — 3,000 — 3,000 Hibiscus Fund LP — 4,731 — 4,731 SuperNGine Co., Ltd. — 1,998 — 1,998 2021 Beginning Loan Collection Ending (In millions of Korean won) Desilo Inc. — 3,469 — 3,469 RMG-KB BioAccess Fund L.P. — 353 — 353 RMG-KB BP Management Ltd. — 7 — 7 IGGYMOB Co., Ltd. — 5,006 — 5,006 Turing Co., Ltd. — 3,000 — 3,000 Key management personnel 5,153 3,421 (3,983 ) 4,591 * Excluded from the Group’s related party as of December 31, 2021. 43.4 Details of significant borrowing transactions with related parties for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦ 17,966 ￦ 1,000 ￦ — ￦ 1,016 ￦ 19,982 Incheon Bridge Co., Ltd. 45,447 20,000 (21,260 ) (4,667 ) 39,520 Jungdo Co., Ltd. 4 — — — 4 Dae-A Leisure Co., Ltd. 753 — — (117 ) 636 Computerlife Co., Ltd. 1 — — (1 ) — Skydigital Inc. 25 — — (10 ) 15 Jo Yang Industrial Co., Ltd. 2 — — — 2 Aju Good Technology Venture Fund 5,456 1,442 — (3,805 ) 3,093 KB-KDBC Pre-IPO New Technology Business Investment Fund 7,054 1,500 (6,500 ) (1,131 ) 923 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund 13,118 — — (5,021 ) 8,097 Neomio Corp. 2 — — — 535 535 WJ Private Equity Fund No.1 — — — 349 349 KB Star Office Private Real Estate Master Fund No.1 8,293 2,117 (5,630 ) (525 ) 4,255 SY Auto Capital Co., Ltd. 8 — — (2 ) 6 KB No.17 Special Purpose Acquisition Company 1,742 1,525 (1,500 ) (56 ) 1,711 KB No.18 Special Purpose Acquisition Company 2,140 2,063 (2,100 ) (2 ) 2,101 KB No.19 Special Purpose Acquisition Company 1,093 1,000 (1,000 ) (40 ) 1,053 KB No.20 Special Purpose Acquisition Company 1,984 1,522 (1,500 ) (290 ) 1,716 RAND Bio Science Co., Ltd. 4,452 2,250 (3,750 ) (2,259 ) 693 Wise Asset Management Co., Ltd. 21 — — (21 ) — Food Factory Co., Ltd. 1,073 1,503 (1,003 ) (18 ) 1,555 Acts Co., Ltd. 1 — — 17 18 Paycoms Co., Ltd. 1 — — — 1 Big Dipper Co., Ltd. 6 — — (5 ) 1 A-PRO Co., Ltd. 2 3,201 — — (3,201 ) — Wyatt Corp. — — — 1 1 Stratio, Inc. 726 — — (713 ) 13 UPRISE, Inc. — — — 11 11 CellinCells Co., Ltd. 1,545 — — (1,285 ) 260 COSES GT Co., Ltd. — — — 292 292 SwatchOn Inc. 395 7,002 (3,801 ) 351 3,947 2020 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) BNF Corporation Ltd. 2 947 — — (947 ) — Gomi corporation Inc. — — — 37 37 S&E bio Co., Ltd. — — — 1,142 1,142 KB IGen Private Equity Fund No.1 2 147 — — (147 ) — KB Pre IPO Secondary Venture Fund No.1 2,955 — — (2,326 ) 629 4N Inc. — — — 76 76 Contents First Inc. — 4,000 (3,000 ) 823 1,823 December & Company Inc. — — — 1 1 GENINUS Inc. — — — 13,630 13,630 Key management personnel 15,338 21,319 (20,410 ) 920 17,167 2021 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦ 19,982 ￦ — ￦ (1,000 ) ￦ (8,782 ) ￦ 10,200 Incheon Bridge Co., Ltd. 39,520 15,000 (20,000 ) 967 35,487 Jungdo Co., Ltd. 4 — — — 4 Dae-A Leisure Co., Ltd. 636 — (479 ) (140 ) 17 Skydigital Inc. 15 — — 70 85 Jo Yang Industrial Co., Ltd. 2 — — (1 ) 1 Aju Good Technology Venture Fund 3,093 3,840 (1,442 ) 795 6,286 KB-KDBC Pre-IPO New Technology Business Investment Fund 923 — — (19 ) 904 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund 8,097 — — (6,573 ) 1,524 Neomio Corp. 2 535 — — (535 ) — WJ Private Equity Fund No.1 349 — — (89 ) 260 KB Star Office Private Real Estate Master Fund No.1 4,255 — (1,770 ) 93 2,578 SY Auto Capital Co., Ltd. 6 — — 11 17 KB No.17 Special Purpose Acquisition Company 1,711 1,546 (1,525 ) (45 ) 1,687 KB No.18 Special Purpose Acquisition Company 2,101 2,016 (2,063 ) 23 2,077 KB No.19 Special Purpose Acquisition Company 1,053 1,000 (1,000 ) (40 ) 1,013 KB No.20 Special Purpose Acquisition Company 1,716 1,534 (1,522 ) (47 ) 1,681 RAND Bio Science Co., Ltd. 693 — (400 ) 150 443 Food Factory Co., Ltd. 1,555 507 (500 ) (723 ) 839 Acts Co., Ltd. 18 — — 136 154 Paycoms Co., Ltd. 1 — — — 1 Big Dipper Co., Ltd. 1 — — (1 ) — Wyatt Corp. 1 — — — 1 Stratio, Inc. 13 — — (13 ) — UPRISE, Inc. 11 — — 3,990 4,001 CellinCells Co., Ltd. 260 — — (222 ) 38 COSES GT Co., Ltd. 292 — — 1,647 1,939 SwatchOn Inc. 3,947 200 (3,501 ) 40 686 Gomi corporation Inc. 37 — — 3,151 3,188 S&E Bio Co., Ltd. 1,142 — — (879 ) 263 KB Pre IPO Secondary Venture Fund No.1 629 — — (526 ) 103 2021 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) 4N Inc. 76 — — (37 ) 39 Contents First Inc. 1,823 20,000 (11,000 ) 1,827 12,650 December & Company Inc. 1 — — — 1 GENINUS Inc. 13,630 — (5,000 ) 25,785 34,415 Mantisco Co., Ltd. — — — 386 386 Spark Biopharma Inc. — 1,000 (3,000 ) 8,015 6,015 G1 Playground Co., Ltd. — — — 354 354 SuperNGine Co., Ltd. — — — 944 944 Desilo Inc. — — — 168 168 Turing Co., Ltd. — — — 1,054 1,054 IGGYMOB Co., Ltd. — — — 2,938 2,938 Key management personnel 17,167 16,574 (16,994 ) 249 16,996 1 Transactions between related parties, such as settlements arising from operating activities and deposits, are expressed in net amount. 2 Excluded from the Group’s related party as of December 31, 2021. 43.5 Details of significant investment and withdrawal transactions with related parties for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 Equity Withdrawal Equity Withdrawal (In millions of Korean won) Balhae Infrastructure Company ￦ 894 ￦ 6,973 ￦ 279 ￦ 9,584 KB GwS Private Securities Investment Trust* — 9,523 — 188,836 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 — 3,230 — 11,860 POSCO-KB Shipbuilding Fund 5,000 2,125 — 7,600 KB Pre IPO Secondary Venture Fund No.1 — 585 — 292 KB-KDBC Pre-IPO New Technology Business Investment Fund — 6,400 — 4,800 KB-SJ Tourism Venture Fund 1,500 — 500 — Korea Credit Bureau Co., Ltd. — 90 — 90 KB-UTC Inno-Tech Venture Fund 16,965 — 5,085 1,125 KB-Solidus Global Healthcare Fund 10,920 4,940 — 3,120 KB-Stonebridge Secondary Private Equity Fund 9,093 — 13,258 11,578 WJ Private Equity Fund No.1 10,000 — — — All Together Korea Fund No.2 100,000 90,127 — — KB Star Office Private Real Estate Master Fund No.1 — 1,273 — 1,246 KB SPROTT Renewable Private Equity Fund No.1 4,129 — — — KB-NAU Special Situation Corporate Restructuring Private Equity Fund 5,700 — 7,692 — JR Global REIT* 219,493 3,639 — 65,025 KB Bio Private Equity No.3 Ltd. — — 10,000 — K The 15th REIT Co., Ltd.* — — 8,600 8,600 IGIS No.371 Professional Investors’ Real Estate Investment Company* 10,000 10,000 — — Koreit Tower Real Estate Investment Trust Company* 30,000 30,000 — — Project Vanilla Co., Ltd. 2,450 — — — December & Company Inc. 30,000 — — — KB Social Impact Investment Fund 1,500 — 1,500 — 2020 KB Fintech Renaissance Fund 550 — — — KB Material and Parts No.1 PEF 3,400 — — — KB Private Equity Fund No.3* — 8,000 — — KB-TS Technology Venture Private Equity Fund 2,240 5,488 3,080 5,376 Keystone-Hyundai Securities No.1 Private Equity Fund* — — — 1,925 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund 8,000 3,200 10,000 10,800 Aju Good Technology Venture Fund — 2,885 — 4,769 G payment Joint Stock Company — — 9,029 — 498 Seventh Owners LLC — — 166,851 — KB-KTB Technology Venture Fund — — 5,600 — KB-SOLIDUS Healthcare Investment Fund — — 1,800 — Paramark KB Fund No.1 — — 2,040 — FineKB Private Equity Fund No.1 — — 8,375 — * Excluded from the Group’s related party as of December 31, 2021. 43.6 Unused commitments provided to related parties as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won or in a US Dollar or Associates and joint ventures Balhae Infrastructure Company Purchase of securities ￦ 6,433 ￦ 6,154 Korea Credit Bureau Co., Ltd. Unused lines of credit for credit card 564 565 Incheon Bridge Co., Ltd. Loan commitments in Korean won 20,000 20,000 Unused lines of credit for credit card 98 93 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 Commitments on loss absorption priority 14,980 10,000 SY Auto Capital Co., Ltd. Unused lines of credit for credit card 90 98 Food Factory Co., Ltd. Loan commitments in Korean won 388 — Unused lines of credit for credit card 73 82 KB No.17 Special Purpose Acquisition Company Unused lines of credit for credit card 441 — KB No.18 Special Purpose Acquisition Company Unused lines of credit for credit card 15 15 KB No.19 Special Purpose Acquisition Company Unused lines of credit for credit card — 1 CellinCells Co., Ltd. Unused lines of credit for credit card — 18 RAND Bio Science Co., Ltd. Unused lines of credit for credit card 24 24 Big Dipper Co., Ltd. Unused lines of credit for credit card 96 43 SwatchOn Inc. Unused lines of credit for credit card 7 127 Gomi corporation Inc. Unused lines of credit for credit card — 2 COSES GT Co., Ltd. Unused lines of credit for credit card — 15 GENINUS Inc. Unused lines of credit for credit card — 43 Spark Biopharma Inc. Unused lines of credit for credit card — 33 Mantisco Co., Ltd. Unused lines of credit for credit card — 2

Events after the reporting peri

Events after the reporting period	12 Months Ended
	Dec. 31, 2021
Text Block [Abstract]
Events after the reporting period	44. Events after the reporting period 3,455,426 treasury shares were retired on February 14, 2022 in accordance with the resolution of the board of directors on February 8, 2022.

Approval of Issuance of the Con

Approval of Issuance of the Consolidated Financial Statements	12 Months Ended
	Dec. 31, 2021
Authorisation Of Financial Statements Abstract
Approval of Issuance of the Consolidated Financial Statements	45. Approval of Issuance of the Consolidated Financial Statements The Group’s consolidated financial statements as of and for the year ended December 31, 2021 was certified by management on April 27, 2022.

Parent Company Information

Parent Company Information	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Parent Company Information	46. Parent Company Information The following tables present the Parent Company Only financial information: Condensed Statements of Financial Position December 31, December 31, (In millions of Korean won) Assets Cash and due from financial institutions ￦ 23,084 ￦ 608,076 Financial assets at fair value through profit or loss 474,262 440,760 Loans at amortized cost 179,542 249,128 Investments in subsidiaries* Banking subsidiaries 14,821,721 14,821,721 Nonbanking subsidiaries. 11,698,159 11,919,717 Other assets 911,723 831,977 Total assets ￦ 28,108,491 ￦ 28,871,379 Liabilities and shareholders’ equity Borrowings ￦ 100,000 ￦ — Debentures 6,128,043 5,552,791 Other liabilities 894,828 805,614 Shareholders’ equity 20,985,620 22,512,974 Total liabilities and shareholders’ equity ￦ 28,108,491 ￦ 28,871,379 * Investments in subsidiaries were accounted at cost method in accordance with IAS No.27. Condensed Statements of Comprehensive Income 2019 2020 2021 (In millions of Korean won) Income Dividends from subsidiaries ￦ 926,934 ￦ 1,573,411 ￦ 1,617,949 Interest from subsidiaries 3,618 3,519 7,566 Other income 22,709 22,749 31,284 Total income 953,261 1,599,679 1,656,799 Expense Interest expense 126,065 132,437 120,469 Non-interest expense 80,355 87,876 99,745 Total expense 206,420 220,313 220,214 Profit before income tax expense 746,841 1,379,366 1,436,585 Income tax benefit (expense) (854 ) 49 2,281 Profit for the year 745,987 1,379,415 1,438,866 Other comprehensive loss for the year, net of tax (520 ) (368 ) (298 ) Total comprehensive income for the year ￦ 745,467 ￦ 1,379,047 ￦ 1,438,568 Condensed Statements of Cash Flows 2019 2020 2021 (In millions of Korean won) Operating activities Net income ￦ 745,987 ￦ 1,379,415 ￦ 1,438,866 Reconciliation of net income to net cash provided by operating activities: Other operating activities, net (274 ) 9,930 (92,785 ) Net cash inflow from operating activities 745,713 1,389,345 1,346,081 Investing activities Net payments to subsidiaries (100,000 ) (2,347,543 ) (219,268 ) Other investing activities, net (200,609 ) (146,477 ) (39,477 ) Net cash outflow from investing activities (300,609 ) (2,494,020 ) (258,745 ) Financing activities Net increase (decrease) in borrowings (298,321 ) 100,000 (100,000 ) Increases in debentures 1,037,656 1,537,091 389,405 Repayments of debentures and lease liabilities (868,723 ) (940,610 ) (970,535 ) Issuance of hybrid securities 399,085 1,296,693 1,142,203 Cash dividends paid (766,249 ) (883,952 ) (1,053,417 ) Acquisition of treasury shares (274,317 ) — — Net cash inflow (outflow) from financing activities (770,869 ) 1,109,222 (592,344 ) Net increase (decrease) in cash and cash equivalents (325,765 ) 4,547 494,992 Cash and cash equivalents as of January 1 344,299 18,534 23,081 Cash and cash equivalents as of December 31 ￦ 18,534 ￦ 23,081 ￦ 518,073

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policy [Abstract]
Consolidation	3.1 Consolidation 3.1.1 Subsidiaries Subsidiaries are companies that are controlled by the Group. The Group controls an investee when it is exposed, or has rights, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. Also, the existence and effects of potential voting rights that are currently exercisable or convertible are considered when assessing whether the Group controls the investee. Subsidiaries are fully consolidated from the date when control is transferred to the Group and de-consolidated If a subsidiary uses accounting policies other than those adopted in the consolidated financial statements for like transactions and events in similar circumstances, appropriate adjustments are made to that subsidiary’s financial statements in preparing the consolidated financial statements to ensure conformity with the Group’s accounting policies. Profit or loss and each component of other comprehensive income are attributed to the owners of the parent and to the non-controlling non-controlling non-controlling Transactions with non-controlling non-controlling When the Group loses control, any investment retained in the former subsidiary is recognized at its fair value at the date when control is lost, with the resulting difference recognized in profit or loss. This fair value will be the fair value on initial recognition of a financial asset in accordance with IFRS No.9 or, when appropriate, the cost on initial recognition of an investment in an associate or joint venture. In addition, all amounts previously recognized in other comprehensive income in relation to that subsidiary are accounted for on the same basis as would be required if the Group had directly disposed of the related assets or liabilities. Therefore, amounts previously recognized in other comprehensive income are reclassified to profit or loss. The Group accounts for each business combination by applying the acquisition method. The consideration transferred is measured at fair value, and identifiable assets acquired, and liabilities and contingent liabilities assumed in a business combination are initially measured at acquisition-date fair values. For each business combination, the Group measures non-controlling In a business combination achieved in stages, the Group shall remeasure its previously held equity interest in the acquiree at its acquisition-date fair value and recognize the resulting gain or loss, if any, in profit or loss or other comprehensive income, as appropriate. In prior reporting periods, the Group may have recognized changes in the value of its equity interest in the acquiree in other comprehensive income. If so, the amount that was recognized in other comprehensive income shall be reclassified as profit or loss, or retained earnings, on the same basis as would be required if the Group had directly disposed of the previously held equity interest. The Group applies the book-value method to account for business combinations of entities under common control. Identifiable assets acquired and liabilities assumed in a business combination are measured at their book value on the consolidated financial statements of the Group. In addition, the difference between (a) the sum of consolidated net book value of the assets and liabilities transferred and accumulated other comprehensive income and (b) the consideration paid, is recognized as capital surplus. 3.1.2 Associates and joint ventures Associates are entities over which the Group has significant influence over the financial and operating policy decisions. Generally, if the Group holds 20% or more of the voting power of the investee, it is presumed that the Group has significant influence. Joint ventures are investments in which the Group has joint control over economic activities pursuant to contractual arrangement. Decisions about strategic financial and operating policies require unanimous consent of the parties sharing control. Investments in associates and joint ventures are initially recognized at cost and equity method is applied after initial recognition. The carrying amount is increased or decreased to recognize the Group’s share of the profit or loss of the investee and changes in the investee’s equity after the date of acquisition. Distributions received from an investee reduce the carrying amount of the investment. Unrealized gains and losses resulting from transactions between the Group and associates are eliminated to the extent of the Group’s share in associates. If unrealized losses are an indication of an impairment that requires recognition in the consolidated financial statements, those losses are recognized for the period. If associates or joint ventures use accounting policies other than those of the Group for like transactions and events in similar circumstances, if necessary, adjustments shall be made to make the associates or joint ventures’ accounting policies conform to those of the Group when the associates or joint ventures’ financial statements are used by the Group in applying the equity method. If the Group’s share of losses of associates and joint ventures equals or exceeds its interest in the associates (including long-term interests that, in substance, form part of the Group’s net investment in the associates), the Group discontinues recognizing its share of further losses. After the Group’s interest is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the Group has incurred legal or constructive obligations or made payments on behalf of the investee. The Group determines at each reporting period whether there is any objective evidence that the investments in the associates are impaired. If this is the case, the Group calculates the amount of impairment as the difference between the recoverable amount of the associates and its carrying amount and recognizes the amount as non-operating 3.1.3 Structured entity A structured entity is an entity that has been designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. When the Group decides whether it has power over the structured entities in which the Group has interests, it considers factors such as the purpose, the form, the substantive ability to direct the relevant activities of a structured entity, the nature of its relationship with a structured entity, and the amount of exposure to variable returns. 3.1.4 Funds management The Group manages and operates trust assets, collective investment, and other funds on behalf of investors. These trusts and funds are not consolidated, except for trusts and funds over which the Group has control. 3.1.5 Intragroup transactions Intragroup balances, income, expenses, and any unrealized gains and losses resulting from intragroup transactions are eliminated in full, in preparing the consolidated financial statements. If unrealized losses are an indication of an impairment that requires recognition in the consolidated financial statements, those losses are recognized for the period.
Foreign Currency	3.2 Foreign Currency 3.2.1 Foreign currency transactions A foreign currency transaction is recorded, at initial recognition in the functional currency, by applying to the foreign currency amount the spot exchange rate between the functional currency and the foreign currency at the date of the transaction. At the end of each reporting period, foreign currency monetary items are translated using the closing rate which is the spot exchange rate at the end of the reporting period. Non-monetary non-monetary Except for the exchange differences for the net investment in a foreign operation and the financial liability designated as a hedging instrument of net investment, exchange differences arising on the settlement of monetary items or on translating monetary items are recognized in profit or loss. When a gain or loss on a non-monetary non-monetary 3.2.2 Foreign operations The results and financial position of a foreign operation, whose functional currency differs from the Group’s presentation currency, are translated into the Group’s presentation currency based on the following procedures. If the functional currency of a foreign operation is not the currency of a hyperinflationary economy, assets and liabilities for each statement of financial position presented (including comparatives) are translated at the closing rate at the end of the reporting period, income and expenses for each statement of comprehensive income presented (including comparatives) are translated using the average exchange rates for the period. All resulting exchange differences are recognized in other comprehensive income. Any goodwill arising on the acquisition of a foreign operation and any fair value adjustments to the carrying amounts of assets and liabilities arising on the acquisition of that foreign operation are treated as assets and liabilities of the foreign operation. Thus, they are expressed in the functional currency of the foreign operation and are translated into the presentation currency at the closing rate. On the disposal of a foreign operation, the cumulative amount of the exchange differences relating to that foreign operation, recognized in other comprehensive income and accumulated in the separate component of equity, is reclassified from equity to profit or loss (as a reclassification adjustment) when the gain or loss on disposal is recognized. On the partial disposal of a subsidiary that includes a foreign operation, the Group re-attributes non-controlling 3.2.3 Translation of the net investment in a foreign operation A monetary item that is receivable from or payable to a foreign operation, for which settlement is neither planned nor likely to occur in the foreseeable future is, in substance, a part of the Group’s net investment in that foreign operation, then foreign currency difference arising from that monetary item is recognized in the other comprehensive income and shall be reclassified to profit or loss on disposal of the net investment.
Recognition and Measurement of Financial Instruments	3.3 Recognition and Measurement of Financial Instruments 3.3.1 Initial recognition The Group recognizes a financial asset or a financial liability in its consolidated statement of financial position when the Group becomes party to the contractual provisions of the instrument. A regular way purchase or sale of financial assets (a purchase or sale of a financial asset under a contract whose terms require delivery of the asset within the time frame established generally by regulation or convention in the marketplace concerned) is recognized and derecognized using trade date accounting. For financial reporting purpose, the Group classifies (a) financial assets as financial assets at fair value through profit or loss, financial assets at fair value through other comprehensive income, or financial assets at amortized cost and (b) financial liabilities as financial liabilities at fair value through profit or loss, or other financial liabilities. These classifications are based on the business model for managing financial instruments and the contractual cash flow characteristics of the financial instrument at initial recognition. At initial recognition, a financial asset or financial liability is measured at its fair value plus or minus, in the case of a financial asset or financial liability not at fair value through profit or loss, transaction costs that are directly attributable to the acquisition or issue of the financial asset or financial liability. The fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The fair value of a financial instrument on initial recognition is normally the transaction price (that is, the fair value of the consideration given or received) in an arm’s length transaction. 3.3.2 Subsequent measurement After initial recognition, financial instruments are measured at amortized cost or fair value based on classification at initial recognition. 3.3.2.1 Amortized cost The amortized cost of a financial asset or financial liability is the amount at which the financial asset or financial liability is measured at initial recognition minus the principal repayments, plus or minus the cumulative amortization using the effective interest method of any difference between that initial amount and the maturity amount and, for financial assets, adjusted for any loss allowance. 3.3.2.2 Fair value The Group uses quoted price in an active market which is based on listed market price or dealer price quotations of financial instruments traded in an active market as best estimate of fair value. A financial instrument is regarded as quoted in an active market if quoted prices are readily and regularly available from an exchange, dealer, broker, industry group, pricing service or regulatory agency, and those prices represent actual and regularly occurring market transactions on an arm’s length basis. If there is no active market for a financial instrument, fair value is determined either by using a valuation technique or independent third-party valuation service. Valuation techniques include using recent arm’s length market transactions between knowledgeable and willing parties, if available, referencing the current fair value of another instrument that is substantially the same, discounted cash flow analysis, and option pricing models. The Group uses valuation models that are commonly used by market participants and customized for the Group to determine fair values of common over-the-counter In addition, the fair value information recognized in the consolidated statement of financial position is classified into the following fair value hierarchy, reflecting the significance of the input variables used in the fair value measurement. Level 1 : Quoted prices (unadjusted) in active markets for identical assets or liabilities that the Group can access at the measurement date Level 2 : Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly Level 3 : Unobservable inputs for the asset or liability The fair value measurement is categorized in its entirety in the same level of the fair value hierarchy as the lowest level input that is significant to the entire measurement. For this purpose, the significance of an input is assessed against the fair value measurement in its entirety. If a fair value measurement uses observable inputs that require significant adjustment using unobservable inputs, that measurement is a Level 3 measurement. If the valuation technique does not reflect all factors which market participants would consider in pricing the asset or liability, the fair value is adjusted to reflect those factors. Those factors include counterparty credit risk, bid-ask The Group uses valuation technique which maximizes the use of market inputs and minimizes the use of entity-specific inputs. It incorporates all factors that market participants would consider in pricing the asset or liability and is consistent with economic methodologies applied for pricing financial instruments. Periodically, the Group calibrates the valuation technique and tests its validity using prices of observable current market transactions of the same instrument or based on other relevant observable market data. 3.3.3 Derecognition Derecognition is the removal of a previously recognized financial asset or financial liability from the consolidated statement of financial position. The derecognition criteria for financial assets and financial liabilities are as follows: 3.3.3.1 Derecognition of financial assets A financial asset is derecognized when the contractual rights to the cash flows from the financial assets expire or the Group transfers substantially all the risks and rewards of ownership of the financial asset, or the Group neither transfers nor retains substantially all the risks and rewards of ownership of the financial asset and the Group has not retained control. Therefore, if the Group does not transfer substantially all the risks and rewards of ownership of the financial asset, the Group continues to recognize the financial asset to the extent of its continuing involvement in the financial asset. If the Group transfers the contractual rights to receive the cash flows of the financial asset but retains substantially all the risks and rewards of ownership of the financial asset, the Group continues to recognize the transferred asset in its entirety and recognize a financial liability for the consideration received. The Group writes off a financial asset when the Group has no reasonable expectations of recovering a financial asset in its entirety or a portion thereof. In general, the Group considers write-off write-off write-off, written-off written-off 3.3.3.2 Derecognition of financial liabilities A financial liability is derecognized from the consolidated statement of financial position when it is extinguished (i.e., the obligation specified in the contract is discharged, canceled or expires). 3.3.4 Offsetting A financial asset and a financial liability are offset, and the net amount is presented in the consolidated statement of financial position when, and only when, the Group currently has a legally enforceable right to set off the recognized amounts and intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. The legally enforceable right must not be contingent on a future event and must be legally enforceable in the normal course of business, the event of default, and the event of insolvency or bankruptcy of the Group and all of the counterparties.
Cash and Due from Financial Institutions	3.4 Cash and Due from Financial Institutions Cash and due from financial institutions include cash on hand, foreign currency, and short-term, highly liquid investments that are readily convertible to known amounts of cash and which are subject to an insignificant risk of changes in value, and due from financial institutions. Cash and due from financial institutions are measured at amortized cost.
Non-derivative Financial Assets	3.5 Non-derivative 3.5.1 Financial assets at fair value through profit or loss Financial assets are classified as financial assets at fair value through profit or loss unless they are classified as financial assets at amortized cost or at fair value through other comprehensive income. The Group may designate certain financial assets upon initial recognition as at fair value through profit or loss when the designation eliminates or significantly reduces a measurement or recognition inconsistency (sometimes referred to as an ‘accounting mismatch’) that would otherwise arise from measuring assets or liabilities or recognizing the gains and losses on them on different bases. After initial recognition, a financial asset at fair value through profit or loss is measured at fair value and gains or losses arising from a change in fair value are recognized in profit or loss. Interest income using the effective interest method and dividend income from financial assets at fair value through profit or loss are also recognized in profit or loss. 3.5.2 Financial assets at fair value through other comprehensive income The Group classifies below financial assets as financial assets at fair value through other comprehensive income: • Debt instruments that are held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets, and where the assets’ cash flows represent solely payments of principal and interest on the principal amount outstanding and; • Equity instruments that are not held for short-term trading but held for strategic investment, and designated as financial assets at fair value through other comprehensive income After initial recognition, a financial asset at fair value through other comprehensive income is measured at fair value. Gains or losses arising from a change in fair value, other than dividend income, interest income calculated using the effective interest method and exchange differences arising on monetary items which are recognized directly in profit or loss, are recognized in other comprehensive income in equity. When the financial assets at fair value through other comprehensive income is disposed of, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss. However, cumulative gain or loss of equity instruments designated at fair value through other comprehensive income is reclassified to retained earnings not to profit or loss at disposal. A financial asset at fair value through other comprehensive income denominated in foreign currency is translated at the closing rate. Exchange differences resulting from changes in amortized cost are recognized in profit or loss, and other changes are recognized in equity. 3.5.3 Financial assets at amortized cost A financial asset, which is held within the business model whose objective is achieved by collecting contractual cash flows, and where the assets’ cash flows represent solely payments of principal and interest on the principal amount outstanding, is classified as a financial asset at amortized cost. After initial recognition, a financial asset at amortized cost is measured at amortized cost using the effective interest method and interest income is calculated using the effective interest method.
Expected Credit Losses of Financial Assets (Debt Instruments)	3.6 Expected Credit Losses of Financial Assets (Debt Instruments) The Group recognizes loss allowances for expected credit losses at the end of the reporting period for financial assets at amortized cost and fair value through other comprehensive income except for financial assets at fair value through profit or loss. Expected credit losses are estimated at present value of probability-weighted amount that is determined by evaluating a range of possible outcomes. The Group measures expected credit losses by reflecting all reasonable and supportable information that is available without undue cost or effort at the reporting date about past events, current conditions, and forecasts of future economic conditions. The approaches of measuring expected credit losses in accordance with IFRS are as follows: • General approach: for financial assets and unused loan commitments not subject to the below 2 approaches • Simplified approach: for trade receivables, contract assets, and lease receivables • Credit-impaired approach: for financial assets that are credit-impaired at the time of acquisition Application of general approach is differentiated depending on whether credit risk has increased significantly after initial recognition. If the credit risk on a financial instrument has not increased significantly since initial recognition, the Group measures loss allowances for that financial instrument at an amount equal to 12-month The Group assesses whether the credit risk has increased significantly using the following criteria, and if one or more of the following criteria are met, it is deemed as significant increase in credit risk. Criterion of more than 30 days past due is applied to all subsidiaries, and other criteria are applied selectively considering specific indicators of each subsidiary or additionally considering specific indicators of each subsidiary. If the contractual cash flows of a financial asset have been renegotiated or modified, the Group assesses whether the credit risk has increased significantly using the same following criteria. • More than 30 days past due • Decline in credit rating at the end of the reporting period by certain notches or more compared to the time of initial recognition • Subsequent managing ratings below certain level in the early warning system • Debt restructuring (except for impaired financial assets) and • Credit delinquency information of Korea Federation of Banks, etc. Under simplified approach, the Group always measures loss allowances at an amount equal to lifetime expected credit losses. Under credit-impaired approach, the Group only recognizes the cumulative changes in lifetime expected credit losses since initial recognition as loss allowances at the end of the reporting period. In assessing credit impairment, the Group uses definition of default as in the new Basel Accord which rules calculation of Capital Adequacy Ratio. The Group generally considers the loan to be credit-impaired if one or more of the following criteria are met: • 90 days or more past due • Legal proceedings related to collection • A borrower registered on the credit management list of Korea Federation of Banks • A corporate borrower with the credit rating C and D • Refinancing and • Debt restructuring, etc. 3.6.1 Forward-looking information The Group uses forward-looking information, when determining whether credit risk has increased significantly and measuring expected credit losses. The Group assumes that the risk components have a constant correlation with the economic cycle and uses statistical methodologies to estimate the relation between key macroeconomic variables and risk components for the expected credit losses. The correlation between the major macroeconomic variables and the credit risk are as follows: Key macroeconomic variables Correlation between the major macroeconomic Domestic GDP growth rate ( - Composite stock index ( - Rate of change of construction investment ( - Rate of change of housing transaction price index ( - Interest rate spread ( + Private consumption growth rate ( - Change of call rate compared to the previous year (%p) ( + Rate of change of household loan ( - Forward-looking information used in calculation of expected credit losses is based on the macroeconomic forecasts utilized by management of the Group for its business plan considering reliable external agency’s forecasts and others. The forward-looking information is generated by KB Research with a comprehensive approach to capture the possibility of various economic forecast scenarios that are derived from the internal and external viewpoints of the macroeconomic situation. The Group determines the macroeconomic variables to be used in forecasting future conditions of the economy, considering the direction of the forecast scenario and the significant relationship between macroeconomic variables and time series data. And there are some changes compared to the macroeconomic variables used in the previous year. In order to reflect additional credit risk for financial assets whose industries are highly affected by COVID-19, 3.6.2 Measuring expected credit losses on financial assets at amortized cost The expected credit losses of financial assets at amortized cost are measured as present value of the difference between the contractual cash flows to be received and the cash flows expected to be received. The Group estimates expected future cash flows for financial assets that are individually significant. The Group selects the individually significant financial assets by comprehensively considering quantitative and qualitative factors (such as debt restructuring or negative net assets, etc.) among financial assets with the credit risk has increased significantly or credit-impaired (individual assessment of impairment). For financial assets that are not individually significant, the Group collectively estimates expected credit losses by grouping loans with a homogeneous credit risk profile (collective assessment of impairment). 3.6.2.1 Individual assessment of impairment Individual assessment of impairment losses is performed using management’s best estimate on the present value of expected future cash flows. The Group uses all the available information including financial condition of the borrower such as operating cash flow and net realizable value of any collateral held. 3.6.2.2 Collective assessment of impairment Collective assessment of impairment losses is performed by using a methodology based on historical loss experience and reflecting forward-looking information. Such a process incorporates factors such as type of collateral, type of product, type of borrower, credit rating, size of portfolio, and recovery period and applies Probability of Default (“PD”) on a group of assets and Loss Given Default (“LGD”) by type of recovery method. Also, the Group applies certain assumptions to model expected credit losses assessment and to determine input based on loss experience and forward-looking information. These models and assumptions are periodically reviewed to reduce the gap between loss estimate and actual loss experience. The lifetime expected credit losses are measured by applying the PD to the carrying amount calculated by deducting the expected principal repayment amount from the carrying amount as of the reporting date and the LGD adjusted to reflect changes in the carrying amount. 3.6.3 Measuring expected credit losses on financial assets at fair value through other comprehensive income The Group measures expected credit losses on financial assets at fair value through other comprehensive income in a manner that is consistent with the requirements that are applicable to financial assets at amortized cost. However, loss allowances are recognized in other comprehensive income. Upon disposal or repayment of financial assets at fair value through other comprehensive income, the amount of loss allowances is reclassified from other comprehensive income to profit or loss.
Derivative Financial Instruments	3.7 Derivative Financial Instruments The Group enters into numerous derivative financial instrument contracts such as currency forwards, interest rate swaps, currency swaps, and others for trading purposes or to manage its interest rate risk, currency risk, and others. The Group’s derivative financial instruments business focuses on addressing the needs of the Group’s corporate clients to hedge their risk exposure and to hedge the Group’s risk exposure that results from such client contracts. These derivative financial instruments are presented as derivative financial instruments in the consolidated financial statements irrespective of transaction purpose and subsequent measurement requirement. The Group designates certain derivative financial instruments as hedging instruments to hedge the risk of changes in fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge) and the risk of changes in cash flow (cash flow hedge). The Group designates certain derivative and non-derivative At the inception of the hedging relationship, there is formal designation and documentation of the hedging relationship and the Group’s risk management objective and strategy for undertaking the hedge. This documentation includes identification of the hedging instrument, the hedged item, the nature of the risk being hedged, the inception date of hedging relationship and how the Group will assess the hedging instrument’s effectiveness in offsetting the changes in the hedged item’s fair value or cash flows attributable to the hedged risk. Derivative financial instruments are initially recognized at fair value. After initial recognition, derivative financial instruments are measured at fair value, and changes therein are accounted for as described below. 3.7.1 Derivative financial instruments held for trading All derivative financial instruments, except for derivatives that are designated and qualify for hedge accounting, are measured at fair value. Gains or losses arising from changes in fair value are recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss. 3.7.2 Derivative financial instruments for fair value hedges If derivative financial instruments are designated and qualify for fair value hedges, changes in fair value of the hedging instrument and changes in fair value of the hedged item attributable to the hedged risk are recognized in profit or loss as part of other operating income or expenses. If the hedged items are equity instruments for which the Group has elected to present changes in fair value in other comprehensive income, changes in fair value of the hedging instrument and changes in fair value of the hedged item attributable to the hedged risk are recognized in other comprehensive income. Fair value hedge accounting is discontinued prospectively if the hedging instrument expires or is sold, terminated or exercised, or the hedging relationship ceases to meet the qualifying criteria. Once fair value hedge accounting is discontinued, the adjustment to the carrying amount of a hedged item is amortized to profit or loss by the maturity of the financial instrument using the effective interest method. 3.7.3 Derivative financial instruments for cash flow hedges The effective portion of changes in fair value of derivative financial instruments that are designated and qualify for cash flow hedges is recognized in other comprehensive income, limited to the cumulative change in fair value (present value) of the hedged item (the present value of the cumulative change in the hedged expected future cash flows) from inception of the hedge. The ineffective portion is recognized in profit or loss as other operating income or expenses. The associated gains or losses that were previously recognized in other comprehensive income are reclassified from equity to profit or loss (other operating income or expenses) as a reclassification adjustment in the same period or periods during which the hedged forecast cash flows affect profit or loss. Cash flow hedge accounting is discontinued prospectively if the hedging instrument expires or is sold, terminated or exercised, or the hedging relationship ceases to meet the qualifying criteria. When the cash flow hedge accounting is discontinued, the cumulative gains or losses on the hedging instrument that have been recognized in other comprehensive income are reclassified to profit or loss over the period in which the forecast transaction occurs. If the forecast transaction is no longer expected to occur, the cumulative gains or losses that have been recognized in other comprehensive income are immediately reclassified to profit or loss. 3.7.4 Derivative and non-derivative If derivative and non-derivative 3.7.5 Embedded derivatives An embedded derivative is separated from the host contract and accounted for as a derivative if, and only if, (a) the economic characteristics and risks of the embedded derivative are not closely related to those of the host contract, (b) a separate instrument with the same terms as the embedded derivative would meet the definition of a derivative and (c) the hybrid contract contains a host that is not a financial asset and is not designated as at fair value through profit or loss. Gains or losses arising from a change in fair value of an embedded derivative separated from the host contract are recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss. 3.7.6 Day one gains or losses If the Group uses a valuation technique that incorporates unobservable inputs for the fair value of the OTC derivatives at initial recognition, there may be a difference between the transaction price and the amount determined using that valuation technique. In these circumstances, the difference is not recognized in profit or loss but deferred and amortized using the straight-line method over the life of the financial instrument. If the fair value is subsequently determined using observable inputs, the remaining deferred amount is recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss or other operating income or expenses.
Property and Equipment	3.8 Property and Equipment 3.8.1 Recognition and measurement Property and equipment that qualify for recognition as an asset are measured at cost and subsequently carried at its cost less any accumulated depreciation and any accumulated impairment losses. The cost of property and equipment includes any costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management and the initial estimate of the costs of dismantling and removing the item and restoring the site on which it is located. Subsequent expenditures are capitalized only when they prolong the useful life or enhance values of the assets but the costs of the day-to-day 3.8.2 Depreciation Land is not depreciated, whereas other property and equipment are depreciated using the method that reflects the pattern in which the asset’s future economic benefits are expected to be consumed by the Group. The depreciable amount of an asset is determined after deducting its residual value. Each part of an item of property and equipment with a cost that is significant in relation to the total cost of the item is depreciated separately. The depreciation method and estimated useful life of property and equipment are as follows: Property and equipment Depreciation method Estimated useful life Buildings Straight-line 20~40 years Leasehold improvements Declining-balance/ Straight-line 4~15 years Equipment and vehicles Declining-balance/ Straight-line 3~15 years year-end
Investment Properties	3.9 Investment Properties 3.9.1 Recognition and measurement Properties held to earn rentals or for capital appreciation or both are classified as investment properties. Investment properties are measured initially at their cost and subsequently the cost model is used. 3.9.2 Depreciation Land is not depreciated, whereas other investment properties are depreciated using the method that reflects the pattern in which the asset’s future economic benefits are expected to be consumed by the Group. The depreciable amount of an asset is determined after deducting its residual value. The depreciation method and estimated useful life of investment properties are as follows: Investment properties Depreciation method Estimated useful life Buildings Straight-line 20~40 years The residual value, the useful life, and the depreciation method applied to an asset are reviewed at each financial year-end
Intangible Assets	3.10 Intangible Assets Intangible assets are measured initially at cost and subsequently carried at their cost less any accumulated amortization and any accumulated impairment losses. Intangible assets, except for goodwill and membership rights, are amortized using the straight-line or declining-balance method with no residual value over their estimated useful life since the assets are available for use. Intangible assets Amortization method Estimated useful life Industrial property rights Straight-line 3 ~ 19 years Software Straight-line 3 ~ 5 years Value of business acquired Declining-balance 30, 60 years Others Straight-line / Declining-balance 1 ~ 13 years The amortization period and the amortization method for an intangible asset with a finite useful life are reviewed at least at each financial year-end. 3.10.1 Value of business acquired (“VOBA”) In the case of acquisition of insurance company, the Group recognizes the difference amount as VOBA in intangible assets, if the fair value of the acquired insurance liability is less than the carrying amount based on the acquiree’s accounting policy. In the opposite case, the difference amount is recognized as negative VOBA and included in premium reserve. VOBA is an estimated present value of profits inherent in the future cash flow of insurance contracts at the acquisition date. VOBA is amortized over the above estimated useful life using declining balance method, and the amortization is recognized as insurance expense. 3.10.2 Goodwill 3.10.2.1 Recognition and measurement Goodwill related to business combinations before January 1, 2010, is stated at its carrying amount, which was recognized under the Group’s previous accounting policy, prior to the transition to IFRS. Goodwill acquired from business combinations after January 1, 2010, is initially measured as the excess of the consideration transferred over the fair value of net identifiable assets acquired and liabilities assumed. If the fair value of net identifiable assets acquired and liabilities assumed exceeds the consideration transferred, the difference is recognized in profit or loss. For each business combination, the Group decides at the acquisition date whether the non-controlling non-controlling Acquisition-related costs incurred to effect a business combination are charged to expenses in the periods in which the costs are incurred and the services are received, except for the costs to issue debt or equity securities. 3.10.2.2 Additional acquisitions of non-controlling Additional acquisitions of non-controlling 3.10.2.3 Subsequent measurement Goodwill is not amortized and is stated at cost less accumulated impairment losses. However, goodwill that forms part of the carrying amount of an investment in associates is not separately recognized and an impairment loss recognized is not allocated to any asset, including goodwill, which forms part of the carrying amount of the investment in the associates. 3.10.3 Subsequent expenditures Subsequent expenditures are capitalized only when they enhance values of the assets. Internally generated intangible assets, such as goodwill and trade name, are not recognized as assets but expensed as incurred.
Impairment of Non-financial Assets	3.11 Impairment of Non-financial The Group assesses at the end of each reporting period whether there is any indication that a non-financial (c) non-current The recoverable amount is estimated for the individual asset. If it is not possible to estimate the recoverable amount of the individual asset, the Group determines the recoverable amount of the cash-generating unit to which the asset belongs. A cash-generating unit is the smallest identifiable group of assets that generates cash inflows that are largely independent of the cash inflows from other assets or groups of assets. The recoverable amount of an asset is the higher of its fair value less costs of disposal and its value in use. Value in use is the present value of the future cash flows expected to be derived from an asset or cash-generating unit that are discounted by a pre-tax If the recoverable amount of an asset is less than its carrying amount, the carrying amount of the asset is reduced to its recoverable amount. That reduction is an impairment loss and recognized immediately in profit or loss. For the purpose of impairment testing, goodwill acquired in a business combination is allocated to each of the cash-generating units that is expected to benefit from the synergies of the combination. The impairment loss is allocated first to reduce the carrying amount of any goodwill allocated to the cash-generating unit and then to the other assets of the unit pro rata on the basis of the carrying amount of each asset in the unit. An impairment loss recognized for goodwill is not reversed in a subsequent period. The Group assesses at the end of each reporting period whether there is any indication that an impairment loss recognized in prior periods for an asset, other than goodwill, may no longer exist or may have decreased, and an impairment loss recognized in prior periods for an asset other than goodwill shall be reversed if, and only if, there has been a change in the estimates used to determine the asset’s recoverable amount since the last impairment loss was recognized. The increased carrying amount of an asset other than goodwill attributable to a reversal of an impairment loss cannot exceed the carrying amount that would have been determined (net of amortization or depreciation) had no impairment loss been recognized for the asset in prior years.
Non-current Assets Held for Sale	3.12 Non-current A non-current non-current A non-current Impairment loss is recognized for any initial or subsequent write-down of the asset (or disposal group) to fair value less costs to sell. Gain is recognized for any subsequent increase in fair value less costs to sell of an asset, but not in excess of the cumulative impairment loss that has been recognized.
Financial Liabilities	3.13 Financial Liabilities The Group classifies financial liabilities into financial liabilities at fair value through profit or loss or other financial liabilities in accordance with the substance of the contractual arrangement and the definitions of financial liabilities. The Group recognizes financial liabilities in the consolidated statement of financial position when the Group becomes a party to the contractual provisions of the financial liability. 3.13.1 Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss include financial liabilities held for trading or designated as such at initial recognition. After initial recognition, financial liabilities at fair value through profit or loss are measured at fair value, and changes therein are recognized in profit or loss. At initial recognition, transaction costs that are directly attributable to the acquisition are recognized in profit or loss as incurred. In relation to securities lending or borrowing transactions, when the Group borrows securities from the Korea Securities Depository and others, these transactions are managed as off-balance In addition, the change in fair value of the financial liability designated at fair value through profit or loss that is attributable to change in the credit risk of that liability, the Group presents this change in other comprehensive income, and does not recycle this to profit or loss in accordance with IFRS No.9. However, if this treatment creates or enlarges an accounting mismatch, the Group recognizes this change in profit or loss. 3.13.2 Other financial liabilities Non-derivative When an asset is sold under repurchase agreement, the Group continues to recognize the asset with the amount sold being accounted for as borrowings. The Group derecognizes a financial liability from the consolidated statement of financial position only when it is extinguished (i.e., when the obligation specified in the contract is discharged, canceled or expires).
Insurance Contracts	3.14 Insurance Contracts KB Insurance Co., Ltd., KB Life Insurance Co., Ltd., and Prudential Life Insurance Company of Korea Ltd., the subsidiaries of the Group, issue insurance contracts. Insurance contracts are defined as “a contract under which one party (the insurer) accepts significant insurance risk from another party by agreeing to compensate the policyholder if a specified uncertain future event adversely affects the policyholder”. A contract that qualifies as an insurance contract remains an insurance contract until all rights and obligations are extinguished or expire. Such a contract that does not contain significant insurance risk is classified as an investment contract and is within the scope of IFRS No.9 Financial Instruments Insurance Contracts 3.14.1 Insurance premiums The Group recognizes collected premiums as revenue on the due date of collection of premiums from insurance contracts and the collected premium which is not earned at the end of the reporting period is recognized as unearned premium. 3.14.2 Insurance liabilities The Group recognizes a liability for future claims, refunds, dividends to policyholders, and related expenses as follows: 3.14.2.1 Premium reserve The Group accumulates the amount calculated based on the net insurance premium already received for future claim payments for insurance contracts maintained at the end of the reporting period. It is calculated as the greater of the amount using standard interest rate and standard risk ratio defined by director of the Financial Supervisory Services and the amount using the basic ratios that have been used in premium calculation. 3.14.2.2 Reserve for outstanding claims When the insured event has occurred before the end of the reporting period, but the claim amount is not confirmed, reserve for outstanding claims is calculated based on the estimated amount to be paid. 3.14.2.3 Unearned premium reserve Unearned premium reserve is the premium which is to be allocated to the following period among the premium which is due before the end of the reporting period. 3.14.2.4 Reserve for dividend to policyholders Reserve for dividend to policyholders including dividend of interest rate differential, rate of risk differential, and business expenses differential is recognized for the purpose of provisioning for policyholders’ dividends in the future in accordance with statutes or insurance terms and conditions. 3.14.3 Liability adequacy test (“LAT”) The Group conducts a liability adequacy test for all contracts to which IFRS No.4 Insurance Contracts Future cash flows from long-term insurance are discounted at interest rate scenario, which is a risk-free rate scenario adjusted by liquidity premium, whereas future cash flows from general insurance are not discounted to present value. In the case of insurance premium and unearned premium reserve, all future cash flows such as payment of claims, administration expenses, and premium received from policyholders are considered for the liability adequacy test. And in the case of reserve for outstanding claims, the adequacy of individually estimated claims is evaluated by applying models among various statistical methods that are considered appropriate for claim development trend. 3.14.4 Deferred acquisition costs The Group recognizes acquisition cost incurred by the long-term insurance contract as an asset and amortizes it evenly over the premium payment period. If the premium payment period exceeds seven years, the amortization period shall be seven years. If the insurance contract is surrendered or lapsed due to payment overdue, the remaining balances of deferred acquisition cost are fully amortized in the period in which the contract is surrendered or lapsed.
Provisions	3.15 Provisions Provisions are recognized when the Group has a present obligation (legal or constructive) as a result of a past event and it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation and a reliable estimate can be made of the amount of the obligation. Inevitable risks and uncertainties surrounding related events and circumstances are considered in measuring the best estimate of the provisions, and where the effect of the time value of money is material, the amount of provisions is the present value of the expenditures expected to be required to settle the obligation. Provisions for confirmed and unconfirmed acceptances and guarantees, and unused credit lines of consumer and corporate loans are recognized using a valuation model that applies the credit conversion factor, PD, and LGD. Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimate. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provisions are reversed. An onerous contract is a contract in which the unavoidable costs of meeting the obligations under the contract exceed the economic benefits expected to be received under it. The unavoidable costs under a contract reflect the least net cost of exiting from the contract, which is the lower of the cost of fulfilling it and any compensation or penalties arising from failure to fulfill it. If the Group has a contract that is onerous, the present obligation under the contract is recognized and measured as provisions.
Financial Guarantee Contracts	3.16 Financial Guarantee Contracts Financial guarantee contracts require the issuer to make specified payments to reimburse the holder for a loss it incurs because a specified debtor fails to make payments when due in accordance with the original or modified terms of a debt instrument. Financial guarantee contracts are initially recognized at fair value and classified as other liabilities and are amortized over the contractual term. After initial recognition, financial guarantee contracts are measured at the higher of: • The amount determined in accordance with IFRS No.9 Financial Instruments • The amount initially recognized less, when appropriate, the cumulative amount of income recognized in accordance with IFRS No.15 Revenue from Contracts with Customers.
Equity Instrument Issued by the Group	3.17 Equity Instrument Issued by the Group An equity instrument is any contract or agreement that evidences a residual interest in the assets of an entity after deducting all of its liabilities. 3.17.1 Ordinary shares Ordinary shares are classified as equity. Incremental costs directly attributable to the issue of new shares or the exercise of stock option are deducted from the equity, net of any tax effects. 3.17.2 Hybrid securities The financial instruments can be classified as either financial liabilities or equity in accordance with the terms of the contract. The Group classifies hybrid securities as an equity if the Group has the unconditional right to avoid any contractual obligation to deliver cash or another financial asset in relation to the financial instruments. However, hybrid securities issued by subsidiaries are classified as non-controlling non-controlling 3.17.3 Treasury shares If the Group acquires its own equity instruments, these are accounted for as treasury shares and are deducted directly from equity. No gains or losses are recognized in profit or loss on the purchase, sale, issue or retirement of own equity instruments. If an entity within the Group acquires and retains treasury shares, the consideration paid or received is directly recognized in equity. 3.17.4 Compound financial instruments A compound financial instrument is classified as a financial liability or an equity instrument depending on the substance of the contractual arrangement of such financial instrument. The liability component of the compound financial instrument is measured at fair value of the similar liability without conversion option at initial recognition and subsequently measured at amortized cost using effective interest method until it is extinguished by conversion or matured. Equity component is initially measured at fair value of compound financial instrument in its entirety less fair value of liability component net of tax effect, and it is not remeasured subsequently.
Revenue Recognition	3.18 Revenue Recognition The Group recognizes revenues in accordance with the following steps determined in accordance with IFRS No.15 Revenue from Contracts with Customers • Step 1: Identify the contract with a customer. • Step 2: Identify the performance obligations in the contract. • Step 3: Determine the transaction price. • Step 4: Allocate the transaction price to the performance obligations in the contract. • Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation. 3.18.1 Interest income and expense Interest income and expense on debt securities at fair value through profit or loss (excluding beneficiary certificates, equity investments, and other debt instruments), loans, financial instruments at amortized cost, and debt securities at fair value through other comprehensive income are recognized in the consolidated statement of comprehensive income using the effective interest method in accordance with IFRS No.9 Financial Instruments The effective interest rate is the rate that exactly discounts estimated future cash receipts or payments through the expected life of the financial instrument or, where appropriate, a shorter period, to the gross carrying amount of a financial asset or to the amortized cost of a financial liability. When calculating the effective interest rate, the Group estimates expected cash flows by considering all contractual terms of the financial instrument but does not consider expected credit losses. The calculation includes all fees and points paid (main components of effective interest rate only) or received between parties to the contract that are an integral part of the effective interest rate, transaction costs, and all other premiums or discounts. In those rare cases when it is not possible to reliably estimate the cash flows and the expected life of a financial instrument, the Group uses the contractual cash flows over the full contractual term of the financial instrument. Interest income on impaired financial assets is recognized using the interest rate used to discount the expected cash flows for the purpose of measuring the impairment loss. Interest income on debt securities at fair value through profit or loss is also classified as interest income in the consolidated statement of comprehensive income. 3.18.2 Fee and commission income The Group recognizes financial service fees in accordance with the purpose of charging the fees and the accounting standards of the financial instrument related to the fees earned. 3.18.2.1 Fees that are an integral part of the effective interest of a financial instrument Such fees are generally treated as adjustments of effective interest rate. Such fees may include compensation for activities such as evaluating the borrower’s financial condition, evaluating and recording guarantees, collateral and other security arrangements, negotiating the terms of the instrument, preparing and processing documents, and closing the transaction and origination fees received on issuing financial liabilities at amortized cost. However, fees relating to the creation or acquisition of a financial instrument at fair value through profit or loss are recognized as revenue immediately. 3.18.2.2 Fees related to performance obligations satisfied over time If the control of a good or service is transferred over time, the Group recognizes revenue related to performance obligations over the period of performance obligations. Fees charged in return for the services for a certain period of time, such as asset management fees, consignment business fees, etc. are recognized over the period of performance obligations. 3.18.2.3 Fees related to performance obligations satisfied at a point in time Fees earned at a point in time are recognized as revenue when a customer obtains controls of a promised good or service and the Group satisfies a performance obligation. Commission on negotiation or participation in negotiation for the third party such as trading stocks or other securities, arranging merger and acquisition of business, is recognized as revenue when the transaction has been completed. If the Group arranges a syndicated loan but does not participate in the syndicated loan or participates in the syndicated loan with the same effective profit as other participants, a syndication arrangement fee is recognized as revenue at the completion of the syndication service. 3.18.3 Net gains or losses on financial instruments at fair value through profit or loss Net gains or losses on financial instruments at fair value through profit or loss (including changes in fair value, dividends, and gains or losses from foreign currency translation) include gains or losses on financial instruments as follows: • Gains or losses relating to financial instruments at fair value through profit or loss (excluding interest income using the effective interest rate method) • Gains or losses relating to derivative financial instruments for trading (including derivative financial instruments for hedging purpose but do not qualify for hedge accounting) 3.18.4 Dividend income Dividend income is recognized in profit or loss when the right to receive payment is established. Dividend income is recognized as net gains or losses on financial instruments at fair value through profit or loss or other operating income depending on the classification of equity securities.
Employee Compensation and Benefits	3.19 Employee Compensation and Benefits 3.19.1 Post-employment benefits 3.19.1.1 Defined contribution plans When an employee has rendered service to the Group during a period, the Group recognizes the contribution payable to a defined contribution plan in exchange for that service as post-employment benefits for the period. 3.19.1.2 Defined benefit plans All post-employment benefits, other than defined contribution plans, are classified as defined benefit plans. The amount recognized as a net defined benefit liability is the present value of the defined benefit obligation less the fair value of plan assets at the end of the reporting period. The present value of the defined benefit obligation is calculated annually by independent actuaries using the projected unit credit method. The rate used to discount post-employment benefit obligations is determined by reference to market yields at the end of the reporting period on high quality corporate bonds. The currency and term of the corporate bonds are consistent with the currency and estimated term of the post-employment benefit obligations. Actuarial gains and losses resulted from changes in actuarial assumptions and experience adjustments are recognized in other comprehensive income. When the present value of the defined benefit obligation minus the fair value of plan assets results in an asset, it is recognized to the extent of the present value of any economic benefits available in the form of refunds from the plan or reductions in future contributions to the plan. Past service cost is the change in the present value of the defined benefit obligation for employee service in prior periods, resulting from the introduction or changes to a defined benefit plan. Such past service cost is immediately recognized as an expense for the period. 3.19.2 Short-term employee benefits Short-term employee benefits are employee benefits that are expected to be settled wholly before twelve months after the end of the annual reporting period in which the employees render the related service. When an employee has rendered service to the Group during an accounting period, the Group recognizes the undiscounted amount of short-term employee benefits expected to be paid in exchange for that service as an expense for the period. The expected cost of profit-sharing and bonus payments is recognized as liabilities when the Group has a present legal or constructive obligation to make payments as a result of past events, such as service rendered by employees, and a reliable estimate of the obligation can be made. 3.19.3 Share-based payment The Group provides its executives and employees with stock grants, mileage stock, and long-term share-based payments programs. When stock grants are exercised, the Group can either select to distribute newly issued shares or treasury shares or compensate in cash based on the share price. When mileage stock and long-term share-based payments are exercised, the Group pays the amount equivalent to share price of KB Financial Group Inc. in cash. For a share-based payment transaction in which the terms of the arrangement provide the Group with the choice of whether to settle in cash or by issuing equity instruments, the Group accounts for the transaction in accordance with the requirements applying to cash-settled share-based payment transactions because the Group determines that it has a present obligation to settle in cash based on a past practice and a stated policy of settling in cash. Therefore, the Group measures the liability incurred as consideration for the service received at fair value and recognizes related expense and accrued expense over the vesting periods. For mileage stock and long-term share-based payments program, the Group accounts for the transaction in accordance with the requirements applying to cash-settled share-based payment transactions, which are recognized as expense and accrued expenses at the time of vesting. Until the liability is settled, the Group remeasures the fair value of the liability at the end of each reporting period and at the date of settlement, with any changes in fair value recognized in profit or loss as share-based payments. 3.19.4 Termination benefits Termination benefits are payable when employment is terminated by the Group before the normal retirement date, or an employee’s decision to accept an offer of benefits in exchange for the termination of employment. The Group recognizes a liability and expense for termination benefits at the earlier of the following dates; when the Group can no longer withdraw the offer of those benefits and when the Group recognizes costs for a restructuring that is within the scope of IAS No.37 and involves the payment of termination benefits. If the termination benefits are not expected to be settled wholly before twelve months after the end of the annual reporting period, then the termination benefits are discounted to present value.
Income Tax Expense	3.20 Income Tax Expense Income tax expense comprises current tax expense and deferred income tax expense. Current and deferred income tax are recognized as income or expense and included in profit or loss for the period, except to the extent that the tax arises from (a) a transaction or event which is recognized, in the same or a different period, outside profit or loss, either in other comprehensive income or directly in equity and (b) a business combination. 3.20.1 Current income tax Current income tax is the amount of income tax payable (recoverable) in respect of the taxable profit (tax loss) for a period. A difference between the taxable profit and accounting profit may arise when income or expense is included in accounting profit in one period but is included in taxable profit in a different period. Differences may also arise if there is revenue that is exempt from taxation, or expense that is not deductible in determining taxable profit (loss). Current income tax liabilities for the current and prior periods are measured using the tax rates that have been enacted or substantively enacted by the end of the reporting period. The Group offsets current income tax assets and current income tax liabilities if, and only if, the Group (a) has a legally enforceable right to set off the recognized amounts and (b) intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. 3.20.2 Deferred income tax Deferred income tax is recognized, using the asset-liability method, on temporary differences arising between the tax-based The Group recognizes a deferred income tax liability for all taxable temporary differences associated with investments in subsidiaries, associates, and joint ventures, except to the extent that the Group is able to control the timing of the reversal of the temporary difference, and it is probable that the temporary difference will not reverse in the foreseeable future. The carrying amount of a deferred income tax asset is reviewed at the end of each reporting period. The Group reduces the carrying amount of a deferred income tax asset to the extent that it is no longer probable that sufficient taxable profit will be available to allow the benefit of part or all of that deferred income tax asset to be utilized. Deferred income tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. The measurement of deferred income tax liabilities and deferred income tax assets reflects the tax consequences that would follow from the manner in which the Group expects, at the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities. The Group offsets deferred income tax assets and deferred income tax liabilities if, and only if the Group has a legally enforceable right to set off current income tax assets against current income tax liabilities and the deferred income tax assets and the deferred income tax liabilities relate to income taxes levied by the same taxation authority on either the same taxable entity or different taxable entities which intend either to settle current income tax liabilities and assets on a net basis, or to realize the assets and settle the liabilities simultaneously, in each future period in which significant amounts of deferred income tax liabilities or assets are expected to be settled or recovered. 3.20.3 Uncertain tax positions Uncertain tax positions arise from tax treatments applied by the Group which may be challenged by the tax authorities due to the complexity of the transaction or different interpretation of the tax laws, such as a claim for rectification, a claim for a refund related to additional tax or a tax investigation by the tax authorities. The Group recognizes its uncertain tax positions in the consolidated financial statements in accordance with IAS No.12 and IFRIC No.23. The income tax asset is recognized if a tax refund is probable for taxes levied by the tax authority, and the amount to be paid as a result of the tax investigation and others is recognized as the current tax payable. However, penalty tax and additional refund on tax are regarded as penalty or interest and are accounted for in accordance with IAS No.37.
Earnings per Share	3.21 Earnings per Share The Group calculates basic earnings per share amounts and diluted earnings per share amounts for profit or loss attributable to ordinary equity holders of the Parent Company and presents them in the consolidated statement of comprehensive income. Basic earnings per share is calculated by dividing profit or loss attributable to ordinary equity holders of the Parent Company by the weighted average number of ordinary shares outstanding during the period. Diluted earnings per share is calculated by adjusting the profit or loss attributable to ordinary equity holders of the Parent Company and weighted average number of shares outstanding, taking into account all potential dilution effects, such as exchangeable bonds and share-based payments given to employees.
Lease	3.22 Lease The Group as a lessor recognizes lease payments from operating leases as income on a straight-line basis over the lease term. Initial direct costs incurred in obtaining an operating lease are added to the carrying amount of the underlying asset and recognized as expense over the lease term on the same basis as lease income. The respective leased assets are included in the consolidated statement of financial position based on their nature. A lessee is required to recognize a right-of-use Lease liabilities include the net present value of the following lease payments: • Fixed payments (including in-substance • Variable lease payments that depend on an index or a rate • Amounts expected to be payable by the lessee under residual value guarantees • The exercise price of a purchase option if the lessee is reasonably certain to exercise that option, and • Payments of penalties for terminating the lease, if the lease term reflects the lessee exercising an option to terminate the lease The lease payments are discounted using the interest rate implicit in the lease if that rate can be readily determined. If that rate cannot be readily determined, the lessee’s incremental borrowing rate is used, which is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use Right-of-use • The amount of the initial measurement of the lease liability • Any lease payments made at or before the commencement date, less any lease incentives received • Any initial direct costs incurred by the lessee, and • An estimate of restoration costs However, the Group can elect not to apply the requirements of IFRS No.16 to short-term lease (lease that, at the commencement date, has a lease term of 12 months or less) and leases for which the underlying asset is of low value (for example, underlying leased asset under USD 5,000). The right-of-use right-of-use For sale and leaseback transactions, the Group applies the requirements of IFRS No.15 Revenue from Contracts with Customers
Operating Segments	3.23 Operating Segments The Group identifies its operating segments based on internal reports which are regularly reviewed by the chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance. Segment information includes items which are directly attributable and can be allocated to the segment on a reasonable basis.
Overlay Approach	3.24 Overlay Approach The Group applies the overlay approach in accordance with IFRS No.4 and a financial asset is eligible for designation for the overlay approach if, and only if, the following criteria are met: • It is measured at fair value through profit or loss applying IFRS No.9 but would not have been measured at fair value through profit or loss in its entirety applying IAS No.39 and • It is not held in respect of an activity that is unconnected with contracts within the scope of IFRS No.4. The Group reclassifies between profit or loss and other comprehensive income, and the amount reclassified is equal to the difference between: • The amount reported in profit or loss for the designated financial assets applying IFRS No.9 and • The amount that would have been reported in profit or loss for the designated financial assets if the insurer had applied IAS No.39. The Group is permitted to apply the overlay approach either at initial recognition or it may subsequently designate financial assets that newly meet criterion of not being held in respect of an activity that is unconnected with insurance contract, having previously not met that criterion. The Group continues to apply the overlay approach to a designated financial asset until that financial asset is derecognized. However, the Group de-designates At the beginning of any annual period, the Group may stop applying the overlay approach to all designated financial assets, and cannot subsequently apply the overlay approach, if it stops using this approach because it is no longer an insurer.
United States dollar amounts	3.25 United States dollar amounts The Group operates primarily in Korea and its official accounting records are maintained in Korean won. The U.S. dollar amounts are provided herein as supplementary information solely for the convenience of the reader. Korean won amounts are expressed in U.S. dollars at the rate of ￦1,185.50 to U.S. $1.00, the U.S. Federal Reserve Bank of New York buying exchange rate in effect at noon, December 31, 2021. Such convenience translation into US dollars should not be construed as representations that the Korean won amounts have been, could have been, or could in the future be, converted at this or any other rate of exchange.

Basis of Preparation (Tables)

Basis of Preparation (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of information about consolidated structured entities [abstract]
Summary of Effect of Change in Accounting Policy to Consolidated Financial Position and Comprehensive Income	2.1.2.1 Effects on consolidated statements of financial position January 1, 2020 December 31, 2020 December 31, 2021 (In millions of Korean won) Increase in net defined benefit assets ￦ 25,019 ￦ 47,752 ￦ 46,420 Decrease in net defined benefit liabilities 17,258 8,659 — Increase in deferred income tax liabilities 11,627 15,513 12,766 Increase in accumulated other comprehensive income 20,723 17,674 11,034 Increase in retained earnings 9,927 23,224 22,620 2.1.2.2 Effects on consolidated statements of comprehensive income 2019 2020 2021 (In millions of Korean won, except for per share Increase (decrease) in general and administrative expenses ￦ 788 ￦ (18,340 ) ￦ 833 Increase (decrease) in income tax expense (217 ) 5,043 (229 ) Increase (decrease) in other comprehensive income 1,304 (3,049 ) (6,640 ) Increase (decrease) in basic earnings per share (2 ) 34 (2 ) Increase (decrease) in diluted earnings per share (2 ) 33 (2 )

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policy [Abstract]
Summary of The Correlation Between The Major Macroeconomic Variables And The Credit Risk	The correlation between the major macroeconomic variables and the credit risk are as follows: Key macroeconomic variables Correlation between the major macroeconomic Domestic GDP growth rate ( - Composite stock index ( - Rate of change of construction investment ( - Rate of change of housing transaction price index ( - Interest rate spread ( + Private consumption growth rate ( - Change of call rate compared to the previous year (%p) ( + Rate of change of household loan ( - Forward-looking information used in calculation of expected credit losses is based on the macroeconomic forecasts utilized by management of the Group for its business plan considering reliable external agency’s forecasts and others. The forward-looking information is generated by KB Research with a comprehensive approach to capture the possibility of various economic forecast scenarios that are derived from the internal and external viewpoints of the macroeconomic situation. The Group determines the macroeconomic variables to be used in forecasting future conditions of the economy, considering the direction of the forecast scenario and the significant relationship between macroeconomic variables and time series data. And there are some changes compared to the macroeconomic variables used in the previous year.
Summary of Property Plant And Equipment	The depreciation method and estimated useful life of property and equipment are as follows: Property and equipment Depreciation method Estimated useful life Buildings Straight-line 20~40 years Leasehold improvements Declining-balance/ Straight-line 4~15 years Equipment and vehicles Declining-balance/ Straight-line 3~15 years
Summary of Investment Property	The depreciation method and estimated useful life of investment properties are as follows: Investment properties Depreciation method Estimated useful life Buildings Straight-line 20~40 years The residual value, the useful life, and the depreciation method applied to an asset are reviewed at each financial year-end
Summary of Finite Lived Intangible Assets	Intangible assets, except for goodwill and membership rights, are amortized using the straight-line or declining-balance method with no residual value over their estimated useful life since the assets are available for use. Intangible assets Amortization method Estimated useful life Industrial property rights Straight-line 3 ~ 19 years Software Straight-line 3 ~ 5 years Value of business acquired Declining-balance 30, 60 years Others Straight-line / Declining-balance 1 ~ 13 years The amortization period and the amortization method for an intangible asset with a finite useful life are reviewed at least at each financial year-end.

Financial Risk Management (Tabl

Financial Risk Management (Tables)	12 Months Ended
	Dec. 31, 2021
Finacial Risk Management Abstract [Abstract]
Summary of Maximum Exposure to Credit Risk	The Group’s maximum exposures to credit risk without consideration of collateral values in relation to financial instruments other than equity securities as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial assets Due from financial institutions measured at amortized cost* ￦ 22,720,091 ￦ 28,362,387 Financial assets at fair value through profit or loss: Due from financial institutions measured at fair value through profit or loss 100,094 200,742 Securities measured at fair value through profit or loss 58,415,100 63,002,692 Loans measured at fair value through profit or loss 337,983 269,296 Financial instruments indexed to the price of gold 89,965 113,622 Derivatives 5,545,385 3,721,370 Loans measured at amortized cost* 377,166,984 417,900,273 Financial investments: Securities measured at fair value through other comprehensive income 58,456,889 56,259,511 Securities measured at amortized cost* 36,870,229 44,471,628 Loans measured at fair value through other comprehensive income 293,409 313,604 Other financial assets* 14,167,689 10,755,350 574,163,818 625,370,475 Off-balance Acceptances and guarantees contracts 8,548,928 10,199,689 Financial guarantee contracts 4,964,468 6,892,464 Commitments 159,133,983 170,218,143 172,647,379 187,310,296 ￦ 746,811,197 ￦ 812,680,771 * After netting of allowance
Summary of Credit Quality of Loans	Credit qualities of loans as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Loans measured at amortized cost* Corporate Grade 1 ￦ 93,033,311 ￦ 4,646,801 ￦ 7,042 ￦ — ￦ 97,687,154 Grade 2 61,701,031 7,060,916 7,817 — 68,769,764 Grade 3 2,702,369 2,507,455 3,055 — 5,212,879 Grade 4 611,743 1,085,704 8,562 — 1,706,009 Grade 5 18,792 394,935 2,162,732 — 2,576,459 158,067,246 15,695,811 2,189,208 — 175,952,265 Retail Grade 1 163,261,012 3,536,290 6,789 — 166,804,091 Grade 2 8,828,445 4,197,409 34,896 — 13,060,750 Grade 3 2,519,004 1,322,878 9,012 — 3,850,894 Grade 4 225,262 402,881 8,352 — 636,495 Grade 5 39,466 636,361 672,397 — 1,348,224 174,873,189 10,095,819 731,446 — 185,700,454 Credit card Grade 1 8,210,540 412,555 — — 8,623,095 Grade 2 5,831,625 708,405 — — 6,540,030 Grade 3 1,526,382 1,216,434 — — 2,742,816 Grade 4 16,978 247,241 — — 264,219 Grade 5 2,101 118,907 506,462 — 627,470 15,587,626 2,703,542 506,462 — 18,797,630 348,528,061 28,495,172 3,427,116 — 380,450,349 Loans measured at fair value through other comprehensive income Corporate Grade 1 235,469 — — — 235,469 Grade 2 57,940 — — — 57,940 Grade 3 — — — — — Grade 4 — — — — — Grade 5 — — — — — 293,409 — — — 293,409 293,409 — — — 293,409 ￦ 348,821,470 ￦ 28,495,172 ￦ 3,427,116 ￦ — ￦ 380,743,758 December 31, 2021 12-month Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Loans measured at amortized cost* Corporate Grade 1 ￦ 111,284,284 ￦ 5,345,956 ￦ 3,705 ￦ — ￦ 116,633,945 Grade 2 68,050,042 7,847,126 4,338 — 75,901,506 Grade 3 5,323,745 2,850,266 2,949 — 8,176,960 Grade 4 586,857 1,037,461 7,570 — 1,631,888 Grade 5 12,877 352,046 2,143,708 — 2,508,631 185,257,805 17,432,855 2,162,270 — 204,852,930 Retail Grade 1 170,810,128 4,593,302 11,609 — 175,415,039 Grade 2 9,093,868 4,209,451 35,097 — 13,338,416 Grade 3 3,410,624 1,414,439 23,467 — 4,848,530 Grade 4 235,150 400,029 17,998 — 653,177 Grade 5 495,987 445,588 710,341 — 1,651,916 184,045,757 11,062,809 798,512 — 195,907,078 Credit card Grade 1 10,640,412 1,113,400 — — 11,753,812 Grade 2 3,919,053 1,027,546 — — 4,946,599 Grade 3 1,360,908 1,412,951 — — 2,773,859 Grade 4 82,565 608,250 — — 690,815 Grade 5 1,267 130,712 527,256 — 659,235 16,004,205 4,292,859 527,256 — 20,824,320 385,307,767 32,788,523 3,488,038 — 421,584,328 Loans measured at fair value through other comprehensive income Corporate Grade 1 233,868 — — — 233,868 Grade 2 79,736 — — — 79,736 Grade 3 — — — — — Grade 4 — — — — — Grade 5 — — — — — 313,604 — — — 313,604 313,604 — — — 313,604 ￦ 385,621,371 ￦ 32,788,523 ￦ 3,488,038 ￦ — ￦ 421,897,932 * Before netting of allowance
Summary of Credit Quality of Loans Graded According to Internal Credit Ratings	Credit qualities of loans graded according to internal credit ratings as of December 31, 2020 and 2021, are as follows: Range of probability Retail Corporate Grade 1 0.0 ~ 1.0 1 ~ 5 grade AAA Grade 2 1.0 ~ 5.0 6 ~ 8 grade BBB ~ BB Grade 3 5.0 ~ 15.0 9 ~ 10 grade BB- Grade 4 15.0 ~ 30.0 11 grade B- Grade 5 30.0 ~ 12 CC or under
Summary of Quantification Extent to Collateral and other Credit Enhancements Mitigate Credit Risk Loans	Quantification of the extent to which collateral and other credit enhancements mitigate credit risk of loans as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit losses Total Non-impaired Impaired (In millions of Korean won) Guarantees ￦ 79,088,720 ￦ 5,732,814 ￦ 187,512 ￦ 85,009,046 Deposits and savings 5,210,681 149,745 67,047 5,427,473 Property and equipment 11,607,675 808,476 120,471 12,536,622 Real estate 170,171,707 12,836,286 1,836,865 184,844,858 ￦ 266,078,783 ￦ 19,527,321 ￦ 2,211,895 ￦ 287,817,999 December 31, 2021 12-month Lifetime expected credit losses Total Non-impaired Impaired (In millions of Korean won) Guarantees ￦ 90,696,507 ￦ 6,604,758 ￦ 396,097 ￦ 97,697,362 Deposits and savings 5,723,090 98,389 79,229 5,900,708 Property and equipment 13,205,822 597,251 319,697 14,122,770 Real estate 182,139,890 13,736,634 1,990,847 197,867,371 ￦ 291,765,309 ￦ 21,037,032 ￦ 2,785,870 ￦ 315,588,211
Summary of Credit Quality of Securities Excluding Equity Securities	Credit qualities of securities exposed to credit risk other than equity securities among financial investments as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit Not applying Total Non-impaired Impaired (In millions of Korean won) Securities measured at amortized cost* Grade 1 ￦ 36,467,719 ￦ — ￦ — ￦ — ￦ 36,467,719 Grade 2 359,551 — — — 359,551 Grade 3 38,847 7,061 — — 45,908 Grade 4 — — — — — Grade 5 — — — — — 36,866,117 7,061 — — 36,873,178 Securities measured at fair value through other comprehensive income Grade 1 54,576,777 — — — 54,576,777 Grade 2 3,746,200 — — — 3,746,200 Grade 3 126,391 — — — 126,391 Grade 4 7,521 — — — 7,521 Grade 5 — — — — — 58,456,889 — — — 58,456,889 ￦ 95,323,006 ￦ 7,061 ￦ — ￦ — ￦ 95,330,067 December 31, 2021 12-month Lifetime expected credit Not applying Total Non-impaired Impaired (In millions of Korean won) Securities measured at amortized cost* Grade 1 ￦ 43,427,028 ￦ — ￦ — ￦ — ￦ 43,427,028 Grade 2 1,039,757 — — — 1,039,757 Grade 3 1,371 7,641 — — 9,012 Grade 4 — — — — — Grade 5 — — — — — 44,468,156 7,641 — — 44,475,797 Securities measured at fair value through other comprehensive income Grade 1 51,490,960 — — — 51,490,960 Grade 2 4,682,582 — — — 4,682,582 Grade 3 42,861 3,973 — — 46,834 Grade 4 39,135 — — — 39,135 Grade 5 — — — — — 56,255,538 3,973 — — 56,259,511 ￦ 100,723,694 ￦ 11,614 ￦ — ￦ — ￦ 100,735,308 * Before netting of allowance
Summary of Credit Quality of Securities Excluding Equity Securities According to Credit Ratings External Rating Agencies	Credit qualities of securities other than equity securities, according to the credit ratings by external credit rating agencies as of December 31, 2020 and 2021, are as follows: Domestic Foreign Credit quality KIS NICE P&I KAP FnPricing Inc. S&P Fitch-IBCA Moody’s Grade 1 AA0 to AAA AA0 to AAA AA0 to AAA AA0 to AAA A- to AAA A- to AAA A3 to Aaa Grade 2 A- A- A- A- BBB- to BBB+ BBB- to BBB+ Baa3 to Baa1 Grade 3 BBB0 to BBB+ BBB0 to BBB+ BBB0 to BBB+ BBB0 to BBB+ BB to BB+ BB to BB+ Ba2 to Ba1 Grade 4 BB0 to BBB- BB0 to BBB- BB0 to BBB- BB0 to BBB- B+ to BB- B+ to BB- B1 to Ba3 Grade 5 BB- BB- BB- BB- B or under B or under B2 or under Credit qualities of debt securities denominated in Korean won are based on the lowest credit rating by the domestic credit rating agencies above, and those denominated in foreign currencies are based on the lowest credit rating by the foreign credit rating agencies above.
Summary of Credit Quality Due Financial Institutions	Credit qualities of due from financial institutions as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month expected Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Due from financial institutions measured at amortized cost* Grade 1 ￦ 21,437,207 ￦ — ￦ — ￦ — ￦ 21,437,207 Grade 2 334,371 — — — 334,371 Grade 3 445,732 13,099 — — 458,831 Grade 4 479,142 — — — 479,142 Grade 5 13,520 — 283 — 13,803 ￦ 22,709,972 ￦ 13,099 ￦ 283 ￦ — ￦ 22,723,354 December 31, 2021 12-month expected Lifetime expected credit losses Not applying Total Non-impaired Impaired (In millions of Korean won) Due from financial institutions measured at amortized cost* Grade 1 ￦ 26,548,145 ￦ — ￦ — ￦ — ￦ 26,548,145 Grade 2 1,305,539 — — — 1,305,539 Grade 3 61,177 — — — 61,177 Grade 4 439,511 — — — 439,511 Grade 5 10,984 — — — 10,984 ￦ 28,365,356 ￦ — ￦ — ￦ — ￦ 28,365,356 * Before netting of allowance
Summary of Quantification Extent Collateral and Credit Enhancements Mitigate Credit Risk Derivatives	Quantification of the extent to which collateral mitigates credit risk of derivative financial instruments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Deposits, savings, securities, and others ￦ 1,651,322 ￦ 834,175
Summary of Groups Regional Loans	Classifications of loans by country as of December 31, 2020 and 2021, are as follows: December 31, 2020 * Retail Corporate Credit card Total % Allowances Carrying amount (In millions of Korean won) Korea ￦ 182,344,832 ￦ 160,385,598 ￦ 18,734,570 ￦ 361,465,000 94.85 ￦ (2,433,702 ) ￦ 359,031,298 Europe — 2,042,979 — 2,042,979 0.54 (11,141 ) 2,031,838 China — 4,518,737 654 4,519,391 1.19 (20,489 ) 4,498,902 Japan 94 923,354 10 923,458 0.24 (1,249 ) 922,209 United States — 1,962,377 — 1,962,377 0.51 (21,489 ) 1,940,888 Cambodia 1,444,906 2,280,180 — 3,725,086 0.98 (89,652 ) 3,635,434 Indonesia 1,483,345 3,637,351 60,959 5,181,655 1.36 (699,947 ) 4,481,708 Others 427,276 833,080 1,437 1,261,793 0.33 (5,694 ) 1,256,099 ￦ 185,700,453 ￦ 176,583,656 ￦ 18,797,630 ￦ 381,081,739 100.00 ￦ (3,283,363 ) ￦ 377,798,376 December 31, 2021 * Retail Corporate Credit card Total % Allowances Carrying amount (In millions of Korean won) Korea ￦ 191,601,232 ￦ 183,222,201 ￦ 20,766,535 ￦ 395,589,968 93.70 ￦ (2,653,256 ) ￦ 392,936,712 Europe — 2,673,817 — 2,673,817 0.63 (29,015 ) 2,644,802 China 34,982 6,743,756 327 6,779,065 1.61 (34,316 ) 6,744,749 Japan 86 1,039,453 8 1,039,547 0.25 (2,227 ) 1,037,320 United States — 3,555,723 — 3,555,723 0.84 (28,113 ) 3,527,610 Cambodia 1,985,808 3,115,992 — 5,101,800 1.21 (70,660 ) 5,031,140 Indonesia 1,666,850 3,710,586 55,520 5,432,956 1.29 (841,145 ) 4,591,811 Others 618,120 1,374,302 1,930 1,994,352 0.47 (25,323 ) 1,969,029 ￦ 195,907,078 ￦ 205,435,830 ￦ 20,824,320 ￦ 422,167,228 100.00 ￦ (3,684,055 ) ￦ 418,483,173 * Amount includes loans measured at fair value through profit or loss, other comprehensive income, and amortized cost.
Summary of Groups Industrial Corporate Loans	Classifications of corporate loans by industry as of December 31, 2020 and 2021, are as follows: December 31, 2020 Loans % Allowances Carrying amount (In millions of Korean won) Financial institutions ￦ 16,044,243 9.09 ￦ (20,987 ) ￦ 16,023,256 Manufacturing 45,884,606 25.98 (473,360 ) 45,411,246 Service 76,001,877 43.04 (385,093 ) 75,616,784 Wholesale and retail 23,129,457 13.10 (241,021 ) 22,888,436 Construction 4,397,814 2.49 (190,819 ) 4,206,995 Public sector 1,660,370 0.94 (74,839 ) 1,585,531 Others 9,465,289 5.36 (285,660 ) 9,179,629 ￦ 176,583,656 100.00 ￦ (1,671,779 ) ￦ 174,911,877 December 31, 2021 Loans % Allowances Carrying amount (In millions of Korean won) Financial institutions ￦ 22,059,895 10.74 ￦ (32,856 ) ￦ 22,027,039 Manufacturing 49,149,918 23.92 (510,762 ) 48,639,156 Service 86,926,095 42.31 (450,272 ) 86,475,823 Wholesale and retail 26,862,247 13.08 (257,541 ) 26,604,706 Construction 5,683,471 2.77 (228,803 ) 5,454,668 Public sector 2,070,960 1.01 (95,053 ) 1,975,907 Others 12,683,244 6.17 (311,629 ) 12,371,615 ￦ 205,435,830 100.00 ￦ (1,886,916 ) ￦ 203,548,914
Summary of Groups Retail and Credit Card Loans	Classifications of retail loans and credit card receivables as of December 31, 2020 and 2021, are as follows: December 31, 2020 Loans % Allowances Carrying amount (In millions of Korean won) Housing loan ￦ 87,312,052 42.70 ￦ (61,155 ) ￦ 87,250,897 General loan 98,388,401 48.11 (848,933 ) 97,539,468 Credit card 18,797,630 9.19 (701,496 ) 18,096,134 ￦ 204,498,083 100.00 ￦ (1,611,584 ) ￦ 202,886,499 December 31, 2021 Loans % Allowances Carrying amount (In millions of Korean won) Housing loan ￦ 93,695,479 43.23 ￦ (71,424 ) ￦ 93,624,055 General loan 102,211,599 47.16 (933,571 ) 101,278,028 Credit card 20,824,320 9.61 (792,144 ) 20,032,176 ￦ 216,731,398 100.00 ￦ (1,797,139 ) ￦ 214,934,259
Summary of Credit Risk Industrial Concentration Financial Institutions and Securities Excluding Equity Securities Derivative	Classifications of due from financial institutions, securities other than equity securities, and derivative financial assets by industry as of December 31, 2020 and 2021, are as follows: December 31, 2020 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Finance and insur a ￦ 22,723,354 100.00 ￦ (3,263 ) ￦ 22,720,091 22,723,354 100.00 (3,263 ) 22,720,091 Due from financial institutions measured at fair value through profit or loss Finance and insurance 100,094 100.00 — 100,094 100,094 100.00 — 100,094 Securities measured at fair value through profit or loss Government and government funded institutions 16,902,284 28.94 — 16,902,284 Finance and insurance 34,244,398 58.62 — 34,244,398 Others 7,268,418 12.44 — 7,268,418 58,415,100 100.00 — 58,415,100 Derivative financial assets Government and government funded institutions 44,670 0.81 — 44,670 Finance and insurance 4,925,535 88.82 — 4,925,535 Others 575,180 10.37 — 575,180 5,545,385 100.00 — 5,545,385 Securities measured at fair value through other comprehensive income Government and government funded institutions 26,205,864 44.83 — 26,205,864 Finance and insurance 24,847,602 42.51 — 24,847,602 Others 7,403,423 12.66 — 7,403,423 58,456,889 100.00 — 58,456,889 Securities measured at amortized cost Government and government funded institutions 24,018,884 65.14 (30 ) 24,018,854 Finance and insurance 11,019,911 29.89 (2,475 ) 11,017,436 Others 1,834,383 4.97 (445 ) 1,833,938 36,873,178 100.00 (2,950 ) 36,870,228 ￦ 182,114,000 ￦ (6,213 ) ￦ 182,107,787 December 31, 2021 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Finance and insurance ￦ 28,365,356 100.00 ￦ (2,969 ) ￦ 28,362,387 28,365,356 100.00 (2,969 ) 28,362,387 Due from financial institutions measured at fair value through profit or loss Finance and insurance 200,742 100.00 — 200,742 200,742 100.00 — 200,742 Securities measured at fair value through profit or loss Government and government funded institutions 16,101,187 25.56 — 16,101,187 Finance and insurance 35,025,800 55.59 — 35,025,800 Others 11,875,705 18.85 — 11,875,705 63,002,692 100.00 — 63,002,692 Derivative financial assets Government and government funded institutions 6,985 0.19 — 6,985 Finance and insurance 3,554,783 95.52 — 3,554,783 Others 159,602 4.29 — 159,602 3,721,370 100.00 — 3,721,370 Securities measured at fair value through other comprehensive income Government and government funded institutions 24,609,458 43.74 — 24,609,458 Finance and insurance 22,669,379 40.29 — 22,669,379 Others 8,980,674 15.97 — 8,980,674 56,259,511 100.00 — 56,259,511 Securities measured at amortized cost Government and government funded institutions 31,996,180 71.94 (34 ) 31,996,146 Finance and insurance 10,450,497 23.50 (3,337 ) 10,447,160 Others 2,029,120 4.56 (798 ) 2,028,322 44,475,797 100.00 (4,169 ) 44,471,628 ￦ 196,025,468 ￦ (7,138 ) ￦ 196,018,330
Summary of Credit Risk Regional Concentration Due Financial Institutions and Securities Excluding Equity Securities Derivative	Classifications of due from financial institutions, securities other than equity securities, and derivative financial assets by country as of December 31, 2020 and 2021, are as follows: December 31, 2020 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Korea ￦ 16,535,849 72.78 ￦ (607 ) ￦ 16,535,242 United States 2,030,614 8.94 (283 ) 2,030,331 Others 4,156,891 18.28 (2,373 ) 4,154,518 22,723,354 100.00 (3,263 ) 22,720,091 Due from financial institutions measured at fair value through profit or loss Korea 100,094 100.00 — 100,094 100,094 100.00 — 100,094 Securities measured at fair value through profit or loss Korea 53,991,978 92.43 — 53,991,978 United States 2,370,538 4.06 — 2,370,538 Others 2,052,584 3.51 — 2,052,584 58,415,100 100.00 — 58,415,100 Derivative financial assets Korea 2,885,214 52.03 — 2,885,214 United States 706,866 12.75 — 706,866 Others 1,953,305 35.22 — 1,953,305 5,545,385 100.00 — 5,545,385 Securities measured at fair value through other comprehensive income Korea 54,786,461 93.72 — 54,786,461 United States 942,151 1.61 — 942,151 Others 2,728,277 4.67 — 2,728,277 58,456,889 100.00 — 58,456,889 Securities measured at amortized cost Korea 34,545,872 93.69 (2,283 ) 34,543,589 United States 1,049,387 2.85 (241 ) 1,049,146 Others 1,277,919 3.46 (426 ) 1,277,493 36,873,178 100.00 (2,950 ) 36,870,228 ￦ 182,114,000 ￦ (6,213 ) ￦ 182,107,787 December 31, 2021 Amount % Allowances Carrying amount (In millions of Korean won) Due from financial institutions measured at amortized cost Korea ￦ 21,051,229 74.21 ￦ (574 ) ￦ 21,050,655 United States 2,875,884 10.14 (136 ) 2,875,748 Others 4,438,243 15.65 (2,259 ) 4,435,984 28,365,356 100.00 (2,969 ) 28,362,387 Due from financial institutions measured at fair value through profit or loss Korea 200,742 100.00 — 200,742 200,742 100.00 — 200,742 Securities measured at fair value through profit or loss Korea 56,920,225 90.35 — 56,920,225 United States 3,334,888 5.29 — 3,334,888 Others 2,747,579 4.36 — 2,747,579 63,002,692 100.00 — 63,002,692 Derivative financial assets Korea 1,639,657 44.06 — 1,639,657 United States 753,896 20.26 — 753,896 France 370,787 9.96 — 370,787 Singapore 117,964 3.17 — 117,964 Japan 96,438 2.59 — 96,438 Others 742,628 19.96 — 742,628 3,721,370 100.00 — 3,721,370 Securities measured at fair value through other comprehensive income Korea 51,484,332 91.51 — 51,484,332 United States 1,417,898 2.52 — 1,417,898 Others 3,357,281 5.97 — 3,357,281 56,259,511 100.00 — 56,259,511 Securities measured at amortized cost Korea 41,912,154 94.24 (3,183 ) 41,908,971 United States 1,188,427 2.67 (466 ) 1,187,961 Others 1,375,216 3.09 (520 ) 1,374,696 44,475,797 100.00 (4,169 ) 44,471,628 ￦ 196,025,468 ￦ (7,138 ) ￦ 196,018,330
Summary of Remaining Contractual Maturity of Financial Assets and Liabilities Excluding Derivatives Cash Flow Hedging	Remaining contractual maturity of financial liabilities other than derivatives held for cash flow hedge, and off-balance December 31, 2020 On demand Up to 1 month 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Financial liabilities Financial liabilities at fair value through profit or loss 1 ￦ 2,025,952 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 2,025,952 Financial liabilities designated at fair value through profit or loss 1 9,784,107 — — — — — 9,784,107 Derivatives held for trading 1 5,014,072 — — — — — 5,014,072 Derivatives held for hedging 2 — 3,123 4,120 62,147 35,198 109 104,697 Deposits 3 182,111,594 17,207,360 28,485,765 99,879,946 12,133,364 1,664,509 341,482,538 Borrowings 9,333,894 17,730,230 4,923,897 9,617,100 7,616,809 938,374 50,160,304 Debentures 18,105 2,806,105 6,769,859 14,330,686 35,512,544 6,241,226 65,678,525 Lease liabilities 205 22,372 40,376 152,084 332,033 44,882 591,952 Other financial liabilities 217,866 24,153,880 208,745 329,291 748,593 215,447 25,873,822 ￦ 208,505,795 ￦ 61,923,070 ￦ 40,432,762 ￦ 124,371,254 ￦ 56,378,541 ￦ 9,104,547 ￦ 500,715,969 Off-balance Commitments 4 ￦ 159,133,983 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 159,133,983 Acceptances and guarantees contracts 8,548,928 — — — — — 8,548,928 Financial guarantee contracts 5 4,964,468 — — — — — 4,964,468 ￦ 172,647,379 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 172,647,379 December 31, 2021 On demand Up to 1 month 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Financial liabilities Financial liabilities at fair value through profit or loss 1 ￦ 2,939,584 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 2,939,584 Financial liabilities designated at fair value through profit or loss 1 9,149,396 — — — — — 9,149,396 Derivatives held for trading 1 3,509,789 — — — — — 3,509,789 Derivatives held for hedging 2 — 11,355 9,993 31,135 31,640 1,423 85,546 Deposits 3 204,616,202 16,556,213 31,123,968 111,140,222 10,157,238 1,329,120 374,922,963 Borrowings 8,504,084 17,807,785 5,825,350 13,861,238 10,380,171 1,003,369 57,381,997 Debentures 14,528 3,438,621 5,318,699 20,496,869 34,863,044 6,509,966 70,641,727 Lease liabilities 139 23,387 42,406 157,536 334,359 50,555 608,382 Other financial liabilities 217,874 22,953,515 203,897 354,876 934,389 372,745 25,037,296 ￦ 228,951,596 ￦ 60,790,876 ￦ 42,524,313 ￦ 146,041,876 ￦ 56,700,841 ￦ 9,267,178 ￦ 544,276,680 Off-balance Commitments 4 ￦ 170,218,143 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 170,218,143 Acceptances and guarantees contracts 10,199,689 — — — — — 10,199,689 Financial guarantee contracts 5 6,892,464 — — — — — 6,892,464 ￦ 187,310,296 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 187,310,296 1 Financial liabilities measured or designated at fair value through profit or loss and derivatives held for trading are not managed by contractual maturity because they are expected to be traded or redeemed before maturity. Therefore, the carrying amounts of those financial instruments are included in the ‘On demand’ category. 2 Cash flows of derivatives held for hedging are shown at net amount of cash inflows and outflows by remaining contractual maturity. 3 Deposits that are contractually repayable on demand or on short notice are included in the ‘On demand’ category. 4 Commitments are included in the ‘On demand’ category because payments can be requested at any time. 5 Cash flows under financial guarantee contracts are classified based on the earliest period that the contract can be executed.
Summary of Cash Flows of Derivatives Held for Cash Flow Hedging	Contractual cash flows of derivatives held for cash flow hedge as of December 31, 2020 and 2021, are as follows: December 31, 2020 Up to 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Cash flow to be received (paid) of net-settled ￦ (1,082 ) ￦ (5,569 ) ￦ (15,132 ) ￦ (25,354 ) ￦ 290 ￦ (46,847 ) Cash flow to be received of gross-settled derivatives 85,064 220,339 517,929 2,289,277 — 3,112,609 Cash flow to be paid of gross-settled derivatives (88,952 ) (221,261 ) (523,442 ) (1,616,530 ) — (2,450,185 ) December 31, 2021 Up to 1-3 3-12 1-5 Over 5 years Total (In millions of Korean won) Cash flow to be received (paid) of net-settled ￦ (102 ) ￦ (2,647 ) ￦ (252 ) ￦ 24,812 ￦ (11 ) ￦ 21,800 Cash flow to be received of gross-settled derivatives 126,429 325,664 619,100 2,084,618 — 3,155,811 Cash flow to be paid of gross-settled derivatives (130,919 ) (329,546 ) (630,023 ) (1,428,759 ) — (2,519,247 )
Details of Financial Instruments that Have Not Been Converted to Alternative Interest Rate Benchmark	Details of financial instruments that have not been converted to alternative interest rate benchmark as of December 31, 2021, are as follows: December 31, 2021 Exposure amount* USD LIBOR Others (In millions of Korean won) Measured at fair value: Financial assets at fair value through profit or loss ￦ 4,695 ￦ — Financial liabilities designated at fair value through profit or loss 92,833 — Financial investments 231,702 — Measured at amortized cost: Loans 3,734,401 55,800 Borrowings and debentures 867,731 — Others: Derivative financial instruments 1,398,607 — * Financial instruments to be expired before transition to alternative interest rate benchmark are excluded, and non-derivative
Summary of Value at Risk	Ten-day Kookmin Bank 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Interest rate risk ￦ 59,147 ￦ 9,588 ￦ 105,983 ￦ 50,795 Stock price risk 15,379 3,787 24,821 24,821 Currency risk 36,281 5,302 67,766 49,338 Diversification effect (7,320 ) Total VaR ￦ 105,428 ￦ 14,225 ￦ 158,798 ￦ 117,634 2021 Average Minimum Maximum Dec. 31,2021 (In millions of Korean won) Interest rate risk ￦ 20,051 ￦ 6,372 ￦ 55,670 ￦ 16,534 Stock price risk 9,067 4,537 24,824 5,513 Currency risk 27,886 17,820 49,264 21,522 Diversification effect (13,039 ) Total VaR ￦ 40,915 ￦ 15,986 ￦ 115,347 ￦ 30,530 KB Securities Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Interest rate risk ￦ 656,651 ￦ 575,053 ￦ 755,704 ￦ 755,704 Stock price risk 267,186 213,639 317,478 213,639 Currency risk 15,113 8,759 21,907 10,588 Commodity risk 18 1 56 18 ￦ 938,968 ￦ 797,452 ￦ 1,095,145 ￦ 979,949 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Interest rate risk ￦ 724,482 ￦ 657,094 ￦ 821,864 ￦ 821,864 Stock price risk 249,320 207,425 299,221 278,356 Currency risk 14,275 6,808 22,543 22,543 Commodity risk 88 3 210 19 ￦ 988,165 ￦ 871,330 ￦ 1,143,838 ￦ 1,122,782 KB Insurance Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Interest rate risk ￦ 5,682 ￦ 2,850 ￦ 7,652 ￦ 7,055 Currency risk 26,529 23,491 29,339 28,891 ￦ 32,211 ￦ 26,341 ￦ 36,991 ￦ 35,946 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Interest rate risk ￦ 5,445 ￦ 3,854 ￦ 6,553 ￦ 5,906 Currency risk 34,560 28,035 40,853 40,853 ￦ 40,005 ￦ 31,889 ￦ 47,406 ￦ 46,759 KB Kookmin Card Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Currency risk ￦ 2,712 ￦ 169 ￦ 7,861 ￦ 7,546 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Currency risk ￦ 13,029 ￦ 7,744 ￦ 16,094 ￦ 15,637 Prudential Life Insurance Company of Korea Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Currency risk ￦ 7,977 ￦ 7,977 ￦ 7,977 ￦ 7,977 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Currency risk ￦ 4,676 ￦ 1,337 ￦ 7,211 ￦ 6,963 KB Asset Management Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Interest rate risk ￦ 1,298 ￦ — ￦ 2,589 ￦ — Stock price risk 3,382 — 9,484 — Currency risk 812 1,208 1,523 1,141 ￦ 5,492 ￦ 1,208 ￦ 13,596 ￦ 1,141 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Currency risk ￦ 2,151 ￦ 1,053 ￦ 3,085 ￦ 2,405 KB Capital Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Currency risk ￦ 810 ￦ 297 ￦ 1,315 ￦ 896 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Currency risk ￦ 1,121 ￦ 867 ￦ 1,280 ￦ 1,280 KB Life Insurance Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Interest rate risk ￦ 3,054 ￦ 1,784 ￦ 4,389 ￦ 2,743 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Interest rate risk ￦ 2,095 ￦ 1,072 ￦ 2,932 ￦ 1,072 Currency risk 4,216 1,725 6,651 6,378 ￦ 6,311 ￦ 2,797 ￦ 9,583 ￦ 7,450 KB Real Estate Trust Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Stock price risk ￦ 399 ￦ — ￦ 435 ￦ — 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Stock price risk ￦ — ￦ — ￦ — ￦ — KB Investment Co., Ltd. 2020 Average Minimum Maximum Dec. 31, 2020 (In millions of Korean won) Stock price risk ￦ 1,153 ￦ — ￦ 7,588 ￦ 6,253 Currency risk 11,864 10,167 12,625 11,655 ￦ 13,017 ￦ 10,167 ￦ 20,213 ￦ 17,908 2021 Average Minimum Maximum Dec. 31, 2021 (In millions of Korean won) Stock price risk ￦ 5,114 ￦ 3,518 ￦ 10,518 ￦ 10,518 Currency risk 13,706 11,269 18,452 18,301 ￦ 18,820 ￦ 14,787 ￦ 28,970 ￦ 28,819
Summary of Required Equity Capital not Measured by Value at Risk	Kookmin Bank December 31, 2020 December 31, 2021 (In millions of Korean won) Interest rate risk ￦ 40,290 ￦ 25,432 Stock price risk 7,088 6 Currency risk 23,938 46,173 ￦ 71,316 ￦ 71,611
Summary of Changes in Equity and Earnings from Interest Rate Risk	(a) Kookmin Bank ΔEVE is calculated by applying six interest rate shock and stress scenarios, and ΔNII is calculated by applying parallel shock up and parallel shock down scenarios. Results as of December 31, 2020 and 2021 are as follows: December 31, 2020 December 31, 2021 Δ EVE Δ NII Δ EVE Δ NII (In millions of Korean won) Scenario 1 (Parallel shock up) ￦ 544,087 ￦ 415,339 ￦ 936,965 ￦ 564,771 Scenario 2 (Parallel shock down) — — — — Scenario 3 (Short rates down, long rates up) 245,337 273,951 Scenario 4 (Short rates up, long rates down) 423,673 311,497 Scenario 5 (Short rates shock up) 466,220 568,246 Scenario 6 (Short rates shock down) 480,246 345,987 Maximum out of six scenarios 544,087 415,339 936,965 564,771 Basic capital 28,234,310 30,491,173
Summary of Interest Rate Value at Risk	(b) Non-bank ΔEVE is maximum out of six interest rate shock and stress scenarios, and ΔNII is maximum of parallel shock up and parallel shock down scenarios. Results as of December 31, 2020 and 2021 are as follows: December 31, 2020 December 31, 2021 Δ EVE Δ NII Δ EVE Δ NII (In millions of Korean won) KB Securities Co., Ltd. ￦ 134,136 ￦ 469,043 ￦ 173,199 ￦ 272,676 KB Insurance Co., Ltd. 730,313 38,697 939,720 37,119 KB Kookmin Card Co., Ltd. 283,780 135,628 93,232 225,581 Prudential Life Insurance Company of Korea Ltd. 497,798 14,434 611,930 24,135 KB Capital Co., Ltd. 108,306 26,166 105,728 41,112 KB Life Insurance Co., Ltd. 48,879 35,071 143,393 33,942 KB Savings Bank Co., Ltd. 25,878 499 20,077 786
Summary of Financial Instruments Foreign Currencies	Details of financial instruments denominated in foreign currencies and translated into Korean won as of December 31, 2020 and 2021, are as follows: December 31, 2020 USD JPY EUR GBP CNY Others Total (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 4,482,459 ￦ 583,545 ￦ 558,793 ￦ 113,586 ￦ 878,798 ￦ 1,152,515 ￦ 7,769,696 Financial assets at fair value through profit or loss 5,464,176 39,817 508,587 30,030 6,046 177,545 6,226,201 Derivatives held for trading 339,190 18,061 41,834 1,774 4,344 9,724 414,927 Derivatives held for hedging 112,431 — — — — — 112,431 Loans measured at amortized cost 18,783,163 565,918 1,387,089 259,787 1,617,715 5,597,016 28,210,688 Financial assets at fair value through other comprehensive income 5,446,539 5,271 35,478 — 342,804 224,801 6,054,893 Financial assets at amortized cost 1,660,713 — 300,315 — 108,594 537,966 2,607,588 Other financial assets 2,747,958 50,573 231,435 20,162 122,642 353,707 3,526,477 ￦ 39,036,629 ￦ 1,263,185 ￦ 3,063,531 ￦ 425,339 ￦ 3,080,943 ￦ 8,053,274 ￦ 54,922,901 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 1,267,690 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 1,267,690 Derivatives held for trading 497,975 21,221 84,712 1,817 42,023 36,625 684,373 Derivatives held for hedging 139,528 — — — — 14,050 153,578 Deposits 16,441,107 933,268 991,872 66,440 1,755,272 4,331,641 24,519,600 Borrowings 10,068,379 485,618 402,802 501,716 439 1,728,281 13,187,235 Debentures 5,135,667 — 666,873 — — 308,675 6,111,215 Other financial liabilities 3,407,300 38,979 98,093 9,911 51,331 237,281 3,842,895 ￦ 36,957,646 ￦ 1,479,086 ￦ 2,244,352 ￦ 579,884 ￦ 1,849,065 ￦ 6,656,553 ￦ 49,766,586 Off-balance ￦ 14,991,859 ￦ 32,200 ￦ 248,007 ￦ 741 ￦ 253,472 ￦ 906,502 ￦ 16,432,781 December 31, 2021 USD JPY EUR GBP CNY Others Total (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 6,995,653 ￦ 420,964 ￦ 482,144 ￦ 96,951 ￦ 570,186 ￦ 1,646,253 ￦ 10,212,151 Financial assets at fair value through profit or loss 7,217,843 12,047 514,047 11,024 16,113 261,029 8,032,103 Derivatives held for trading 222,759 221 44,384 534 5,549 21,762 295,209 Derivatives held for hedging 104,091 — — — — 4,541 108,632 Loans measured at amortized cost 26,605,737 597,413 1,777,967 234,612 1,774,589 6,518,650 37,508,968 Financial assets at fair value through other comprehensive income 6,604,010 5,152 121,573 6,272 536,747 405,391 7,679,145 Financial assets at amortized cost 2,267,233 — 300,856 — 48,435 710,950 3,327,474 Other financial assets 1,893,691 37,036 100,041 7,082 69,307 252,337 2,359,494 ￦ 51,911,017 ￦ 1,072,833 ￦ 3,341,012 ￦ 356,475 ￦ 3,020,926 ￦ 9,820,913 ￦ 69,523,176 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 1,496,712 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 1,496,712 Derivatives held for trading 376,230 6,099 61,941 19,833 18,223 117,217 599,543 Derivatives held for hedging 42,470 — — — — — 42,470 Deposits 21,324,104 900,044 1,873,026 106,456 1,943,015 5,402,000 31,548,645 Borrowings 15,597,440 456,029 386,023 496,084 — 2,176,532 19,112,108 Debentures 6,366,475 — 1,338,391 — 102,443 708,353 8,515,662 Other financial liabilities 1,834,429 23,158 140,779 16,543 93,933 211,516 2,320,358 ￦ 47,037,860 ￦ 1,385,330 ￦ 3,800,160 ￦ 638,916 ￦ 2,157,614 ￦ 8,615,618 ￦ 63,635,498 Off-balance ￦ 19,149,581 ￦ 353 ￦ 262,116 ￦ 2,991 ￦ 250,239 ￦ 844,384 ￦ 20,509,664
Summary of Objectives Policies and Processes for Managing Capital	The Group complies with the capital adequacy standard established by the financial supervisory authority. This capital adequacy standard is based on Basel III revised by Basel Committee on Banking Supervision in Bank for International Settlements (“BIS”) in June 2011 and was implemented in Korea in December 2013. According to this standard, the Group is required to maintain a minimum capital adequacy ratio to risk-weighted assets (Common Equity Tier 1 Capital ratio of 8.0%, Tier 1 Capital ratio of 9.5%, and Total Capital ratio of 11.5%) as of December 31, 2021. The Group’s capital is classified into three categories in accordance with the Detailed Regulations on Supervision of Financial Holding Companies as follows: • Common Equity Tier 1 Capital: Common equity Tier 1 Capital is the first to take losses of the Group and is the last to be compensated in liquidation of the Group and not repaid except for liquidation. It includes capital, capital surplus, retained earnings, non-controlling • Additional Tier 1 Capital: Additional Tier 1 Capital includes capital, capital surplus, etc. related to the issuance of capital securities of a permanent nature that meets the conditional capital securities requirements. • Tier 2 Capital: Tier 2 Capital means capital that can compensate for losses of the Group upon liquidation, including (a) the amount of subordinated bonds with maturity of not less than 5 years that meet the conditional capital securities requirements, and (b) the allowances for credit losses accumulated on the loans which are classified as normal or precautionary in accordance with Regulations on Supervision of Financial Holding Companies, and others. The risk-weighted assets are the magnitude of the amount of risk inherent in the total asset held by the Group. The Group calculates risk-weighted assets by each risk (credit risk, market risk, and operational risk) based on the Detailed Regulations on Supervision of Financial Holding Companies and uses them to calculate capital adequacy ratio. The Group evaluates and manages capital adequacy through separate internal policies. The evaluation of capital adequacy compares the size of available capital (the amount of capital actually available) to the size of internal capital (the amount of capital required to cover all the significant risks faced by the Group under its target credit rating), which monitors financial soundness and provides a risk-adjusted performance measurement basis. Internal capital refers to the capital required to prevent the insolvency from future unexpected losses. The Group operates a system to measure, allocate, and manage internal capital to major subsidiaries by risk type. The Risk Management Committee of the Group determines the risk appetite of the Group, allocates internal capital by risk type and major subsidiaries, and major subsidiaries operate capital efficiently within the range of the allocated internal capital. The Risk Management Department of the Group monitors internal capital limit management and reports it to management and the Risk Management Committee. If the limit of internal capital is expected to be exceeded due to new businesses or business expansion, the Group’s capital adequacy management is carried out through review and approval by the Risk Management Committee in advance. Details of the Group’s capital adequacy ratio in accordance with Basel III requirements as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Total Capital: ￦ 40,080,136 ￦ 45,882,765 Tier 1 Capital 36,895,778 42,305,442 Common Equity Tier 1 Capital 34,886,283 39,144,259 Additional Tier 1 Capital 2,009,495 3,161,183 Tier 2 Capital 3,184,358 3,577,323 Risk-Weighted Assets: 262,349,242 290,913,570 Total Capital ratio (%): 15.28 15.77 Tier 1 Capital ratio (%) 14.06 14.54 Common Equity Tier 1 Capital ratio (%) 13.30 13.46
Summary of Nature and Extent of Risks Arising from Financial Instruments	4.2.1 Overview of credit risk Credit risk is the risk of loss from the portfolio of assets held due to the counterparty’s default, breach of contract, and deterioration of credit quality. For risk management purposes, the Group manages all factors of credit risk exposure, such as default risk of individual borrowers, country risk, and risk of specific sectors in an integrated way. 4.2.2 Credit risk management The Group measures the expected loss and internal capital for the assets subject to credit risk management, including on-balance off-balance In addition, to prevent excessive concentration of exposures by borrower and industry, the total exposure limit at the Group level is introduced, applied, and managed to control the credit concentration risk. All of the Kookmin Bank’s loan customers (individuals and corporates) are assigned a credit rating and managed by a comprehensive internal credit evaluation system. For individuals, the credit rating is evaluated by utilizing personal information, income and job information, asset information, and bank transaction information. For corporates, the credit rating is evaluated by analyzing and utilizing financial and non-financial The credit rating, once assigned, serves as the fundamental instrument in Kookmin Bank’s credit risk management, and is applied in a wide range of credit risk management processes, including credit approval, credit limit management, loan pricing, and assessment of allowances for credit losses. For corporates, Kookmin Bank conducts a regular credit evaluation at least once a year, and the review and supervision departments regularly validate the adequacy of credit ratings to manage credit risks. KB Kookmin Card Co., Ltd.’s credit scoring system is divided into Application Scoring System (“ASS”) and Behavior Scoring System (“BSS”). For applications that meet the eligibility criteria for card issuance, the card will be issued only if the ASS credit rating is above the standard. KB Kookmin Card Co., Ltd.’s internal information, external information from the credit bureau company and others, and personal information on the application are used to calculate the ASS credit rating. The BSS, which is recalculated on a weekly basis, predicts the delinquency probability of cardholders, and utilizes it to monitor cardholders and portfolio risk. In order to establish a credit risk management system, the Group manages credit risk by forming a separate risk management organization. In particular, independently of the Sales Group, the Credit Management & Analysis Group of Kookmin Bank, a subsidiary, is in charge of loan policy, loan system, credit rating, credit analysis, follow-up 4.3.1 Overview of liquidity risk Liquidity risk is a risk that the Group becomes insolvent due to the mismatch between the inflow and outflow of funds, unexpected cash outflows, or a risk of loss due to financing funds at a high interest rate or disposing of securities at an unfavorable price due to lack of available funds. The Group manages its liquidity risk through analysis of the contractual maturity of interest-bearing assets and liabilities, assets and liabilities related to the other inflows and outflows of funds, and off-balance 4.3.2 Liquidity risk management and indicator The liquidity risk is managed by risk management policies and liquidity risk management guidelines set forth in these policies that apply to all risk management policies and procedures that may arise throughout the overall business of the Group. The Group calculates and manages liquidity ratio and others for all transactions and off-balance 4.4.1 Concept Market risk refers to risks that can result in losses due to changes in market factors such as interest rate, stock price, and foreign exchange rate, etc., which arise from securities, derivatives, and others. The most significant risks associated with trading positions are interest rate risk, currency risk, and additional risks include stock price risk. The non-trading non-trading 4.4.2 Risk management The Group sets and monitors internal capital limits for market risk and interest rate risk to manage the risks of trading and non-trading non-trading In the case of Kookmin Bank, a major subsidiary, the Risk Management Council establishes and enforces overall market risk management policies for market risk management and decides to establish position limits, loss limits, VaR limits, and approves non-standard Kookmin Bank’s Asset-Liability Management Committee (“ALCO”) determines interest rate and commission operating standards and Asset Liability Management (“ALM”) operation policies and enacts and revises relevant guidelines. The Risk Management Committee and the Risk Management Council monitor the establishment and enforcement of ALM risk management policies and enact and revise ALM risk management guidelines. Interest rate risk limits are set based on future asset and liability positions and expected interest rate volatility, which reflect annual business plans. The ALM Department and the Risk Management Department regularly measure and monitor interest rate risk and report the status and limit of interest rate risk including changes in Economic Value of Equity (“ΔEVE”), changes in Net Interest Income (“ΔNII”), and duration gap to the ALCO and the Risk Management Council on a monthly basis, and to the Risk Management Committee on a quarterly basis. To ensure the adequacy of interest rate risk and liquidity risk management, the Risk Management Department assigns the limits, monitors and reviews the procedures and tasks of ALM operations conducted by the ALM department, and reports related matters to the management independently. Kookmin Bank is closely monitoring the outputs of various industry groups and markets that manage the transition to the new interest rate benchmark, including announcements by LIBOR regulation authority and various consultative bodies related to the transition to alternative interest rate. In response to these announcements, Kookmin Bank has completed most of the transition and replacement plans according to LIBOR transition programs and plans consisting of major business areas such as finance, accounting, tax, legal, IT, and risk. The program is under the control of the CFO and related matters are reported to the board of directors and consultative bodies with senior management as members. Kookmin Bank continues its efforts as a market participant to actively express opinions so that the index interest rate benchmark reform can be carried out in the direction of minimizing the financial and non-financial 4.4.3 Trading position 4.4.3.1 Definition of a trading position The trading position, which is subject to market risk management, is the trading position defined in “Trading Policy and Guidelines” and the basic requirements for the trading position are as follows: • The target position has no restrictions on the sale, and the daily fair value assessment should be made, and the embedded significant risk can be hedged in the market. • The trading position classification criteria should be clearly defined in the Trading Policy and Guidelines, and the trading position should be managed by a separate trading department. • The target position must be operated according to the documented trading strategy and the management of position limit must be carried out. • The specialized dealer or operating department shall have the authority to execute the transaction without prior approval from the Risk Management Department, etc. within the predetermined limits of the target position. • The target positions should be periodically reported to management for risk management of the Group. 4.4.3.4 Details of risk factors (a) Interest rate risk Interest rate risk for trading positions usually arises from debt securities denominated in Korean won. The Group’s trading strategy is to gain short-term trading gains from interest rate fluctuations. The Group manages interest rate risk associated with trading accounts using VaR and sensitivity analysis (Price Value of a Basis Point: PVBP). (b) Stock price risk Stock price risk occurs mainly in trading stocks denominated in Korean won. The portfolio of trading stocks denominated in Korean won consists of stocks listed on the exchange and derivatives linked to stocks and is managed by strict distributed investment limits. (c) Currency risk Currency risk arises from holding assets and liabilities which are denominated in foreign currency, and currency-related derivatives. Most of the net foreign currency exposures occur in the US dollars and the Chinese Yuan. The Group also manages net foreign exchange exposures across trading and non-trading 4.5.1 Concept Operational risk of the Group refers to the risk of loss that may occur due to improper or incorrect internal procedures, personnel, systems or external events. Operational risk management plays a role in enhancing the stability and soundness of financial institutions by managing the appropriate level of capital and supplementing the internal control system. 4.5.2 Risk management The purpose of operational risk management is not only to comply with supervisory and regulatory requirements, but also to spread risk management culture, strengthen internal control, improve processes, and provide timely feedback to management and all employees. The Parent Company manages the Group’s overall operational risk, and each subsidiary establishes and implements operational risk management policies according to its own risk level and implements and operates related systems. The Group Risk Management Committee establishes and allocates risk capital of operational risk for each subsidiary, and subsidiaries manage operational risks at an appropriate level within the allocated risk capital.
Disclosure of Classification of time buckets of cash flows [ Table Text Block]	(Classification of time buckets of cash flows (19 buckets in total)) Time bucket intervals (D:Day M:Months Y:Years t cf Short-term rates 1D ( 0.0028Y 1D< t cf ≤1M ( 0.0417Y 1M< t cf ≤3M (0.1667Y) 3M< t cf ≤6M (0.375Y) 6M< t cf ≤9M (0.625Y) 9M< t cf ≤1Y (0.875Y) 1Y< t cf ≤1.5Y (1.25Y) 1.5Y< t cf ≤2Y (1.75Y) Medium-term rates 2Y< t cf ≤3Y (2.5Y) 3Y< t cf ≤4Y (3.5Y) 4Y< t cf ≤5Y (4.5Y) 5Y< t cf ≤6Y (5.5Y) 6Y< t cf ≤7Y (6.5Y) Long-term rates 7Y< t cf ≤8Y (7.5Y) 8Y< t cf ≤9Y (8.5Y) 9Y< t cf ≤10Y (9.5Y) 10Y< t cf ≤15Y (12.5Y) 15Y< t cf ≤20Y (17.5Y) t cf (25Y)
Disclosure of core deposit and average maturity by category fornonmaturitydeposits [Table Text Block]	(Caps on core deposit and average maturity by category for non-maturity Cap on proportion of core deposits (%) Cap on average maturity of core deposits (years) Retail/transactional 90 5 Retail/non-transactional 70 4.5 Wholesale 50 4

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of operating segments [abstract]
Summary of Operating Segments	Financial information by business segment as of and for the years ended December 31, 2020 and 2021, are as follows: 2020 Banking business Corporate Retail banking Other Sub-total Securities Non-life Credit card Life Others Consolidation Total (In millions of Korean won) Net operating revenues from external customers ￦ 2,833,601 ￦ 2,918,826 ￦ 1,797,921 ￦ 7,550,348 ￦ 1,448,409 ￦ 1,027,269 ￦ 1,538,230 ￦ 237,416 ￦ 690,970 ￦ — ￦ 12,492,642 Intersegment net operating revenues (expenses) 178,199 — 108,118 286,317 (6,366 ) 5,976 (183,480 ) (9,655 ) 324,910 (417,702 ) — 3,011,800 2,918,826 1,906,039 7,836,665 1,442,043 1,033,245 1,354,750 227,761 1,015,880 (417,702 ) 12,492,642 Net interest income 3,238,002 3,178,280 338,484 6,754,766 510,566 615,951 1,265,703 260,925 314,832 (469 ) 9,722,274 Interest income 4,899,943 4,519,579 1,036,643 10,456,165 820,100 616,852 1,631,520 261,056 726,668 (26,614 ) 14,485,747 Interest expense (1,661,941 ) (1,341,299 ) (698,159 ) (3,701,399 ) (309,534 ) (901 ) (365,817 ) (131 ) (411,836 ) 26,145 (4,763,473 ) Net fee and commission income (expenses) 363,459 406,603 297,860 1,067,922 916,758 (171,220 ) 400,485 (18,059 ) 776,282 (13,229 ) 2,958,939 Fee and commission income 480,190 529,178 440,319 1,449,687 1,037,545 8,571 1,485,718 98 871,499 (326,094 ) 4,527,024 Fee and commission expense (116,731 ) (122,575 ) (142,459 ) (381,765 ) (120,787 ) (179,791 ) (1,085,233 ) (18,157 ) (95,217 ) 312,865 (1,568,085 ) Net insurance income (expenses) — — — — — 376,827 13,283 (91,410 ) — 1,293 299,993 Insurance income — — — — — 12,367,894 23,989 2,026,052 — (31,295 ) 14,386,640 Insurance expense — — — — — (11,991,067 ) (10,706 ) (2,117,462 ) — 32,588 (14,086,647 ) Net gains (losses) on financial instruments at fair value through profit or loss (52,493 ) — 296,676 244,183 117,792 259,274 5,904 71,350 396,626 (83,763 ) 1,011,366 Net other operating income (expenses) (537,168 ) (666,057 ) 973,019 (230,206 ) (103,073 ) (47,587 ) (330,625 ) 4,955 (471,860 ) (321,534 ) (1,499,930 ) General and administrative expenses ￦ (1,555,089 ) ￦ (2,072,515 ) ￦ (573,742 ) ￦ (4,201,346 ) ￦ (844,503 ) ￦ (810,923 ) ￦ (514,845 ) ￦ (152,271 ) ￦ (405,530 ) ￦ 114,606 ￦ (6,814,812 ) Operating income before provision for credit losses 1,456,711 846,311 1,332,297 3,635,319 597,540 222,322 839,905 75,490 610,350 (303,096 ) 5,677,830 Reversal (provision) of credit losses (204,302 ) (264,943 ) (14,937 ) (484,182 ) (23,827 ) 7,569 (396,376 ) 472 (148,127 ) 973 (1,043,498 ) Net operating income 1,252,409 581,368 1,317,360 3,151,137 573,713 229,891 443,529 75,962 462,223 (302,123 ) 4,634,332 Share of profit (loss) of associates and joint ventures — — (48,158 ) (48,158 ) 3,598 (42 ) 1,127 1 553 (829 ) (43,750 ) Net other non-operating 5,490 — 23,354 28,844 4,472 16,142 (6,636 ) (16,270 ) 40,927 121,911 189,390 Segment profit before income tax expense 1,257,899 581,368 1,292,556 3,131,823 581,783 245,991 438,020 59,693 503,703 (181,041 ) 4,779,972 Income tax expense (339,728 ) (159,876 ) (312,700 ) (812,304 ) (156,135 ) (68,821 ) (114,027 ) (27,167 ) (97,268 ) 11,328 (1,264,394 ) Profit for the year ￦ 918,171 ￦ 421,492 ￦ 979,856 ￦ 2,319,519 ￦ 425,648 ￦ 177,170 ￦ 323,993 ￦ 32,526 ￦ 406,435 ￦ (169,713 ) ￦ 3,515,578 Profit attributable to shareholders of the Parent Company 917,956 421,492 958,747 2,298,195 425,622 177,181 324,662 32,526 404,381 (194,119 ) 3,468,448 Profit (loss) attributable to non-controlling 215 — 21,109 21,324 26 (11 ) (669 ) — 2,054 24,406 47,130 Total assets* 164,323,181 161,330,053 112,790,880 438,444,114 57,570,654 39,125,869 24,071,645 35,546,572 47,408,052 (31,446,962 ) 610,719,944 Total liabilities* 167,236,387 176,571,944 64,227,709 408,036,040 52,516,488 35,093,312 19,789,959 32,524,518 21,598,232 (2,240,962 ) 567,317,587 2021 Banking business Securities Non-life Credit card Life Others Consolidation Total Corporate Retail Other Sub-total (In millions of Korean won) Net operating revenues from external customers ￦ 3,589,404 ￦ 2,958,198 ￦ 1,585,192 ￦ 8,132,794 ￦ 1,675,977 ￦ 1,285,593 ￦ 1,773,989 ￦ 631,065 ￦ 984,185 ￦ — ￦ 14,483,603 Intersegment net operating revenues (expenses) 34,771 — 271,887 306,658 11,002 (53,017 ) (158,545 ) (7,273 ) 98,215 (197,040 ) — 3,624,175 2,958,198 1,857,079 8,439,452 1,686,979 1,232,576 1,615,444 623,792 1,082,400 (197,040 ) 14,483,603 Net interest income 3,802,477 3,541,539 384,460 7,728,476 556,386 625,228 1,390,753 519,609 411,874 (2,754 ) 11,229,572 Interest income 5,317,800 4,437,930 918,631 10,674,361 824,775 634,816 1,768,215 523,882 816,515 (31,686 ) 15,210,878 Interest expense (1,515,323 ) (896,391 ) (534,171 ) (2,945,885 ) (268,389 ) (9,588 ) (377,462 ) (4,273 ) (404,641 ) 28,932 (3,981,306 ) Net fee and commission income (expenses) 390,619 392,060 405,202 1,187,881 1,014,801 (173,348 ) 546,022 (26,895 ) 1,068,648 8,474 3,625,583 Fee and commission income 534,749 535,530 516,665 1,586,944 1,201,670 10,418 1,644,806 433 1,187,661 (308,326 ) 5,323,606 Fee and commission expense (144,130 ) (143,470 ) (111,463 ) (399,063 ) (186,869 ) (183,766 ) (1,098,784 ) (27,328 ) (119,013 ) 316,800 (1,698,023 ) Net insurance income — — — — — 493,271 11,589 56,871 — (5,020 ) 556,711 Insurance income — — — — — 12,722,178 21,711 3,406,145 — (42,176 ) 16,107,858 Insurance expense — — — — — (12,228,907 ) (10,122 ) (3,349,274 ) — 37,156 (15,551,147 ) Net gains on financial instruments at fair value through profit or loss 29,407 — 313,427 342,834 123,183 369,864 3,431 137,343 184,467 (165,818 ) 995,304 Net other operating income (expenses) (598,328 ) (975,401 ) 753,990 (819,739 ) (7,391 ) (82,439 ) (336,351 ) (63,136 ) (582,589 ) (31,922 ) (1,923,567 ) General and administrative expenses ￦ (1,831,948 ) ￦ (2,036,855 ) ￦ (533,928 ) ￦ (4,402,731 ) ￦ (855,142 ) ￦ (833,597 ) ￦ (577,734 ) ￦ (203,198 ) ￦ (438,170 ) ￦ 109,719 ￦ (7,200,853 ) Operating income before provision for credit losses 1,792,227 921,343 1,323,151 4,036,721 831,837 398,979 1,037,710 420,594 644,230 (87,321 ) 7,282,750 Reversal (provision) of credit losses (392,956 ) (125,876 ) (3,896 ) (522,728 ) (18,438 ) (5,476 ) (465,342 ) 1,677 (175,568 ) 742 (1,185,133 ) Net operating income 1,399,271 795,467 1,319,255 3,513,993 813,399 393,503 572,368 422,271 468,662 (86,579 ) 6,097,617 Share of profit (loss) of associates and joint ventures — — 57,156 57,156 14,484 (143 ) 785 — 9,411 11,833 93,526 Net other non-operating (9,237 ) — (70,368 ) (79,605 ) (18,307 ) 17,446 (7,378 ) (158 ) 2,408 (23,943 ) (109,537 ) Segment profit before income tax expense 1,390,034 795,467 1,306,043 3,491,544 809,576 410,806 565,775 422,113 480,481 (98,689 ) 6,081,606 Income tax expense (368,577 ) (218,753 ) (366,185 ) (953,515 ) (215,424 ) (108,715 ) (144,611 ) (132,510 ) (148,044 ) 5,594 (1,697,225 ) Profit for the year ￦ 1,021,457 ￦ 576,714 ￦ 939,858 ￦ 2,538,029 ￦ 594,152 ￦ 302,091 ￦ 421,164 ￦ 289,603 ￦ 332,437 ￦ (93,095 ) ￦ 4,384,381 Profit attributable to shareholders of the Parent Company 1,022,699 576,714 991,351 2,590,764 594,301 301,836 418,898 289,603 330,563 (116,422 ) 4,409,543 Profit (loss) attributable to non-controlling (1,242 ) — (51,493 ) (52,735 ) (149 ) 255 2,266 — 1,874 23,327 (25,162 ) Total assets* 189,310,448 169,513,344 124,741,106 483,564,898 55,493,984 41,472,227 27,349,561 36,921,678 52,929,567 (33,836,081 ) 663,895,834 Total liabilities* 197,834,530 180,815,013 72,026,442 450,675,985 50,008,422 37,328,955 22,793,919 34,166,882 23,191,051 (2,563,300 ) 615,601,914 * Assets and liabilities of the reporting segments are amounts before intersegment transactions.
Summary of Products and Services	Net operating revenues from external customers by service for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Banking service ￦ 6,946,626 ￦ 7,550,348 ￦ 8,132,794 Securities service 1,113,200 1,448,409 1,675,977 Non-life 1,185,600 1,027,269 1,285,593 Credit card service 1,470,910 1,538,230 1,773,989 Life insurance service 107,404 237,416 631,065 Others 608,111 690,970 984,185 ￦ 11,431,851 ￦ 12,492,642 ￦ 14,483,603
Summary of Geographical Areas	Geographical net operating revenues from external customers for the years ended December 31, 2019, 2020 and 2021, and major non-current Net operating revenues from external customers Major non-current 2019 2020 2021 December 31, 2020 December 31, 2021 (In millions of Korean won) Domestic ￦ 11,142,264 ￦ 11,891,540 ￦ 13,525,769 ￦ 10,216,017 ￦ 9,853,970 United States 72,945 114,044 112,388 45,353 45,530 New Zealand 6,946 3,554 12,857 2,385 1,932 China 109,574 84,821 127,939 13,971 21,416 Cambodia 19,534 250,426 410,482 32,354 35,668 United Kingdom 10,037 28,681 29,764 81,879 86,361 Indonesia — 44,392 166,683 387,237 437,088 Others 70,551 75,184 97,721 51,288 20,446 Consolidation — — — 487,742 518,788 ￦ 11,431,851 ￦ 12,492,642 ￦ 14,483,603 ￦ 11,318,226 ￦ 11,021,199

Financial Assets and Financia_2

Financial Assets and Financial Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about financial instruments [abstract]
Summary of Fair Value Measurement	6.1.1 Carrying amount and fair value of financial assets and liabilities by category as of December 31, 2020 and 2021, are as follows: December 31, 2020 Carrying amount Fair value (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 25,608,842 ￦ 25,612,273 Financial assets at fair value through profit or loss: 61,035,455 61,035,455 Due from financial institutions 100,094 100,094 Debt securities 58,415,100 58,415,100 Equity securities 2,092,313 2,092,313 Loans 337,983 337,983 Others 89,965 89,965 Derivatives held for trading 5,210,512 5,210,512 Derivatives held for hedging 334,873 334,873 Loans measured at amortized cost 377,166,984 378,791,808 Securities measured at amortized cost 36,870,229 38,026,073 Financial assets at fair value through other comprehensive income: 61,825,197 61,825,197 Debt securities 58,456,889 58,456,889 Equity securities 3,074,899 3,074,899 Loans 293,409 293,409 Other financial assets 14,167,689 14,167,689 ￦ 582,219,781 ￦ 585,003,880 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,025,951 ￦ 2,025,951 Financial liabilities designated at fair value through profit or loss 9,784,107 9,784,107 Derivatives held for trading 5,014,072 5,014,072 Derivatives held for hedging 208,825 208,825 Deposits 338,580,220 338,833,784 Borrowings 49,827,156 50,081,900 Debentures 62,760,687 63,189,132 Other financial liabilities 28,612,288 28,612,288 ￦ 496,813,306 ￦ 497,750,059 December 31, 2021 Carrying amount Fair value (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 31,009,374 ￦ 31,081,231 Financial assets at fair value through profit or loss: 66,005,815 66,005,815 Due from financial institutions 200,742 200,742 Debt securities 63,002,692 63,002,692 Equity securities 2,419,463 2,419,463 Loans 269,296 269,296 Others 113,622 113,622 Derivatives held for trading 3,532,542 3,532,542 Derivatives held for hedging 188,828 188,828 Loans measured at amortized cost 417,900,273 417,775,260 Securities measured at amortized cost 44,471,628 44,392,419 Financial assets at fair value through other comprehensive income: 60,376,243 60,376,243 Debt securities 56,259,511 56,259,511 Equity securities 3,803,128 3,803,128 Loans 313,604 313,604 Other financial assets 10,755,350 10,755,350 ￦ 634,240,053 ￦ 634,107,688 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,939,584 ￦ 2,939,584 Financial liabilities designated at fair value through profit or loss 9,149,396 9,149,396 Derivatives held for trading 3,509,789 3,509,789 Derivatives held for hedging 172,469 172,469 Deposits 372,023,918 371,936,631 Borrowings 56,912,374 56,805,938 Debentures 67,430,188 67,288,409 Other financial liabilities 29,494,402 29,494,402 ￦ 541,632,120 ￦ 541,296,618 Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The Group discloses the fair value of each class of assets and liabilities in a way that permits it to be compared with its carrying amount at the end of each reporting period. The best evidence of fair value of financial instruments is a quoted price in an active market. Methods of determining fair value of financial instruments are as follows: Cash and due from financial institutions Fair value of cash is same as carrying amount. Carrying amount of demand deposit and settlement deposit is a reasonable approximation of fair value because these financial instruments do not have a fixed maturity and are receivable on demand. Fair value of general deposit is measured using Discounted Cash Flow (“DCF”) Model. Securities Fair value of securities and others that are traded in an active market is determined using the quoted prices. If there is no quoted price, fair value is determined using external professional valuation institutions. The institutions use one or more valuation techniques that are deemed appropriate considering the characteristics of the financial instruments among DCF Model, Free Cash Flow to Equity Model, Comparable Company Analysis, Dividend Discount Model, Risk Adjusted Discount Rate Method, and Net Asset Value Method. Loans measured at amortized cost Fair value of loans is determined using DCF Model discounting the expected cash flows, which are contractual cash flows adjusted by the expected prepayment rate, at an appropriate discount rate. Derivatives and financial instruments at fair value through profit or loss Fair value of exchange traded derivatives is determined using quoted price in an active market, and fair value of OTC derivatives is determined using valuation techniques. The Group uses internally developed valuation models that are widely used by market participants to determine fair value of plain vanilla OTC derivatives including options, interest rate swaps, and currency swaps, based on observable market parameters. However, some complex financial instruments are valued using appropriate models developed from generally accepted market valuation models including Finite Difference Method (“FDM”), MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Closed Form, and Tree Model or valuation results from independent external professional valuation institutions. Deposits Carrying amount of demand deposits is a reasonable approximation of fair value because they do not have a fixed maturity and are payable on demand. Fair value of time deposits is determined using DCF Model discounting the expected cash flows, which are contractual cash flows adjusted by the expected prepayment rate, at an appropriate discount rate. Borrowings Carrying amount of overdrafts in foreign currency is a reasonable approximation of fair value because they do not have a fixed maturity and are payable on demand. Fair value of other borrowings is determined using DCF Model. Debentures Fair value is determined using valuation results of external professional valuation institutions, which are calculated using market inputs. Other financial assets and other financial liabilities Carrying amount is a reasonable approximation of fair value because other financial assets and other financial liabilities are temporary accounts used for other various transactions and their maturities are relatively short or not defined. Fair value hierarchy of financial assets and liabilities at fair value in the consolidated statements of financial position as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value hierarchy Total Level 1 Level 2 Level 3 (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 14,508,028 ￦ 35,298,665 ￦ 11,228,762 ￦ 61,035,455 Due from financial institutions — 10,011 90,083 100,094 Debt securities 13,316,819 34,580,168 10,518,113 58,415,100 Equity securities 1,101,244 409,259 581,810 2,092,313 Loans — 299,227 38,756 337,983 Others 89,965 — — 89,965 Derivatives held for trading 90,459 4,678,185 441,868 5,210,512 Derivatives held for hedging — 334,873 — 334,873 Financial assets at fair value through other comprehensive income: 18,731,801 40,645,505 2,447,891 61,825,197 Debt securities 18,147,167 40,309,722 — 58,456,889 Equity securities 584,634 70,357 2,419,908 3,074,899 Loans — 265,426 27,983 293,409 ￦ 33,330,288 ￦ 80,957,228 ￦ 14,118,521 ￦ 128,406,037 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,025,951 ￦ — ￦ — ￦ 2,025,951 Financial liabilities designated at fair value through profit or loss 1,040 581,636 9,201,431 9,784,107 Derivatives held for trading 204,470 4,668,155 141,447 5,014,072 Derivatives held for hedging — 208,825 — 208,825 ￦ 2,231,461 ￦ 5,458,616 ￦ 9,342,878 ￦ 17,032,955 December 31, 2021 Fair value hierarchy Total Level 1 Level 2 Level 3* (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 13,108,985 ￦ 40,205,783 ￦ 12,691,047 ￦ 66,005,815 Due from financial institutions — 128,726 72,016 200,742 Debt securities 12,146,181 39,300,923 11,555,588 63,002,692 Equity securities 849,182 600,768 969,513 2,419,463 Loans — 175,366 93,930 269,296 Others 113,622 — — 113,622 Derivatives held for trading 81,408 3,241,129 210,005 3,532,542 Derivatives held for hedging — 188,828 — 188,828 Financial assets at fair value through other comprehensive income: 20,027,158 38,900,548 1,448,537 60,376,243 Debt securities 17,706,456 38,553,055 — 56,259,511 Equity securities 2,320,702 47,859 1,434,567 3,803,128 Loans — 299,634 13,970 313,604 ￦ 33,217,551 ￦ 82,536,288 ￦ 14,349,589 ￦ 130,103,428 Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,939,584 ￦ — ￦ — ￦ 2,939,584 Financial liabilities designated at fair value through profit or loss 36,938 1,294,944 7,817,514 9,149,396 Derivatives held for trading 211,132 3,124,057 174,600 3,509,789 Derivatives held for hedging — 172,469 — 172,469 ￦ 3,187,654 ￦ 4,591,470 ￦ 7,992,114 ￦ 15,771,238 * Includes KB Securities Co., Ltd.’s OTC derivatives consisting of ￦ 128,083 million of financial assets at fair value through profit or loss (debt instruments), ￦ 7,817,514 million of financial liabilities designated at fair value through profit or loss, ￦ 209,809 million of derivative financial assets, and ￦ 168,464 million of derivative financial liabilities. Valuation techniques and inputs of financial assets and liabilities classified as Level 2 and measured at fair value in the consolidated statements of financial position as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 35,298,665 Due from financial institutions 10,011 DCF Model Projected cash flow, Discount rate Debt securities 34,580,168 DCF Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Net Asset Value Method, and others Projected cash flow, Fair value of underlying asset, Dividend yield, Price of underlying asset, Interest rate, Discount rate, Volatility, Correlation coefficient, and others Equity securities 409,259 DCF Model Interest rate, Discount rate, and others Loans 299,227 DCF Model Interest rate, Discount rate, and others Derivatives held for trading 4,678,185 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, and others Discount rate, Underlying asset index, Volatility, Interest rate, Stock price, Foreign exchange rate, Dividend yield, and others Derivatives held for hedging 334,873 DCF Model, Closed Form, FDM, and others Discount rate, Volatility, Foreign exchange rate, and others Financial assets at fair value through other comprehensive income: 40,645,505 Debt securities 40,309,722 DCF Model, Market Value Approach Discount rate, Volatility, and others Equity securities 70,357 DCF Model Interest rate, Discount rate, and others Loans 265,426 DCF Model Discount rate, Volatility, and others ￦ 80,957,228 Financial liabilities Financial liabilities designated at fair value through profit or loss ￦ 581,636 DCF Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others Price of underlying asset, Interest rate, Dividend yield, Volatility, Discount rate, and others Derivatives held for trading 4,668,155 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, and others Discount rate, Underlying asset index, Volatility, Interest rate, Stock price, Foreign exchange rate, Dividend yield, and others Derivatives held for hedging 208,825 DCF Model, Closed Form, FDM, and others Discount rate, Foreign exchange rate, and others ￦ 5,458,616 December 31, 2021 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: ￦ 40,205,783 Due from financial institutions 128,726 DCF Model, Hull and White Model Projected cash flow, Discount rate, Volatility, Correlation coefficient Debt securities 39,300,923 DCF Model, Hull and White Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Net Asset Value Method, Binomial Model, and others Projected cash flow, Fair value of underlying asset, Dividend yield, Price of underlying asset, Interest rate, Discount rate, Volatility, Correlation coefficient, and others Equity securities 600,768 DCF Model Interest rate, Discount rate, and others Loans 175,366 DCF Model Interest rate, Discount rate, and others Derivatives held for trading 3,241,129 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others Interest rate, Price of underlying asset, Foreign exchange rate, Credit spread, Discount rate, Volatility, and others Derivatives held for hedging 188,828 DCF Model, Closed Form, FDM Projected cash flow, Discount rate, Forward foreign exchange rate, Volatility, Foreign exchange rate, and others Financial assets at fair value through other comprehensive income: 38,900,548 Debt securities 38,553,055 DCF Model, Market Value Approach, Option Model Underlying asset index, Interest rate, Discount rate, and others Equity securities 47,859 DCF Model Discount rate Loans 299,634 DCF Model Discount rate ￦ 82,536,288 Financial liabilities Financial liabilities designated at fair value through profit or loss ￦ 1,294,944 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model Price of underlying asset, Interest rate, Dividend yield, Volatility, Discount rate Derivatives held for trading 3,124,057 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others Interest rate, Price of underlying asset, Foreign exchange rate, Credit spread, Discount rate, Volatility, and others Derivatives held for hedging 172,469 DCF Model, Closed Form, FDM Projected cash flow, Discount rate, Forward foreign exchange rate, Volatility, Foreign exchange rate, and others ￦ 4,591,470 6.1.2.2 Fair value hierarchy of financial assets and liabilities whose fair value is disclosed Fair value hierarchy of financial assets and liabilities whose fair value is disclosed as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value hierarchy Total Level 1 Level 2 Level 3 (In millions of Korean won) Financial assets Cash and due from financial institutions 1 ￦ 3,362,096 ￦ 19,573,075 ￦ 2,677,102 ￦ 25,612,273 Loans measured at amortized cost — 271,241 378,520,567 378,791,808 Securities measured at amortized cost 19,438,941 18,584,264 2,868 38,026,073 Other financial assets 2 — — 14,167,689 14,167,689 ￦ 22,801,037 ￦ 38,428,580 ￦ 395,368,226 ￦ 456,597,843 Financial liabilities Deposits 1 ￦ — ￦ 181,472,846 ￦ 157,360,938 ￦ 338,833,784 Borrowings 3 — 1,149,734 48,932,166 50,081,900 Debentures — 57,916,235 5,272,897 63,189,132 Other financial liabilities 2 — — 28,612,288 28,612,288 ￦ — ￦ 240,538,815 ￦ 240,178,289 ￦ 480,717,104 December 31, 2021 Fair value hierarchy Total Level 1 Level 2 Level 3 (In millions of Korean won) Financial assets Cash and due from financial institutions 1 ￦ 3,330,920 ￦ 25,791,556 ￦ 1,958,755 ￦ 31,081,231 Loans measured at amortized cost — 260,101 417,515,159 417,775,260 Securities measured at amortized 2 18,263,895 26,125,391 3,133 44,392,419 Other financial assets 2 — — 10,755,350 10,755,350 ￦ 21,594,815 ￦ 52,177,048 ￦ 430,232,397 ￦ 504,004,260 Financial liabilities Deposits 1 ￦ — ￦ 204,299,174 ￦ 167,637,457 ￦ 371,936,631 Borrowings 3 — 3,137,427 53,668,511 56,805,938 Debentures — 60,824,743 6,463,666 67,288,409 Other financial liabilities 2 — — 29,494,402 29,494,402 ￦ — ￦ 268,261,344 ￦ 257,264,036 ￦ 525,525,380 1 The amounts included in Level 2 are the carrying amounts which are reasonable approximations of fair value. 2 The amounts included in Level 3 are the carrying amounts which are reasonable approximations of fair value. 3 Borrowings of ￦ 292 million and ￦ 2,143 million included in Level 2 are the carrying amounts which are reasonable approximations of fair value as of December 31, 2020 and 2021, respectively. Valuation techniques and inputs of financial assets and liabilities classified as Level 2, and whose fair value is disclosed as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Loans measured at amortized cost ￦ 271,241 DCF Model Discount rate Securities measured at amortized cost 18,584,264 DCF Model, MonteCarlo Simulation Discount rate, Interest rate ￦ 18,855,505 Financial liabilities Borrowings ￦ 1,149,442 DCF Model Discount rate Debentures 57,916,235 DCF Model Discount rate ￦ 59,065,677 December 31, 2021 Fair value Valuation techniques Inputs (In millions of Korean won) Financial assets Loans measured at amortized cost ￦ 260,101 DCF Model Discount rate Securities measured at amortized cost 26,125,391 DCF Model, MonteCarlo Simulation Discount rate, Interest rate ￦ 26,385,492 Financial liabilities Borrowings ￦ 3,135,284 DCF Model Discount rate Debentures 60,824,743 DCF Model Discount rate ￦ 63,960,027 Valuation techniques and inputs of financial assets and liabilities classified as Level 3, and whose fair value is disclosed as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation Inputs (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 2,677,102 DCF Model Credit spread, Other spread, Interest rate Loans measured at amortized cost 378,520,567 DCF Model Credit spread, Other spread, Prepayment rate, Interest rate Securities measured at amortized cost 2,868 DCF Model Interest rate ￦ 381,200,537 Financial liabilities Deposits ￦ 157,360,938 DCF Model Other spread, Prepayment rate, Interest rate Borrowings 48,932,166 DCF Model Other spread, Interest rate Debentures 5,272,897 DCF Model Other spread, Interest rate ￦ 211,566,001 December 31, 2021 Fair value Valuation Inputs (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ 1,958,755 DCF Model Credit spread, Other spread, Interest rate Loans measured at amortized cost 417,515,159 DCF Model Credit spread, Other spread, Prepayment rate, Interest rate ￦ 419,473,914 Financial liabilities Deposits ￦ 167,637,457 DCF Model Other spread, Prepayment rate, Interest rate Borrowings 53,668,511 DCF Model Other spread, Interest rate Debentures 6,463,666 DCF Model Other spread, Interest rate ￦ 227,769,634
Summary of Fair Value Hierarchy Group Classifies and Discloses Fair Value of Financial Instruments	The Group believes that valuation techniques used for measuring the fair value of financial instruments are reasonable and that the fair value recognized in the consolidated statement of financial position is appropriate. However, the fair value of the financial instruments recognized in the consolidated statement of financial position may be different if other valuation techniques or assumptions are used. Additionally, as there are a variety of valuation techniques and assumptions used in measuring fair value, it may be difficult to reasonably compare the fair value with that of other financial institutions. The Group classifies and discloses fair value of the financial instruments into the three fair value levels as follows: Level 1: The fair values are based on quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date. Level 2: The fair values are based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3: The fair values are based on unobservable inputs for the asset or liability. The fair value measurement is categorized in its entirety in the same level of the fair value hierarchy as the lowest level input that is significant to the entire measurement. If an observable input requires an adjustment using an unobservable input and that adjustment results in a significantly higher or lower fair value measurement, the resulting measurement would be categorized within Level 3 of the fair value hierarchy.
Summary of Changes in Level 3 of the Fair Value Hierarchy	6.2.2.1 Changes in financial instruments classified as Level 3 of the fair value hierarchy for the years ended December 31, 2020 and 2021, are as follows: 2020 Financial assets at fair value through profit or loss Financial investments Financial liabilities at Net derivative Due from financial Securities Loans measured at Equity securities Loans measured Financial liabilities Derivatives held for (In millions of Korean won) Beginning ￦ 51,125 ￦ 10,656,042 ￦ 188,133 ￦ 1,482,398 ￦ — ￦ (11,222,032 ) ￦ 309,966 Total gains or losses: Profit or loss (2,021 ) 22,069 627 (206 ) — (406,788 ) 400,241 Other comprehensive income (loss) (7,693 ) 144,963 — 815,244 (217 ) (27,876 ) — Purchases 135,227 3,519,573 — 122,827 40,000 — (24,165 ) Sales (86,555 ) (3,263,111 ) (150,004 ) (355 ) (11,800 ) — (328,348 ) Issues — — — — — (9,333,419 ) (42,732 ) Settlements — — — — — 11,788,684 90 Transfers into Level 3* — 129,580 — — — — (1,044 ) Transfers out of Level 3* — (109,193 ) — — — — (13,587 ) Ending ￦ 90,083 ￦ 11,099,923 ￦ 38,756 ￦ 2,419,908 ￦ 27,983 ￦ (9,201,431 ) ￦ 300,421 2021 Financial assets at fair value through profit or loss Financial investments Financial liabilities at Net derivative Due from financial Securities Loans measured at Equity securities Loans measured Financial liabilities Derivatives held for (In millions of Korean won) Beginning ￦ 90,083 ￦ 11,099,923 ￦ 38,756 ￦ 2,419,908 ￦ 27,983 ￦ (9,201,431 ) ￦ 300,421 Total gains or losses: Profit or loss 212 346,982 (431 ) — — 61,756 (66,116 ) Other comprehensive income (loss) 1,720 223,545 — (101,876 ) 87 (5,446 ) — Purchases — 3,567,937 55,605 74,602 — — 3,953 Sales (19,999 ) (2,360,801 ) — (5,618 ) (14,100 ) — (170,055 ) Issues — — — — — (8,233,128 ) (32,516 ) Settlements — — — — — 9,560,735 — Transfers into Level 3* — 4,307 — — — — (282 ) Transfers out of Level 3* — (356,792 ) — (952,449 ) — — — Ending ￦ 72,016 ￦ 12,525,101 ￦ 93,930 ￦ 1,434,567 ￦ 13,970 ￦ (7,817,514 ) ￦ 35,405 * Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.
Summary of Information about Fair Value Measurements Using Unobservable Inputs Assets	6.2.3.1 Information about fair value measurements using unobservable inputs as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial assets Financial assets at fair value through profit or loss: Due from financial institutions ￦ 90,083 MonteCarlo Simulation Volatility of underlying asset 19.40 ~ 36.76 The higher the volatility of underlying asset, the higher the fair value fluctuation Correlation coefficient 12.27 The higher the correlation coefficient, the higher the fair value fluctuation Debt securities 10,518,113 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Option Model, Binomial Model, Net Asset Value Method, Income Approach, Market Value Approach, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Volatility 8.00 ~ 179.75 The higher the volatility, the higher the fair value fluctuation Discount rate 0.00 ~ 21.37 The lower the discount rate, the higher the fair value Recovery rate 40 The higher the recovery rate, the higher the fair value Correlation coefficient between underlying assets -61.12 ~ 100.00 The higher the correlation coefficient, the higher the fair value fluctuation Liquidation value 0.00 The higher the liquidation value, the higher the fair value Rate of real estate price fluctuation 0.00 The higher the sale price of real estate, the higher the fair value Equity securities 581,810 Income Approach, Market Value Approach, Asset Value Approach, DCF Model, Comparable Company Analysis, Risk Adjusted Discount Rate Method, Dividend Discount Model, Usage of Past Transactions, Binomial Model, and others Growth rate 0.00 ~ 1.10 The higher the growth rate, the higher the fair value Discount rate 0.60 ~ 18.67 The lower the discount rate, the higher the fair value Liquidation value 0.00 The higher the liquidation value, the higher the fair value Loans 38,756 Binomial Model, DCF Model Volatility of stock price 0.00 The higher the volatility, the higher the fair value fluctuation Discount rate 7.86 The lower the discount rate, the higher the fair value December 31, 2020 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Derivatives held for trading: Stock and index 382,337 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility of underlying asset 20.00 ~ 72.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -61.12 ~ 89.01 The higher the correlation coefficient, the higher the fair value fluctuation Currency, interest rate, and others 59,531 DCF Model, Hull and White Model Volatility 0.00 ~ 68.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -50.48 ~ 90.95 The higher the correlation coefficient, the higher the fair value fluctuation Financial assets at fair value through other comprehensive income: Equity securities 2,419,908 Risk Adjusted Discount Rate Method, IMV Model, DCF Model, Comparable Company Analysis, Dividend Discount Model, Option Model, Net Asset Value Method, Market Value Approach, One Factor Hull and White Model, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Discount rate 7.60 ~ 19.67 The lower the discount rate, the higher the fair value Volatility 22.11 ~ 24.16 The higher the volatility, the higher the fair value fluctuation Loans 27,983 DCF Model Discount rate 2.21 ~ 4.21 The lower the discount rate, the higher the fair value ￦ 14,118,521 December 31, 2021 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial assets Financial assets at fair value through profit or loss: Due from financial institutions ￦ 72,016 MonteCarlo Simulation, Hull and White Model Volatility of underlying asset 14.30 ~ 39.66 The higher the volatility of underlying asset, the higher the fair value fluctuation Correlation coefficient -3.36 The higher the correlation coefficient, the higher the fair value fluctuation Debt securities 11,555,588 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Option Model, Binomial Model, Net Asset Value Method, Milestone Method, Income Approach, Market Value Approach, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Volatility 13.87 ~ 58.39 The higher the volatility, the higher the fair value fluctuation Discount rate 0.60 ~ 21.37 The lower the discount rate, the higher the fair value Stock price 18.87 ~ 19.48 The higher the stock price, the higher the fair value Correlation coefficient between underlying assets -60.35 ~ 100.00 The higher the correlation coefficient, the higher the fair value fluctuation Liquidation value -1.00 ~ 1.00 The higher the liquidation value, the higher the fair value Recovery rate 40 The higher the recovery rate, the higher the fair value Rate of real estate price fluctuation -1.00 ~ 1.00 The higher the sale price of real estate, the higher the fair value Equity securities 969,513 Income Approach, Market Value Approach, Asset Value Approach, DCF Model, Comparable Company Analysis, Risk Adjusted Discount Rate Method, Dividend Discount Model, Usage of Past Transactions, Binomial Model, and others Growth rate 0.50 ~ 2.00 The higher the growth rate, the higher the fair value Discount rate 8.80 ~ 24.60 The lower the discount rate, the higher the fair value Stock price 23.36 ~ 25.49 The higher the stock price, the higher the fair value Loans 93,930 DCF Model Discount rate 8.21 The lower the discount rate, the higher the fair value December 31, 2021 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Derivatives held for trading: Stock and index ￦ 184,165 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility of underlying asset 15.07 ~ 80.58 The higher the volatility, the higher the fair value fluctuation Correlation coefficient -60.35 ~ 88.17 The higher the correlation coefficient, the higher the fair value fluctuation Stock price -10.00 ~ 10.00 The higher the stock price, the higher the fair value Currency, interest rate, and others 25,840 DCF Model, Hull and White Model, MonteCarlo Simulation, Closed Form Volatility 2.67 ~ 81.32 The higher the volatility, the higher the fair value fluctuation Correlation coefficient -48.31 ~ 90.16 The higher the correlation coefficient, the higher the fair value fluctuation Financial assets at fair value through other comprehensive income: Equity securities 1,434,567 Risk Adjusted Discount Rate Method, IMV Model, DCF Model, Comparable Company Analysis, Dividend Discount Model, Net Asset Value Method, Market Value Approach, Hull and White Model, and others Growth rate 0.00 ~ 2.00 The higher the growth rate, the higher the fair value Discount rate 8.80 ~ 18.02 The lower the discount rate, the higher the fair value Volatility 23.36 ~ 31.65 The higher the volatility, the higher the fair value fluctuation Loans 13,970 DCF Model Discount rate 2.87 ~ 4.87 The lower the discount rate, the higher the fair value ￦ 14,349,589
Summary of Information about Fair Value Measurements Using Unobservable Inputs Liabilities	December 31, 2020 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial liabilities Financial liabilities designated at fair value through profit or loss: Derivative-linked securities ￦ 9,201,431 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model Volatility of underlying asset 1.00 ~ 72.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -61.12 ~ 90.95 The higher the absolute value of correlation coefficient, the higher the fair value fluctuation Derivatives held for trading: Stock and index 60,291 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility 20.00 ~ 68.00 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -61.12 ~ 90.95 The higher the correlation coefficient, the higher the fair value fluctuation Others 81,156 MonteCarlo Simulation, Hull and White Model, DCF Model, Closed Form Volatility 21.00 ~ 68.00 The higher the volatility, the higher the fair value fluctuation Discount rate 1.15 ~ 1.29 The higher the discount rate, the lower the fair value Correlation coefficient between underlying assets -50.48 ~ 90.95 The higher the absolute value of correlation coefficient, the higher the fair value fluctuation ￦ 9,342,878 December 31, 2021 Fair value Valuation techniques Unobservable inputs Range of Relationship of unobservable inputs to (In millions of Financial liabilities Financial liabilities designated at fair value through profit or loss: Derivative-linked securities ￦ 7,817,514 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model Volatility of underlying asset 1.00 ~ 81.32 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -60.35 ~ 90.16 The higher the correlation coefficient, the higher the fair value fluctuation Derivatives held for trading: Stock and index 92,757 DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model Volatility of underlying asset 15.07 ~ 80.58 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -60.35 ~ 88.17 The higher the correlation coefficient, the higher the fair value fluctuation Others 81,843 DCF Model, Hull and White Model, MonteCarlo Simulation, Closed Form Discount rate 1.46 ~ 2.83 The lower the discount rate, the higher the fair value Volatility of underlying asset 5.29 ~ 53.57 The higher the volatility, the higher the fair value fluctuation Correlation coefficient between underlying assets -48.31 ~ 90.16 The higher the correlation coefficient, the higher the fair value fluctuation ￦ 7,992,114
Summary of Day one Gain or Loss	Changes in deferred day one gains or losses for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Balance at the beginning of the year ￦ 45,767 ￦ 61,393 New transactions 166,555 166,443 Changes during the year (150,929 ) (150,628 ) Balance at the end of the year ￦ 61,393 ￦ 77,208
Summary of Carrying Amounts of Financial Assets by Category	Financial assets and liabilities are measured at fair value or amortized cost. Carrying amount of financial assets and liabilities by category as of December 31, 2020 and 2021, are as follows: December 31, 2020 Financial Financial Financial Financial Derivatives Total (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ — ￦ — ￦ — ￦ 25,608,842 ￦ — ￦ 25,608,842 Financial assets at fair value through profit or loss 61,035,455 — — — — 61,035,455 Derivative financial assets 5,210,512 — — — 334,873 5,545,385 Loans measured at amortized cost — — — 377,166,984 — 377,166,984 Financial investments — 58,750,298 3,074,899 36,870,229 — 98,695,426 Other financial assets — — — 14,167,689 — 14,167,689 ￦ 66,245,967 ￦ 58,750,298 ￦ 3,074,899 ￦ 453,813,744 ￦ 334,873 ￦ 582,219,781 December 31, 2021 Financial Financial Financial Financial Derivatives Total (In millions of Korean won) Financial assets Cash and due from financial institutions ￦ — ￦ — ￦ — ￦ 31,009,374 ￦ — ￦ 31,009,374 Financial assets at fair value through profit or loss 66,005,815 — — — — 66,005,815 Derivative financial assets 3,532,542 — — — 188,828 3,721,370 Loans measured at amortized cost — — — 417,900,273 — 417,900,273 Financial investments — 56,573,115 3,803,128 44,471,628 — 104,847,871 Other financial assets — — — 10,755,350 — 10,755,350 ￦ 69,538,357 ￦ 56,573,115 ￦ 3,803,128 ￦ 504,136,625 ￦ 188,828 ￦ 634,240,053
Summary of Carrying Amounts of Financial Liabilities by Category	December 31, 2020 Financial Financial instruments Financial Derivatives Total (In millions of Korean won) Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,025,951 ￦ 9,784,107 ￦ — ￦ — ￦ 11,810,058 Derivative financial liabilities 5,014,072 — — 208,825 5,222,897 Deposits — — 338,580,220 — 338,580,220 Borrowings — — 49,827,156 — 49,827,156 Debentures — — 62,760,687 — 62,760,687 Other financial liabilities — — 28,612,288 — 28,612,288 ￦ 7,040,023 ￦ 9,784,107 ￦ 479,780,351 ￦ 208,825 ￦ 496,813,306 December 31, 2021 Financial Financial instruments Financial Derivatives Total (In millions of Korean won) Financial liabilities Financial liabilities at fair value through profit or loss ￦ 2,939,584 ￦ 9,149,396 ￦ — ￦ — ￦ 12,088,980 Derivative financial liabilities 3,509,789 — — 172,469 3,682,258 Deposits — — 372,023,918 — 372,023,918 Borrowings — — 56,912,374 — 56,912,374 Debentures — — 67,430,188 — 67,430,188 Other financial liabilities — — 29,494,402 — 29,494,402 ￦ 6,449,373 ￦ 9,149,396 ￦ 525,860,882 ￦ 172,469 ￦ 541,632,120
Summary of Continuing Involvement in Derecognised Financial Assets	The Group transferred loans and other financial assets to companies specialized in asset-backed securitization and derecognized them from the consolidated financial statement, while the maximum exposure to loss (carrying amount) from its continuing involvement and fair value of its continuing involvement of the derecognized financial assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 Type of continuing Classification of financial Carrying amount Fair value of (In millions of Korean won) Discovery 2 nd Subordinated bond Financial assets at fair value through profit or loss ￦ 5,190 ￦ 5,190 FK 1411 ABS Ltd. Subordinated bond Financial assets at fair value through profit or loss 1,062 1,062 AP 3B ABS Ltd. Subordinated bond Financial assets at fair value through profit or loss 646 646 AP 4D ABS Ltd. Subordinated bond Financial assets at fair value through profit or loss 6,304 6,304 ￦ 13,202 ￦ 13,202 December 31, 2021 Type of continuing Classification of financial Carrying amount Fair value of (In millions of Korean won) Discovery 2 nd Subordinated bond Financial assets at fair value through profit or loss ￦ 5,189 ￦ 5,189 AP 4D ABS Ltd. Subordinated bond Financial assets at fair value through profit or loss 5,463 5,463 ￦ 10,652 ￦ 10,652
Summary of Financial Assets Transferred During Period Which Do not Qualify for Derecognition	The Group issued securitized debentures using loans as underlying assets. Details of underlying assets and senior debentures in relation to securitization as of December 31, 2020 and 2021, are as follows: December 31, 2020 Carrying amount Fair value of Carrying amount Fair value of (In millions of Korean won) KB Kookmin Card 4 th 1 ￦ 490,465 ￦ 488,251 ￦ 219,419 ￦ 226,401 KB Kookmin Card 5 th 1 476,523 474,481 299,838 304,914 KB Kookmin Card 6 th 1 701,360 698,421 434,492 472,861 KB Kookmin Card 7 th 1 924,159 919,775 553,711 591,609 KB Auto Second Asset Securitization Specialty Co., Ltd. 2 307,270 308,861 249,689 250,306 ￦ 2,899,777 ￦ 2,889,789 ￦ 1,757,149 ￦ 1,846,091 December 31, 2021 Carrying amount Fair value of Carrying amount Fair value of (In millions of Korean won) KB Kookmin Card 5 th 1 ￦ 492,108 ￦ 490,113 ￦ 299,881 ￦ 302,564 KB Kookmin Card 6 th 1 726,803 723,835 474,000 474,766 KB Kookmin Card 7 th 1 948,129 943,689 598,180 596,272 KB Kookmin Card 8 th 1 545,750 543,982 299,844 306,264 KB Auto Second Asset Securitization Specialty Co., Ltd. 2 129,867 129,385 59,968 59,935 ￦ 2,842,657 ￦ 2,831,004 ￦ 1,731,873 ￦ 1,739,801 1 The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts 2 The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as when the trusted assets do not meet the eligibility requirements. 6.4.3 Bonds sold under repurchase agreements and loaned securities The Group continues to recognize the financial assets related to bonds sold under repurchase agreements and securities lending transactions in the consolidated statement of financial position since those transactions are not qualified for derecognition even though the Group transfers the financial assets. Bonds sold under repurchase agreements are sold on the condition that they will be repurchased at a fixed price and loaned securities will be returned at the expiration of the loan period. Thus, the Group retains substantially all the risks and rewards of ownership of the financial assets. The carrying amount of transferred assets and related liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 Carrying amount of Carrying amount of (In millions of Korean won) Bonds sold under repurchase agreements* ￦ 13,994,352 ￦ 13,398,140 Loaned securities: Government and public bonds 1,831,673 — Stock 19,811 — ￦ 15,845,836 ￦ 13,398,140 December 31, 2021 Carrying amount of Carrying amount of (In millions of Korean won) Bonds sold under repurchase agreements* ￦ 11,273,036 ￦ 10,978,971 Loaned securities: Government and public bonds 1,035,736 — Stock 253 — ￦ 12,309,025 ￦ 10,978,971 * Bonds sold under repurchase agreements using borrowed securities as collateral amount to ￦ 2,147,975 million and ￦ 2,050,635 million as of December 31, 2020 and 2021, respectively.
Summary of Offsetting Of Financial Assets	6.5.1 Details of financial assets subject to enforceable master netting agreements or similar arrangements as of December 31, 2020 and 2021, are as follows: December 31, 2020 Gross assets Gross liabilities Net amount in Non-offsetting Net amount Financial Cash (In millions of Korean won) Derivatives held for trading and derivative-linked securities ￦ 5,425,708 ￦ — ￦ 5,425,708 Derivatives held for hedging 334,874 — 334,874 ￦ (3,940,729 ) ￦ (263,564 ) ￦ 1,556,289 Unsettled spot exchange receivable 3,435,657 — 3,435,657 (3,434,222 ) — 1,435 Bonds purchased under repurchase agreements 3,600,447 — 3,600,447 (3,600,447 ) — — Domestic exchange settlement debits 37,549,292 (36,823,836 ) 725,456 — — 725,456 Other financial instruments 4,560,879 (4,474,909 ) 85,970 — — 85,970 ￦ 54,906,857 ￦ (41,298,745 ) ￦ 13,608,112 ￦ (10,975,398 ) ￦ (263,564 ) ￦ 2,369,150 December 31, 2021 Gross assets Gross liabilities Net amount in Non-offsetting Net amount Financial Cash (In millions of Korean won) Derivatives held for trading and derivative-linked securities ￦ 3,673,348 ￦ — ￦ 3,673,348 Derivatives held for hedging 188,828 — 188,828 ￦ (2,352,365 ) ￦ (235,749 ) ￦ 1,274,062 Unsettled spot exchange receivable 2,384,503 — 2,384,503 (2,380,556 ) — 3,947 Bonds purchased under repurchase agreements 5,955,194 — 5,955,194 (5,955,194 ) — — Domestic exchange settlement debits 43,497,849 (42,482,911 ) 1,014,938 — — 1,014,938 Other financial instruments 2,341,992 (2,327,904 ) 14,088 (3,209 ) — 10,879 ￦ 58,041,714 ￦ (44,810,815 ) ￦ 13,230,899 ￦ (10,691,324 ) ￦ (235,749 ) ￦ 2,303,826
Summary of Offsetting of Financial Liabilities	6.5.2 Details of financial liabilities subject to enforceable master netting agreements or similar arrangements as of December 31, 2020 and 2021, are as follows: December 31, 2020 Gross liabilities Gross assets Net amount in Non-offsetting Net amount Financial Cash (In millions of Korean won) Derivatives held for trading and derivative-linked securities ￦ 5,300,028 ￦ — ￦ 5,300,028 Derivatives held for hedging 208,825 — 208,825 ￦ (3,365,443 ) ￦ (77,324 ) ￦ 2,066,086 Unsettled spot exchange payable 3,434,887 — 3,434,887 (3,434,222 ) — 665 Bonds sold under repurchase agreements* 16,329,799 (11,800 ) 16,317,999 (16,317,999 ) — — Securities borrowing agreements 1,934,736 — 1,934,736 (1,934,736 ) — — Domestic exchange settlement credits 37,757,164 (36,823,835 ) 933,329 (933,329 ) — — Other financial instruments 4,764,991 (4,474,909 ) 290,082 — — 290,082 ￦ 69,730,430 ￦ (41,310,544 ) ￦ 28,419,886 ￦ (25,985,729 ) ￦ (77,324 ) ￦ 2,356,833 December 31, 2021 Gross liabilities Gross assets Net amount in Non-offsetting Net amount Financial Cash (In millions of Korean won) Derivatives held for trading and derivative-linked securities ￦ 4,132,915 ￦ — ￦ 4,132,915 Derivatives held for hedging 172,470 — 172,470 ￦ (3,069,591 ) ￦ (75,253 ) ￦ 1,160,541 Unsettled spot exchange payable 2,383,399 — 2,383,399 (2,380,556 ) — 2,843 Bonds sold under repurchase agreements* 14,372,761 — 14,372,761 (14,372,761 ) — — Securities borrowing agreements 2,826,885 — 2,826,885 (2,826,885 ) — — Domestic exchange settlement credits 47,608,341 (42,482,911 ) 5,125,430 (5,125,430 ) — — Other financial instruments 2,738,984 (2,327,904 ) 411,080 (3,209 ) — 407,871 ￦ 74,235,755 ￦ (44,810,815 ) ￦ 29,424,940 ￦ (27,778,432 ) ￦ (75,253 ) ￦ 1,571,255 * Includes bonds sold under repurchase agreements to customers.
Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings Text Block [Text Block]	6.2.2.2 In relation to changes in financial instruments classified as Level 3 of the fair value hierarchy, total gains or losses recognized in profit or loss for the period, and total gains or losses recognized in profit or loss from financial instruments held at the end of the reporting period for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 Net losses on financial Other operating Net interest income Net gains on Other operating Net interest income (In millions of Korean won) Total gains (losses) recognized in profit or loss for the period ￦ (489,703 ) ￦ 1,388 ￦ 22 ￦ 70,251 ￦ (56,329 ) ￦ — Total gains (losses) recognized in profit or loss from financial instruments held at the end of the reporting period (37,668 ) 1,331 — 129,824 (60,884 ) — 2021 Net gains on financial Other operating Net interest income (In millions of Korean won) Total gains recognized in profit or loss for the period ￦ 256,167 ￦ 86,236 ￦ — Total gains recognized in profit or loss from financial instruments held at the end of the reporting period 126,516 85,256 —
Summary of Sensitivity Analysis of Changes In Unobservable Inputs of Financial Assets and Financial Liabilities [Table Text Block]	Results of the sensitivity analysis of changes in unobservable inputs as of December 31, 2020 and 2021, are as follows: December 31, 2020 Profit or loss Other comprehensive income or loss Favorable changes Unfavorable changes Favorable changes Unfavorable changes (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: 1 Due from financial institutions ￦ 2 ￦ (2 ) ￦ 199 ￦ (222 ) Debt securities 4 35,790 (12,826 ) 2,123 (2,122 ) Equity securities 3 16,125 (8,275 ) 973 (744 ) Loans 5 3,316 (2,952 ) — — Derivatives held for trading 2 22,783 (25,013 ) — — Financial assets at fair value through other comprehensive income: Equity securities 3 — — 120,652 (73,434 ) Loans 6 — — 534 (518 ) ￦ 78,016 ￦ (49,068 ) ￦ 124,481 ￦ (77,040 ) Financial liabilities Financial liabilities designated at fair value through profit or loss 1 ￦ 46,859 ￦ (42,995 ) ￦ — ￦ — Derivatives held for trading 2 7,255 (7,139 ) — — ￦ 54,114 ￦ (50,134 ) ￦ — ￦ — December 31, 2021 Profit or loss Other comprehensive income or loss Favorable changes Unfavorable changes Favorable changes Unfavorable changes (In millions of Korean won) Financial assets Financial assets at fair value through profit or loss: 1 Due from financial institutions ￦ — ￦ — ￦ 19 ￦ (18 ) Debt securities 4 13,149 (12,562 ) 1,458 (1,402 ) Equity securities 3 11,259 (8,192 ) 1,049 (813 ) Loans 5 3,062 (2,742 ) — — Derivatives held for trading 2 19,328 (20,005 ) — — Financial assets at fair value through other comprehensive income: Equity securities 3 6,495 (5,145 ) 95,599 (71,171 ) Loans 6 — — 133 (131 ) ￦ 53,293 ￦ (48,646 ) ￦ 98,258 ￦ (73,535 ) Financial liabilities Financial liabilities designated at fair value through profit or loss 1 ￦ 78,355 ￦ (82,797 ) ￦ 78,356 ￦ (82,797 ) Derivatives held for trading 2 31,310 (29,309 ) 31,114 (29,105 ) ￦ 109,665 ￦ (112,106 ) ￦ 109,470 ￦ (111,902 ) 1 For financial instruments at fair value through profit or loss, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate, recovery rate, liquidation value by ±1%p and volatility of underlying asset, growth rate by ±1%p or ±10% and correlation coefficient by ±10%. 2 For derivative financial instruments, changes in fair value are calculated by shifting principal unobservable input parameters such as price of underlying asset and volatility by ± 10%. 3 For equity securities, changes in fair value are calculated by shifting principal unobservable input parameters such as correlation between discount rate (-1%p~1%p) (-1%p~1%p) (-1%p~1%p) (-1%p~1%p). 4 For beneficiary certificates, it is practically impossible to analyze sensitivity of changes in unobservable inputs. However, for beneficiary certificates whose underlying assets are real estates, changes in fair value are calculated by shifting rate of real estate price fluctuation by -1%p~1%p, and for beneficiary certificates whose underlying assets are equity investments, changes in fair value are calculated by shifting principal unobservable input parameters such as liquidation value by -1%p~1%p and discount rate by -1%p~1%p. There is no significant correlation among major unobservable inputs. 5 For loans, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate by -1%p~1%p. 6 For loans measured at fair value through other comprehensive income, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate and growth rate by ±1%p.
Summary of Purchase commitments of securitized debentures [Table Text Block]	The Group provided additional credit enhancement, such as purchase commitments, for the underlying assets of subsidiaries established for asset-backed securitization. Details of carrying amounts of the underlying assets and the associated liabilities as of December 31, 2020 and 2021, are as follows: December 31, December 31, (In millions of Korean won) Underlying assets Financial assets at fair value through profit or loss ￦ 180,180 ￦ 289,188 Loans measured at amortized cost* 3,272,228 3,724,204 ￦ 3,452,408 ￦ 4,013,392 Associated liabilities Debentures ￦ 3,450,505 ￦ 4,010,436 * Before netting of allowance

Due From Financial Institutio_2

Due From Financial Institutions at Amortized Cost (Tables)	12 Months Ended
	Dec. 31, 2021
Due From Financial Institution [Abstract]
Summary of Details of Due from Financial Institutions	7.1 Details of due from financial institutions as of December 31, 2020 and 2021, are as follows: Financial institutions Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Due from financial institutions in Korean won Due from the Bank of Korea The Bank of Korea 0.00 ~ 0.97 ￦ 11,242,803 ￦ 15,317,033 Due from banks Hana Bank and others 0.00 ~ 5.20 3,692,044 3,390,521 Due from others Korea Securities Finance Corporation and others 0.00 ~ 1.98 753,581 686,236 15,688,428 19,393,790 Due from financial institutions in foreign currencies Due from banks in foreign currencies The Bank of Korea and others 0.00 ~ 4.00 4,215,918 6,329,310 Time deposits in foreign currencies Bank of Communications Co., Ltd. and others 0.00 ~ 6.10 739,637 587,782 Due from others Societe Generale (Paris) and others 0.00 ~ 6.50 2,079,371 2,054,474 7,034,926 8,971,566 ￦ 22,723,354 ￦ 28,365,356 * Before netting of allowance
Summary of Restricted Cash and Cash Equivalents	7.2 Details of restricted due from financial institutions as of December 31, 2020 and 2021, are as follows: Financial institutions December 31, 2020 December 31, 2021 Reasons of restriction (In millions of Korean won) Due from financial institutions in Korean won Due from the Bank of Korea The Bank of Korea ￦ 11,242,803 ￦ 15,317,033 Bank of Korea Act Due from banks Shinhan Bank and others 772,986 803,445 Net settlement and others Due from others NH Investment & Securities Co., Ltd. and others 545,457 528,642 Derivatives margin account and others 12,561,246 16,649,120 Due from financial institutions in foreign currencies Due from banks in foreign currencies Bank of Indonesia and others 1,097,729 2,262,610 Indonesian law and others Time deposits in foreign currencies Bank of Communications Co., Ltd. and others 46,428 68,588 Bank Act of the State of New York and others Due from others Societe Generale (Paris) and others 1,597,960 1,774,388 Derivatives margin account and others 2,742,117 4,105,586 ￦15,303,363 ￦20,754,706 * Before netting of allowance
Summary of Changes in the Allowances for Due from Financial Institutions Losses	7.3 Changes in allowances for credit losses of due from financial institutions for the years ended December 31, 2020 and 2021, are as follows: 2020 12-month expected Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 3,164 ￦ 1,188 ￦ 360 Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Impairment — — — Reversal of credit losses (416 ) (1,128 ) — Business combination 154 — — Others 45 (26 ) (78 ) Ending ￦ 2,947 ￦ 34 ￦ 282 2021 12-month expected Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 2,947 ￦ 34 ￦ 282 Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Impairment — — — Reversal of credit losses (51 ) (35 ) (282 ) Others 73 1 — Ending ￦ 2,969 ￦ — ￦ —

Assets Pledged as Collateral (T

Assets Pledged as Collateral (Tables)	12 Months Ended
	Dec. 31, 2021
Pledged Assets [Abstract]
Schedule of assets pledged as collateral	8.1 Details of assets pledged as collateral as of December 31, 2020 and 2021, are as follows: December 31, 2020 Assets pledged Pledgee Carrying amount Reasons of pledge (In millions of Due from financial institutions Korea Federation of Savings Banks and others ￦ 1,293,930 Borrowings from bank and others Financial assets at fair value through profit or loss The Korea Securities Depository and others 10,733,047 Repurchase agreements The Korea Securities Depository and others 7,009,580 Securities borrowing transactions Samsung Futures Inc. and others 730,774 Derivatives transactions 18,473,401 Financial assets at fair value through other comprehensive income The Korea Securities Depository and others 2,216,165 Repurchase agreements The Korea Securities Depository and others 1,322,998 Securities borrowing transactions The Bank of Korea 2,837,452 Borrowings from the Bank of Korea The Bank of Korea 1,610,691 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 270,089 Derivatives transactions 8,257,395 Securities measured at amortized cost The Korea Securities Depository and others 664,438 Repurchase agreements The Bank of Korea 4,295,149 Borrowings from the Bank of Korea The Bank of Korea 3,677,922 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 103,748 Derivatives transactions Others 598,187 Others 9,339,444 Mortgage loans Others 10,699,721 Covered bond Real estate LGIM COMMERCIAL LENDING Ltd. and others 1,480,942 Borrowings from bank and others ￦ 49,544,833 December 31, 2021 Assets pledged Pledgee Carrying amount Reasons of pledge (In millions of Due from financial institutions Shinhan Banks and others ￦ 1,163,138 Borrowings from bank and others Financial assets at fair value through profit or loss The Korea Securities Depository and others 8,689,639 Repurchase agreements The Korea Securities Depository and others 9,294,924 Securities borrowing transactions Samsung Futures Inc. and others 1,039,656 Derivatives transactions 19,024,219 Financial assets at fair value through other comprehensive income The Korea Securities Depository and others 2,048,029 Repurchase agreements The Korea Securities Depository and others 1,523,593 Securities borrowing transactions The Bank of Korea 2,843,426 Borrowings from the Bank of Korea The Bank of Korea 1,249,049 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 709,390 Derivatives transactions 8,373,487 Securities measured at amortized cost The Korea Securities Depository and others 494,973 Repurchase agreements The Bank of Korea 4,847,855 Borrowings from the Bank of Korea The Bank of Korea 3,948,622 Settlement risk of the Bank of Korea Samsung Futures Inc. and others 144,014 Derivatives transactions Others 268,767 Others 9,704,231 Loans Others 9,659,575 Covered bond and others Real estate LGIM COMMERCIAL LENDING Ltd. and others 1,598,553 Borrowings from bank and others ￦ 49,523,203
Schedule of the fair values of collateral available to sell or repledge And Collateral Sold Or repledged	8.2 Fair value of collateral available to sell or repledge, and collateral sold or repledged, regardless of debtor’s default as of December 31, 2020 and 2021, are as follows: December 31, 2020 Fair value of collateral Fair value of collateral sold or repledged Total (In millions of Korean won) Securities ￦ 3,732,013 ￦ — ￦ 3,732,013 December 31, 2021 Fair value of collateral Fair value of collateral Total (In millions of Korean won) Securities ￦ 6,451,850 ￦ — ￦ 6,451,850

Derivative Financial Instrume_2

Derivative Financial Instruments and Hedge Accounting (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about hedges [abstract]
Summary of Derivative Financial Instruments	9.1 Details of derivative financial instruments held for trading as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Notional amount Assets Liabilities Notional amount Assets Liabilities (In millions of Korean won) Interest rate Forwards ￦ 1,824,000 ￦ 50,580 ￦ 107,218 ￦ 4,037,717 ￦ 140,126 ￦ 126,610 Futures* 4,540,235 43 1,834 6,479,692 1,903 2,464 Swaps 300,105,350 631,917 682,401 334,721,395 354,686 397,046 Options 14,779,000 248,437 302,134 12,547,000 176,274 199,567 321,248,585 930,977 1,093,587 357,785,804 672,989 725,687 Currency Forwards 78,255,991 1,712,560 1,986,239 105,509,405 1,296,083 934,944 Futures* 376,281 158 695 361,791 464 877 Swaps 49,756,478 1,897,636 1,349,919 65,028,025 1,082,873 1,331,597 Options 2,377,775 33,421 28,012 1,885,064 7,643 11,044 130,766,525 3,643,775 3,364,865 172,784,285 2,387,063 2,278,462 Stock and index Futures* 1,027,347 20,061 2,246 1,612,965 14,338 6,530 Swaps 5,434,057 423,297 123,242 5,207,198 322,888 132,619 Options 6,482,510 135,805 275,282 7,617,703 95,338 241,371 12,943,914 579,163 400,770 14,437,866 432,564 380,520 Credit Swaps 3,015,782 19,395 9,700 2,602,382 18,979 7,409 3,015,782 19,395 9,700 2,602,382 18,979 7,409 Commodity Futures* 11,609 151 81 6,370 43 82 Swaps 13,923 268 991 — — — 25,532 419 1,072 6,370 43 82 Others 1,476,310 36,783 144,076 1,695,540 20,904 117,629 ￦ 469,476,648 ￦ 5,210,512 ￦ 5,014,070 ￦ 549,312,247 ￦ 3,532,542 ￦ 3,509,789 * Gains or losses arising from some daily mark-to-market 9.3.2 Details of derivative instruments designated as fair value hedge as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 9,217,731 ￦ 158,914 ￦ 51,842 ￦ (23,022 ) Currency Forwards 2,172,192 128,038 2,616 97,394 ￦ 11,389,923 ￦ 286,952 ￦ 54,458 ￦ 74,372 December 31, 2021 2021 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 8,910,139 ￦ 127,290 ￦ 38,253 ￦ (33,227 ) Currency Forwards 1,705,213 2,436 54,855 (174,707 ) ￦ 10,615,352 ￦ 129,726 ￦ 93,108 ￦ (207,934 ) 9.4.2 Details of derivative instruments designated as cash flow hedge as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Notional Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 3,532,480 ￦ 1,286 ￦ 37,120 ￦ (11,940 ) Currency Swaps 2,857,435 40,835 116,124 (43,300 ) ￦ 6,389,915 ￦ 42,121 ￦ 153,244 ￦ (55,240 ) December 31, 2021 2021 Notional Assets Liabilities Changes in fair value (In millions of Korean won) Interest rate Swaps ￦ 4,553,250 ￦ 12,575 ￦ 9,532 ￦ 36,164 Currency Swaps 3,055,264 46,527 61,331 60,327 ￦ 7,608,514 ￦ 59,102 ￦ 70,863 ￦ 96,491 9.5.2 Details of financial instruments designated as hedge of net investments in foreign operations as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Currency Forwards ￦ 243,957 ￦ 5,800 ￦ 1,125 ￦ 14,406 Debentures in foreign currencies 842,112 — 842,112 74,363 ￦ 1,086,069 ￦ 5,800 ￦ 843,237 ￦ 88,769 December 31, 2021 2021 Notional amount Assets Liabilities Changes in fair value (In millions of Korean won) Currency Forwards ￦ 91,636 ￦ — ￦ 8,498 ￦ (8,494 ) Debentures in foreign currencies 1,273,227 — 1,273,227 (80,235 ) ￦ 1,364,863 ￦ — ￦ 1,281,725 ￦ (88,729 )
Summary of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows	9.2 Average price conditions of future nominal cash flows by type of hedge accounting as of December 31, 2020 and 2021, are as follows: December 31, 2020 1 year 2 years 3 years 4 years 5 years Over Total (In millions of Korean won) Fair value hedge Nominal amount of the hedging instrument ￦ 5,266,994 ￦ 1,083,877 ￦ 512,608 ￦ 620,788 ￦ 1,462,964 ￦ 2,442,692 ￦ 11,389,923 Average price condition (%) 0.76 0.81 1.00 1.07 1.21 1.14 0.97 Average price condition (USD/KRW) 1,160.33 1,115.45 1,151.50 — — — 1,157.28 Average price condition (EUR/KRW) 1,353.28 — 1,366.30 — — — 1,353.36 Average price condition (AUD/KRW) 835.43 — — — — — 835.43 Average price condition (GBP/KRW) 1,546.54 — — — — — 1,546.54 Cash flow hedge Nominal amount of the hedging instrument ￦ 2,568,922 ￦ 1,767,357 ￦ 1,277,053 ￦ 166,643 ￦ 509,940 ￦ 100,000 ￦ 6,389,915 Average price condition (%) 0.83 1.66 2.48 2.00 1.63 1.67 1.36 Average price condition (USD/KRW) 1,113.33 1,160.46 1,181.36 1,128.30 1,142.05 — 1,152.37 Average price condition (EUR/KRW) 1,306.76 1,312.75 1,321.00 — 1,340.64 — 1,312.93 Average price condition (AUD/KRW) 837.00 — — — — — 837.00 Average price condition (SGD/KRW) 831.49 — 866.14 — — — 858.33 Hedge of net investments in foreign operations Nominal amount of the hedging instrument ￦ 217,274 ￦ 26,683 ￦ — ￦ — ￦ — ￦ — ￦ 243,957 Average price condition (USD/KRW) 1,111.45 — — — — — 1,111.45 Average price condition (GBP/KRW) — 1,465.26 — — — — 1,465.26 December 31, 2021 1 year 2 years 3 years 4 years 5 years Over Total (In millions of Korean won) Fair value hedge Nominal amount of the hedging instrument ￦ 2,223,113 ￦ 1,423,760 ￦ 967,376 ￦ 2,153,200 ￦ 1,428,673 ￦ 2,419,230 ￦ 10,615,352 Average price condition (%) 0.94 1.23 1.04 1.16 1.06 1.39 1.18 Average price condition (USD/KRW) 1,144.74 1,154.78 1,169.72 — — — 1,150.30 Average price condition (EUR/KRW) 1,359.59 1,363.95 1,394.84 — 1,458.92 — 1,409.23 Average price condition (AUD/KRW) 859.41 — — — — — 859.41 Average price condition (GBP/KRW) 1,554.65 — — 1,620.05 — — 1,557.47 Cash flow hedge Nominal amount of the hedging instrument ￦ 4,150,546 ￦ 1,763,372 ￦ 322,735 ￦ 641,733 ￦ 580,128 ￦ 150,000 ￦ 7,608,514 Average price condition (%) 1.01 1.51 2.06 1.87 1.84 2.12 1.21 Average price condition (USD/KRW) 1,159.92 1,178.13 1,145.05 1,139.40 1,123.13 — 1,152.89 Average price condition (EUR/KRW) 1,312.75 1,321.00 1,364.00 1,374.73 — — 1,351.76 Average price condition (AUD/KRW) — — 856.40 851.50 — — 853.40 Average price condition (SGD/KRW) — 866.14 — — — — 866.14 Hedge of net investments in foreign operations Nominal amount of the hedging instrument ￦ 91,636 ￦ — ￦ — ￦ — ￦ — ￦ — ￦ 91,636 Average price condition (USD/KRW) 1,071.00 — — — — — 1,071.00 Average price condition (GBP/KRW) 1,465.26 — — — — — 1,465.26
Summary of Detailed Information about Hedged Items	9.3.1 Details of fair value hedged items as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Carrying amount Accumulated amount of Changes in fair value Assets Liabilities Assets Liabilities (In millions of Korean won) Hedge accounting Interest rate Debt securities in Korean won ￦ 1,001,957 ￦ — ￦ 5,888 ￦ — ￦ 402 Debt securities in foreign currencies 2,712,980 — 62,922 — 42,382 Deposits in foreign currencies — 121,768 — 2,088 (4,491 ) Debentures in Korean won — 3,623,161 — (6,839 ) 27,909 Debentures in foreign currencies — 1,985,333 — 81,333 (37,438 ) 3,714,937 5,730,262 68,810 76,582 28,764 Currency Debt securities in foreign currencies 2,669,410 — 310,745 — (40,710 ) 2,669,410 — 310,745 — (40,710 ) ￦ 6,384,347 ￦ 5,730,262 ￦ 379,555 ￦ 76,582 ￦ (11,946 ) December 31, 2021 2021 Carrying amount Accumulated amount of Changes in fair value Assets Liabilities Assets Liabilities (In millions of Korean won) Hedge accounting Interest rate Debt securities in Korean won ￦ 1,627,228 ￦ — ￦ (20,272 ) ￦ — ￦ (26,247 ) Debt securities in foreign currencies 3,567,662 — (22,384 ) — (71,246 ) Deposits in foreign currencies — 93,521 — (1,319 ) 3,222 Debentures in Korean won — 2,470,123 — (79,877 ) 70,308 Debentures in foreign currencies — 1,154,178 — 27,953 45,132 5,194,890 3,717,822 (42,656 ) (53,243 ) 21,169 Currency Debt securities in foreign currencies 2,443,893 — 133,268 — 180,676 2,443,893 — 133,268 — 180,676 ￦ 7,638,783 ￦ 3,717,822 ￦ 90,612 ￦ (53,243) ￦ 201,845
Summary of Information About Amounts that Affected Statement of Comprehensive Income as Result of Hedge Accounting	9.3.3 Details of hedge ineffectiveness recognized in profit or loss on derivative instruments designated as fair value hedge for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Hedge accounting Interest rate ￦ 2,753 ￦ 5,742 ￦ (12,058 ) Currency (13,239 ) 56,684 5,969 ￦ (10,486 ) ￦ 62,426 ￦ (6,089 ) 9.3.4 Gains or losses on fair value hedging instruments and hedged items attributable to the hedged risk for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains (losses) on hedging instruments ￦ 34,070 ￦ 89,179 ￦ (187,364 ) Gains (losses) on hedged items attributable to the hedged risk (44,655 ) (26,899 ) 188,556 ￦ (10,585 ) ￦ 62,280 ￦ 1,192 9.4.1 Details of cash flow hedged items as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: Cash flow hedge reserve Changes in fair value December 31, 2020 December 31, 2021 2020 2021 (In millions of Korean won) Hedge accounting Interest rate risk ￦ (22,439 ) ￦ 4,864 ￦ 12,172 ￦ (36,428 ) Currency risk (6,158 ) (12,597 ) 1,065 12,605 ￦ (28,597 ) ￦ (7,733 ) ￦ 13,237 ￦ (23,823 ) 9.4.3 Gains or losses on cash flow hedging instruments and hedged items attributable to the hedged risk for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains (losses) on hedging instruments: ￦ (64,531 ) ￦ (55,240 ) ￦ 96,491 Effective portion of gains (losses) on cash flow hedging instruments (recognized in other comprehensive income or loss) (65,323 ) (48,034 ) 95,478 Ineffective portion of gains (losses) on cash flow hedging instruments (recognized in profit or loss) 792 (7,206 ) 1,013 9.4.4 Amounts recognized in other comprehensive income (loss) and reclassified from equity to profit or loss related to derivative instruments designated as cash allow hedge for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Other comprehensive income (loss) ￦ (65,323 ) ￦ (48,034 ) ￦ 95,478 Reclassification to profit or loss 21,604 39,190 (53,080 ) Income tax effect 10,537 7,580 (21,534 ) ￦ (33,182 ) ￦ (1,264 ) ￦ 20,864 9.5.1 Details of net investments in foreign operations hedged items as of December 31, 2020 and 2021 and changes in fair value for the years ended December 31, 2020 and 2021, are as follows: Foreign currency translation reserve Changes in fair value December 31, 2020 December 31, 2021 2020 2021 (In millions of Korean won) Hedge accounting Currency risk ￦ 22,278 ￦ (35,658 ) ￦ (88,769 ) ￦ 88,729
Summary of Fair Value of Non Derivative Financial Instruments	9.5.3 Fair value of non-derivative December 31, 2020 December 31, 2021 (In millions of Korean won) Debentures in for e ￦ 852,570 ￦ 1,275,291
Summary of Gains or Losses from Hedging Instruments and Hedged Items Attributable to the Hedged Risk	9.5.4 Gains or losses on net inv e 2019 2020 2021 (In millions of Korean won) Gains (losses) on hedging instruments: ￦ (13,410 ) ￦ 88,769 ￦ (88,729 ) Effective portion of gains (losses) on hedge of net investments in foreign operations (recognized in other comprehensive income or loss) (13,410 ) 88,769 (88,729 ) Ineffective portion of gains (losses) on hedge of net investments in foreign operations (recognized in profit or loss) — — —
Summary of Effective Portion of Gains or Losses on Hedging Instruments Recognized in Other Comprehensive Income	9.5.5 Effective portion of gains or losses on net investments in foreign operations hedging instruments recognized in other comprehensive income (loss) for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Other comprehensive income (loss) ￦ (13,410 ) ￦ 88,769 ￦ (88,729 ) Reclassification to profit or loss 1,316 — 5,195 Income tax eff e 3,194 (24,500 ) 25,599 ￦ (8,900 ) ￦ 64,269 ￦ (57,935 )
Summary of Interest Rate Benchmark Reform	Details of the Group’s exposure to hedging relationships related to the interest rate benchmark reform as of December 31, 2021, are as follows: December 31, 2021 Interest rate benchmark Currency Carrying amount of non-derivative assets Carrying amount of non-derivative liabilities Notional amount of (In millions of Korean won and millions of US dollars) CD#3M KRW 3,123,388 2,470,123 5,690,000 USD#LIBOR#3M USD 2,695 2,829 5,511 USD#LIBOR#6M USD 224 — 225

Loans Measured at Amortized C_2

Loans Measured at Amortized Cost (Tables)	12 Months Ended
	Dec. 31, 2021
Trade and other receivables [abstract]
Summary of Loans	10.1 Details of loans as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Loans measured at amortized cost ￦ 379,734,020 ￦ 420,910,259 Deferred loan origination fees and costs 716,327 674,069 Less: Allowances for credit losses (3,283,363 ) (3,684,055 ) ￦ 377,166,984 ￦ 417,900,273
Summary of Loans for other Banks	10.2 Details of loans to banks as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Loans measured at amortized cost ￦ 5,577,728 ￦ 8,325,177 Less: Allowances for credit losses (682 ) (443 ) ￦ 5,577,046 ￦ 8,324,734
Summary of Loan Types and Customer Types of Loans to Customers other than Banks	10.3 Details of loan types and customer types of loans to customers other than banks as of December 31, 2020 and 2021, are as follows: December 31, 2020 Retail Corporate Credit card Total (In millions of Korean won) Loans in Korean won ￦ 175,062,187 ￦ 142,812,751 ￦ — ￦ 317,874,938 Loans in foreign currencies 3,092,630 16,159,722 — 19,252,352 Domestic import usance bills — 2,152,059 — 2,152,059 Off-shore — 1,203,737 — 1,203,737 Call loans — 1,582,251 — 1,582,251 Bills bought in Korean won — 1,620 — 1,620 Bills bought in foreign currencies — 1,739,262 — 1,739,262 Guarantee payments under acceptances and guarantees 10 8,011 — 8,021 Credit card receivables in Korean won — — 18,734,560 18,734,560 Credit card receivables in foreign currencies — — 63,071 63,071 Bonds purchased under repurchase agreements — 3,175,080 — 3,175,080 Privately placed bonds — 1,154,162 — 1,154,162 Factored receivables 104 3 — 107 Lease receivables 1,105,001 335,582 — 1,440,583 Loans for installment credit 6,440,521 50,295 — 6,490,816 185,700,453 170,374,535 18,797,631 374,872,619 Proportion (%) 49.54 45.45 5.01 100.00 Less: Allowances for credit losses (910,088 ) (1,671,098 ) (701,495 ) (3,282,681 ) ￦ 184,790,365 ￦ 168,703,437 ￦ 18,096,136 ￦ 371,589,938 December 31, 2021 Retail Corporate Credit card Total (In millions of Korean won) Loans in Korean won ￦ 184,872,384 ￦ 162,081,901 ￦ — ￦ 346,954,285 Loans in foreign currencies 3,990,253 20,865,495 — 24,855,748 Domestic import usance bills — 3,311,142 — 3,311,142 Off-shore — 1,064,623 — 1,064,623 Call loans — 902,301 — 902,301 Bills bought in Korean won — 2,209 — 2,209 Bills bought in foreign currencies — 2,001,046 — 2,001,046 Guarantee payments under acceptances and guarantees 7 20,773 — 20,780 Credit card receivables in Korean won — — 20,766,340 20,766,340 Credit card receivables in foreign currencies — — 57,980 57,980 Bonds purchased under repurchase agreements — 4,855,194 — 4,855,194 Privately placed bonds — 758,557 — 758,557 Factored receivables 113 458 — 571 Lease receivables 778,425 513,714 — 1,292,139 Loans for installment credit 6,265,896 150,340 — 6,416,236 195,907,078 196,527,753 20,824,320 413,259,151 Proportion (%) 47.40 47.56 5.04 100.00 Less: Allowances for credit losses (1,004,995 ) (1,886,473 ) (792,144 ) (3,683,612 ) ￦ 194,902,083 ￦ 194,641,280 ￦ 20,032,176 ￦ 409,575,539
Summary of Changes in Deferred Loan Origination Fees and Costs	10.4 Changes in deferred loan origination fees and costs for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Increase Decrease Business combination Others Ending (In millions of Korean won) Deferred loan origination costs Loans in Korean won ￦ 645,305 ￦ 502,044 ￦ (473,392 ) ￦ — ￦ — ￦ 673,957 Others 1 96,378 53,345 (63,509 ) 9,376 — 95,590 741,683 555,389 (536,901 ) 9,376 — 769,547 Deferred loan origination fees Loans in Korean won 8,600 6,681 (6,133 ) — — 9,148 Others 2 4,813 21,636 (26,396 ) 48,117 (4,098 ) 44,072 13,413 28,317 (32,529 ) 48,117 (4,098 ) 53,220 ￦ 728,270 ￦ 527,072 ￦ (504,372 ) ￦ (38,741 ) ￦ 4,098 ￦ 716,327 2021 Beginning Increase Decrease Others Ending (In millions of Korean won) Deferred loan origination costs Loans in Korean won ￦ 673,957 ￦ 418,732 ￦ (424,785 ) ￦ — ￦ 667,904 Others 1 95,590 44,728 (63,619 ) (4 ) 76,695 769,547 463,460 (488,404 ) (4 ) 744,599 Deferred loan origination fees Loans in Korean won 9,148 11,909 (3,556 ) — 17,501 Others 2 44,072 32,667 (27,332 ) 3,622 53,029 53,220 44,576 (30,888 ) 3,622 70,530 ￦ 716,327 ￦ 418,884 ￦ (457,516 ) ￦ (3,626 ) ￦ 674,069 1 Includes deferred loan origination costs related to credit card receivables, loans for installment credit, and finance lease receivables. 2 Includes deferred loan origination fees related to loans in foreign currencies executed by PT Bank KB Bukopin Tbk and PRASAC Microfinance Institution Plc.

Allowances for Credit Losses (T

Allowances for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2021
Reconciliation of changes in allowance account for credit losses of financial assets [abstract]
Summary of Changes in the Allowances for Loan Losses	11.1 Changes in allowances for credit losses of loans measured at amortized cost for the years ended December 31, 2020 and 2021, are as follows: 2020 Retail Corporate Credit card 12-month expected credit losses Lifetime expected credit 12-month credit losses Lifetime expected credit 12-month Lifetime expected credit Non-impaired Impaired Non-impaired Impaired Non-impaired Impaired (In millions of Korean won) Beginning ￦ 278,380 ￦ 224,905 ￦ 208,037 ￦ 215,069 ￦ 290,310 ￦ 451,607 ￦ 209,651 ￦ 266,183 ￦ 263,874 Transfer between stages: Transfer to 12-month 123,666 (121,970 ) (1,696 ) 119,723 (111,708 ) (8,015 ) 48,959 (47,611 ) (1,348 ) Transfer to lifetime expected credit losses (91,410 ) 182,076 (90,666 ) (56,655 ) 146,690 (90,035 ) (25,227 ) 26,379 (1,152 ) Impairment (3,301 ) (131,852 ) 135,153 (3,365 ) (48,773 ) 52,138 (2,273 ) (13,657 ) 15,930 Write-offs — (5 ) (460,734 ) — (1 ) (321,583 ) — — (502,275 ) Sales (1,561 ) (99 ) (1,131 ) (8 ) — (21,069 ) — — — Provision (reversal) for credit losses 1,2 49,459 78,413 428,220 (2,059 ) 113,335 180,162 (26,042 ) 2,925 496,162 Business combination 50,664 9,545 53,532 99,824 24,303 668,426 89 — 4,409 Others (exchange differences, etc.) (2,092 ) (435 ) (5,010 ) (3,747 ) (3,219 ) (19,570 ) — — (13,481 ) Ending 3 ￦ 403,805 ￦ 240,578 ￦ 265,705 ￦ 368,782 ￦ 410,937 ￦ 892,061 ￦ 205,157 ￦ 234,219 ￦ 262,119 2021 Retail Corporate Credit card 12-month expected credit losses Lifetime expected credit 12-month credit losses Lifetime expected credit 12-month Lifetime expected credit Non-impaired Impaired Non-impaired Impaired Non-impaired Impaired (In millions of Korean won) Beginning ￦ 403,805 ￦ 240,578 ￦ 265,705 ￦ 368,782 ￦ 410,937 ￦ 892,061 ￦ 205,157 ￦ 234,219 ￦ 262,119 Transfer between stages: Transfer to 12-month 125,634 (120,132 ) (5,502 ) 133,798 (71,772 ) (62,026 ) 45,938 (44,858 ) (1,080 ) Transfer to lifetime expected credit losses (97,040 ) 115,427 (18,387 ) (71,902 ) 92,245 (20,343 ) (34,208 ) 35,846 (1,638 ) Impairment (6,312 ) (49,244 ) 55,556 (2,942 ) (42,158 ) 45,100 (2,228 ) (12,580 ) 14,808 Write-offs — 12 (411,083 ) — (3 ) (239,815 ) — — (440,721 ) Sales (1,112 ) (53 ) (3,592 ) (179 ) — (16,257 ) — — — Provision (reversal) for credit losses 1,2 40,616 52,528 397,492 14,299 88,230 338,746 (39,533 ) 110,022 474,041 Business combination 8,315 2,223 7,194 — — 1,654 — — — Others (exchange differences, etc.) 77 532 1,758 5,942 675 21,844 42 — (13,202 ) Ending 3 ￦ 473,983 ￦ 241,871 ￦ 289,141 ￦ 447,798 ￦ 478,154 ￦ 960,964 ￦ 175,168 ￦ 322,649 ￦ 294,327 1 Provision for credit losses in the consolidated statements of comprehensive income also includes provision (reversal) for credit losses of due from financial institutions (Note 7.3), provision (reversal) for credit losses of financial investments (Note 12.5), provision (reversal) for credit losses of unused commitments, acceptances and guarantees (Note 24.2), provision (reversal) for credit losses of financial guarantee contracts (Note 24.3), and provision (reversal) for credit losses of other financial assets (Note 19.2). 2 Includes ￦ 379,179 million and ￦ 387,860 million of collections from written-off 3 Includes additional allowances of ￦ 43,777 million and ￦ 50,360 million for industries and borrowers which are highly affected by COVID-19 (non-impaired)
Summary of Changes in the Book Value of Loans at Amortized Cost	11.2 Changes in gross carrying amount of loans for the years ended December 31, 2020 and 2021, are as follows: 2020 12-month credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 316,377,009 ￦ 23,814,108 ￦ 1,900,958 Transfer between stages: Transfer to 12-month 26,751,021 (26,629,210 ) (121,811 ) Transfer to lifetime expected credit losses (non-impaired) (33,475,491 ) 34,603,648 (1,128,157 ) Transfer to lifetime expected credit losses (impaired) (596,861 ) (2,287,196 ) 2,884,057 Write-offs — (6 ) (1,284,592 ) Sales (4,324,146 ) (20,907 ) (200,182 ) Business combination 7,029,580 570,710 1,711,823 Net increase (decrease) (execution, repayment, and others) 36,757,668 (1,546,945 ) (334,731 ) Ending ￦ 348,518,780 ￦ 28,504,202 ￦ 3,427,365 2021 12-month credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 348,518,780 ￦ 28,504,202 ￦ 3,427,365 Transfer between stages: Transfer to 12-month 31,046,440 (30,615,747 ) (430,693 ) Transfer to lifetime expected credit losses (non-impaired) (36,815,970 ) 37,276,737 (460,767 ) Transfer to lifetime expected credit losses (impaired) (668,120 ) (1,486,835 ) 2,154,955 Write-offs — 9 (1,091,619 ) Sales (2,892,774 ) (8,541 ) (151,714 ) Business combination 116,067 3,924 12,808 Net increase (decrease) (execution, repayment, and others) 46,013,068 (895,012 ) 27,765 Ending ￦ 385,317,491 ￦ 32,778,737 ￦ 3,488,100

Financial Assets at Fair Valu_2

Financial Assets at Fair Value through Profit or Loss and Financial Investments (Tables)	12 Months Ended
	Dec. 31, 2021
Current financial assets at fair value through profit or loss [abstract]
Summary of Financial Assets at Fair Value Through Profit or Loss and Financial Investments	12.1 Details of financial assets at fair value through profit or loss and financial investments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial assets at fair value through profit or loss Debt securities: Government and public bonds ￦ 9,315,317 ￦ 8,294,084 Financial bonds 17,897,348 16,887,594 Corporate bonds 3,997,753 5,433,010 Asset-backed securities 236,130 197,865 Beneficiary certificates 14,200,802 15,849,129 Derivative-linked securities 2,218,502 1,543,188 Other debt securities 10,549,248 14,797,822 Equity securities: Stocks 1,632,619 1,804,507 Other equity securities 459,694 614,956 Loans: Privately placed bonds 212,021 230,006 Other loans 125,962 39,290 Due from financial institutions: Other due from financial institutions 100,094 200,742 Others 89,965 113,622 ￦ 61,035,455 ￦ 66,005,815 Financial investments Financial assets at fair value through other comprehensive income Debt securities: Government and public bonds ￦ 14,735,340 ￦ 14,317,477 Financial bonds 23,194,387 21,928,735 Corporate bonds 18,721,327 18,986,005 Asset-backed securities 1,795,840 996,428 Other debt securities 9,995 30,866 Equity securities: Stocks 2,852,158 3,588,415 Equity investments 37,602 27,211 Other equity securities 185,139 187,502 Loans: Privately placed bonds 265,426 299,634 Other loans 27,983 13,970 61,825,197 60,376,243 Financial assets at amortized cost Debt securities: Government and public bonds 17,193,289 21,447,622 Financial bonds 5,678,949 3,850,954 Corporate bonds 8,181,961 12,246,441 Asset-backed securities 5,788,587 6,899,675 Other debt securities 30,392 31,105 Less: Allowances for credit losses (2,949 ) (4,169 ) 36,870,229 44,471,628 ￦ 98,695,426 ￦ 104,847,871
Summary of Dividend Incomes from the Equity Securities	12.2 Dividend income from equity securities designated at fair value through other comprehensive income for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 From the equity securities From the equity securities held From the equity securities From the equity securities held (In millions of Korean won) Equity securities measured at fair value through other comprehensive income: Stocks Listed ￦ 7,000 ￦ 11,843 ￦ 7,106 ￦ 300 Unlisted — 22,241 372 19,035 Equity investments — 285 — 114 Other equity securities — 3,755 — 6,877 ￦ 7,000 ￦ 38,124 ￦ 7,478 ￦ 26,326
Summary of Derecognized Equity Securities Measured at Fair Value Through Other Comprehensive Income	12.3 Derecognized equity securities measured at fair value through other comprehensive income for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 Disposal price Accumulated disposal date Disposal price Accumulated disposal date (In millions of Korean won) Equity securities measured at fair value through other comprehensive income: Stocks Listed ￦ 516,883 ￦ 326,394 ￦ 575,288 ￦ (313,427 ) Unlisted 13 13 5,577 4,559 Equity investments 3 3 — — ￦ 516,899 ￦ 326,410 ￦ 580,865 ￦ (308,868 )
Summary of Provision and Reversal for the Allowance of Financial Investments	12.4 Provision (reversal) for credit losses of financial investments for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 Provision Reversal Total (In millions of Korean won) Securities measured at fair value through other comprehensive income ￦ 1,537 ￦ (1,144 ) ￦ 393 Loans measured at fair value through other comprehensive income 170 (982 ) (812 ) Securities measured at amortized cost 216 (280 ) (64 ) ￦ 1,923 ￦ (2,406 ) ￦ (483 ) 2020 Provision Reversal Total (In millions of Korean won) Securities measured at fair value through other comprehensive income ￦ 4,297 ￦ (229 ) ￦ 4,068 Loans measured at fair value through other comprehensive income 202 (316 ) (114 ) Securities measured at amortized cost 1,916 (636 ) 1,280 ￦ 6,415 ￦ (1,181 ) ￦ 5,234 2021 Provision Reversal Total (In millions of Korean won) Securities measured at fair value through other comprehensive income ￦ 7,466 ￦ (385 ) ￦ 7,081 Loans measured at fair value through other comprehensive income 237 (15 ) 222 Securities measured at amortized cost 1,892 (691 ) 1,201 ￦ 9,595 ￦ (1,091 ) ￦ 8,504
Summary of Changes in the Allowances for Credit Losses of Financial Investments	12.5 Changes in allowances for credit losses of financial investments for the years ended December 31, 2020 and 2021, are as follows: 2020 12-month expected credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 5,370 ￦ — ￦ — Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Sales (589 ) — — Provision for credit losses 5,195 39 — Others (68 ) — 73 Ending ￦ 9,908 ￦ 39 ￦ 73 2021 12-month expected credit losses Lifetime expected credit losses Non-impaired Impaired (In millions of Korean won) Beginning ￦ 9,908 ￦ 39 ￦ 73 Transfer between stages: Transfer to 12-month — — — Transfer to lifetime expected credit losses — — — Sales (1,568 ) (4 ) — Provision (reversal) for credit losses 8,512 (11 ) 3 Others (32 ) 4 — Ending ￦ 16,820 ￦ 28 ￦ 76

Investments in Associates and_2

Investments in Associates and Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of associates [abstract]
Disclosure Of Interests In Associates Explanatory	13.1 Details of investments in associates and joint ventures as of December 31, 2020 and 2021, are as follows: December 31, 2020 Ownership Acquisition Share of net Carrying Industry Location (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 1 15.19 ￦ 551 ￦ 1,279 ￦ 1,279 Investment finance Korea KB GwS Private Securities Investment Trust 26.74 113,880 142,799 141,359 Investment finance Korea KB-KDBC Pre-IPO 2 66.66 13,601 16,042 16,042 Investment finance Korea KB Star Office Private Real Estate Master Fund No.1 21.05 20,000 20,413 20,066 Investment finance Korea Balhae Infrastructure Company 1 12.61 106,107 106,624 106,624 Investment finance Korea Aju Good Technology Venture Fund 38.46 17,113 21,351 21,348 Investment finance Korea SY Auto Capital Co., Ltd. 49.00 9,800 18,713 16,144 Auto loans Korea Incheon Bridge Co., Ltd. 1 14.99 9,158 (18,100 ) — Operation of highways and related facilities Korea Big Dipper Co., Ltd. 25.14 440 (5 ) — Research, consulting, and big data Korea Paycoms Co., Ltd. 3 11.70 800 72 198 System software publishing Korea Food Factory Co., Ltd. 4 22.22 1,000 632 1,281 Farm product distribution Korea KBSP Private Equity Fund No.4 1 14.95 6,100 5,950 5,950 Investment finance Korea KB Private Equity Fund No.3 1 15.69 — 94 94 Investment finance Korea Korea Credit Bureau Co., Ltd. 1 9.00 4,500 7,153 7,153 Credit information Korea KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 25.00 9,739 9,845 9,845 Investment finance Korea Keystone-Hyundai Securities No.1 Private Equity Fund 1 4.49 1,908 1,556 1,556 Investment finance Korea KB Social Impact Investment Fund 30.00 3,000 2,874 2,874 Investment finance Korea KB-Solidus 2 43.33 48,677 45,516 46,213 Investment finance Korea POSCO-KB 31.25 10,375 12,895 12,895 Investment finance Korea KB-TS 2 56.00 16,576 17,630 17,630 Investment finance Korea KB-Brain Scale-up 2 42.55 26,050 27,513 26,763 Investment finance Korea KB-SJ 1 18.52 4,500 4,133 4,133 Investment finance Korea UNION Media Commerce Fund 28.99 1,000 960 960 Investment Korea KB-Stonebridge 1 14.56 14,308 16,636 16,636 Investment finance Korea KB SPROTT Renewable Private Equity Fund No.1 2 37.69 5,795 5,049 5,049 Investment finance Korea KB-UTC 2 44.29 17,416 16,999 16,999 Investment finance Korea WJ Private Equity Fund No.1 26.95 10,000 9,711 9,711 Investment finance Korea All Together Korea Fund No.2 5 99.99 10,000 10,023 10,023 Asset management Korea KB-NAU 1 12.00 5,700 5,611 5,611 Asset management Korea JR Global REIT 26.07 215,854 215,854 215,854 Real estate management Korea Project Vanilla Co., Ltd. 49.00 2,450 2,151 2,151 Investment finance Korea December & Company Inc. 1 17.63 24,849 24,402 24,402 Investment finance Korea 2020 KB Fintech Renaissance Fund 1 5.05 550 547 547 Investment finance Korea KB Material and Parts No.1 PEF 1 14.47 3,400 3,371 3,371 Investment finance Korea FineKB Private Equity Fund No.1 25.00 — — — Investment finance Korea Others 2,475 1,004 674 ￦ 737,672 ￦ 757,297 ￦ 771,435 December 31, 2021 Ownership Acquisition Share of net Carrying Industry Location (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 1 15.19 ￦ 259 ￦ 1,622 ￦ 1,622 Investment finance Korea KB-KDBC Pre-IPO 2 66.66 8,801 11,789 11,789 Investment finance Korea KB Star Office Private Real Estate Master Fund No.1 21.05 20,000 26,240 26,240 Investment finance Korea Balhae Infrastructure Company 1 12.61 105,924 99,785 99,785 Investment finance Korea Aju Good Technology Venture Fund 38.46 12,343 22,921 22,921 Investment finance Korea SY Auto Capital Co., Ltd. 49.00 9,800 19,835 18,222 Auto loans Korea Incheon Bridge Co., Ltd. 1 14.99 9,158 (19,481 ) — Operation of highways and related facilities Korea Big Dipper Co., Ltd. 25.14 440 (147 ) — Research, consulting, and big data Korea Paycoms Co., Ltd. 3 11.05 800 181 525 System software publishing Korea Food Factory Co., Ltd. 4 22.22 1,000 633 1,320 Farm product distribution Korea KBSP Private Equity Fund No.4 1 14.95 6,100 5,628 5,628 Investment finance Korea Korea Credit Bureau Co., Ltd. 1 9.00 4,500 4,497 4,497 Credit information Korea KB Social Impact Investment Fund 30.00 4,500 4,282 4,282 Investment finance Korea KB-Solidus 2 43.33 45,557 48,201 48,898 Investment finance Korea POSCO-KB 31.25 2,776 5,413 5,413 Investment finance Korea KB-TS 2 56.00 14,280 16,828 16,828 Investment finance Korea KB-Brain Scale-up 2 42.55 25,250 29,669 28,919 Investment finance Korea KB-SJ 1 18.52 4,999 4,146 4,146 Investment finance Korea UNION Media Commerce Fund 28.99 1,000 959 959 Investment finance Korea KB-Stonebridge 1 14.56 21,641 21,948 21,948 Investment finance Korea KB SPROTT Renewable Private Equity Fund No.1 2 37.69 5,795 4,680 4,680 Investment finance Korea KB-UTC 2 44.29 21,375 20,972 20,972 Investment finance Korea WJ Private Equity Fund No.1 26.95 10,000 9,604 9,604 Investment finance Korea All Together Korea Fund No.2 5 99.99 10,000 10,070 10,070 Asset management Korea KB-NAU 1 12.00 13,392 15,254 15,254 Asset management Korea Project Vanilla Co., Ltd. 49.00 2,450 525 525 Investment finance Korea December & Company Inc. 1 16.78 25,330 9,054 21,388 Investment finance Korea 2020 KB Fintech Renaissance Fund 1 5.05 550 618 618 Investment finance Korea KB Material and Parts No.1 PEF 1 14.47 3,400 3,343 3,343 Investment finance Korea FineKB Private Equity Fund No.1 25.00 8,375 8,067 8,067 Investment finance Korea KB Bio Private Equity No.3 Ltd. 1 12.20 10,000 9,950 9,950 Investment finance Korea G payment Joint Stock Company 43.84 9,029 3,175 9,350 Investment advisory and securities trading Vietnam 498 Seventh Owners LLC 6 49.90 166,851 — — Real estate investment United States Smart Korea KB Future9-Sejong Venture Fund 38.46 1,000 962 962 Investment finance Korea KB-KTB 2 50.50 5,600 5,503 5,554 Investment finance Korea KB-SOLIDUS 2 88.23 1,800 1,800 1,800 Investment finance Korea Paramark KB Fund No.1 20.69 2,040 1,850 1,850 Investment finance Korea Others 2,475 81 789 ￦ 598,590 ￦ 410,457 ￦ 448,718 1 As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies. 2 In order to direct relevant activities, it is necessary to obtain the consent of the two co-operative 3 The ownership of Paycoms Co., Ltd. would be 22.96 21.84 4 The ownership of Food Factory Co., Ltd. would be 30.00 30.00 5 As of December 31, 2020 and 2021, the Group participates in the investment management committee but cannot exercise control. 6 The investment was classified as assets of a disposal group held for sale as of December 31, 2021.
Disclosure Of Reconciliation Of Summarised Financial Information Of Associate Accounted For Using Equity Method To Carrying Amount Of Interest In Associate Explanatory	13.2 Condensed financial information, adjustments to the carrying amount, and dividend from major investments in associates and joint ventures as of and for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 * Total assets Total Paid-in Equity Share of net Unrealized gains and others Consolidated amount (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 8,423 ￦ 3 ￦ 5,940 ￦ 8,420 ￦ 1,279 ￦ — ￦ 1,279 KB GwS Private Securities Investment Trust 534,764 741 425,814 534,023 142,799 (1,440 ) 141,359 KB-KDBC Pre-IPO 24,655 592 20,400 24,063 16,042 — 16,042 KB Star Office Private Real Estate Master Fund No.1 231,018 122,298 95,000 108,720 20,413 (347 ) 20,066 Balhae Infrastructure Company 847,758 1,870 841,784 845,888 106,624 — 106,624 Aju Good Technology Venture Fund 57,776 2,265 44,500 55,511 21,351 (3 ) 21,348 SY Auto Capital Co., Ltd. 89,462 51,272 20,000 38,190 18,713 (2,569 ) 16,144 Incheon Bridge Co., Ltd. 579,386 700,133 61,096 (120,747 ) (18,100 ) 18,100 — Big Dipper Co., Ltd. 285 306 1,750 (21 ) (5 ) 5 — Paycoms Co., Ltd. 2,690 2,073 855 617 72 126 198 Food Factory Co., Ltd. 7,613 4,767 450 2,846 632 649 1,281 KBSP Private Equity Fund No.4 39,795 — 40,800 39,795 5,950 — 5,950 KB Private Equity Fund No.3 1,132 533 — 599 94 — 94 Korea Credit Bureau Co., Ltd. 117,077 37,599 10,000 79,478 7,153 — 7,153 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 42,585 3,205 38,960 39,380 9,845 — 9,845 Keystone-Hyundai Securities No.1 Private Equity Fund 178,848 132,123 42,837 46,725 1,556 — 1,556 KB Social Impact Investment Fund 9,585 4 10,000 9,581 2,874 — 2,874 KB-Solidus 106,215 1,179 75,600 105,036 45,516 697 46,213 POSCO-KB 41,807 541 33,200 41,266 12,895 — 12,895 KB-TS 34,972 3,490 29,600 31,482 17,630 — 17,630 KB-Brain Scale-up 64,968 313 62,980 64,655 27,513 (750 ) 26,763 KB-SJ 22,327 6 24,300 22,321 4,133 — 4,133 UNION Media Commerce Fund 3,318 7 3,450 3,311 960 — 960 KB-Stonebridge 114,712 496 98,235 114,216 16,636 — 16,636 KB SPROTT Renewable Private Equity Fund No.1 13,896 497 15,376 13,399 5,049 — 5,049 December 31, 2020 * Total assets Total Paid-in Equity Share of net Unrealized gains and others Consolidated amount (In millions of Korean won) KB-UTC 38,585 207 39,319 38,378 16,999 — 16,999 WJ Private Equity Fund No.1 36,197 170 37,100 36,027 9,711 — 9,711 All Together Korea Fund No.2 10,025 1 10,001 10,024 10,023 — 10,023 KB-NAU 47,607 850 47,500 46,757 5,611 — 5,611 JR Global REIT 1,859,214 1,043,068 165,600 816,146 215,854 — 215,854 Project Vanilla Co., Ltd. 4,445 132 5,000 4,313 2,151 — 2,151 December & Company Inc. 68,173 3,305 35,441 64,868 24,402 — 24,402 2020 KB Fintech Renaissance Fund 10,841 5 10,900 10,836 547 — 547 KB Material and Parts No.1 PEF 23,296 — 23,500 23,296 3,371 — 3,371 FineKB Private Equity Fund No.1 — 77 — (77 ) — — — 2020* Operating revenue Net (loss) Other comprehensive income (loss) Total comprehensive income (loss) Dividends (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 1,942 ￦ 1,053 ￦ — ￦ 1,053 ￦ — KB GwS Private Securities Investment Trust 48,501 47,520 — 47,520 9,525 KB-KDBC Pre-IPO 5,151 4,421 — 4,421 — KB Star Office Private Real Estate Master Fund No.1 2,392 1,076 — 1,076 — Balhae Infrastructure Company 63,781 89,757 — 89,757 6,973 Aju Good Technology Venture Fund 8,685 2,815 — 2,815 — SY Auto Capital Co., Ltd. 17,404 2,057 (49 ) 2,008 — Incheon Bridge Co., Ltd. 70,345 (23,200 ) — (23,200 ) — Big Dipper Co., Ltd. 942 (305 ) — (305 ) — Paycoms Co., Ltd. 1,391 505 — 505 — Food Factory Co., Ltd. 9,282 407 — 407 — KBSP Private Equity Fund No.4 2 306 — 306 — KB Private Equity Fund No.3 — 15,442 — 15,442 2,082 Korea Credit Bureau Co., Ltd. 107,810 13,391 — 13,391 89 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 1,629 626 — 626 — Keystone-Hyundai Securities No.1 Private Equity Fund 16,586 (1,536 ) — (1,536 ) — KB Social Impact Investment Fund 8 (301 ) — (301 ) — KB-Solidus 6,435 (12,655 ) — (12,655 ) — POSCO-KB 12,842 10,154 — 10,154 — KB-TS 5,342 4,051 — 4,051 — KB-Brain Scale-up 5,257 3,013 — 3,013 — KB-SJ — (689 ) — (689 ) — UNION Media Commerce Fund — (3 ) — (3 ) — KB-Stonebridge 20,068 17,842 — 17,842 — KB SPROTT Renewable Private Equity Fund No.1 1 (991 ) — (991 ) — KB-UTC — (866 ) — (866 ) — WJ Private Equity Fund No.1 2 (1,073 ) — (1,073 ) — All Together Korea Fund No.2 187 150 — 150 — KB-NAU 2,901 (743 ) — (743 ) — JR Global REIT — — — — — Project Vanilla Co., Ltd. — (611 ) — (611 ) — December & Company Inc. 756 (2,469 ) — (2,469 ) — 2020 KB Fintech Renaissance Fund 1 (64 ) — (64 ) — KB Material and Parts No.1 PEF — (204 ) — (204 ) — FineKB Private Equity Fund No.1 — (77 ) — (77 ) — December 31, 2021* Total assets Total Paid-in Equity Share of net Unrealized gains and others Consolidated amount (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 10,678 ￦ 3 ￦ 4,015 ￦ 10,675 ￦ 1,622 ￦ — ￦ 1,622 KB-KDBC Pre-IPO 18,069 385 13,200 17,684 11,789 — 11,789 KB Star Office Private Real Estate Master Fund No.1 247,259 122,620 95,000 124,639 26,240 — 26,240 Balhae Infrastructure Company 853,961 62,336 840,323 791,625 99,785 — 99,785 Aju Good Technology Venture Fund 64,303 4,703 32,100 59,600 22,921 — 22,921 SY Auto Capital Co., Ltd. 88,144 47,665 20,000 40,479 19,835 (1,613 ) 18,222 Incheon Bridge Co., Ltd. 560,570 690,530 61,096 (129,960 ) (19,481 ) 19,481 — Big Dipper Co., Ltd. 143 748 1,750 (605 ) (147 ) 147 — Paycoms Co., Ltd. 3,597 1,960 855 1,637 181 344 525 Food Factory Co., Ltd. 8,332 5,482 450 2,850 633 687 1,320 KBSP Private Equity Fund No.4 37,646 5 40,800 37,641 5,628 — 5,628 Korea Credit Bureau Co., Ltd. 128,297 78,328 10,000 49,969 4,497 — 4,497 KB Social Impact Investment Fund 14,431 157 15,000 14,274 4,282 — 4,282 KB-Solidus 112,358 1,126 68,400 111,232 48,201 697 48,898 POSCO-KB 17,754 432 8,880 17,322 5,413 — 5,413 KB-TS 35,279 5,228 25,500 30,051 16,828 — 16,828 KB-Brain Scale-up 69,943 221 61,100 69,722 29,669 (750 ) 28,919 KB-SJ 22,947 557 27,000 22,390 4,146 — 4,146 UNION Media Comm e 3,318 10 3,450 3,308 959 — 959 KB-Stonebridge 151,004 316 148,587 150,688 21,948 — 21,948 KB SPROTT Renewable Private Equity Fund No.1 13,886 1,467 15,376 12,419 4,680 — 4,680 KB-UTC 47,848 497 48,260 47,351 20,972 — 20,972 WJ Private Equity Fund No.1 35,799 170 37,100 35,629 9,604 — 9,604 All Together Korea Fund No.2 10,073 1 10,002 10,072 10,070 — 10,070 KB-NAU 127,960 844 111,600 127,116 15,254 — 15,254 Project Vanilla Co., Ltd. 1,283 211 5,000 1,072 525 — 525 December & Company Inc. 71,219 17,276 37,241 53,943 9,054 12,334 21,388 2020 KB Fintech Renaissance Fund 12,252 5 10,900 12,247 618 — 618 KB Material and Parts No.1 PEF 23,104 — 23,500 23,104 3,343 — 3,343 FineKB Private Equity Fund No.1 32,583 315 33,500 32,268 8,067 — 8,067 KB Bio Private Equity No.3 Ltd. 81,691 101 82,000 81,590 9,950 — 9,950 G payment Joint Stock Company 7,797 557 2,950 7,240 3,175 6,175 9,350 Smart Korea KB Future9-Sejong Venture Fund 2,581 81 2,600 2,500 962 — 962 KB-KTB 11,008 101 11,000 10,907 5,503 51 5,554 KB-SOLIDUS 2,040 — 2,040 2,040 1,800 — 1,800 Paramark KB Fund No.1 8,943 3 9,860 8,940 1,850 — 1,850 2021* Operating revenue Net profit (loss) Other comprehensive income (loss) Total comprehensive income (loss) Dividends (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 4,594 ￦ 4,180 ￦ — ￦ 4,180 ￦ — KB-KDBC Pre-IPO 530 120 — 120 — KB Star Office Private Real Estate Master Fund No.1 18 (127 ) — (127 ) 963 Balhae Infrastructure Company 97,833 19,559 — 19,559 9,121 Aju Good Technology Venture Fund 22,486 15,407 — 15,407 — SY Auto Capital Co., Ltd. 14,316 2,193 104 2,297 — Incheon Bridge Co., Ltd. 84,068 (16,219 ) — (16,219 ) — Big Dipper Co., Ltd. 939 (583 ) — (583 ) — Paycoms Co., Ltd. 1,515 857 — 857 — Food Factory Co., Ltd. 8,853 354 — 354 — KBSP Private Equity Fund No.4 (1,358 ) (2,154 ) — (2,154 ) — Korea Credit Bureau Co., Ltd. 128,150 (27,327 ) — (27,327 ) 90 KB Social Impact Investment Fund 7 (306 ) — (306 ) — KB-Solidus 18,782 13,396 — 13,396 — POSCO-KB 1,880 376 — 376 — KB-TS 2,094 (1,151 ) — (1,151 ) — KB-Brain Scale-up 14,244 8,495 — 8,495 — KB-SJ 170 (2,631 ) — (2,631 ) — UNION Media Commerce Fund — (3 ) — (3 ) — KB-Stonebridge 55,572 54,053 — 54,053 9,895 KB SPROTT Renewable Private Equity Fund No.1 — (983 ) — (983 ) — KB-UTC 1,080 32 — 32 — WJ Private Equity Fund No.1 291 (398 ) — (398 ) — All Together Korea Fund No.2 53 47 — 47 — KB-NAU 20,594 16,252 — 16,252 — Project Vanilla Co., Ltd. — (3,231 ) — (3,231 ) — December & Company Inc. 3,982 (20,767 ) — (20,767 ) — 2020 KB Fintech Renaissance Fund 1,566 1,411 — 1,411 — KB Material and Parts No.1 PEF 451 42 — 42 34 FineKB Private Equity Fund No.1 2 (1,155 ) — (1,155 ) — KB Bio Private Equity No.3 Ltd. 4 (410 ) — (410 ) — G payment Joint Stock Company 819 (762 ) — (762 ) — Smart Korea KB Future9-Sejong Venture Fund 2 (100 ) — (100 ) — KB-KTB 8 (93 ) — (93 ) — KB-SOLIDUS — — — — — Paramark KB Fund No.1 — (920 ) — (920 ) — * The condensed financial information of the associates and joint ventures is adjusted to reflect adjustments, such as fair value adjustments recognized at the time of acquisition and adjustments for differences in accounting policies.
Schedule Of Changes Investments In Associates	13.3 Changes in carrying amount of investments in associates and joint ventures for the years ended December 31, 2020 and 2021, are as follows: 2020 1 Beginning Acquisition and others Disposal and others Dividends Gains (losses) on method accounting Other hensive income (loss) Ending (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 1,705 ￦ — ￦ (586 ) ￦ — ￦ 160 ￦ — ￦ 1,279 KB GwS Private Securities Investment Trust 136,168 — — (9,525 ) 14,716 — 141,359 KB-KDBC Pre-IPO 18,988 — (6,399 ) — 3,453 — 16,042 KB Star Office Private Real Estate Master Fund No.1 19,839 — — — 227 — 20,066 PT Bank KB Bukopin Tbk 2 121,381 43,909 (54,069 ) — (107,258 ) (3,963 ) — Balhae Infrastructure Company 101,391 893 — (6,973 ) 11,313 — 106,624 Aju Good Technology Venture Fund 23,016 — (2,885 ) — 1,217 — 21,348 SY Auto Capital Co., Ltd. 12,725 — — — 3,422 (3 ) 16,144 Incheon Bridge Co., Ltd. — — — — — — — Big Dipper Co., Ltd. 125 — — — (125 ) — — Paycoms Co., Ltd. 45 — — — 153 — 198 Food Factory Co., Ltd. 1,000 — — — 247 34 1,281 KBSP Private Equity Fund No.4 5,904 — — — 46 — 5,950 KB Private Equity Fund No.3 7,754 — (8,000 ) (2,082 ) 2,422 — 94 Korea Credit Bureau Co., Ltd. 5,991 — — (89 ) 1,251 — 7,153 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 13,616 — (3,231 ) — (540 ) — 9,845 Keystone-Hyundai Securities No.1 Private Equity Fund 1,625 — — — (69 ) — 1,556 KB Social Impact Investment Fund 1,465 1,500 — — (91 ) — 2,874 KB-Solidus 45,718 10,920 (4,940 ) — (5,485 ) — 46,213 POSCO-KB 6,847 5,000 (2,125 ) — 3,173 — 12,895 KB-TS 19,731 2,240 (5,488 ) — 1,232 (85 ) 17,630 KB-Brain Scale-up 19,752 8,000 (3,200 ) — 2,211 — 26,763 KB-SJ 2,761 1,500 — — (128 ) — 4,133 UNION Media Commerce Fund 961 — — — (1 ) — 960 KB-Stonebridge 4,944 9,093 — — 2,599 — 16,636 KB SPROTT Renewable Private Equity Fund No.1 1,295 4,128 — — (374 ) — 5,049 KB-UTC 417 16,966 — — (384 ) — 16,999 WJ Private Equity Fund No.1 — 10,000 — — (289 ) — 9,711 All Together Korea Fund No.2 — 100,000 (90,000 ) — 150 (127 ) 10,023 KB-NAU — 5,700 — — (89 ) — 5,611 JR Global REIT — 219,493 (3,639 ) — — — 215,854 Project Vanilla Co., Ltd. — 2,450 — — (299 ) — 2,151 December & Company Inc. — 30,000 (5,151 ) — (447 ) — 24,402 2020 KB Fintech Renaissance Fund — 550 — — (3 ) — 547 KB Material and Parts No.1 PEF — 3,400 — — (29 ) — 3,371 FineKB Private Equity Fund No.1 — — — — — — — Others 23,076 40,000 (61,862 ) — (899 ) 359 674 ￦ 598,240 ￦ 515,742 ￦ (251,575 ) ￦ (18,669 ) ￦ (68,518 ) ￦ (3,785 ) ￦ 771,435 2021 1 Beginning Acquisition Disposal Dividends Gains Other hensive income Ending (In millions of Korean won) KB Pre IPO Secondary Venture Fund No.1 ￦ 1,279 ￦ — ￦ (292 ) ￦ — ￦ 635 ￦ — ￦ 1,622 KB GwS Private Securities Investment Trust 141,359 — (141,359 ) — — — — KB-KDBC Pre-IPO 16,042 — (4,800 ) — 547 — 11,789 KB Star Office Private Real Estate Master Fund No.1 20,066 — — (963 ) 7,137 — 26,240 Balhae Infrastructure Company 106,624 280 (463 ) (9,121 ) 2,465 — 99,785 Aju Good Technology Venture Fund 21,348 — (4,770 ) — 6,343 — 22,921 SY Auto Capital Co., Ltd. 16,144 — — — 2,027 51 18,222 Incheon Bridge Co., Ltd. — — — — — — — Big Dipper Co., Ltd. — — — — — — — Paycoms Co., Ltd. 198 — — — 327 — 525 Food Factory Co., Ltd. 1,281 — — — 7 32 1,320 KBSP Private Equity Fund No.4 5,950 — — — (322 ) — 5,628 KB Private Equity Fund No.3 94 — (13 ) (81 ) — — — Korea Credit Bureau Co., Ltd. 7,153 — — (90 ) (2,566 ) — 4,497 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 9,845 — (9,725 ) (2,120 ) 2,000 — — Keystone-Hyundai Securities No.1 Private Equity Fund 1,556 — (1,044 ) (512 ) — — — KB Social Impact Investment Fund 2,874 1,500 — — (92 ) — 4,282 KB-Solidus 46,213 — (3,120 ) — 5,805 — 48,898 POSCO-KB 12,895 — (7,599 ) — 117 — 5,413 KB-TS 17,630 3,080 (5,376 ) — 1,494 — 16,828 KB-Brain Scale-up 26,763 10,000 (10,800 ) — 2,956 — 28,919 KB-SJ 4,133 499 — — (486 ) — 4,146 UNION Media Commerce Fund 960 — — — (1 ) — 959 KB-Stonebridge 16,636 13,257 (5,924 ) (9,895 ) 7,874 — 21,948 KB SPROTT Renewable Private Equity Fund No.1 5,049 — — — (369 ) — 4,680 KB-UTC 16,999 5,085 (1,126 ) — 14 — 20,972 WJ Private Equity Fund No.1 9,711 — — — (107 ) — 9,604 All Together Korea Fund No.2 10,023 — — — 47 — 10,070 KB-NAU 5,611 7,692 — — 1,951 — 15,254 JR Global REIT 215,854 — (209,250 ) (6,604 ) — — — Project Vanilla Co., Ltd. 2,151 — — — (1,626 ) — 525 December & Company Inc. 24,402 481 — — (3,507 ) 12 21,388 2020 KB Fintech Renaissance Fund 547 — — — 71 — 618 KB Material and Parts No.1 PEF 3,371 — — (34 ) 6 — 3,343 FineKB Private Equity Fund No.1 — 8,375 — — (308 ) — 8,067 KB Bio Private Equity No.3 Ltd. — 10,000 — — (50 ) — 9,950 K The 15th REIT Co., Ltd. — 8,600 (8,600 ) — — — — G payment Joint Stock Company — 9,684 — — (334 ) — 9,350 498 Seventh Owners LLC 3 — 172,907 (169,424 ) (3,483 ) — — — Smart Korea KB Future9-Sejong Venture Fund — 1,000 — — (38 ) — 962 KB-KTB — 5,601 — — (47 ) — 5,554 KB-SOLIDUS — 1,800 — — — — 1,800 Paramark KB Fund No.1 — 2,040 — — (190 ) — 1,850 Others 674 — — — (303 ) 418 789 ￦ 771,435 ￦ 261,881 ￦ (583,685 ) ￦ (32,903 ) ￦ 31,477 ￦ 513 ￦ 448,718 1 Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million for the years ended December 31, 2020 and 2021, respectively. 2 The investment was reclassified from associates to subsidiaries during the year ended December 31, 2020 due to additional share purchase. 3 The investment was classified as assets of a disposal group held for sale as of December 31, 2021.
Schedule Of Accumulated Unrecognized Share Of Losses Investment In Associates	13.4 Unrecognized share of losses of investments in associates and joint ventures due to the discontinuation of recognizing share of losses, for the years ended December 31, 2020 and 2021, and accumulated amount of unrecognized losses as of December 31, 2020 and 2021, are as follows: Unrecognized losses for the period Accumulated unrecognized losses 2020 2021 December 31, 2020 December 31, 2021 (In millions of Korean won) DSMETAL Co., Ltd. ￦ — ￦ 38 ￦ 65 ￦ 103 Incheon Bridge Co., Ltd. 3,354 1,381 18,100 19,481 Jungdong Steel Co., Ltd. — — 489 489 DPAPS Co., Ltd. 19 — 358 — Shinla Construction Co., Ltd. — — 183 183 Jaeyang Industry Co., Ltd. — — 30 30 Terra Corporation — — 14 14 Jungdo Co., Ltd. 151 239 312 551 Jinseung Tech Co., Ltd. — 12 21 33 Korea NM Tech Co., Ltd. — — 28 28 Chongil Machine & Tools Co., Ltd. — 49 19 68 Skydigital Inc. — 68 106 174 Imt Technology Co., Ltd. 3 (3 ) 3 — Jo Yang Industrial Co., Ltd. 96 9 96 105 IDTECK Co., Ltd. 216 (72 ) 216 144 MJT&I Corp. — 152 — 152 Dae-A — 202 — 202 Il-Kwang — 160 — 160 Inter Shipping Co., Ltd. — 117 — 117 ￦ 3,839 ￦ 2,352 ￦ 20,040 ￦ 22,034

Property and Equipment and Inve

Property and Equipment and Investment Properties (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure Of Property Plant And Equipment And Investment Property [Abstract]
Disclosure Of Detailed Information About Property Plant And Equipment Explanatory	Details of property and equipment as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 2,611,604 ￦ — ￦ (1,018 ) ￦ 2,610,586 Buildings 2,607,957 (830,516 ) (5,859 ) 1,771,582 Leasehold improvements 929,120 (833,293 ) — 95,827 Equipment and vehicles 2,040,100 (1,699,442 ) — 340,658 Construction in-progress 44,190 — — 44,190 Right-of-use 1,094,876 (524,165 ) — 570,711 ￦ 9,327,847 ￦ (3,887,416 ) ￦ (6,877 ) ￦ 5,433,554 December 31, 2021 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 2,548,185 ￦ — ￦ (4 ) ￦ 2,548,181 Buildings 2,534,134 (851,730 ) (5,747 ) 1,676,657 Leasehold improvements 977,853 (889,602 ) — 88,251 Equipment and vehicles 2,093,461 (1,782,278 ) — 311,183 Construction in-progress 39,579 — — 39,579 Right-of-use 1,301,864 (725,817 ) — 576,047 ￦ 9,495,076 ￦ (4,249,427 ) ￦ (5,751 ) ￦ 5,239,898 2020 Beginning Acquisition Transfer 1 Disposal Depreciation 2 Business combination Others Ending (In millions of Korean won) Land ￦ 2,430,794 ￦ 6,475 ￦ (116,264 ) ￦ (2,578 ) ￦ — ￦ 295,421 ￦ (3,262 ) ￦ 2,610,586 Buildings 1,502,923 43,592 190,917 (4,442 ) (61,339 ) 100,984 (1,053 ) 1,771,582 Leasehold improvements 116,124 13,348 34,596 (574 ) (73,394 ) 5,087 640 95,827 Equipment and vehicles 380,353 161,515 3,705 (1,990 ) (221,697 ) 19,873 (1,101 ) 340,658 Construction in-progress 86,303 229,927 (291,336 ) — — 20,022 (726 ) 44,190 Right-of-use 550,880 426,405 53 (203,376 ) (272,686 ) 55,656 13,779 570,711 ￦ 5,067,377 ￦ 881,262 ￦ (178,329 ) ￦ (212,960 ) ￦ (629,116 ) ￦ 497,043 ￦ 8,277 ￦ 5,433,554 2021 Beginning Acquisition Transfer 1 Disposal Depreciation 2 Business combination Others Ending (In millions of Korean won) Land ￦ 2,610,586 ￦ 1,106 ￦ (81,690 ) ￦ (11,399 ) ￦ — ￦ — ￦ 29,578 ￦ 2,548,181 Buildings 1,771,582 2,412 (79,802 ) 6,213 (69,118 ) — 45,370 1,676,657 Leasehold improvements 95,827 13,079 40,148 (891 ) (61,294 ) — 1,382 88,251 Equipment and vehicles 340,658 153,459 2,488 (1,819 ) (187,918 ) 537 3,778 311,183 Construction in-progress 44,190 129,682 (99,763 ) (8,435 ) — — (26,095 ) 39,579 Right-of-use 570,711 614,069 (9 ) (324,104 ) (288,980 ) 20 4,340 576,047 ￦ 5,433,554 ￦ 913,807 ￦ (218,628 ) ￦ (340,435 ) ￦ (607,310 ) ￦ 557 ￦ 58,353 ￦ 5,239,898 1 Includes transfers with investment properties and assets held for sale. 2 Includes depreciation expenses amounting to ￦ 123 million and ￦ 196 million recorded as other operating expenses and others for the years ended December 31, 2020 and 2021, respectively. 2020 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of property and equipment ￦ (6,877 ) ￦ (12 ) ￦ — ￦ 12 ￦ (6,877 ) Accumulated impairment losses of right-of-use (1,178 ) — — 1,178 — ￦ (8,055 ) ￦ (12 ) ￦ — ￦ 1,190 ￦ (6,877 ) 2021 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of property and equipment ￦ (6,877 ) ￦ — ￦ — ￦ 1,126 ￦ (5,751 )
Disclosure Of Detailed Information About Investment Property Explanatory	Details of investment properties as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 1,568,508 ￦ — ￦ (410 ) ￦ 1,568,098 Buildings 1,092,737 (122,833 ) (4,463 ) 965,441 ￦ 2,661,245 ￦ (122,833 ) ￦ (4,873 ) ￦ 2,533,539 December 31, 2021 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Land ￦ 1,577,800 ￦ — ￦ (447 ) ￦ 1,577,353 Buildings 1,089,761 (147,307 ) (4,863 ) 937,591 ￦ 2,667,561 ￦ (147,307 ) ￦ (5,310 ) ￦ 2,514,944 2020 Beginning Acquisition Transfer* Disposal Depreciation Business combination Others Ending (In millions of Korean won) Land ￦ 1,537,240 ￦ 34,529 ￦ 61,383 ￦ (167,015 ) ￦ — ￦ 106,944 ￦ (4,983 ) ￦ 1,568,098 Buildings 1,290,748 18,667 37,694 (378,332 ) (38,717 ) 42,169 (6,788 ) 965,441 ￦ 2,827,988 ￦ 53,196 ￦ 99,077 ￦ (545,347 ) ￦ (38,717 ) ￦ 149,113 ￦ (11,771 ) ￦ 2,533,539 2021 Beginning Acquisition Transfer* Disposal Depreciation Others Ending (In millions of Korean won) Land ￦ 1,568,098 ￦ 28,568 ￦ 22,410 ￦ (63,546 ) ￦ — ￦ 21,823 ￦ 1,577,353 Buildings 965,441 90,393 1,802 (112,159 ) (28,933 ) 21,047 937,591 ￦ 2,533,539 ￦ 118,961 ￦ 24,212 ￦ (175,705 ) ￦ (28,933 ) ￦ 42,870 ￦ 2,514,944 * Includes transfers with property and equipment and assets held for sale.
Schedule Of Fair Value Of Investment Property	Valuation techniques and inputs used to measure the fair value of investment properties as of December 31, 2021, are as follows: December 31, 2021 Fair value Valuation techniques Inputs (In millions of Land and buildings ￦ 124,021 Cost approach method -  Price per square meter -  Replacement cost 1,118,793 Market comparison method -  Price per square meter 1,236,638 Discounted cash flow -  Prospective rental market growth rate -  Period of vacancy -  Rental ratio -  Discount rate and others 232,950 Income approach method -  Discount rate -  Capitalization rate -  Vacancy rate Fair value of investment properties amounts to ￦ 2,712,653 million and ￦ 2,712,402 million as of December 31, 2020 and 2021, respectively. Investment properties are measured by qualified independent appraisers with recent experience in valuing similar properties in the same area. In addition, all investment properties are classified as Level 3 in accordance with fair value hierarchy in Note 6.1.2. Rental income from above investment properties amounts to ￦ 157,652 million and ￦ 123,313 million for the years ended December 31, 2020 and 2021, respectively.

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about intangible assets [abstract]
Disclosure of intangible assets and goodwill [text block]	15.1 Details of intangible assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Others Carrying amount (In millions of Korean won) Goodwill ￦ 887,259 ￦ — ￦ (70,517 ) ￦ (53,160 ) ￦ 763,582 Other intangible assets 4,928,003 (2,304,188 ) (36,264 ) — 2,587,551 ￦ 5,815,262 ￦ (2,304,188 ) ￦ (106,781 ) ￦ (53,160 ) ￦ 3,351,133 December 31, 2021 Acquisition cost Accumulated Accumulated Others Carrying amount (In millions of Korean won) Goodwill ￦ 887,259 ￦ — ￦ (70,517 ) ￦ (10,335 ) ￦ 806,407 Other intangible assets 5,227,231 (2,732,394 ) (34,887 ) — 2,459,950 ￦ 6,114,490 ￦ (2,732,394 ) ￦ (105,404 ) ￦ (10,335 ) ￦ 3,266,357 15.3 Changes in accumulated impairment losses of goodwill for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Impairment Others Ending (In millions of Korean won) Accumulated impairment losses of goodwill ￦ (70,517 ) ￦ — ￦ — ￦ (70,517 ) 2021 Beginning Impairment Others Ending (In millions of Korean won) Accumulated impairment losses of goodwill ￦ (70,517 ) ￦ — ￦ — ￦ (70,517 ) 15.5 Details of intangible assets other than goodwill as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Industrial property rights ￦ 6,222 ￦ (2,936 ) ￦ (940 ) ￦ 2,346 Software 1,800,686 (1,225,173 ) (2,326 ) 573,187 Other intangible assets 690,665 (285,893 ) (32,998 ) 371,774 VOBA 2,395,291 (759,672 ) — 1,635,619 Right-of-use 35,139 (30,514 ) — 4,625 ￦ 4,928,003 ￦ (2,304,188 ) ￦ (36,264 ) ￦ 2,587,551 December 31, 2021 Acquisition cost Accumulated Accumulated Carrying (In millions of Korean won) Industrial property rights ￦ 3,056 ￦ (1,953 ) ￦ — ￦ 1,103 Software 1,996,646 (1,417,705 ) — 578,941 Other intangible assets 797,107 (365,473 ) (34,887 ) 396,747 VOBA 2,395,291 (915,746 ) — 1,479,545 Right-of-use 35,131 (31,517 ) — 3,614 ￦ 5,227,231 ￦ (2,732,394 ) ￦ (34,887 ) ￦ 2,459,950 15.6 Changes in intangible assets other than goodwill for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Acquisition & Disposal Amortization 1 Business combination Others Ending (In millions of Korean won) Industrial property rights ￦ 2,853 ￦ 116 ￦ (147 ) ￦ (476 ) ￦ — ￦ — ￦ 2,346 Software 373,519 340,045 (4,444 ) (153,876 ) 18,252 (309 ) 573,187 Other intangible assets 2 266,517 63,743 (9,527 ) (47,948 ) 106,445 (7,456 ) 371,774 VOBA 1,809,485 — — (173,866 ) — — 1,635,619 Right-of-use 9,698 — — (5,026 ) — (47 ) 4,625 ￦ 2,462,072 ￦ 403,904 ￦ (14,118 ) ￦ (381,192 ) ￦ 124,697 ￦ (7,812 ) ￦ 2,587,551 2021 Beginning Acquisition & Disposal Amortization 1 Business combination Others Ending (In millions of Korean won) Industrial property rights ￦ 2,346 ￦ 207 ￦ (1,080 ) ￦ (370 ) ￦ — ￦ — ￦ 1,103 Software 573,187 219,128 (838 ) (216,073 ) 8,742 (5,205 ) 578,941 Other intangible assets 2 371,774 100,460 (16,907 ) (59,761 ) — 1,181 396,747 VOBA 1,635,619 — — (156,074 ) — — 1,479,545 Right-of-use 4,625 — — (1,012 ) — 1 3,614 ￦ 2,587,551 ￦ 319,795 ￦ (18,825 ) ￦ (433,290 ) ￦ 8,742 ￦ (4,023 ) ￦ 2,459,950 1 Includes ￦ 173,992 million and ￦ 189,791 million recorded as insurance expenses and other operating expenses for the years ended December 31, 2020 and 2021, respectively. 2 Impairment losses for membership right with indefinite useful life among other intangible assets are recognized when its recoverable amount is lower than its carrying amount, and reversal of impairment losses are recognized when its recoverable amount is higher than its carrying amount. 15.7 Changes in accumulated impairment losses of other intangible assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of other intangible assets ￦ (31,652 ) ￦ (9,312 ) ￦ 3,669 ￦ 1,031 ￦ (36,264 ) 2021 Beginning Impairment Reversal Disposal and Ending (In millions of Korean won) Accumulated impairment losses of other intangible assets ￦ (36,264 ) ￦ (5,306 ) ￦ 2,939 ￦ 3,744 ￦ (34,887 )
Disclosure of goodwill [text block]	15.2 Details of goodwill as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Acquisition cost Carrying Acquisition cost Carrying (In millions of Korean won) Housing & Commercial Bank ￦ 65,288 ￦ 65,288 ￦ 65,288 ￦ 65,288 Kookmin Bank Cambodia Plc. 1,202 — 1,202 — KB Securities Co., Ltd. 70,265 58,889 70,265 58,889 KB Capital Co., Ltd. 79,609 79,609 79,609 79,609 KB Savings Bank Co., Ltd. 115,343 57,404 115,343 57,404 KB Securities Vietnam Joint Stock Company 13,092 12,234 13,092 13,533 KB Daehan Specialized Bank Plc. 1,515 1,470 1,515 1,601 PRASAC Microfinance Institution Plc. 396,942 356,570 396,942 388,524 PT Sunindo Kookmin Best Finance 2,963 2,963 2,963 2,894 PT Bank KB Bukopin Tbk 89,220 80,002 89,220 85,893 PT. KB Finansia Multi Finance 51,820 49,153 51,820 52,772 ￦ 887,259 ￦ 763,582 ￦ 887,259 ￦ 806,407 * Includes the effect of exchange differences and others.
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [text block]	15.4 Details of goodwill allocation to cash-generating units and related information for impairment testing as of December 31, 2021 are as follows: December 31, 2021 Carrying Recoverable amount Discount rate Permanent (In millions of Korean won) Housing & Commercial Bank Retail banking ￦ 49,315 ￦ 5,767,992 18.57 1.00 Corporate banking 15,973 2,004,756 18.96 1.00 KB Securities Co., Ltd. 58,889 1,369,331 21.27 1.00 KB Capital Co., Ltd. 79,609 204,215 24.01 1.00 KB Savings Bank Co., Ltd. and Yehansoul Savings Bank Co., Ltd. 57,404 542,790 14.37 1.00 KB Securities Vietnam Joint Stock Company 13,533 35,525 22.09 1.00 KB Daehan Specialized Bank Plc. 1,601 20,186 23.23 1.00 PT Bank KB Bukopin Tbk 85,893 175,872 17.30 3.00 PRASAC Microfinance Institution Plc. 388,524 247,992 23.02 3.00 PT Sunindo Kookmin Best Finance 2,894 574 18.96 0.00 PT. KB Finansia Multi Finance 52,772 49,744 17.57 1.00 ￦ 806,407 ￦ 10,418,977

Lease (Tables)

Lease (Tables)	12 Months Ended
	Dec. 31, 2021
Presentation of leases for lessee [abstract]
The Amounts Recognized In The Consolidated Statement Of Financial Position	Amounts recognized in the consolidated statements of financial position related to lease as of December 31, 2020 and 2021, are as follows: December 31, December 31, (In millions of Korean won) Right-of-use Real estate ￦ 537,392 ￦ 544,075 Vehicles 16,218 18,416 Others 17,101 13,556 570,711 576,047 Right-of-use 4,626 3,614 ￦ 575,337 ￦ 579,661 Lease liabilities* ￦ 559,113 ￦ 578,808 * Included in property and equipment, intangible assets, and other liabilities. 2020 2021 (In millions of Korean won) Depreciation and amortization of right-of-use Real estate ￦ 246,058 ￦ 262,240 Vehicles 15,286 17,796 Others 11,342 8,944 Intangible assets 5,026 1,012 ￦ 277,712 ￦ 289,992 Interest expenses on the lease liabilities ￦ 13,492 ￦ 14,678 Expense relating to short-term lease 6,169 5,920 Expense relating to lease of low-value 7,130 8,434 Expense relating to variable lease payments not included in lease liabilities (included in administrative expenses) 438 262 Total cash outflows for lease for the years ended December 31, 2020 and 2021 are ￦ 245,151 million and ￦ 267,864 million, respectively.
Details Of The Finance Lease As A Finance Lessee	The Group as a finance lessorGross investment in the lease and present value of minimum lease payments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Gross Present Gross Present (In millions of Korean won) Up to 1 year ￦ 579,968 ￦ 354,588 ￦ 559,569 ￦ 379,439 1-5 958,125 551,777 808,256 540,219 ￦ 1,538,093 ￦ 906,365 ￦ 1,367,825 ￦ 919,658 December 31, 2020 December 31, 2021 (In millions of Korean won) Gross investment in the lease ￦ 1,538,093 ￦ 1,367,825 Net investment in the lease: Present value of minimum lease payments 906,365 919,658 Present value of unguaranteed residual value 496,969 349,478 1,403,334 1,269,136 Unearned finance income ￦ 134,759 ￦ 98,689 Future minimum lease payments to be received from the non-cancellable December 31, 2020 December 31, 2021 (In millions of Korean won) Minimum lease payments to be received: Up to 1 year ￦ 792,935 ￦ 918,640 1-5 1,727,498 1,797,551 Over 5 years 84,733 299,984 ￦ 2,605,166 ￦ 3,016,175

Deferred Income Tax Assets an_2

Deferred Income Tax Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Net deferred tax assets and liabilities [abstract]
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits Explanatory	17.1 Details of deferred income tax assets and liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 Assets Liabilities Net amount (In millions of Korean won) Other provisions ￦ 149,259 ￦ — ￦ 149,259 Allowances for credit losses 26,496 (3,356 ) 23,140 Impairment losses of property and equipment 3,992 (1,889 ) 2,103 Share-based payments 17,718 — 17,718 Provisions for acceptances and guarantees 17,046 — 17,046 Gains or losses on valuation of derivatives 20,645 (223,482 ) (202,837 ) Present value discount 17,058 (3,041 ) 14,017 Gains or losses on fair value hedge 21,060 — 21,060 Accrued interest — (125,835 ) (125,835 ) Deferred loan origination fees and costs 7,224 (226,821 ) (219,597 ) Advanced depreciation provision — (1,703 ) (1,703 ) Gains or losses on revaluation 338 (319,698 ) (319,360 ) Investments in subsidiaries and others 38,164 (111,589 ) (73,425 ) Gains or losses on valuation of security investment 73,857 (1,232,689 ) (1,158,832 ) Defined benefit liabilities 590,633 — 590,633 Accrued expenses 334,900 — 334,900 Retirement insurance expense — (541,317 ) (541,317 ) Adjustments to the prepaid contributions — (28,261 ) (28,261 ) Derivative-linked securities 78,202 (30,881 ) 47,321 Others 1,081,691 (740,462 ) 341,229 2,478,283 (3,591,024 ) (1,112,741 ) Offsetting of deferred income tax assets and liabilities (2,413,225 ) 2,413,225 — ￦ 65,058 ￦ (1,177,799 ) ￦ (1,112,741 ) December 31, 2021 Assets Liabilities Net amount (In millions of Korean won) Other provisions ￦ 178,027 ￦ — ￦ 178,027 Allowances for credit losses 28,770 (3,008 ) 25,762 Impairment losses of property and equipment 9,198 (1,833 ) 7,365 Share-based payments 24,249 — 24,249 Provisions for acceptances and guarantees 33,091 — 33,091 Gains or losses on valuation of derivatives 41,289 (139,281 ) (97,992 ) Present value discount 14,254 (5,929 ) 8,325 Gains or losses on fair value hedge — (14,642 ) (14,642 ) Accrued interest — (140,852 ) (140,852 ) Deferred loan origination fees and costs 10,473 (223,170 ) (212,697 ) Advanced depreciation provision — (1,703 ) (1,703 ) Gains or losses on revaluation — (318,539 ) (318,539 ) Investments in subsidiaries and others 42,547 (159,411 ) (116,864 ) Gains or losses on valuation of security investment 104,168 (1,192,004 ) (1,087,836 ) Defined benefit liabilities 608,471 — 608,471 Accrued expenses 281,983 — 281,983 Retirement insurance expense — (573,895 ) (573,895 ) Adjustments to the prepaid contributions — (29,273 ) (29,273 ) Derivative-linked securities 2,241 (46,895 ) (44,654 ) Others* 1,031,411 (871,625 ) 159,786 2,410,172 (3,722,060 ) (1,311,888 ) Offsetting of deferred income tax assets and liabilities (2,251,079 ) 2,251,079 — ￦ 159,093 ￦ (1,470,981 ) ￦ (1,311,888 ) * Includes Purchase Price Allocation (“PPA”) amount arising from the acquisition of Prudential Life Insurance Company of Korea Ltd., KB Insurance Co., Ltd., and others. 17.2 Unrecognized Deferred Income Tax Assets 17.2.1 No deferred income tax assets have been recognized for the deductible temporary differences of ￦ 372,410 million associated with investments in subsidiaries and others as of December 31, 2021, because it is not probable that these temporary differences will reverse in the foreseeable future. 17.2.2 No deferred income tax assets have been recognized for the deductible temporary differences of ￦ 107,067 million associated with others as of December 31, 2021, due to the uncertainty that these temporary differences will be realized in the future. 17.3 Unrecognized Deferred Income Tax Liabilities 17.3.1 No deferred income tax liabilities have been recognized for the taxable temporary differences of ￦ 404,147 million associated with investments in subsidiaries and others as of December 31, 2021, due to the following reasons: • The Group is able to control the timing of the reversal of the temporary differences. • It is probable that these temporary differences will not reverse in the foreseeable future. 17.3.2 No deferred income tax liabilities have been recognized as of December 31, 2021, for the taxable temporary differences of ￦ 65,288 million related to the initial recognition of goodwill arising from the merger of Housing and Commercial Bank in 2001. 17.4 Changes in cumulative temporary differences for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Business combination Decrease Increase Ending (In millions of Korean won) Deductible temporary differences Gains or losses on fair value hedge ￦ 44,085 ￦ — ￦ 44,085 ￦ 76,583 ￦ 76,583 Other provisions 424,383 6,383 426,457 540,396 544,705 Allowances for credit losses 2,018 105,505 96,885 83,111 93,749 Impairment losses of property and equipment 15,985 — 9,658 8,189 14,516 Deferred loan origination fees and costs 1,930 35,863 15,098 3,574 26,269 Share-based payments 63,092 5 55,601 54,589 62,085 Provisions for acceptances and guarantees 76,214 — 76,214 61,984 61,984 Gains or losses on valuation of derivatives 186,035 5,201 191,236 76,238 76,238 Present value discount 29,978 — 29,732 61,783 62,029 Investments in subsidiaries and others 185,380 — 47,034 232,655 371,001 Gains or losses on valuation of security investment 136,236 — 136,070 251,524 251,690 Defined benefit liabilities 2,118,942 94,105 227,010 313,122 2,299,159 Accrued expenses 911,599 75,498 911,599 1,144,785 1,220,283 Derivative-linked securities 477,307 — 477,307 284,370 284,370 Others* 1,669,025 2,068,207 1,170,462 1,081,994 3,648,764 6,342,209 2,390,767 3,914,448 4,274,897 9,093,425 Unrecognized deferred income tax assets Other provisions 4,788 3,054 Investments in subsidiaries and others 67,645 242,875 Others 125,158 75,831 6,144,618 8,771,665 Tax rate (%) 27.5 27.5 Total deferred income tax assets ￦ 1,703,764 ￦ 2,478,283 Taxable temporary differences Accrued interest ￦ (401,337 ) ￦ (168,859 ) ￦ (394,255 ) ￦ (281,685 ) ￦ (457,626 ) Allowances for credit losses (11,877 ) — (11,877 ) (12,203 ) (12,203 ) Impairment losses of property and equipment (4,163 ) — (111 ) 117 (3,935 ) Deferred loan origination fees and costs (752,178 ) — (752,178 ) (820,223 ) (820,223 ) Advanced depreciation provision (6,192 ) — — — (6,192 ) Gains or losses on valuation of derivatives (576,743 ) — (576,743 ) (812,662 ) (812,662 ) Present value discount (15,278 ) — (15,278 ) (10,916 ) (10,916 ) Goodwill arising from the merger (65,288 ) — — — (65,288 ) Gains or losses on revaluation (1,197,566 ) — (80,036 ) (45,008 ) (1,162,538 ) Investments in subsidiaries and others (419,055 ) — (70,188 ) (297,809 ) (646,676 ) Gains or losses on valuation of security investment (906,790 ) (3,060,750 ) (899,660 ) (1,358,042 ) (4,425,922 ) Retirement insurance expense (1,775,740 ) (61,789 ) (162,764 ) (288,296 ) (1,963,061 ) Adjustments to the prepaid contributions (83,262 ) — (83,262 ) (102,768 ) (102,768 ) Derivative-linked securities (125,947 ) — (125,947 ) (112,293 ) (112,293 ) Others* (2,793,848 ) (1,613 ) (1,644,815 ) (1,555,740 ) (2,706,386 ) (9,135,264 ) (3,293,011 ) (4,817,114 ) (5,697,528 ) (13,308,689 ) Unrecognized deferred income tax liabilities Goodwill arising from the merger (65,288 ) (65,288 ) Investments in subsidiaries and others (68,836 ) (260,739 ) Others (1,247 ) (1,042 ) (8,999,893 ) (12,981,620 ) Tax rate (%) 27.5 27.5 Total deferred income tax liabilities ￦ (2,489,587 ) ￦ (3,591,024 ) 2021 Beginning Decrease Increase Ending (In millions of Korean won) Deductible temporary differences Gains or losses on fair value hedge ￦ 76,583 ￦ 76,583 ￦ — ￦ — Other provisions 544,705 527,058 631,800 649,447 Allowances for credit losses 93,749 69,023 75,452 100,178 Impairment losses of property and equipment 14,516 4,361 23,290 33,445 Deferred loan origination fees and costs 26,269 13,719 25,536 38,086 Share-based payments 62,085 55,002 78,225 85,308 Provisions for acceptances and guarantees 61,984 61,984 120,332 120,332 Gains or losses on valuation of derivatives 76,238 76,238 149,817 149,817 Present value discount 62,029 61,783 51,586 51,832 Investments in subsidiaries and others 371,001 203,470 346,809 514,340 Gains or losses on valuation of security investment 251,690 252,497 368,886 368,079 Defined benefit liabilities 2,299,159 315,719 393,189 2,376,629 Accrued expenses 1,220,283 1,220,283 1,026,651 1,026,651 Derivative-linked securities 284,370 284,370 8,147 8,147 Others* 3,648,764 554,628 100,539 3,194,675 9,093,425 3,776,718 3,400,259 8,716,966 Unrecognized deferred income tax assets Other provisions 3,054 404 Investments in subsidiaries and others 242,875 372,410 Others 75,831 107,067 8,771,665 8,237,085 Tax rate (%) 27.5 27.5 Total deferred income tax assets ￦ 2,478,283 ￦ 2,410,172 Taxable temporary differences Gains or losses on fair value hedge ￦ — ￦ — ￦ (53,243 ) ￦ (53,243 ) Accrued interest (457,626 ) (442,101 ) (496,663 ) (512,188 ) Allowances for credit losses (12,203 ) (12,203 ) (10,939 ) (10,939 ) Impairment losses of property and equipment (3,935 ) (204 ) — (3,731 ) Deferred loan origination fees and costs (820,223 ) (820,223 ) (802,237 ) (802,237 ) Advanced depreciation provision (6,192 ) — — (6,192 ) Gains or losses on valuation of derivatives (812,662 ) (804,383 ) (498,197 ) (506,476 ) Present value discount (10,916 ) (10,916 ) (21,469 ) (21,469 ) Goodwill arising from the merger (65,288 ) — — (65,288 ) Gains or losses on revaluation (1,162,538 ) (48,981 ) (44,765 ) (1,158,322 ) Investments in subsidiaries and others (646,676 ) (150,480 ) (468,334 ) (964,530 ) Gains or losses on valuation of security investment (4,425,922 ) (2,552,447 ) (2,394,100 ) (4,267,575 ) Retirement insurance expense (1,963,061 ) (228,784 ) (346,368 ) (2,080,645 ) Adjustments to the prepaid contributions (102,768 ) (102,768 ) (106,446 ) (106,446 ) Derivative-linked securities (112,293 ) (112,293 ) (170,526 ) (170,526 ) Others* (2,706,386 ) (1,819,652 ) (2,208,579 ) (3,095,313 ) (13,308,689 ) (7,105,435 ) (7,621,866 ) (13,825,120 ) Unrecognized deferred income tax liabilities Goodwill arising from the merger (65,288 ) (65,288 ) Investments in subsidiaries and others (260,739 ) (404,147 ) Others (1,042 ) (446 ) (12,981,620 ) (13,355,239 ) Tax rate (%) 27.5 27.5 Total deferred income tax liabilities ￦ (3,591,024 ) ￦ (3,722,060 ) * Includes PPA amount arising from the acquisition of Prudential Life Insurance Company of Korea Ltd., KB Insurance Co., Ltd., and others.

Assets Held for Sale and Asse_2

Assets Held for Sale and Assets of a Disposal Group Held for Sale (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure Of Assets Held For Sale [Abstract]
Schedule Of Assets Held For Sale	Details of assets held for sale as of December 31, 2020 and 2021, are as follows: December 31, 2020 Acquisition Accumulated Carrying Fair value less (In millions of Korean won) Land held for sale ￦ 80,740 ￦ (16,169 ) ￦ 64,571 ￦ 68,321 Buildings held for sale 152,426 (24,887 ) 127,539 134,247 Other assets held for sale 10,676 (5,059 ) 5,617 5,801 ￦ 243,842 ￦ (46,115 ) ￦ 197,727 ￦ 208,369 December 31, 2021 Acquisition Accumulated Carrying Fair value less (In millions of Korean won) Land held for sale ￦ 115,099 ￦ (16,528 ) ￦ 98,571 ￦ 135,192 Buildings held for sale 170,892 (36,923 ) 133,969 149,569 Other assets held for sale 10,142 (5,364 ) 4,778 4,778 ￦ 296,133 ￦ (58,815 ) ￦ 237,318 ￦ 289,539 * Acquisition cost of buildings held for sale is net of accumulated depreciation amount immediately before the initial classification of the assets as held for sale. 2020 Beginning Provision Reversal Business Others Ending (In millions of Korean won) Accumulated impairment losses of assets held for sale ￦ (2,782 ) ￦ (11,593 ) ￦ — ￦ (45,433 ) ￦ 13,693 ￦ (46,115 ) 2021 Beginning Provision Reversal Others Ending (In millions of Korean won) Accumulated impairment losses of assets held for sale ￦ (46,115 ) ￦ (15,490 ) ￦ — ￦ 2,790 ￦ (58,815 )
Fair Value Measurement Inputs Of Assets Held Forsale Whose Fair Values Are Measured [Table Text Block]	Valuation techniques and inputs used to measure the fair value of assets held for sale as of December 31, 2021 are as follows: December 31, 2021 Fair value Valuation 1 Unobservable 2 Estimated range of Effect of (In millions of Korean won) Land and buildings ￦ 289,539 Market comparison Adjustment index 0.68 ~ 1.95 Fair value increases 1 The appraisal value is adjusted by the adjustment ratio in the event the public sale is unsuccessful. 2 Adjustment index is calculated using the time factor correction or local factors or individual factors. Among assets held for sale, real estate was measured by independent appraisers with professional qualifications and recent experience in evaluating similar properties in the area of the property to be assessed. All assets held for sale are classified as Level 3 in accordance with fair value hierarchy in Note 6.1.2.
Summary of Assets of Disposal Group Held for Sale	There is no liabilities of a disposal group held for sale and details of assets of a disposal group held for sale as of December 31, 2021 are as follows: December 31, 2021 498 seventh Holdco LP 498 seventh KOR LLC Total (In millions of Korean won) Cash ￦ 556 ￦ 512 ￦ 1,068 Investments in associates — 169,424 169,424 Other assets — 1,257 1,257 ￦ 556 ￦ 171,193 ￦ 171,749
Summary of Accumulated Other Comprehensive Income Relating to Assets	Details of accumulated other comprehensive income relating to assets of a disposal group held for sale as of December 31, 2021 are as follows: December 31, 2021 (In millions of Korean won) Currency translation differences ￦ 7,671

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Miscellaneous assets [abstract]
Summary of Other Assets	19.1 Details of other assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Other financial assets Other receivables ￦ 10,628,272 ￦ 6,732,917 Accrued income 1,726,651 1,916,667 Guarantee deposits 1,099,618 1,035,522 Domestic exchange settlement debits 722,616 1,014,938 Others 117,330 204,940 Less: Allowances for credit losses (119,762 ) (143,205 ) Less: Present value discount (7,036 ) (6,429 ) 14,167,689 10,755,350 Other non-financial Other receivables 1,091 1,764 Prepaid expenses 254,152 254,990 Guarantee deposits 3,906 7,268 Insurance assets 2,376,679 2,924,698 Separate account assets 10,210,047 10,556,935 Others 3,158,993 3,689,340 Less: Allowances for credit losses (17,520 ) (16,172 ) 15,987,348 17,418,823 ￦ 30,155,037 ￦ 28,174,173 19.2 Changes in allowances for credit losses of other assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Other financial Other non-financial Total (In millions of Korean won) Beginning ￦ 104,629 ￦ 24,235 ￦ 128,864 Write-offs (6,517 ) (8,503 ) (15,020 ) Provision 22,153 1,726 23,879 Business combination 7,946 59 8,005 Others (8,449 ) 3 (8,446 ) Ending ￦ 119,762 ￦ 17,520 ￦ 137,282 2021 Other financial Other non-financial Total (In millions of Korean won) Beginning ￦ 119,762 ￦ 17,520 ￦ 137,282 Write-offs (3,504 ) (380 ) (3,884 ) Provision (reversal) 25,387 (447 ) 24,940 Business combination 227 — 227 Others 1,333 (521 ) 812 Ending ￦ 143,205 ￦ 16,172 ￦ 159,377

Financial Liabilities at Fair_2

Financial Liabilities at Fair Value Through Profit or Loss (Tables)	12 Months Ended
	Dec. 31, 2021
Current financial liabilities at fair value through profit or loss [abstract]
Summary of Financial Liabilities At Fair Value Through Profit Or Loss	20.1 Details of financial liabilities at fair value through profit or loss and financial liabilities designated at fair value through profit or loss as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial liabilities at fair value through profit or loss Borrowed securities sold ￦ 1,934,735 ￦ 2,826,885 Others 91,216 112,699 2,025,951 2,939,584 Financial liabilities designated at fair value through profit or loss Derivative-linked securities 9,784,107 9,149,396 9,784,107 9,149,396 ￦ 11,810,058 ￦ 12,088,980
Summary of Difference Between Carrying Amount And Contractually Required to Pay at Maturity Of Financial Liabilities Designated At Fair Value Through Profit Or Loss Explanatory	20.2 Difference between the amount contractually required to pay at maturity and carrying amount of financial liabilities designated at fair value through profit or loss as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Amount contractually required to pay at maturity ￦ 9,583,186 ￦ 8,957,602 Carrying amount 9,784,107 9,149,396 Difference ￦ (200,921 ) ￦ (191,794 )

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2021
Deposits from customers [abstract]
Summary of Details of Deposits	Details of deposits as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Demand deposits Demand deposits in Korean won ￦ 162,155,728 ￦ 180,560,022 Demand deposits in foreign currencies 14,473,832 15,955,246 176,629,560 196,515,268 Time deposits Time deposits in Korean won 149,435,968 155,799,563 149,435,968 155,799,563 Time deposits in foreign currencies 10,043,679 15,594,718 Fair value adjustments of fair value hedged time deposits in foreign currencies 2,089 (1,319 ) 10,045,768 15,593,399 159,481,736 171,392,962 Certificates of deposits 2,468,924 4,115,688 ￦ 338,580,220 ￦ 372,023,918

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about borrowings [abstract]
Summary of Debt Securities Explanatory	22.1 Details of borrowings as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) General borrowings ￦ 32,312,859 ￦ 40,859,845 Bonds sold under repurchase agreements and others 16,334,365 14,374,863 Call money 1,179,932 1,677,666 ￦ 49,827,156 ￦ 56,912,374
Summary of Details of Borrowings	22.2 Details of general borrowings as of December 31, 2020 and 2021, are as follows: Lenders Interest rate December 31, 2020 December 31, 2021 (In millions of Korean won) Borrowings in Korean won Borrowings from the Bank of Korea The Bank of Korea 0.25 ￦ 6,463,267 ￦ 7,131,019 Borrowings from the government SEMAS and others 0.00 ~ 2.70 2,675,568 2,683,056 Borrowings from banks Shinhan Bank and others 1.70 ~ 5.30 137,952 171,482 Borrowings from non-banking Korea Securities Finance Corporation and others 0.20 ~ 4.74 2,203,702 1,935,906 Other borrowings The Korea Development Bank and others 0.00 ~ 4.90 9,717,382 13,292,759 21,197,871 25,214,222 Borrowings in foreign currencies Due to banks Hana Bank and others — 292 2,143 Borrowings from banks Central Bank of Uzbekistan and others 0.00 ~ 13.50 9,839,110 13,396,379 Borrowings from other financial institutions The Export-Import Bank of Korea and others 0.60 ~ 1.36 23,827 24,867 Other borrowings Bank of New York Mellon and others 0.00 ~ 2.80 1,251,759 2,222,234 11,114,988 15,645,623 ￦ 32,312,859 ￦ 40,859,845
Schedule of Repurchase Agreements	22.3 Details of bonds sold under repurchase agreements and others as of December 31, 2020 and 2021, are as follows: Lenders Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Bonds sold under repurchase agreements Individuals, groups, and corporations 0.00~9.75 ￦ 16,329,799 ￦ 14,372,761 Bills sold Counter sale 0.20~2.00 4,566 2,102 ￦ 16,334,365 ￦ 14,374,863
Summary of Details of Call Money	22.4 Details of call money as of December 31, 2020 and 2021, are as follows: Lenders Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Call money in Korean won The Export-Import Bank of Korea and others 1.52 ￦ 510,000 ￦ 40,000 Call money in foreign currencies Bank Mandiri and others 0.00~4.25 669,932 1,637,666 ￦ 1,179,932 ￦ 1,677,666

Debentures (Tables)

Debentures (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure Of Detailed Information About Debentures [Abstract]
Summary of Details of Debentures	23.1 Details of debentures as of December 31, 2020 and 2021, are as follows: Interest rate December 31, December 31, 2020 December 31, 2021 (In millions of Korean won) Debentures in Korean won Structured debentures 5.65 ~ 8.62 ￦ 1,960 ￦ 910 Exchangeable bonds* 0.00 240,000 240,000 Subordinated fixed rate debentures 2.02 ~ 7.86 4,834,407 6,241,957 Fixed rate debentures 0.80 ~ 13.70 47,229,619 44,124,235 Floating rate debentures 1.24 ~ 2.57 3,190,000 6,893,782 55,495,986 57,500,884 Fair value adjustments of fair value hedged debentures in Korean won (6,839 ) (79,877 ) Less: Discount on debentures in Korean won (32,028 ) (38,976 ) Less: Adjustment for exchange right of exchangeable bonds in Korean won (14,957 ) (11,719 ) 55,442,162 57,370,312 Debentures in foreign currencies Floating rate debentures 0.37 ~ 1.46 2,232,938 2,749,174 Fixed rate debentures 0.05 ~ 12.00 5,030,580 7,312,966 7,263,518 10,062,140 Fair value adjustments of fair value hedged debentures in foreign currencies 81,333 27,953 Less: Discount on debentures in foreign currencies (26,326 ) (30,217 ) 7,318,525 10,059,876 ￦ 62,760,687 ￦ 67,430,188 * Fair value of the liability component of exchangeable bonds is calculated by using market interest rate of bonds under the same conditions without the exchange right. The residual amount after deducting the liability component from the issuance amount, represents the value of the exchange right and is recorded in equity. Shares to be exchanged are 5 million treasury shares of KB Financial Group Inc. with the exchange price of ￦ 48,000. Exercise period for exchange right is from the 60th day of the issuance date to 10 days before the maturity date.
Summary of Changes In Debentures Based On Face Value	23.2 Changes in debentures based on par value for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Issue Repayment Business Others Ending (In millions of Korean won) Debentures in Korean won Structured debentures ￦ 33,310 ￦ — ￦ (1,350 ) ￦ — ￦ (30,000 ) ￦ 1,960 Exchangeable bonds — 240,000 — — — 240,000 Subordinated fixed rate debentures 3,386,590 2,150,000 (702,183 ) — — 4,834,407 Fixed rate debentures 40,596,755 111,677,084 (105,044,220 ) — — 47,229,619 Floating rate debentures 1,580,000 2,010,000 (400,000 ) — — 3,190,000 45,596,655 116,077,084 (106,147,753 ) — (30,000 ) 55,495,986 Debentures in foreign currencies Floating rate debentures 2,227,607 823,478 (675,075 ) — (143,072 ) 2,232,938 Fixed rate debentures 3,094,196 2,909,967 (937,972 ) 277,087 (312,698 ) 5,030,580 5,321,803 3,733,445 (1,613,047 ) 277,087 (455,770 ) 7,263,518 ￦ 50,918,458 ￦ 119,810,529 ￦ (107,760,800 ) ￦ 277,087 ￦ (485,770 ) ￦ 62,759,504 2021 Beginning Issue Repayment Others Ending (In millions of Korean won) Debentures in Korean won Structured debentures ￦ 1,960 ￦ — ￦ (1,050 ) ￦ — ￦ 910 Exchangeable bonds 240,000 — — — 240,000 Subordinated fixed rate debentures 4,834,407 1,409,000 (1,450 ) — 6,241,957 Fixed rate debentures 47,229,619 110,295,448 (113,400,832 ) — 44,124,235 Floating rate debentures 3,190,000 6,085,064 (2,381,282 ) — 6,893,782 55,495,986 117,789,512 (115,784,614 ) — 57,500,884 Debentures in foreign currencies Floating rate debentures 2,232,938 810,920 (500,901 ) 206,217 2,749,174 Fixed rate debentures 5,030,580 3,195,539 (1,224,070 ) 310,917 7,312,966 7,263,518 4,006,459 (1,724,971 ) 517,134 10,062,140 ￦ 62,759,504 ￦ 121,795,971 ￦ (117,509,585 ) ￦ 517,134 ￦ 67,563,024

Provisions (Tables)

Provisions (Tables)	12 Months Ended
	Dec. 31, 2021
Provisions [abstract]
Summary of Other Provisions	24.1 Details of provisions as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Provisions for credit losses of unused loan commitments ￦ 298,753 ￦ 308,640 Provisions for credit losses of acceptances and guarantees 62,254 121,104 Provisions for credit losses of financial guarantee contracts 6,348 5,351 Provisions for restoration costs 151,696 152,186 Others * 195,852 221,323 ￦ 714,903 ￦ 808,604 * Includes provisions for redemption-suspended funds. 24.2 Changes in provisions for credit losses of unused loan commitments, and acceptances and guarantees for the years ended December 31, 2020 and 2021, are as follows: 2020 Provisions for credit losses of unused loan commitments Provisions for credit losses of acceptances and guarantees 12-month Lifetime expected 12-month Lifetime expected Non- impaired Impaired Non- impaired Impaired (In millions of Korean won) Beginning ￦ 127,297 ￦ 71,464 ￦ 9,387 ￦ 24,961 ￦ 36,012 ￦ 16,786 Transfer between stages: Transfer to 12-month 23,318 (21,694 ) (1,624 ) 194 (191 ) (3 ) Transfer to lifetime expected credit losses (13,431 ) 15,991 (2,560 ) (486 ) 486 — Impairment (304 ) (3,474 ) 3,778 (5 ) (461 ) 466 Provision (reversal) for credit losses 24,583 65,449 (412 ) 9,482 (20,389 ) (2,734 ) Business combination 19,426 — — — — — Others (exchange differences, etc.) (18,168 ) (273 ) — (1,058 ) (619 ) (187 ) Ending* ￦ 162,721 ￦ 127,463 ￦ 8,569 ￦ 33,088 ￦ 14,838 ￦ 14,328 2021 Provisions for credit losses of unused loan commitments Provisions for credit losses of acceptances and guarantees 12-month Lifetime expected 12-month Lifetime expected Non- impaired Impaired Non- impaired Impaired (In millions of Korean won) Beginning ￦ 162,721 ￦ 127,463 ￦ 8,569 ￦ 33,088 ￦ 14,838 ￦ 14,328 Transfer between stages: Transfer to 12-month 38,831 (37,595 ) (1,236 ) 3,958 (203 ) (3,755 ) Transfer to lifetime expected credit losses (27,308 ) 28,203 (895 ) (3,973 ) 3,982 (9 ) Impairment (457 ) (1,002 ) 1,459 (10 ) (85 ) 95 Provision (reversal) for credit losses (22,543 ) 29,145 127 (7,425 ) 64,178 711 Business combination 813 — — — — — Others (exchange differences, etc.) 1,940 405 — 1,759 (540 ) 167 Ending* ￦ 153,997 ￦ 146,619 ￦ 8,024 ￦ 27,397 ￦ 82,170 ￦ 11,537 * Includes additional provisions of ￦ 14,974 million and ￦ 15,664 million for industries and borrowers which are highly affected by COVID-19 (non-impaired) 24.3 Changes in provisions for credit losses of financial guarantee contracts for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Beginning ￦ 6,063 ￦ 6,348 Provision (reversal) 280 (830 ) Others 5 (167 ) Ending ￦ 6,348 ￦ 5,351 24.4 Changes in provisions for restoration costs for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Beginning ￦ 120,340 ￦ 151,696 Provision 14,192 11,350 Reversal (2,010 ) (2,075 ) Used (9,469 ) (15,739 ) Unwinding of discount 2,372 1,589 Effect of changes in discount rate 23,886 5,365 Business combination 2,385 — Ending ￦ 151,696 ￦ 152,186 24.5 Changes in other provisions for the years ended December 31, 2020 and 2021, are as follows: 2020 Membership Dormant Litigations Others Total (In millions of Korean won) Beginning ￦ 14,669 ￦ 3,579 ￦ 28,690 ￦ 68,681 ￦ 115,619 Increase 76,138 2,607 19,186 89,361 187,292 Decrease (71,306 ) (3,179 ) (9,725 ) (28,173 ) (112,383 ) Business combination — — 2,366 2,958 5,324 Ending ￦ 19,501 ￦ 3,007 ￦ 40,517 ￦ 132,827 ￦ 195,852 2021 Membership Dormant Litigations Others Total (In millions of Korean won) Beginning ￦ 19,501 ￦ 3,007 ￦ 40,517 ￦ 132,827 ￦ 195,852 Increase 77,384 3,429 18,670 71,972 171,455 Decrease (73,983 ) (3,374 ) (4,190 ) (64,614 ) (146,161 ) Others — — 171 6 177 Ending ￦ 22,902 ￦ 3,062 ￦ 55,168 ￦ 140,191 ￦ 221,323

Net Defined Benefit Liabiliti_2

Net Defined Benefit Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of defined benefit plans [abstract]
Summary of Changes in the Net Defined Benefit Liabilities	25.2 Changes in net defined benefit liabilities for the years ended December 31, 2020 and 2021, are as follows: 2020 Present value of Fair value of plan Net defined benefit (In millions of Korean won) Beginning ￦ 2,299,476 ￦ (2,088,710 ) ￦ 210,766 Current service cost 233,273 — 233,273 Past service cost (16,197 ) — (16,197 ) Gains on settlement (1,912 ) — (1,912 ) Interest expense (income) 46,178 (41,435 ) 4,743 Remeasurements: Actuarial gains and losses by changes in demographic assumptions (9,611 ) — (9,611 ) Actuarial gains and losses by changes in financial assumptions 4,995 — 4,995 Actuarial gains and losses by experience adjustments 16,292 — 16,292 Return on plan assets (excluding amounts included in interest income) — 6,308 6,308 Contributions by the Group — (268,918 ) (268,918 ) Contributions by the employees — (248 ) (248 ) Payments from plans (settlement) (8,162 ) 8,162 — Payments from plans (benefit payments) (148,468 ) 144,546 (3,922 ) Payments from the Group (34,361 ) — (34,361 ) Transfer in 9,673 (9,027 ) 646 Transfer out (8,635 ) 8,635 — Effect of exchange differences (724 ) 5 (719 ) Effect of business acquisition and disposal 110,080 (62,271 ) 47,809 Others 26 — 26 Ending* ￦ 2,491,923 ￦ (2,302,953 ) ￦ 188,970 2021 Present value of Fair value of plan Net defined benefit (In millions of Korean won) Beginning ￦ 2,491,923 ￦ (2,302,953 ) ￦ 188,970 Current service cost 241,448 — 241,448 Past service cost 451 — 451 Gains on settlement (4,311 ) — (4,311 ) Interest expense (income) 47,481 (44,560 ) 2,921 Remeasurements: Actuarial gains and losses by changes in demographic assumptions 27,611 — 27,611 Actuarial gains and losses by changes in financial assumptions 52,684 — 52,684 Actuarial gains and losses by experience adjustments (24,592 ) — (24,592 ) Return on plan assets (excluding amounts included in interest income) — 9,438 9,438 Contributions by the Group — (319,601 ) (319,601 ) Contributions by the employees — (17,574 ) (17,574 ) Payments from plans (settlement) (6,961 ) 6,944 (17 ) Payments from plans (benefit payments) (221,276 ) 221,274 (2 ) Payments from the Group (34,242 ) — (34,242 ) Transfer in 9,854 (9,292 ) 562 Transfer out (9,292 ) 9,292 — Effect of exchange differences 1,670 (47 ) 1,623 Effect of business acquisition and disposal 21 — 21 Others 48 — 48 Ending* ￦ 2,572,517 ￦ (2,447,079 ) ￦ 125,438 * The net defined benefit liabilities of ￦ 188,970 million is calculated by subtracting ￦ 50,597 million of net defined benefit assets from ￦ 239,567 million of net defined benefit liabilities as of December 31, 2020. The net defined benefit liabilities of ￦ 125,438 million is calculated by subtracting ￦ 100,083 million of net defined benefit assets from ￦ 225,521 million of net defined benefit liabilities as of December 31, 2021.
Summary of the Net Defined Benefit Liabilities	25.3 Details of net defined benefit liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Present value of defined benefit obligation ￦ 2,491,923 ￦ 2,572,517 Fair value of plan assets (2,302,953 ) (2,447,079 ) Net defined benefit liabilities ￦ 188,970 ￦ 125,438
Summary of Post-Employment Benefits Recognized in Profit Or Loss	25.4 Details of post-employment benefits recognized in profit or loss for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Current service cost ￦ 227,576 ￦ 233,273 ￦ 241,448 Past service cost 2,276 (16,197 ) 451 Net interest expense on net defined benefit liabilities 5,545 4,743 2,921 Gains on settlement — (1,912 ) (4,311 ) Post-employment benefits * ￦ 235,397 ￦ 219,907 ￦ 240,509 * Includes post-employment benefits amounting to ￦ 2,575 million and￦ 2,840 million recognized as other operating expenses and ￦ 121 million and ￦ 176 million recognized as prepayment for the years ended December 31, 2019 and 2020, and post-employment benefits amounting to ￦ 3,194 million recognized as other operating expenses for the year ended December 31, 2021.
Summary of Remeasurements of the Net Defined Benefit Liabilities Recognized in Other Comprehensive Income (Loss)	25.5 Details of remeasurements of net defined benefit liabilities recognized in other comprehensive income (loss) for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Remeasurements: Return on plan assets (excluding amounts included in interest income) ￦ (11,116 ) ￦ (6,308 ) ￦ (9,438 ) Actuarial gains and losses (64,083 ) (11,676 ) (55,703 ) Income tax effect 20,676 4,949 18,638 Effect of exchange differences — (399 ) 993 Remeasurements after income tax expense ￦ (54,523 ) ￦ (13,434 ) ￦ (45,510 )
Summary of the Fair Value of Plan Assets	25.6 Details of fair value of plan assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 Assets quoted Assets not Total (In millions of Korean won) Cash and due from financial institutions ￦ — ￦ 2,299,500 ￦ 2,299,500 Derivative instruments — 1,930 1,930 Investment fund — 1,523 1,523 ￦ — ￦ 2,302,953 ￦ 2,302,953 December 31, 2021 Assets quoted Assets not Total (In millions of Korean won) Cash and due from financial institutions ￦ — ￦ 2,441,324 ￦ 2,441,324 Derivative instruments — 3,427 3,427 Investment fund — 2,328 2,328 ￦ — ￦ 2,447,079 ￦ 2,447,079
Summary of Significant Actuarial Assumptions	25.7 Details of significant actuarial assumptions used as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Discount rate (%) 0.90~2.00 1.80~2.70 Salary increase rate (%) 0.00~7.50 0.00~7.50 Turnover rate (%) 0.00~50.00 0.00~50.00 Mortality assumptions are based on the experience-based mortality table issued by Korea Insurance Development Institute in 2019.
Summary of Sensitivity Analysis of Significant Actuarial Assumptions	25.8 Results of sensitivity analysis of significant actuarial assumptions as of December 31, 2021, are as follows: Changes in Effect on defined benefit obligation Increase in assumptions Decrease in assumptions Discount rate 0 %p 4.24% decrease 4.56% increase Salary increase rate 0 %p 4.27% increase 4.02% decrease Turnover rate 0 %p 0.37% decrease 0.38% increase The above sensitivity analysis is based on a change in an assumption while holding all other assumptions constant. In practice, this is unlikely to occur, and changes in some of the assumptions may be correlated. The sensitivity of the defined benefit obligation to changes in significant actuarial assumptions is calculated using the same projected unit credit method used in calculating the defined benefit obligation recognized in the consolidated statement of financial position.
Summary of Expected Maturity Analysis of Undiscounted Pension Benefit Payments Including Expected Future Benefit	25.9 Expected maturity analysis of undiscounted pension benefit payments (including expected future benefit) as of December 31, 2021, are as follows: Up to 1 year 1~2 years 2~5 years 5~10 years Over 10 years Total (In millions of Korean won) Pension benefits * ￦ 89,554 ￦ 177,777 ￦ 709,744 ￦ 1,466,517 ￦ 5,258,052 ￦ 7,701,644 * Amount determined under the promotion compensation type defined contribution plan is excluded. The weighted average duration of the defined benefit obligation is 1 ~ 11 years . 25.10 Reasonable estimation of expected contribution to plan assets for the next annual reporting period after December 31, 2021 is 224,658 million.

Other Liabilities (Tables)

Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Miscellaneous liabilities [abstract]
Summary of Accrued Expenses and Other Liabilities Explanatory	Details of other liabilities as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Other financial liabilities Other payables ￦ 14,247,067 ￦ 11,175,682 Prepaid card and debit card payables 31,184 33,972 Accrued expenses 2,787,360 2,620,819 Financial guarantee contracts liabilities 49,286 52,603 Deposits for letter of guarantees and others 1,103,876 1,093,680 Domestic exchange settlement credits 938,039 5,125,430 Foreign exchange settlement credits 134,678 169,264 Due to trust accounts 7,542,955 7,033,849 Liabilities incurred from agency relationships 765,844 739,276 Account for agency business 400,507 423,798 Dividend payables 478 474 Lease liabilities 559,113 578,808 Others 51,901 446,747 28,612,288 29,494,402 Other non-financial Other payables 386,094 348,003 Unearned revenue 669,908 656,375 Accrued expenses 815,941 956,461 Deferred revenue on credit card points 211,815 214,053 Withholding taxes 180,092 164,333 Separate account liabilities 10,701,404 11,071,159 Others 226,481 225,696 13,191,735 13,636,080 ￦ 41,804,023 ￦ 43,130,482

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [abstract]
Summary of Issued Capital	27.1.1 Details of share capital as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Type of share Ordinary share Ordinary share (In millions of Korean won Number of authorized shares 1,000,000,000 1,000,000,000 Par value per share (In Korean won) ￦ 5,000 ￦ 5,000 Number of issued shares 415,807,920 415,807,920 Share capital ￦ 2,090,558 ￦ 2,090,558 27.1.2 Changes in outstanding shares for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In number of shares) Beginning 389,634,335 389,634,335 Increase — — Decrease — — Ending 389,634,335 389,634,335
Schedule of Hybrid Securities	Details of hybrid securities classified as equity as of December 31, 2020 and 2021, are as follows: Hybrid securities Issuance date Maturity Interest rate (%) as of December 31, 2021 December 31, 2020 December 31, 2021 (In millions of Korean won) The 1-1 st May 2, 2019 Perpetual bond 3.23 ￦ 349,309 ￦ 349,309 The 1-2 nd May 2, 2019 Perpetual bond 3.44 49,896 49,896 The 2-1 st May 8, 2020 Perpetual bond 3.30 324,099 324,099 The 2-2 nd May 8, 2020 Perpetual bond 3.43 74,812 74,812 The 3-1 st Jul. 14, 2020 Perpetual bond 3.17 369,099 369,099 The 3-2 nd Jul. 14, 2020 Perpetual bond 3.38 29,922 29,922 The 4-1 st Oct. 20, 2020 Perpetual bond 3.00 433,996 433,996 The 4-2 nd Oct. 20, 2020 Perpetual bond 3.28 64,855 64,855 The 5-1 st Feb. 19, 2021 Perpetual bond 2.67 — 419,071 The 5-2 nd Feb. 19, 2021 Perpetual bond 2.87 — 59,862 The 5-3 rd Feb. 19, 2021 Perpetual bond 3.28 — 119,727 The 6-1 st May 28, 2021 Perpetual bond 3.20 — 165,563 The 6-2 nd May 28, 2021 Perpetual bond 3.60 — 109,708 The 7-1 st Oct. 8, 2021 Perpetual bond 3.57 — 208,468 The 7-2 nd Oct. 8, 2021 Perpetual bond 3.80 — 59,834 ￦ 1,695,988 ￦ 2,838,221 The above hybrid securities are early redeemable by the Group after 5 or 7 or 10 years from the issuance date. On the other hand, hybrid securities of ￦ 574,580 million issued by Kookmin Bank are recognized as non-controlling
Summary of Reserves and Other Equity Interest	Details of capital surplus as of December 31, 2020 and 2021, are as follows December 31, 2020 December 31, 2021 (In millions of Korean won) Paid-in ￦ 13,190,274 ￦ 13,190,274 Losses on sales of treasury shares (481,332 ) (481,332 ) Other capital surplus 4,002,714 4,219,356 Consideration for exchange right of exchangeable bonds 11,933 11,933 ￦ 16,723,589 ￦ 16,940,231
Schedule of Accumulated Other Comprehensive Income Loss	Details of accumulated other comprehensive income as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Remeasurements of net defined benefit liabilities ￦ (282,650 ) ￦ (328,392 ) Currency translation differences (131,113 ) 96,534 Gains on financial instruments at fair value through other comprehensive income 717,230 918,927 Share of other comprehensive loss of associates and joint ventures (3,529 ) (2,980 ) Losses on cash flow hedging instruments (28,597 ) (7,733 ) Gains (losses) on hedging instruments of net investments in foreign operations 22,277 (35,658 ) Other comprehensive income (loss) arising from separate account 8,698 (55,116 ) Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk (11,507 ) 2,208 Gains on overlay adjustment 339,202 459,484 Assets of a disposal group held for sale — 7,671 ￦ 630,011 ￦ 1,054,945
Schedule of Appropriated and Unappropriated Retained Earnings	Details of retained earnings as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Legal reserves 1 ￦ 557,405 ￦ 695,347 Voluntary reserves 982,000 982,000 Unappropriated retained earnings 2 21,001,211 23,995,468 ￦ 22,540,616 ￦ 25,672,815 1 With respect to the allocation of net profit earned in a fiscal term, the Parent Company must set aside in its legal reserve an amount equal to at least 10% of its profit after tax as reported in the financial statements, each time it pays dividends on its net profits earned until its legal reserve reaches the aggregate amount of its paid-in 2 Retained earnings restricted for dividend at subsidiaries level pursuant to laws and regulations amounts to ￦ 4,116,579 million as of December 31, 2021.
Summary of Treasury Shares	Changes in treasury shares for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Acquisition Disposal Ending (In millions of Korean won and in number of shares) Number of treasury shares * 26,173,585 — — 26,173,585 Carrying amount ￦ 1,136,188 ￦ — ￦ — ￦ 1,136,188 2021 Beginning Acquisition Disposal Ending (In millions of Korean won and in number of shares) Number of treasury shares * 26,173,585 — — 26,173,585 Carrying amount ￦ 1,136,188 ￦ — ￦ — ￦ 1,136,188 * 5 million treasury shares are deposited at the Korea Securities Depository for the exchange of exchangeable bonds.

Net Interest Income (Tables)

Net Interest Income (Tables)	12 Months Ended
	Dec. 31, 2021
Interest Revenue (Expense), Net [Abstract]
Summary of Interest Income, Interest Expense and Net Interest Income	28. Net Interest Income Details of interest income, interest expense, and net interest income for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Interest income Due from financial institutions measured at fair value through profit or loss ￦ 2,685 ￦ 649 ￦ 1,723 Securities measured at fair value through profit or loss 668,377 647,840 579,128 Loans measured at fair value through profit or loss 33,001 10,876 9,537 Securities measured at fair value through other comprehensive income 774,864 719,434 784,980 Loans measured at fair value through other comprehensive income 14,708 7,899 4,618 Due from financial institutions measured at amortized cost 150,635 92,155 66,375 Securities measured at amortized cost 599,519 627,201 765,656 Loans measured at amortized cost 12,247,493 12,177,822 12,745,780 Others 147,905 201,871 253,081 14,639,187 14,485,747 15,210,878 Interest expense Deposits 3,481,121 2,916,794 2,218,556 Borrowings 596,425 572,946 510,385 Debentures 1,240,566 1,186,310 1,169,708 Others 124,288 87,423 82,657 5,442,400 4,763,473 3,981,306 Net interest income ￦ 9,196,787 ￦ 9,722,274 ￦ 11,229,572
Summary of Interest Income Recognized on Impaired Loans	Interest income recognized on impaired loans is ￦ 54,033 million, ￦ 56,606 million and ￦ 52,638 million for the years ended December 31, 2019, 2020 and 2021, respectively.

Net Fee and Commission Income (

Net Fee and Commission Income (Tables)	12 Months Ended
	Dec. 31, 2021
Fee and commission income (expense) [abstract]
Schedule of Details of Fee and Commission Income and Expense	Details of fee and commission income, fee and commission expense, and net fee and commission income for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Fee and commission income Banking activity fees ￦ 214,512 ￦ 189,100 ￦ 178,412 Lending activity fees 83,916 91,663 82,184 Credit card and debit card related fees 1,316,636 1,378,450 1,526,911 Agent activity fees 172,211 196,518 205,206 Trust and other fiduciary fees 388,352 331,827 408,834 Fund management related fees 153,798 154,612 178,090 Acceptances and guarantees fees 48,122 54,108 49,782 Foreign currency related fees 134,145 173,313 245,299 Securities agency fees 145,846 172,097 174,709 Other business account commission on consignment 36,813 40,461 39,178 Commissions received on securities business 445,987 793,278 881,407 Lease fees 428,195 636,301 897,983 Others 310,714 315,296 455,611 3,879,247 4,527,024 5,323,606 Fee and commission expense Trading activity related fees * 28,869 38,497 54,857 Lending activity fees 26,040 33,444 42,981 Credit card and debit card related fees 892,391 848,823 831,724 Outsourcing related fees 190,312 216,962 210,480 Foreign currency related fees 42,902 49,435 51,931 Others 343,729 380,924 506,050 1,524,243 1,568,085 1,698,023 Net fee and commission income ￦ 2,355,004 ￦ 2,958,939 ￦ 3,625,583 * Fees from financial instruments at fair value through profit or loss

Net Gains or Losses on Financ_2

Net Gains or Losses on Financial Instruments at Fair Value Through Profit or Loss (Tables)	12 Months Ended
	Dec. 31, 2021
Net Gains Or Losses On Financial Assets Liabilities At Fair Value Through Profit Or Loss [Abstract]
Summary of Net Gains Or Losses On Financial Instruments At Fair Value Through Profit Or Loss	Net gains or losses on financial instruments at fair value through profit or loss include dividend income, gains or losses arising from changes in fair value, and gains or losses arising from sales and redemptions. Details of net gains or losses on financial instruments at fair value through profit or loss for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains on financial instruments at fair value through profit or loss Financial assets at fair value through profit or loss: Debt securities ￦ 1,613,946 ￦ 2,061,505 ￦ 1,804,112 Equity securities 428,646 725,072 733,823 2,042,592 2,786,577 2,537,935 Derivatives held for trading: Interest rate 2,685,998 2,632,246 4,820,712 Currency 5,251,597 8,335,594 7,492,806 Stock or stock index 2,612,422 2,808,284 1,603,501 Credit 41,548 28,434 20,147 Commodity 15,240 18,097 21,864 Others 212,731 231,901 145,879 10,819,536 14,054,556 14,104,909 Financial liabilities at fair value through profit or loss 46,750 28,160 72,585 Other financial instruments 5,811 689 6,753 12,914,689 16,869,982 16,722,182 Losses on financial instruments at fair value through profit or loss Financial assets at fair value through profit or loss: Debt securities 752,999 1,040,285 1,280,960 Equity securities 315,743 444,554 426,431 1,068,742 1,484,839 1,707,391 Derivatives held for trading: Interest rate 2,758,205 2,687,114 4,669,893 Currency 5,118,095 8,191,456 7,422,604 Stock or stock index 1,585,086 2,558,205 1,604,027 Credit 42,172 19,213 14,051 Commodity 9,437 21,797 14,815 Others 190,979 253,406 175,411 9,703,974 13,731,191 13,900,801 Financial liabilities at fair value through profit or loss 94,426 153,227 80,790 Other financial instruments 5,704 116 6,839 10,872,846 15,369,373 15,695,821 Net gains on financial instruments at fair value through profit or loss ￦ 2,041,843 ￦ 1,500,609 ￦ 1,026,361
Summary of Net Gains Or Losses On Financial Instruments Designated At Fair Value Through Profit Or Loss	Net gains or losses on financial instruments designated at fair value through profit or loss include gains or losses arising from changes in fair value, and gains or losses arising from sales and redemptions. Details of net gains or losses on financial instruments designated at fair value through profit or loss for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Gains on financial instruments designated at fair value through profit or loss Financial liabilities designated at fair value through profit or loss ￦ 555,749 ￦ 654,045 ￦ 623,929 555,749 654,045 623,929 Losses on financial instruments designated at fair value through profit or loss Financial liabilities designated at fair value through profit or loss 1,953,720 1,143,288 654,986 1,953,720 1,143,288 654,986 Net losses on financial instruments designated at fair value through profit or loss ￦ (1,397,971 ) ￦ (489,243 ) ￦ (31,057 )

Net Other Operating Income an_2

Net Other Operating Income and Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Other Operating Income And Expenses [Abstract]
Summary of Other Operating Income and Expense	Details of other operating income and expenses for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Other operating income Gains on financial instruments at fair value through other comprehensive income: Gains on redemption of financial instruments at fair value through other comprehensive income ￦ 796 ￦ 351 ￦ 2 Gains on disposal of financial instruments at fair value through other comprehensive income 222,371 304,217 126,710 223,167 304,568 126,712 Gains on financial assets at amortized cost: Gains on sale of loans measured at amortized cost 80,746 180,038 136,620 Gains on redemption of securities measured at amortized cost — — 126 Gains on disposal of securities measured at amortized cost — 229 41 80,746 180,267 136,787 Gains on loans measured at fair value through other comprehensive income: Gains on sale of loans measured at fair value through other comprehensive income — — 226 — — 226 Gains on foreign exchange transactions 2,183,703 3,634,987 3,878,089 Dividend income 54,768 45,125 33,805 Others 321,244 591,798 753,575 2,863,628 4,756,745 4,929,194 Other operating expenses Losses on financial instruments at fair value through other comprehensive income: Losses on redemption of financial instruments at fair value through other comprehensive income — 320 2,172 Losses on disposal of financial instruments at fair value through other comprehensive income 16,975 19,159 222,512 16,975 19,479 224,684 Losses on financial assets at amortized cost: Losses on sale of loans measured at amortized cost 19,439 16,061 14,669 Losses on redemption of securities measured at amortized cost — — 6 Losses on disposal of securities measured at amortized cost — 6,513 2 19,439 22,574 14,677 Losses on foreign exchange transactions 1,970,294 3,530,618 3,570,783 Deposit insurance fee 469,015 507,621 550,677 Credit guarantee fund fee 213,911 242,216 263,297 Depreciation expenses of operating lease assets 247,374 423,684 602,908 Others 989,944 1,510,483 1,625,735 3,926,952 6,256,675 6,852,761 Net other operating expenses ￦ (1,063,324 ) ￦ (1,499,930 ) ￦ (1,923,567 )

General and Administrative Ex_2

General and Administrative Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
General And Administrative Expense [Abstract]
Schedule of General and Administrative Expense	32.1 Details of general and administrative expenses for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Expenses related to employee Employee benefits—salaries ￦ 2,557,821 ￦ 2,789,201 ￦ 3,007,439 Employee benefits—others 848,421 871,014 927,665 Post-employment benefits—defined benefit plans 232,701 216,891 237,315 Post-employment benefits—defined contribution plans 27,924 37,328 37,731 Termination benefits 239,790 361,098 322,970 Share-based payments 49,418 49,364 101,935 3,956,075 4,324,896 4,635,055 Depreciation and amortization 784,431 874,911 850,614 Other general and administrative expenses Rental expense 109,745 116,325 112,902 Tax and dues 238,670 260,071 268,383 Communication 48,749 53,596 60,221 Electricity and utilities 29,161 32,298 36,565 Publication 15,136 13,988 13,417 Repairs and maintenance 23,947 32,448 53,218 Vehicle 11,537 14,314 16,901 Travel 21,452 12,251 13,271 Training 31,451 27,610 34,056 Service fees 227,631 238,787 260,298 Electronic data processing expenses 258,456 280,773 314,511 Advertising 228,826 236,618 210,187 Others 286,538 295,926 321,254 1,531,299 1,615,005 1,715,184 ￦ 6,271,805 ￦ 6,814,812 ￦ 7,200,853
Schedule of Stock Grants Linked to Long-term and Short-term Performance	32.2.1.1 Details of stock grants linked to long-term performance as of December 31, 2021, are as follows: Grant date Number of granted shares 1 Vesting conditions 2 (In number of shares) KB Financial Group Inc. Series 22 Apr. 1, 2019 3,278 Services fulfillment, market performan 3 non-market 4 Series 23 May 27, 2019 1,436 Services fulfillment, market performan 3 non-market 4 Series 25 Jan. 1, 2020 36,103 Services fulfillment, market performance 3 non-market 4 Series 27 Jun. 16, 2020 184 S ervices fulfillment, mark 3 non-market 4 Series 28 Nov. 21, 2020 68,135 Services fulfillment, 3 non-market 5 Series 29 Jan. 1, 2021 94,120 Services fulfillment, market pe 3 non-market 4 Series 30 Apr. 1, 2021 3,069 Services fulfillment, market perform 3 non-market 4 Series 31 May 27, 2021 1,344 Services fulfillment, market perfor 3 non-market 4 Series 32 Aug. 20, 2021 125 Services fulfillment, market perfo 3 non-market 4 Deferred grant in 2015 5,303 Satisfied Deferred grant in 2016 6,119 Satisfied Deferred grant in 2017 2,249 Satisfied Deferred grant in 2018 3,863 Satisfied Deferred grant in 2019 15,189 Satisfied Deferred grant in 2020 45,661 Satisfied 286,178 Kookmin Bank Series 76 Apr. 1, 2019 5,765 Services fulfillment, market perfor 3 non-market 4 Series 77 May 27, 2019 4,396 Services fulfillment, market perfor 3 non-market 4 Series 78 Nov. 21, 2019 36,443 Services fulfillment, market performance 3 non-market 6 Series 79 Jan. 1, 2020 223,517 Services fulfillment, market perfor 3 non-market 4 Series 80 Mar. 1, 2020 7,943 Services fulfillment, market perform 3 non-market 4 Series 81 Jan. 1, 2021 234,366 Services fulfillment, market perform 3 non-market 4 Grant date Number of granted shares 1 Vesting conditions 2 (In number of shares) Series 82 Mar. 1, 2021 18,202 Services fulfillment, market performanc 3 non-market 4 Series 83 Apr. 1, 2021 7,871 S ervices fulfillment, market performan 3 non-market 4 Series 84 May 27, 2021 4,032 Services fulfillment, market performance 3 non-market 4 Deferred grant in 2015 760 Satisfied Deferred grant in 2016 12,671 Satisfied Deferred grant in 2017 9,763 Satisfied Deferred grant in 2018 33,916 Satisfied Deferred grant in 2019 66,067 Satisfied Deferred grant in 2020 80,634 Satisfied 746,346 Other subsidiaries Stock granted in 2010 106 Services fulfillment, ma ke perform anc 3 0 0% an non- for manc 4 Stock granted in 2011 146 Stock granted in 2012 420 Stock granted in 2013 544 Stock granted in 2014 1,028 Stock granted in 2015 2,602 Stock granted in 2016 5,713 Stock granted in 2017 17,820 Stock granted in 2018 62,610 Stock granted in 2019 76,872 Stock granted in 2020 375,558 Stock granted in 2021 425,583 969,002 2,001,526 1 Granted shares represent the total number of shares initially granted to executives and employees who have residual shares as of December 31, 2021 (Deferred grants are residual shares vested as of December 31, 2021). 2 Executives and employees were given the right of choice about the timing of the deferred paymen 3 Relative TSR (Total Shareholder Return): [(Fair value at the end of the contract—Fair value at the beginning of the contract) + (Total amount of dividend per share paid during the contract period)] / Fair value at the beginning of the contract 4 Performance results of company and employee 5 EPS (Earnings Per Share), Asset Quality, HCROI (Human Capital Return on Investment), Profit from non-banking 6 EPS, Asset Quality 32.2.1.2 Details of stock grants linked to short-term performance as of December 31, 2021, are as follows: Estimated number of vested shares* Vesting conditions (In number of shares) KB Financial Group Inc. Stock granted in 2015 5,352 Satisfied Stock granted in 2016 5,409 Satisfied Stock granted in 2017 2,489 Satisfied Stock granted in 2018 7,400 Satisfied Stock granted in 2019 18,692 Satisfied Stock granted in 2020 34,658 Satisfied Stock granted in 2021 34,965 Proportional to service period Kookmin Bank Stock granted in 2015 5,019 Satisfied Stock granted in 2016 12,867 Satisfied Stock granted in 2017 3,862 Satisfied Stock granted in 2018 38,067 Satisfied Stock granted in 2019 83,778 Satisfied Stock granted in 2020 135,336 Satisfied Stock granted in 2021 109,561 Proportional to service period Other subsidiaries Stock granted in 2015 7,777 Satisfied Stock granted in 2016 34,345 Satisfied Stock granted in 2017 58,052 Satisfied Stock granted in 2018 226,242 Satisfied Stock granted in 2019 408,353 Satisfied Stock granted in 2020 606,891 Satisfied Stock granted in 2021 267,649 Proportional to service period 2,106,764 * Executives and employees were given the right of choice about the timing of the deferred payment (after the date of retirement), payment ratio, and payment period. Accordingly, a certain percentage of the granted shares is deferred for up to five years after the date of retirement after the deferred grant has been confirmed.
Schedule of Share Grants Measured at Fair Value	32.2.1.3 Stock grants are measured at fair value using the MonteCarlo simulation model and assumptions used in measuring the fair value as of December 31, 2021, are as follows: Risk-free Fair value Fair value (non-market (In Korean won) Linked to long-term performance (KB Financial Group Inc.) Series 22 1.35 50,023~56,379 50,023~56,379 Series 23 1.35 50,023~56,379 50,023~56,379 Series 25 1.35 50,023~56,379 50,023~56,379 Series 27 1.35 — 48,344~51,523 Series 28 1.35 43,391~47,774 46,978~51,724 Series 29 1.35 48,344~56,379 48,344~56,379 Series 30 1.35 46,800~51,523 46,800~51,523 Series 31 1.35 46,800~51,523 46,800~51,523 Series 32 1.35 50,023~56,379 50,023~56,379 Deferred grant in 2015 1.35 — 48,344~56,379 Deferred grant in 2016 1.35 — 51,523~56,379 Deferred grant in 2017 1.35 — 53,308~56,379 Deferred grant in 2018 1.35 — 51,523~56,379 Deferred grant in 2019 1.35 — 53,308~56,379 Deferred grant in 2020 1.35 — 48,344~56,379 (Kookmin Bank) Series 76 1.35 50,023~56,379 50,023~56,379 Series 77 1.35 50,023~56,379 50,023~56,379 Series 78 1.35 49,885~56,223 50,023~56,379 Series 79 1.35 50,023~56,379 50,023~56,379 Series 80 1.35 48,344~53,308 48,344~53,308 Series 81 1.35 48,344~56,379 48,344~56,379 Series 82 1.35 46,800~51,523 46,800~51,523 Series 83 1.35 46,800~51,523 46,800~51,523 Series 84 1.35 46,800~51,523 46,800~51,523 Grant deferred in 2015 1.35 — 56,379~56,379 Grant deferred in 2016 1.35 — 47,153~56,379 Grant deferred in 2017 1.35 — 51,523~56,379 Grant deferred in 2018 1.35 — 51,523~56,379 Grant deferred in 2019 1.35 — 45,096~56,379 Grant deferred in 2020 1.35 — 51,523~56,379 (Other subsidiaries) Stock granted in 2010 1.35 — 53,308~53,308 Stock granted in 2011 1.35 — 53,308~53,308 Stock granted in 2012 1.35 — 51,523~53,308 Stock granted in 2013 1.35 — 51,523~53,308 Stock granted in 2014 1.35 — 51,523~51,523 Stock granted in 2015 1.35 — 46,800~56,379 Stock granted in 2016 1.35 — 46,436~56,502 Stock granted in 2017 1.35 — 45,096~61,294 Stock granted in 2018 1.35 — 45,096~56,502 Stock granted in 2019 1.35 46,800~56,502 45,096~56,502 Stock granted in 2020 1.35 48,344~56,502 45,096~56,502 Stock granted in 2021 1.35 46,800~56,379 46,800~56,502 Risk-free Fair value Fair value (non-market (In Korean won) Linked to short-term performance (KB Financial Group Inc.) Stock granted in 2015 1.35 — 48,344~56,379 Stock granted in 2016 1.35 — 45,304~56,379 Stock granted in 2017 1.35 — 51,523~56,379 Stock granted in 2018 1.35 — 51,523~56,379 Stock granted in 2019 1.35 — 53,308~56,379 Stock granted in 2020 1.35 — 48,344~56,379 Stock granted in 2021 1.35 — 50,023~53,308 (Kookmin Bank) Stock granted in 2015 1.35 — 47,153~56,379 Stock granted in 2016 1.35 — 47,153~56,379 Stock granted in 2017 1.35 — 51,523~56,379 Stock granted in 2018 1.35 — 51,523~56,379 Stock granted in 2019 1.35 — 53,308~56,379 Stock granted in 2020 1.35 — 51,523~56,379 Stock granted in 2021 1.35 — 50,023~54,229 (Other subsidiaries) Stock granted in 2015 1.35 — 46,800~56,502 Stock granted in 2016 1.35 — 46,800~56,502 Stock granted in 2017 1.35 — 45,096~56,502 Stock granted in 2018 1.35 — 45,096~56,502 Stock granted in 2019 1.35 — 45,096~56,502 Stock granted in 2020 1.35 — 46,800~56,502 Stock granted in 2021 1.35 — 46,800~54,649 The Group uses the volatility of the stock price over the previous year as the expected volatility, and uses the arithmetic mean of the price-dividend ratio of one year before, two years before, and three years before the base year as the dividend yield and uses one-year 32.2.1.4 The accrued expenses for share-based payments related to stock grants are ￦ 135,327 million and ￦ 193,023 million as of December 31, 2020 and 2021, respectively, and the compensation costs amounting to ￦ 48,712 million and ￦ 101,897 million were recognized for the years ended December 31, 2020 and 2021, respectively.
Schedule of Mileage Stock	32.2.2.1 Details of mileage stock as of December 31, 2021, are as follows: Grant date Number of granted shares 1 Expected exercise 2 Remaining (In number of shares) Stock granted in 2019 Jan. 11, 2019 26,580 0.00~0.03 14,907 Apr. 1, 2019 167 0.00~0.25 73 Apr. 18, 2019 105 0.00~0.29 45 Apr. 22, 2019 33 0.00~0.30 17 Jul. 1, 2019 109 0.00~0.50 87 Aug. 29, 2019 39 0.00~0.66 35 Sep. 2, 2019 50 0.00~0.67 28 Nov. 1, 2019 119 0.00~0.83 71 Nov. 8, 2019 14 0.00~0.85 6 Dec. 5, 2019 56 0.00~0.93 43 Dec. 6, 2019 84 0.00~0.93 82 Dec. 31, 2019 87 0.00~1.00 65 Stock granted in 2020 Jan. 18, 2020 28,645 0.00~1.05 19,435 May 12, 2020 46 0.00~1.36 44 Jun. 30, 2020 206 0.00~1.50 206 Aug. 26, 2020 40 0.00~1.65 40 Oct. 29, 2020 160 0.00~1.83 160 Nov. 6, 2020 45 0.00~1.85 37 Nov. 30, 2020 35 0.00~1.92 34 Dec. 2, 2020 57 0.00~1.92 53 Dec. 4, 2020 154 0.00~1.93 141 Dec. 30, 2020 88 0.00~2.00 86 Stock granted in 2021 Jan. 15, 2021 28,156 0.00~2.04 26,708 Apr. 1, 2021 89 0.00~2.26 89 Jul. 1, 2021 54 0.00~2.50 54 Jul. 2, 2021 11 0.00~2.50 11 Jul. 27, 2021 70 0.00~2.57 70 Nov. 1, 2021 71 0.00~2.84 71 Nov. 16, 2021 53 0.00~2.88 53 Dec. 3, 2021 91 0.00~2.92 91 Dec. 6, 2021 87 0.00~2.93 87 Dec. 30, 2021 76 0.00~3.00 76 85,677 63,005 1 Mileage stock is exercisable for two years after one year from the grant date at the closing price of the end of the previous month. However, mileage stock can be exercised at the closing price of the end of the previous month on the date of occurrence of retirement or transfer despite a one-year 2 Assessed based on the stock price as of December 31, 2021. These shares are vested immediately at grant date. 32.2.2.2 The accrued expenses for share-based payments related to mileage stock are ￦ 2,862 million and ￦ 3,465 million as of December 31, 2020 and 2021, respectively. The compensation costs amounting to ￦ 1,086 million and ￦ 2,116 million were recognized as expenses for the years ended December 31, 2020 and 2021, respectively.
Schedule of Long-term Share Based Payments	32.2.3.1 Details of long-term share-based payments as of December 31, 2021, are as follows: Grant date Vested shares Expected exercise period (years) Vesting condition (In number of shares) Granted in 2020 2020 13,402 2.00 Services fulfillment 32.2.3.2 Long-term share-based payments are measured at fair value using the MonteCarlo simulation model and assumptions used in measuring the fair value as of December 31, 2021, are as follows: Risk-free rate (%) Fair value (market performance condition) Fair value (non-market performance (In Korean won) Granted in 2020 1.35 — 51,523 The Group uses the volatility of the stock price over the previous year as the expected volatility, and uses the arithmetic mean of the price-dividend ratio of one year before, two years before, and three years before the base year as the dividend yield and uses one-year 32.2.3.3 The accrued expenses for long-term share-based payments are ￦ 652 million and ￦ 690 million as of December 31, 2020 and 2021, respectively. The compensation costs amounting to ￦ 652 million and ￦ 38 million were recognized as expenses for the years ended December 31, 2020 and 2021, respectively.

Net Other Non-Operating Incom_2

Net Other Non-Operating Income and Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Other Nonoperating Income Expense [Abstract]
Schedule Of Other Nonoperating Income Expense	Details of other non-operating 2019 2020 2021 (In millions of Korean won) Other non-operating Gains on disposal of property and equipment ￦ 35,747 ￦ 111,132 ￦ 9,045 Rental income 85,720 113,075 34,791 Gains on a bargain purchase — 145,067 288 Gain on sales of disposal group held for sale 2,731 — — Others 84,793 96,931 81,210 208,991 466,205 125,334 Other non-operating Losses on disposal of prop e 8,587 11,945 6,552 Donation 102,711 113,083 103,647 Restoration costs 2,902 5,043 3,436 Management cost for written-off 3,382 3,018 4,054 Others 64,523 143,726 117,182 182,105 276,815 234,871 Net other non-operating ￦ 26,886 ￦ 189,390 ￦ (109,537 )

Income Tax Expense (Tables)

Income Tax Expense (Tables)	12 Months Ended
	Dec. 31, 2021
Major components of tax expense (income) [abstract]
Schedule of Components of Income Tax Expense Benefit	34.1 Details of income tax expense for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Income tax payable Current income tax expense ￦ 1,043,047 ￦ 1,099,171 ￦ 1,571,947 Adjustments of income tax of prior years recognized in current tax (51,130 ) (13,434 ) 7,952 991,917 1,085,737 1,579,899 Changes in deferred income tax assets and liabilities* 286,099 326,918 214,660 Income tax recognized directly in equity and others Remeasurements of net defined benefit liabilities 20,676 4,949 18,638 Currency translation differences (5,714 ) 14,988 (15,675 ) Net gains or losses on financial assets at fair value through other comprehensive income (13,168 ) (88,907 ) (71,421 ) Share of other comprehensive income or loss of associates and joint ventures (3,147 ) 2,976 (7 ) Gains or losses on cash flow hedging instruments 10,537 7,580 (21,534 ) Gains or losses on hedging instruments of net investments in foreign operations 3,194 (24,500 ) 25,599 Other comprehensive income or loss arising from separate account (1,301 ) 3,671 24,206 Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk 4,294 (3,350 ) (5,202 ) Net gains or losses on overlay adjustment (72,817 ) (61,637 ) (46,834 ) Consideration for exchange right of exchangeable bonds — (4,526 ) — (57,446 ) (148,756 ) (92,230 ) Others — 495 (5,104 ) Income tax expense ￦ 1,220,570 ￦ 1,264,394 ￦ 1,697,225 * Effect of business combination is excluded.
Schedule of Effective Income Tax Rate Reconciliation	34.2 Analysis of the relationship between net profit before income tax expense and income tax expense for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 Tax rate Amount Tax rate Amount Tax rate Amount (In millions of Korean won) Profit before income tax expense ￦ 4,533,198 ￦ 4,779,972 ￦ 6,081,606 Income tax at the applicable tax rate* 27.27 1,236,267 27.28 1,304,130 27.33 1,662,080 Non-taxable (0.52 ) (23,601 ) (1.55 ) (73,855 ) (0.67 ) (40,708 ) Non-deductible 0.42 19,086 0.35 16,541 0.42 25,739 Tax credit and tax exemption (0.01 ) (627 ) (0.08 ) (4,016 ) (0.01 ) (361 ) Temporary difference for which no deferred tax is recognized (0.11 ) (4,860 ) 0.47 22,189 0.08 5,065 Changes in recognition and measurement of deferred tax — (100 ) 0.24 11,616 0.10 5,997 Income tax refund for tax of prior years (0.20 ) (9,105 ) (0.46 ) (22,139 ) (0.23 ) (13,953 ) Income tax expense of overseas branches 0.11 5,004 0.23 10,739 0.31 18,571 Others (0.03 ) (1,494 ) (0.02 ) (811 ) 0.57 34,795 Average effective tax rate and income tax expense 26.93 ￦ 1,220,570 26.45 ￦ 1,264,394 27.90 ￦ 1,697,225 * Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of analysis of other comprehensive income by item [abstract]
Schedule Of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Changes except for Reclassification Transfer within equity Tax effect Ending (In millions of Korean won) Remeasurements of net defined benefit liabilities ￦ (269,505 ) ￦ (18,094 ) ￦ — ￦ — ￦ 4,949 ￦ (282,650 ) Currency translation differences 31,793 (177,894 ) — — 14,988 (131,113 ) Gains on financial instruments at fair value through other comprehensive income 487,331 757,236 (112,020 ) (326,410 ) (88,907 ) 717,230 Share of other comprehensive income (loss) of associates and joint ventures 3,318 (3,923 ) (5,900 ) — 2,976 (3,529 ) Losses on cash flow hedging instruments (27,333 ) (48,034 ) 39,190 — 7,580 (28,597 ) Gains (losses) on hedging instruments of net investments in foreign operations (41,992 ) 88,769 — — (24,500 ) 22,277 Other comprehensive income arising from separate account 18,381 2,834 (16,188 ) — 3,671 8,698 Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk (20,326 ) 12,169 — — (3,350 ) (11,507 ) Gains on overlay adjustment 187,077 248,688 (34,926 ) — (61,637 ) 339,202 ￦ 368,744 ￦ 861,751 ￦ (129,844 ) ￦ (326,410 ) ￦ (144,230 ) ￦ 630,011 2021 Beginning Changes except for Reclassification Transfer within Tax effect Ending (In millions of Korean won) Remeasurements of net defined benefit liabilities ￦ (282,650 ) ￦ (64,380 ) ￦ — ￦ — ￦ 18,638 ￦ (328,392 ) Currency translation differences (131,113 ) 248,998 1,995 (7,671 ) (15,675 ) 96,534 Gains on financial instruments at fair value through other comprehensive income 717,230 (62,043 ) 20,537 314,624 (71,421 ) 918,927 Share of other comprehensive income (loss) of associates and joint ventures (3,529 ) 3,276 (2,720 ) — (7 ) (2,980 ) Losses on cash flow hedging instruments (28,597 ) 95,478 (53,080 ) — (21,534 ) (7,733 ) Gains (losses) on hedging instruments of net investments in foreign operations 22,277 (88,729 ) 5,195 — 25,599 (35,658 ) Other comprehensive income (loss) arising from separate account 8,698 (81,601 ) (6,419 ) — 24,206 (55,116 ) Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk (11,507 ) 18,917 — — (5,202 ) 2,208 Gains on overlay adjustment 339,202 257,574 (90,458 ) — (46,834 ) 459,484 Assets of a disposal group held for sale — — — 7,671 — 7,671 ￦ 630,011 ￦ 327,490 ￦ (124,950 ) ￦ 314,624 ￦ (92,230 ) ￦ 1,054,945

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings per share [abstract]
Schedule of Weighted Average Number of Shares	37.1.1 Weighted average number of ordinary shares outstanding 2019 2020 2021 Number of shares Accumulated Number of shares Accumulated Number of shares Accumulated (In number of shares) Number of issued ordinary shares 415,807,920 152,564,638,665 415,807,920 152,185,698,720 415,807,920 151,769,890,800 Number of treasury shares (26,173,585 ) (9,801,574,522 ) (26,173,585 ) (9,579,532,110 ) (26,173,585 ) (9,553,358,525 ) Average number of ordinary shares outstanding 389,634,335 142,763,064,143 389,634,335 142,606,166,610 389,634,335 142,216,532,275 Number of days 365 366 365 Weighted average number of ordinary shares outstanding 391,131,683 389,634,335 389,634,335
Schedule of Earnings per Share Basic by Common Class	37.1.2 Basic earnings per share 2019 2020 2021 (In Korean won and in number of shares) Profit attributable to shareholders of the Parent Company ￦ 3,311,255,938,055 ￦ 3,468,447,701,501 ￦ 4,409,543,288,213 Deduction: Dividends on hybrid securities (6,512,500,000 ) (22,859,500,000 ) (71,537,500,000 ) Profit attributable to ordinary equity holders of the Parent Company (A) 3,304,743,438,055 3,445,588,201,501 4,338,005,788,213 Weighted average number of ordinary shares outstanding (B) 391,131,683 389,634,335 389,634,335 Basic earnings per share (A/B) ￦ 8,449 ￦ 8,843 ￦ 11,134
Schedule of Adjusted Profit for Diluted Earnings per Share	37.2.1 Adjusted profit for diluted earnings per share 2019 2020 2021 (In Korean won) Profit attributable to shareholders of the Parent Company ￦ 3,311,255,938,055 ￦ 3,468,447,701,501 ￦ 4,409,543,288,213 Deduction: Dividends on hybrid securities (6,512,500,000 ) (22,859,500,000 ) (71,537,500,000 ) Profit attributable to ordinary equity holders of the Parent Company 3,304,743,438,055 3,445,588,201,501 4,338,005,788,213 Adjustments: Interest expense on exchangeable bonds — 798,012,332 2,347,186,871 Adjusted profit for diluted earnings per share ￦ 3,304,743,438,055 ￦ 3,446,386,213,833 ￦ 4,340,352,975,084
Schedule of Adjusted Weighted Average Number of Shares for Diluted Earnings per Share	37.2.2 Weighted average number of ordinary shares outstanding for diluted earnings per share 2019 2020 2021 (In number of shares) Weighted average number of ordinary shares outstanding 391,131,683 389,634,335 389,634,335 Adjustment: Stock grants 2,890,513 3,416,737 3,945,208 Exchangeable bonds — 1,707,650 5,000,000 Adjusted weighted average number of ordinary shares outstanding for diluted earnings per share 394,022,196 394,758,722 398,579,543
Schedule of Earnings per Share Diluted by Common Class	37.2.3 Diluted earnings per share 2019 2020 2021 (In Korean won and in number of shares) Adjusted profit for diluted earnings per share ￦ 3,304,743,438,055 ￦ 3,446,386,213,833 ￦ 4,340,352,975,084 Adjusted weighted average number of ordinary shares outstanding for diluted earnings per share 394,022,196 394,758,722 398,579,543 Diluted earnings per share ￦ 8,387 ￦ 8,730 ￦ 10,890

Insurance Contracts (Tables)

Insurance Contracts (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of types of insurance contracts [abstract]
Summary of Deferred Acquisition Costs	Details of deferred acquisition costs included in other assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Non-life ￦ 965,683 ￦ 1,230,375 Life insurance 205,289 345,831 ￦ 1,170,972 ￦ 1,576,206
Summary of Changes in the Deferred Acquisition Costs Included in Other Assets	Changes in deferred acquisition costs included in other assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Increase Amortization Ending (In millions of Korean won) Non-life ￦ 786,626 ￦ 872,811 ￦ (693,754 ) ￦ 965,683 Life insuranc e 134,739 144,429 (73,879 ) 205,289 ￦ 921,365 ￦ 1,017,240 ￦ (767,633 ) ￦ 1,170,972 2021 Beginning Increase Amortization Ending (In millions of Korean won) Non-life ￦ 965,683 ￦ 965,735 ￦ (701,043 ) ￦ 1,230,375 Life insurance 205,289 258,653 (118,111 ) 345,831 ￦ 1,170,972 ￦ 1,224,388 ￦ (819,154 ) ￦ 1,576,206
Summary of Reinsurance Assets Included in Other Assets	Details of reinsurance assets included in other assets as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Non-life Reserve for outstanding claims: General insurance ￦ 732,579 ￦ 879,936 Automobile insurance 14,916 16,989 Long-term insurance 156,234 178,531 Unearned premium reserve: General insurance 285,634 262,020 Automobile insurance 10,870 5,575 1,200,233 1,343,051 Life insurance Reserve for outstanding claims 2,081 2,169 Unearned premium reserve 951 985 3,032 3,154 Others Reserve for outstanding claims 2,427 2,103 Unearned premium reserve 895 620 3,322 2,723 Total reinsurance assets 1,206,587 1,348,928 Less: Allowances for impairment losses (879 ) (436 ) ￦ 1,205,708 ￦ 1,348,492
Summary of Changes in Reinsurance Assets Included in Other Assets	Changes in reinsurance assets included in other assets for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Net increase Business combination Ending (In millions of Korean won) Non-life insurance Reserve for outstanding claims: General insurance ￦ 361,065 ￦ 371,514 ￦ — ￦ 732,579 Automobile insurance 16,555 (1,639 ) — 14,916 Long-term insurance 130,758 25,476 — 156,234 Unearned premium reserve: General insurance 208,820 76,814 — 285,634 Automobile insurance 19,952 (9,082 ) — 10,870 737,150 463,083 — 1,200,233 Life insurance Reserve for outstanding claims 1,639 (564 ) 1,006 2,081 Unearned premium reserve 408 (27 ) 570 951 2,047 (591 ) 1,576 3,032 Others Reserve for outstanding claims 2,563 (136 ) — 2,427 Unearned premium reserve 844 51 — 895 3,407 (85 ) — 3,322 Total reinsurance assets 742,604 462,407 1,576 1,206,587 Less: Allowances for impairment losses (1,953 ) 1,074 — (879 ) ￦ 740,651 ￦ 463,481 ￦ 1,576 ￦ 1,205,708 2021 Beginning Net increase Ending (In millions of Korean won) Non-life insurance Reserve for outstanding claims: General insurance ￦ 732,579 ￦ 147,357 ￦ 879,936 Automobile insurance 14,916 2,073 16,989 Long-term insurance 156,234 22,297 178,531 Unearned premium reserve: General insurance 285,634 (23,614 ) 262,020 Automobile insurance 10,870 (5,295 ) 5,575 1,200,233 142,818 1,343,051 Life insurance Reserve for outstanding claims 2,081 88 2,169 Unearned premium reserve 951 34 985 3,032 122 3,154 Others Reserve for outstanding claims 2,427 (324 ) 2,103 Unearned premium reserve 895 (275 ) 620 3,322 (599 ) 2,723 Total reinsurance assets 1,206,587 142,341 1,348,928 Less: Allowances for impairment losses (879 ) 443 (436 ) ￦ 1,205,708 ￦ 142,784 ￦ 1,348,492
Summary of Insurance Liabilities	Details of insurance liabilities by insurance type as of December 31, 2020 and 2021, are as follows: December 31, 2020 Non-life insurance Life insurance Others Total (In millions of Korean won) Premium reserve* ￦ 24,990,530 ￦ 23,264,955 ￦ — ￦ 48,255,485 Reserve for outstanding claims 2,885,006 252,883 2,426 3,140,315 Unearned premium reserve 1,859,367 9,450 896 1,869,713 Reserve for dividend to policyholders 129,660 41,024 — 170,684 Reserve for distribution of earnings to policyholders 51,292 5,009 — 56,301 Reserve for loss compensation on participating insurance 20,090 6,818 — 26,908 Guarantee reserve — 895,890 — 895,890 ￦ 29,935,945 ￦ 24,476,029 ￦ 3,322 ￦ 54,415,296 December 31, 2021 Non-life insurance Life insurance Others Total (In millions of Korean won) Premium reserve* ￦ 26,086,004 ￦ 24,363,509 ￦ — ￦ 50,449,513 Reserve for outstanding claims 3,378,427 259,848 2,102 3,640,377 Unearned premium reserve 1,909,327 9,358 622 1,919,307 Reserve for dividend to policyholders 122,025 40,960 — 162,985 Reserve for distribution of earnings to policyholders 63,093 4,857 — 67,950 Reserve for loss compensation on participating insurance 24,790 6,108 — 30,898 Guarantee reserve — 894,906 — 894,906 ￦ 31,583,666 ￦ 25,579,546 ￦ 2,724 ￦ 57,165,936 * Includes negative VOBA amounting to ￦2,698,010 million and ￦2,390,985 million as of December 31, 2020 and 2021, respectively.
Summary of Changes in Insurance Liabilities	Changes in insurance liabilities for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Net increase 1 Business combination Ending (In millions of Korean won) Non-life insurance General insurance ￦ 1,064,913 ￦ 503,828 ￦ — ￦ 1,568,741 Automobile insurance 1,623,846 274,026 — 1,897,872 Long-term insurance 25,006,078 1,356,401 — 26,362,479 Long-term investment contract 108,938 (2,085 ) — 106,853 Life insurance Pure endowment insurance 5,236,128 318,109 2,016,112 7,570,349 Death insurance 642,963 404,456 14,658,632 15,706,051 Endowment insurance 1,270,855 (156,688 ) 74,132 1,188,299 Group insurance and others 2 9,555 (2,238 ) 4,013 11,330 Others 3,407 (85 ) — 3,322 ￦ 34,966,683 ￦ 2,695,724 ￦ 16,752,889 ￦ 54,415,296 2021 Beginning Net increase 1 Ending (In millions of Korean won) Non-life insurance General insurance ￦ 1,568,741 ￦ 222,543 ￦ 1,791,284 Automobile insurance 1,897,872 127,693 2,025,565 Long-term insurance 26,362,479 1,373,257 27,735,736 Long-term investment contract 106,853 (75,772 ) 31,081 Life insurance Pure endowment insurance 7,570,349 436,999 8,007,348 Death insurance 15,706,051 810,366 16,516,417 Endowment insurance 1,188,299 (142,962 ) 1,045,337 Group insurance and others 2 11,330 (886 ) 10,444 Others 3,322 (598 ) 2,724 ￦ 54,415,296 ￦ 2,750,640 ￦ 57,165,936 1 Includes exchange differences effect and decrease in liabilities related to investment contracts. 2 Includes reserve for distribution of earnings to policyholders and reserve for loss compensation on participating insurance.
Summary of Assumptions and Basis for the Insurance Liability Adequacy Test	According to the revision of the Detailed Regulations on Supervision of Insurance Business, the criteria for the insurance liability adequacy test were changed, and the Group accounted for the change as a change in accounting policy because it provided reliable and more relevant information about current estimates of future cash flows. This change in accounting policy has no effect on the consolidated financial statements, but comparative notes have been restated.KB Insurance Co., Ltd. Assumptions and calculation basis for the insurance liability adequacy test of KB Insurance Co., Ltd. as of December 31, 2020 and 2021, are as follows: Assumptions (%) Calculation basis December 31, December 31, 2021 Long-term insurance Discount rate -3.98~23.96 -3.39~19.54 Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by director of the Financial Supervisory Service Expense ratio 6.46 6.25 Calculated using future expense plan based on the recent one-year experience statistics Lapse ratio 1.48~35.44 1.49~35.98 Calculated based on the recent five-year experience statistics Risk ratio 11.9~1,055.2 7.4~1,143.8 Calculated by ratio of insurance claim payments to risk premiums based on the recent seven-year experience statistics General insurance Lapse ratio 1.1 0.9 Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years Assumptions (%) Calculation basis December 31, December 31, 2021 Sales cost ratio 6.5 6.3 Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums) Maintenance cost ratio 10.7 10.5 Ratio of maintenance cost to earned premiums by type of contracts for the preceding year Claim survey cost ratio 4.7 4.7 Ratio of claim survey cost to insurance claim payments by type of contracts for the preceding three years Loss ratio 71.0 78.5 Ratio of final loss incurred to earned premiums by type of contracts for the preceding five years Automobile insurance Lapse ratio 4.6 4.7 Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years Sales cost ratio 8.1 7.6 Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums) Maintenance cost ratio 9.0 8.8 Ratio of maintenance cost to earned premiums by type of collaterals for the preceding year Claim survey cost ratio 8.4 8.1 Ratio of claim survey cost to insurance claim payments by type of collaterals for the preceding three years Loss ratio 78.2 78.2 Ratio of final loss incurred to earned premiums by type of collaterals for the preceding five years Assumptions and calculation basis for the insurance liability adequacy test of KB Life Insurance Co., Ltd. as of December 31, 2020 and 2021, are as follows: Assumptions (%) Calculation basis December 31, 2020 December 31, 2021 Lapse ratio 0~65.50 0~65.57 Ratio of canceled premiums to premiums by product group, method of payment, channel, and elapsed period, based on the recent five-year experience statistics Loss ratio 24~156 22~162 Ratio of number of accidents to the number of holding contracts, by collateral, gender, and elapsed period, based on the recent seven-year experience statistics Discount rate -3.62~23.48 -3.39~19.54 Estimated investment yield based on the interest rate scenario provided by the Financial Supervisory Service adjusted by risk spread Assumptions and calculation basis for the insurance liability adequacy test of Prudential Life Insurance Company of Korea Ltd. as of December 31, 2020 and 2021, are as follows: Assumptions (%) December 31, 2020 December 31, 2021 Calculation basis Discount rate -3.98~23.96 -3.39~19.54 Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by the Financial Supervisory Service Lapse ratio 2~28 1~26 Calculated based on the amount of insurance coverage by elapsed period based on the recent five-year experience statistics Risk ratio 21~312 28~545 Calculated by ratio of insurance claim payments to risk premiums by elapsed period based on the recent five-year experience statistics
Summary of Results of the Insurance Liability Adequacy Test	Results of the insurance liability adequacy test of KB Insurance Co., Ltd. as of December 31, 2020 and 2021, are as follows: December 31, 2020 Recognized Estimated adequate Surplus (shortfall) (In millions of Korean won) General insurance ￦ 461,227 ￦ 391,040 ￦ 70,187 Automobile insurance 1,363,104 1,290,439 72,665 Long-term insurance 20,892,077 13,671,990 7,220,087 ￦ 22,716,408 ￦ 15,353,469 ￦ 7,362,939 December 31, 2021 Recognized liabilities* Estimated adequate Surplus (shortfall) (In millions of Korean won) General insurance ￦ 465,812 ￦ 437,555 ￦ 28,257 Automobile insurance 1,401,462 1,322,026 79,436 Long-term insurance 21,812,939 14,277,162 7,535,777 ￦23,680,213 ￦ 16,036,743 ￦ 7,643,470 * In the case of long-term insurance, premium reserve and unearned premium reserve are recognized; the premium reserve is the amount of subtracting deferred acquisition costs and insurance contract loans from the net insurance premium reserve in accordance with Article 6-3 of the Regulations on Supervision of Insurance Business. The insurance liability adequacy test of KB Life Insurance Co., Ltd. is performed by contract type such as interest rate type and dividend type. Results of the insurance liability adequacy test as of December 31, 2020 and 2021, are as follows: December 31, 2020 Recognized liabilities Estimated adequate Surplus (shortfall) (In millions of Korean won) Fixed interest type Participating ￦ 30,447 ￦ 57,162 ￦ (26,715 ) Non-participating 395,766 66,380 329,386 Variable interest type Participating 970,376 1,010,383 (40,007 ) Non-participating 5,508,172 5,275,939 232,233 Variable type (26,685 ) (125,530 ) 98,845 Total ￦ 6,878,076 ￦ 6,284,334 ￦ 593,742 December 31, 2021 Recognized liabilities Estimated adequate Surplus (shortfall) (In millions of Korean won) Fixed interest type Participating ￦ 30,828 ￦ 51,443 ￦ (20,615 ) Non-participating 664,569 5,876 658,693 Variable interest type Participating 896,754 913,067 (16,313 ) Non-participating 5,754,214 5,263,775 490,439 Variable type (7,822 ) (101,418 ) 93,596 ￦ 7,338,543 ￦ 6,132,743 ￦ 1,205,800 The insurance liability adequacy test of Prudential Life Insurance Company of Korea Ltd. is performed by contract type such as interest rate type and dividend type. Results of the insurance liability adequacy test as of December 31, 2020 and 2021, are as follows: Surplus (shortfall) December 31, 2020 December 31, 2021 (In millions of Korean won) Fixed interest type Participating ￦ (14,701 ) ￦ (7,687 ) Non-participating (865,083 ) 787,200 Variable interest type Non-participating 100,825 128,963 Variable type 1,584,469 1,278,620 ￦ 805,510 ￦ 2,187,096 As a result of the liability adequacy test, the Group did not set additional reserve as it shows net surplus. As such, there was no amount recorded as a result of the liability adequacy test as of December 31, 2021.
Summary of Insurance Income and Expenses	Details of insurance income and insurance expenses for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Insurance income Premium income ￦ 11,173,367 ￦ 12,872,727 ￦ 14,684,383 Reinsurance income 850,871 823,500 990,437 Reversal of policy reserve 993 85 599 Separate account income 216,429 216,485 286,967 Income from changes in reinsurance assets 42,432 467,729 135,159 Other insurance income 33,090 6,114 10,313 12,317,182 14,386,640 16,107,858 Insurance expenses Insurance claims paid 5,046,772 5,264,829 5,777,899 Dividend expenses 9,902 11,661 14,038 Refunds of surrender value 2,870,543 3,286,150 4,032,209 Reinsurance expenses 1,018,007 1,127,304 1,163,056 Provision for policy reserve 1,547,264 2,709,903 2,761,735 Separate account expenses 139,810 113,703 112,180 Administration expenses 453,016 563,085 644,947 Amortization of deferred acquisition costs 679,279 767,633 819,154 Expenses from changes in reinsurance assets 314 163 — Claim survey expenses paid 52,123 58,873 60,234 Other insurance expenses 200,640 183,343 165,695 12,017,670 14,086,647 15,551,147 Net insurance income ￦ 299,512 ￦ 299,993 ￦ 556,711
Summary of Exposure to Insurance Price Risk	The Group’s exposure to insurance price risk as of December 31, 2020 and 2021, as follows: December 31, 2020 Direct risk premium Assumed risk Ceded risk Total (In millions of Korean won) General ￦ 1,088,791 ￦ 79,429 ￦ (663,750 ) ￦ 504,470 Automobile 2,491,412 — (21,433 ) 2,469,979 Long-term 2,803,532 — (415,439 ) 2,388,093 ￦ 6,383,735 ￦ 79,429 ￦ (1,100,622 ) ￦ 5,362,542 December 31, 2021 Direct risk premium Assumed risk Ceded risk Total (In millions of Korean won) General ￦ 1,161,427 ￦ 93,191 ￦ (630,231 ) ￦ 624,387 Automobile 2,538,277 — (13,683 ) 2,524,594 Long-term 3,128,821 — (462,261 ) 2,666,560 ￦ 6,828,525 ￦ 93,191 ￦ (1,106,175 ) ￦ 5,815,541
Summary of Loss Development Tables for Non-Life Insurance	Claims development tables The Group verifies and evaluates the adequacy of reserve for outstanding claims for general, automobile, and long-term insurance with two or more methods, including paid loss development trend and incurred loss development trend. If the individually estimated claims are insufficient, the Group recognizes additional reserves. Claims development tables as of December 31, 2020 and 2021, are as follows: <2020> General Insurance Development year Accident year After 1 year After 2 years After 3 years After 4 years After 5 years (In millions of Korean won) Estimate of gross ultimate claims (A) 2016.1.1 ~ 2016.12.31 ￦ 145,618 ￦ 167,818 ￦ 171,206 ￦ 178,265 ￦ 180,160 2017.1.1 ~ 2017.12.31 168,409 200,699 204,368 206,201 — 2018.1.1 ~ 2018.12.31 200,968 241,474 246,871 — — 2019.1.1 ~ 2019.12.31 219,881 263,849 — — — 2020.1.1 ~ 2020.12.31 232,622 — — — — 967,498 873,840 622,445 384,466 180,160 Gross cumulative claim payments (B) 2016.1.1 ~ 2016.12.31 108,098 151,282 162,059 170,353 175,063 2017.1.1 ~ 2017.12.31 132,430 184,333 193,780 199,225 — 2018.1.1 ~ 2018.12.31 153,770 217,955 235,900 — — 2019.1.1 ~ 2019.12.31 185,645 246,397 — — — 2020.1.1 ~ 2020.12.31 167,129 — — — — 747,072 799,967 591,739 369,578 175,063 Difference (A-B) ￦ 220,426 ￦ 73,873 ￦ 30,706 ￦ 14,888 ￦ 5,097 Automobile Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2014.1.1 ~ 2014.12.31 ￦ 1,174,611 ￦ 1,193,833 ￦ 1,205,524 ￦ 1,212,025 ￦ 1,212,162 ￦ 1,214,524 ￦ 1,217,006 2015.1.1 ~ 2015.12.31 1,227,106 1,245,780 1,256,058 1,263,044 1,267,142 1,271,001 — 2016.1.1 ~ 2016.12.31 1,276,939 1,281,381 1,287,728 1,294,735 1,299,964 — — 2017.1.1 ~ 2017.12.31 1,342,998 1,348,828 1,358,867 1,368,016 — — — 2018.1.1 ~ 2018.12.31 1,468,784 1,471,807 1,481,509 — — — — 2019.1.1 ~ 2019.12.31 1,591,793 1,620,609 — — — — — 2020.1.1 ~ 2020.12.31 1,624,341 — — — — — — 9,706,572 8,162,238 6,589,686 5,137,820 3,779,268 2,485,525 1,217,006 Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Gross cumulative claim payments (B) 2014.1.1 ~ 2014.12.31 969,211 1,150,462 1,180,953 1,196,387 1,204,580 1,208,421 1,210,632 2015.1.1 ~ 2015.12.31 1,020,975 1,198,241 1,228,357 1,245,779 1,254,187 1,261,995 — 2016.1.1 ~ 2016.12.31 1,052,830 1,235,656 1,264,651 1,282,346 1,288,754 — — 2017.1.1 ~ 2017.12.31 1,104,158 1,306,235 1,335,962 1,350,174 — — — 2018.1.1 ~ 2018.12.31 1,224,820 1,428,973 1,456,532 — — — — 2019.1.1 ~ 2019.12.31 1,332,849 1,570,194 — — — — — 2020.1.1 ~ 2020.12.31 1,353,799 — — — — — — 8,058,642 7,889,761 6,466,455 5,074,686 3,747,521 2,470,416 1,210,632 Difference (A-B) ￦ 1,647,930 ￦ 272,477 ￦ 123,231 ￦ 63,134 ￦ 31,747 ￦ 15,109 ￦ 6,374 Long-term Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2014.1.1 ~ 2014.12.31 ￦ 789,088 ￦ 1,083,049 ￦ 1,114,820 ￦ 1,119,206 ￦ 1,122,191 ￦ 1,123,240 ￦ 1,124,628 2015.1.1 ~ 2015.12.31 885,476 1,219,394 1,256,051 1,266,881 1,270,967 1,273,615 — 2016.1.1 ~ 2016.12.31 1,064,744 1,437,573 1,485,839 1,500,403 1,506,889 — — 2017.1.1 ~ 2017.12.31 1,184,224 1,614,903 1,670,929 1,689,768 — — — 2018.1.1 ~ 2018.12.31 1,372,706 1,881,046 1,941,497 — — — — 2019.1.1 ~ 2019.12.31 1,626,481 2,229,830 — — — — — 2020.1.1 ~ 2020.12.31 1,818,316 — — — — — — 8,741,035 9,465,795 7,469,136 5,576,258 3,900,047 2,396,855 1,124,628 Gross cumulative claim payments (B) 2014.1.1 ~ 2014.12.31 744,944 1,065,792 1,104,468 1,114,341 1,119,531 1,122,378 1,123,868 2015.1.1 ~ 2015.12.31 836,471 1,205,130 1,248,475 1,262,528 1,269,557 1,272,648 — 2016.1.1 ~ 2016.12.31 1,017,243 1,424,948 1,477,415 1,496,556 1,503,841 — — 2017.1.1 ~ 2017.12.31 1,130,868 1,599,227 1,662,978 1,683,997 — — — 2018.1.1 ~ 2018.12.31 1,319,613 1,868,434 1,933,543 — — — — 2019.1.1 ~ 2019.12.31 1,574,696 2,211,717 — — — — — 2020.1.1 ~ 2020.12.31 1,749,647 — — — — — — 8,373,482 9,375,248 7,426,879 5,557,422 3,892,929 2,395,026 1,123,868 Difference (A-B) ￦ 367,553 ￦ 90,547 ￦ 42,257 ￦ 18,836 ￦ 7,118 ￦ 1,829 ￦ 760 <2021> General Insurance Development year Accident year After 1 year After 2 years After 3 years After 4 years After 5 years (In millions of Korean won) Estimate of gross ultimate claims (A) 2017.1.1 ~ 2017.12.31 ￦ 169,234 ￦ 201,406 ￦ 205,075 ￦ 206,856 ￦ 207,252 2018.1.1 ~ 2018.12.31 200,968 241,471 246,499 250,083 — 2019.1.1 ~ 2019.12.31 219,419 263,105 267,687 — — 2020.1.1 ~ 2020.12.31 232,622 273,531 — — — 2021.1.1 ~ 2021.12.31 290,480 — — — — 1,112,723 979,513 719,261 456,939 207,252 Gross cumulative claim payments (B) 2017.1.1 ~ 2017.12.31 133,254 185,107 194,511 199,926 202,548 2018.1.1 ~ 2018.12.31 153,770 217,955 235,900 240,171 — 2019.1.1 ~ 2019.12.31 185,645 246,397 258,465 — — 2020.1.1 ~ 2020.12.31 167,129 244,074 — — — 2021.1.1 ~ 2021.12.31 236,265 — — — — 876,063 893,533 688,876 440,097 202,548 Difference(A-B) ￦ 236,660 ￦ 85,980 ￦ 30,385 ￦ 16,842 ￦ 4,704 Automobile Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2015.1.1 ~ 2015.12.31 ￦ 1,227,107 ￦ 1,245,781 ￦ 1,256,059 ￦ 1,263,044 ￦ 1,267,142 ￦ 1,271,000 ￦ 1,282,673 2016.1.1 ~ 2016.12.31 1,276,939 1,281,381 1,287,728 1,294,735 1,299,964 1,309,221 — 2017.1.1 ~ 2017.12.31 1,342,998 1,348,828 1,358,867 1,368,016 1,371,619 — — 2018.1.1 ~ 2018.12.31 1,468,784 1,471,807 1,481,509 1,488,890 — — — 2019.1.1 ~ 2019.12.31 1,591,793 1,620,609 1,635,704 — — — — 2020.1.1 ~ 2020.12.31 1,624,341 1,632,626 — — — — — 2021.1.1 ~ 2021.12.31 1,750,508 — — — — — — 10,282,470 8,601,032 7,019,867 5,414,685 3,938,725 2,580,221 1,282,673 Gross cumulative claim payments(B) 2015.1.1 ~ 2015.12.31 1,020,975 1,198,240 1,228,357 1,245,780 1,254,186 1,261,995 1,264,247 2016.1.1 ~ 2016.12.31 1,052,830 1,235,656 1,264,651 1,282,346 1,288,754 1,291,380 — 2017.1.1 ~ 2017.12.31 1,104,158 1,306,235 1,335,962 1,350,174 1,357,903 — — 2018.1.1 ~ 2018.12.31 1,224,820 1,428,973 1,456,532 1,471,379 — — — 2019.1.1 ~ 2019.12.31 1,332,849 1,570,194 1,598,956 — — — — 2020.1.1 ~ 2020.12.31 1,353,799 1,570,730 — — — — — 2021.1.1 ~ 2021.12.31 1,445,877 — — — — — — 8,535,308 8,310,028 6,884,458 5,349,679 3,900,843 2,553,375 1,264,247 Difference(A-B) ￦ 1,747,162 ￦ 291,004 ￦ 135,409 ￦ 65,006 ￦ 37,882 ￦ 26,846 ￦ 18,426 Long-term Insurance Development year Accident year After 1 After 2 After 3 After 4 After 5 After 6 After 7 (In millions of Korean won) Estimate of gross ultimate claims (A) 2015.1.1 ~ 2015.12.31 ￦ 885,476 ￦ 1,219,394 ￦ 1,256,051 ￦ 1,266,881 ￦ 1,270,967 ￦ 1,273,615 ￦ 1,275,520 2016.1.1 ~ 2016.12.31 1,064,744 1,437,574 1,485,839 1,500,403 1,506,889 1,510,197 — 2017.1.1 ~ 2017.12.31 1,184,224 1,614,903 1,670,929 1,689,768 1,695,477 — — 2018.1.1 ~ 2018.12.31 1,372,706 1,881,046 1,941,497 1,965,983 — — — 2019.1.1 ~ 2019.12.31 1,626,481 2,229,830 2,297,861 — — — — 2020.1.1 ~ 2020.12.31 1,818,316 2,442,633 — — — — — 2021.1.1 ~ 2021.12.31 2,124,582 — — — — — — 10,076,529 10,825,380 8,652,177 6,423,035 4,473,333 2,783,812 1,275,520 Gross cumulative claim payments(B) 2015.1.1 ~ 2015.12.31 836,472 1,205,130 1,248,475 1,262,528 1,269,557 1,272,648 1,274,908 2016.1.1 ~ 2016.12.31 1,017,243 1,424,948 1,477,415 1,496,556 1,503,841 1,507,284 — 2017.1.1 ~ 2017.12.31 1,130,868 1,599,227 1,662,978 1,683,997 1,692,323 — — 2018.1.1 ~ 2018.12.31 1,319,613 1,868,434 1,933,543 1,958,256 — — — 2019.1.1 ~ 2019.12.31 1,574,696 2,211,717 2,288,023 — — — — 2020.1.1 ~ 2020.12.31 1,749,647 2,426,351 — — — — — 2021.1.1 ~ 2021.12.31 2,057,154 — — — — — — 9,685,693 10,735,807 8,610,434 6,401,337 4,465,721 2,779,932 1,274,908 Difference(A-B) ￦ 390,836 ￦ 89,573 ￦ 41,743 ￦ 21,698 ￦ 7,612 ￦ 3,880 ￦ 612
Summary of Sensitivity to Insurance Risk	38.5.6 Sensitivity analysis of insurance risk The Group manages insurance risk by performing sensitivity analysis based on lapse ratio, loss ratio, expense ratio, discount rate, and others which are considered to have significant influence on future cash flow, timing, and uncertainty. Sensitivity analysis of insurance liabilities was conducted only in the unfavorable direction where additional insurance liabilities could be reserved as the surplus was sufficient as a result of the insurance liability adequacy test. December 31, 2020 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 351,205 ￦ — ￦ — ￦ — Loss ratio +10 % 5,203,896 — — — Expense ratio +10 % 388,406 — — — Discount rate -0.5 %p 2,097,400 — — — December 31, 2021 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 337,969 ￦ — ￦ — ￦ — Loss ratio +10 % 6,065,429 — — — Expense ratio +10 % 503,132 — — — Discount rate -0.5 %p 1,985,421 — — — 38.7.7 Sensitivity analysis of insurance risk The Group manages insurance risk by performing sensitivity analysis based on lapse ratio, claim ratio, expense ratio, discount rate, and others which are considered to have significant influence on future cash flow, timing, and uncertainty. Sensitivity analysis of insurance liabilities was conducted only in the unfavorable direction where additional insurance liabilities could be reserved as the surplus was sufficient as a result of the insurance liability adequacy test. December 31, 2020 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 158,219 ￦ — ￦ — ￦ — Claim ratio +10 % 719,689 — — — Expense ratio +10 % 213,675 — — — Discount rate -0.5 %p 1,687,116 — — — December 31, 2021 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 114,427 ￦ — ￦ — ￦ — Claim ratio +10 % 571,446 — — — Expense ratio +10 % 157,924 — — — Discount rate -0.5 %p 1,563,571 — — — 38.6.6 Sensitivity analysis of insurance risk The Group manages insurance risk by performing sensitivity analysis based on lapse ratio, claim ratio, expense ratio, discount rate, and others which are considered to have significant influence on future cash flow, timing, and uncertainty. Sensitivity analysis of insurance liabilities was conducted only in the unfavorable direction where additional insurance liabilities could be reserved as the surplus was sufficient as a result of the insurance liability adequacy test. December 31, 2020 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 51,370 ￦ — ￦ — ￦ — Claim ratio +10 % 31,020 — — — Expense ratio +10 % 33,616 — — — Discount rate -0.5 %p 511,913 — — — December 31, 2021 Assumption change Effect on Base amount of LAT Insurance liabilities Profit before tax Equity (In millions of Korean won) Lapse ratio +10 % ￦ 82,811 ￦ — ￦ — ￦ — Claim ratio +10 % 50,899 — — — Expense ratio +10 % 53,511 — — — Discount rate -0.5 %p 482,638 — — —
Summary of Maturity Structure of Premium Reserve Related to Liquidity Risk	Maturity structure of premium reserve as of December 31, 2020 and 2021, as follows: December 31, 2020* Up to 1 year 1~5 years 5~10 years 10~20 years Over 20 years Total (In millions of Korean won) Long-term insurance non-participating: Fixed interest type ￦ 70,782 ￦ 191,570 ￦ 78,092 ￦ 51,216 ￦ 175,387 ￦ 567,047 Variable interest type 663,210 2,304,298 1,937,621 845,404 14,716,753 20,467,286 733,992 2,495,868 2,015,713 896,620 14,892,140 21,034,333 Annuity: Fixed interest type 5 717 2,203 3,817 738 7,480 Variable interest type 242 83,568 390,516 1,301,383 2,195,244 3,970,953 247 84,285 392,719 1,305,200 2,195,982 3,978,433 Total: Fixed interest type 70,787 192,287 80,295 55,033 176,125 574,527 Variable interest type 663,452 2,387,866 2,328,137 2,146,787 16,911,997 24,438,239 ￦ 734,239 ￦ 2,580,153 ￦ 2,408,432 ￦ 2,201,820 ￦ 17,088,122 ￦ 25,012,766 December 31, 2021* Up to 1 year 1~5 years 5~10 years 10~20 years Over 20 years Total (In millions of Korean won) Long-term insurance non-participating: Fixed interest type ￦ 121,988 ￦ 64,730 ￦ 77,880 ￦ 59,042 ￦ 324,259 ￦ 647,899 Variable interest type 959,348 1,958,267 1,536,690 919,726 16,123,312 21,497,343 1,081,336 2,022,997 1,614,570 978,768 16,447,571 22,145,242 Annuity: Fixed interest type — 820 2,134 3,813 532 7,299 Variable interest type 252 103,419 407,556 1,324,916 2,121,076 3,957,219 252 104,239 409,690 1,328,729 2,121,608 3,964,518 Total: Fixed interest type 121,988 65,550 80,014 62,855 324,791 655,198 Variable interest type 959,600 2,061,686 1,944,246 2,244,642 18,244,388 25,454,562 ￦ 1,081,588 ￦ 2,127,236 ￦ 2,024,260 ￦ 2,307,497 ￦ 18,569,179 ￦ 26,109,760 * Includes long-term investment contracts liabilities classified as investment contracts amounting to ￦ 106,853 31,081 38.6.5 Maturity structure of premium reserve and unearned premium reserve as of December 31, 2020 and 2021, as follows: December 31, 2020 Up to 3 years 3-5 years 5-10 years 10-15 years 15-20 years Over 20 years Total (In millions of Korean won) Premium reserve ￦ 739,485 ￦ 350,639 ￦ 605,931 ￦ 412,563 ￦ 451,074 ￦ 4,770,046 ￦ 7,329,738 Unearned premium reserve 162 — 23 1 — 6,291 6,477 December 31, 2021 Up to 3 years 3-5 years 5-10 years 10-15 years 15-20 years Over 20 years Total (In millions of Korean won) Premium reserve ￦ 651,638 ￦ 285,623 ￦ 578,102 ￦ 386,515 ￦ 545,270 ￦ 5,403,252 ￦ 7,850,400 Unearned premium reserve 156 — 24 — — 5,763 5,943
Summary of Credit Risk of Insurance Contracts	Concentration and credit ratings for top three reinsurance companies as of December 31, 2021, are as follows: Reinsurance company Ratio Credit rating KOREAN RE 38.65 % AA MUNICH RE 5.75 % AAA ALLIANZGLOBAL 5.67 % AAA Exposures to credit risk related to reinsurance as of December 31, 2020 and 2021 as follows: December 31, December 31, (In millions of Korean won) Reinsurance assets 1 ￦ 1,199,354 ￦ 1,342,615 Receivables from reinsurers 2 252,064 377,619 ￦ 1,451,418 ￦ 1,720,234 1 Net carrying amount after impairment losses 2 Net carrying amount after allowances for credit losses
Summary of Exposure to Interest Rate Risk of Insurance Contract	Exposure to interest rate risk December 31, 2020 December 31, 2021 (In millions of Korean won) Interest-bearing liabilities Fixed interest rate type ￦ 501,147 ￦ 489,399 Variable interest rate type 23,213,667 24,246,760 ￦ 23,714,814 ￦ 24,736,159 Interest-bearing assets Due from financial institutions measured at amortized cost and cash equivalents ￦ 160,249 ￦ 81,806 Financial assets at fair value through profit or loss 3,823,603 3,863,978 Financial assets at fair value through other comprehensive income 3,983,567 4,488,443 Securities measured at amortized cost 8,700,196 8,514,272 Loans measured at amortized cost 6,271,484 6,433,839 ￦ 22,939,099 ￦ 23,382,338
Summary of Maximum Exposures to Insurance Price Risk	Maximum exposures to insurance price risk as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Before reinsurance After reinsurance Before reinsurance After reinsurance (In millions of Korean won) Death ￦ 13,509 ￦ 10,409 ￦ 14,977 ￦ 11,976 Disability 672 349 586 296 Hospitalization 1,213 787 1,124 730 Operation and diagnosis 4,809 1,783 5,088 1,110 Actual medical expense 1,095 23 1,194 262 Others 1,045 474 972 316 ￦ 22,343 ￦ 13,825 ￦ 23,941 ￦ 14,690 Maximum exposures to insurance price risk as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Before reinsurance After reinsurance Before reinsurance After reinsurance (In millions of Korean won) Death ￦ 244,975 ￦ 240,121 ￦ 253,325 ￦ 250,045 Disability 10,485 9,964 10,331 10,230 Hospitalization 33,321 33,321 34,194 34,194 Operation and diagnosis 77,820 76,530 81,429 79,850 ￦ 366,601 ￦ 359,936 ￦ 379,279 ￦ 374,319
Summary of Exposure of Market Risk Arising from Embedded Derivatives Included in Host Insurance Contracts	Exposures to market risk arising from embedded derivatives included in host insurance contracts as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 Policyholders’ Guarantee reserve Policyholders’ reserve* Guarantee reserve (In millions of Korean won) Variable annuity ￦ 490,551 ￦ 2,782 ￦ 611,283 ￦ 3,014 Variable universal 90,337 2,515 78,689 2,768 Variable saving 720,197 504 556,196 393 ￦ 1,301,085 ￦ 5,801 ￦ 1,246,168 ￦ 6,175 * Excludes the amount of the lapsed insurance reserve.
Summary of ceded reinsurance Permiums by credit rating of reinsurer	Details of the ceded reinsurance premiums by credit rating of reinsurer for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 Ceded reinsurance premium Proportion (%) Ceded reinsurance premium Proportion (%) (In millions of Korean won) AA- or higher ￦ 6,444 100.00 ￦ 5,223 100.00 A+ ~ A- — — — — BBB+ or lower — — — — Others — — — — ￦ 6,444 100.00 ￦ 5,223 100.00
Summary of Maturity Structure of Premium Reserve	Maturity structure of premium reserve and unearned premium reserve as of December 31, 2020 and 2021, are as follows: December 31, 2020 Up to 3 years 3-5 years 5-10 years 10-15 years 15-20 years Over 20 years Total (In millions of Korean won) Premium reserve ￦ 48,807 ￦ 37,502 ￦ 139,973 ￦ 215,470 ￦ 418,684 ￦ 12,376,772 ￦ 13,237,208 Unearned premium 31 16 58 51 77 3,633 3,866 December 31, 2021 Up to 3 years 3-5 years 5-10 years 10-15 years 15-20 years Over 20 years Total (In millions of Korean won) Premium reserve ￦ 39,578 ￦ 40,894 ￦ 154,062 ￦ 237,021 ￦ 528,373 ￦ 13,122,197 ￦ 14,122,125 Unearned premium 31 15 50 51 65 4,092 4,304
Summary of Financial Assets Subject to the Overlay Approach	38.8.1 Details of financial assets subject to the overlay approach as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Financial assets at fair value through profit or loss: Due from financial institutions ￦ 70,312 ￦ 80,179 Debt securities 7,363,457 8,023,999 Equity securities 305,337 239,426 ￦ 7,739,106 ￦ 8,343,604
Summary of Changes of Net Gains (Losses) on Overlay Adjustment	38.8.2 Changes in net gains on overlay adjustment for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 (In millions of Korean won) Beginning ￦ 187,077 ￦ 339,202 Recognition of other comprehensive income due to acquisition and valuation 177,500 185,906 Reclassification to profit or loss due to disposal (25,375 ) (65,624 ) Ending ￦ 339,202 ￦ 459,484

Statement of Cash Flows (Tables

Statement of Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2021
Statement of cash flows [abstract]
Summary Of Cash And Cash Equivalents Explanatory	39.1 Details of cash and cash equivalents as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Cash ￦ 2,560,970 ￦ 2,496,941 Checks issued by other banks 327,781 150,047 Due from the Bank of Korea 12,340,532 17,579,643 Due from other financial institutions 10,379,559 10,782,743 25,608,842 31,009,374 Due from financial institutions measured at fair value through profit or loss 100,094 200,743 25,708,936 31,210,117 Deduction: Restricted due from financial institutions (15,303,363 ) (20,754,706 ) Due from financial institutions with original maturities over three months (1,720,481 ) (1,346,951 ) (17,023,844 ) (22,101,657 ) ￦ 8,685,092 ￦ 9,108,460
Summary of others significant noncash transactions	39.2 Significant non-cash transactions for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Write-offs of loans ￦ 1,188,584 ￦ 1,283,071 ￦ 1,086,296 Changes in financial investments due to debt-for-equity swap 104,815 13,820 327 Changes in accumulated other comprehensive income from valuation of financial instruments at fair value through other comprehensive income 35,490 496,159 507,175 Changes in accumulated other comprehensive income from valuation of investments in associates 7,695 (6,978 ) 165 Reclassification to assets of a disposal group held for sale — — 171,749
Summary of cash flow supplemental disclosures table	39.3 Cash inflows and outflows from income tax, interest, and dividends for the years ended December 31, 2019, 2020 and 2021, are as follows: Activities 2019 2020 2021 (In millions of Korean won) Income tax paid Operating ￦ 1,223,084 ￦ 1,119,252 ￦ 1,586,750 Interest received Operating 14,936,705 14,986,532 15,152,796 Interest paid Operating 5,365,595 5,266,158 4,062,469 Dividends received Operating 185,846 187,699 290,089 Dividends paid Financing 766,249 883,952 1,053,416
Summary of reconciliation of liabilities arising from financing activities	39.4 Changes in liabilities arising from financing activities for the years ended December 31, 2020 and 2021, are as follows: 2020 Non-cash changes Beginning Net cash flows Acquisition Exchange Changes in fair value Subsidiaries Others Ending (In millions of Korean won) Derivatives held for hedging * ￦ 187,101 ￦ (16,202 ) ￦ — ￦ (102,347 ) ￦ 10,553 ￦ 1,166 ￦ (137,467 ) ￦ (57,196 ) Borrowings 88,754,443 22,627,875 — (217,461 ) (591,619 ) 2,131,517 (116,912 ) 112,587,843 Due to trust accounts 5,216,460 2,326,495 — — — — — 7,542,955 Non-controlling interests 585,407 (25,658 ) — 250,904 — — 47,130 857,783 Others 868,556 (63,065 ) 236,860 11 — — (23,287 ) 1,019,075 ￦ 95,611,967 ￦ 24,849,445 ￦ 236,860 ￦ (68,893 ) ￦ (581,066 ) ￦ 2,132,683 ￦ (230,536 ) ￦ 121,950,460 2021 Non-cash changes Beginning Net cash flows Acquisition Exchange Changes in fair value Subsidiaries Others Ending (In millions of Korean won) Derivatives held for hedging * ￦ (57,196 ) ￦ 5,870 ￦ — ￦ 246,352 ￦ (70,225 ) ￦ — ￦ (150,084 ) ￦ (25,283 ) Borrowings 112,587,843 11,579,036 — 630,913 (115,440 ) (329,512 ) (10,278 ) 124,342,562 Due to trust accounts 7,542,955 (509,106 ) — — — — — 7,033,849 Non-controlling interests 857,783 (24,145 ) — — — 1,994 (2,294 ) 833,338 Others 1,019,075 (319,074 ) 166,336 119 — — 119,398 985,854 ￦ 121,950,460 ￦ 10,732,581 ￦ 166,336 ￦ 877,384 ￦ (185,665 ) ￦ (327,518 ) ￦ (43,258 ) ￦ 133,170,320 * Derivatives held for hedging purposes are the net amount after offsetting liabilities and assets.

Contingent Liabilities and Co_2

Contingent Liabilities and Commitments (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of contingent liabilities [abstract]
Summary Of Guarantee Obligations	40.1 Details of acceptances and guarantees as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Confirmed acceptances and guarantees Confirmed acceptances and guarantees in Korean won: Acceptances and guarantees for KB purchasing loan ￦ 144,457 ￦ 136,914 Others 1,048,848 817,470 1,193,305 954,384 Confirmed acceptances and guarantees in foreign currencies: Acceptances of letter of credit 221,422 523,037 Letter of guarantees 45,693 83,089 Bid bond 72,037 18,874 Performance bond 703,826 855,247 Refund guarantees 801,445 874,173 Others 3,072,099 2,505,353 4,916,522 4,859,773 Financial guarantee contracts: Acceptances and guarantees for issuance of debentures 10,040 5,040 Acceptances and guarantees for mortgage 89,302 51,053 Overseas debt guarantees 410,470 428,109 International financing guarantees in foreign currencies 197,097 132,114 Others 50,950 50,950 757,859 667,266 6,867,686 6,481,423 Unconfirmed acceptances and guarantees Guarantees of letter of credit 2,094,989 3,551,767 Refund guarantees 344,112 833,765 2,439,101 4,385,532 ￦ 9,306,787 ￦ 10,866,955
Summary Of Credit Risk Exposure Of Payment Gurantees Explanatory	40.2 Credit qualities of acceptances and guarantees as of December 31, 2020 and 2021, are as follows: December 31, 2020 12-month Lifetime expected credit Total Non-impaired Impaired (In millions of Korean won) Confirmed acceptances and guarantees Grade 1 ￦ 4,377,798 ￦ 1,119 ￦ — ￦ 4,378,917 Grade 2 2,269,455 47,438 — 2,316,893 Grade 3 27,588 85,321 — 112,909 Grade 4 14,925 33,440 501 48,866 Grade 5 — 453 9,648 10,101 6,689,766 167,771 10,149 6,867,686 Unconfirmed acceptances and guarantees Grade 1 1,422,528 771 — 1,423,299 Grade 2 912,209 28,506 — 940,715 Grade 3 11,399 23,069 — 34,468 Grade 4 2,369 29,934 — 32,303 Grade 5 — 589 7,727 8,316 2,348,505 82,869 7,727 2,439,101 ￦ 9,038,271 ￦ 250,640 ￦ 17,876 ￦ 9,306,787 December 31, 2021 12-month Lifetime expected credit Total Non-impaired Impaired (In millions of Korean won) Confirmed acceptances and guarantees Grade 1 ￦ 4,532,747 ￦ 838 ￦ — ￦ 4,533,585 Grade 2 1,594,714 32,567 — 1,627,281 Grade 3 105,691 46,174 — 151,865 Grade 4 7,722 149,785 214 157,721 Grade 5 — 774 10,197 10,971 6,240,874 230,138 10,411 6,481,423 Unconfirmed acceptances and guarantees Grade 1 3,083,636 3,391 — 3,087,027 Grade 2 998,204 39,224 — 1,037,428 Grade 3 12,039 34,797 — 46,836 Grade 4 11,925 195,794 — 207,719 Grade 5 — 138 6,384 6,522 4,105,804 273,344 6,384 4,385,532 ￦ 10,346,678 ￦ 503,482 ￦ 16,795 ￦ 10,866,955
Summary Of Acceptance and Guarantees By Counterparty	40.3 Classifications of acceptances and guarantees by counterparty as of December 31, 2020 and 2021, are as follows: December 31, 2020 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Large companies ￦ 5,538,003 ￦ 1,770,235 ￦ 7,308,238 78.53 Small and medium-sized companies 695,860 459,487 1,155,347 12.41 Public sector and others 633,823 209,379 843,202 9.06 ￦ 6,867,686 ￦ 2,439,101 ￦ 9,306,787 100.00 December 31, 2021 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Large companies ￦ 5,431,921 ￦ 3,377,150 ￦ 8,809,071 81.06 Small and medium-sized companies 820,327 657,073 1,477,400 13.60 Public sector and others 229,175 351,309 580,484 5.34 ￦ 6,481,423 ￦ 4,385,532 ￦ 10,866,955 100.00
Summary Of Acceptance And Guarantees By Industry	40.4 Classifications of acceptances and guarantees by industry as of December 31, 2020 and 2021, are as follows: December 31, 2020 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Financial institutions ￦ 632,947 ￦ 5,871 ￦ 638,818 6.86 Manufacturing 2,992,319 1,285,530 4,277,849 45.96 Service 920,352 89,457 1,009,809 10.85 Wholesale and retail 1,086,772 891,619 1,978,391 21.26 Construction 411,601 14,488 426,089 4.58 Public sector 104,925 103,285 208,210 2.24 Others 718,770 48,851 767,621 8.25 ￦ 6,867,686 ￦ 2,439,101 ￦ 9,306,787 100.00 December 31, 2021 Confirmed Unconfirmed Total Proportion (In millions of Korean won) Financial institutions ￦ 385,761 ￦ 10,114 ￦ 395,875 3.64 Manufacturing 2,742,224 2,979,232 5,721,456 52.65 Service 676,440 38,920 715,360 6.58 Wholesale and retail 1,603,085 999,416 2,602,501 23.95 Construction 317,946 38,260 356,206 3.28 Public sector 28,257 99,841 128,098 1.18 Others 727,710 219,749 947,459 8.72 ￦ 6,481,423 ￦ 4,385,532 ￦ 10,866,955 100.00
Summary Of Commitments Explanatory	40.5 Details of commitments as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won) Commitments Corporate loan commitments ￦ 40,253,100 ￦ 45,767,502 Retail loan commitments 46,450,857 47,080,416 Credit line of credit cards 65,325,863 70,534,719 Purchase of other securities 7,104,163 6,835,506 159,133,983 170,218,143 Financial guarantee contracts Credit line 3,522,809 5,729,798 Purchase of securities 683,800 495,400 4,206,609 6,225,198 ￦ 163,340,592 ￦ 176,443,341
Summary of Other Matters (Including Litigation)	40.6 Other Matters (including litigation) a) The Group has 126 pending lawsuits as a plaintiff (excluding simple lawsuits related to the collection or management of loans), with aggregate claims amount of ￦578,033 million, and 264 pending lawsuits as a defendant (excluding simple lawsuits related to the collection or management of loans) with aggregate claims amount of ￦533,573 million, which arose in the normal course of the business, as of December 31, 2021. Details of major pending lawsuits in which the Group is a defendant are as follows: (In number of cases, in millions of Korean won) Company Lawsuits No. of Amount Description of the lawsuits Status of the lawsuits Kookmin Bank Request for a return of redemption amount 1 ￦ 48,068 Kookmin Bank invested the assets entrusted by OO Asset Management and OO Investment Trust Management in the Fairfield Sentry Limited, and Fairfield Sentry Limited reinvested the assets in Bernard L. Madoff Investment Securities LLC managed by Bernard Madoff (Bernard L. Madoff Investment Securities LLC is in the liquidation process due to Ponzi scheme fraud-related losses). Bankruptcy trustee of Bernard L. Madoff Investment Securities LLC filed a lawsuit against Kookmin Bank seeking to return the amount of redemptions received by Kookmin Bank through Fairfield Sentry Limited. Application for dismissal by the defendant has been denied, and further proceedings are scheduled. [Related litigation is in progress at the New York Southern District Federal Bankruptcy Court (10-3777) at the written complaint review stage] Company Lawsuits No. of Amount Description of the lawsuits Status of the lawsuits Confirm the absence of debt 1 96,200 Galamat-Art LLP is a joint guarantor of the PF loan for the ‘Kazakhstan Almaty City Complex Development Project’ in which Kookmin Bank Co., Ltd. participated as a lender. OO Bank, the agent bank of the lending group, filed a provisional seizure and a lawsuit on the merits of the guarantee debt to the local court against Galamat-Art LLP. And Galamat-Art LLP filed a counterclaim against the lenders, including Kookmin Bank, to confirm the absence of debt denying the joint guarantee obligation. Decision in the first trial on December 29, 2021. Won both lawsuits on the merits and counterclaim. Galamat-Art LLP lodged an appeal. KB Securities Co., Ltd. Request for a return of transaction amount (Australian fund) 1 100,000 The plaintiffs OOOO Securities and OOOO Life Insurance filed lawsuits, claiming that the KB Securities Co., Ltd. provided false information on major matters in the product description while selling JB Australia NDIS Private Fund No.1 (on April 25, 2019, plaintiffs invested ￦50 billion each) (a) (Primary claim) requesting KB Securities Co., Ltd. to return unjust enrichment of ￦100 billion for cancelation of sales contracts of beneficiary certificates due to an error or termination of the contract due to default, (b) (Secondary claim) requesting for compensation for damages in investments amounting to ￦100 billion due to violation of the investor protection obligation and fraudulent transactions of KB Securities Co., Ltd. and OOO Asset Management. First trial is in progress (The 4th pleading is scheduled for March 22, 2022). b) Kookmin Bank has entered into an agreement with PT Bosowa Corporindo, a major shareholder of PT Bank KB Bukopin Tbk. Under this agreement, Kookmin Bank and PT Bosowa Corporindo have a right of first refusal and a tag-along right. In addition, Kookmin Bank can exercise its drag-along right for two years from the time three years have elapsed since the acquisition date (July 27, 2018) in certain cases, such as violation of the agreement between shareholders. c) In June 2013, KB Kookmin Card Co., Ltd. had an accident in which cardholders’ personal information was stolen (hereinafter referred to as “accident”) due to illegal activities by employees of personal credit information company in charge of development of the system upgrading to prevent fraudulent use of credit card. As a result, KB Kookmin Card Co., Ltd. was notified by the Financial Services Commission of the suspension of some new business for 3 months as of February 16, 2014. In respect of the accident, the Group faces 2 legal claims filed as a defendant, with an aggregate claim amount of ￦108 million as of December 31, 2020 and 2021. The Group takes out the personal information protection liability insurance as of December 31, 2021. d) As of December 31, 2021, the Group is not able to dispose, transfer or collateralize the shares or rights of shares of KB KOLAO Leasing Co., Ltd. (“joint-venture lease company”) to a third party without the written consent of both KB Kookmin Card Co., Ltd. and LVMC Holdings (formerly Kolao Holdings), for five years (the restriction period for the disposal of its equity) after February 8, 2017. However, KB Kookmin Card Co., Ltd. and KB Capital Co., Ltd. may transfer all or part of their shares in the joint-venture lease company to affiliates of KB Financial Group Inc. who agree to comply with all the terms and conditions of this agreement on the establishment and operation of the joint-venture lease company and agree to succeed their responsibility for the joint-venture lease company. Meanwhile, KB KOLAO Leasing Co., Ltd. is selling LVMC Holdings (formerly Kolao Holdings) allied receivables that are overdue by three months or more to Lanexang Leasing Co., Ltd. in accordance with the agreement. e) As of December 31, 2021, KB Capital Co., Ltd. and PT Sunindo Primasura are required to hold the shares of PT Sunindo Kookmin Best Finance for five years after May 18, 2020, when the purchase of shares was completed. If one party is going to sell all or part of the shares, provide them as collateral, trade or dispose of them, it should give the opportunity to exercise preemption to the other party by providing written proposal including transfer price, payment method, and others. Meanwhile, the shareholders of PT Sunindo Kookmin Best Finance shall cause PT Sunindo Kookmin Best Finance, starting on the first financial year after the third year with distributable profits, whether continuous or cumulative, to pay the dividend to the shareholders in the maximum amount of 20% from net profit after tax in the respective financial year. f) KB Securities Co., Ltd., as a sales agency, sold ￦326,500 million of private equity funds and trusts, which loans to corporations (borrower) that invest in apartment rental businesses for the disabled in Australia, to individuals and institutional investors. However, management of the fund is impossible due to the breach of contract by local borrowers in Australia, therefore there is a possibility of losses of principal to these funds subscribers. In this regard, there are three lawsuits in which the Group is a defendant as of December 31, 2021. There is a possibility that additional lawsuits will be filed in the future, but the magnitude and final outcome of the lawsuit are unpredictable. g) In relation to Lime Asset Management, KB Securities Co., Ltd. has a PIS (Portfolio Index Swap) contract, as of December 31, 2021, associated with ‘Lime Thetis Qualified Investor Private Investment Trust No.2’ and ‘Lime Pluto FI Qualified Investor Private Investment Trust No.D-1’ whose redemption were suspended during the fourth quarter of 2019. The notional amount of the underlying assets of the PIS contract is ￦191,500 million. Meanwhile, the Group sold ￦68,100 million of feeder funds of aforementioned redemption-suspended funds. On October 20, 2020, Lime Asset Management’s license as a fund manager was revoked by the Financial Supervisory Service’s sanctions review committee, and most of its redemption-suspended funds and normal funds have been transferred to Wellbridge Asset Management (the bridge management company) to continue to collect and distribute investments. It is difficult to predict whether and when the aforementioned redemption-suspended funds will be redeemed. In this regard, KB Securities Co., Ltd. faces one claim filed as a defendant as of December 31, 2021. The Group has accounted for the estimated loss due to the possibility of additional lawsuits in the future as a provision for litigations. h) The proliferation of COVID-19 has had a negative impact on the global economy, which may have an impact on the expected credit losses and potential impairment of assets in a particular portfolio, and it could negatively affect the revenue generation capability of the Group as follows: • There is a possibility of uncertainty about the credit risk of a borrower that could be affected by COVID-19. • Uncertainty may arise about forward-looking macroeconomic information related to expected credit losses. • Korean won may depreciate against major foreign currencies. This may result in an increase in principal and interest payments on liabilities denominated in foreign currencies, and losses on foreign exchange transactions. • A significant decrease in the fair value of the Group’s investment in an entity that could be affected by COVID-19 pandemic can occur.

Subsidiaries (Tables)

Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of subsidiaries [abstract]
Summary of Interests In Subsidiaries Explanatory	41.1 Details of major consolidated subsidiaries as of December 31, 2021, are as follows: Investor Investee Ownership Location Date of Industry KB Financial Group Inc. Kookmin Bank 100.00 Korea Dec Banking and foreign exchange transaction KB Securities Co., Ltd. 100.00 Korea Dec. Financial investment KB Insurance Co., Ltd. 100.00 Korea Dec. Non-life insurance KB Kookmin Card Co., Ltd. 100.00 Korea Dec. Credit card and installment financing Prudential Life Insurance Company of Korea Ltd. 100.00 Korea Dec. Life insurance KB Asset Management Co., Ltd. 100.00 Korea Dec. Collective investment and advisory KB Capital Co., Ltd. 100.00 Korea Dec. Financial Leasing KB Life Insurance Co., Ltd. 100.00 Korea Dec. Life insurance KB Real Estate Trust Co., Ltd. 100.00 Korea Dec. Real estate trust management KB Savings Bank Co., Ltd. 100.00 Korea Dec. Savings banking KB Investment Co., Ltd. 100.00 Korea Dec. Capital investment KB Data System Co., Ltd. 100.00 Korea Dec. Software advisory, development, and supply KB Credit Information Co., Ltd. 100.00 Korea Dec. Collection of receivables or credit investigation Kookmin Bank Kookmin Bank Cambodia Plc. 100.00 Cambodia Dec. Banking and foreign exchange transaction Kookmin Bank (China) Ltd. 100.00 China Dec. Banking and foreign exchange transaction KB Microfinance Myanmar Co., Ltd. 100.00 Myanmar Dec. Microfinance services PRASAC Microfinance Institution Plc. 100.00 Cambodia Dec. Microfinance services PT Bank KB Bukopin Tbk 67.00 Indonesia Dec. Banking and foreign exchange transaction PT Bank Syariah Bukopin 92.78 Indonesia Dec. Banking PT Bukopin Finance 97.03 Indonesia Dec. Installment financing KB Bank Myanmar Co., Ltd. 100.00 Myanmar Dec. Banking and foreign exchange transaction KB Securities Co., Ltd. KBFG Securities America Inc. 100.00 United States Dec. Investment advisory and securities trading KB Securities Hong Kong Ltd. 100.00 China Dec. Investment advisory and securities trading KB Securities Vietnam Joint Stock Company 99.70 Vietnam Dec. Investment advisory and securities trading KB FINA Joint Stock Company 77.82 Vietnam Dec. Investment advisory and securities trading Investor Investee Ownership Location Date of Industry KB Insurance Co., Ltd. Leading Insurance Services, Inc. 100.00 United States Dec. Management service KBFG Insurance(China) Co., Ltd. 100.00 China Dec. Non-life insurance PT. KB Insurance Indonesia 70.00 Indonesia Dec. Non-life insurance KB Claims Survey & Adjusting 100.00 Korea Dec. Claim service KB Sonbo CNS 100.00 Korea Dec. Management service KB Golden Life Care Co., Ltd. 100.00 Korea Dec. Service KB Healthcare Co., Ltd. 100.00 Korea Dec. Information and communication KB Kookmin Card Co., Ltd. KB Daehan Specialized Bank Plc. 95.71 Cambodia Dec. Auto Installment finance PT. KB Finansia Multi Finance 80.00 Indonesia Dec. Auto Installment finance KB J Capital Co., Ltd. 49.99 Thailand Dec. Service KB Capital Co., Ltd. PT Sunindo Kookmin Best Finance 85.00 Indonesia Dec. Auto Installment finance KB Kookmin Card Co., Ltd., KB Capital Co., Ltd. KB KOLAO Leasing Co., Ltd. 80.00 Laos Dec. Auto Installment finance Kookmin Bank, KB Data System Co., Ltd. PT KB Data Systems Indonesia 100.00 Indonesia Dec. Service KB Asset Management Co., Ltd. KBAM Shanghai Advisory Services Co., Ltd. 100.00 China Dec. General advisory 41.2 Details of consolidated structured entities as of December 31, 2021, are as follows: Consolidated structured entities Reasons for consolidation Trusts Kookmin Bank (development trust) and 10 others The Group controls the trust because it has power to determine management performance of the trust and is significantly exposed to variable returns that absorb losses through the guarantees of payment of principal, or payment of principal and fixed rate of return. Consolidated structured entities Reasons for consolidation Asset-backed securitization MS Sejong 4th Co., Ltd. and 125 others The Group controls these investees because it has power over relevant activities in the event of default, is significantly exposed to variable returns by providing lines of credit, ABCP purchase commitments or acquisition of subordinated debt and has ability to affect those returns through its power. Investment funds and others KB Global Platform Fund and 166 others Funds are consolidated if the Group, as a collective investor or operating manager (member), etc., can manage fund assets on behalf of other investors, or dismiss the collective investor and operating manager, and is substantially exposed to significant variable returns or has such rights.
Summary of Condensed Financial Information of Subsidiaries	41.3 Condensed financial information of major subsidiaries as of and for the years ended December 31, 2020 and 2021, are as follows: December 31, 2020 2020 Assets Liabilities Equity Operating Profit (loss) Total (In millions of Korean won) Kookmin Bank 1 ￦ 438,444,114 ￦ 408,036,040 ￦ 30,408,074 ￦ 24,519,818 ￦ 2,298,195 ￦ 2,905,953 KB Securities Co., Ltd. 1,2 57,570,654 52,516,488 5,054,166 10,040,497 425,622 449,507 KB Insurance Co., Ltd. 1,2 39,125,869 35,093,312 4,032,557 13,735,778 177,181 139,290 KB Kookmin Card Co., Ltd. 1 24,071,644 19,789,958 4,281,686 3,210,581 324,662 308,148 Prudential Life Insurance Company of Korea Ltd. 2 25,121,656 22,681,729 2,439,927 656,062 55,711 (31,718 ) KB Asset Management Co., Ltd. 1 335,601 112,522 223,079 191,427 57,317 57,802 KB Capital Co., Ltd. 1,2 12,823,748 11,392,177 1,431,571 1,300,378 141,646 139,949 KB Life Insurance Co., Ltd. 10,424,916 9,842,789 582,127 1,897,859 (23,185 ) (33,210 ) KB Real Estate Trust Co., Ltd. 1 437,619 108,096 329,523 139,070 66,874 66,718 KB Savings Bank Co., Ltd. 1,883,720 1,658,116 225,604 104,397 17,305 16,197 KB Investment Co., Ltd. 1 848,693 618,552 230,141 128,014 15,387 15,390 KB Data System Co., Ltd. 40,347 23,024 17,323 149,966 (1,729 ) (3,367 ) KB Credit Information Co., Ltd. 27,711 11,773 15,938 39,767 1,132 1,040 December 31, 2021 2021 Assets Liabilities Equity Operating Profit (loss) Total (In millions of Korean won) Kookmin Bank 1 ￦ 483,564,898 ￦ 450,675,985 ￦ 32,888,913 ￦ 26,536,995 ￦ 2,590,764 ￦ 3,265,921 KB Securities Co., Ltd. 1,2 55,493,985 50,008,422 5,485,563 8,543,590 594,301 628,112 KB Insurance Co., Ltd. 1,2 41,472,227 37,328,954 4,143,273 14,131,278 301,836 107,240 KB Kookmin Card Co., Ltd. 1 27,349,561 22,793,920 4,555,641 3,527,354 418,898 442,873 Prudential Life Insurance Company of Korea Ltd. 2 26,287,116 23,992,601 2,294,515 1,976,122 336,198 54,587 KB Asset Management Co., Ltd. 1 375,739 128,589 247,150 254,162 79,899 79,071 KB Capital Co., Ltd. 1,2 14,529,427 12,707,210 1,822,217 1,634,759 209,899 209,719 KB Life Insurance Co., Ltd. 10,634,562 10,174,282 460,280 2,259,301 (46,595 ) (121,847 ) KB Real Estate Trust Co., Ltd. 496,522 119,700 376,822 168,373 81,480 82,299 KB Savings Bank Co., Ltd. 2,601,134 2,339,037 262,097 150,028 18,932 22,526 KB Investment Co., Ltd. 1 1,197,720 922,239 275,481 207,367 55,338 55,340 KB Data System Co., Ltd. 1 44,486 25,911 18,575 174,819 467 1,105 KB Credit Information Co., Ltd. 28,674 12,303 16,371 39,909 388 434 1 Financial information is based on its 2 Includes fair value adjustments arising from the acquisition.
Summary of Changes In Subsidiaries	41.5.1 Subsidiaries newly included in consolidation for the year ended December 31, 2021, are as follows: Company Reasons of obtaining control PT KB Data Systems Indonesia and 15 others Holds more than half of the ownership interests Able Guwall 1st Co., Ltd. and 71 others Holds the power in the event of default and is exposed to significant variable returns by providing lines of credit, ABCP purchase commitments or acquisition of subordinated debt KB Global Private Real Estate Debt Fund No.11 and 33 others Holds the power to determine the operation of the funds and is exposed to variable returns by holding significant amount of ownership interests KB Global Commerce Private Equity Investment Fund and 4 others Holds the power as a general partner and is exposed to variable returns by holding significant amount of ownership interests 41.5.2 Subsidiaries excluded from consolidation for the year ended December 31, 2021, are as follows: Company Reasons of losing control Able Hana Co., Ltd. and 72 others Termination of the commitments KB SAUDI SEPCO II Private Special Asset Fund and 22 others Liquidation Aquila Global Real Assets Fund No.1 LP and 5 others Disposal KB Global ESG Securities Feeder Fund (Equity) and 8 others Decrease in ownership interests to less than majority

Unconsolidated Structured Ent_2

Unconsolidated Structured Entities (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of unconsolidated structured entities [abstract]
Summary Of Nature Purpose Activity Method Of Financing Of The Unconsolidated Structured Entities	42.1 Nature, purpose, and activities of the unconsolidated structured entities and how the structured entities are financed, are as follows: Nature Purpose Activity Method of financing Structured financing Granting PF loans to SOC and real estate Granting loans to ships/aircrafts SPC Construction of SOC and real estate Building ships, construction and purchase of aircrafts Loan commitments through credit line, providing credit line, and investment agreements Investment funds Investment in beneficiary certificates Investment in PEF and partnerships Management of fund assets Payment of fund fees and allocation of fund profits Sales of beneficiary certificate instruments Investment from general partners and limited partners Trusts Management of financial trusts; —Development trust —General unspecified money trust —Trust whose principal is not guaranteed —Other trusts Management of trusted financial assets Payment of trust fees and allocation of trust profits. Sales of trusted financial assets Asset-backed securitization Early cash generation through transfer of securitized assets Fees earned through services to SPC, such as providing lines of credit and ABCP purchase commitments Fulfillment of asset-backed securitization plan Purchase and collection of securitized assets Issuance and repayment of ABS and ABCP Issuance of ABS and ABCP based on securitized assets
Summary Of Unconsolidated Structured Entities Explanatory	42.2 Details of scale of unconsolidated structured entities and nature of the risks associated with the Group’s interests in unconsolidated structured entities as of December 31, 2020 and 2021, are as follows: December 31, 2020 Structured Investment funds Trusts Asset-backed and others Total (In millions of Korean won) Total assets of unconsolidated structured entities ￦ 56,200,300 ￦ 285,528,467 ￦ 1,984,006 ￦ 116,115,027 ￦ 459,827,800 Carrying amount in the financial statements Assets: Financial assets at fair value through profit or loss ￦ 164,996 ￦ 11,151,958 ￦ — ￦ 2,308,917 ￦ 13,625,871 Derivative financial assets — — — 3,005 3,005 Loans measured at amortized cost 4,655,337 379,727 262,382 1,080,824 6,378,270 Financial investments — — — 7,849,054 7,849,054 Investments in associates — 396,953 — — 396,953 Other assets 2,572 3,257 91,297 16,363 113,489 ￦ 4,822,905 ￦ 11,931,895 ￦ 353,679 ￦ 11,258,163 ￦ 28,366,642 Liabilities: Deposits ￦ 612,023 ￦ 26,839 ￦ — ￦ 344,221 ￦ 983,083 Derivative financial liabilities — — — 1,307 1,307 Other liabilities 8,422 97 1 13,736 22,256 ￦ 620,445 ￦ 26,936 ￦ 1 ￦ 359,264 ￦ 1,006,646 Maximum exposure * Assets held ￦ 4,822,905 ￦ 11,931,895 ￦ 353,679 ￦ 11,258,163 ￦ 28,366,642 Purchase and investment commitments — 5,650,847 — 761,200 6,412,047 Unused credit 1,322,414 — 18,287 3,020,084 4,360,785 Acceptances and guarantees and loan commitments 883,342 16,650 — 684,257 1,584,249 ￦ 7,028,661 ￦ 17,599,392 ￦ 371,966 ￦ 15,723,704 ￦ 40,723,723 Methods of determining the maximum exposure Loan Investments / Trust Providing December 31, 2021 Structured Investment funds Trusts Asset-backed and others Total (In millions of Korean won) Total assets of unconsolidated structured entities ￦ 89,647,771 ￦ 416,401,893 ￦ 3,005,720 ￦ 144,897,727 ￦ 653,953,111 Carrying amount in the financial statements Assets: Financial assets at fair value through profit or loss ￦ 126,086 ￦ 13,340,292 ￦ 90,348 ￦ 3,602,631 ￦ 17,159,357 Derivative financial assets — — — 181 181 Loans measured at amortized cost 8,290,514 479,452 265,173 1,194,705 10,229,844 Financial investments — — — 8,084,101 8,084,101 Investments in associates — 292,315 — — 292,315 Other assets 2,496 3,111 119,630 15,638 140,875 ￦ 8,419,096 ￦ 14,115,170 ￦ 475,151 ￦ 12,897,256 ￦ 35,906,673 Liabilities: Deposits ￦ 650,834 ￦ 58,348 ￦ — ￦ 330,592 ￦ 1,039,774 Derivative financial liabilities — — — 437 437 Other liabilities 8,196 289 — 32,179 40,664 ￦ 659,030 ￦ 58,637 ￦ — ￦ 363,208 ￦ 1,080,875 Maximum exposure * Assets held ￦ 8,419,096 ￦ 14,115,170 ￦ 475,151 ￦ 12,897,256 ￦ 35,906,673 Purchase and investment commitments — 6,131,739 131,102 499,682 6,762,523 Unused credit 855,322 — — 4,990,797 5,846,119 Acceptances and guarantees and loan commitments 1,544,394 — 15,890 496,284 2,056,568 ￦ 10,818,812 ￦ 20,246,909 ￦ 622,143 ￦ 18,884,019 ￦ 50,571,883 Methods of determining the maximum exposure Loan Investments / Trust Providing * Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of transactions between related parties [abstract]
Details Of Significant Profit Or Loss Arising From Transactions With Related Parties	43.1 Details of significant profit or loss arising from transactions with related parties for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 2020 2021 (In millions of Korean won) Associates and joint ventures Balhae Infrastructure Company Fee and commission income ￦ 6,743 ￦ 6,817 ￦ 5,689 Korea Credit Bureau Co., Ltd. Interest expense 21 7 6 Fee and commission income 1,056 957 910 Insurance income 3 5 4 Fee and commission expense 2,541 3,280 4,256 Other operating expenses — 1 11 KB GwS Private Securities Investment Trust * Fee and commission income 851 853 146 Incheon Bridge Co., Ltd. Interest income 8,612 4,345 4,069 Interest expense 483 334 158 Fee and commission income — 23 22 Fee and commission expense 7 6 6 Insurance income 284 279 230 Gains on financial instruments at fair value through profit or loss 4,975 899 — Losses on financial instruments at fair value through profit or loss — — 1,374 Reversal of credit losses 5 — 444 Provision for credit losses 1 472 1 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 Fee and commission income 178 12 — Aju Good Technology Venture Fund Interest expense 22 18 27 KB Star Office Private Real Estate Master Fund No.1 Interest income 370 371 370 Interest expense 208 61 5 Fee and commission income 435 436 435 RAND Bio Science Co., Ltd. Interest expense 5 11 — Other non-operating expenses 843 — — SY Auto Capital Co., Ltd. Interest income 1,016 1,097 941 Interest expense 1 2 — Fee and commission income 34 39 88 Fee and commission expense 389 132 15 Insurance income 32 40 42 Other operating income 689 1,709 710 Other operating expenses 288 121 64 Reversal of credit losses 13 17 11 2019 2020 2021 (In millions of Korean won) Food Factory Co., Ltd. Interest income 41 52 70 Interest expense — 12 5 Insurance income 4 5 9 Fee and commission expense 12 4 2 Gains on financial instruments at fair value through profit or loss 60 72 — Losses on financial instruments at fair value through profit or loss — — 1 Reversal of credit losses — — 6 Provision for credit losses 1 8 — KB Pre IPO Secondary Venture Fund No.1 Interest expense 7 3 1 Fee and commission income 110 110 110 Built On Co., Ltd. * Interest income 1 — — Insurance income 1 — — KB Private Equity Fund No.3 * Fee and commission income 480 463 — Wise Asset Management Co., Ltd. * Interest expense 2 — — Acts Co., Ltd. Interest income 1 1 — Insurance income 1 — 1 Gains on financial instruments at fair value through profit or loss 30 — — Dongjo Co., Ltd. Insurance income 2 1 1 A-PRO Co., Ltd. * Interest income 19 7 — Interest expense 4 1 — Fee and commission expense 17 — — Insurance income 4 1 — Provision for credit losses — 1 — POSCO-KB Shipbuilding Fund Fee and commission income 490 387 213 Dae-A Leisure Co., Ltd. Interest expense 8 7 2 Paycoms Co., Ltd. Interest income 10 10 10 Insurance income 1 — — Gains on financial instruments at fair value through profit or loss 125 69 42 Big Dipper Co., Ltd. Fee and commission expense — 768 655 KB-KDBC Pre-IPO New Technology Business Investment Fund Interest expense 58 23 1 Fee and commission income 449 300 190 KB-TS Technology Venture Private Equity Fund Fee and commission income 730 126 285 KB-SJ Tourism Venture Fund Fee and commission income 422 338 279 JLK Inspection Co., Ltd. * Interest expense 1 — — TESTIAN Inc. * Interest income 3 — — Banksalad Co., Ltd. Gains on financial instruments at fair value through profit or loss — 1,636 613 Losses on financial instruments at fair value through profit or loss — — 663 Fee and commission income 39 36 36 Fee and commission expense 5 48 2019 2020 2021 (In millions of Korean won) Iwon Alloy Co., Ltd. Insurance income 2 1 — Bioprotect Ltd. Gains on financial instruments at fair value through profit or loss — — 293 Losses on financial instruments at fair value through profit or loss — 216 — RMGP Bio-Pharma Investment Fund, L.P. Fee and commission income — 27 38 Other non-operating income 33 — — Gains on financial instruments at fair value through profit or loss 947 — 531 Losses on financial instruments at fair value through profit or loss 2,120 489 2,373 RMGP Bio-Pharma Investment, L.P. Losses on financial instruments at fair value through profit or loss — 1 — KB-MDI Centauri Fund LP Fee and commission income — 308 401 Gains on financial instruments at fair value through profit or loss — — 551 Losses on financial instruments at fair value through profit or loss — 322 284 Hibiscus Fund LP Fee and commission income — — 372 Gains on financial instruments at fair value through profit or loss — — 113 RMG-KB BioAccess Fund L.P. Fee and commission income — — 57 Gains on financial instruments at fair value through profit or loss — — 5 S&E Bio Co., Ltd. Interest expense — 1 1 Contents First Inc. Interest expense — 14 83 December & Company Inc. Interest expense — 1 — Insurance income — — 109 GENINUS Inc. Interest expense — 70 29 Gains on financial instruments at fair value through profit or loss — — 4,009 Provision for credit losses — — 6 Wyatt Corp. Gains on financial instruments at fair value through profit or loss 136 — — Insurance income 50 63 87 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund Interest expense 89 40 17 Fee and commission income 735 734 514 Spark Biopharma Inc. Interest expense 59 — 7 Skydigital Inc. Fee and commission income 4 3 KB No.9 Special Purpose Acquisition Company * Interest expense (23 ) — — KB No.10 Special Purpose Acquisition Company * Interest expense 18 — — Gains on financial instruments at fair value through profit or loss 3,066 — — 2019 2020 2021 (In millions of Korean won) KB No.11 Special Purpose Acquisition Company * Interest expense 9 — — Gains on financial instruments at fair value through profit or loss 118 — — KB No.17 Special Purpose Acquisition Company Fee and commission income 175 — — Gains on financial instruments at fair value through profit or loss 1,384 4 — Losses on financial instruments at fair value through profit or loss — — 1,388 Interest expense 28 25 14 KB No.18 Special Purpose Acquisition Company Fee and commission income 263 — — Gains on financial instruments at fair value through profit or loss 1,898 84 8 Interest expense 28 31 20 KB No.19 Special Purpose Acquisition Company Fee and commission income 150 — — Gains on financial instruments at fair value through profit or loss 1,044 11 36 Interest expense 8 13 9 KB No.20 Special Purpose Acquisition Company Fee and commission income — 210 — Gains on financial instruments at fair value through profit or loss — 1,568 68 Interest expense 3 25 15 KB SPROTT Renewable Private Equity Fund No.1 Fee and commission income 490 488 487 KB-Stonebridge Secondary Private Equity Fund Fee and commission income 1,444 1,442 550 COSES GT Co., Ltd. Interest income — 6 18 Interest expense — — 1 Losses on financial instruments at fair value through profit or loss 5 — — Provision for credit losses — 4 — Reversal of credit losses — — 3 IDTECK Co., Ltd. Insurance income — — 1 Mantisco Co., Ltd. Interest expense — — 1 SuperNGine Co., Ltd. Interest expense — — 1 Desilo Inc. Interest income — — 1 Provision for credit losses — — 2 Turing Co., Ltd. Interest expense — — 1 IGGYMOB Co., Ltd. Interest expense — — 1 WJ Private Equity Fund No.1 Fee and commission income — 5 7 UPRISE, Inc. Interest income — 2 5 Interest expense — — 1 Provision for credit losses — 1 — Reversal of credit losses — — 1 CWhy Inc. Losses on financial instruments at fair value through profit or loss — 2,000 — Insurance income 3 — — 2019 2020 2021 (In millions of Korean won) Stratio, Inc. Interest expense 1 — — NEXELON Inc. * Interest expense 2 — — CellinCells Co., Ltd. Interest expense 19 4 — Bomapp Inc. Fee and commission expense — 9 5 Interest expense 1 — — Insurance income 1 8 — Losses on financial instruments at fair value through profit or loss — — 1,980 KB Social Impact Investment Fund Fee and commission income 121 300 300 KB-UTC Inno-Tech Venture Fund Fee and commission income — 371 471 KBSP Private Equity Fund No.4 Fee and commission income — 480 389 KB-NAU Special Situation Corporate Restructuring Private Equity Fund Fee and commission income — 237 1,198 JR Global REIT * Fee and commission income — 6,210 — IGIS No.371 Professional Investors’ Real Estate Investment Company * Fee and commission income — 200 — Koreit Tower Real Estate Investment Trust Company * Fee and commission income — 2,852 — 2020 KB Fintech Renaissance Fund Fee and commission income — 60 147 KB Material and Parts No.1 PEF Fee and commission income — 63 353 FineKB Private Equity Fund No.1 Fee and commission income — 38 540 Paramark KB Fund No.1 Fee and commission income — — 100 KB Bio Private Equity No.3 Ltd. Fee and commission income — — 324 K The 15th REIT Co., Ltd. * Fee and commission income — — 500 Insurance income — — 1 Bluepointpartners Inc. Gains on financial instruments at fair value through profit or loss — — 846 Losses on financial instruments at fair value through profit or loss — 68 — KB-Solidus Global Healthcare Fund Fee and commission income 81 777 167 SwatchOn Inc. Fee and commission income — 9 8 Interest expense — 47 10 Gomi corporation Inc. Interest income — — 19 Interest expense — — 1 Provision for credit losses — — 13 BNF Corporation Ltd. * Interest income 7 401 — Fee and commission income — 2 — Gains on financial instruments at fair value through profit or loss 158 — — Provision for credit losses 1 8 — KB Cape No.1 Private Equity Fund Fee and commission income 97 144 144 Losses on financial instruments at fair value through profit or loss — — 69 ALS Co., Ltd. * Interest income 194 — — Keystone-Hyundai Securities No.1 Private Equity Fund * Fee and commission income 90 115 43 MJT&I Corp. Insurance income 1 — — Others Retirement pension Fee and commission income 939 1,077 1,338 Interest expense 4 3 9 * Excluded from the Group’s related party as of December 31, 2021. Meanwhile, the Group purchased installment financial assets, etc. from SY Auto Capital Co., Ltd. amounting to ￦1,504,217 million and ￦878,690 million for the years ended December 31, 2020 and 2021, respectively.
Summary Of Outstanding Balances For Related Party Transactions	Details of significant outstanding balances of receivables and payables arising from transactions with related parties as of December 31, 2020 and 2021, are as follows: December 31, December 31, (In millions of Korean won) Associates and joint ventures Balhae Infrastructure Company Other assets ￦ 1,733 ￦ 1,427 Korea Credit Bureau Co., Ltd. Loans measured at amortized cost (gross amount) 36 36 Deposits 19,982 10,200 Insurance liabilities 1 1 Other liabilities 623 — KB GwS Private Securities Investment Trust * Other assets 641 — Incheon Bridge Co., Ltd. Financial assets at fair value through profit or loss 38,756 37,382 Loans measured at amortized cost (gross amount) 133,002 114,107 Allowances for credit losses 202 26 Other assets 545 423 Deposits 39,520 35,487 Provisions 292 24 Insurance liabilities 109 79 Other liabilities 205 99 Jungdo Co., Ltd. Deposits 4 4 Dongjo Co., Ltd. Insurance liabilities 1 — Dae-A Leisure Co., Ltd. Deposits 636 17 Other liabilities 21 — Aju Good Technology Venture Fund Deposits 3,093 6,286 Other liabilities 1 10 KB Star Office Private Real Estate Master Fund No.1 Loans measured at amortized cost (gross amount) 10,000 10,000 Allowances for credit losses 5 5 Other assets 137 138 Deposits 4,255 2,578 Other liabilities 24 — KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund Deposits 8,097 1,524 Other liabilities 1 — WJ Private Equity Fund No.1 Other assets 2 2 Deposits 349 260 KB Cape No.1 Private Equity Fund Financial assets at fair value through profit or loss 2,000 1,591 Other assets 144 73 December 31, December 31, (In millions of Korean won) RAND Bio Science Co., Ltd. Deposits 693 443 Loans measured at amortized cost (gross amount) 1 1 SY Auto Capital Co., Ltd. Loans measured at amortized cost (gross amount) 40,060 40,074 Allowances for credit losses 57 68 Other assets 65 630 Deposits 6 17 Insurance liabilities 13 14 Other liabilities 76 36 Food Factory Co., Ltd. Financial assets at fair value through profit or loss 662 663 Loans measured at amortized cost (gross amount) 3,210 3,553 Allowances for credit losses 8 4 Other assets 3 2 Deposits 1,555 839 Provisions 2 — Insurance liabilities 5 8 Other liabilities 9 6 KB Pre IPO Secondary Venture Fund No.1 Deposits 629 103 Acts Co., Ltd. Deposits 18 154 Insurance liabilities 1 2 Other liabilities 100 100 POSCO-KB Shipbuilding Fund Other assets 264 213 Paycoms Co., Ltd. Other assets 1 1 Financial assets at fair value through profit or loss 1,226 1,269 Deposits 1 1 Big Dipper Co., Ltd. Loans measured at amortized cost (gross amount) 4 17 Deposits 1 — KB-KDBC Pre-IPO New Technology Business Investment Fund Deposits 923 904 Iwon Alloy Co., Ltd. Insurance liabilities — 1 RMGP Bio-Pharma Investment Fund, L.P. Financial assets at fair value through profit or loss 4,250 5,423 Other liabilities 71 79 RMGP Bio-Pharma Investment, L.P. Financial assets at fair value through profit or loss 9 14 Wyatt Corp. Financial assets at fair value through profit or loss 6,000 6,000 Deposits 1 1 Insurance liabilities 39 94 Skydigital Inc. Deposits 15 85 Banksalad Co., Ltd. Financial assets at fair value through profit or loss 9,141 9,090 December 31, December 31, (In millions of Korean won) Spark Biopharma Inc. Loans measured at amortized cost (gross amount) — 17 Financial assets at fair value through profit or loss — 4,950 Deposits — 6,015 Other liabilities — 3 UPRISE, Inc. Financial assets at fair value through profit or loss 250 1,250 Loans measured at amortized cost (gross amount) 500 — Allowances for credit losses 1 — Deposits 11 4,001 Stratio, Inc. Financial assets at fair value through profit or loss 1,000 1,000 Deposits 13 — Honest Fund, Inc. Financial assets at fair value through profit or loss 3,999 3,999 CellinCells Co., Ltd. Financial assets at fair value through profit or loss 2,000 2,000 Loans measured at amortized cost (gross amount) 24 6 Deposits 260 38 Jo Yang Industrial Co., Ltd. Deposits 2 1 KB No.17 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 2,687 1,301 Deposits 1,711 1,687 Other liabilities 23 12 KB No.18 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 3,873 3,881 Deposits 2,101 2,077 Other liabilities 19 12 KB No.19 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 2,055 2,091 Deposits 1,053 1,013 Other liabilities 3 5 KB No.20 Special Purpose Acquisition Company Financial assets at fair value through profit or loss 3,067 3,135 Deposits 1,716 1,681 Other liabilities 1 3 COSES GT Co., Ltd. Financial assets at fair value through profit or loss 4,930 4,930 Loans measured at amortized cost (gross amount) 500 515 Allowances for credit losses 4 2 Other assets 1 1 Deposits 292 1,939 Insurance liabilities 1 — December 31, December 31, (In millions of Korean won) IDTECK Co., Ltd. Insurance liabilities — 1 Bomapp Inc. Financial assets at fair value through profit or loss 1,999 19 Insurance liabilities 2 — Channel Corporation Financial assets at fair value through profit or loss 4,551 14,551 MitoImmune Therapeutics Financial assets at fair value through profit or loss 5,000 7,000 KB-Solidus Global Healthcare Fund Other assets 707 620 Bioprotect Ltd. Financial assets at fair value through profit or loss 3,264 3,557 Gomi corporation Inc. Financial assets at fair value through profit or loss 500 2,500 Loans measured at amortized cost (gross amount) 9 2,233 Allowances for credit losses — 12 Other assets — 4 Deposits 37 3,188 Other liabilities — 1 Copin Communications, Inc. Financial assets at fair value through profit or loss 1,500 4,801 Go2joy Co., Ltd. Financial assets at fair value through profit or loss 1,200 1,200 ClavisTherapeutics, Inc. Financial assets at fair value through profit or loss 2,000 2,000 S&E Bio Co., Ltd. Financial assets at fair value through profit or loss 2,000 2,000 Deposits 1,142 263 Bluepointpartners Inc. Financial assets at fair value through profit or loss 1,432 2,278 4N Inc. Financial assets at fair value through profit or loss 200 200 Deposits 76 39 Xenohelix Co., Ltd. Financial assets at fair value through profit or loss 2,100 2,100 Contents First Inc. Financial assets at fair value through profit or loss 6,146 7,277 Deposits 1,823 12,650 Other liabilities 7 57 KB-MDI Centauri Fund LP Financial assets at fair value through profit or loss 4,280 9,633 Other assets 308 104 OKXE Inc. Financial assets at fair value through profit or loss 800 800 December 31, December 31, (In millions of Korean won) GENINUS Inc. Financial assets at fair value through profit or loss 5,599 5,855 Loans measured at amortized cost (gross amount) — 17 Allowances for credit losses — 6 Deposits 13,630 34,415 Other liabilities 15 2 Mantisco Co., Ltd. Loans measured at amortized cost (gross amount) — 1 Financial assets at fair value through profit or loss — 3,000 Deposits — 386 IMBiologics Corp. Loans measured at amortized cost (gross amount) — 4 Financial assets at fair value through profit or loss — 5,000 SuperNGine Co., Ltd. Loans measured at amortized cost (gross amount) — 2 Deposits — 944 Financial assets at fair value through profit or loss — 1,996 Desilo Inc. Financial assets at fair value through profit or loss — 3,168 Loans measured at amortized cost (gross amount) — 301 Allowances for credit losses — 2 Deposits — 168 Turing Co., Ltd. Financial assets at fair value through profit or loss — 3,000 Deposits — 1,054 IGGYMOB Co., Ltd. Financial assets at fair value through profit or loss — 5,000 Loans measured at amortized cost (gross amount) — 6 Deposits — 2,938 FineKB Private Equity Fund No.1 Other assets 38 153 Paramark KB Fund No.1 Other liabilities — 200 Neomio Corp. * Deposits 535 — December & Company Inc. Deposits 1 1 Insurance liabilities — 10 KB Social Impact Investment Fund Other assets — 150 Checkmate Therapeutics Inc. Financial assets at fair value through profit or loss — 2,200 G1 Playground Co., Ltd. Financial assets at fair value through profit or loss — 1,000 Deposits — 354 Pin Therapeutics Inc. Financial assets at fair value through profit or loss — 3,000 December 31, December 31, (In millions of Korean won) Hibiscus Fund LP Financial assets at fair value through profit or loss — 4,731 Other assets — 251 RMG-KB BioAccess Fund L.P. Financial assets at fair value through profit or loss — 353 RMG-KB BP Management Ltd. Financial assets at fair value through profit or loss — 7 SwatchOn Inc. Financial assets at fair value through profit or loss 3,345 3,345 Loans measured at amortized cost (gross amount) 59 73 Provisions 1 — Deposits 3,947 686 Other liabilities 40 — Key management personnel Loans measured at amortized cost (gross amount) 5,153 4,591 Allowances for credit losses 2 2 Other assets 5 4 Deposits 17,167 16,996 Provisions — 1 Insurance liabilities 2,501 2,471 Other liabilities 371 345 Others Retirement pension Other assets 295 369 Other liabilities 10,600 5,014 * Excluded from the Group’s related party as of December 31, 2021, therefore, the remaining outstanding balances with those entities are not disclosed.
Summary Of Significant Loan Transactions With Related Parties	Details of significant lending transactions with related parties for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Loan Collection Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦43 ￦ 36 ￦ (43 ) ￦ 36 Incheon Bridge Co., Ltd. 185,564 901 (14,707 ) 171,758 Carlife Co., Ltd. — 22 (22 ) — KB Star Office Private Real Estate Master Fund No.1 10,000 — — 10,000 KB Cape No.1 Private Equity Fund 2,000 — — 2,000 RAND Bio Science Co., Ltd. 1 1 (1 ) 1 SY Auto Capital Co., Ltd. 41,990 11,310 (13,240 ) 40,060 Food Factory Co., Ltd. 2,582 1,314 (24 ) 3,872 Acts Co., Ltd. — 74 (74 ) — Paycoms Co., Ltd. 1,157 69 — 1,226 Big Dipper Co., Ltd. 11 4 (11 ) 4 A-PRO Co., Ltd.* 2,019 2,000 (4,019 ) — RMGP Bio-Pharma Investment Fund, L.P. 3,419 831 — 4,250 RMGP Bio-Pharma Investment, L.P. 8 1 — 9 Wyatt Corp. 6,000 — — 6,000 Banksalad Co., Ltd. 7,504 1,637 — 9,141 UPRISE, Inc. 250 500 — 750 Stratio, Inc. 1,000 — — 1,000 Honest Fund, Inc. 3,999 — — 3,999 CellinCells Co., Ltd. 2,004 24 (4 ) 2,024 KB No.17 Special Purpose Acquisition Company 2,683 4 — 2,687 KB No.18 Special Purpose Acquisition Company 3,786 87 — 3,873 KB No.19 Special Purpose Acquisition Company 2,043 12 — 2,055 KB No.20 Special Purpose Acquisition Company 1,499 1,568 — 3,067 COSES GT Co., Ltd. 2,930 2,500 — 5,430 CWhy Inc. 2,000 — (2,000 ) — Bomapp Inc. 1,999 — — 1,999 Channel Corporation 2,000 2,551 — 4,551 MitoImmune Therapeutics 5,000 — — 5,000 Bioprotect Ltd. — 3,264 — 3,264 Gomi corporation Inc. — 509 — 509 Copin Communications, Inc. — 1,500 — 1,500 Go2joy Co., Ltd. — 1,200 — 1,200 ClavisTherapeutics, Inc. — 2,000 — 2,000 S&E bio Co., Ltd. — 2,000 — 2,000 Bluepointpartners Inc. — 1,432 — 1,432 4N Inc. — 200 — 200 Xenohelix Co., Ltd. — 2,100 — 2,100 Contents First Inc. — 6,146 — 6,146 KB-MDI Centauri Fund LP — 4,280 — 4,280 SwatchOn Inc. 1,845 1,559 — 3,404 OKXE Inc. — 800 — 800 GENINUS Inc. — 5,599 — 5,599 BNF Corporation Ltd.* 3,659 1,000 (4,659 ) — Key management personnel 3,538 5,141 (3,526 ) 5,153 2021 Beginning Loan Collection Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦ 36 ￦ 36 ￦ (36 ) ￦ 36 Incheon Bridge Co., Ltd. 171,758 7 (20,276 ) 151,489 KB Star Office Private Real Estate Master Fund No.1 10,000 — — 10,000 KB Cape No.1 Private Equity Fund 2,000 — (409 ) 1,591 RAND Bio Science Co., Ltd. 1 1 (1 ) 1 SY Auto Capital Co., Ltd. 40,060 74 (60 ) 40,074 Food Factory Co., Ltd. 3,872 397 (53 ) 4,216 Paycoms Co., Ltd. 1,226 43 — 1,269 Big Dipper Co., Ltd. 4 17 (4 ) 17 RMGP Bio-Pharma Investment Fund, L.P. 4,250 1,173 — 5,423 RMGP Bio-Pharma Investment, L.P. 9 5 — 14 Wyatt Corp. 6,000 — — 6,000 Banksalad Co., Ltd. 9,141 — (51 ) 9,090 UPRISE, Inc. 750 1,000 (500 ) 1,250 Stratio, Inc. 1,000 — — 1,000 Honest Fund, Inc. 3,999 — — 3,999 CellinCells Co., Ltd. 2,024 6 (24 ) 2,006 KB No.17 Special Purpose Acquisition Company 2,687 — (1,386 ) 1,301 KB No.18 Special Purpose Acquisition Company 3,873 8 — 3,881 KB No.19 Special Purpose Acquisition Company 2,055 36 — 2,091 KB No.20 Special Purpose Acquisition Company 3,067 68 — 3,135 COSES GT Co., Ltd. 5,430 15 — 5,445 Bomapp Inc. 1,999 — (1,980 ) 19 Channel Corporation 4,551 10,000 — 14,551 MitoImmune Therapeutics 5,000 2,000 — 7,000 Bioprotect Ltd. 3,264 293 — 3,557 Gomi corporation Inc. 509 4,233 (9 ) 4,733 Copin Communications, Inc. 1,500 3,301 — 4,801 Go2joy Co., Ltd. 1,200 — — 1,200 ClavisTherapeutics, Inc. 2,000 — — 2,000 S&E Bio Co., Ltd. 2,000 — — 2,000 Bluepointpartners Inc. 1,432 846 — 2,278 4N Inc. 200 — — 200 Xenohelix Co., Ltd. 2,100 — — 2,100 Contents First Inc. 6,146 1,131 — 7,277 KB-MDI Centauri Fund LP 4,280 5,353 — 9,633 SwatchOn Inc. 3,404 73 (59 ) 3,418 OKXE Inc. 800 — — 800 GENINUS Inc. 5,599 273 — 5,872 Checkmate Therapeutics Inc. — 2,200 — 2,200 Mantisco Co., Ltd. — 3,001 — 3,001 IMBiologics Corp. — 5,004 — 5,004 Spark Biopharma Inc. — 4,967 — 4,967 G1 Playground Co., Ltd. — 1,000 — 1,000 Pin Therapeutics Inc. — 3,000 — 3,000 Hibiscus Fund LP — 4,731 — 4,731 SuperNGine Co., Ltd. — 1,998 — 1,998 2021 Beginning Loan Collection Ending (In millions of Korean won) Desilo Inc. — 3,469 — 3,469 RMG-KB BioAccess Fund L.P. — 353 — 353 RMG-KB BP Management Ltd. — 7 — 7 IGGYMOB Co., Ltd. — 5,006 — 5,006 Turing Co., Ltd. — 3,000 — 3,000 Key management personnel 5,153 3,421 (3,983 ) 4,591 * Excluded from the Group’s related party as of December 31, 2021.
Summary Of Significant Borrowing Transactions With Related Parties	Details of significant borrowing transactions with related parties for the years ended December 31, 2020 and 2021, are as follows: 2020 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦ 17,966 ￦ 1,000 ￦ — ￦ 1,016 ￦ 19,982 Incheon Bridge Co., Ltd. 45,447 20,000 (21,260 ) (4,667 ) 39,520 Jungdo Co., Ltd. 4 — — — 4 Dae-A Leisure Co., Ltd. 753 — — (117 ) 636 Computerlife Co., Ltd. 1 — — (1 ) — Skydigital Inc. 25 — — (10 ) 15 Jo Yang Industrial Co., Ltd. 2 — — — 2 Aju Good Technology Venture Fund 5,456 1,442 — (3,805 ) 3,093 KB-KDBC Pre-IPO New Technology Business Investment Fund 7,054 1,500 (6,500 ) (1,131 ) 923 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund 13,118 — — (5,021 ) 8,097 Neomio Corp. 2 — — — 535 535 WJ Private Equity Fund No.1 — — — 349 349 KB Star Office Private Real Estate Master Fund No.1 8,293 2,117 (5,630 ) (525 ) 4,255 SY Auto Capital Co., Ltd. 8 — — (2 ) 6 KB No.17 Special Purpose Acquisition Company 1,742 1,525 (1,500 ) (56 ) 1,711 KB No.18 Special Purpose Acquisition Company 2,140 2,063 (2,100 ) (2 ) 2,101 KB No.19 Special Purpose Acquisition Company 1,093 1,000 (1,000 ) (40 ) 1,053 KB No.20 Special Purpose Acquisition Company 1,984 1,522 (1,500 ) (290 ) 1,716 RAND Bio Science Co., Ltd. 4,452 2,250 (3,750 ) (2,259 ) 693 Wise Asset Management Co., Ltd. 21 — — (21 ) — Food Factory Co., Ltd. 1,073 1,503 (1,003 ) (18 ) 1,555 Acts Co., Ltd. 1 — — 17 18 Paycoms Co., Ltd. 1 — — — 1 Big Dipper Co., Ltd. 6 — — (5 ) 1 A-PRO Co., Ltd. 2 3,201 — — (3,201 ) — Wyatt Corp. — — — 1 1 Stratio, Inc. 726 — — (713 ) 13 UPRISE, Inc. — — — 11 11 CellinCells Co., Ltd. 1,545 — — (1,285 ) 260 COSES GT Co., Ltd. — — — 292 292 SwatchOn Inc. 395 7,002 (3,801 ) 351 3,947 2020 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) BNF Corporation Ltd. 2 947 — — (947 ) — Gomi corporation Inc. — — — 37 37 S&E bio Co., Ltd. — — — 1,142 1,142 KB IGen Private Equity Fund No.1 2 147 — — (147 ) — KB Pre IPO Secondary Venture Fund No.1 2,955 — — (2,326 ) 629 4N Inc. — — — 76 76 Contents First Inc. — 4,000 (3,000 ) 823 1,823 December & Company Inc. — — — 1 1 GENINUS Inc. — — — 13,630 13,630 Key management personnel 15,338 21,319 (20,410 ) 920 17,167 2021 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) Associates and joint ventures Korea Credit Bureau Co., Ltd. ￦ 19,982 ￦ — ￦ (1,000 ) ￦ (8,782 ) ￦ 10,200 Incheon Bridge Co., Ltd. 39,520 15,000 (20,000 ) 967 35,487 Jungdo Co., Ltd. 4 — — — 4 Dae-A Leisure Co., Ltd. 636 — (479 ) (140 ) 17 Skydigital Inc. 15 — — 70 85 Jo Yang Industrial Co., Ltd. 2 — — (1 ) 1 Aju Good Technology Venture Fund 3,093 3,840 (1,442 ) 795 6,286 KB-KDBC Pre-IPO New Technology Business Investment Fund 923 — — (19 ) 904 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund 8,097 — — (6,573 ) 1,524 Neomio Corp. 2 535 — — (535 ) — WJ Private Equity Fund No.1 349 — — (89 ) 260 KB Star Office Private Real Estate Master Fund No.1 4,255 — (1,770 ) 93 2,578 SY Auto Capital Co., Ltd. 6 — — 11 17 KB No.17 Special Purpose Acquisition Company 1,711 1,546 (1,525 ) (45 ) 1,687 KB No.18 Special Purpose Acquisition Company 2,101 2,016 (2,063 ) 23 2,077 KB No.19 Special Purpose Acquisition Company 1,053 1,000 (1,000 ) (40 ) 1,013 KB No.20 Special Purpose Acquisition Company 1,716 1,534 (1,522 ) (47 ) 1,681 RAND Bio Science Co., Ltd. 693 — (400 ) 150 443 Food Factory Co., Ltd. 1,555 507 (500 ) (723 ) 839 Acts Co., Ltd. 18 — — 136 154 Paycoms Co., Ltd. 1 — — — 1 Big Dipper Co., Ltd. 1 — — (1 ) — Wyatt Corp. 1 — — — 1 Stratio, Inc. 13 — — (13 ) — UPRISE, Inc. 11 — — 3,990 4,001 CellinCells Co., Ltd. 260 — — (222 ) 38 COSES GT Co., Ltd. 292 — — 1,647 1,939 SwatchOn Inc. 3,947 200 (3,501 ) 40 686 Gomi corporation Inc. 37 — — 3,151 3,188 S&E Bio Co., Ltd. 1,142 — — (879 ) 263 KB Pre IPO Secondary Venture Fund No.1 629 — — (526 ) 103 2021 Beginning Borrowing Repayment Others 1 Ending (In millions of Korean won) 4N Inc. 76 — — (37 ) 39 Contents First Inc. 1,823 20,000 (11,000 ) 1,827 12,650 December & Company Inc. 1 — — — 1 GENINUS Inc. 13,630 — (5,000 ) 25,785 34,415 Mantisco Co., Ltd. — — — 386 386 Spark Biopharma Inc. — 1,000 (3,000 ) 8,015 6,015 G1 Playground Co., Ltd. — — — 354 354 SuperNGine Co., Ltd. — — — 944 944 Desilo Inc. — — — 168 168 Turing Co., Ltd. — — — 1,054 1,054 IGGYMOB Co., Ltd. — — — 2,938 2,938 Key management personnel 17,167 16,574 (16,994 ) 249 16,996 1 Transactions between related parties, such as settlements arising from operating activities and deposits, are expressed in net amount. 2 Excluded from the Group’s related party as of December 31, 2021.
Summary Of Significant Investment And Collection Transactions With Related Parties	Details of significant investment and withdrawal transactions with related parties for the years ended December 31, 2020 and 2021, are as follows: 2020 2021 Equity Withdrawal Equity Withdrawal (In millions of Korean won) Balhae Infrastructure Company ￦ 894 ￦ 6,973 ￦ 279 ￦ 9,584 KB GwS Private Securities Investment Trust* — 9,523 — 188,836 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 — 3,230 — 11,860 POSCO-KB Shipbuilding Fund 5,000 2,125 — 7,600 KB Pre IPO Secondary Venture Fund No.1 — 585 — 292 KB-KDBC Pre-IPO New Technology Business Investment Fund — 6,400 — 4,800 KB-SJ Tourism Venture Fund 1,500 — 500 — Korea Credit Bureau Co., Ltd. — 90 — 90 KB-UTC Inno-Tech Venture Fund 16,965 — 5,085 1,125 KB-Solidus Global Healthcare Fund 10,920 4,940 — 3,120 KB-Stonebridge Secondary Private Equity Fund 9,093 — 13,258 11,578 WJ Private Equity Fund No.1 10,000 — — — All Together Korea Fund No.2 100,000 90,127 — — KB Star Office Private Real Estate Master Fund No.1 — 1,273 — 1,246 KB SPROTT Renewable Private Equity Fund No.1 4,129 — — — KB-NAU Special Situation Corporate Restructuring Private Equity Fund 5,700 — 7,692 — JR Global REIT* 219,493 3,639 — 65,025 KB Bio Private Equity No.3 Ltd. — — 10,000 — K The 15th REIT Co., Ltd.* — — 8,600 8,600 IGIS No.371 Professional Investors’ Real Estate Investment Company* 10,000 10,000 — — Koreit Tower Real Estate Investment Trust Company* 30,000 30,000 — — Project Vanilla Co., Ltd. 2,450 — — — December & Company Inc. 30,000 — — — KB Social Impact Investment Fund 1,500 — 1,500 — 2020 KB Fintech Renaissance Fund 550 — — — KB Material and Parts No.1 PEF 3,400 — — — KB Private Equity Fund No.3* — 8,000 — — KB-TS Technology Venture Private Equity Fund 2,240 5,488 3,080 5,376 Keystone-Hyundai Securities No.1 Private Equity Fund* — — — 1,925 KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund 8,000 3,200 10,000 10,800 Aju Good Technology Venture Fund — 2,885 — 4,769 G payment Joint Stock Company — — 9,029 — 498 Seventh Owners LLC — — 166,851 — KB-KTB Technology Venture Fund — — 5,600 — KB-SOLIDUS Healthcare Investment Fund — — 1,800 — Paramark KB Fund No.1 — — 2,040 — FineKB Private Equity Fund No.1 — — 8,375 — * Excluded from the Group’s related party as of December 31, 2021.
Summary Of Commitments Made On Behalf Of Entity Related Party Transactions	Unused commitments provided to related parties as of December 31, 2020 and 2021, are as follows: December 31, 2020 December 31, 2021 (In millions of Korean won or in a US Dollar or Associates and joint ventures Balhae Infrastructure Company Purchase of securities ￦ 6,433 ￦ 6,154 Korea Credit Bureau Co., Ltd. Unused lines of credit for credit card 564 565 Incheon Bridge Co., Ltd. Loan commitments in Korean won 20,000 20,000 Unused lines of credit for credit card 98 93 KoFC POSCO Hanwha KB Shared Growth Private Equity Fund No.2 Commitments on loss absorption priority 14,980 10,000 SY Auto Capital Co., Ltd. Unused lines of credit for credit card 90 98 Food Factory Co., Ltd. Loan commitments in Korean won 388 — Unused lines of credit for credit card 73 82 KB No.17 Special Purpose Acquisition Company Unused lines of credit for credit card 441 — KB No.18 Special Purpose Acquisition Company Unused lines of credit for credit card 15 15 KB No.19 Special Purpose Acquisition Company Unused lines of credit for credit card — 1 CellinCells Co., Ltd. Unused lines of credit for credit card — 18 RAND Bio Science Co., Ltd. Unused lines of credit for credit card 24 24 Big Dipper Co., Ltd. Unused lines of credit for credit card 96 43 SwatchOn Inc. Unused lines of credit for credit card 7 127 Gomi corporation Inc. Unused lines of credit for credit card — 2 COSES GT Co., Ltd. Unused lines of credit for credit card — 15 GENINUS Inc. Unused lines of credit for credit card — 43 Spark Biopharma Inc. Unused lines of credit for credit card — 33 Mantisco Co., Ltd. Unused lines of credit for credit card — 29 IMBiologics Corp. Unused lines of credit for credit card — 18 SuperNGine Co., Ltd. Unused lines of credit for credit card — 18 IGGYMOB Co., Ltd. Unused lines of credit for credit card — 14 KB Pre IPO Secondary Venture Fund No.1 Commitments on loss absorption priority 1,671 1,671 KB-TS Technology Venture Private Equity Fund Purchase of securities 3,696 616 KB-SJ Tourism Venture Fund Purchase of securities 500 — KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund Purchase of securities 10,000 — KB SPROTT Renewable Private Equity Fund No.1 Purchase of securities 18,704 18,704 KB-Stonebridge Secondary Private Equity Fund Purchase of securities 18,837 5,579 KB Social Impact Investment Fund Purchase of securities 1,500 — KB-UTC Inno-Tech Venture Fund Purchase of securities 5,085 — KB-NAU Special Situation Corporate Restructuring Private Equity Fund Purchase of securities 24,300 16,608 All Together Korea Fund No.2 Purchase of securities 990,000 — KB-KTB Technology Venture Fund Purchase of securities — 22,400 KB-SOLIDUS Healthcare Investment Fund Purchase of securities — 88,200 KB Co-Investment Private Equity Fund No.1 Purchase of securities — 20,000 FineKB Private Equity Fund No.1 Purchase of securities 25,000 16,625 KB-Solidus Global Healthcare Fund Purchase of securities 2,120 2,120 Commitments on loss absorption priority — 4,500 December 31, 2020 December 31, 2021 (In millions of Korean won or in a US Dollar or Malaysian ringgit) Paramark KB Fund No.1 Purchase of securities — 27,960 RMGP Bio-Pharma Investment Fund, L.P. Purchase of securities USD 7,796,423 USD 5,169,932 RMGP Bio-Pharma Investment, L.P. Purchase of securities USD 17,132 USD 12,615 KB-MDI Centauri Fund LP Purchase of securities USD 13,537,500 USD 6,622,923 Hibiscus Fund LP Purchase of securities — MYR 33,333,333 RMG-KB BP Management Ltd. Purchase of securities — USD 616,170 RMG-KB BioAccess Fund L.P. Purchase of securities — USD 29,702,324 Key management personnel Loan commitments in Korean won 1,760 2,018
Summary Of Key Management Personnel Compensation	Details of compensation to key management personnel for the years ended December 31, 2019, 2020 and 2021, are as follows: 2019 Short-term Post-employment Share-based Total (In millions of Korean won) Registered directors (executive) ￦ 8,540 ￦ 425 ￦ 7,434 ￦ 16,399 Registered directors (non-executive) 1,030 — — 1,030 Non-registered directors 9,157 360 7,510 17,027 ￦ 18,727 ￦ 785 ￦ 14,944 ￦ 34,456 2020 Short-term Post-employment Share-based Total (In millions of Korean won) Registered directors (executive) ￦ 8,111 ￦ 672 ￦ 6,369 ￦ 15,152 Registered directors (non-executive) 1,133 — — 1,133 Non-registered directors 10,782 396 6,934 18,112 ￦ 20,026 ￦ 1,068 ￦ 13,303 ￦ 34,397 2021 Short-term Post-employment Share-based Total (In millions of Korean won) Registered directors (executive) ￦ 8,152 ￦ 966 ￦ 11,655 ￦ 20,773 Registered directors (non-executive) 1,061 — — 1,061 Non-registered directors 12,820 466 14,424 27,710 ￦ 22,033 ￦ 1,432 ￦ 26,079 ￦ 49,544
Summary Of Provision Of Guarantees Or Collateral By Entity Related Party Transactions	Details of collateral provided by related parties as of December 31, 2020 and 2021, are as follows: Assets held as collateral December 31, 2020 December 31, 2021 (In millions of Korean won) Associates KB Star Office Private Real Estate Master Fund No.1 Real estate ￦ 13,000 ￦ 13,000 Key management personnel Time deposits and others 213 745 Real estate 4,356 5,176

Parent Company Information (Tab

Parent Company Information (Tables)	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Summary of Condensed Statements of Financial Position	The following tables present the Parent Company Only financial information: Condensed Statements of Financial Position December 31, December 31, (In millions of Korean won) Assets Cash and due from financial institutions ￦ 23,084 ￦ 608,076 Financial assets at fair value through profit or loss 474,262 440,760 Loans at amortized cost 179,542 249,128 Investments in subsidiaries* Banking subsidiaries 14,821,721 14,821,721 Nonbanking subsidiaries. 11,698,159 11,919,717 Other assets 911,723 831,977 Total assets ￦ 28,108,491 ￦ 28,871,379 Liabilities and shareholders’ equity Borrowings ￦ 100,000 ￦ — Debentures 6,128,043 5,552,791 Other liabilities 894,828 805,614 Shareholders’ equity 20,985,620 22,512,974 Total liabilities and shareholders’ equity ￦ 28,108,491 ￦ 28,871,379 * Investments in subsidiaries were accounted at cost method in accordance with IAS No.27.
Summary of Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income 2019 2020 2021 (In millions of Korean won) Income Dividends from subsidiaries ￦ 926,934 ￦ 1,573,411 ￦ 1,617,949 Interest from subsidiaries 3,618 3,519 7,566 Other income 22,709 22,749 31,284 Total income 953,261 1,599,679 1,656,799 Expense Interest expense 126,065 132,437 120,469 Non-interest expense 80,355 87,876 99,745 Total expense 206,420 220,313 220,214 Profit before income tax expense 746,841 1,379,366 1,436,585 Income tax benefit (expense) (854 ) 49 2,281 Profit for the year 745,987 1,379,415 1,438,866 Other comprehensive loss for the year, net of tax (520 ) (368 ) (298 ) Total comprehensive income for the year ￦ 745,467 ￦ 1,379,047 ￦ 1,438,568
Summary of Condensed Statements of Cash Flows	Condensed Statements of Cash Flows 2019 2020 2021 (In millions of Korean won) Operating activities Net income ￦ 745,987 ￦ 1,379,415 ￦ 1,438,866 Reconciliation of net income to net cash provided by operating activities: Other operating activities, net (274 ) 9,930 (92,785 ) Net cash inflow from operating activities 745,713 1,389,345 1,346,081 Investing activities Net payments to subsidiaries (100,000 ) (2,347,543 ) (219,268 ) Other investing activities, net (200,609 ) (146,477 ) (39,477 ) Net cash outflow from investing activities (300,609 ) (2,494,020 ) (258,745 ) Financing activities Net increase (decrease) in borrowings (298,321 ) 100,000 (100,000 ) Increases in debentures 1,037,656 1,537,091 389,405 Repayments of debentures and lease liabilities (868,723 ) (940,610 ) (970,535 ) Issuance of hybrid securities 399,085 1,296,693 1,142,203 Cash dividends paid (766,249 ) (883,952 ) (1,053,417 ) Acquisition of treasury shares (274,317 ) — — Net cash inflow (outflow) from financing activities (770,869 ) 1,109,222 (592,344 ) Net increase (decrease) in cash and cash equivalents (325,765 ) 4,547 494,992 Cash and cash equivalents as of January 1 344,299 18,534 23,081 Cash and cash equivalents as of December 31 ￦ 18,534 ￦ 23,081 ￦ 518,073

The Parent Company - Additional

The Parent Company - Additional Information (Details) $ in Thousands, ₩ in Millions, shares in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)shares	Dec. 31, 2020KRW (₩)shares	Dec. 31, 2021USD ($)shares
Entity Information [Abstract]
Name of reporting entity or other means of identification	KB Financial Group Inc.	KB Financial Group Inc.
Description of nature of entity's operations and principal activities	KB Financial Group Inc. (the “Parent Company”) was incorporated on September 29, 2008, under the Financial Holding Companies Act of Korea. KB Financial Group Inc. and its subsidiaries (the “Group”) derive substantially all of their revenue and income from providing a broad range of banking and related financial services to consumers and corporations. The Parent Company’s main business purpose is to control subsidiaries that engage in the financial business or subsidiaries closely related to the financial business through the stock ownership.	KB Financial Group Inc. (the “Parent Company”) was incorporated on September 29, 2008, under the Financial Holding Companies Act of Korea. KB Financial Group Inc. and its subsidiaries (the “Group”) derive substantially all of their revenue and income from providing a broad range of banking and related financial services to consumers and corporations. The Parent Company’s main business purpose is to control subsidiaries that engage in the financial business or subsidiaries closely related to the financial business through the stock ownership.
Issued capital	₩ 2,090,558	₩ 2,090,558	$ 1,763,440
Number of shares authorised	1,000	1,000	1,000

Basis of Preparation - Summary

Basis of Preparation - Summary of Preparation of Financial Statements (Details)	12 Months Ended
	Dec. 31, 2021
Deferred Tax Assets
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of assets with significant risk of material adjustments within next financial year	As the income taxes on the Group’s taxable income is calculated by applying the tax laws of various countries and the decisions of tax authorities, there is uncertainty in calculating the final tax effect.If a certain portion of the taxable income is not used for investments, wages, etc. in accordance with the Korean regulation called ‘Special Taxation for Facilitation of Investment and Mutually-beneficial Cooperation’, the Group is liable to pay additional income tax calculated based on the tax laws. Therefore, the effect of recirculation of corporate income should be reflected in current and deferred income tax. As the Group’s income tax is dependent on the actual investments, wages, etc. per each year, there are uncertainties in measuring the final tax effects during the period when the tax law is applied.
Fair value of financial instruments
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of assets with significant risk of material adjustments within next financial year	The fair value of financial instruments where no active market exists or where quoted prices are not otherwise available is determined by using valuation techniques. Financial instruments, which are not actively traded in the market and those with less transparent market prices, will have less objective fair values and require broad judgment on liquidity, concentration, uncertainty in market factors, assumptions in fair value determination, and other risks. As described in the significant accounting policies in Note 3.3 Recognition and Measurement of Financial Instruments, diverse valuation techniques are used to determine the fair value of financial instruments, from generally accepted market valuation models to internally developed valuation models that incorporate various types of assumptions and variables.
Allowances and provisions for credit losses
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of liabilities with significant risk of material adjustments within next financial year	The Group recognizes and measures allowances for credit losses of debt instruments measured at amortized cost, debt instruments measured at fair value through other comprehensive income, and lease receivables. Also, the Group recognizes and measures provisions for credit losses of acceptances and guarantees, and unused loan commitments. Accuracy of allowances and provisions for credit losses is dependent upon estimation of expected cash flows of the borrower subject to individual assessment of impairment, and upon assumptions and variables of model used in collective assessment of impairment and estimation of provisions for credit losses of acceptances and guarantees, and unused loan commitments.
Net defined benefit liability
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of liabilities with significant risk of material adjustments within next financial year	The present value of the net defined benefit liability is affected by changes in the various factors determined by the actuarial method.
Goodwill
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of assets with significant risk of material adjustments within next financial year	The recoverable amounts of cash-generating units are determined based on value-in-use calculations to test whether impairment of goodwill has occurred.
Estimated claims for Incurred But Not Reported ("IBNR")
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of liabilities with significant risk of material adjustments within next financial year	An amount of IBNR is the total sum of estimated insurance claims that shall be paid for accidents that occurred but have not been reported to the Group and estimated insurance claims that shall be additionally paid upon resumption of payment claims. The Group calculates IBNR by applying statistical methods in risk units prescribed in Detailed Regulations on Supervision of Insurance Business, and records IBNR in reserve for outstanding claims of insurance liability. IBNR based on statistical methods requires significant accounting estimates in determining the application methodology for each accident year (PLDM, ILDM, BFM, and others) and determining the loss development factor.
Assessment of expected credit losses of financial instruments related to COVID-19
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Description of nature of assets with significant risk of material adjustments within next financial year	The proliferation of COVID-19 in 2021 negatively affected the global economy, despite various forms of government support policy. Accordingly, the Group was provided with various economic forecasting scenarios from KB Research, assuming macroeconomic changes due to the level of COVID-19 pandemic. The Group reviewed the possibilities of each scenario comprehensively, updated the forward-looking information, and reflected its effect on expected credit losses through the statistical method. In addition, for financial assets in risky industries vulnerable to the impact of COVID-19, the Group measured expected credit losses using a conservative scenario comparing to the forecasted forward-looking information and reflected credit risk that will increase in the future, such as by expanding the scope of loans subject to lifetime expected credit losses (non-impaired). The Group will continue to monitor the impact of COVID-19 on the expected credit losses by comprehensively considering the duration of the impact on the entire economy and the government’s policies.

Basis of Preparation - Summar_2

Basis of Preparation - Summary of Effect of Change in Accounting Policy to Consolidated Financial Position and Comprehensive Income (Detail) - Increase (decrease) due to changes in accounting policy [member] - KRW (₩) ₩ / shares in Units, ₩ in Millions	Jan. 01, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of information about consolidated structured entities [line items]
Increase in net defined benefit assets	₩ 25,019	₩ 46,420	₩ 47,752
Decrease in net defined benefit liabilities	17,258	0	8,659
Increase in deferred income tax liabilities	11,627	12,766	15,513
Increase in accumulated other comprehensive income	20,723	11,034	17,674
Increase in retained earnings	₩ 9,927	22,620	23,224
Increase (decrease) in general and administrative expenses		833	(18,340)	₩ 788
Increase (decrease) in income tax expense		(229)	5,043	(217)
Increase (decrease) in other comprehensive income		₩ (6,640)	₩ (3,049)	₩ 1,304
Increase (decrease) in basic earnings per share		₩ (2)	₩ 34	₩ (2)
Increase (decrease) in diluted earnings per share		₩ (2)	₩ 33	₩ (2)

Basis of Preparation - Addition

Basis of Preparation - Additional Information (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)
Basis Of Preparation Of Financial Statements [Abstract]
Insurance contract liabilities	₩ 57,165,936
Percentage of savings on insurance Contracts	28.00%
Total insurance premium income.	₩ 4,467,242

Significant Accounting Polici_4

Significant Accounting Policies - Summary of the the Correlation Between the Major Macroeconomic Variables and the Credit Risk (Details)	12 Months Ended
	Dec. 31, 2021
Domestic GDP Growth Rate
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Negative correlation
Composite Stock Index
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Negative correlation
Rate of change of construction investment
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Negative correlation
Rate of change of housing transaction price index
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Negative correlation
Interest rate spread
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Positive correlation
Private consumption growth rate
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Negative correlation
Change of call rate compared to the previous year (%p)
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Positive correlation
Rate of change of household loan
Disclosure Of Correlation Between The Major Macroeconomic Variables And The Credit Risk [Line Items]
Correlation Between The Major Macroeconomic Variables And The Credit Risk	Negative correlation

Significant Accounting Polici_5

Significant Accounting Policies - Summary of Property Plant And Equipment (Details)	12 Months Ended
	Dec. 31, 2021
Buildings
Disclosure of detailed information about property, plant and equipment [line items]
Depreciation Method Property Plant And Equipment	Straight-line
Description Of Useful Life Property Plant And Equipment	20~40 years
Leasehold improvements
Disclosure of detailed information about property, plant and equipment [line items]
Depreciation Method Property Plant And Equipment	Declining-balance/ Straight-line
Description Of Useful Life Property Plant And Equipment	4~15 years
Equipment and vehicles
Disclosure of detailed information about property, plant and equipment [line items]
Depreciation Method Property Plant And Equipment	Declining-balance/ Straight-line
Description Of Useful Life Property Plant And Equipment	3~15 years

Significant Accounting Polici_6

Significant Accounting Policies - Summary of Investment Property (Details) - Buildings	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about investment property [line items]
Depreciation Method Investment Property Cost Model	Straight-line
Description Of Useful Life Investment Property Cost Model	20~40 years

Significant Accounting Polici_7

Significant Accounting Policies - Summary of Finite Lived Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2021
Industrial property rights
Disclosure of detailed information about intangible assets [line items]
Amortisation Method Intangible Assets Other Than Goodwill	Straight-line
Description of useful life, intangible assets other than goodwill	3 ~ 19 years
Software
Disclosure of detailed information about intangible assets [line items]
Amortisation Method Intangible Assets Other Than Goodwill	Straight-line
Description of useful life, intangible assets other than goodwill	3 ~ 5 years
Value of business acquired
Disclosure of detailed information about intangible assets [line items]
Amortisation Method Intangible Assets Other Than Goodwill	Declining-balance
Description of useful life, intangible assets other than goodwill	30, 60 years
Others
Disclosure of detailed information about intangible assets [line items]
Amortisation Method Intangible Assets Other Than Goodwill	Straight-line / Declining-balance
Description of useful life, intangible assets other than goodwill	1 ~ 13 years

Financial Risk Management - Sum

Financial Risk Management - Summary of Maximum Exposure to Credit Risk (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		₩ 812,680,771	₩ 746,811,197
Financial assets
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		625,370,475	574,163,818
Due from financial institutions measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk	[1]	28,362,387	22,720,091
Due from financial institutions measured at fair value through profit or loss
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		200,742	100,094
Securities measured at fair value through profit or loss
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		63,002,692	58,415,100
Loans measured at fair value through profit or loss
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		269,296	337,983
Financial instruments indexed to the price of gold
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		113,622	89,965
Derivatives
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		3,721,370	5,545,385
Loans measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk	[1]	417,900,273	377,166,984
Securities measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		56,259,511	58,456,889
Securities measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk	[1]	44,471,628	36,870,229
Loans measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		313,604	293,409
Other financial assets
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk	[1]	10,755,350	14,167,689
Off-balance sheet items
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		187,310,296	172,647,379
Acceptances And Guarantees Contracts
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		10,199,689	8,548,928
Financial guarantee contracts
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		6,892,464	4,964,468
Commitments
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum Exposure To Credit Risk		₩ 170,218,143	₩ 159,133,983
[1]	After netting of allowance

Financial Risk Management - S_2

Financial Risk Management - Summary of Credit Quality of Loans (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		₩ 421,897,932	₩ 380,743,758
Loans measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	421,584,328	380,450,349
Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	204,852,930	175,952,265
Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	116,633,945	97,687,154
Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	75,901,506	68,769,764
Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	8,176,960	5,212,879
Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,631,888	1,706,009
Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	2,508,631	2,576,459
Retail
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	195,907,078	185,700,454
Retail | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	175,415,039	166,804,091
Retail | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	13,338,416	13,060,750
Retail | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	4,848,530	3,850,894
Retail | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	653,177	636,495
Retail | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,651,916	1,348,224
Credit card
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	20,824,320	18,797,630
Credit card | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	11,753,812	8,623,095
Credit card | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	4,946,599	6,540,030
Credit card | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	2,773,859	2,742,816
Credit card | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	690,815	264,219
Credit card | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	659,235	627,470
Loans measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		313,604	293,409
Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		313,604	293,409
Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		233,868	235,469
Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		79,736	57,940
Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
12-month expected credit losses
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		385,621,371	348,821,470
12-month expected credit losses | Loans measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	385,307,767	348,528,061
12-month expected credit losses | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	185,257,805	158,067,246
12-month expected credit losses | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	111,284,284	93,033,311
12-month expected credit losses | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	68,050,042	61,701,031
12-month expected credit losses | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	5,323,745	2,702,369
12-month expected credit losses | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	586,857	611,743
12-month expected credit losses | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	12,877	18,792
12-month expected credit losses | Retail
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	184,045,757	174,873,189
12-month expected credit losses | Retail | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	170,810,128	163,261,012
12-month expected credit losses | Retail | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	9,093,868	8,828,445
12-month expected credit losses | Retail | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	3,410,624	2,519,004
12-month expected credit losses | Retail | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	235,150	225,262
12-month expected credit losses | Retail | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	495,987	39,466
12-month expected credit losses | Credit card
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	16,004,205	15,587,626
12-month expected credit losses | Credit card | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	10,640,412	8,210,540
12-month expected credit losses | Credit card | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	3,919,053	5,831,625
12-month expected credit losses | Credit card | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,360,908	1,526,382
12-month expected credit losses | Credit card | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	82,565	16,978
12-month expected credit losses | Credit card | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,267	2,101
12-month expected credit losses | Loans measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		313,604	293,409
12-month expected credit losses | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		313,604	293,409
12-month expected credit losses | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		233,868	235,469
12-month expected credit losses | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		79,736	57,940
12-month expected credit losses | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
12-month expected credit losses | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
12-month expected credit losses | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		32,788,523	28,495,172
Non-impaired | Loans measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	32,788,523	28,495,172
Non-impaired | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	17,432,855	15,695,811
Non-impaired | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	5,345,956	4,646,801
Non-impaired | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	7,847,126	7,060,916
Non-impaired | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	2,850,266	2,507,455
Non-impaired | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,037,461	1,085,704
Non-impaired | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	352,046	394,935
Non-impaired | Retail
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	11,062,809	10,095,819
Non-impaired | Retail | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	4,593,302	3,536,290
Non-impaired | Retail | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	4,209,451	4,197,409
Non-impaired | Retail | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,414,439	1,322,878
Non-impaired | Retail | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	400,029	402,881
Non-impaired | Retail | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	445,588	636,361
Non-impaired | Credit card
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	4,292,859	2,703,542
Non-impaired | Credit card | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,113,400	412,555
Non-impaired | Credit card | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,027,546	708,405
Non-impaired | Credit card | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	1,412,951	1,216,434
Non-impaired | Credit card | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	608,250	247,241
Non-impaired | Credit card | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	130,712	118,907
Non-impaired | Loans measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Non-impaired | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		3,488,038	3,427,116
Impaired | Loans measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	3,488,038	3,427,116
Impaired | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	2,162,270	2,189,208
Impaired | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	3,705	7,042
Impaired | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	4,338	7,817
Impaired | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	2,949	3,055
Impaired | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	7,570	8,562
Impaired | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	2,143,708	2,162,732
Impaired | Retail
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	798,512	731,446
Impaired | Retail | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	11,609	6,789
Impaired | Retail | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	35,097	34,896
Impaired | Retail | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	23,467	9,012
Impaired | Retail | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	17,998	8,352
Impaired | Retail | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	710,341	672,397
Impaired | Credit card
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	527,256	506,462
Impaired | Credit card | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Impaired | Credit card | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Impaired | Credit card | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Impaired | Credit card | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Impaired | Credit card | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	527,256	506,462
Impaired | Loans measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Impaired | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Loans measured at amortized cost
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Retail
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Retail | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Retail | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Retail | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Retail | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Retail | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Credit card
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Credit card | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Credit card | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Credit card | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Credit card | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Credit card | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables	[1]	0	0
Not applying expected credit losses | Loans measured at fair value through other comprehensive income
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Corporate
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Corporate | Grade 1
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Corporate | Grade 2
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Corporate | Grade 3
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Corporate | Grade 4
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		0	0
Not applying expected credit losses | Corporate | Grade 5
Disclosure Of Financial Instruments Line Items [Line Items]
Maximum exposure to credit risk of loans or receivables		₩ 0	₩ 0
[1]	Before netting of allowance

Financial Risk Management - S_3

Financial Risk Management - Summary of Credit Quality of Loans Graded According to Internal Credit Ratings (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Grade 1 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	1.00%	1.00%
Grade 1 | Top of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	0.00%	0.00%
Grade 2 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	5.00%	5.00%
Grade 2 | Top of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	1.00%	1.00%
Grade 3 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	15.00%	15.00%
Grade 3 | Top of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	5.00%	5.00%
Grade 4 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	30.00%	30.00%
Grade 4 | Top of range [member]
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	15.00%	15.00%
Grade 5
Credit Quality Of Loans [Line Items]
Range of probability of default (%)	30.00%	30.00%
Retail | Grade 1 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	5	5
Retail | Grade 1 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	1	1
Retail | Grade 2 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	8	8
Retail | Grade 2 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	6	6
Retail | Grade 3 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	10	10
Retail | Grade 3 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	9	9
Retail | Grade 4
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	11	11
Retail | Grade 5
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	12	12
Corporate | Grade 1 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	BBB+	BBB+
Corporate | Grade 1 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	AAA	AAA
Corporate | Grade 2 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	BB	BB
Corporate | Grade 2 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	BBB	BBB
Corporate | Grade 3 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	B	B
Corporate | Grade 3 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	BB-	BB-
Corporate | Grade 4 | Bottom of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	CCC	CCC
Corporate | Grade 4 | Top of range [member]
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	B-	B-
Corporate | Grade 5
Credit Quality Of Loans [Line Items]
Credit Quality Of Loans	CC	CC

Financial Risk Management - S_4

Financial Risk Management - Summary of Quantification Extent to Collateral and other Credit Enhancements Mitigate Credit Risk Loans (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
12-month expected credit losses
Assets Held as Collateral Permitted to be Sold or Repledged at Fair Value [Line Items]
Guarantees	₩ 90,696,507	₩ 79,088,720
Deposits and savings	5,723,090	5,210,681
Property and equipment	13,205,822	11,607,675
Real estate	182,139,890	170,171,707
Total	291,765,309	266,078,783
Lifetime expected credit losses
Assets Held as Collateral Permitted to be Sold or Repledged at Fair Value [Line Items]
Guarantees	97,697,362	85,009,046
Deposits and savings	5,900,708	5,427,473
Property and equipment	14,122,770	12,536,622
Real estate	197,867,371	184,844,858
Total	315,588,211	287,817,999
Non-impaired
Assets Held as Collateral Permitted to be Sold or Repledged at Fair Value [Line Items]
Guarantees	6,604,758	5,732,814
Deposits and savings	98,389	149,745
Property and equipment	597,251	808,476
Real estate	13,736,634	12,836,286
Total	21,037,032	19,527,321
Impaired
Assets Held as Collateral Permitted to be Sold or Repledged at Fair Value [Line Items]
Guarantees	396,097	187,512
Deposits and savings	79,229	67,047
Property and equipment	319,697	120,471
Real estate	1,990,847	1,836,865
Total	₩ 2,785,870	₩ 2,211,895

Financial Risk Management - S_5

Financial Risk Management - Summary of Credit Quality of Securities Excluding Equity Securities (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		₩ 100,735,308	₩ 95,330,067
Securities measured at amortized cost
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	44,475,797	36,873,178
Securities measured at amortized cost | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	43,427,028	36,467,719
Securities measured at amortized cost | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	1,039,757	359,551
Securities measured at amortized cost | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	9,012	45,908
Securities measured at amortized cost | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Securities measured at amortized cost | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Securities measured at fair value through other comprehensive income
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		56,259,511	58,456,889
Securities measured at fair value through other comprehensive income | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		51,490,960	54,576,777
Securities measured at fair value through other comprehensive income | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		4,682,582	3,746,200
Securities measured at fair value through other comprehensive income | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		46,834	126,391
Securities measured at fair value through other comprehensive income | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		39,135	7,521
Securities measured at fair value through other comprehensive income | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
12-month expected credit losses
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		100,723,694	95,323,006
12-month expected credit losses | Securities measured at amortized cost
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	44,468,156	36,866,117
12-month expected credit losses | Securities measured at amortized cost | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	43,427,028	36,467,719
12-month expected credit losses | Securities measured at amortized cost | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	1,039,757	359,551
12-month expected credit losses | Securities measured at amortized cost | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	1,371	38,847
12-month expected credit losses | Securities measured at amortized cost | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
12-month expected credit losses | Securities measured at amortized cost | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
12-month expected credit losses | Securities measured at fair value through other comprehensive income
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		56,255,538	58,456,889
12-month expected credit losses | Securities measured at fair value through other comprehensive income | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		51,490,960	54,576,777
12-month expected credit losses | Securities measured at fair value through other comprehensive income | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		4,682,582	3,746,200
12-month expected credit losses | Securities measured at fair value through other comprehensive income | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		42,861	126,391
12-month expected credit losses | Securities measured at fair value through other comprehensive income | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		39,135	7,521
12-month expected credit losses | Securities measured at fair value through other comprehensive income | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Non-impaired
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		11,614	7,061
Non-impaired | Securities measured at amortized cost
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	7,641	7,061
Non-impaired | Securities measured at amortized cost | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Non-impaired | Securities measured at amortized cost | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Non-impaired | Securities measured at amortized cost | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	7,641	7,061
Non-impaired | Securities measured at amortized cost | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Non-impaired | Securities measured at amortized cost | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Non-impaired | Securities measured at fair value through other comprehensive income
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		3,973	0
Non-impaired | Securities measured at fair value through other comprehensive income | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Non-impaired | Securities measured at fair value through other comprehensive income | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Non-impaired | Securities measured at fair value through other comprehensive income | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		3,973	0
Non-impaired | Securities measured at fair value through other comprehensive income | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Non-impaired | Securities measured at fair value through other comprehensive income | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired | Securities measured at amortized cost
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Impaired | Securities measured at amortized cost | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Impaired | Securities measured at amortized cost | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Impaired | Securities measured at amortized cost | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Impaired | Securities measured at amortized cost | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Impaired | Securities measured at amortized cost | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Impaired | Securities measured at fair value through other comprehensive income
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired | Securities measured at fair value through other comprehensive income | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired | Securities measured at fair value through other comprehensive income | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired | Securities measured at fair value through other comprehensive income | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired | Securities measured at fair value through other comprehensive income | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Impaired | Securities measured at fair value through other comprehensive income | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses | Securities measured at amortized cost
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Not applying expected credit losses | Securities measured at amortized cost | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Not applying expected credit losses | Securities measured at amortized cost | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Not applying expected credit losses | Securities measured at amortized cost | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Not applying expected credit losses | Securities measured at amortized cost | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Not applying expected credit losses | Securities measured at amortized cost | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities	[1]	0	0
Not applying expected credit losses | Securities measured at fair value through other comprehensive income
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses | Securities measured at fair value through other comprehensive income | Grade 1
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses | Securities measured at fair value through other comprehensive income | Grade 2
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses | Securities measured at fair value through other comprehensive income | Grade 3
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses | Securities measured at fair value through other comprehensive income | Grade 4
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		0	0
Not applying expected credit losses | Securities measured at fair value through other comprehensive income | Grade 5
Financial Investments Securities Excluding Equity Securities [Line Items]
Financial Investments Securities Excluding Equity Securities		₩ 0	₩ 0
[1]	Before netting of allowance

Financial Risk Management - S_6

Financial Risk Management - Summary of Credit Quality of Securities Excluding Equity Securities According to Credit Ratings External Rating Agencies (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
KIS | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA0	AA0
KIS | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AAA	AAA
KIS | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A-	A-
KIS | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA-	AA-
KIS | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB0	BBB0
KIS | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB+	BBB+
KIS | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB0	BB0
KIS | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB-	BBB-
KIS | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB-	BB-
NICE P&I | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA0	AA0
NICE P&I | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AAA	AAA
NICE P&I | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A-	A-
NICE P&I | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA-	AA-
NICE P&I | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB0	BBB0
NICE P&I | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB+	BBB+
NICE P&I | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB0	BB0
NICE P&I | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB-	BBB-
NICE P&I | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB-	BB-
KAP | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA0	AA0
KAP | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AAA	AAA
KAP | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A-	A-
KAP | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA-	AA-
KAP | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB0	BBB0
KAP | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB+	BBB+
KAP | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB0	BB0
KAP | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB-	BBB-
KAP | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB-	BB-
FnPricing Inc. | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA0	AA0
FnPricing Inc. | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AAA	AAA
FnPricing Inc. | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A-	A-
FnPricing Inc. | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AA-	AA-
FnPricing Inc. | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB0	BBB0
FnPricing Inc. | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB+	BBB+
FnPricing Inc. | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB0	BB0
FnPricing Inc. | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB-	BBB-
FnPricing Inc. | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB-	BB-
S&P | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A-	A-
S&P | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AAA	AAA
S&P | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB-	BBB-
S&P | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB+	BBB+
S&P | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB	BB
S&P | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB+	BB+
S&P | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	B+	B+
S&P | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB-	BB-
S&P | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	B	B
Fitch-IBCA | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A-	A-
Fitch-IBCA | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	AAA	AAA
Fitch-IBCA | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB-	BBB-
Fitch-IBCA | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BBB+	BBB+
Fitch-IBCA | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB	BB
Fitch-IBCA | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB+	BB+
Fitch-IBCA | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	B+	B+
Fitch-IBCA | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	BB-	BB-
Fitch-IBCA | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	B	B
Moody's | Grade 1 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	A3	A3
Moody's | Grade 1 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	Aaa	Aaa
Moody's | Grade 2 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	Baa3	Baa3
Moody's | Grade 2 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	Baa1	Baa1
Moody's | Grade 3 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	Ba2	Ba2
Moody's | Grade 3 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	Ba1	Ba1
Moody's | Grade 4 | Bottom of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	B1	B1
Moody's | Grade 4 | Top of range [member]
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	Ba3	Ba3
Moody's | Grade 5
Credit Ratings By External Agencies [Line Items]
Credit Ratings By External Agencies	B2	B2

Financial Risk Management - S_7

Financial Risk Management - Summary of Credit Quality Due Financial Institutions (Details) - Due from financial institutions measured at amortized cost - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	₩ 28,365,356	₩ 22,723,354
Grade 1
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	26,548,145	21,437,207
Grade 2
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	1,305,539	334,371
Grade 3
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	61,177	458,831
Grade 4
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	439,511	479,142
Grade 5
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	10,984	13,803
12-month expected credit losses
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	28,365,356	22,709,972
12-month expected credit losses | Grade 1
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	26,548,145	21,437,207
12-month expected credit losses | Grade 2
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	1,305,539	334,371
12-month expected credit losses | Grade 3
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	61,177	445,732
12-month expected credit losses | Grade 4
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	439,511	479,142
12-month expected credit losses | Grade 5
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	10,984	13,520
Non-impaired
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	13,099
Non-impaired | Grade 1
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Non-impaired | Grade 2
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Non-impaired | Grade 3
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	13,099
Non-impaired | Grade 4
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Non-impaired | Grade 5
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Impaired
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	283
Impaired | Grade 1
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Impaired | Grade 2
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Impaired | Grade 3
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Impaired | Grade 4
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Impaired | Grade 5
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	283
Not applying expected credit losses
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Not applying expected credit losses | Grade 1
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Not applying expected credit losses | Grade 2
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Not applying expected credit losses | Grade 3
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Not applying expected credit losses | Grade 4
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	0	0
Not applying expected credit losses | Grade 5
Cash And Cash Equivalents Line Items [Line Items]
Due from financial institutions	[1]	₩ 0	₩ 0
[1]	Before netting of allowance

Financial Risk Management - S_8

Financial Risk Management - Summary of Quantification Extent Collateral and Credit Enhancements Mitigate Credit Risk Derivatives (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Collateral Mitigate Credit Risk Of Derivative Abstract [Abstract]
Deposits and savings, securities and others	₩ 834,175	₩ 1,651,322

Financial Risk Management - S_9

Financial Risk Management - Summary of Groups Regional Loans (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 418,483,173	₩ 377,798,376
Korea
Group Regional Loans [Line Items]
Loans And Receivables	[1]	392,936,712	359,031,298
Europe
Group Regional Loans [Line Items]
Loans And Receivables	[1]	2,644,802	2,031,838
China
Group Regional Loans [Line Items]
Loans And Receivables	[1]	6,744,749	4,498,902
Japan
Group Regional Loans [Line Items]
Loans And Receivables	[1]	1,037,320	922,209
United States
Group Regional Loans [Line Items]
Loans And Receivables	[1]	3,527,610	1,940,888
Cambodia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	5,031,140	3,635,434
Indonesia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	4,591,811	4,481,708
Others
Group Regional Loans [Line Items]
Loans And Receivables	[1]	1,969,029	1,256,099
Loans
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 422,167,228	₩ 381,081,739
%	[1]	100.00%	100.00%
Loans | Korea
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 395,589,968	₩ 361,465,000
%	[1]	93.70%	94.85%
Loans | Europe
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 2,673,817	₩ 2,042,979
%	[1]	0.63%	0.54%
Loans | China
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 6,779,065	₩ 4,519,391
%	[1]	1.61%	1.19%
Loans | Japan
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 1,039,547	₩ 923,458
%	[1]	0.25%	0.24%
Loans | United States
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 3,555,723	₩ 1,962,377
%	[1]	0.84%	0.51%
Loans | Cambodia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 5,101,800	₩ 3,725,086
%	[1]	1.21%	0.98%
Loans | Indonesia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 5,432,956	₩ 5,181,655
%	[1]	1.29%	1.36%
Loans | Others
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 1,994,352	₩ 1,261,793
%	[1]	0.47%	0.33%
Allowances
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ (3,684,055)	₩ (3,283,363)
Allowances | Korea
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(2,653,256)	(2,433,702)
Allowances | Europe
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(29,015)	(11,141)
Allowances | China
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(34,316)	(20,489)
Allowances | Japan
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(2,227)	(1,249)
Allowances | United States
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(28,113)	(21,489)
Allowances | Cambodia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(70,660)	(89,652)
Allowances | Indonesia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(841,145)	(699,947)
Allowances | Others
Group Regional Loans [Line Items]
Loans And Receivables	[1]	(25,323)	(5,694)
Retail | Loans
Group Regional Loans [Line Items]
Loans And Receivables	[1]	195,907,078	185,700,453
Retail | Loans | Korea
Group Regional Loans [Line Items]
Loans And Receivables	[1]	191,601,232	182,344,832
Retail | Loans | Europe
Group Regional Loans [Line Items]
Loans And Receivables	[1]	0	0
Retail | Loans | China
Group Regional Loans [Line Items]
Loans And Receivables	[1]	34,982	0
Retail | Loans | Japan
Group Regional Loans [Line Items]
Loans And Receivables	[1]	86	94
Retail | Loans | United States
Group Regional Loans [Line Items]
Loans And Receivables	[1]	0	0
Retail | Loans | Cambodia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	1,985,808	1,444,906
Retail | Loans | Indonesia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	1,666,850	1,483,345
Retail | Loans | Others
Group Regional Loans [Line Items]
Loans And Receivables	[1]	618,120	427,276
Corporate | Loans
Group Regional Loans [Line Items]
Loans And Receivables	[1]	205,435,830	176,583,656
Corporate | Loans | Korea
Group Regional Loans [Line Items]
Loans And Receivables	[1]	183,222,201	160,385,598
Corporate | Loans | Europe
Group Regional Loans [Line Items]
Loans And Receivables	[1]	2,673,817	2,042,979
Corporate | Loans | China
Group Regional Loans [Line Items]
Loans And Receivables	[1]	6,743,756	4,518,737
Corporate | Loans | Japan
Group Regional Loans [Line Items]
Loans And Receivables	[1]	1,039,453	923,354
Corporate | Loans | United States
Group Regional Loans [Line Items]
Loans And Receivables	[1]	3,555,723	1,962,377
Corporate | Loans | Cambodia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	3,115,992	2,280,180
Corporate | Loans | Indonesia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	3,710,586	3,637,351
Corporate | Loans | Others
Group Regional Loans [Line Items]
Loans And Receivables	[1]	1,374,302	833,080
Credit card | Loans
Group Regional Loans [Line Items]
Loans And Receivables	[1]	20,824,320	18,797,630
Credit card | Loans | Korea
Group Regional Loans [Line Items]
Loans And Receivables	[1]	20,766,535	18,734,570
Credit card | Loans | Europe
Group Regional Loans [Line Items]
Loans And Receivables	[1]	0	0
Credit card | Loans | China
Group Regional Loans [Line Items]
Loans And Receivables	[1]	327	654
Credit card | Loans | Japan
Group Regional Loans [Line Items]
Loans And Receivables	[1]	8	10
Credit card | Loans | United States
Group Regional Loans [Line Items]
Loans And Receivables	[1]	0	0
Credit card | Loans | Cambodia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	0	0
Credit card | Loans | Indonesia
Group Regional Loans [Line Items]
Loans And Receivables	[1]	55,520	60,959
Credit card | Loans | Others
Group Regional Loans [Line Items]
Loans And Receivables	[1]	₩ 1,930	₩ 1,437
[1]	Amount includes loans measured at fair value through profit or loss, other comprehensive income, and amortized cost.

Financial Risk Management - _10

Financial Risk Management - Summary of Groups Industrial Corporate Loans (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 203,548,914	₩ 174,911,877
Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 205,435,830	₩ 176,583,656
%	100.00%	100.00%
Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (1,886,916)	₩ (1,671,779)
Financial institutions
Industrial Corporate Loans [Line Items]
Corporate Loans	22,027,039	16,023,256
Financial institutions | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 22,059,895	₩ 16,044,243
%	10.74%	9.09%
Financial institutions | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (32,856)	₩ (20,987)
Manufacturing
Industrial Corporate Loans [Line Items]
Corporate Loans	48,639,156	45,411,246
Manufacturing | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 49,149,918	₩ 45,884,606
%	23.92%	25.98%
Manufacturing | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (510,762)	₩ (473,360)
Service
Industrial Corporate Loans [Line Items]
Corporate Loans	86,475,823	75,616,784
Service | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 86,926,095	₩ 76,001,877
%	42.31%	43.04%
Service | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (450,272)	₩ (385,093)
Wholesale & Retail
Industrial Corporate Loans [Line Items]
Corporate Loans	26,604,706	22,888,436
Wholesale & Retail | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 26,862,247	₩ 23,129,457
%	13.08%	13.10%
Wholesale & Retail | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (257,541)	₩ (241,021)
Construction
Industrial Corporate Loans [Line Items]
Corporate Loans	5,454,668	4,206,995
Construction | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 5,683,471	₩ 4,397,814
%	2.77%	2.49%
Construction | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (228,803)	₩ (190,819)
Public sector
Industrial Corporate Loans [Line Items]
Corporate Loans	1,975,907	1,585,531
Public sector | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 2,070,960	₩ 1,660,370
%	1.01%	0.94%
Public sector | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (95,053)	₩ (74,839)
Others
Industrial Corporate Loans [Line Items]
Corporate Loans	12,371,615	9,179,629
Others | Loans
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ 12,683,244	₩ 9,465,289
%	6.17%	5.36%
Others | Allowances
Industrial Corporate Loans [Line Items]
Corporate Loans	₩ (311,629)	₩ (285,660)

Financial Risk Management - _11

Financial Risk Management - Summary of Groups Retail and Credit Card Loans (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ 214,934,259	₩ 202,886,499
Loans
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ 216,731,398	₩ 204,498,083
Portionof Retail And Credit Card Loans	100.00%	100.00%
Allowances
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ (1,797,139)	₩ (1,611,584)
Housing
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	93,624,055	87,250,897
Housing | Loans
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ 93,695,479	₩ 87,312,052
Portionof Retail And Credit Card Loans	43.23%	42.70%
Housing | Allowances
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ (71,424)	₩ (61,155)
General
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	101,278,028	97,539,468
General | Loans
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ 102,211,599	₩ 98,388,401
Portionof Retail And Credit Card Loans	47.16%	48.11%
General | Allowances
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ (933,571)	₩ (848,933)
Credit card
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	20,032,176	18,096,134
Credit card | Loans
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ 20,824,320	₩ 18,797,630
Portionof Retail And Credit Card Loans	9.61%	9.19%
Credit card | Allowances
Retail And Credit Card Loans [Line Items]
Retail And Credit Card Loans	₩ (792,144)	₩ (701,496)

Financial Risk Management - _12

Financial Risk Management - Summary of Credit Risk Industrial Concentration Financial Institutions and Securities Excluding Equity Securities Derivative (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 196,018,330	₩ 182,107,787
Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	196,025,468	182,114,000
Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(7,138)	(6,213)
Due From Financial Institutions At Amortized Cost
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	28,362,387	22,720,091
Due From Financial Institutions At Amortized Cost | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	28,362,387	22,720,091
Due From Financial Institutions At Amortized Cost | Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 28,365,356	₩ 22,723,354
%	100.00%	100.00%
Due From Financial Institutions At Amortized Cost | Gross Carrying Amount [Member] | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 28,365,356	₩ 22,723,354
%	100.00%	100.00%
Due From Financial Institutions At Amortized Cost | Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ (2,969)	₩ (3,263)
Due From Financial Institutions At Amortized Cost | Allowances | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(2,969)	(3,263)
Due from financial institutions measured at fair value through profit or loss
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	200,742	100,094
Due from financial institutions measured at fair value through profit or loss | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	200,742	100,094
Due from financial institutions measured at fair value through profit or loss | Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 200,742	₩ 100,094
%	100.00%	100.00%
Due from financial institutions measured at fair value through profit or loss | Gross Carrying Amount [Member] | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 200,742	₩ 100,094
%	100.00%	100.00%
Due from financial institutions measured at fair value through profit or loss | Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Due from financial institutions measured at fair value through profit or loss | Allowances | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through profit or loss
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	63,002,692	58,415,100
Securities measured at fair value through profit or loss | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	16,101,187	16,902,284
Securities measured at fair value through profit or loss | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	35,025,800	34,244,398
Securities measured at fair value through profit or loss | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	11,875,705	7,268,418
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 63,002,692	₩ 58,415,100
%	100.00%	100.00%
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member] | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 16,101,187	₩ 16,902,284
%	25.56%	28.94%
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member] | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 35,025,800	₩ 34,244,398
%	55.59%	58.62%
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member] | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 11,875,705	₩ 7,268,418
%	18.85%	12.44%
Securities measured at fair value through profit or loss | Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Securities measured at fair value through profit or loss | Allowances | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through profit or loss | Allowances | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through profit or loss | Allowances | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Derivative financial assets
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	3,721,370	5,545,385
Derivative financial assets | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	6,985	44,670
Derivative financial assets | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	3,554,783	4,925,535
Derivative financial assets | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	159,602	575,180
Derivative financial assets | Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 3,721,370	₩ 5,545,385
%	100.00%	100.00%
Derivative financial assets | Gross Carrying Amount [Member] | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 6,985	₩ 44,670
%	0.19%	0.81%
Derivative financial assets | Gross Carrying Amount [Member] | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 3,554,783	₩ 4,925,535
%	95.52%	88.82%
Derivative financial assets | Gross Carrying Amount [Member] | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 159,602	₩ 575,180
%	4.29%	10.37%
Derivative financial assets | Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Derivative financial assets | Allowances | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Derivative financial assets | Allowances | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Derivative financial assets | Allowances | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through other comprehensive income
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	56,259,511	58,456,889
Securities measured at fair value through other comprehensive income | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	24,609,458	26,205,864
Securities measured at fair value through other comprehensive income | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	22,669,379	24,847,602
Securities measured at fair value through other comprehensive income | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	8,980,674	7,403,423
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 56,259,511	₩ 58,456,889
%	100.00%	100.00%
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member] | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 24,609,458	₩ 26,205,864
%	43.74%	44.83%
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member] | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 22,669,379	₩ 24,847,602
%	40.29%	42.51%
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member] | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 8,980,674	₩ 7,403,423
%	15.97%	12.66%
Securities measured at fair value through other comprehensive income | Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Securities measured at fair value through other comprehensive income | Allowances | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through other comprehensive income | Allowances | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through other comprehensive income | Allowances | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at amortized cost
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	44,471,628	36,870,228
Securities measured at amortized cost | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	31,996,146	24,018,854
Securities measured at amortized cost | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	10,447,160	11,017,436
Securities measured at amortized cost | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	2,028,322	1,833,938
Securities measured at amortized cost | Gross Carrying Amount [Member]
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 44,475,797	₩ 36,873,178
%	100.00%	100.00%
Securities measured at amortized cost | Gross Carrying Amount [Member] | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 31,996,180	₩ 24,018,884
%	71.94%	65.14%
Securities measured at amortized cost | Gross Carrying Amount [Member] | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 10,450,497	₩ 11,019,911
%	23.50%	29.89%
Securities measured at amortized cost | Gross Carrying Amount [Member] | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 2,029,120	₩ 1,834,383
%	4.56%	4.97%
Securities measured at amortized cost | Allowances
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ (4,169)	₩ (2,950)
Securities measured at amortized cost | Allowances | Government and government funded institutions
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(34)	(30)
Securities measured at amortized cost | Allowances | Finance and insurance
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(3,337)	(2,475)
Securities measured at amortized cost | Allowances | Others
GroupIndustrial Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ (798)	₩ (445)

Financial Risk Management - _13

Financial Risk Management - Summary of Credit Risk Regional Concentration due Financial Institutions and Securities Excluding Equity Securities Derivative (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 196,018,330	₩ 182,107,787
Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	196,025,468	182,114,000
Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(7,138)	(6,213)
Due from financial institutions measured at amortized cost
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	28,362,387	22,720,091
Due from financial institutions measured at amortized cost | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	21,050,655	16,535,242
Due from financial institutions measured at amortized cost | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	2,875,748	2,030,331
Due from financial institutions measured at amortized cost | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	4,435,984	4,154,518
Due from financial institutions measured at amortized cost | Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 28,365,356	₩ 22,723,354
%	100.00%	100.00%
Due from financial institutions measured at amortized cost | Gross Carrying Amount [Member] | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 21,051,229	₩ 16,535,849
%	74.21%	72.78%
Due from financial institutions measured at amortized cost | Gross Carrying Amount [Member] | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 2,875,884	₩ 2,030,614
%	10.14%	8.94%
Due from financial institutions measured at amortized cost | Gross Carrying Amount [Member] | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 4,438,243	₩ 4,156,891
%	15.65%	18.28%
Due from financial institutions measured at amortized cost | Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ (2,969)	₩ (3,263)
Due from financial institutions measured at amortized cost | Allowances | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(574)	(607)
Due from financial institutions measured at amortized cost | Allowances | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(136)	(283)
Due from financial institutions measured at amortized cost | Allowances | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(2,259)	(2,373)
Due from financial institutions measured at fair value through profit or loss
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	200,742	100,094
Due from financial institutions measured at fair value through profit or loss | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	200,742	100,094
Due from financial institutions measured at fair value through profit or loss | Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 200,742	₩ 100,094
%	100.00%	100.00%
Due from financial institutions measured at fair value through profit or loss | Gross Carrying Amount [Member] | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 200,742	₩ 100,094
%	100.00%	100.00%
Due from financial institutions measured at fair value through profit or loss | Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Due from financial institutions measured at fair value through profit or loss | Allowances | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through profit or loss
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	63,002,692	58,415,100
Securities measured at fair value through profit or loss | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	56,920,225	53,991,978
Securities measured at fair value through profit or loss | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	3,334,888	2,370,538
Securities measured at fair value through profit or loss | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	2,747,579	2,052,584
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 63,002,692	₩ 58,415,100
%	100.00%	100.00%
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member] | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 56,920,225	₩ 53,991,978
%	90.35%	92.43%
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member] | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 3,334,888	₩ 2,370,538
%	5.29%	4.06%
Securities measured at fair value through profit or loss | Gross Carrying Amount [Member] | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 2,747,579	₩ 2,052,584
%	4.36%	3.51%
Securities measured at fair value through profit or loss | Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Securities measured at fair value through profit or loss | Allowances | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through profit or loss | Allowances | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through profit or loss | Allowances | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Derivative financial assets
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	3,721,370	5,545,385
Derivative financial assets | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	1,639,657	2,885,214
Derivative financial assets | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	753,896	706,866
Derivative financial assets | France
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	370,787
Derivative financial assets | Singapore
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	117,964
Derivative financial assets | Japan
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	96,438
Derivative financial assets | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	742,628	1,953,305
Derivative financial assets | Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 3,721,370	₩ 5,545,385
%	100.00%	100.00%
Derivative financial assets | Gross Carrying Amount [Member] | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 1,639,657	₩ 2,885,214
%	44.06%	52.03%
Derivative financial assets | Gross Carrying Amount [Member] | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 753,896	₩ 706,866
%	20.26%	12.75%
Derivative financial assets | Gross Carrying Amount [Member] | France
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 370,787
%	9.96%
Derivative financial assets | Gross Carrying Amount [Member] | Singapore
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 117,964
%	3.17%
Derivative financial assets | Gross Carrying Amount [Member] | Japan
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 96,438
%	2.59%
Derivative financial assets | Gross Carrying Amount [Member] | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 742,628	₩ 1,953,305
%	19.96%	35.22%
Derivative financial assets | Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Derivative financial assets | Allowances | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Derivative financial assets | Allowances | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Derivative financial assets | Allowances | France
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0
Derivative financial assets | Allowances | Singapore
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0
Derivative financial assets | Allowances | Japan
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0
Derivative financial assets | Allowances | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through other comprehensive income
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	56,259,511	58,456,889
Securities measured at fair value through other comprehensive income | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	51,484,332	54,786,461
Securities measured at fair value through other comprehensive income | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	1,417,898	942,151
Securities measured at fair value through other comprehensive income | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	3,357,281	2,728,277
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 56,259,511	₩ 58,456,889
%	100.00%	100.00%
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member] | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 51,484,332	₩ 54,786,461
%	91.51%	93.72%
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member] | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 1,417,898	₩ 942,151
%	2.52%	1.61%
Securities measured at fair value through other comprehensive income | Gross Carrying Amount [Member] | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 3,357,281	₩ 2,728,277
%	5.97%	4.67%
Securities measured at fair value through other comprehensive income | Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 0	₩ 0
Securities measured at fair value through other comprehensive income | Allowances | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through other comprehensive income | Allowances | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at fair value through other comprehensive income | Allowances | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	0	0
Securities measured at amortized cost
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	44,471,628	36,870,228
Securities measured at amortized cost | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	41,908,971	34,543,589
Securities measured at amortized cost | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	1,187,961	1,049,146
Securities measured at amortized cost | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	1,374,696	1,277,493
Securities measured at amortized cost | Gross Carrying Amount [Member]
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 44,475,797	₩ 36,873,178
%	100.00%	100.00%
Securities measured at amortized cost | Gross Carrying Amount [Member] | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 41,912,154	₩ 34,545,872
%	94.24%	93.69%
Securities measured at amortized cost | Gross Carrying Amount [Member] | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 1,188,427	₩ 1,049,387
%	2.67%	2.85%
Securities measured at amortized cost | Gross Carrying Amount [Member] | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ 1,375,216	₩ 1,277,919
%	3.09%	3.46%
Securities measured at amortized cost | Allowances
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ (4,169)	₩ (2,950)
Securities measured at amortized cost | Allowances | Korea
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(3,183)	(2,283)
Securities measured at amortized cost | Allowances | United States
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	(466)	(241)
Securities measured at amortized cost | Allowances | Others
Groups Regional Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives [Line Items]
Due From Financial Institutions And Securities Excluding Equity Securities And Derivatives	₩ (520)	₩ (426)

Financial Risk Management - _14

Financial Risk Management - Summary of Remaining Contractual Maturity of Financial Assets and Liabilities Excluding Derivatives Cash Flow Hedging (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		₩ 544,276,680	₩ 500,715,969
Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	9,149,396	9,784,107
Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	2,939,584	2,025,952
Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	3,509,789	5,014,072
Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	85,546	104,697
Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	374,922,963	341,482,538
Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		57,381,997	50,160,304
Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		70,641,727	65,678,525
Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		608,382	591,952
Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		25,037,296	25,873,822
Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		187,310,296	172,647,379
Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	170,218,143	159,133,983
Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		10,199,689	8,548,928
Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	6,892,464	4,964,468
On demand | Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		228,951,596	208,505,795
On demand | Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	9,149,396	9,784,107
On demand | Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	2,939,584	2,025,952
On demand | Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	3,509,789	5,014,072
On demand | Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	0	0
On demand | Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	204,616,202	182,111,594
On demand | Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		8,504,084	9,333,894
On demand | Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		14,528	18,105
On demand | Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		139	205
On demand | Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		217,874	217,866
On demand | Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		187,310,296	172,647,379
On demand | Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	170,218,143	159,133,983
On demand | Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		10,199,689	8,548,928
On demand | Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	6,892,464	4,964,468
Up to 1 month | Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		60,790,876	61,923,070
Up to 1 month | Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
Up to 1 month | Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
Up to 1 month | Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
Up to 1 month | Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	11,355	3,123
Up to 1 month | Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	16,556,213	17,207,360
Up to 1 month | Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		17,807,785	17,730,230
Up to 1 month | Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		3,438,621	2,806,105
Up to 1 month | Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		23,387	22,372
Up to 1 month | Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		22,953,515	24,153,880
Up to 1 month | Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
Up to 1 month | Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	0	0
Up to 1 month | Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
Up to 1 month | Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	0	0
1-3 montshs | Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		42,524,313	40,432,762
1-3 montshs | Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
1-3 montshs | Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
1-3 montshs | Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
1-3 montshs | Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	9,993	4,120
1-3 montshs | Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	31,123,968	28,485,765
1-3 montshs | Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		5,825,350	4,923,897
1-3 montshs | Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		5,318,699	6,769,859
1-3 montshs | Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		42,406	40,376
1-3 montshs | Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		203,897	208,745
1-3 montshs | Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
1-3 montshs | Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	0	0
1-3 montshs | Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
1-3 montshs | Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	0	0
3-12 months | Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		146,041,876	124,371,254
3-12 months | Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
3-12 months | Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
3-12 months | Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
3-12 months | Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	31,135	62,147
3-12 months | Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	111,140,222	99,879,946
3-12 months | Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		13,861,238	9,617,100
3-12 months | Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		20,496,869	14,330,686
3-12 months | Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		157,536	152,084
3-12 months | Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		354,876	329,291
3-12 months | Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
3-12 months | Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	0	0
3-12 months | Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
3-12 months | Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	0	0
1~5 years | Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		56,700,841	56,378,541
1~5 years | Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
1~5 years | Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
1~5 years | Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
1~5 years | Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	31,640	35,198
1~5 years | Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	10,157,238	12,133,364
1~5 years | Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		10,380,171	7,616,809
1~5 years | Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		34,863,044	35,512,544
1~5 years | Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		334,359	332,033
1~5 years | Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		934,389	748,593
1~5 years | Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
1~5 years | Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	0	0
1~5 years | Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
1~5 years | Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	0	0
Over 5 years | Financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		9,267,178	9,104,547
Over 5 years | Financial liabilities designated at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
Over 5 years | Financial liabilities at fair value through profit or loss
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
Over 5 years | Derivatives held for trading
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[1]	0	0
Over 5 years | Derivatives held for hedging
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[2]	1,423	109
Over 5 years | Deposits
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk	[3]	1,329,120	1,664,509
Over 5 years | Borrowings Related To Liquidity Risk
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		1,003,369	938,374
Over 5 years | Debentures
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		6,509,966	6,241,226
Over 5 years | Lease liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		50,555	44,882
Over 5 years | Other financial liabilities
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Financial Liability Held For Managing Liquidity Risk		372,745	215,447
Over 5 years | Off-balance sheet items
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
Over 5 years | Commitments
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[4]	0	0
Over 5 years | Acceptances And Guarantees Contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk		0	0
Over 5 years | Financial guarantee contracts
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]
Off Balance Sheet Item Held For Managing Liquidity Risk	[5]	₩ 0	₩ 0
[1]	Financial liabilities measured or designated at fair value through profit or loss and derivatives held for trading are not managed by contractual maturity because they are expected to be traded or redeemed before maturity. Therefore, the carrying amounts of those financial instruments are included in the ‘On demand’ category.
[2]	Cash flows of derivatives held for hedging are shown at net amount of cash inflows and outflows by remaining contractual maturity.
[3]	Deposits that are contractually repayable on demand or on short notice are included in the ‘On demand’ category.
[4]	Commitments are included in the ‘On demand’ category because payments can be requested at any time.
[5]	Cash flows under financial guarantee contracts are classified based on the earliest period that the contract can be executed.

Financial Risk Management - _15

Financial Risk Management - Summary of Cash Flows of Derivatives Held for Cash Flow Hedging (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of maturity analysis for derivative financial liabilities [line items]
Cash flow to be received (paid) of net-settled derivatives	₩ 21,800	₩ (46,847)
Cash flow to be received of gross-settled derivatives	3,155,811	3,112,609
Cash flow to be paid of gross-settled derivatives	(2,519,247)	(2,450,185)
Up to 1 month
Disclosure of maturity analysis for derivative financial liabilities [line items]
Cash flow to be received (paid) of net-settled derivatives	(102)	(1,082)
Cash flow to be received of gross-settled derivatives	126,429	85,064
Cash flow to be paid of gross-settled derivatives	(130,919)	(88,952)
1-3 montshs
Disclosure of maturity analysis for derivative financial liabilities [line items]
Cash flow to be received (paid) of net-settled derivatives	(2,647)	(5,569)
Cash flow to be received of gross-settled derivatives	325,664	220,339
Cash flow to be paid of gross-settled derivatives	(329,546)	(221,261)
3-12 months
Disclosure of maturity analysis for derivative financial liabilities [line items]
Cash flow to be received (paid) of net-settled derivatives	(252)	(15,132)
Cash flow to be received of gross-settled derivatives	619,100	517,929
Cash flow to be paid of gross-settled derivatives	(630,023)	(523,442)
1~5 years
Disclosure of maturity analysis for derivative financial liabilities [line items]
Cash flow to be received (paid) of net-settled derivatives	24,812	(25,354)
Cash flow to be received of gross-settled derivatives	2,084,618	2,289,277
Cash flow to be paid of gross-settled derivatives	(1,428,759)	(1,616,530)
Over 5 years
Disclosure of maturity analysis for derivative financial liabilities [line items]
Cash flow to be received (paid) of net-settled derivatives	(11)	290
Cash flow to be received of gross-settled derivatives	0	0
Cash flow to be paid of gross-settled derivatives	₩ 0	₩ 0

Financial Risk Management - Det

Financial Risk Management - Details of Financial Instruments that Have Not Been Converted to Alternative Interest Rate Benchmark (Details) ₩ in Millions	Dec. 31, 2021KRW (₩)	[1]
Financial assets at fair value through profit or loss [Member]
Details of financial instruments that have not been converted to alternative interest rate benchmark [Line Items]
Exposure amount about USD LIBOR	₩ 4,695
Other exposure amount	0
Financial liabilities designated at fair value through profit or loss [Member]
Details of financial instruments that have not been converted to alternative interest rate benchmark [Line Items]
Exposure amount about USD LIBOR	92,833
Other exposure amount	0
Financial Investments [Member]
Details of financial instruments that have not been converted to alternative interest rate benchmark [Line Items]
Exposure amount about USD LIBOR	231,702
Other exposure amount	0
Loans [Member]
Details of financial instruments that have not been converted to alternative interest rate benchmark [Line Items]
Exposure amount about USD LIBOR	3,734,401
Other exposure amount	55,800
Borrowings and debentures [Member]
Details of financial instruments that have not been converted to alternative interest rate benchmark [Line Items]
Exposure amount about USD LIBOR	867,731
Other exposure amount	0
Derivative financial instruments [Member]
Details of financial instruments that have not been converted to alternative interest rate benchmark [Line Items]
Exposure amount about USD LIBOR	1,398,607
Other exposure amount	₩ 0
[1]	Financial instruments to be expired before transition to alternative interest rate benchmark are excluded, and non-derivative financial instruments are the carrying amount and others are the nominal amount.

Financial Risk Management - _16

Financial Risk Management - Summary of Value at Risk (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Kookmin Bank | Average
Value At Risk Line Items [Line Items]
Value at risk	₩ 40,915	₩ 105,428
Kookmin Bank | Minimum
Value At Risk Line Items [Line Items]
Value at risk	15,986	14,225
Kookmin Bank | Maximum
Value At Risk Line Items [Line Items]
Value at risk	115,347	158,798
Kookmin Bank | Ending
Value At Risk Line Items [Line Items]
Value at risk	30,530	117,634
Kookmin Bank | Interest rate risk | Average
Value At Risk Line Items [Line Items]
Value at risk	20,051	59,147
Kookmin Bank | Interest rate risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	6,372	9,588
Kookmin Bank | Interest rate risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	55,670	105,983
Kookmin Bank | Interest rate risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	16,534	50,795
Kookmin Bank | Stock price risk | Average
Value At Risk Line Items [Line Items]
Value at risk	9,067	15,379
Kookmin Bank | Stock price risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	4,537	3,787
Kookmin Bank | Stock price risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	24,824	24,821
Kookmin Bank | Stock price risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	5,513	24,821
Kookmin Bank | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	27,886	36,281
Kookmin Bank | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	17,820	5,302
Kookmin Bank | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	49,264	67,766
Kookmin Bank | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	21,522	49,338
Kookmin Bank | Deduction of diversification effect | Ending
Value At Risk Line Items [Line Items]
Value at risk	(13,039)	(7,320)
KB Securities Co., Ltd. | Average
Value At Risk Line Items [Line Items]
Value at risk	988,165	938,968
KB Securities Co., Ltd. | Minimum
Value At Risk Line Items [Line Items]
Value at risk	871,330	797,452
KB Securities Co., Ltd. | Maximum
Value At Risk Line Items [Line Items]
Value at risk	1,143,838	1,095,145
KB Securities Co., Ltd. | Ending
Value At Risk Line Items [Line Items]
Value at risk	1,122,782	979,949
KB Securities Co., Ltd. | Interest rate risk | Average
Value At Risk Line Items [Line Items]
Value at risk	724,482	656,651
KB Securities Co., Ltd. | Interest rate risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	657,094	575,053
KB Securities Co., Ltd. | Interest rate risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	821,864	755,704
KB Securities Co., Ltd. | Interest rate risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	821,864	755,704
KB Securities Co., Ltd. | Stock price risk | Average
Value At Risk Line Items [Line Items]
Value at risk	249,320	267,186
KB Securities Co., Ltd. | Stock price risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	207,425	213,639
KB Securities Co., Ltd. | Stock price risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	299,221	317,478
KB Securities Co., Ltd. | Stock price risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	278,356	213,639
KB Securities Co., Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	14,275	15,113
KB Securities Co., Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	6,808	8,759
KB Securities Co., Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	22,543	21,907
KB Securities Co., Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	22,543	10,588
KB Securities Co., Ltd. | Commodity risk | Average
Value At Risk Line Items [Line Items]
Value at risk	88	18
KB Securities Co., Ltd. | Commodity risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	3	1
KB Securities Co., Ltd. | Commodity risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	210	56
KB Securities Co., Ltd. | Commodity risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	19	18
KB Insurance Co., Ltd. | Average
Value At Risk Line Items [Line Items]
Value at risk	40,005	32,211
KB Insurance Co., Ltd. | Minimum
Value At Risk Line Items [Line Items]
Value at risk	31,889	26,341
KB Insurance Co., Ltd. | Maximum
Value At Risk Line Items [Line Items]
Value at risk	47,406	36,991
KB Insurance Co., Ltd. | Ending
Value At Risk Line Items [Line Items]
Value at risk	46,759	35,946
KB Insurance Co., Ltd. | Interest rate risk | Average
Value At Risk Line Items [Line Items]
Value at risk	5,445	5,682
KB Insurance Co., Ltd. | Interest rate risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	3,854	2,850
KB Insurance Co., Ltd. | Interest rate risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	6,553	7,652
KB Insurance Co., Ltd. | Interest rate risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	5,906	7,055
KB Insurance Co., Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	34,560	26,529
KB Insurance Co., Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	28,035	23,491
KB Insurance Co., Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	40,853	29,339
KB Insurance Co., Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	40,853	28,891
KB Life Insurance Co., Ltd. | Average
Value At Risk Line Items [Line Items]
Value at risk	6,311
KB Life Insurance Co., Ltd. | Minimum
Value At Risk Line Items [Line Items]
Value at risk	2,797
KB Life Insurance Co., Ltd. | Maximum
Value At Risk Line Items [Line Items]
Value at risk	9,583
KB Life Insurance Co., Ltd. | Ending
Value At Risk Line Items [Line Items]
Value at risk	7,450
KB Life Insurance Co., Ltd. | Interest rate risk | Average
Value At Risk Line Items [Line Items]
Value at risk	2,095	3,054
KB Life Insurance Co., Ltd. | Interest rate risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	1,072	1,784
KB Life Insurance Co., Ltd. | Interest rate risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	2,932	4,389
KB Life Insurance Co., Ltd. | Interest rate risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	1,072	2,743
KB Life Insurance Co., Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	4,216
KB Life Insurance Co., Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	1,725
KB Life Insurance Co., Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	6,651
KB Life Insurance Co., Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	6,378
KB Investment Co., Ltd. | Average
Value At Risk Line Items [Line Items]
Value at risk	18,820	13,017
KB Investment Co., Ltd. | Minimum
Value At Risk Line Items [Line Items]
Value at risk	14,787	10,167
KB Investment Co., Ltd. | Maximum
Value At Risk Line Items [Line Items]
Value at risk	28,970	20,213
KB Investment Co., Ltd. | Ending
Value At Risk Line Items [Line Items]
Value at risk	28,819	17,908
KB Investment Co., Ltd. | Stock price risk | Average
Value At Risk Line Items [Line Items]
Value at risk	5,114	1,153
KB Investment Co., Ltd. | Stock price risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	3,518	0
KB Investment Co., Ltd. | Stock price risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	10,518	7,588
KB Investment Co., Ltd. | Stock price risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	10,518	6,253
KB Investment Co., Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	13,706	11,864
KB Investment Co., Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	11,269	10,167
KB Investment Co., Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	18,452	12,625
KB Investment Co., Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	18,301	11,655
KB Kookmin Card Co., Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	13,029	2,712
KB Kookmin Card Co., Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	7,744	169
KB Kookmin Card Co., Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	16,094	7,861
KB Kookmin Card Co., Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	15,637	7,546
Prudential Life Insurance Company of Korea Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	4,676	7,977
Prudential Life Insurance Company of Korea Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	1,337	7,977
Prudential Life Insurance Company of Korea Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	7,211	7,977
Prudential Life Insurance Company of Korea Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	6,963	7,977
KB Capital Co.,Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	1,121	810
KB Capital Co.,Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	867	297
KB Capital Co.,Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	1,280	1,315
KB Capital Co.,Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	1,280	896
KB Real Estate Trust Co., Ltd. | Stock price risk | Average
Value At Risk Line Items [Line Items]
Value at risk	0	399
KB Real Estate Trust Co., Ltd. | Stock price risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	0	0
KB Real Estate Trust Co., Ltd. | Stock price risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	0	435
KB Real Estate Trust Co., Ltd. | Stock price risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	0	0
KB Asset Management Co., Ltd. | Average
Value At Risk Line Items [Line Items]
Value at risk		5,492
KB Asset Management Co., Ltd. | Minimum
Value At Risk Line Items [Line Items]
Value at risk		1,208
KB Asset Management Co., Ltd. | Maximum
Value At Risk Line Items [Line Items]
Value at risk		13,596
KB Asset Management Co., Ltd. | Ending
Value At Risk Line Items [Line Items]
Value at risk		1,141
KB Asset Management Co., Ltd. | Interest rate risk | Average
Value At Risk Line Items [Line Items]
Value at risk		1,298
KB Asset Management Co., Ltd. | Interest rate risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk		0
KB Asset Management Co., Ltd. | Interest rate risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk		2,589
KB Asset Management Co., Ltd. | Interest rate risk | Ending
Value At Risk Line Items [Line Items]
Value at risk		0
KB Asset Management Co., Ltd. | Stock price risk | Average
Value At Risk Line Items [Line Items]
Value at risk		3,382
KB Asset Management Co., Ltd. | Stock price risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk		0
KB Asset Management Co., Ltd. | Stock price risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk		9,484
KB Asset Management Co., Ltd. | Stock price risk | Ending
Value At Risk Line Items [Line Items]
Value at risk		0
KB Asset Management Co., Ltd. | Currency risk | Average
Value At Risk Line Items [Line Items]
Value at risk	2,151	812
KB Asset Management Co., Ltd. | Currency risk | Minimum
Value At Risk Line Items [Line Items]
Value at risk	1,053	1,208
KB Asset Management Co., Ltd. | Currency risk | Maximum
Value At Risk Line Items [Line Items]
Value at risk	3,085	1,523
KB Asset Management Co., Ltd. | Currency risk | Ending
Value At Risk Line Items [Line Items]
Value at risk	₩ 2,405	₩ 1,141

Financial Risk Management - _17

Financial Risk Management - Summary of Required Equity Capital not Measured by Value at Risk (Details) - Kookmin Bank - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Required Equity Capital Not Measured By VaR Line Items [Line Items]
Required Equity Capital Not Measured By VaR	₩ 71,611	₩ 71,316
Interest rate risk
Required Equity Capital Not Measured By VaR Line Items [Line Items]
Required Equity Capital Not Measured By VaR	25,432	40,290
Stock price risk
Required Equity Capital Not Measured By VaR Line Items [Line Items]
Required Equity Capital Not Measured By VaR	6	7,088
Currency risk
Required Equity Capital Not Measured By VaR Line Items [Line Items]
Required Equity Capital Not Measured By VaR	₩ 46,173	₩ 23,938

Financial Risk Management - _18

Financial Risk Management - Summary of Changes in Equity and Earnings from Interest Rate Risk (Details) - Kookmin Bank - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Scenario 1 (Parallel Rise)
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	₩ 936,965	₩ 544,087
Changes in Net Interest Income	564,771	415,339
Scenario 2 (Parallel Decline)
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	0	0
Changes in Net Interest Income	0	0
Scenario 3 (Short-Term Decline, Long-Term Rise)
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	273,951	245,337
Scenario 4 (Short-Term Rise, Long-Term Decline)
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	311,497	423,673
Scenario 5 (Short-Term Rise)
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	568,246	466,220
Scenario 6 (Short-Term Decline)
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	345,987	480,246
Maximum of 6 scenarios
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	936,965	544,087
Changes in Net Interest Income	564,771	415,339
Basic Capital
Change In Equity And Earnings From Interest Rate Risk [Line Items]
Changes in Economic Value of Equity Capital	₩ 30,491,173	₩ 28,234,310

Financial Risk Management - _19

Financial Risk Management - Summary of Interest Rate Value at Risk (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
KB Securities Co., Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	₩ 173,199	₩ 134,136
Maximum net interest income from interest risk shock	272,676	469,043
KB Insurance Co., Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	939,720	730,313
Maximum net interest income from interest risk shock	37,119	38,697
KB Kookmin Card Co., Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	93,232	283,780
Maximum net interest income from interest risk shock	225,581	135,628
Prudential Life Insurance Company of Korea Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	611,930	497,798
Maximum net interest income from interest risk shock	24,135	14,434
KB Life Insurance Co., Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	143,393	48,879
Maximum net interest income from interest risk shock	33,942	35,071
KB Capital Co.,Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	105,728	108,306
Maximum net interest income from interest risk shock	41,112	26,166
KB Savings Bank Co., Ltd.
Interest Rate Value At Risk [Line Items]
Maximum the economic value of equity from interest risk shock	20,077	25,878
Maximum net interest income from interest risk shock	₩ 786	₩ 499

Financial Risk Management - _20

Financial Risk Management - Summary of Financial Instruments Foreign Currencies (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	₩ 69,523,176	₩ 54,922,901
Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	10,212,151	7,769,696
Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	8,032,103	6,226,201
Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	295,209	414,927
Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	108,632	112,431
Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	37,508,968	28,210,688
Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	7,679,145	6,054,893
Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	3,327,474	2,607,588
Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	2,359,494	3,526,477
Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	63,635,498	49,766,586
Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,496,712	1,267,690
Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	599,543	684,373
Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	42,470	153,578
Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	31,548,645	24,519,600
Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	19,112,108	13,187,235
Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	8,515,662	6,111,215
Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	2,320,358	3,842,895
Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	20,509,664	16,432,781
USD | Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	51,911,017	39,036,629
USD | Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	6,995,653	4,482,459
USD | Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	7,217,843	5,464,176
USD | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	222,759	339,190
USD | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	104,091	112,431
USD | Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	26,605,737	18,783,163
USD | Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	6,604,010	5,446,539
USD | Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	2,267,233	1,660,713
USD | Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	1,893,691	2,747,958
USD | Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	47,037,860	36,957,646
USD | Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,496,712	1,267,690
USD | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	376,230	497,975
USD | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	42,470	139,528
USD | Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	21,324,104	16,441,107
USD | Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	15,597,440	10,068,379
USD | Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	6,366,475	5,135,667
USD | Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,834,429	3,407,300
USD | Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	19,149,581	14,991,859
JPY | Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	1,072,833	1,263,185
JPY | Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	420,964	583,545
JPY | Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	12,047	39,817
JPY | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	221	18,061
JPY | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	0	0
JPY | Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	597,413	565,918
JPY | Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	5,152	5,271
JPY | Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	0	0
JPY | Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	37,036	50,573
JPY | Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,385,330	1,479,086
JPY | Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
JPY | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	6,099	21,221
JPY | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
JPY | Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	900,044	933,268
JPY | Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	456,029	485,618
JPY | Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
JPY | Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	23,158	38,979
JPY | Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	353	32,200
EUR | Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	3,341,012	3,063,531
EUR | Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	482,144	558,793
EUR | Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	514,047	508,587
EUR | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	44,384	41,834
EUR | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	0	0
EUR | Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	1,777,967	1,387,089
EUR | Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	121,573	35,478
EUR | Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	300,856	300,315
EUR | Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	100,041	231,435
EUR | Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	3,800,160	2,244,352
EUR | Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
EUR | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	61,941	84,712
EUR | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
EUR | Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,873,026	991,872
EUR | Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	386,023	402,802
EUR | Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,338,391	666,873
EUR | Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	140,779	98,093
EUR | Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	262,116	248,007
GBP | Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	356,475	425,339
GBP | Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	96,951	113,586
GBP | Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	11,024	30,030
GBP | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	534	1,774
GBP | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	0	0
GBP | Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	234,612	259,787
GBP | Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	6,272	0
GBP | Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	0	0
GBP | Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	7,082	20,162
GBP | Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	638,916	579,884
GBP | Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
GBP | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	19,833	1,817
GBP | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
GBP | Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	106,456	66,440
GBP | Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	496,084	501,716
GBP | Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
GBP | Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	16,543	9,911
GBP | Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	2,991	741
CNY | Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	3,020,926	3,080,943
CNY | Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	570,186	878,798
CNY | Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	16,113	6,046
CNY | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	5,549	4,344
CNY | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	0	0
CNY | Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	1,774,589	1,617,715
CNY | Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	536,747	342,804
CNY | Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	48,435	108,594
CNY | Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	69,307	122,642
CNY | Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	2,157,614	1,849,065
CNY | Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
CNY | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	18,223	42,023
CNY | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
CNY | Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	1,943,015	1,755,272
CNY | Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	439
CNY | Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	102,443	0
CNY | Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	93,933	51,331
CNY | Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	250,239	253,472
Others | Financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	9,820,913	8,053,274
Others | Cash and due from financial institutions
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	1,646,253	1,152,515
Others | Financial assets at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	261,029	177,545
Others | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	21,762	9,724
Others | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	4,541	0
Others | Loans measured at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	6,518,650	5,597,016
Others | Financial assets at fair value through other comprehensive income
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	405,391	224,801
Others | Financial assets at amortized cost
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	710,950	537,966
Others | Other financial assets
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Asset Reporting Currency Denominated Value	252,337	353,707
Others | Financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	8,615,618	6,656,553
Others | Financial liabilities at fair value through profit or loss
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	0
Others | Derivatives held for trading
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	117,217	36,625
Others | Derivatives held for hedging
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	0	14,050
Others | Deposits
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	5,402,000	4,331,641
Others | Borrowings Translated Into Korean Won
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	2,176,532	1,728,281
Others | Debentures
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	708,353	308,675
Others | Other financial liabilities
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Liability Reporting Currency Denominated Value	211,516	237,281
Others | Off-balance sheet items
Schedule Of Differences Between Reported Amount And Reporting Currency Denominated Amount [Line Items]
Off Balance Sheet Item In Foreign Currencies	₩ 844,384	₩ 906,502

Financial Risk Management - _21

Financial Risk Management - Summary of Objectives Policies and Processes for Managing Capital (Details) ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)
Disclosure of objectives, policies and processes for managing capital [abstract]
Minimum Common Equity Tier One Ratio	8.00%
Minimum Tier One Ratio	9.50%
Minimum Total Regulatory Capital Ratio	11.50%
Equity Capital:	₩ 45,882,765	₩ 40,080,136
Tier 1 Capital	42,305,442	36,895,778
Common Equity Tier 1 Capital	39,144,259	34,886,283
Additional Tier 1 Capital	3,161,183	2,009,495
Tier 2 Capital	3,577,323	3,184,358
Risk-Weighted Assets:	₩ 290,913,570	₩ 262,349,242
Equity Capital (%):	0.1577	0.1528
Tier 1 Capital (%)	0.1454	0.1406
Common Equity Tier 1 Capital (%)	0.1346	0.1330

Financial Risk Management -Disc

Financial Risk Management -Disclosure of Classification of time buckets of cash flows (Detail)	12 Months Ended
	Dec. 31, 2021
Not Later than One Day
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	1D (0.0028Y)
Greater Than 1 Day And Not Less Than One Month [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	1D< tcf ≤1M (0.0417Y)
Greater Than One month And Not Less Than Three Month [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	1M< tcf ≤3M (0.1667Y)
Greater Than Three month And Not Less Than Six Month [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	3M< tcf ≤6M (0.375Y)
Greater Than Six month And Not Less Than Nine Month [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	6M< tcf ≤9M (0.625Y)
Greater Than Nine months And Not Less Than One Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	9M< tcf ≤1Y (0.875Y)
Greater Than One Year And Not Less Than One point Five Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	1Y< tcf ≤1.5Y (1.25Y)
Greater ThanOne point Five Year And Not Less Than Two Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Short-term rates	1.5Y< tcf ≤2Y (1.75Y)
Greater Than Two Year And Not Less Than Three [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Medium-term rates	2Y< tcf ≤3Y (2.5Y)
Greater Than Three Year And Not Less Than Four Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Medium-term rates	3Y< tcf ≤4Y (3.5Y)
Greater Than Four Year And Not Less Than Five Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Medium-term rates	4Y< tcf ≤5Y (4.5Y)
Greater Than Five Year And Not Less Than six Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Medium-term rates	5Y< tcf ≤6Y (5.5Y)
Greater Than six Year And Not Less Than seven Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Medium-term rates	6Y< tcf ≤7Y (6.5Y)
Greater Than seven Year And Not Less Than Eight Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Long-term rates	7Y< tcf ≤8Y (7.5Y)
Greater Than Eight Year And Not Less Than Nine Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Long-term rates	8Y< tcf ≤9Y (8.5Y)
Greater Than Nine Year And Not Less Than Ten Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Long-term rates	9Y< tcf ≤10Y (9.5Y)
Greater Than Ten Year And Not Less Than Ffteen Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Long-term rates	10Y< tcf ≤15Y (12.5Y)
Greater Than Fiteen Year And Not Less Than Twenty Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Long-term rates	15Y< tcf ≤20Y (17.5Y)
GreaterThan Twenty Year [Member]
Disclosure of Classification of time buckets of cash flows [Line Items]
Long-term rates	tcf >20Y (25Y)

Financial Risk Management - Dis

Financial Risk Management - Disclosure of core deposit and average maturity by category for non-maturity deposits (Detail)	12 Months Ended
	Dec. 31, 2021
Retail transactional [Member]
Disclosure of core deposit and average maturity by category for non maturity deposits [Line Items]
Cap on average maturity of core deposits (years)	5 years
Cap on proportion of core deposits (%)	90.00%
Retail nontransactional [Member]
Disclosure of core deposit and average maturity by category for non maturity deposits [Line Items]
Cap on average maturity of core deposits (years)	4 years 6 months
Cap on proportion of core deposits (%)	70.00%
Wholesale [Member]
Disclosure of core deposit and average maturity by category for non maturity deposits [Line Items]
Cap on average maturity of core deposits (years)	4 years
Cap on proportion of core deposits (%)	50.00%

Segment Information - Summary o

Segment Information - Summary of Operating Segments (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)		Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)		Dec. 31, 2019KRW (₩)	Dec. 31, 2021USD ($)
Disclosure of operating segments [line items]
Net operating revenues from external customers		₩ 14,483,603			₩ 12,492,642		₩ 11,431,851
Intersegment net operating revenues (expenses)		0			0
Sub-total		14,483,603			12,492,642
Net interest income		11,229,572		$ 9,472,435	9,722,274		9,196,787
Interest income		15,210,878		12,830,770	14,485,747		14,639,187
Interest expense		(3,981,306)		(3,358,335)	(4,763,473)		(5,442,400)
Net fee and commission income (expense)		3,625,583		3,058,273	2,958,939		2,355,004
Fee and commission income		5,323,606		4,490,600	4,527,024		3,879,247
Fee and commission expense		(1,698,023)		(1,432,327)	(1,568,085)		(1,524,243)
Net insurance income (expenses)		556,711		469,600	299,993		299,512
Insurance income		16,107,858		13,587,396	14,386,640		12,317,182
Insurance expense		(15,551,147)		(13,117,796)	(14,086,647)		(12,017,670)
Net gains (losses) on financial instruments at fair value through profit or loss		995,304		839,565	1,011,366		643,872
Net other operating income (expenses)		(1,923,567)		(1,622,579)	(1,499,930)		(1,063,324)
General and administrative expenses		(7,200,853)		(6,074,106)	(6,814,812)		(6,271,805)
Operating income before provision for credit losses		7,282,750		6,143,188	5,677,830		5,160,046
Reversal (provision) of credit losses		(1,185,133)		(999,691)	(1,043,498)		(670,185)
Net operating income		6,097,617		5,143,497	4,634,332		4,489,861
Share of profit (loss) of associates and joint ventures		93,526		78,892	(43,750)		16,451
Net other non-operating income (expenses)		(109,537)			189,390
Segment profit before income tax expense		6,081,606		5,129,992	4,779,972		4,533,198
Income tax expense		(1,697,225)		(1,431,653)	(1,264,394)		(1,220,570)
Profit for the year		4,384,381		3,698,339	3,515,578		3,312,628
Profit attributable to shareholders of the Parent Company		4,409,543		3,719,564	3,468,448		3,311,257
Profit (loss), attributable to non-controlling interests		(25,162)		$ (21,225)	47,130		1,371
Total assets		663,895,834	[1]		610,719,944	[1]		$ 560,013,357
Total liabilities		615,601,914	[1]		567,317,587	[1]		$ 519,276,183
Banking business
Disclosure of operating segments [line items]
Net operating revenues from external customers		8,132,794			7,550,348		6,946,626
Intersegment net operating revenues (expenses)		306,658			286,317
Sub-total		8,439,452			7,836,665
Net interest income		7,728,476			6,754,766
Interest income		10,674,361			10,456,165
Interest expense		(2,945,885)			(3,701,399)
Net fee and commission income (expense)		1,187,881			1,067,922
Fee and commission income		1,586,944			1,449,687
Fee and commission expense		(399,063)			(381,765)
Net insurance income (expenses)		0			0
Insurance income		0			0
Insurance expense		0			0
Net gains (losses) on financial instruments at fair value through profit or loss		342,834			244,183
Net other operating income (expenses)		(819,739)			(230,206)
General and administrative expenses		(4,402,731)			(4,201,346)
Operating income before provision for credit losses		4,036,721			3,635,319
Reversal (provision) of credit losses		(522,728)			(484,182)
Net operating income		3,513,993			3,151,137
Share of profit (loss) of associates and joint ventures		57,156			(48,158)
Net other non-operating income (expenses)		(79,605)			28,844
Segment profit before income tax expense		3,491,544			3,131,823
Income tax expense		(953,515)			(812,304)
Profit for the year		2,538,029			2,319,519
Profit attributable to shareholders of the Parent Company		2,590,764			2,298,195
Profit (loss), attributable to non-controlling interests		(52,735)			21,324
Total assets	[1]	483,564,898			438,444,114
Total liabilities	[1]	450,675,985			408,036,040
Corporate Banking
Disclosure of operating segments [line items]
Net operating revenues from external customers		3,589,404			2,833,601
Intersegment net operating revenues (expenses)		34,771			178,199
Sub-total		3,624,175			3,011,800
Net interest income		3,802,477			3,238,002
Interest income		5,317,800			4,899,943
Interest expense		(1,515,323)			(1,661,941)
Net fee and commission income (expense)		390,619			363,459
Fee and commission income		534,749			480,190
Fee and commission expense		(144,130)			(116,731)
Net insurance income (expenses)		0			0
Insurance income		0			0
Insurance expense		0			0
Net gains (losses) on financial instruments at fair value through profit or loss		29,407			(52,493)
Net other operating income (expenses)		(598,328)			(537,168)
General and administrative expenses		(1,831,948)			(1,555,089)
Operating income before provision for credit losses		1,792,227			1,456,711
Reversal (provision) of credit losses		(392,956)			(204,302)
Net operating income		1,399,271			1,252,409
Share of profit (loss) of associates and joint ventures		0			0
Net other non-operating income (expenses)		(9,237)			5,490
Segment profit before income tax expense		1,390,034			1,257,899
Income tax expense		(368,577)			(339,728)
Profit for the year		1,021,457			918,171
Profit attributable to shareholders of the Parent Company		1,022,699			917,956
Profit (loss), attributable to non-controlling interests		(1,242)			215
Total assets	[1]	189,310,448			164,323,181
Total liabilities	[1]	197,834,530			167,236,387
Retail Banking
Disclosure of operating segments [line items]
Net operating revenues from external customers		2,958,198			2,918,826
Intersegment net operating revenues (expenses)		0			0
Sub-total		2,958,198			2,918,826
Net interest income		3,541,539			3,178,280
Interest income		4,437,930			4,519,579
Interest expense		(896,391)			(1,341,299)
Net fee and commission income (expense)		392,060			406,603
Fee and commission income		535,530			529,178
Fee and commission expense		(143,470)			(122,575)
Net insurance income (expenses)		0			0
Insurance income		0			0
Insurance expense		0			0
Net gains (losses) on financial instruments at fair value through profit or loss		0			0
Net other operating income (expenses)		(975,401)			(666,057)
General and administrative expenses		(2,036,855)			(2,072,515)
Operating income before provision for credit losses		921,343			846,311
Reversal (provision) of credit losses		(125,876)			(264,943)
Net operating income		795,467			581,368
Share of profit (loss) of associates and joint ventures		0			0
Net other non-operating income (expenses)		0			0
Segment profit before income tax expense		795,467			581,368
Income tax expense		(218,753)			(159,876)
Profit for the year		576,714			421,492
Profit attributable to shareholders of the Parent Company		576,714			421,492
Profit (loss), attributable to non-controlling interests		0			0
Total assets	[1]	169,513,344			161,330,053
Total liabilities	[1]	180,815,013			176,571,944
Other Banking Services
Disclosure of operating segments [line items]
Net operating revenues from external customers		1,585,192			1,797,921
Intersegment net operating revenues (expenses)		271,887			108,118
Sub-total		1,857,079			1,906,039
Net interest income		384,460			338,484
Interest income		918,631			1,036,643
Interest expense		(534,171)			(698,159)
Net fee and commission income (expense)		405,202			297,860
Fee and commission income		516,665			440,319
Fee and commission expense		(111,463)			(142,459)
Net insurance income (expenses)		0			0
Insurance income		0			0
Insurance expense		0			0
Net gains (losses) on financial instruments at fair value through profit or loss		313,427			296,676
Net other operating income (expenses)		753,990			973,019
General and administrative expenses		(533,928)			(573,742)
Operating income before provision for credit losses		1,323,151			1,332,297
Reversal (provision) of credit losses		(3,896)			(14,937)
Net operating income		1,319,255			1,317,360
Share of profit (loss) of associates and joint ventures		57,156			(48,158)
Net other non-operating income (expenses)		(70,368)			23,354
Segment profit before income tax expense		1,306,043			1,292,556
Income tax expense		(366,185)			(312,700)
Profit for the year		939,858			979,856
Profit attributable to shareholders of the Parent Company		991,351			958,747
Profit (loss), attributable to non-controlling interests		(51,493)			21,109
Total assets	[1]	124,741,106			112,790,880
Total liabilities	[1]	72,026,442			64,227,709
Securities
Disclosure of operating segments [line items]
Net operating revenues from external customers		1,675,977			1,448,409		1,113,200
Intersegment net operating revenues (expenses)		11,002			(6,366)
Sub-total		1,686,979			1,442,043
Net interest income		556,386			510,566
Interest income		824,775			820,100
Interest expense		(268,389)			(309,534)
Net fee and commission income (expense)		1,014,801			916,758
Fee and commission income		1,201,670			1,037,545
Fee and commission expense		(186,869)			(120,787)
Net insurance income (expenses)		0			0
Insurance income		0			0
Insurance expense		0			0
Net gains (losses) on financial instruments at fair value through profit or loss		123,183			117,792
Net other operating income (expenses)		(7,391)			(103,073)
General and administrative expenses		(855,142)			(844,503)
Operating income before provision for credit losses		831,837			597,540
Reversal (provision) of credit losses		(18,438)			(23,827)
Net operating income		813,399			573,713
Share of profit (loss) of associates and joint ventures		14,484			3,598
Net other non-operating income (expenses)		(18,307)			4,472
Segment profit before income tax expense		809,576			581,783
Income tax expense		(215,424)			(156,135)
Profit for the year		594,152			425,648
Profit attributable to shareholders of the Parent Company		594,301			425,622
Profit (loss), attributable to non-controlling interests		(149)			26
Total assets	[1]	55,493,984			57,570,654
Total liabilities	[1]	50,008,422			52,516,488
Non-life Insurance
Disclosure of operating segments [line items]
Net operating revenues from external customers		1,285,593			1,027,269		1,185,600
Intersegment net operating revenues (expenses)		(53,017)			5,976
Sub-total		1,232,576			1,033,245
Net interest income		625,228			615,951
Interest income		634,816			616,852
Interest expense		(9,588)			(901)
Net fee and commission income (expense)		(173,348)			(171,220)
Fee and commission income		10,418			8,571
Fee and commission expense		(183,766)			(179,791)
Net insurance income (expenses)		493,271			376,827
Insurance income		12,722,178			12,367,894
Insurance expense		(12,228,907)			(11,991,067)
Net gains (losses) on financial instruments at fair value through profit or loss		369,864			259,274
Net other operating income (expenses)		(82,439)			(47,587)
General and administrative expenses		(833,597)			(810,923)
Operating income before provision for credit losses		398,979			222,322
Reversal (provision) of credit losses		(5,476)			7,569
Net operating income		393,503			229,891
Share of profit (loss) of associates and joint ventures		(143)			(42)
Net other non-operating income (expenses)		17,446			16,142
Segment profit before income tax expense		410,806			245,991
Income tax expense		(108,715)			(68,821)
Profit for the year		302,091			177,170
Profit attributable to shareholders of the Parent Company		301,836			177,181
Profit (loss), attributable to non-controlling interests		255			(11)
Total assets	[1]	41,472,227			39,125,869
Total liabilities	[1]	37,328,955			35,093,312
Credit Card
Disclosure of operating segments [line items]
Net operating revenues from external customers		1,773,989			1,538,230		1,470,910
Intersegment net operating revenues (expenses)		(158,545)			(183,480)
Sub-total		1,615,444			1,354,750
Net interest income		1,390,753			1,265,703
Interest income		1,768,215			1,631,520
Interest expense		(377,462)			(365,817)
Net fee and commission income (expense)		546,022			400,485
Fee and commission income		1,644,806			1,485,718
Fee and commission expense		(1,098,784)			(1,085,233)
Net insurance income (expenses)		11,589			13,283
Insurance income		21,711			23,989
Insurance expense		(10,122)			(10,706)
Net gains (losses) on financial instruments at fair value through profit or loss		3,431			5,904
Net other operating income (expenses)		(336,351)			(330,625)
General and administrative expenses		(577,734)			(514,845)
Operating income before provision for credit losses		1,037,710			839,905
Reversal (provision) of credit losses		(465,342)			(396,376)
Net operating income		572,368			443,529
Share of profit (loss) of associates and joint ventures		785			1,127
Net other non-operating income (expenses)		(7,378)			(6,636)
Segment profit before income tax expense		565,775			438,020
Income tax expense		(144,611)			(114,027)
Profit for the year		421,164			323,993
Profit attributable to shareholders of the Parent Company		418,898			324,662
Profit (loss), attributable to non-controlling interests		2,266			(669)
Total assets	[1]	27,349,561			24,071,645
Total liabilities	[1]	22,793,919			19,789,959
Life Insurance
Disclosure of operating segments [line items]
Net operating revenues from external customers		631,065			237,416		107,404
Intersegment net operating revenues (expenses)		(7,273)			(9,655)
Sub-total		623,792			227,761
Net interest income		519,609			260,925
Interest income		523,882			261,056
Interest expense		(4,273)			(131)
Net fee and commission income (expense)		(26,895)			(18,059)
Fee and commission income		433			98
Fee and commission expense		(27,328)			(18,157)
Net insurance income (expenses)		56,871			(91,410)
Insurance income		3,406,145			2,026,052
Insurance expense		(3,349,274)			(2,117,462)
Net gains (losses) on financial instruments at fair value through profit or loss		137,343			71,350
Net other operating income (expenses)		(63,136)			4,955
General and administrative expenses		(203,198)			(152,271)
Operating income before provision for credit losses		420,594			75,490
Reversal (provision) of credit losses		1,677			472
Net operating income		422,271			75,962
Share of profit (loss) of associates and joint ventures		0			1
Net other non-operating income (expenses)		(158)			(16,270)
Segment profit before income tax expense		422,113			59,693
Income tax expense		(132,510)			(27,167)
Profit for the year		289,603			32,526
Profit attributable to shareholders of the Parent Company		289,603			32,526
Profit (loss), attributable to non-controlling interests		0			0
Total assets	[1]	36,921,678			35,546,572
Total liabilities	[1]	34,166,882			32,524,518
Others
Disclosure of operating segments [line items]
Net operating revenues from external customers		984,185			690,970		₩ 608,111
Intersegment net operating revenues (expenses)		98,215			324,910
Sub-total		1,082,400			1,015,880
Net interest income		411,874			314,832
Interest income		816,515			726,668
Interest expense		(404,641)			(411,836)
Net fee and commission income (expense)		1,068,648			776,282
Fee and commission income		1,187,661			871,499
Fee and commission expense		(119,013)			(95,217)
Net insurance income (expenses)		0			0
Insurance income		0			0
Insurance expense		0			0
Net gains (losses) on financial instruments at fair value through profit or loss		184,467			396,626
Net other operating income (expenses)		(582,589)			(471,860)
General and administrative expenses		(438,170)			(405,530)
Operating income before provision for credit losses		644,230			610,350
Reversal (provision) of credit losses		(175,568)			(148,127)
Net operating income		468,662			462,223
Share of profit (loss) of associates and joint ventures		9,411			553
Net other non-operating income (expenses)		2,408			40,927
Segment profit before income tax expense		480,481			503,703
Income tax expense		(148,044)			(97,268)
Profit for the year		332,437			406,435
Profit attributable to shareholders of the Parent Company		330,563			404,381
Profit (loss), attributable to non-controlling interests		1,874			2,054
Total assets	[1]	52,929,567			47,408,052
Total liabilities	[1]	23,191,051			21,598,232
Consolidation adjustments
Disclosure of operating segments [line items]
Net operating revenues from external customers		0			0
Intersegment net operating revenues (expenses)		(197,040)			(417,702)
Sub-total		(197,040)			(417,702)
Net interest income		(2,754)			(469)
Interest income		(31,686)			(26,614)
Interest expense		28,932			26,145
Net fee and commission income (expense)		8,474			(13,229)
Fee and commission income		(308,326)			(326,094)
Fee and commission expense		316,800			312,865
Net insurance income (expenses)		(5,020)			1,293
Insurance income		(42,176)			(31,295)
Insurance expense		37,156			32,588
Net gains (losses) on financial instruments at fair value through profit or loss		(165,818)			(83,763)
Net other operating income (expenses)		(31,922)			(321,534)
General and administrative expenses		109,719			114,606
Operating income before provision for credit losses		(87,321)			(303,096)
Reversal (provision) of credit losses		742			973
Net operating income		(86,579)			(302,123)
Share of profit (loss) of associates and joint ventures		11,833			(829)
Net other non-operating income (expenses)		(23,943)			121,911
Segment profit before income tax expense		(98,689)			(181,041)
Income tax expense		5,594			11,328
Profit for the year		(93,095)			(169,713)
Profit attributable to shareholders of the Parent Company		(116,422)			(194,119)
Profit (loss), attributable to non-controlling interests		23,327			24,406
Total assets	[1]	(33,836,081)			(31,446,962)
Total liabilities	[1]	₩ (2,563,300)			₩ (2,240,962)
[1]	Assets and liabilities of the reporting segments are amounts before intersegment transactions.

Segment Information - Summary_2

Segment Information - Summary of Products and Services (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	₩ 14,483,603	₩ 12,492,642	₩ 11,431,851
Banking service
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	8,132,794	7,550,348	6,946,626
Securities service
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	1,675,977	1,448,409	1,113,200
Non-life insurance service
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	1,285,593	1,027,269	1,185,600
Credit card service
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	1,773,989	1,538,230	1,470,910
Life insurance service
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	631,065	237,416	107,404
Others
Operating Revenes From External Customers For Each Service [line Items]
Operating Revenes From External Customers	₩ 984,185	₩ 690,970	₩ 608,111

Segment Information - Summary_3

Segment Information - Summary of Geographical Areas (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of geographical areas [line items]
Net operating revenues from external customers	₩ 14,483,603	₩ 12,492,642	₩ 11,431,851
Major non-current assets	11,021,199	11,318,226
Domestic
Disclosure of geographical areas [line items]
Net operating revenues from external customers	13,525,769	11,891,540	11,142,264
Major non-current assets	9,853,970	10,216,017
United States
Disclosure of geographical areas [line items]
Net operating revenues from external customers	112,388	114,044	72,945
Major non-current assets	45,530	45,353
New Zealand
Disclosure of geographical areas [line items]
Net operating revenues from external customers	12,857	3,554	6,946
Major non-current assets	1,932	2,385
China
Disclosure of geographical areas [line items]
Net operating revenues from external customers	127,939	84,821	109,574
Major non-current assets	21,416	13,971
Cambodia
Disclosure of geographical areas [line items]
Net operating revenues from external customers	410,482	250,426	19,534
Major non-current assets	35,668	32,354
United Kingdom
Disclosure of geographical areas [line items]
Net operating revenues from external customers	29,764	28,681	10,037
Major non-current assets	86,361	81,879
Others
Disclosure of geographical areas [line items]
Net operating revenues from external customers	97,721	75,184	70,551
Major non-current assets	20,446	51,288
Consolidation adjustments
Disclosure of geographical areas [line items]
Net operating revenues from external customers	0	0	0
Major non-current assets	518,788	487,742
Indonesia
Disclosure of geographical areas [line items]
Net operating revenues from external customers	166,683	44,392	₩ 0
Major non-current assets	₩ 437,088	₩ 387,237

Financial Assets and Financia_3

Financial Assets and Financial Liabilities - Summary of Fair Value Measurement (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020
Disclosure of fair value measurement of assets [abstract]
Carrying amount		₩ 634,240,053		₩ 582,219,781
Fair value		634,107,688		585,003,880
Financial Assets Measured At Fair Value		130,103,428		128,406,037
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		504,004,260		456,597,843
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		541,632,120		496,813,306
Fair value		541,296,618		497,750,059
Financial Liabilities Measured At Fair Value		15,771,238		17,032,955
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		525,525,380		480,717,104
Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		33,217,551		33,330,288
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		21,594,815		22,801,037
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		3,187,654		2,231,461
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		0		0
Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		82,536,288		80,957,228
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		52,177,048		38,428,580
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3		26,385,492		18,855,505
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		4,591,470		5,458,616
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		268,261,344		240,538,815
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		63,960,027		59,065,677
Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		14,349,589	[1]	14,118,521
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		430,232,397		395,368,226
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3		419,473,914		381,200,537
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		7,992,114	[1]	9,342,878
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		257,264,036		240,178,289
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		227,769,634		211,566,001
Financial liabilities at fair value through profit or loss
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		2,939,584		2,025,951
Fair value		2,939,584		2,025,951
Financial Liabilities Measured At Fair Value		2,939,584		2,025,951
Financial liabilities at fair value through profit or loss | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		2,939,584		2,025,951
Financial liabilities at fair value through profit or loss | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		0		0
Financial liabilities at fair value through profit or loss | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		0	[1]	0
Financial liabilities designated at fair value through profit or loss
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		9,149,396		9,784,107
Fair value		9,149,396		9,784,107
Financial Liabilities Measured At Fair Value		9,149,396		9,784,107
Financial liabilities designated at fair value through profit or loss | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		36,938		1,040
Financial liabilities designated at fair value through profit or loss | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 1,294,944		₩ 581,636
Valuation techniques		DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model		DCF Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others
Inputs		Price of underlying asset, Interest rate, Dividend yield, Volatility, Discount rate		Price of underlying asset, Interest rate, Dividend yield, Volatility, Discount rate, and others
Financial liabilities designated at fair value through profit or loss | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 7,817,514	[1]	₩ 9,201,431
Derivatives held for trading
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		3,509,789		5,014,072
Fair value		3,509,789		5,014,072
Financial Liabilities Measured At Fair Value		₩ 3,509,789		5,014,072
Description of valuation processes used in fair value measurement, liabilities		Fair value of exchange traded derivatives is determined using quoted price in an active market, and fair value of OTC derivatives is determined using valuation techniques. The Group uses internally developed valuation models that are widely used by market participants to determine fair value of plain vanilla OTC derivatives including options, interest rate swaps, and currency swaps, based on observable market parameters. However, some complex financial instruments are valued using appropriate models developed from generally accepted market valuation models including Finite Difference Method (“FDM”), MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Closed Form, and Tree Model or valuation results from independent external professional valuation institutions.
Derivatives held for trading | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 211,132		204,470
Derivatives held for trading | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 3,124,057		₩ 4,668,155
Valuation techniques		DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others		DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, and others
Inputs		Interest rate, Price of underlying asset, Foreign exchange rate, Credit spread, Discount rate, Volatility, and others		Discount rate, Underlying asset index, Volatility, Interest rate, Stock price, Foreign exchange rate, Dividend yield, and others
Derivatives held for trading | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 174,600	[1]	₩ 141,447
Derivatives held for hedging
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		172,469		208,825
Fair value		172,469		208,825
Financial Liabilities Measured At Fair Value		₩ 172,469		208,825
Description of valuation processes used in fair value measurement, liabilities		Fair value of exchange traded derivatives is determined using quoted price in an active market, and fair value of OTC derivatives is determined using valuation techniques. The Group uses internally developed valuation models that are widely used by market participants to determine fair value of plain vanilla OTC derivatives including options, interest rate swaps, and currency swaps, based on observable market parameters. However, some complex financial instruments are valued using appropriate models developed from generally accepted market valuation models including Finite Difference Method (“FDM”), MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Closed Form, and Tree Model or valuation results from independent external professional valuation institutions.
Derivatives held for hedging | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 0		0
Derivatives held for hedging | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 172,469		₩ 208,825
Valuation techniques		DCF Model, Closed Form, FDM		DCF Model, Closed Form, FDM, and others
Inputs		Projected cash flow, Discount rate, Forward foreign exchange rate, Volatility, Foreign exchange rate, and others		Discount rate, Foreign exchange rate, and others
Derivatives held for hedging | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Measured At Fair Value		₩ 0	[1]	₩ 0
Deposits
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		372,023,918		338,580,220
Fair value		371,936,631		338,833,784
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	₩ 371,936,631		338,833,784
Description of valuation processes used in fair value measurement, liabilities		Carrying amount of demand deposits is a reasonable approximation of fair value because they do not have a fixed maturity and are payable on demand. Fair value of time deposits is determined using DCF Model discounting the expected cash flows, which are contractual cash flows adjusted by the expected prepayment rate, at an appropriate discount rate.
Deposits | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	₩ 0		0
Deposits | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	204,299,174		181,472,846
Deposits | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	167,637,457		157,360,938
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 167,637,457		₩ 157,360,938
Valuation techniques		DCF Model		DCF Model
Inputs		Other spread, Prepayment rate, Interest rate		Other spread, Prepayment rate, Interest rate
Borrowings
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		₩ 56,912,374		₩ 49,827,156
Fair value		56,805,938		50,081,900
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[3]	₩ 56,805,938		50,081,900
Description of valuation processes used in fair value measurement, liabilities		Carrying amount of overdrafts in foreign currency is a reasonable approximation of fair value because they do not have a fixed maturity and are payable on demand. Fair value of other borrowings is determined using DCF Model.
Borrowings | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[3]	₩ 0		0
Borrowings | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[3]	3,137,427		1,149,734
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 3,135,284		₩ 1,149,442
Valuation techniques		DCF Model		DCF Model
Inputs		Discount rate		Discount rate
Borrowings | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[3]	₩ 53,668,511		₩ 48,932,166
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 53,668,511		₩ 48,932,166
Valuation techniques		DCF Model		DCF Model
Inputs		Other spread, Interest rate		Other spread, Interest rate
Debentures
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		₩ 67,430,188		₩ 62,760,687
Fair value		67,288,409		63,189,132
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 67,288,409		63,189,132
Description of valuation processes used in fair value measurement, liabilities		Fair value is determined using valuation results of external professional valuation institutions, which are calculated using market inputs.
Debentures | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 0		0
Debentures | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		60,824,743		57,916,235
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 60,824,743		₩ 57,916,235
Valuation techniques		DCF Model		DCF Model
Inputs		Discount rate		Discount rate
Debentures | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 6,463,666		₩ 5,272,897
Financial Liabilities Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 6,463,666		₩ 5,272,897
Valuation techniques		DCF Model		DCF Model
Inputs		Other spread, Interest rate		Other spread, Interest rate
Other financial liabilities
Disclosure of fair value measurement of liabilities [abstract]
Carrying amount		₩ 29,494,402		₩ 28,612,288
Fair value		29,494,402		28,612,288
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	₩ 29,494,402		28,612,288
Description of valuation processes used in fair value measurement, liabilities		Carrying amount is a reasonable approximation of fair value because other financial assets and other financial liabilities are temporary accounts used for other various transactions and their maturities are relatively short or not defined.
Other financial liabilities | Level 1
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	₩ 0		0
Other financial liabilities | Level 2
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	0		0
Other financial liabilities | Level 3
Disclosure of fair value measurement of liabilities [abstract]
Financial Liabilities Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	29,494,402		28,612,288
Cash and due from financial institutions
Disclosure of fair value measurement of assets [abstract]
Carrying amount		31,009,374		25,608,842
Fair value		31,081,231		25,612,273
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	₩ 31,081,231		25,612,273
Description of valuation processes used in fair value measurement, assets		Fair value of cash is same as carrying amount. Carrying amount of demand deposit and settlement deposit is a reasonable approximation of fair value because these financial instruments do not have a fixed maturity and are receivable on demand. Fair value of general deposit is measured using Discounted Cash Flow (“DCF”) Model.
Cash and due from financial institutions | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	₩ 3,330,920		3,362,096
Cash and due from financial institutions | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	25,791,556		19,573,075
Cash and due from financial institutions | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[2]	1,958,755		2,677,102
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 1,958,755		₩ 2,677,102
Valuation techniques		DCF Model		DCF Model
Inputs		Credit spread, Other spread, Interest rate
Due from financial institutions measured at fair value through profit or loss
Disclosure of fair value measurement of assets [abstract]
Carrying amount		₩ 200,742		₩ 100,094
Fair value		200,742		100,094
Financial Assets Measured At Fair Value		200,742		100,094
Due from financial institutions measured at fair value through profit or loss | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		0		0
Due from financial institutions measured at fair value through profit or loss | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 128,726		₩ 10,011
Valuation techniques		DCF Model, Hull and White Model		DCF Model
Inputs		Projected cash flow, Discount rate, Volatility, Correlation coefficient		Projected cash flow, Discount rate
Due from financial institutions measured at fair value through profit or loss | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 72,016	[1]	₩ 90,083
Derivatives held for trading
Disclosure of fair value measurement of assets [abstract]
Carrying amount		3,532,542		5,210,512
Fair value		3,532,542		5,210,512
Financial Assets Measured At Fair Value		₩ 3,532,542		5,210,512
Description of valuation processes used in fair value measurement, assets		Fair value of exchange traded derivatives is determined using quoted price in an active market, and fair value of OTC derivatives is determined using valuation techniques. The Group uses internally developed valuation models that are widely used by market participants to determine fair value of plain vanilla OTC derivatives including options, interest rate swaps, and currency swaps, based on observable market parameters. However, some complex financial instruments are valued using appropriate models developed from generally accepted market valuation models including Finite Difference Method (“FDM”), MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Closed Form, and Tree Model or valuation results from independent external professional valuation institutions.
Derivatives held for trading | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 81,408		90,459
Derivatives held for trading | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 3,241,129		₩ 4,678,185
Valuation techniques		DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Binomial Model, and others		DCF Model, Closed Form, FDM, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, and others
Inputs		Interest rate, Price of underlying asset, Foreign exchange rate, Credit spread, Discount rate, Volatility, and others		Discount rate, Underlying asset index, Volatility, Interest rate, Stock price, Foreign exchange rate, Dividend yield, and others
Derivatives held for trading | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 210,005	[1]	₩ 441,868
Debt securities
Disclosure of fair value measurement of assets [abstract]
Carrying amount		56,259,511		58,456,889
Fair value		56,259,511		58,456,889
Financial Assets Measured At Fair Value		56,259,511		58,456,889
Debt securities | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		17,706,456		18,147,167
Debt securities | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 38,553,055		₩ 40,309,722
Valuation techniques		DCF Model, Market Value Approach, Option Model		DCF Model, Market Value Approach
Inputs		Underlying asset index, Interest rate, Discount rate, and others		Discount rate, Volatility, and others
Debt securities | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 0	[1]	₩ 0
Equity securities
Disclosure of fair value measurement of assets [abstract]
Carrying amount		3,803,128		3,074,899
Fair value		3,803,128		3,074,899
Financial Assets Measured At Fair Value		3,803,128		3,074,899
Equity securities | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		2,320,702		584,634
Equity securities | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 47,859		₩ 70,357
Valuation techniques		DCF Model		DCF Model
Inputs		Discount rate		Interest rate, Discount rate, and others
Equity securities | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 1,434,567	[1]	₩ 2,419,908
Derivatives held for hedging
Disclosure of fair value measurement of assets [abstract]
Carrying amount		188,828		334,873
Fair value		188,828		334,873
Financial Assets Measured At Fair Value		₩ 188,828		334,873
Description of valuation processes used in fair value measurement, assets		Fair value of exchange traded derivatives is determined using quoted price in an active market, and fair value of OTC derivatives is determined using valuation techniques. The Group uses internally developed valuation models that are widely used by market participants to determine fair value of plain vanilla OTC derivatives including options, interest rate swaps, and currency swaps, based on observable market parameters. However, some complex financial instruments are valued using appropriate models developed from generally accepted market valuation models including Finite Difference Method (“FDM”), MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Closed Form, and Tree Model or valuation results from independent external professional valuation institutions.
Derivatives held for hedging | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 0		0
Derivatives held for hedging | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 188,828		₩ 334,873
Valuation techniques		DCF Model, Closed Form, FDM		DCF Model, Closed Form, FDM, and others
Inputs		Projected cash flow, Discount rate, Forward foreign exchange rate, Volatility, Foreign exchange rate, and others		Discount rate, Volatility, Foreign exchange rate, and others
Derivatives held for hedging | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 0	[1]	₩ 0
Debt securities
Disclosure of fair value measurement of assets [abstract]
Carrying amount		63,002,692		58,415,100
Fair value		63,002,692		58,415,100
Financial Assets Measured At Fair Value		63,002,692		58,415,100
Debt securities | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		12,146,181		13,316,819
Debt securities | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 39,300,923		₩ 34,580,168
Valuation techniques		DCF Model, Hull and White Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Net Asset Value Method, Binomial Model, and others		DCF Model, Closed Form, MonteCarlo Simulation, Black-Scholes Model, Hull and White Model, Net Asset Value Method, and others
Inputs		Projected cash flow, Fair value of underlying asset, Dividend yield, Price of underlying asset, Interest rate, Discount rate, Volatility, Correlation coefficient, and others		Projected cash flow, Fair value of underlying asset, Dividend yield, Price of underlying asset, Interest rate, Discount rate, Volatility, Correlation coefficient, and others
Debt securities | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 11,555,588	[1]	₩ 10,518,113
Financial assets at fair value through profit or loss
Disclosure of fair value measurement of assets [abstract]
Carrying amount		66,005,815		61,035,455
Fair value		66,005,815		61,035,455
Financial Assets Measured At Fair Value		66,005,815		61,035,455
Financial assets at fair value through profit or loss | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		13,108,985		14,508,028
Financial assets at fair value through profit or loss | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		40,205,783		35,298,665
Financial assets at fair value through profit or loss | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		12,691,047	[1]	11,228,762
Loans
Disclosure of fair value measurement of assets [abstract]
Carrying amount		313,604		293,409
Fair value		313,604		293,409
Financial Assets Measured At Fair Value		313,604		293,409
Loans | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		0		0
Loans | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 299,634		₩ 265,426
Valuation techniques		DCF Model		DCF Model
Inputs		Discount rate		Discount rate, Volatility, and others
Loans | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 13,970	[1]	₩ 27,983
Equity securities
Disclosure of fair value measurement of assets [abstract]
Carrying amount		2,419,463		2,092,313
Fair value		2,419,463		2,092,313
Financial Assets Measured At Fair Value		2,419,463		2,092,313
Equity securities | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		849,182		1,101,244
Equity securities | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 600,768		₩ 409,259
Valuation techniques		DCF Model		DCF Model
Inputs		Interest rate, Discount rate, and others		Interest rate, Discount rate, and others
Equity securities | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 969,513	[1]	₩ 581,810
Loans measured at fair value through profit or loss
Disclosure of fair value measurement of assets [abstract]
Carrying amount		269,296		337,983
Fair value		269,296		337,983
Financial Assets Measured At Fair Value		269,296		337,983
Loans measured at fair value through profit or loss | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		0		0
Loans measured at fair value through profit or loss | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 175,366		₩ 299,227
Valuation techniques		DCF Model		DCF Model
Inputs		Interest rate, Discount rate, and others		Interest rate, Discount rate, and others
Loans measured at fair value through profit or loss | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		₩ 93,930	[1]	₩ 38,756
Loans measured at amortized cost
Disclosure of fair value measurement of assets [abstract]
Carrying amount		417,900,273		377,166,984
Fair value		417,775,260		378,791,808
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 417,775,260		378,791,808
Description of valuation processes used in fair value measurement, assets		Fair value of loans is determined using DCF Model discounting the expected cash flows, which are contractual cash flows adjusted by the expected prepayment rate, at an appropriate discount rate.
Loans measured at amortized cost | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 0		0
Loans measured at amortized cost | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		260,101		271,241
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 260,101		₩ 271,241
Valuation techniques		DCF Model		DCF Model
Inputs		Discount rate		Discount rate
Loans measured at amortized cost | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 417,515,159		₩ 378,520,567
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 417,515,159		₩ 378,520,567
Valuation techniques		DCF Model		DCF Model
Inputs		Credit spread, Other spread, Prepayment rate, Interest rate
Others
Disclosure of fair value measurement of assets [abstract]
Carrying amount		₩ 113,622		₩ 89,965
Fair value		113,622		89,965
Financial Assets Measured At Fair Value		113,622		89,965
Others | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		113,622		89,965
Others | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		0		0
Others | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		0	[1]	0
Securities measured at amortized cost
Disclosure of fair value measurement of assets [abstract]
Carrying amount		44,471,628		36,870,229
Fair value		44,392,419		38,026,073
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 44,392,419	[4]	38,026,073
Description of valuation processes used in fair value measurement, assets		Fair value of securities and others that are traded in an active market is determined using the quoted prices. If there is no quoted price, fair value is determined using external professional valuation institutions. The institutions use one or more valuation techniques that are deemed appropriate considering the characteristics of the financial instruments among DCF Model, Free Cash Flow to Equity Model, Comparable Company Analysis, Dividend Discount Model, Risk Adjusted Discount Rate Method, and Net Asset Value Method.
Securities measured at amortized cost | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 18,263,895	[4]	19,438,941
Securities measured at amortized cost | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		26,125,391	[4]	18,584,264
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3		₩ 26,125,391		₩ 18,584,264
Valuation techniques		DCF Model, MonteCarlo Simulation		DCF Model, MonteCarlo Simulation
Inputs		Discount rate, Interest rate		Discount rate, Interest rate
Securities measured at amortized cost | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed		₩ 3,133	[4]	₩ 2,868
Financial Assets Whose Fair Values Are Disclosed And Classified As Level2 And Level3				₩ 2,868
Valuation techniques				DCF Model
Inputs				Interest rate
Financial assets at fair value through other comprehensive income
Disclosure of fair value measurement of assets [abstract]
Carrying amount		60,376,243		₩ 61,825,197
Fair value		60,376,243		61,825,197
Financial Assets Measured At Fair Value		60,376,243		61,825,197
Financial assets at fair value through other comprehensive income | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		20,027,158		18,731,801
Financial assets at fair value through other comprehensive income | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		38,900,548		40,645,505
Financial assets at fair value through other comprehensive income | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Measured At Fair Value		1,448,537	[1]	2,447,891
Others
Disclosure of fair value measurement of assets [abstract]
Carrying amount		10,755,350		14,167,689
Fair value		10,755,350		14,167,689
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	₩ 10,755,350		14,167,689
Description of valuation processes used in fair value measurement, assets		Carrying amount is a reasonable approximation of fair value because other financial assets and other financial liabilities are temporary accounts used for other various transactions and their maturities are relatively short or not defined.
Others | Level 1
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	₩ 0		0
Others | Level 2
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	0		0
Others | Level 3
Disclosure of fair value measurement of assets [abstract]
Financial Assets Not Measured At Fair Value But For Which Fair Value Is Disclosed	[4]	₩ 10,755,350		₩ 14,167,689
[1]	Includes KB Securities Co., Ltd.’s OTC derivatives consisting of ￦ 128,083 million of financial assets at fair value through profit or loss (debt instruments), ￦ 7,817,514 million of financial liabilities designated at fair value through profit or loss, ￦ 209,809 million of derivative financial assets, and ￦ 168,464 million of derivative financial liabilities.
[2]	The amounts included in Level 2 are the carrying amounts which are reasonable approximations of fair value.
[3]	Borrowings of ￦ 292 million and ￦ 2,143 million included in Level 2 are the carrying amounts which are reasonable approximations of fair value as of December 31, 2020 and 2021, respectively.
[4]	The amounts included in Level 3 are the carrying amounts which are reasonable approximations of fair value.

Financial Assets and Financia_4

Financial Assets and Financial Liabilities - Summary of Fair Value Measurement (Parenthetical) (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure of fair value measurement assets and liabilities [Line Items]
Derivative financial assets	₩ 3,721,370	$ 3,139,072	₩ 5,545,385
Derivative financial liabilities	3,682,258	$ 3,106,080	5,222,897
Level 2
Disclosure of fair value measurement assets and liabilities [Line Items]
Reasonable Approximation Of Fair Value Borrowings	2,143		₩ 292
Level 3 | KB Securities Co., Ltd.
Disclosure of fair value measurement assets and liabilities [Line Items]
Financial assets at fair value through profit or loss (debt instruments)	128,083
Financial liabilities designated at fair value through profit or loss	7,817,514
Derivative financial assets	209,809
Derivative financial liabilities	₩ 168,464

Financial Assets and Financia_5

Financial Assets and Financial Liabilities - Summary of Changes in Level 3 of the Fair Value Hierarchy (Details) - Level3 Of Fair Value Hierarchy [Member] - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Due from financial institutions measured at fair value through profit or loss
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		₩ 90,083	₩ 51,125
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		212	(2,021)
Other comprehensive income (loss)		1,720	(7,693)
Purchases		0	135,227
Sales		(19,999)	(86,555)
Issues		0	0
Settlements		0	0
Transfers into Level 3	[1]	0	0
Transfers out of Level 3	[1]	0	0
Ending balance		72,016	90,083
Equity securities measured at fair value through other comprehensive income
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		2,419,908	1,482,398
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		0	(206)
Other comprehensive income (loss)		(101,876)	815,244
Purchases		74,602	122,827
Sales		(5,618)	(355)
Issues		0	0
Settlements		0	0
Transfers into Level 3	[1]	0	0
Transfers out of Level 3	[1]	(952,449)	0
Ending balance		₩ 1,434,567	2,419,908
Description of reasons for transfers out of Level 3 of fair value hierarchy, assets		Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.
Loans measured at fair value through other comprehensive income
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		₩ 27,983	0
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		0	0
Other comprehensive income (loss)		87	(217)
Purchases		0	40,000
Sales		(14,100)	(11,800)
Issues		0	0
Settlements		0	0
Transfers into Level 3	[1]	0	0
Transfers out of Level 3	[1]	0	0
Ending balance		13,970	27,983
Securities measured at fair value through profit or loss
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		11,099,923	10,656,042
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		346,982	22,069
Other comprehensive income (loss)		223,545	144,963
Purchases		3,567,937	3,519,573
Sales		(2,360,801)	(3,263,111)
Issues		0	0
Settlements		0	0
Transfers into Level 3	[1]	4,307	129,580
Transfers out of Level 3	[1]	(356,792)	(109,193)
Ending balance		₩ 12,525,101	₩ 11,099,923
Description of reasons for transfers into Level 3 of fair value hierarchy, assets		Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.	Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.
Description of reasons for transfers out of Level 3 of fair value hierarchy, assets		Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.	Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.
Financial liabilities designated at fair value through profit or loss
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		₩ (9,201,431)	₩ (11,222,032)
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		61,756	(406,788)
Other comprehensive income (loss)		(5,446)	(27,876)
Purchases		0	0
Sales		0	0
Issues		(8,233,128)	(9,333,419)
Settlements		9,560,735	11,788,684
Transfers into Level 3	[1]	0	0
Transfers out of Level 3	[1]	0	0
Ending balance		(7,817,514)	(9,201,431)
Loans measured at fair value through profit or loss
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		38,756	188,133
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		(431)	627
Other comprehensive income (loss)		0	0
Purchases		55,605	0
Sales		0	(150,004)
Issues		0	0
Settlements		0	0
Transfers into Level 3	[1]	0	0
Transfers out of Level 3	[1]	0	0
Ending balance		93,930	38,756
Derivatives held for trading
Reconciliation Of Changes In Level3 Of The Fair Value Hierarchy [Abstract]
Beginning balance		300,421	309,966
Total Gains Losses From Financial Assets Liabilities Measured At Fair Value Level3 Of The Fair Value Hierarchy [Abstract]
Profit or loss		(66,116)	400,241
Other comprehensive income (loss)		0	0
Purchases		3,953	(24,165)
Sales		(170,055)	(328,348)
Issues		(32,516)	(42,732)
Settlements		0	90
Transfers into Level 3	[1]	(282)	(1,044)
Transfers out of Level 3	[1]	0	(13,587)
Ending balance		₩ 35,405	₩ 300,421
Description of reasons for transfers into Level 3 of fair value hierarchy, assets		Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.	Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.
Description of reasons for transfers out of Level 3 of fair value hierarchy, assets			Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.
[1]	Transfers into or out of Level 3 of the fair value hierarchy occurred due to the change in the availability of observable market data.

Financial Assets and Financia_6

Financial Assets and Financial Liabilities - Summary of Total Gains or Losses Recognized in Profit or Loss for The Period (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net gains(losses) on financial instruments at fair value through profit or loss
Total Gain Or Losses From Changes In Level3 Fair Value Hierarchy Line Items [Line Items]
Total gains (losses) recognized in profit or loss for the period	₩ 256,167	₩ 70,251	₩ (489,703)
Total gains (losses) recognized in profit or loss from financial instruments held at the end of the reporting period	126,516	129,824	(37,668)
Other operating income(expenses)
Total Gain Or Losses From Changes In Level3 Fair Value Hierarchy Line Items [Line Items]
Total gains (losses) recognized in profit or loss for the period	86,236	(56,329)	1,388
Total gains (losses) recognized in profit or loss from financial instruments held at the end of the reporting period	85,256	(60,884)	1,331
Net interest income
Total Gain Or Losses From Changes In Level3 Fair Value Hierarchy Line Items [Line Items]
Total gains (losses) recognized in profit or loss for the period	0	0	22
Total gains (losses) recognized in profit or loss from financial instruments held at the end of the reporting period	₩ 0	₩ 0	₩ 0

Financial Assets and Financia_7

Financial Assets and Financial Liabilities - Summary of Information About Fair Value Measurements Using Unobservable Assets (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 14,349,589	₩ 14,118,521
Due from financial institutions
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 72,016	₩ 90,083
Valuation techniques	MonteCarlo Simulation, Hull and White Model	MonteCarlo Simulation
Relationship Of Volatility Of The Underlying Asset	The higher the volatility of underlying asset, the higher the fair value fluctuation	The higher the volatility of underlying asset, the higher the fair value fluctuation
Relationship Of Correlation	The higher the correlation coefficient, the higher the fair value fluctuation	The higher the correlation coefficient, the higher the fair value fluctuation
Due from financial institutions | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Volatility Of The Underlying Asset Unobservable Inputs Assets	14.30%	19.40%
Due from financial institutions | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Volatility Of The Underlying Asset Unobservable Inputs Assets	39.66%	36.76%
Correlation Coefficient Unobservable Inputs Assets	3.36%	12.27%
Debt securities
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 11,555,588	₩ 10,518,113
Valuation techniques	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Option Model, Binomial Model, Net Asset Value Method, Milestone Method, Income Approach, Market Value Approach, and others	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Option Model, Binomial Model, Net Asset Value Method, Income Approach, Market Value Approach, and others
Relationship Of Growth Rate	The higher the growth rate, the higher the fair value	The higher the growth rate, the higher the fair value
Relationship Of Volatility	The higher the volatility, the higher the fair value fluctuation	The higher the volatility, the higher the fair value fluctuation
Relationship Of Discount Rate	The lower the discount rate, the higher the fair value	The lower the discount rate, the higher the fair value
Relationship Of Recovery Rate	The higher the recovery rate, the higher the fair value	The higher the recovery rate, the higher the fair value
Relationship Of Correlation Coefficient Between Underlying Asset	The higher the correlation coefficient, the higher the fair value fluctuation	The higher the correlation coefficient, the higher the fair value fluctuation
Relationship Of Liquidation Value	The higher the liquidation value, the higher the fair value	The higher the liquidation value, the higher the fair value
Relationship Of Volatility of real estate price	The higher the sale price of real estate, the higher the fair value	The higher the sale price of real estate, the higher the fair value
Relationship Of Volatility Of the Stock Price	The higher the stock price, the higher the fair value
Debt securities | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth Rate Unobservable Inputs Assets	0.00%	0.00%
Volatility Unobservable Inputs Assets	13.87%	8.00%
Discount Rate Unobservable Inputs Assets	0.60%	0.00%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Assets	60.35%	61.12%
Volatility Of The Stock Price Unobservable Inputs Assets	18.87%
Volatility of real estate price Unobservable Inputs Assets	1.00%
Debt securities | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth Rate Unobservable Inputs Assets	2.00%	2.00%
Volatility Unobservable Inputs Assets	58.39%	179.75%
Discount Rate Unobservable Inputs Assets	21.37%	21.37%
Recovery Rate Unobservable Inputs Assets	40.00%	40.00%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Assets	100.00%	100.00%
Liquidation Value Unobservable Inputs Assets		0.00%
Volatility Of The Stock Price Unobservable Inputs Assets	19.48%
Volatility of real estate price Unobservable Inputs Assets	1.00%	0.00%
Equity securities
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 969,513	₩ 581,810
Valuation techniques	Income Approach, Market Value Approach, Asset Value Approach, DCF Model, Comparable Company Analysis, Risk Adjusted Discount Rate Method, Dividend Discount Model, Usage of Past Transactions, Binomial Model, and others	Income Approach, Market Value Approach, Asset Value Approach, DCF Model, Comparable Company Analysis, Risk Adjusted Discount Rate Method, Dividend Discount Model, Usage of Past Transactions, Binomial Model, and others
Relationship Of Growth Rate	The higher the growth rate, the higher the fair value	The higher the growth rate, the higher the fair value
Relationship Of Discount Rate	The lower the discount rate, the higher the fair value	The lower the discount rate, the higher the fair value
Relationship Of Liquidation Value		The higher the liquidation value, the higher the fair value
Relationship Of Volatility Of the Stock Price	The higher the stock price, the higher the fair value
Equity securities | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth Rate Unobservable Inputs Assets	0.50%	0.00%
Discount Rate Unobservable Inputs Assets	8.80%	0.60%
Liquidation Value Unobservable Inputs Assets	1.00%
Volatility Of The Stock Price Unobservable Inputs Assets	23.36%
Equity securities | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth Rate Unobservable Inputs Assets	2.00%	1.10%
Discount Rate Unobservable Inputs Assets	24.60%	18.67%
Liquidation Value Unobservable Inputs Assets	1.00%	0.00%
Volatility Of The Stock Price Unobservable Inputs Assets	25.49%
Loans measured at fair value through profit or loss
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 93,930	₩ 38,756
Valuation techniques	DCF Model	Binomial Model, DCF Model
Relationship Of Discount Rate	The lower the discount rate, the higher the fair value	The lower the discount rate, the higher the fair value
Relationship Of Volatility Of the Stock Price		The higher the volatility, the higher the fair value fluctuation
Loans measured at fair value through profit or loss | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Discount Rate Unobservable Inputs Assets	8.21%	7.86%
Volatility Of The Stock Price Unobservable Inputs Assets		0.00%
Stock and index
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 184,165	₩ 382,337
Valuation techniques	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model
Relationship Of Volatility Of The Underlying Asset	The higher the volatility, the higher the fair value fluctuation	The higher the volatility, the higher the fair value fluctuation
Relationship Of Correlation Coefficient Between Underlying Asset	The higher the correlation coefficient, the higher the fair value fluctuation	The higher the correlation coefficient, the higher the fair value fluctuation
Relationship Of Volatility Of the Stock Price	The higher the stock price, the higher the fair value
Stock and index | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Volatility Of The Underlying Asset Unobservable Inputs Assets	15.07%	20.00%
Correlation Coefficient Unobservable Inputs Assets	60.35%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Assets		61.12%
Volatility Of The Stock Price Unobservable Inputs Assets	10.00%
Stock and index | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Volatility Of The Underlying Asset Unobservable Inputs Assets	80.58%	72.00%
Correlation Coefficient Unobservable Inputs Assets	88.17%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Assets		89.01%
Volatility Of The Stock Price Unobservable Inputs Assets	10.00%
Currency and interest rate
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 25,840	₩ 59,531
Valuation techniques	DCF Model, Hull and White Model, MonteCarlo Simulation, Closed Form	DCF Model, Hull and White Model
Relationship Of Correlation	The higher the correlation coefficient, the higher the fair value fluctuation
Relationship Of Volatility	The higher the volatility, the higher the fair value fluctuation	The higher the volatility, the higher the fair value fluctuation
Relationship Of Correlation Coefficient Between Underlying Asset		The higher the correlation coefficient, the higher the fair value fluctuation
Currency and interest rate | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Volatility Of The Underlying Asset Unobservable Inputs Assets		0.00%
Correlation Coefficient Unobservable Inputs Assets	48.31%
Volatility Unobservable Inputs Assets	2.67%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Assets		50.48%
Currency and interest rate | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Volatility Of The Underlying Asset Unobservable Inputs Assets		68.00%
Correlation Coefficient Unobservable Inputs Assets	90.16%
Volatility Unobservable Inputs Assets	81.32%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Assets		90.95%
Equity securities
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 1,434,567	₩ 2,419,908
Valuation techniques	Risk Adjusted Discount Rate Method, IMV Model, DCF Model, Comparable Company Analysis, Dividend Discount Model, Net Asset Value Method, Market Value Approach, Hull and White Model, and others	Risk Adjusted Discount Rate Method, IMV Model, DCF Model, Comparable Company Analysis, Dividend Discount Model, Option Model, Net Asset Value Method, Market Value Approach, One Factor Hull and White Model, and others
Relationship Of Growth Rate	The higher the growth rate, the higher the fair value	The higher the growth rate, the higher the fair value
Relationship Of Volatility	The higher the volatility, the higher the fair value fluctuation	The higher the volatility, the higher the fair value fluctuation
Relationship Of Discount Rate	The lower the discount rate, the higher the fair value	The lower the discount rate, the higher the fair value
Equity securities | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth Rate Unobservable Inputs Assets	0.00%	0.00%
Volatility Unobservable Inputs Assets	23.36%	22.11%
Discount Rate Unobservable Inputs Assets	8.80%	7.60%
Equity securities | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth Rate Unobservable Inputs Assets	2.00%	2.00%
Volatility Unobservable Inputs Assets	31.65%	24.16%
Discount Rate Unobservable Inputs Assets	18.02%	19.67%
Loans
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 13,970	₩ 27,983
Valuation techniques	DCF Model	DCF Model
Relationship Of Discount Rate	The lower the discount rate, the higher the fair value	The lower the discount rate, the higher the fair value
Loans | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Discount Rate Unobservable Inputs Assets	2.87%	2.21%
Loans | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Discount Rate Unobservable Inputs Assets	4.87%	4.21%

Financial Assets and Financia_8

Financial Assets and Financial Liabilities - Summary of Information About Fair Value Measurements Using Unobservable Inputs Liablities (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Fair value	₩ 7,992,114	₩ 9,342,878
Derivative linked securities
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Fair value	₩ 7,817,514	₩ 9,201,431
Valuation techniques	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model
Relationship Of Volatility Of The Underlying Asset	The higher the volatility, the higher the fair value fluctuation	The higher the volatility, the higher the fair value fluctuation
Relationship Of Correlation Between Underlying Asset	The higher the correlation coefficient, the higher the fair value fluctuation	The higher the absolute value of correlation coefficient, the higher the fair value fluctuation
Derivative linked securities | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Volatility Of The Underlying Asset Unobservable Inputs Liabilities	1.00%	1.00%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Liabilities	60.35%	61.12%
Derivative linked securities | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Volatility Of The Underlying Asset Unobservable Inputs Liabilities	81.32%	72.00%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Liabilities	90.16%	90.95%
Stock and index
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Fair value	₩ 92,757	₩ 60,291
Valuation techniques	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model	DCF Model, Closed Form, FDM, MonteCarlo Simulation, Hull and White Model, Black-Scholes Model, Binomial Model
Relationship Of Correlation Between Underlying Asset	The higher the correlation coefficient, the higher the fair value fluctuation	The higher the correlation coefficient, the higher the fair value fluctuation
Relationship Of Volatility	The higher the volatility, the higher the fair value fluctuation	The higher the volatility, the higher the fair value fluctuation
Stock and index | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Volatility Of The Underlying Asset Unobservable Inputs Liabilities	15.07%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Liabilities	60.35%	61.12%
Volatility Unobservable Inputs Liabilities		20.00%
Stock and index | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Volatility Of The Underlying Asset Unobservable Inputs Liabilities	80.58%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Liabilities	88.17%	90.95%
Volatility Unobservable Inputs Liabilities		68.00%
Others
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Fair value	₩ 81,843	₩ 81,156
Valuation techniques	DCF Model, Hull and White Model, MonteCarlo Simulation, Closed Form	MonteCarlo Simulation, Hull and White Model, DCF Model, Closed Form
Relationship Of Volatility Of The Underlying Asset	The higher the volatility, the higher the fair value fluctuation
Relationship Of Correlation Between Underlying Asset	The higher the correlation coefficient, the higher the fair value fluctuation	The higher the absolute value of correlation coefficient, the higher the fair value fluctuation
Relationship Of Volatility		The higher the volatility, the higher the fair value fluctuation
Relationship Of Discount Rate	The lower the discount rate, the higher the fair value	The higher the discount rate, the lower the fair value
Others | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Volatility Of The Underlying Asset Unobservable Inputs Liabilities	5.29%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Liabilities	48.31%	50.48%
Volatility Unobservable Inputs Liabilities		21.00%
Discount Rate Unobservable Inputs Liabilities	1.46%	1.15%
Others | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Volatility Of The Underlying Asset Unobservable Inputs Liabilities	53.57%
Correlation Coefficient Between Underlying Asset Unobservable Inputs Liabilities	90.16%	90.95%
Volatility Unobservable Inputs Liabilities		68.00%
Discount Rate Unobservable Inputs Liabilities	2.83%	1.29%

Financial Assets and Financia_9

Financial Assets and Financial Liabilities - Summary of Sensitivity Analysis of Changes Unobservable Inputs Assets (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Recognition in profit or loss
Favorable changes		₩ 53,293	₩ 78,016
Unfavorable changes		(48,646)	(49,068)
Other comprehensive income
Favorable changes		98,258	124,481
Unfavorable changes		(73,535)	(77,040)
Derivatives held for trading
Recognition in profit or loss
Favorable changes	[1]	19,328	22,783	[2]
Unfavorable changes	[1]	(20,005)	(25,013)	[2]
Other comprehensive income
Favorable changes	[1]	0	0	[2]
Unfavorable changes	[1]	0	0	[2]
Equity securities
Recognition in profit or loss
Favorable changes	[3]	6,495	0
Unfavorable changes	[3]	(5,145)	0
Other comprehensive income
Favorable changes	[3]	95,599	120,652
Unfavorable changes	[3]	(71,171)	(73,434)
Due from financial institutions measured at fair value through profit or loss
Recognition in profit or loss
Favorable changes	[2]	0	2
Unfavorable changes	[2]	0	(2)
Other comprehensive income
Favorable changes	[2]	19	199
Unfavorable changes	[2]	(18)	(222)
Debt securities
Recognition in profit or loss
Favorable changes	[2],[4]	13,149	35,790
Unfavorable changes	[2],[4]	(12,562)	(12,826)
Other comprehensive income
Favorable changes	[2],[4]	1,458	2,123
Unfavorable changes	[2],[4]	(1,402)	(2,122)
Loans
Recognition in profit or loss
Favorable changes	[5]	0	0
Unfavorable changes	[5]	0	0
Other comprehensive income
Favorable changes	[5]	133	534
Unfavorable changes	[5]	(131)	(518)
Equity securities
Recognition in profit or loss
Favorable changes	[2],[3]	11,259	16,125
Unfavorable changes	[2],[3]	(8,192)	(8,275)
Other comprehensive income
Favorable changes	[2],[3]	1,049	973
Unfavorable changes	[2],[3]	(813)	(744)
Loans measured at fair value through profit or loss
Recognition in profit or loss
Favorable changes	[2],[6]	3,062	3,316
Unfavorable changes	[2],[6]	(2,742)	(2,952)
Other comprehensive income
Favorable changes	[2],[6]	0	0
Unfavorable changes	[2],[6]	₩ 0	₩ 0
[1]	For derivative financial instruments, changes in fair value are calculated by shifting principal unobservable input parameters such as price of underlying asset and volatility by ± 10%.
[2]	For financial instruments at fair value through profit or loss, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate, recovery rate, liquidation value by ±1%p and volatility of underlying asset, growth rate by ±1%p or ±10% and correlation coefficient by ±10%.
[3]	For equity securities, changes in fair value are calculated by shifting principal unobservable input parameters such as correlation between discount rate (-1%p~1%p) and growth rate (-1%p~1%p) or correlation between liquidation value (-1%p~1%p) and discount rate (-1%p~1%p).
[4]	For beneficiary certificates, it is practically impossible to analyze sensitivity of changes in unobservable inputs. However, for beneficiary certificates whose underlying assets are real estates, changes in fair value are calculated by shifting rate of real estate price fluctuation by -1%p~1%p, and for beneficiary certificates whose underlying assets are equity investments, changes in fair value are calculated by shifting principal unobservable input parameters such as liquidation value by -1%p~1%p and discount rate by -1%p~1%p. There is no significant correlation among major unobservable inputs.
[5]	For loans measured at fair value through other comprehensive income, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate and growth rate by ±1%p.
[6]	For loans, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate by -1%p~1%p.

Financial Assets and Financi_10

Financial Assets and Financial Liabilities - Summary of Sensitivity Analysis of Changes In Unobservable Inputs Liabilities (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Recognition in profit or loss
Favorable changes		₩ 109,665	₩ 54,114
Unfavorable changes		(112,106)	(50,134)
Other comprehensive income
Favorable changes		109,470	0
Unfavorable changes		(111,902)	0
Financial instruments designated at fair value through profit or loss
Recognition in profit or loss
Favorable changes		78,355	46,859	[1]
Unfavorable changes		(82,797)	(42,995)	[1]
Other comprehensive income
Favorable changes		78,356	0	[1]
Unfavorable changes		(82,797)	0	[1]
Derivatives held for trading
Recognition in profit or loss
Favorable changes	[2]	31,310	7,255
Unfavorable changes	[2]	(29,309)	(7,139)
Other comprehensive income
Favorable changes	[2]	31,114	0
Unfavorable changes	[2]	₩ (29,105)	₩ 0
[1]	For financial instruments at fair value through profit or loss, changes in fair value are calculated by shifting principal unobservable input parameters such as discount rate, recovery rate, liquidation value by ±1%p and volatility of underlying asset, growth rate by ±1%p or ±10% and correlation coefficient by ±10%.
[2]	For derivative financial instruments, changes in fair value are calculated by shifting principal unobservable input parameters such as price of underlying asset and volatility by ± 10%.

Financial Assets and Financi_11

Financial Assets and Financial Liabilities - Summary of Day one Gain or Loss (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of aggregate difference between fair value at initial recognition and transaction price yet to be recognised in profit or loss [abstract]
Balance at the beginning of the year	₩ 61,393	₩ 45,767
New transactions	166,443	166,555
Changes during the year	(150,628)	(150,929)
Balance at the end of the year	₩ 77,208	₩ 61,393

Financial Assets and Financi_12

Financial Assets and Financial Liabilities - Summary of Carrying Amounts of Financial Instruments Category Assets (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	₩ 634,240,053	₩ 582,219,781
Cash and due from financial institutions
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	31,009,374	25,608,842
Financial assets at fair value through profit or loss
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	66,005,815	61,035,455
Derivatives
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	3,721,370	5,545,385
Loans measured at amortized cost
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	417,900,273	377,166,984
Financial investments
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	104,847,871	98,695,426
Other financial assets
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	10,755,350	14,167,689
Financial instruments at fair value through profit or loss
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	69,538,357	66,245,967
Financial instruments at fair value through profit or loss | Financial assets at fair value through profit or loss
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	66,005,815	61,035,455
Financial instruments at fair value through profit or loss | Derivatives
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	3,532,542	5,210,512
Financial instruments at fair value through other comprehensive income
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	56,573,115	58,750,298
Financial instruments at fair value through other comprehensive income | Financial investments
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	56,573,115	58,750,298
Financial instruments designated at fair value through other comprehensive income
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	3,803,128	3,074,899
Financial instruments designated at fair value through other comprehensive income | Financial investments
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	3,803,128	3,074,899
Financial instruments at amortized cost
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	504,136,625	453,813,744
Financial instruments at amortized cost | Cash and due from financial institutions
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	31,009,374	25,608,842
Financial instruments at amortized cost | Loans measured at amortized cost
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	417,900,273	377,166,984
Financial instruments at amortized cost | Financial investments
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	44,471,628	36,870,229
Financial instruments at amortized cost | Other financial assets
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	10,755,350	14,167,689
Derivatives held for hedging
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	188,828	334,873
Derivatives held for hedging | Derivatives
Carrying Amounts Of Financial Assets Line Items [Line Items]
Financial assets	₩ 188,828	₩ 334,873

Financial Assets and Financi_13

Financial Assets and Financial Liabilities - Summary of Carrying Amounts of Financial Instruments Category Liabilities (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	₩ 541,632,120	₩ 496,813,306
Financial liabilities at fair value through profit or loss
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	12,088,980	11,810,058
Derivatives
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	3,682,258	5,222,897
Deposits
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	372,023,918	338,580,220
Borrowings
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	56,912,374	49,827,156
Debentures
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	67,430,188	62,760,687
Other financial liabilities
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	29,494,402	28,612,288
Financial instruments at fair value through profit or loss
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	6,449,373	7,040,023
Financial instruments at fair value through profit or loss | Financial liabilities at fair value through profit or loss
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	2,939,584	2,025,951
Financial instruments at fair value through profit or loss | Derivatives
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	3,509,789	5,014,072
Financial instruments designated at fair value through profit or loss
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	9,149,396	9,784,107
Financial instruments designated at fair value through profit or loss | Financial liabilities at fair value through profit or loss
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	9,149,396	9,784,107
Financial instruments at amortized cost
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	525,860,882	479,780,351
Financial instruments at amortized cost | Deposits
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	372,023,918	338,580,220
Financial instruments at amortized cost | Borrowings
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	56,912,374	49,827,156
Financial instruments at amortized cost | Debentures
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	67,430,188	62,760,687
Financial instruments at amortized cost | Other financial liabilities
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	29,494,402	28,612,288
Derivatives held for hedging
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	172,469	208,825
Derivatives held for hedging | Derivatives
Carrying Amounts Of Financial Liabilities Line Items [Line Items]
Financial liabilities	₩ 172,469	₩ 208,825

Financial Assets and Financi_14

Financial Assets and Financial Liabilities - Summary of Maximum Exposure Loss from Continuing Involvement Derecognized Financial Assets (Details) - Financial assets at fair value through profit or loss - Subordinate debt - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of continuing involvement in derecognised financial assets [line items]
Carrying amount of continuing involvement	₩ 10,652	₩ 13,202
Fair value of continuing involvement	10,652	13,202
Discovery 2nd Securitization Specialty Co., Ltd.
Disclosure of continuing involvement in derecognised financial assets [line items]
Carrying amount of continuing involvement	5,189	5,190
Fair value of continuing involvement	5,189	5,190
FK 1411 ABS Ltd.
Disclosure of continuing involvement in derecognised financial assets [line items]
Carrying amount of continuing involvement		1,062
Fair value of continuing involvement		1,062
AP 3B ABS Ltd.
Disclosure of continuing involvement in derecognised financial assets [line items]
Carrying amount of continuing involvement		646
Fair value of continuing involvement		646
AP 4D ABS Ltd.
Disclosure of continuing involvement in derecognised financial assets [line items]
Carrying amount of continuing involvement	5,463	6,304
Fair value of continuing involvement	₩ 5,463	₩ 6,304

Financial Assets and Financi_15

Financial Assets and Financial Liabilities - Summary of Transferred Financial Assets Derecognized Entirety (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Carrying amount of underlying assets		₩ 2,842,657	₩ 2,899,777
Fair value of underlying assets		2,831,004	2,889,789
Carring Amount of transferred assets		12,309,025	15,845,836
Carrying amount of related liabilities		10,978,971	13,398,140
Carrying amount of senior debentures		1,731,873	1,757,149
Fair value of senior debentures		1,739,801	1,846,091
Bonds sold under repurchase agreements
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Carring Amount of transferred assets		11,273,036	13,994,352
Carrying amount of related liabilities		10,978,971	13,398,140
Amounts of the bonds sold under repurchase agreements		2,050,635	2,147,975
Government bond
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Carring Amount of transferred assets		1,035,736	₩ 1,831,673
KB Kookmin Card 4th Securitization Co., Ltd.
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Description of nature of relationship between transferred financial assets that are not derecognised in their entirety and associated liabilities			The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.
Carrying amount of underlying assets			₩ 490,465
Fair value of underlying assets			488,251
Carrying amount of senior debentures	[1]		219,419
Fair value of senior debentures			226,401
Stock
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Carring Amount of transferred assets		₩ 253	₩ 19,811
KB Kookmin Card 5th Securitization Co., Ltd.
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Description of nature of relationship between transferred financial assets that are not derecognised in their entirety and associated liabilities		The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.	The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.
Carrying amount of underlying assets		₩ 492,108	₩ 476,523
Fair value of underlying assets		490,113	474,481
Carrying amount of senior debentures		299,881	299,838	[1]
Fair value of senior debentures		₩ 302,564	₩ 304,914
KB Kookmin Card 6th Securitization Co., Ltd.
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Description of nature of relationship between transferred financial assets that are not derecognised in their entirety and associated liabilities		The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.	The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.
Carrying amount of underlying assets		₩ 726,803	₩ 701,360
Fair value of underlying assets		723,835	698,421
Carrying amount of senior debentures	[1]	474,000	434,492
Fair value of senior debentures		₩ 474,766	₩ 472,861
KB Kookmin Card 7th Securitization Co., Ltd.
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Description of nature of relationship between transferred financial assets that are not derecognised in their entirety and associated liabilities		The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.	The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.
Carrying amount of underlying assets		₩ 948,129	₩ 924,159
Fair value of underlying assets		943,689	919,775
Carrying amount of senior debentures		598,180	553,711	[1]
Fair value of senior debentures		₩ 596,272	₩ 591,609
KB Auto Second Asset Securitization Specialty Co., Ltd.2
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Description of nature of relationship between transferred financial assets that are not derecognised in their entirety and associated liabilities		The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as when the trusted assets do not meet the eligibility requirements.	The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as when the trusted assets do not meet the eligibility requirements.
Carrying amount of underlying assets	[2]	₩ 129,867	₩ 307,270
Fair value of underlying assets	[2]	129,385	308,861
Carrying amount of senior debentures	[2]	59,968	249,689
Fair value of senior debentures	[2]	₩ 59,935	₩ 250,306
KB Kookmin Card 8th Securitization Co., Ltd.1
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Description of nature of relationship between transferred financial assets that are not derecognised in their entirety and associated liabilities		The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.
Carrying amount of underlying assets	[1]	₩ 545,750
Fair value of underlying assets		543,982
Carrying amount of senior debentures	[1]	299,844
Fair value of senior debentures		₩ 306,264
[1]	The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as the remaining balance of the eligible underlying assets in trust-type asset securitization is below the solvency ratio (minimum ratio: 104.5%) of the beneficiary interest in the trust. To avoid such early redemption, the Group entrusts credit card accounts and deposits in addition to the previously entrusted credit card accounts.
[2]	The Group has an obligation to early redeem the securitized debentures in the event of situations prescribed by the asset securitization contract, such as when the trusted assets do not meet the eligibility requirements.

Financial Assets and Financi_16

Financial Assets and Financial Liabilities - Summary of Financial Assets Subject Offsetting (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	₩ 58,041,714	₩ 54,906,857
Gross liabilities offset	(44,810,815)	(41,298,745)
Net amounts in the statement of financial position	13,230,899	13,608,112
Non-offsetting amount
Financial Instruments	(10,691,324)	(10,975,398)
Cash Collateral	(235,749)	(263,564)
Net amount	2,303,826	2,369,150
Derivatives held for trading and Derivatives linked securities
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	3,673,348	5,425,708
Net amounts in the statement of financial position	3,673,348	5,425,708
Derivatives held for hedging
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	188,828	334,874
Net amounts in the statement of financial position	188,828	334,874
Non-offsetting amount
Financial Instruments	(2,352,365)	(3,940,729)
Cash Collateral	(235,749)	(263,564)
Net amount	1,274,062	1,556,289
Unsettled spot exchange receivable
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	2,384,503	3,435,657
Net amounts in the statement of financial position	2,384,503	3,435,657
Non-offsetting amount
Financial Instruments	(2,380,556)	(3,434,222)
Net amount	3,947	1,435
Bonds purchased under repurchase agreements
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	5,955,194	3,600,447
Net amounts in the statement of financial position	5,955,194	3,600,447
Non-offsetting amount
Financial Instruments	(5,955,194)	(3,600,447)
Domestic exchange settlement debits
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	43,497,849	37,549,292
Gross liabilities offset	(42,482,911)	(36,823,836)
Net amounts in the statement of financial position	1,014,938	725,456
Non-offsetting amount
Net amount	1,014,938	725,456
Other financial instruments
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross assets	2,341,992	4,560,879
Gross liabilities offset	(2,327,904)	(4,474,909)
Net amounts in the statement of financial position	14,088	85,970
Non-offsetting amount
Financial Instruments	(3,209)
Net amount	₩ 10,879	₩ 85,970

Financial Assets and Financi_17

Financial Assets and Financial Liabilities - Summary of Financial Liabilities Subject Offsetting (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		₩ 74,235,755	₩ 69,730,430
Gross assets offset		(44,810,815)	(41,310,544)
Net amounts in the statement of financial position		29,424,940	28,419,886
Non-offsetting amount
Financial Instruments		(27,778,432)	(25,985,729)
Cash Collateral		(75,253)	(77,324)
Net amount		1,571,255	2,356,833
Derivatives held for trading and Derivatives linked securities
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		4,132,915	5,300,028
Net amounts in the statement of financial position		4,132,915	5,300,028
Derivatives held for hedging
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		172,470	208,825
Net amounts in the statement of financial position		172,470	208,825
Non-offsetting amount
Financial Instruments		(3,069,591)	(3,365,443)
Cash Collateral		(75,253)	(77,324)
Net amount		1,160,541	2,066,086
Unsettled spot exchange payable
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		2,383,399	3,434,887
Net amounts in the statement of financial position		2,383,399	3,434,887
Non-offsetting amount
Financial Instruments		(2,380,556)	(3,434,222)
Net amount		2,843	665
Bonds sold under repurchase agreements
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities	[1]	14,372,761	16,329,799
Gross assets offset	[1]		(11,800)
Net amounts in the statement of financial position	[1]	14,372,761	16,317,999
Non-offsetting amount
Financial Instruments	[1]	(14,372,761)	(16,317,999)
Securities borrowing agreements
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		2,826,885	1,934,736
Net amounts in the statement of financial position		2,826,885	1,934,736
Non-offsetting amount
Financial Instruments		(2,826,885)	(1,934,736)
Domestic exchange settlement credits
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		47,608,341	37,757,164
Gross assets offset		(42,482,911)	(36,823,835)
Net amounts in the statement of financial position		5,125,430	933,329
Non-offsetting amount
Financial Instruments		(5,125,430)	(933,329)
Other financial instruments
Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position [abstract]
Gross liabilities		2,738,984	4,764,991
Gross assets offset		(2,327,904)	(4,474,909)
Net amounts in the statement of financial position		411,080	290,082
Non-offsetting amount
Financial Instruments		(3,209)
Net amount		₩ 407,871	₩ 290,082
[1]	Includes bonds sold under repurchase agreements to customers.

Financial Assets and Financi_18

Financial Assets and Financial Liabilities - Summary of Carrying Amounts of the Underlying Assets and the Associated Liabilities (Detail) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Disclosure of Purchase commitments of securitized debentures [Line Items]
Assets that entity continues to recognise		₩ 12,309,025	₩ 15,845,836
Associated liabilities that entity continues to recognise		1,731,873	1,757,149
Debentures
Disclosure of Purchase commitments of securitized debentures [Line Items]
Associated liabilities that entity continues to recognise		4,010,436	3,450,505
Financial assets at fair value, class [member]
Disclosure of Purchase commitments of securitized debentures [Line Items]
Assets that entity continues to recognise		289,188	180,180
Financial assets at fair value, class [member] | Debentures
Disclosure of Purchase commitments of securitized debentures [Line Items]
Assets that entity continues to recognise		4,013,392	3,452,408
Financial assets at amortised cost, class [member]
Disclosure of Purchase commitments of securitized debentures [Line Items]
Assets that entity continues to recognise	[1]	₩ 3,724,204	₩ 3,272,228
[1]	Before netting of allowance

Due From Financial Institutio_3

Due From Financial Institutions at Amortized Cost - Summary of Details of Due from Financial Institutions (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 28,365,356	₩ 22,723,354
Due from financial institutions in Korean won
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	19,393,790	15,688,428
Due from financial institutions in Korean won | The Bank of Korea
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 15,317,033	₩ 11,242,803
Due from financial institutions in Korean won | The Bank of Korea | Bottom of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.00%	0.00%
Due from financial institutions in Korean won | The Bank of Korea | Top of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.97%	0.97%
Due from financial institutions in Korean won | Hana Bank and others
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 3,390,521	₩ 3,692,044
Due from financial institutions in Korean won | Hana Bank and others | Bottom of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.00%	0.00%
Due from financial institutions in Korean won | Hana Bank and others | Top of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		5.20%	5.20%
Due from financial institutions in Korean won | Korea Securities Finance Corporation and others
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 686,236	₩ 753,581
Due from financial institutions in Korean won | Korea Securities Finance Corporation and others | Bottom of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.00%	0.00%
Due from financial institutions in Korean won | Korea Securities Finance Corporation and others | Top of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		1.98%	1.98%
Due from financial institutions in foreign currencies
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 8,971,566	₩ 7,034,926
Due from financial institutions in foreign currencies | Bank of Communications Co., Ltd. and others
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 587,782	₩ 739,637
Due from financial institutions in foreign currencies | Bank of Communications Co., Ltd. and others | Bottom of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.00%	0.00%
Due from financial institutions in foreign currencies | Bank of Communications Co., Ltd. and others | Top of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		6.10%	6.10%
Due from financial institutions in foreign currencies | The Bank of Korea and others
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 6,329,310	₩ 4,215,918
Due from financial institutions in foreign currencies | The Bank of Korea and others | Bottom of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.00%	0.00%
Due from financial institutions in foreign currencies | The Bank of Korea and others | Top of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		4.00%	4.00%
Due from financial institutions in foreign currencies | Societe Generale (Paris) and others
Cash And Cash Equivalents [line Items]
Due from financial institutions at amortized cost	[1]	₩ 2,054,474	₩ 2,079,371
Due from financial institutions in foreign currencies | Societe Generale (Paris) and others | Bottom of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		0.00%	0.00%
Due from financial institutions in foreign currencies | Societe Generale (Paris) and others | Top of range [member]
Cash And Cash Equivalents [line Items]
Interest rate(%)		6.50%	6.50%
[1]	Before netting of allowance

Due From Financial Institutio_4

Due From Financial Institutions at Amortized Cost - Summary of Restricted Cash and Cash Equivalents (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 20,754,706	₩ 15,303,363
Due From Financial Institutions In Korean Won [Member]
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	16,649,120	12,561,246
Due From Financial Institutions In Korean Won [Member] | Shinhan Bank and others [Member]
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 803,445	₩ 772,986
Reason for restriction		Net settlement and others	Net settlement and others
Due From Financial Institutions In Korean Won [Member] | NH Investment Securities Co., Ltd. and others
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 528,642	₩ 545,457
Reason for restriction		Derivatives margin account and others	Derivatives margin account and others
Due From Financial Institutions In Korean Won [Member] | The Bank of Korea
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 15,317,033	₩ 11,242,803
Reason for restriction		Bank of Korea Act	Bank of Korea Act
Due From Financial Institutions In Foreign Currencies [Member]
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 4,105,586	₩ 2,742,117
Due From Financial Institutions In Foreign Currencies [Member] | Societe Generale Paris And Others
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 1,774,388	₩ 1,597,960
Reason for restriction		Derivatives margin account and others	Derivatives margin account and others
Due From Financial Institutions In Foreign Currencies [Member] | Bank of Communications Co., Ltd. and others
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 68,588	₩ 46,428
Reason for restriction		Bank Act of the State of New York and others	Bank Act of the State of New York and others
Due From Financial Institutions In Foreign Currencies [Member] | Bank of Indonesia and others
Restricted Cash and Cash Equivalents Items [line Items]
Restricted due from financial institutions at amortized cost	[1]	₩ 2,262,610	₩ 1,097,729
Reason for restriction		Indonesian law and others	Indonesian law and others
[1]	Before netting of allowance

Due From Financial Institutio_5

Due From Financial Institutions at Amortized Cost - Summary of Changes in the Allowances for Due from Financial Institutions Losses (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Transfer between stages:
Reversal of credit losses	₩ 8,504	₩ 5,234	₩ (483)
Due from financial institutions measured at amortized cost | 12-month expected credit losses
Disclosure Of Changes In The Allowances For Due From Financial Institutions At Amortized Cost Losses Line Items [line Items]
Beginning	2,947	3,164
Transfer between stages:
Transfer to 12-month expected credit losses	0	0
Transfer to lifetime expected credit losses	0	0
Impairment	0	0
Reversal of credit losses	(51)	(416)
Business combination		154
Others	73	45
Ending	2,969	2,947	3,164
Due from financial institutions measured at amortized cost | Lifetime expected credit losses - Non-impaired
Disclosure Of Changes In The Allowances For Due From Financial Institutions At Amortized Cost Losses Line Items [line Items]
Beginning	34	1,188
Transfer between stages:
Transfer to 12-month expected credit losses	0	0
Transfer to lifetime expected credit losses	0	0
Impairment	0	0
Reversal of credit losses	(35)	(1,128)
Business combination		0
Others	1	(26)
Ending	0	34	1,188
Due from financial institutions measured at amortized cost | Lifetime expected credit losses - Impaired
Disclosure Of Changes In The Allowances For Due From Financial Institutions At Amortized Cost Losses Line Items [line Items]
Beginning	282	360
Transfer between stages:
Transfer to 12-month expected credit losses	0	0
Transfer to lifetime expected credit losses	0	0
Impairment	0	0
Reversal of credit losses	(282)	0
Business combination		0
Others	0	(78)
Ending	₩ 0	₩ 282	₩ 360

Assets pledged as collateral -

Assets pledged as collateral - Schedule of assets pledged as collateral (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financial Instruments Owned And Pledged As Collateral [Line Items]
Borrowing Securities And Securities Held As Collateral That Group Provides As Collateral For Liabilities Or Contingent Liabilities	₩ 6,165,555	₩ 4,680,816
Due from banking institutions | Shinhan Banks and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount		₩ 1,293,930
Reasons of pledge		Borrowings from bank and others
Due from banking institutions | Shinhan Banks and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 1,163,138
Reasons of pledge	Borrowings from bank and others
Financial assets at fair value through profit or loss
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 19,024,219	₩ 18,473,401
Financial assets at fair value through profit or loss | The Korea Securities Depository and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 8,689,639	₩ 10,733,047
Reasons of pledge	Repurchase agreements	Repurchase agreements
Financial assets at fair value through profit or loss | The Korea Securities Depository and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 9,294,924	₩ 7,009,580
Reasons of pledge	Securities borrowing transactions	Securities borrowing transactions
Financial assets at fair value through profit or loss | Samsung Futures Inc. and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 1,039,656	₩ 730,774
Reasons of pledge	Derivatives transactions	Derivatives transactions
Financial assets at fair value through other comprehensive income
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 8,373,487	₩ 8,257,395
Financial assets at fair value through other comprehensive income | The Korea Securities Depository and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 2,048,029	₩ 2,216,165
Reasons of pledge	Repurchase agreements	Repurchase agreements
Financial assets at fair value through other comprehensive income | The Korea Securities Depository and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 1,523,593	₩ 1,322,998
Reasons of pledge	Securities borrowing transactions	Securities borrowing transactions
Financial assets at fair value through other comprehensive income | The Bank of Korea
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 2,843,426	₩ 2,837,452
Reasons of pledge	Borrowings from the Bank of Korea	Borrowings from the Bank of Korea
Financial assets at fair value through other comprehensive income | The Bank of Korea
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 1,249,049	₩ 1,610,691
Reasons of pledge	Settlement risk of the Bank of Korea	Settlement risk of the Bank of Korea
Financial assets at fair value through other comprehensive income | Samsung Futures Inc. and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 709,390	₩ 270,089
Reasons of pledge	Derivatives transactions	Derivatives transactions
Securities measured at amortized cost
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 9,704,231	₩ 9,339,444
Securities measured at amortized cost | The Korea Securities Depository and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 494,973	₩ 664,438
Reasons of pledge	Repurchase agreements	Repurchase agreements
Securities measured at amortized cost | The Bank of Korea
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 4,847,855	₩ 4,295,149
Reasons of pledge	Borrowings from the Bank of Korea	Borrowings from the Bank of Korea
Securities measured at amortized cost | The Bank of Korea
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 3,948,622	₩ 3,677,922
Reasons of pledge	Settlement risk of the Bank of Korea	Settlement risk of the Bank of Korea
Securities measured at amortized cost | Samsung Futures Inc. and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 144,014	₩ 103,748
Reasons of pledge	Derivatives transactions	Derivatives transactions
Securities measured at amortized cost | Others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 268,767	₩ 598,187
Reasons of pledge	Others	Others
Loans | Others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 9,659,575	₩ 10,699,721
Reasons of pledge	Covered bond and others	Covered bond
Real estate
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 49,523,203	₩ 49,544,833
Real estate | LGIM COMMERCIAL LENDING Ltd and others
Financial Instruments Owned And Pledged As Collateral [Line Items]
Carrying amount	₩ 1,598,553	₩ 1,480,942
Reasons of pledge	Borrowings from bank and others	Borrowings from bank and others

Assets pledged as collateral _2

Assets pledged as collateral - Schedule of the fair values of collateral available to sell or repledge And Collateral Sold Or repledged (Details) - Securities - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
The Fair Values Of Collateral Available To Sell Or Repledge And Collateral Sold Or Repledged [Line Items]
Fair value of collateral held	₩ 6,451,850	₩ 3,732,013
Fair value of collateral sold or repledged	0	0
Total	₩ 6,451,850	₩ 3,732,013

Derivative Financial Instrume_3

Derivative Financial Instruments and Hedge Accounting - Summary Of Derivative Financial Instruments (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Fair value hedge
Disclosure of detailed information about hedging instruments [line items]
Notional amount		₩ 10,615,352	₩ 11,389,923
Assets		129,726	286,952
Liabilities		93,108	54,458
Changes in fair value		(207,934)	74,372
Cash Flow Hedge
Disclosure of detailed information about hedging instruments [line items]
Notional amount		7,608,514	6,389,915
Assets		59,102	42,121
Liabilities		70,863	153,244
Changes in fair value		96,491	(55,240)
Hedge of Net Investments in Foreign Operations
Disclosure of detailed information about hedging instruments [line items]
Notional amount		1,364,863	1,086,069
Assets		0	5,800
Liabilities		1,281,725	843,237
Changes in fair value		(88,729)	88,769
Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		549,312,247	469,476,648
Assets		3,532,542	5,210,512
Liabilities		3,509,789	5,014,070
Debentures in foreign currencies | Hedge of Net Investments in Foreign Operations
Disclosure of detailed information about hedging instruments [line items]
Notional amount		1,273,227	842,112
Assets		0	0
Liabilities		1,273,227	842,112
Changes in fair value		(80,235)	74,363
Forwards | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		4,037,717	1,824,000
Assets		140,126	50,580
Liabilities		126,610	107,218
Futures | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount	[1]	6,479,692	4,540,235
Assets	[1]	1,903	43
Liabilities	[1]	2,464	1,834
Swaps | Fair value hedge
Disclosure of detailed information about hedging instruments [line items]
Notional amount		8,910,139	9,217,731
Assets		127,290	158,914
Liabilities		38,253	51,842
Changes in fair value		(33,227)	(23,022)
Swaps | Cash Flow Hedge
Disclosure of detailed information about hedging instruments [line items]
Notional amount		4,553,250	3,532,480
Assets		12,575	1,286
Liabilities		9,532	37,120
Changes in fair value		36,164	(11,940)
Swaps | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		334,721,395	300,105,350
Assets		354,686	631,917
Liabilities		397,046	682,401
Options | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		12,547,000	14,779,000
Assets		176,274	248,437
Liabilities		199,567	302,134
Interest rate | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		357,785,804	321,248,585
Assets		672,989	930,977
Liabilities		725,687	1,093,587
Swaps | Cash Flow Hedge
Disclosure of detailed information about hedging instruments [line items]
Notional amount		3,055,264	2,857,435
Assets		46,527	40,835
Liabilities		61,331	116,124
Changes in fair value		60,327	(43,300)
Swaps | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		65,028,025	49,756,478
Assets		1,082,873	1,897,636
Liabilities		1,331,597	1,349,919
Swaps | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		5,207,198	5,434,057
Assets		322,888	423,297
Liabilities		132,619	123,242
Commodity | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		6,370	25,532
Assets		43	419
Liabilities		82	1,072
Others | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		1,695,540	1,476,310
Assets		20,904	36,783
Liabilities		117,629	144,076
Swaps | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		2,602,382	3,015,782
Assets		18,979	19,395
Liabilities		7,409	9,700
Swaps | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		0	13,923
Assets		0	268
Liabilities		0	991
Stock and index | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		14,437,866	12,943,914
Assets		432,564	579,163
Liabilities		380,520	400,770
Futures | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount	[1]	361,791	376,281
Assets	[1]	464	158
Liabilities	[1]	877	695
Forwards | Fair value hedge
Disclosure of detailed information about hedging instruments [line items]
Notional amount		1,705,213	2,172,192
Assets		2,436	128,038
Liabilities		54,855	2,616
Changes in fair value		(174,707)	97,394
Forwards | Hedge of Net Investments in Foreign Operations
Disclosure of detailed information about hedging instruments [line items]
Notional amount		91,636	243,957
Assets		0	5,800
Liabilities		8,498	1,125
Changes in fair value		(8,494)	14,406
Forwards | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		105,509,405	78,255,991
Assets		1,296,083	1,712,560
Liabilities		934,944	1,986,239
Options | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		1,885,064	2,377,775
Assets		7,643	33,421
Liabilities		11,044	28,012
Currency | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		172,784,285	130,766,525
Assets		2,387,063	3,643,775
Liabilities		2,278,462	3,364,865
Futures | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount	[1]	1,612,965	1,027,347
Assets	[1]	14,338	20,061
Liabilities	[1]	6,530	2,246
Options | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		7,617,703	6,482,510
Assets		95,338	135,805
Liabilities		241,371	275,282
Credit | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount		2,602,382	3,015,782
Assets		18,979	19,395
Liabilities		7,409	9,700
Futures | Held For Trading
Disclosure of detailed information about hedging instruments [line items]
Notional amount	[1]	6,370	11,609
Assets	[1]	43	151
Liabilities	[1]	₩ 82	₩ 81
[1]	Gains or losses arising from some daily mark-to-market futures are reflected in the margin accounts.

Derivative Financial Instrume_4

Derivative Financial Instruments and Hedge Accounting - Summary of Average of Hedge Ratio for Each Type of Hedge Accounting (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	10,615,352,000,000	11,389,923,000,000
Average interest rate	1.18	0.97
Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,150.30	1,157.28
Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,409.23	1,353.36
Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	859.41	835.43
Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,557.47	1,546.54
Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	7,608,514,000,000	6,389,915,000,000
Average interest rate	1.21	1.36
Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,152.89	1,152.37
Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,351.76	1,312.93
Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	853.40	837
Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	866.14	858.33
Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	91,636,000,000	243,957,000,000
Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,071	1,111.45
Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,465.26	1,465.26
1 year | Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	2,223,113	5,266,994,000,000
Average interest rate	0.94	0.76
1 year | Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,144.74	1,160.33
1 year | Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,359.59	1,353.28
1 year | Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	859.41	835.43
1 year | Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,554.65	1,546.54
1 year | Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	4,150,546,000,000	2,568,922,000,000
Average interest rate	1.01	0.83
1 year | Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,159.92	1,113.33
1 year | Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,312.75	1,306.76
1 year | Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	837
1 year | Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	831.49
1 year | Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	91,636,000,000	217,274,000,000
1 year | Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,071	1,111.45
1 year | Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,465.26	0
2 years | Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	1,423,760,000,000	1,083,877,000,000
Average interest rate	1.23	0.81
2 years | Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,154.78	1,115.45
2 years | Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,363.95	0
2 years | Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
2 years | Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
2 years | Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	1,763,372,000,000	1,767,357,000,000
Average interest rate	1.51	1.66
2 years | Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,178.13	1,160.46
2 years | Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,321	1,312.75
2 years | Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
2 years | Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	866.14	0
2 years | Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	0	26,683,000,000
2 years | Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
2 years | Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	1,465.26
3 years | Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	967,376,000,000	512,608,000,000
Average interest rate	1.04	1
3 years | Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,169.72	1,151.50
3 years | Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,394.84	1,366.30
3 years | Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
3 years | Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
3 years | Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	322,735,000,000	1,277,053,000,000
Average interest rate	2.06	2.48
3 years | Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,145.05	1,181.36
3 years | Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,364	1,321
3 years | Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	856.40	0
3 years | Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	866.14
3 years | Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	0	0
3 years | Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
3 years | Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
4 years | Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	2,153,200,000,000	620,788,000,000
Average interest rate	1.16	1.07
4 years | Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
4 years | Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
4 years | Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
4 years | Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,620.05	0
4 years | Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	641,733,000,000	166,643,000,000
Average interest rate	1.87	2
4 years | Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,139.40	1,128.30
4 years | Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,374.73	0
4 years | Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	851.50	0
4 years | Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
4 years | Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	0	0
4 years | Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
4 years | Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	1,428,673,000,000	1,462,964,000,000
Average interest rate	1.06	1.21
5 years | Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,458.92	0
5 years | Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	580,128,000,000	509,940,000,000
Average interest rate	1.84	1.63
5 years | Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	1,123.13	1,142.05
5 years | Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	1,340.64
5 years | Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	0	0
5 years | Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
5 years | Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Fair value hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	2,419,230,000,000	2,442,692,000,000
Average interest rate	1.39	1.14
Over 5 years | Fair value hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Fair value hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Fair value hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Fair value hedge | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Cash Flow Hedge
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	150,000,000,000	100,000,000,000
Average interest rate	2.12	1.67
Over 5 years | Cash Flow Hedge | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Cash Flow Hedge | EUR
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Cash Flow Hedge | AUD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Cash Flow Hedge | SGD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Hedge of net investments in foreign operations
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Nominal amount of the hedging instrument	0	0
Over 5 years | Hedge of net investments in foreign operations | USD
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0
Over 5 years | Hedge of net investments in foreign operations | GBP
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Average foreign exchange rate	0	0

Derivative Financial Instrume_5

Derivative Financial Instruments and Hedge Accounting - Summary of Hedged Item (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Disclosure of detailed information about hedged items [line items]
Cash flow hedge reserve	₩ 20,864	$ 17,599	₩ (1,264)	₩ (33,182)
Foreign currency translation reserve	(57,935)	$ (48,870)	64,269	₩ (8,900)
Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	7,638,783		6,384,347
Carrying amount - Liabilities	3,717,822		5,730,262
Accumulated amount of hedge adjustments - Assets	90,612		379,555
Accumulated amount of hedge adjustments - Liabilities	(53,243)		76,582
Changes in fair value	201,845		(11,946)
Cash Flow Hedge
Disclosure of detailed information about hedged items [line items]
Changes in fair value	(23,823)		13,237
Cash flow hedge reserve	(7,733)		(28,597)
Interest rate | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	5,194,890		3,714,937
Carrying amount - Liabilities	3,717,822		5,730,262
Accumulated amount of hedge adjustments - Assets	(42,656)		68,810
Accumulated amount of hedge adjustments - Liabilities	(53,243)		76,582
Changes in fair value	21,169		28,764
Interest rate | Cash Flow Hedge
Disclosure of detailed information about hedged items [line items]
Changes in fair value	(36,428)		12,172
Cash flow hedge reserve	4,864		(22,439)
Debt securities in Korean won | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	1,627,228		1,001,957
Carrying amount - Liabilities	0		0
Accumulated amount of hedge adjustments - Assets	(20,272)		5,888
Accumulated amount of hedge adjustments - Liabilities	0		0
Changes in fair value	(26,247)		402
Debt securities in foreign currencies | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	2,443,893		2,669,410
Carrying amount - Liabilities	0		0
Accumulated amount of hedge adjustments - Assets	133,268		310,745
Accumulated amount of hedge adjustments - Liabilities	0		0
Changes in fair value	180,676		(40,710)
Debt securities in foreign currencies | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	3,567,662		2,712,980
Carrying amount - Liabilities	0		0
Accumulated amount of hedge adjustments - Assets	(22,384)		62,922
Accumulated amount of hedge adjustments - Liabilities	0		0
Changes in fair value	(71,246)		42,382
Currency | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	2,443,893		2,669,410
Carrying amount - Liabilities	0		0
Accumulated amount of hedge adjustments - Assets	133,268		310,745
Accumulated amount of hedge adjustments - Liabilities	0		0
Changes in fair value	180,676		(40,710)
Currency | Cash Flow Hedge
Disclosure of detailed information about hedged items [line items]
Changes in fair value	12,605		1,065
Cash flow hedge reserve	(12,597)		(6,158)
Currency | Hedge of net investments in foreign operations
Disclosure of detailed information about hedged items [line items]
Changes in fair value	88,729		(88,769)
Foreign currency translation reserve	(35,658)		22,278
Deposits in foreign currencies | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	0		0
Carrying amount - Liabilities	93,521		121,768
Accumulated amount of hedge adjustments - Assets	0		0
Accumulated amount of hedge adjustments - Liabilities	(1,319)		2,088
Changes in fair value	3,222		(4,491)
Debentures in Korean won | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	0		0
Carrying amount - Liabilities	2,470,123		3,623,161
Accumulated amount of hedge adjustments - Assets	0		0
Accumulated amount of hedge adjustments - Liabilities	(79,877)		(6,839)
Changes in fair value	70,308		27,909
Debentures in foreign currencies | Fair value hedge
Disclosure of detailed information about hedged items [line items]
Carrying amount - Assets	0		0
Carrying amount - Liabilities	1,154,178		1,985,333
Accumulated amount of hedge adjustments - Assets	0		0
Accumulated amount of hedge adjustments - Liabilities	27,953		81,333
Changes in fair value	₩ 45,132		₩ (37,438)

Derivative Financial Instrume_6

Derivative Financial Instruments and Hedge Accounting - Summary of Gains and Losses from Hedging Instruments (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Gains And Losses From Hedging Instruments And Hedged Items Attributable To The Hedged [Abstract]
Income tax effect	₩ 25,599	₩ (24,500)	₩ 3,194
Fair value hedge
Gains And Losses From Hedging Instruments And Hedged Items Attributable To The Hedged [Abstract]
Hedge ineffectiveness recognized in profit or loss	(6,089)	62,426	(10,486)
Gains(losses) on hedging instruments	(187,364)	89,179	34,070
Gains (losses) on the hedged items attributable to the hedged risk	188,556	(26,899)	(44,655)
Total	1,192	62,280	(10,585)
Interest rate
Gains And Losses From Hedging Instruments And Hedged Items Attributable To The Hedged [Abstract]
Hedge ineffectiveness recognized in profit or loss	(12,058)	5,742	2,753
Currency
Gains And Losses From Hedging Instruments And Hedged Items Attributable To The Hedged [Abstract]
Hedge ineffectiveness recognized in profit or loss	5,969	56,684	(13,239)
Cash Flow Hedge
Gains And Losses From Hedging Instruments And Hedged Items Attributable To The Hedged [Abstract]
Gains(losses) on hedging instruments	96,491	(55,240)	(64,531)
Effective portion of gains (losses) on cash flow hedging instruments (recognized in other comprehensive income or loss)	95,478	(48,034)	(65,323)
Ineffective portion of gains (losses) on cash flow hedging instruments (recognized in profit or loss)	1,013	(7,206)	792
Reclassification to profit or loss	(53,080)	39,190	21,604
Income tax effect	(21,534)	7,580	10,537
Other comprehensive income (loss) after tax	20,864	(1,264)	(33,182)
Hedge of net investments in foreign operations
Gains And Losses From Hedging Instruments And Hedged Items Attributable To The Hedged [Abstract]
Gains(losses) on hedging instruments	(88,729)	88,769	(13,410)
Effective portion of gains(losses) on hedge of net investments in foreign operations(amount recognized in other comprehensive income)	(88,729)	88,769	(13,410)
Ineffective portion of gains(losses) on hedge of net investments in foreign operations (amount recognized in profit or loss)	0	0	0
Reclassification to profit or loss	5,195	0	1,316
Income tax effect	25,599	(24,500)	3,194
Other comprehensive income (loss) after tax	₩ (57,935)	₩ 64,269	₩ (8,900)

Derivative Financial Instrume_7

Derivative Financial Instruments and Hedge Accounting - Summary of Fair Value of Non Derivative Financial Instruments (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Hedge of Net Investments in Foreign Operations
Non Derivative Financial Instruments Designated As Hedging Instruments At Fair Value [Line Items]
Debentures in foreign currencies	₩ 1,275,291	₩ 852,570

Derivative Financial Instrume_8

Derivative Financial Instruments and Hedge Accounting - Summary of Interest Rate Benchmark Reform (Details) - 12 months ended Dec. 31, 2021 ₩ in Millions, $ in Millions	KRW (₩)	USD ($)
Exposure to Hedging Relationships Related to the Interest Rate Benchmark Reform [Line Items]
Description of Interest Rate Benchmark Reform	The USD LIBOR interest rate will be replaced by the Secured Overnight Financing Rate (“SOFR”) based on actual transactions. In the case of KRW, the Korean government bond/monetary stabilization bond RP rate has been finally decided as the Risk-Free Reference Rate (“RFR”) and will replace the Certificate of Deposit (“CD”) rate in the mid to long-term. Within the corresponding hedging relationship of related significant interest rate benchmark, the Group assumed that the spread to be changed on the RFR basis including SOFR would be similar to that included in the interest rate swap used as a hedging instrument, and no other changes were assumed.
KRW CD 3M
Exposure to Hedging Relationships Related to the Interest Rate Benchmark Reform [Line Items]
Description of Interest Rate Benchmark	CD#3M
Carrying Amount of Non-derivative Assets | ₩	₩ 3,123,388
Carrying Amount of Non-derivative Liabilities | ₩	2,470,123
Notional amount of hedging instruments | ₩	₩ 5,690,000
USD LIBOR 3M
Exposure to Hedging Relationships Related to the Interest Rate Benchmark Reform [Line Items]
Description of Interest Rate Benchmark	USD#LIBOR#3M
Carrying Amount of Non-derivative Assets		$ 2,695
Carrying Amount of Non-derivative Liabilities		2,829
Notional amount of hedging instruments		5,511
USD LIBOR 6M
Exposure to Hedging Relationships Related to the Interest Rate Benchmark Reform [Line Items]
Description of Interest Rate Benchmark	USD#LIBOR#6M
Carrying Amount of Non-derivative Assets		224
Carrying Amount of Non-derivative Liabilities		0
Notional amount of hedging instruments		$ 225

Loans Measured at Amortized C_3

Loans Measured at Amortized Cost - Summary of Loans (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Details Of Loans [Line Items]
Loans At Amortized Cost	₩ 417,900,273	$ 352,509,720	₩ 377,166,984
Loans measured at amortized cost
Details Of Loans [Line Items]
Loans At Amortized Cost	420,910,259		379,734,020
Deferred loan origination fees and costs
Details Of Loans [Line Items]
Loans At Amortized Cost	674,069		716,327
Allowances for credit losses
Details Of Loans [Line Items]
Loans At Amortized Cost	₩ (3,684,055)		₩ (3,283,363)

Loans Measured at Amortized C_4

Loans Measured at Amortized Cost - Summary of Loans for other Banks (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Details Of Loans Other Than Banks [Line Items]
Loans to banks	₩ 8,324,734	₩ 5,577,046
Loans measured at amortized cost
Details Of Loans Other Than Banks [Line Items]
Loans to banks	8,325,177	5,577,728
Allowances for credit losses
Details Of Loans Other Than Banks [Line Items]
Loans to banks	₩ (443)	₩ (682)

Loans Measured at Amortized C_5

Loans Measured at Amortized Cost - Summary of Loan Types and Customer Types of Loans to Customers other than Banks (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	₩ 409,575,539	₩ 371,589,938
Gross Carrying Amount [Member]
Details Of Loans Excluding In Other Than Banks [Line Items]
Proportions (%)	100.00%	100.00%
Loans Excluding In Other Than Banks	₩ 413,259,151	₩ 374,872,619
Gross Carrying Amount [Member] | Loans in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	346,954,285	317,874,938
Gross Carrying Amount [Member] | Loans in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	24,855,748	19,252,352
Gross Carrying Amount [Member] | Domestic import usance bills
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	3,311,142	2,152,059
Gross Carrying Amount [Member] | Off-shore funding loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	1,064,623	1,203,737
Gross Carrying Amount [Member] | Call loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	902,301	1,582,251
Gross Carrying Amount [Member] | Bills bought in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	2,209	1,620
Gross Carrying Amount [Member] | Bills bought in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	2,001,046	1,739,262
Gross Carrying Amount [Member] | Guarantee payments under acceptances and guarantees
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	20,780	8,021
Gross Carrying Amount [Member] | Credit card receivables in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	20,766,340	18,734,560
Gross Carrying Amount [Member] | Credit card receivables in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	57,980	63,071
Gross Carrying Amount [Member] | Bonds purchased under repurchase agreements
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	4,855,194	3,175,080
Gross Carrying Amount [Member] | Privately placed bonds
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	758,557	1,154,162
Gross Carrying Amount [Member] | Factored receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	571	107
Gross Carrying Amount [Member] | Lease receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	1,292,139	1,440,583
Gross Carrying Amount [Member] | Loans for installment credit
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	6,416,236	6,490,816
Allowances for credit losses
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	(3,683,612)	(3,282,681)
Retail
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	₩ 194,902,083	₩ 184,790,365
Retail | Gross Carrying Amount [Member]
Details Of Loans Excluding In Other Than Banks [Line Items]
Proportions (%)	47.40%	49.54%
Loans Excluding In Other Than Banks	₩ 195,907,078	₩ 185,700,453
Retail | Gross Carrying Amount [Member] | Loans in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	184,872,384	175,062,187
Retail | Gross Carrying Amount [Member] | Loans in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	3,990,253	3,092,630
Retail | Gross Carrying Amount [Member] | Domestic import usance bills
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Off-shore funding loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Call loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Bills bought in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Bills bought in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Guarantee payments under acceptances and guarantees
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	7	10
Retail | Gross Carrying Amount [Member] | Credit card receivables in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Credit card receivables in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Bonds purchased under repurchase agreements
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Privately placed bonds
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Retail | Gross Carrying Amount [Member] | Factored receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	113	104
Retail | Gross Carrying Amount [Member] | Lease receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	778,425	1,105,001
Retail | Gross Carrying Amount [Member] | Loans for installment credit
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	6,265,896	6,440,521
Retail | Allowances for credit losses
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	(1,004,995)	(910,088)
Corporate
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	₩ 194,641,280	₩ 168,703,437
Corporate | Gross Carrying Amount [Member]
Details Of Loans Excluding In Other Than Banks [Line Items]
Proportions (%)	47.56%	45.45%
Loans Excluding In Other Than Banks	₩ 196,527,753	₩ 170,374,535
Corporate | Gross Carrying Amount [Member] | Loans in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	162,081,901	142,812,751
Corporate | Gross Carrying Amount [Member] | Loans in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	20,865,495	16,159,722
Corporate | Gross Carrying Amount [Member] | Domestic import usance bills
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	3,311,142	2,152,059
Corporate | Gross Carrying Amount [Member] | Off-shore funding loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	1,064,623	1,203,737
Corporate | Gross Carrying Amount [Member] | Call loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	902,301	1,582,251
Corporate | Gross Carrying Amount [Member] | Bills bought in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	2,209	1,620
Corporate | Gross Carrying Amount [Member] | Bills bought in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	2,001,046	1,739,262
Corporate | Gross Carrying Amount [Member] | Guarantee payments under acceptances and guarantees
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	20,773	8,011
Corporate | Gross Carrying Amount [Member] | Credit card receivables in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Corporate | Gross Carrying Amount [Member] | Credit card receivables in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Corporate | Gross Carrying Amount [Member] | Bonds purchased under repurchase agreements
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	4,855,194	3,175,080
Corporate | Gross Carrying Amount [Member] | Privately placed bonds
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	758,557	1,154,162
Corporate | Gross Carrying Amount [Member] | Factored receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	458	3
Corporate | Gross Carrying Amount [Member] | Lease receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	513,714	335,582
Corporate | Gross Carrying Amount [Member] | Loans for installment credit
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	150,340	50,295
Corporate | Allowances for credit losses
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	(1,886,473)	(1,671,098)
Credit card
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	₩ 20,032,176	₩ 18,096,136
Credit card | Gross Carrying Amount [Member]
Details Of Loans Excluding In Other Than Banks [Line Items]
Proportions (%)	5.04%	5.01%
Loans Excluding In Other Than Banks	₩ 20,824,320	₩ 18,797,631
Credit card | Gross Carrying Amount [Member] | Loans in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Loans in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Domestic import usance bills
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Off-shore funding loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Call loans
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Bills bought in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Bills bought in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Guarantee payments under acceptances and guarantees
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Credit card receivables in Korean won
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	20,766,340	18,734,560
Credit card | Gross Carrying Amount [Member] | Credit card receivables in foreign currencies
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	57,980	63,071
Credit card | Gross Carrying Amount [Member] | Bonds purchased under repurchase agreements
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Privately placed bonds
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Factored receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Lease receivables
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Gross Carrying Amount [Member] | Loans for installment credit
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	0	0
Credit card | Allowances for credit losses
Details Of Loans Excluding In Other Than Banks [Line Items]
Loans Excluding In Other Than Banks	₩ (792,144)	₩ (701,495)

Loans Measured at Amortized C_6

Loans Measured at Amortized Cost - Summary of Changes in Deferred Loan Origination Fees and Costs (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Deferred Loan Origination Fees And Costs [Line Items]
Beginning		₩ 716,327	₩ 728,270
Increase		418,884	527,072
Decrease		(457,516)	(504,372)
Business combination			(38,741)
Others		(3,626)	4,098
Ending		674,069	716,327
Deferred loan origination costs
Deferred Loan Origination Fees And Costs [Line Items]
Beginning		769,547	741,683
Increase		463,460	555,389
Decrease		(488,404)	(536,901)
Business combination			9,376
Others		(4)	0
Ending		744,599	769,547
Deferred loan origination costs - Loans in Korean won
Deferred Loan Origination Fees And Costs [Line Items]
Beginning		673,957	645,305
Increase		418,732	502,044
Decrease		(424,785)	(473,392)
Business combination			0
Others		0	0
Ending		667,904	673,957
Deferred loan origination costs - Others
Deferred Loan Origination Fees And Costs [Line Items]
Beginning	[1]	95,590	96,378
Increase	[1]	44,728	53,345
Decrease	[1]	(63,619)	(63,509)
Business combination	[1]		9,376
Others	[1]	(4)	0
Ending	[1]	76,695	95,590
Deferred loan origination fees
Deferred Loan Origination Fees And Costs [Line Items]
Beginning		53,220	13,413
Increase		44,576	28,317
Decrease		(30,888)	(32,529)
Business combination			48,117
Others		3,622	(4,098)
Ending		70,530	53,220
Deferred loan origination fees - Loans in Korean won
Deferred Loan Origination Fees And Costs [Line Items]
Beginning		9,148	8,600
Increase		11,909	6,681
Decrease		(3,556)	(6,133)
Business combination			0
Others		0	0
Ending		17,501	9,148
Deferred loan origination fees - Others
Deferred Loan Origination Fees And Costs [Line Items]
Beginning	[2]	44,072	4,813
Increase	[2]	32,667	21,636
Decrease	[2]	(27,332)	(26,396)
Business combination	[2]		48,117
Others	[2]	3,622	(4,098)
Ending	[2]	₩ 53,029	₩ 44,072
[1]	Includes deferred loan origination costs related to credit card receivables, loans for installment credit, and finance lease receivables.
[2]	Includes deferred loan origination fees related to loans in foreign currencies executed by PT Bank KB Bukopin Tbk and PRASAC Microfinance Institution Plc.

Allowances for Credit Losses -

Allowances for Credit Losses - Summary of Changes in the Allowances for Loan Losses (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Provision (reversal) for credit losses		₩ 8,504		₩ 5,234		₩ (483)
Gain on recovery of loans and advances previously written off		387,860		379,179
Borrowings		9,945,130		10,566,603
12-month expected credit losses
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Allowance account for credit losses of financial assets		50,360		43,777
Lifetime expected credit losses
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Allowance account for credit losses of financial assets		53,490		29,861
Loans measured at amortized cost | Retail | 12-month expected credit losses
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		403,805	[1]	278,380
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		125,634		123,666
Transfer to lifetime expected credit losses		(97,040)		(91,410)
Impairment		(6,312)		(3,301)
Write-offs		0		0
Sales		(1,112)		(1,561)
Provision (reversal) for credit losses	[2],[3]	40,616		49,459
Business combination		8,315		50,664
Others (exchange differences, etc.)		77		(2,092)
Ending		473,983	[1]	403,805	[1]	278,380
Loans measured at amortized cost | Retail | Non-impaired
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		240,578	[1]	224,905
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		(120,132)		(121,970)
Transfer to lifetime expected credit losses		115,427		182,076
Impairment		(49,244)		(131,852)
Write-offs				(5)
Recoveries from written off loans		12
Sales		(53)		(99)
Provision (reversal) for credit losses	[2],[3]	52,528		78,413
Business combination		2,223		9,545
Others (exchange differences, etc.)		532		(435)
Ending		241,871	[1]	240,578	[1]	224,905
Loans measured at amortized cost | Retail | Impaired
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		265,705	[1]	208,037
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		(5,502)		(1,696)
Transfer to lifetime expected credit losses		(18,387)		(90,666)
Impairment		55,556		135,153
Write-offs		(411,083)		(460,734)
Sales		(3,592)		(1,131)
Provision (reversal) for credit losses	[2],[3]	397,492		428,220
Business combination		7,194		53,532
Others (exchange differences, etc.)		1,758		(5,010)
Ending		289,141	[1]	265,705	[1]	208,037
Loans measured at amortized cost | Corporate | 12-month expected credit losses
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		368,782	[1]	215,069
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		133,798		119,723
Transfer to lifetime expected credit losses		(71,902)		(56,655)
Impairment		(2,942)		(3,365)
Write-offs		0		0
Sales		(179)		(8)
Provision (reversal) for credit losses	[2],[3]	14,299		(2,059)
Business combination		0		99,824
Others (exchange differences, etc.)		5,942		(3,747)
Ending		447,798	[1]	368,782	[1]	215,069
Loans measured at amortized cost | Corporate | Non-impaired
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		410,937	[1]	290,310
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		(71,772)		(111,708)
Transfer to lifetime expected credit losses		92,245		146,690
Impairment		(42,158)		(48,773)
Write-offs		(3)		(1)
Sales		0		0
Provision (reversal) for credit losses	[2],[3]	88,230		113,335
Business combination		0		24,303
Others (exchange differences, etc.)		675		(3,219)
Ending		478,154	[1]	410,937	[1]	290,310
Loans measured at amortized cost | Corporate | Impaired
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		892,061	[1]	451,607
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		(62,026)		(8,015)
Transfer to lifetime expected credit losses		(20,343)		(90,035)
Impairment		45,100		52,138
Write-offs		(239,815)		(321,583)
Sales		(16,257)		(21,069)
Provision (reversal) for credit losses	[2],[3]	338,746		180,162
Business combination		1,654		668,426
Others (exchange differences, etc.)		21,844		(19,570)
Ending		960,964	[1]	892,061	[1]	451,607
Loans measured at amortized cost | Credit card | 12-month expected credit losses
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		205,157	[1]	209,651
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		45,938		48,959
Transfer to lifetime expected credit losses		(34,208)		(25,227)
Impairment		(2,228)		(2,273)
Write-offs		0		0
Sales		0		0
Provision (reversal) for credit losses	[2],[3]	(39,533)		(26,042)
Business combination		0		89
Others (exchange differences, etc.)		42		0
Ending		175,168	[1]	205,157	[1]	209,651
Loans measured at amortized cost | Credit card | Non-impaired
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		234,219	[1]	266,183
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		(44,858)		(47,611)
Transfer to lifetime expected credit losses		35,846		26,379
Impairment		(12,580)		(13,657)
Write-offs		0		0
Sales		0		0
Provision (reversal) for credit losses	[2],[3]	110,022		2,925
Business combination		0		0
Others (exchange differences, etc.)		0		0
Ending		322,649	[1]	234,219	[1]	266,183
Loans measured at amortized cost | Credit card | Impaired
Disclosure Of Changes In The Allowance Account For Credit Losses Of Loans [Line Items]
Beginning		262,119	[1]	263,874
Changes In Allowance Account For Credit Losses Of Loans [Abstract]
Transfer to 12-month expected credit losses		(1,080)		(1,348)
Transfer to lifetime expected credit losses		(1,638)		(1,152)
Impairment		14,808		15,930
Write-offs		(440,721)		(502,275)
Sales		0		0
Provision (reversal) for credit losses	[2],[3]	474,041		496,162
Business combination		0		4,409
Others (exchange differences, etc.)		(13,202)		(13,481)
Ending		₩ 294,327	[1]	₩ 262,119	[1]	₩ 263,874
[1]	Includes additional allowances of ￦ 43,777 million and ￦ 50,360 million for industries and borrowers which are highly affected by COVID-19 and ￦ 29,861 million and ￦ 53,490 million due to expanding the scope of the loans subject to lifetime expected credit losses (non-impaired) as of December 31, 2020 and 2021, respectively. Includes additional allowances of ￦ 23,325 million due to expanding the scope of the loans subject to individual assessment as of December 31, 2020.
[2]	Includes ￦ 379,179 million and ￦ 387,860 million of collections from written-off loans for the years ended December 31, 2020 and 2021, respectively.
[3]	Provision for credit losses in the consolidated statements of comprehensive income also includes provision (reversal) for credit losses of due from financial institutions (Note 7.3), provision (reversal) for credit losses of financial investments (Note 12.5), provision (reversal) for credit losses of unused commitments, acceptances and guarantees (Note 24.2), provision (reversal) for credit losses of financial guarantee contracts (Note 24.3), and provision (reversal) for credit losses of other financial assets (Note 19.2).

Allowances for Credit Losses _2

Allowances for Credit Losses - Summary of Changes in the Book Value of Loans at Amortized Cost (Details) - Loans measured at amortized cost - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
12-month expected credit losses
Disclosure Of Changes In The Book Value Of Loans At Amortized Cost [Line Items]
Beginning	₩ 348,518,780	₩ 316,377,009
Changes In The Book Value Of Loans At Amortized Cost [Abstract]
Transfer to 12-month expected credit losses	31,046,440	26,751,021
Transfer to lifetime expected credit losses (non-impaired)	(36,815,970)	(33,475,491)
Transfer to lifetime expected credit losses (impaired)	(668,120)	(596,861)
Sales	(2,892,774)	(4,324,146)
Write-offs	0	0
Business combination	116,067	7,029,580
Net increase (decrease) (execution, repayment, and others)	46,013,068	36,757,668
Ending	385,317,491	348,518,780
Lifetime expected credit losses - Non-impaired
Disclosure Of Changes In The Book Value Of Loans At Amortized Cost [Line Items]
Beginning	28,504,202	23,814,108
Changes In The Book Value Of Loans At Amortized Cost [Abstract]
Transfer to 12-month expected credit losses	(30,615,747)	(26,629,210)
Transfer to lifetime expected credit losses (non-impaired)	37,276,737	34,603,648
Transfer to lifetime expected credit losses (impaired)	(1,486,835)	(2,287,196)
Sales	(8,541)	(20,907)
Write-offs	9	(6)
Business combination	3,924	570,710
Net increase (decrease) (execution, repayment, and others)	(895,012)	(1,546,945)
Ending	32,778,737	28,504,202
Lifetime expected credit losses - Impaired
Disclosure Of Changes In The Book Value Of Loans At Amortized Cost [Line Items]
Beginning	3,427,365	1,900,958
Changes In The Book Value Of Loans At Amortized Cost [Abstract]
Transfer to 12-month expected credit losses	(430,693)	(121,811)
Transfer to lifetime expected credit losses (non-impaired)	(460,767)	(1,128,157)
Transfer to lifetime expected credit losses (impaired)	2,154,955	2,884,057
Sales	(151,714)	(200,182)
Write-offs	(1,091,619)	(1,284,592)
Business combination	12,808	1,711,823
Net increase (decrease) (execution, repayment, and others)	27,765	(334,731)
Ending	₩ 3,488,100	₩ 3,427,365

Financial Assets at Fair Valu_3

Financial Assets at Fair Value through Profit or Loss and Financial Investments - Summary of Financial Assets at Fair Value Through Profit or Loss and Financial Investments (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	₩ 66,005,815	$ 55,677,617	₩ 61,035,455
Financial Investments [Abstract]
Financial investments	104,847,871	$ 88,441,899	98,695,426
Financial assets at fair value through profit or loss
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	66,005,815		61,035,455
Financial assets at fair value through profit or loss | Government and public bonds
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	8,294,084		9,315,317
Financial assets at fair value through profit or loss | Financial bonds
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	16,887,594		17,897,348
Financial assets at fair value through profit or loss | Corporate bonds
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	5,433,010		3,997,753
Financial assets at fair value through profit or loss | Asset-backed securities
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	197,865		236,130
Financial assets at fair value through profit or loss | Beneficiary certificates
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	15,849,129		14,200,802
Financial assets at fair value through profit or loss | Derivatives linked securities
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	1,543,188		2,218,502
Financial assets at fair value through profit or loss | Other debt securities
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	14,797,822		10,549,248
Financial assets at fair value through profit or loss | Other due from financial institutions
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	200,742		100,094
Financial assets at fair value through profit or loss | Others
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	113,622		89,965
Financial assets at fair value through profit or loss | Stocks
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	1,804,507		1,632,619
Financial assets at fair value through profit or loss | Other equity securities
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	614,956		459,694
Financial assets at fair value through profit or loss | Privately placed bonds
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	230,006		212,021
Financial assets at fair value through profit or loss | Other loans
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	39,290		125,962
Financial assets at fair value through other comprehensive income
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	60,376,243		61,825,197
Financial assets at fair value through other comprehensive income | Government and public bonds
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	14,317,477		14,735,340
Financial assets at fair value through other comprehensive income | Financial bonds
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	21,928,735		23,194,387
Financial assets at fair value through other comprehensive income | Corporate bonds
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	18,986,005		18,721,327
Financial assets at fair value through other comprehensive income | Asset-backed securities
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	996,428		1,795,840
Financial assets at fair value through other comprehensive income | Other debt securities
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	30,866		9,995
Financial assets at fair value through other comprehensive income | Stocks
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	3,588,415		2,852,158
Financial assets at fair value through other comprehensive income | Equity investments
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	27,211		37,602
Financial assets at fair value through other comprehensive income | Other equity securities
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	187,502		185,139
Financial assets at fair value through other comprehensive income | Privately placed bonds
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	299,634		265,426
Financial assets at fair value through other comprehensive income | Other loans
Financial Investments [Abstract]
Financial assets at fair value through other comprehensive income	13,970		27,983
Financial assets at amortized cost
Financial Investments [Abstract]
Financial assets at amortized cost	44,471,628		36,870,229
Financial assets at amortized cost | Government and public bonds
Financial Investments [Abstract]
Financial assets at amortized cost	21,447,622		17,193,289
Financial assets at amortized cost | Financial bonds
Financial Investments [Abstract]
Financial assets at amortized cost	3,850,954		5,678,949
Financial assets at amortized cost | Corporate bonds
Financial Investments [Abstract]
Financial assets at amortized cost	12,246,441		8,181,961
Financial assets at amortized cost | Asset-backed securities
Financial Investments [Abstract]
Financial assets at amortized cost	6,899,675		5,788,587
Financial assets at amortized cost | Other debt securities
Financial Investments [Abstract]
Financial assets at amortized cost	31,105		30,392
Financial assets at amortized cost | Allowances for credit losses
Financial Investments [Abstract]
Financial assets at amortized cost	₩ (4,169)		₩ (2,949)

Financial Assets at Fair Valu_4

Financial Assets at Fair Value through Profit or Loss and Financial Investments - Summary of Dividend Incomes from the Equity Securities (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
From the equity securities derecognized	₩ 7,478	₩ 7,000
From the remaining equity securities	26,326	38,124
Listed
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
From the equity securities derecognized	7,106	7,000
From the remaining equity securities	300	11,843
Unlisted
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
From the equity securities derecognized	372	0
From the remaining equity securities	19,035	22,241
Equity investments
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
From the equity securities derecognized	0	0
From the remaining equity securities	114	285
Other equity securities
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
From the equity securities derecognized	0	0
From the remaining equity securities	₩ 6,877	₩ 3,755

Financial Assets at Fair Valu_5

Financial Assets at Fair Value through Profit or Loss and Financial Investments - Summary of Derecognized Equity Securities Measured at Fair Value Through Other Comprehensive Income (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Disposal price	₩ 580,865	₩ 516,899
Accumulated other comprehensive income as of disposal date	(308,868)	326,410
Listed
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Disposal price	575,288	516,883
Accumulated other comprehensive income as of disposal date	(313,427)	326,394
Unlisted
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Disposal price	5,577	13
Accumulated other comprehensive income as of disposal date	4,559	13
Equity investments
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Disposal price	0	3
Accumulated other comprehensive income as of disposal date	₩ 0	₩ 3

Financial Assets at Fair Valu_6

Financial Assets at Fair Value through Profit or Loss and Financial Investments - Summary of Provision and Reversal for the Allowance of Financial Investments (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Provision And Reversal For The Allowance Of Financial Investments [Line Items]
Provision	₩ 9,595	₩ 6,415	₩ 1,923
Reversal	(1,091)	(1,181)	(2,406)
Total	8,504	5,234	(483)
Securities measured at fair value through other comprehensive income
Disclosure Of Provision And Reversal For The Allowance Of Financial Investments [Line Items]
Provision	7,466	4,297	1,537
Reversal	(385)	(229)	(1,144)
Total	7,081	4,068	393
Loans measured at fair value through other comprehensive income
Disclosure Of Provision And Reversal For The Allowance Of Financial Investments [Line Items]
Provision	237	202	170
Reversal	(15)	(316)	(982)
Total	222	(114)	(812)
Securities measured at amortized cost
Disclosure Of Provision And Reversal For The Allowance Of Financial Investments [Line Items]
Provision	1,892	1,916	216
Reversal	(691)	(636)	(280)
Total	₩ 1,201	₩ 1,280	₩ (64)

Financial Assets at Fair Valu_7

Financial Assets at Fair Value through Profit or Loss and Financial Investments - Summary of Changes in the Allowances for Credit Losses of Financial Investments (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes In The Allowances For Credit Losses Of Financial Investments [Abstract]
Provision (reversal) for credit losses	₩ 8,504	₩ 5,234	₩ (483)
Financial assets at fair value through profit or loss and financial investments | Non-impaired
Disclosure Of Changes In The Allowances For Credit Losses Of Financial Investments [Line Items]
Beginning	39	0
Changes In The Allowances For Credit Losses Of Financial Investments [Abstract]
Transfer to 12-month expected credit losses	0	0
Transfer to lifetime expected credit losses	0	0
Sales	(4)	0
Provision (reversal) for credit losses	(11)	39
Others	4	0
Ending	28	39	0
Financial assets at fair value through profit or loss and financial investments | 12-month expected credit losses
Disclosure Of Changes In The Allowances For Credit Losses Of Financial Investments [Line Items]
Beginning	9,908	5,370
Changes In The Allowances For Credit Losses Of Financial Investments [Abstract]
Transfer to 12-month expected credit losses	0	0
Transfer to lifetime expected credit losses	0	0
Sales	(1,568)	(589)
Provision (reversal) for credit losses	8,512	5,195
Others	(32)	(68)
Ending	16,820	9,908	5,370
Financial assets at fair value through profit or loss and financial investments | Impaired
Disclosure Of Changes In The Allowances For Credit Losses Of Financial Investments [Line Items]
Beginning	73	0
Changes In The Allowances For Credit Losses Of Financial Investments [Abstract]
Transfer to 12-month expected credit losses	0	0
Transfer to lifetime expected credit losses	0	0
Sales	0	0
Provision (reversal) for credit losses	3	0
Others	0	73
Ending	₩ 76	₩ 73	₩ 0

Investments in Associates and_3

Investments in Associates and Joint Ventures - Summary of Investments in Associates and Joint Ventures (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)		Dec. 31, 2020KRW (₩)		Dec. 31, 2021USD ($)	Dec. 31, 2019KRW (₩)
Disclosure of associates and joint ventures [Line Items]
Acquistion cost		₩ 598,590		₩ 737,672
Share of net asset amount		410,457		757,297
Carrying amount		₩ 448,718	[1]	₩ 771,435	[1]	$ 378,505	₩ 598,240	[1]
KB Pre IPO Secondary Venture Fund No.1
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	15.19%		15.19%
Acquistion cost	[2]	₩ 259		₩ 551
Share of net asset amount	[2],[3]	1,622		1,279
Carrying amount	[1]	₩ 1,622	[2],[3]	₩ 1,279	[2],[3]		1,705
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
KB GwS Private Securities Investment Trust
Disclosure of associates and joint ventures [Line Items]
Ownership (%)				26.74%
Acquistion cost				₩ 113,880
Share of net asset amount	[3]			142,799
Carrying amount	[1]	₩ 0		₩ 141,359	[3]		136,168
Industry				Investment finance
Location				Korea
KB-KDBC Pre-IPO New Technology Business Investment Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	66.66%		66.66%
Acquistion cost	[4]	₩ 8,801		₩ 13,601
Share of net asset amount	[3],[4]	11,789		16,042
Carrying amount	[1]	₩ 11,789	[3],[4]	₩ 16,042	[3],[4]		18,988
Industry	[4]	Investment finance		Investment finance
Location	[4]	Korea		Korea
Balhae Infrastructure Company
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	12.61%		12.61%
Acquistion cost	[2]	₩ 105,924		₩ 106,107
Share of net asset amount	[2],[3]	99,785		106,624
Carrying amount	[1]	₩ 99,785	[2],[3]	₩ 106,624	[2],[3]		101,391
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
Aju Good Technology Venture Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		38.46%		38.46%
Acquistion cost		₩ 12,343		₩ 17,113
Share of net asset amount	[3]	22,921		21,351
Carrying amount	[1]	₩ 22,921	[3]	₩ 21,348	[3]		23,016
Industry		Investment finance		Investment finance
Location		Korea		Korea
SY Auto Capital Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		49.00%		49.00%
Acquistion cost		₩ 9,800		₩ 9,800
Share of net asset amount	[3]	19,835		18,713
Carrying amount	[1]	₩ 18,222	[3]	₩ 16,144	[3]		12,725
Industry		Auto loans		Auto loans
Location		Korea		Korea
Incheon Bridge Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	14.99%		14.99%
Acquistion cost	[2]	₩ 9,158		₩ 9,158
Share of net asset amount	[2],[3]	(19,481)		(18,100)
Carrying amount	[1]	₩ 0	[2],[3]	₩ 0	[2],[3]		0
Industry	[2]	Operation of highways and related facilities		Operation of highways and related facilities
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
Big Dipper Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		25.14%		25.14%
Acquistion cost		₩ 440		₩ 440
Share of net asset amount	[3]	(147)		(5)
Carrying amount	[1]	₩ 0	[3]	₩ 0	[3]		125
Industry		Research, consulting, and big data		Research, consulting, and big data
Location		Korea		Korea
Paycoms Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[5]	11.05%		11.70%
Acquistion cost	[5]	₩ 800		₩ 800
Share of net asset amount	[3],[5]	181		72
Carrying amount	[1]	₩ 525	[3],[5]	₩ 198	[3],[5]		45
Industry	[5]	System software publishing		System software publishing
Location	[5]	Korea		Korea
Description of nature of entitys relationship with associate		The ownership of Paycoms Co., Ltd. would be 22.96% and 21.84% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.		The ownership of Paycoms Co., Ltd. would be 22.96% and 21.84% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
Food Factory Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[6]	22.22%		22.22%
Acquistion cost	[6]	₩ 1,000		₩ 1,000
Share of net asset amount	[3],[6]	633		632
Carrying amount	[1]	₩ 1,320	[3],[6]	₩ 1,281	[3],[6]		1,000
Industry	[6]	Farm product distribution		Farm product distribution
Location	[6]	Korea		Korea
Description of nature of entitys relationship with associate		The ownership of Food Factory Co., Ltd. would be 30.00% and 30.00% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.		The ownership of Food Factory Co., Ltd. would be 30.00% and 30.00% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
KBSP Private Equity Fund No.4
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	14.95%		14.95%
Acquistion cost	[2]	₩ 6,100		₩ 6,100
Share of net asset amount	[2],[3]	5,628		5,950
Carrying amount	[1]	₩ 5,628	[2],[3]	₩ 5,950	[2],[3]		5,904
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
KB Private Equity Fund No.3
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]			15.69%
Acquistion cost	[2]			₩ 0
Share of net asset amount	[2],[3]			94
Carrying amount	[1]	₩ 0		₩ 94	[2],[3]		7,754
Industry	[2]			Investment finance
Location	[2]			Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
Korea Credit Bureau Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	9.00%		9.00%
Acquistion cost	[2]	₩ 4,500		₩ 4,500
Share of net asset amount	[2],[3]	4,497		7,153
Carrying amount	[1]	₩ 4,497	[2],[3]	₩ 7,153	[2],[3]		5,991
Industry	[2]	Credit information		Credit information
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
KoFC POSCO HANWHA KB Shared Growth Private Equity Fund No. 2
Disclosure of associates and joint ventures [Line Items]
Ownership (%)				25.00%
Acquistion cost				₩ 9,739
Share of net asset amount	[3]			9,845
Carrying amount	[1]	₩ 0		₩ 9,845	[3]		13,616
Industry				Investment finance
Location				Korea
Keystone-Hyundai Securities No. 1 Private Equity Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]			4.49%
Acquistion cost	[2]			₩ 1,908
Share of net asset amount	[2],[3]			1,556
Carrying amount	[1]	₩ 0		₩ 1,556	[2],[3]		1,625
Industry	[2]			Investment finance
Location	[2]			Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
KB-Solidus Global Healthcare Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	43.33%		43.33%
Acquistion cost	[4]	₩ 45,557		₩ 48,677
Share of net asset amount	[3],[4]	48,201		45,516
Carrying amount	[1]	₩ 48,898	[3],[4]	₩ 46,213	[3],[4]		45,718
Industry	[4]	Investment finance		Investment finance
Location	[4]	Korea		Korea
POSCO-KB Shipbuilding Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		31.25%		31.25%
Acquistion cost		₩ 2,776		₩ 10,375
Share of net asset amount	[3]	5,413		12,895
Carrying amount	[1]	₩ 5,413	[3]	₩ 12,895	[3]		6,847
Industry		Investment finance		Investment finance
Location		Korea		Korea
KB-TS Technology Venture Private Equity Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	56.00%		56.00%
Acquistion cost	[4]	₩ 14,280		₩ 16,576
Share of net asset amount	[3],[4]	16,828		17,630
Carrying amount	[1]	₩ 16,828	[3],[4]	₩ 17,630	[3],[4]		19,731
Industry	[4]	Investment finance		Investment finance
Location	[4]	Korea		Korea
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	42.55%		42.55%
Acquistion cost	[4]	₩ 25,250		₩ 26,050
Share of net asset amount	[3],[4]	29,669		27,513
Carrying amount	[1]	₩ 28,919	[3],[4]	₩ 26,763	[3],[4]		19,752
Industry	[4]	Investment finance		Investment finance
Location	[4]	Korea		Korea
KB-SJ Tourism Venture Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	18.52%		18.52%
Acquistion cost	[2]	₩ 4,999		₩ 4,500
Share of net asset amount	[2],[3]	4,146		4,133
Carrying amount	[1]	₩ 4,146	[2],[3]	₩ 4,133	[2],[3]		2,761
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
UNION Media Commerce Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		28.99%		28.99%
Acquistion cost		₩ 1,000		₩ 1,000
Share of net asset amount	[3]	959		960
Carrying amount	[1]	₩ 959	[3]	₩ 960	[3]		961
Industry		Investment finance		Investment
Location		Korea		Korea
KB-Stonebridge Secondary Private Equity Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	14.56%		14.56%
Acquistion cost	[2]	₩ 21,641		₩ 14,308
Share of net asset amount	[2],[3]	21,948		16,636
Carrying amount	[1]	₩ 21,948	[2],[3]	₩ 16,636	[2],[3]		4,944
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
KB SPROTT Renewable Private Equity Fund No.1
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	37.69%		37.69%
Acquistion cost	[4]	₩ 5,795		₩ 5,795
Share of net asset amount	[3],[4]	4,680		5,049
Carrying amount	[1]	₩ 4,680	[3],[4]	₩ 5,049	[3],[4]		1,295
Industry	[4]	Investment finance		Investment finance
Location	[4]	Korea		Korea
KB-UTC Inno-Tech Venture Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	44.29%		44.29%
Acquistion cost	[4]	₩ 21,375		₩ 17,416
Share of net asset amount	[3],[4]	20,972		16,999
Carrying amount	[1]	₩ 20,972	[3],[4]	₩ 16,999	[3],[4]		417
Industry	[4]	Investment finance		Investment finance
Location	[4]	Korea		Korea
WJ Private Equity Fund No.1
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		26.95%		26.95%
Acquistion cost		₩ 10,000		₩ 10,000
Share of net asset amount	[3]	9,604		9,711
Carrying amount	[1]	₩ 9,604	[3]	₩ 9,711	[3]		0
Industry		Investment finance		Investment finance
Location		Korea		Korea
All Together Korea Fund No.2
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[7]	99.99%		99.99%
Acquistion cost	[7]	₩ 10,000		₩ 10,000
Share of net asset amount	[3],[7]	10,070		10,023
Carrying amount	[1]	₩ 10,070	[3],[7]	₩ 10,023	[3],[7]		0
Industry	[7]	Asset management		Asset management
Location	[7]	Korea		Korea
KB-NAU Special Situation Corporate Restructuring Private Equity Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	12.00%		12.00%
Acquistion cost	[2]	₩ 13,392		₩ 5,700
Share of net asset amount	[2],[3]	15,254		5,611
Carrying amount	[1]	₩ 15,254	[2],[3]	₩ 5,611	[2],[3]		0
Industry	[2]	Asset management		Asset management
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
JR GLOBAL REIT
Disclosure of associates and joint ventures [Line Items]
Ownership (%)				26.07%
Acquistion cost				₩ 215,854
Share of net asset amount	[3]			215,854
Carrying amount	[1]	₩ 0		₩ 215,854	[3]		0
Industry				Real estate management
Location				Korea
Project Vanilla Co., Ltd.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		49.00%		49.00%
Acquistion cost		₩ 2,450		₩ 2,450
Share of net asset amount	[3]	525		2,151
Carrying amount	[1]	₩ 525	[3]	₩ 2,151	[3]		0
Industry		Investment finance		Investment finance
Location		Korea		Korea
December & Company Inc.
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	16.78%		17.63%
Acquistion cost	[2]	₩ 25,330		₩ 24,849
Share of net asset amount	[2],[3]	9,054		24,402
Carrying amount	[1]	₩ 21,388	[2],[3]	₩ 24,402	[2],[3]		0
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
2020 KB Fintech Renaissance Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	5.05%		5.05%
Acquistion cost	[2]	₩ 550		₩ 550
Share of net asset amount	[2],[3]	618		547
Carrying amount	[1]	₩ 618	[2],[3]	₩ 547	[2],[3]		0
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
KB Material and Parts No.1 PEF
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	14.47%		14.47%
Acquistion cost	[2]	₩ 3,400		₩ 3,400
Share of net asset amount	[2],[3]	3,343		3,371
Carrying amount	[1]	₩ 3,343	[2],[3]	₩ 3,371	[2],[3]		0
Industry	[2]	Investment finance		Investment finance
Location	[2]	Korea		Korea
Description of nature of entitys relationship with associate		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.		As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
FineKB Private Equity Fund No.1
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		25.00%		25.00%
Acquistion cost		₩ 8,375		₩ 0
Share of net asset amount	[3]	8,067		0
Carrying amount	[1]	₩ 8,067	[3]	₩ 0	[3]		0
Industry		Investment finance		Investment finance
Location		Korea	[2]	Korea
KB Bio Private Equity No.3 Ltd. [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[2]	12.20%
Acquistion cost	[2]	₩ 10,000
Share of net asset amount	[2],[3]	9,950
Carrying amount	[1]	₩ 9,950	[2],[3]	₩ 0
Industry	[2]	Investment finance
Location	[2]	Korea
G Payment Joint Stock Company [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		43.84%
Acquistion cost		₩ 9,029
Share of net asset amount	[3]	3,175
Carrying amount	[1]	₩ 9,350	[3]	0
Industry		Investment advisory and securities trading
Location		Vietnam
Four Ninety Eight Seventh Owners L L C 3 [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[8]	49.90%
Acquistion cost	[8]	₩ 166,851
Share of net asset amount	[8]	0
Carrying amount	[1],[8]	₩ 0		0
Industry	[8]	Real estate investment
Location	[8]	United States
Smart Korea KB Future9Sejong Venture Fund [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		38.46%
Acquistion cost		₩ 1,000
Share of net asset amount	[3]	962
Carrying amount	[1]	₩ 962	[3]	0
Industry		Investment finance
Location		Korea
KBKTB Technology Venture Fund [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	50.50%
Acquistion cost	[4]	₩ 5,600
Share of net asset amount	[3],[4]	5,503
Carrying amount	[1]	₩ 5,554	[3],[4]	0
Industry	[4]	Investment finance
Location	[4]	Korea
KBSOLIDUS Healthcare Investment Fund [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)	[4]	88.23%
Acquistion cost	[4]	₩ 1,800
Share of net asset amount	[3],[4]	1,800
Carrying amount	[1]	₩ 1,800	[3],[4]	0
Industry	[4]	Investment finance
Location	[4]	Korea
Paramark KB Fund No.1 [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		20.69%
Acquistion cost		₩ 2,040
Share of net asset amount	[3]	1,850
Carrying amount	[1]	₩ 1,850	[3]	0
Industry		Investment finance
Location		Korea
Others
Disclosure of associates and joint ventures [Line Items]
Acquistion cost		₩ 2,475		2,475
Share of net asset amount		81		1,004
Carrying amount	[1]	₩ 789		₩ 674			23,076
KB Social Impact Investment Fund
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		30.00%		30.00%
Acquistion cost		₩ 4,500		₩ 3,000
Share of net asset amount	[3]	4,282		2,874
Carrying amount	[3]	₩ 4,282		₩ 2,874
Industry		Investment finance		Investment finance
Location		Korea		Korea
KB Star Office Private Real Estate Master Fund No.1 [Member]
Disclosure of associates and joint ventures [Line Items]
Ownership (%)		21.05%		21.05%
Acquistion cost		₩ 20,000		₩ 20,000
Share of net asset amount	[3]	26,240		20,413
Carrying amount	[1]	₩ 26,240	[3]	₩ 20,066	[3]		₩ 19,839
Industry		Investment finance		Investment finance
Location		Korea		Korea
[1]	Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million for the years ended December 31, 2020 and 2021, respectively.
[2]	As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
[3]	The condensed financial information of the associates and joint ventures is adjusted to reflect adjustments, such as fair value adjustments recognized at the time of acquisition and adjustments for differences in accounting policies.
[4]	In order to direct relevant activities, it is necessary to obtain the consent of the two co-operative members; the Group has applied the equity method as the Group cannot control the investee by itself.
[5]	The ownership of Paycoms Co., Ltd. would be 22.96% and 21.84% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
[6]	The ownership of Food Factory Co., Ltd. would be 30.00% and 30.00% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
[7]	As of December 31, 2020 and 2021, the Group participates in the investment management committee but cannot exercise control.
[8]	The investment was classified as assets of a disposal group held for sale as of December 31, 2021.

Investments in Associates and_4

Investments in Associates and Joint Ventures - Summary of Financial Information on Major Associates and Joint Ventures Adjustments to Carrying Amount of Investment in Associates and Dividends Received (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)		Dec. 31, 2020KRW (₩)		Dec. 31, 2021USD ($)	Dec. 31, 2019KRW (₩)
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Share of net asset amount		₩ 410,457		₩ 757,297
Carrying amount		448,718	[1]	771,435	[1]	$ 378,505	₩ 598,240	[1]
Dividends	[1]	32,903		18,669
KB Pre IPO Secondary Venture Fund No.1
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	10,678		8,423
Total liabilities	[2]	3		3
Share capital	[2]	4,015		5,940
Equity	[2]	10,675		8,420
Share of net asset amount	[2],[3]	1,622		1,279
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	1,622	[2],[3]	1,279	[2],[3]		1,705
Operating income	[2]	4,594		1,942
Profit (Loss)	[2]	4,180		1,053
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	4,180		1,053
Dividends	[1],[2]	0		0
KB GwS Private Securities Investment Trust
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]			534,764
Total liabilities	[2]			741
Share capital	[2]			425,814
Equity	[2]			534,023
Share of net asset amount	[2]			142,799
Unrealized gains (losses)	[2]			(1,440)
Carrying amount	[1]	0		141,359	[2]		136,168
Operating income	[2]			48,501
Profit (Loss)	[2]			47,520
Other comprehensive income	[2]			0
Total comprehensive income	[2]			47,520
Dividends	[1]	0		9,525	[2]
Balhae Infrastructure Company
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	853,961		847,758
Total liabilities	[2]	62,336		1,870
Share capital	[2]	840,323		841,784
Equity	[2]	791,625		845,888
Share of net asset amount	[2],[3]	99,785		106,624
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	99,785	[2],[3]	106,624	[2],[3]		101,391
Operating income	[2]	97,833		63,781
Profit (Loss)	[2]	19,559		89,757
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	19,559		89,757
Dividends	[1],[2]	9,121		6,973
Aju Good Technology Venture Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	64,303		57,776
Total liabilities	[2]	4,703		2,265
Share capital	[2]	32,100		44,500
Equity	[2]	59,600		55,511
Share of net asset amount	[2]	22,921		21,351
Unrealized gains (losses)	[2]	0		(3)
Carrying amount	[1]	22,921	[2]	21,348	[2]		23,016
Operating income	[2]	22,486		8,685
Profit (Loss)	[2]	15,407		2,815
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	15,407		2,815
Dividends	[1],[2]	0		0
SY Auto Capital Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	88,144		89,462
Total liabilities	[2]	47,665		51,272
Share capital	[2]	20,000		20,000
Equity	[2]	40,479		38,190
Share of net asset amount	[2]	19,835		18,713
Unrealized gains (losses)	[2]	(1,613)		(2,569)
Carrying amount	[1]	18,222	[2]	16,144	[2]		12,725
Operating income	[2]	14,316		17,404
Profit (Loss)	[2]	2,193		2,057
Other comprehensive income	[2]	104		(49)
Total comprehensive income	[2]	2,297		2,008
Dividends	[1],[2]	0		0
Incheon Bridge Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	560,570		579,386
Total liabilities	[2]	690,530		700,133
Share capital	[2]	61,096		61,096
Equity	[2]	(129,960)		(120,747)
Share of net asset amount	[2],[3]	(19,481)		(18,100)
Unrealized gains (losses)	[2]	19,481		18,100
Carrying amount	[1]	0	[2],[3]	0	[2],[3]		0
Operating income	[2]	84,068		70,345
Profit (Loss)	[2]	(16,219)		(23,200)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(16,219)		(23,200)
Dividends	[1],[2]	0		0
Big Dipper Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	143		285
Total liabilities	[2]	748		306
Share capital	[2]	1,750		1,750
Equity	[2]	(605)		(21)
Share of net asset amount	[2]	(147)		(5)
Unrealized gains (losses)	[2]	147		5
Carrying amount	[1]	0	[2]	0	[2]		125
Operating income	[2]	939		942
Profit (Loss)	[2]	(583)		(305)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(583)		(305)
Dividends	[1],[2]	0		0
Paycoms Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	3,597		2,690
Total liabilities	[2]	1,960		2,073
Share capital	[2]	855		855
Equity	[2]	1,637		617
Share of net asset amount	[2],[4]	181		72
Unrealized gains (losses)	[2]	344		126
Carrying amount	[1]	525	[2],[4]	198	[2],[4]		45
Operating income	[2]	1,515		1,391
Profit (Loss)	[2]	857		505
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	857		505
Dividends	[1],[2]	0		0
Food Factory Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	8,332		7,613
Total liabilities	[2]	5,482		4,767
Share capital	[2]	450		450
Equity	[2]	2,850		2,846
Share of net asset amount	[2],[5]	633		632
Unrealized gains (losses)	[2]	687		649
Carrying amount	[1]	1,320	[2],[5]	1,281	[2],[5]		1,000
Operating income	[2]	8,853		9,282
Profit (Loss)	[2]	354		407
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	354		407
Dividends	[1],[2]	0		0
KB Private Equity Fund No.3
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]			1,132
Total liabilities	[2]			533
Share capital	[2]			0
Equity	[2]			599
Share of net asset amount	[2],[3]			94
Unrealized gains (losses)	[2]			0
Carrying amount	[1]	0		94	[2],[3]		7,754
Operating income	[2]			0
Profit (Loss)	[2]			15,442
Other comprehensive income	[2]			0
Total comprehensive income	[2]			15,442
Dividends	[1]	81		2,082	[2]
Korea Credit Bureau Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	128,297		117,077
Total liabilities	[2]	78,328		37,599
Share capital	[2]	10,000		10,000
Equity	[2]	49,969		79,478
Share of net asset amount	[2],[3]	4,497		7,153
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	4,497	[2],[3]	7,153	[2],[3]		5,991
Operating income	[2]	128,150		107,810
Profit (Loss)	[2]	(27,327)		13,391
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(27,327)		13,391
Dividends	[1],[2]	90		89
KoFC POSCO HANWHA KB Shared Growth Private Equity Fund No. 2
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]			42,585
Total liabilities	[2]			3,205
Share capital	[2]			38,960
Equity	[2]			39,380
Share of net asset amount	[2]			9,845
Unrealized gains (losses)	[2]			0
Carrying amount	[1]	0		9,845	[2]		13,616
Operating income	[2]			1,629
Profit (Loss)	[2]			626
Other comprehensive income	[2]			0
Total comprehensive income	[2]			626
Dividends	[1]	2,120		0	[2]
Keystone-Hyundai Securities No. 1 Private Equity Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]			178,848
Total liabilities	[2]			132,123
Share capital	[2]			42,837
Equity	[2]			46,725
Share of net asset amount	[2],[3]			1,556
Unrealized gains (losses)	[2]			0
Carrying amount	[1]	0		1,556	[2],[3]		1,625
Operating income	[2]			16,586
Profit (Loss)	[2]			(1,536)
Other comprehensive income	[2]			0
Total comprehensive income	[2]			(1,536)
Dividends	[1]	512		0	[2]
POSCO-KB Shipbuilding Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	17,754		41,807
Total liabilities	[2]	432		541
Share capital	[2]	8,880		33,200
Equity	[2]	17,322		41,266
Share of net asset amount	[2]	5,413		12,895
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	5,413	[2]	12,895	[2]		6,847
Operating income	[2]	1,880		12,842
Profit (Loss)	[2]	376		10,154
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	376		10,154
Dividends	[1],[2]	0		0
UNION Media Commerce Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	3,318		3,318
Total liabilities	[2]	10		7
Share capital	[2]	3,450		3,450
Equity	[2]	3,308		3,311
Share of net asset amount	[2]	959		960
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	959	[2]	960	[2]		961
Operating income	[2]	0		0
Profit (Loss)	[2]	(3)		(3)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(3)		(3)
Dividends	[1],[2]	0		0
KBSP Private Equity Fund No.4
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	37,646		39,795
Total liabilities	[2]	5		0
Share capital	[2]	40,800		40,800
Equity	[2]	37,641		39,795
Share of net asset amount	[2],[3]	5,628		5,950
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	5,628	[2],[3]	5,950	[2],[3]		5,904
Operating income	[2]	(1,358)		2
Profit (Loss)	[2]	(2,154)		306
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(2,154)		306
Dividends	[1],[2]	0		0
KB-Solidus Global Healthcare Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	112,358		106,215
Total liabilities	[2]	1,126		1,179
Share capital	[2]	68,400		75,600
Equity	[2]	111,232		105,036
Share of net asset amount	[2],[6]	48,201		45,516
Unrealized gains (losses)	[2]	697		697
Carrying amount	[1]	48,898	[2],[6]	46,213	[2],[6]		45,718
Operating income	[2]	18,782		6,435
Profit (Loss)	[2]	13,396		(12,655)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	13,396		(12,655)
Dividends	[1],[2]	0		0
KB-Stonebridge Secondary Private Equity Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	151,004		114,712
Total liabilities	[2]	316		496
Share capital	[2]	148,587		98,235
Equity	[2]	150,688		114,216
Share of net asset amount	[2],[3]	21,948		16,636
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	21,948	[2],[3]	16,636	[2],[3]		4,944
Operating income	[2]	55,572		20,068
Profit (Loss)	[2]	54,053		17,842
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	54,053		17,842
Dividends	[1],[2]	9,895		0
KB SPROTT Renewable Private Equity Fund No.1
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	13,886		13,896
Total liabilities	[2]	1,467		497
Share capital	[2]	15,376		15,376
Equity	[2]	12,419		13,399
Share of net asset amount	[2],[6]	4,680		5,049
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	4,680	[2],[6]	5,049	[2],[6]		1,295
Operating income	[2]	0		1
Profit (Loss)	[2]	(983)		(991)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(983)		(991)
Dividends	[1],[2]	0		0
KB-UTC Inno-Tech Venture Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	47,848		38,585
Total liabilities	[2]	497		207
Share capital	[2]	48,260		39,319
Equity	[2]	47,351		38,378
Share of net asset amount	[2],[6]	20,972		16,999
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	20,972	[2],[6]	16,999	[2],[6]		417
Operating income	[2]	1,080		0
Profit (Loss)	[2]	32		(866)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	32		(866)
Dividends	[1],[2]	0		0
KB-KDBC Pre-IPO New Technology Business Investment Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	18,069		24,655
Total liabilities	[2]	385		592
Share capital	[2]	13,200		20,400
Equity	[2]	17,684		24,063
Share of net asset amount	[2],[6]	11,789		16,042
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	11,789	[2],[6]	16,042	[2],[6]		18,988
Operating income	[2]	530		5,151
Profit (Loss)	[2]	120		4,421
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	120		4,421
Dividends	[1],[2]	0		0
KB-TS Technology Venture Private Equity Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	35,279		34,972
Total liabilities	[2]	5,228		3,490
Share capital	[2]	25,500		29,600
Equity	[2]	30,051		31,482
Share of net asset amount	[2],[6]	16,828		17,630
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	16,828	[2],[6]	17,630	[2],[6]		19,731
Operating income	[2]	2,094		5,342
Profit (Loss)	[2]	(1,151)		4,051
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(1,151)		4,051
Dividends	[1],[2]	0		0
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	69,943		64,968
Total liabilities	[2]	221		313
Share capital	[2]	61,100		62,980
Equity	[2]	69,722		64,655
Share of net asset amount	[2],[6]	29,669		27,513
Unrealized gains (losses)	[2]	(750)		(750)
Carrying amount	[1]	28,919	[2],[6]	26,763	[2],[6]		19,752
Operating income	[2]	14,244		5,257
Profit (Loss)	[2]	8,495		3,013
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	8,495		3,013
Dividends	[1],[2]	0		0
KB-SJ Tourism Venture Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	22,947		22,327
Total liabilities	[2]	557		6
Share capital	[2]	27,000		24,300
Equity	[2]	22,390		22,321
Share of net asset amount	[2],[3]	4,146		4,133
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	4,146	[2],[3]	4,133	[2],[3]		2,761
Operating income	[2]	170		0
Profit (Loss)	[2]	(2,631)		(689)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(2,631)		(689)
Dividends	[1],[2]	0		0
WJ Private Equity Fund No.1
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	35,799		36,197
Total liabilities	[2]	170		170
Share capital	[2]	37,100		37,100
Equity	[2]	35,629		36,027
Share of net asset amount	[2]	9,604		9,711
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	9,604	[2]	9,711	[2]		0
Operating income	[2]	291		2
Profit (Loss)	[2]	(398)		(1,073)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(398)		(1,073)
Dividends	[1],[2]	0		0
All Together Korea Fund No.2
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	10,073		10,025
Total liabilities	[2]	1		1
Share capital	[2]	10,002		10,001
Equity	[2]	10,072		10,024
Share of net asset amount	[2],[7]	10,070		10,023
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	10,070	[2],[7]	10,023	[2],[7]		0
Operating income	[2]	53		187
Profit (Loss)	[2]	47		150
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	47		150
Dividends	[1],[2]	0		0
KB-NAU Special Situation Corporate Restructuring Private Equity Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	127,960		47,607
Total liabilities	[2]	844		850
Share capital	[2]	111,600		47,500
Equity	[2]	127,116		46,757
Share of net asset amount	[2],[3]	15,254		5,611
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	15,254	[2],[3]	5,611	[2],[3]		0
Operating income	[2]	20,594		2,901
Profit (Loss)	[2]	16,252		(743)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	16,252		(743)
Dividends	[1],[2]	0		0
JR GLOBAL REIT
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]			1,859,214
Total liabilities	[2]			1,043,068
Share capital	[2]			165,600
Equity	[2]			816,146
Share of net asset amount	[2]			215,854
Unrealized gains (losses)	[2]			0
Carrying amount	[1]	0		215,854	[2]		0
Operating income	[2]			0
Profit (Loss)	[2]			0
Other comprehensive income	[2]			0
Total comprehensive income	[2]			0
Dividends	[1]	6,604		0	[2]
Project Vanilla Co., Ltd.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	1,283		4,445
Total liabilities	[2]	211		132
Share capital	[2]	5,000		5,000
Equity	[2]	1,072		4,313
Share of net asset amount	[2]	525		2,151
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	525	[2]	2,151	[2]		0
Operating income	[2]	0		0
Profit (Loss)	[2]	(3,231)		(611)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(3,231)		(611)
Dividends	[1],[2]	0		0
December & Company Inc.
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	71,219		68,173
Total liabilities	[2]	17,276		3,305
Share capital	[2]	37,241		35,441
Equity	[2]	53,943		64,868
Share of net asset amount	[2],[3]	9,054		24,402
Unrealized gains (losses)	[2]	12,334		0
Carrying amount	[1]	21,388	[2],[3]	24,402	[2],[3]		0
Operating income	[2]	3,982		756
Profit (Loss)	[2]	(20,767)		(2,469)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(20,767)		(2,469)
Dividends	[1],[2]	0		0
2020 KB Fintech Renaissance Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	12,252		10,841
Total liabilities	[2]	5		5
Share capital	[2]	10,900		10,900
Equity	[2]	12,247		10,836
Share of net asset amount	[2],[3]	618		547
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	618	[2],[3]	547	[2],[3]		0
Operating income	[2]	1,566		1
Profit (Loss)	[2]	1,411		(64)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	1,411		(64)
Dividends	[1],[2]	0		0
KB Bio Private Equity No.3 Ltd. [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	81,691
Total liabilities	[2]	101
Share capital	[2]	82,000
Equity	[2]	81,590
Share of net asset amount	[2],[3]	9,950
Unrealized gains (losses)	[2]	0
Carrying amount	[1]	9,950	[2],[3]	0
Operating income	[2]	4
Profit (Loss)	[2]	(410)
Other comprehensive income	[2]	0
Total comprehensive income	[2]	(410)
Dividends	[1],[2]	0
KB Material and Parts No.1 PEF
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	23,104		23,296
Total liabilities	[2]	0		0
Share capital	[2]	23,500		23,500
Equity	[2]	23,104		23,296
Share of net asset amount	[2],[3]	3,343		3,371
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	3,343	[2],[3]	3,371	[2],[3]		0
Operating income	[2]	451		0
Profit (Loss)	[2]	42		(204)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	42		(204)
Dividends	[1],[2]	34		0
FineKB Private Equity Fund No.1
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	32,583		0
Total liabilities	[2]	315		77
Share capital	[2]	33,500		0
Equity	[2]	32,268		(77)
Share of net asset amount	[2]	8,067		0
Unrealized gains (losses)	[2]	0		0
Carrying amount	[1]	8,067	[2]	0	[2]		0
Operating income	[2]	2		0
Profit (Loss)	[2]	(1,155)		(77)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(1,155)		(77)
Dividends	[1],[2]	0		0
G Payment Joint Stock Company [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	7,797
Total liabilities	[2]	557
Share capital	[2]	2,950
Equity	[2]	7,240
Share of net asset amount	[2]	3,175
Unrealized gains (losses)	[2]	6,175
Carrying amount	[1]	9,350	[2]	0
Operating income	[2]	819
Profit (Loss)	[2]	(762)
Other comprehensive income	[2]	0
Total comprehensive income	[2]	(762)
Dividends	[1],[2]	0
Smart Korea KB Future9Sejong Venture Fund [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	2,581
Total liabilities	[2]	81
Share capital	[2]	2,600
Equity	[2]	2,500
Share of net asset amount	[2]	962
Unrealized gains (losses)	[2]	0
Carrying amount	[1]	962	[2]	0
Operating income	[2]	2
Profit (Loss)	[2]	(100)
Other comprehensive income	[2]	0
Total comprehensive income	[2]	(100)
Dividends	[1],[2]	0
KBKTB Technology Venture Fund [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	11,008
Total liabilities	[2]	101
Share capital	[2]	11,000
Equity	[2]	10,907
Share of net asset amount	[2],[6]	5,503
Unrealized gains (losses)	[2]	51
Carrying amount	[1]	5,554	[2],[6]	0
Operating income	[2]	8
Profit (Loss)	[2]	(93)
Other comprehensive income	[2]	0
Total comprehensive income	[2]	(93)
Dividends	[1],[2]	0
KBSOLIDUS Healthcare Investment Fund [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	2,040
Total liabilities	[2]	0
Share capital	[2]	2,040
Equity	[2]	2,040
Share of net asset amount	[2],[6]	1,800
Unrealized gains (losses)	[2]	0
Carrying amount	[1]	1,800	[2],[6]	0
Operating income	[2]	0
Profit (Loss)	[2]	0
Other comprehensive income	[2]	0
Total comprehensive income	[2]	0
Dividends	[1],[2]	0
Paramark KB Fund No.1 [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	8,943
Total liabilities	[2]	3
Share capital	[2]	9,860
Equity	[2]	8,940
Share of net asset amount	[2]	1,850
Unrealized gains (losses)	[2]	0
Carrying amount	[1]	1,850	[2]	0
Operating income	[2]	0
Profit (Loss)	[2]	(920)
Other comprehensive income	[2]	0
Total comprehensive income	[2]	(920)
Dividends	[1],[2]	0
KB Star Office Private Real Estate Master Fund No.1 [Member]
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	247,259		231,018
Total liabilities	[2]	122,620		122,298
Share capital	[2]	95,000		95,000
Equity	[2]	124,639		108,720
Share of net asset amount	[2]	26,240		20,413
Unrealized gains (losses)	[2]	0		(347)
Carrying amount	[1]	26,240	[2]	20,066	[2]		₩ 19,839
Operating income	[2]	18		2,392
Profit (Loss)	[2]	(127)		1,076
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(127)		1,076
Dividends	[1],[2]	963		0
KB Social Impact Investment Fund
Disclosure of significant investments in major associates and joint ventures line items [Line Items]
Total assets	[2]	14,431		9,585
Total liabilities	[2]	157		4
Share capital	[2]	15,000		10,000
Equity	[2]	14,274		9,581
Share of net asset amount	[2]	4,282		2,874
Unrealized gains (losses)	[2]	0		0
Carrying amount	[2]	4,282		2,874
Operating income	[2]	7		8
Profit (Loss)	[2]	(306)		(301)
Other comprehensive income	[2]	0		0
Total comprehensive income	[2]	(306)		(301)
Dividends	[2]	₩ 0		₩ 0
[1]	Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million for the years ended December 31, 2020 and 2021, respectively.
[2]	The condensed financial information of the associates and joint ventures is adjusted to reflect adjustments, such as fair value adjustments recognized at the time of acquisition and adjustments for differences in accounting policies.
[3]	As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
[4]	The ownership of Paycoms Co., Ltd. would be 22.96% and 21.84% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
[5]	The ownership of Food Factory Co., Ltd. would be 30.00% and 30.00% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
[6]	In order to direct relevant activities, it is necessary to obtain the consent of the two co-operative members; the Group has applied the equity method as the Group cannot control the investee by itself.
[7]	As of December 31, 2020 and 2021, the Group participates in the investment management committee but cannot exercise control.

Investments in Associates and_5

Investments in Associates and Joint Ventures - Summary of Investments Associates and Joint Ventures (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)		Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	₩ 771,435			₩ 598,240
Acquisition and others	[1]	261,881			515,742
Disposal and others	[1]	(583,685)			(251,575)
Dividends	[1]	(32,903)			(18,669)
Gains(losses) on equity-method accounting	[1]	31,477			(68,518)
Other comprehensive income	[1]	513			(3,785)
Ending		₩ 448,718	[1]	$ 378,505	771,435	[1]
Description Of Other Changes In Investments In Associates		Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million		Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million
Gain on disposal of investments in associates and joint ventures		₩ 62,048			24,768
KB Pre IPO Secondary Venture Fund No.1
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	1,279	[2],[3]		1,705
Acquisition and others	[1]	0			0
Disposal and others	[1]	(292)			(586)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	635			160
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	1,622			1,279
KB GwS Private Securities Investment Trust
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	141,359	[3]		136,168
Acquisition and others	[1]	0			0
Disposal and others	[1]	(141,359)			0
Dividends	[1]	0			(9,525)	[3]
Gains(losses) on equity-method accounting	[1]	0			14,716
Other comprehensive income	[1]	0			0
Ending	[1]	0			141,359	[3]
PT Bank KB Bukopin TBK
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1],[4]	0			121,381
Acquisition and others	[1],[4]				43,909
Disposal and others	[1],[4]				(54,069)
Dividends	[1],[4]				0
Gains(losses) on equity-method accounting	[1],[4]				(107,258)
Other comprehensive income	[1],[4]				(3,963)
Ending	[1],[4]				0
Balhae Infrastructure Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	106,624	[2],[3]		101,391
Acquisition and others	[1]	280			893
Disposal and others	[1]	(463)			0
Dividends	[1],[3]	(9,121)			(6,973)
Gains(losses) on equity-method accounting	[1]	2,465			11,313
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	99,785			106,624
Aju Good Technology Venture Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	21,348	[3]		23,016
Acquisition and others	[1]	0			0
Disposal and others	[1]	(4,770)			(2,885)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	6,343			1,217
Other comprehensive income	[1]	0			0
Ending	[1],[3]	22,921			21,348
SY Auto Capital Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	16,144	[3]		12,725
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	2,027			3,422
Other comprehensive income	[1]	51			(3)
Ending	[1],[3]	18,222			16,144
Big Dipper Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0	[3]		125
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	0			(125)
Other comprehensive income	[1]	0			0
Ending	[1],[3]	0			0
Paycoms Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	198	[3],[5]		45
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	327			153
Other comprehensive income	[1]	0			0
Ending	[1],[3],[5]	525			198
Food Factory Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	1,281	[3],[6]		1,000
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	7			247
Other comprehensive income	[1]	32			34
Ending	[1],[3],[6]	1,320			1,281
KB Private Equity Fund No.3
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	94	[2],[3]		7,754
Acquisition and others	[1]	0			0
Disposal and others	[1]	(13)			(8,000)
Dividends	[1]	(81)			(2,082)	[3]
Gains(losses) on equity-method accounting	[1]	0			2,422
Other comprehensive income	[1]	0			0
Ending	[1]	0			94	[2],[3]
Korea Credit Bureau Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	7,153	[2],[3]		5,991
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	(90)			(89)
Gains(losses) on equity-method accounting	[1]	(2,566)			1,251
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	4,497			7,153
Keystone-Hyundai Securities No. 1 Private Equity Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	1,556	[2],[3]		1,625
Acquisition and others	[1]	0			0
Disposal and others	[1]	(1,044)			0
Dividends	[1]	(512)			0	[3]
Gains(losses) on equity-method accounting	[1]	0			(69)
Other comprehensive income	[1]	0			0
Ending	[1]	0			1,556	[2],[3]
POSCO-KB Shipbuilding Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	12,895	[3]		6,847
Acquisition and others	[1]	0			5,000
Disposal and others	[1]	(7,599)			(2,125)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	117			3,173
Other comprehensive income	[1]	0			0
Ending	[1],[3]	5,413			12,895
UNION Media Commerce Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	960	[3]		961
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(1)			(1)
Other comprehensive income	[1]	0			0
Ending	[1],[3]	959			960
KBSP Private Equity Fund No.4
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	5,950	[2],[3]		5,904
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(322)			46
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	5,628			5,950
KB Social Impact Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	2,874			1,465
Acquisition and others	[1]	1,500			1,500
Disposal and others	[1]	0			0
Dividends	[1]	0			0
Gains(losses) on equity-method accounting	[1]	(92)			(91)
Other comprehensive income	[1]	0			0
Ending	[1]	4,282			2,874
KB-Solidus Global Healthcare Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	46,213	[3],[7]		45,718
Acquisition and others	[1]	0			10,920
Disposal and others	[1]	(3,120)			(4,940)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	5,805			(5,485)
Other comprehensive income	[1]	0			0
Ending	[1],[3],[7]	48,898			46,213
KB-Stonebridge Secondary Private Equity Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	16,636	[2],[3]		4,944
Acquisition and others	[1]	13,257			9,093
Disposal and others	[1]	(5,924)			0
Dividends	[1],[3]	(9,895)			0
Gains(losses) on equity-method accounting	[1]	7,874			2,599
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	21,948			16,636
KB SPROTT Renewable Private Equity Fund No.1
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	5,049	[3],[7]		1,295
Acquisition and others	[1]	0			4,128
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(369)			(374)
Other comprehensive income	[1]	0			0
Ending	[1],[3],[7]	4,680			5,049
KB-UTC Inno-Tech Venture Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	16,999	[3],[7]		417
Acquisition and others	[1]	5,085			16,966
Disposal and others	[1]	(1,126)			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	14			(384)
Other comprehensive income	[1]	0			0
Ending	[1],[3],[7]	20,972			16,999
KB-KDBC Pre-IPO New Technology Business Investment Fund [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	16,042	[3],[7]		18,988
Acquisition and others	[1]	0			0
Disposal and others	[1]	(4,800)			(6,399)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	547			3,453
Other comprehensive income	[1]	0			0
Ending	[1],[3],[7]	11,789			16,042
KB-TS Technology Venture Private Equity Fund [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	17,630	[3],[7]		19,731
Acquisition and others	[1]	3,080			2,240
Disposal and others	[1]	(5,376)			(5,488)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	1,494			1,232
Other comprehensive income	[1]	0			(85)
Ending	[1],[3],[7]	16,828			17,630
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	26,763	[3],[7]		19,752
Acquisition and others	[1]	10,000			8,000
Disposal and others	[1]	(10,800)			(3,200)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	2,956			2,211
Other comprehensive income	[1]	0			0
Ending	[1],[3],[7]	28,919			26,763
KB-SJ Tourism Venture Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	4,133	[2],[3]		2,761
Acquisition and others	[1]	499			1,500
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(486)			(128)
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	4,146			4,133
Incheon Bridge Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0	[2],[3]		0
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	0			0
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	0			0
WJ Private Equity Fund No.1
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	9,711	[3]		0
Acquisition and others	[1]	0			10,000
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(107)			(289)
Other comprehensive income	[1]	0			0
Ending	[1],[3]	9,604			9,711
All Together Korea Fund No.2
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	10,023	[3],[8]		0
Acquisition and others	[1]	0			100,000
Disposal and others	[1]	0			(90,000)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	47			150
Other comprehensive income	[1]	0			(127)
Ending	[1],[3],[8]	10,070			10,023
KB-NAU Special Situation Corporate Restructuring Private Equity Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	5,611	[2],[3]		0
Acquisition and others	[1]	7,692			5,700
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	1,951			(89)
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	15,254			5,611
Project Vanilla Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	2,151	[3]		0
Acquisition and others	[1]	0			2,450
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(1,626)			(299)
Other comprehensive income	[1]	0			0
Ending	[1],[3]	525			2,151
December & Company Inc.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	24,402	[2],[3]		0
Acquisition and others	[1]	481			30,000
Disposal and others	[1]	0			(5,151)
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(3,507)			(447)
Other comprehensive income	[1]	12			0
Ending	[1],[2],[3]	21,388			24,402
2020 KB Fintech Renaissance Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	547	[2],[3]		0
Acquisition and others	[1]	0			550
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	71			(3)
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	618			547
KB Material and Parts No.1 PEF
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	3,371	[2],[3]		0
Acquisition and others	[1]	0			3,400
Disposal and others	[1]	0			0
Dividends	[1],[3]	(34)			0
Gains(losses) on equity-method accounting	[1]	6			(29)
Other comprehensive income	[1]	0			0
Ending	[1],[2],[3]	3,343			3,371
FineKB Private Equity Fund No.1
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0	[3]		0
Acquisition and others	[1]	8,375			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	0			0
Gains(losses) on equity-method accounting	[1]	(308)			0
Other comprehensive income	[1]	0			0
Ending	[1],[3]	8,067			0
KB Bio Private Equity No.3 Ltd. [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	10,000
Disposal and others	[1]	0
Dividends	[1],[3]	0
Gains(losses) on equity-method accounting	[1]	(50)
Other comprehensive income	[1]	0
Ending	[1]	9,950	[2],[3]		0
K The 15th REIT Co., Ltd.
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	8,600
Disposal and others	[1]	(8,600)
Dividends	[1]	0
Gains(losses) on equity-method accounting	[1]	0
Other comprehensive income	[1]	0
Ending	[1]	0			0
G payment Joint Stock Company
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	9,684
Disposal and others	[1]	0
Dividends	[1],[3]	0
Gains(losses) on equity-method accounting	[1]	(334)
Other comprehensive income	[1]	0
Ending	[1]	9,350	[3]		0
Four Ninety Eight Seventh Owners L L C 3 [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1],[9]	0
Acquisition and others	[1],[9]	172,907
Disposal and others	[1],[9]	(169,424)
Dividends	[1],[9]	(3,483)
Gains(losses) on equity-method accounting	[1],[9]	0
Other comprehensive income	[1],[9]	0
Ending	[1],[9]	0			0
Smart Korea KB Future9Sejong Venture Fund [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	1,000
Disposal and others	[1]	0
Dividends	[1],[3]	0
Gains(losses) on equity-method accounting	[1]	(38)
Other comprehensive income	[1]	0
Ending	[1]	962	[3]		0
KB-KTB Technology Venture Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	5,601
Disposal and others	[1]	0
Dividends	[1],[3]	0
Gains(losses) on equity-method accounting	[1]	(47)
Other comprehensive income	[1]	0
Ending	[1]	5,554	[3],[7]		0
KB-SOLIDUS Healthcare Investment Fund
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	1,800
Disposal and others	[1]	0
Dividends	[1],[3]	0
Gains(losses) on equity-method accounting	[1]	0
Other comprehensive income	[1]	0
Ending	[1]	1,800	[3],[7]		0
Paramark KB Fund No.1 [Member]
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	0
Acquisition and others	[1]	2,040
Disposal and others	[1]	0
Dividends	[1],[3]	0
Gains(losses) on equity-method accounting	[1]	(190)
Other comprehensive income	[1]	0
Ending	[1]	1,850	[3]		0
Others
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	674			23,076
Acquisition and others	[1]	0			40,000
Disposal and others	[1]	0			(61,862)
Dividends	[1]	0			0
Gains(losses) on equity-method accounting	[1]	(303)			(899)
Other comprehensive income	[1]	418			359
Ending	[1]	789			674
KB Star Office Private Real Estate Master Fund No.1
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	20,066	[3]		19,839
Acquisition and others	[1]	0			0
Disposal and others	[1]	0			0
Dividends	[1],[3]	(963)			0
Gains(losses) on equity-method accounting	[1]	7,137			227
Other comprehensive income	[1]	0			0
Ending	[1],[3]	26,240			20,066
KoFC POSCO HANWHA KB Shared Growth Private Equity Fund No. 2
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	9,845	[3]		13,616
Acquisition and others	[1]	0			0
Disposal and others	[1]	(9,725)			(3,231)
Dividends	[1]	(2,120)			0	[3]
Gains(losses) on equity-method accounting	[1]	2,000			(540)
Other comprehensive income	[1]	0			0
Ending	[1]	0			9,845	[3]
JR Global REIT
Disclosure Of Changes In Investments In Associates Line Items [Line Items]
Beginning	[1]	215,854	[3]		0
Acquisition and others	[1]	0			219,493
Disposal and others	[1]	(209,250)			(3,639)
Dividends	[1]	(6,604)			0	[3]
Gains(losses) on equity-method accounting	[1]	0			0
Other comprehensive income	[1]	0			0
Ending	[1]	₩ 0			₩ 215,854	[3]
[1]	Gains on disposal of investments in associates and joint ventures amount to ￦ 24,768 million ￦ 62,048 million for the years ended December 31, 2020 and 2021, respectively.
[2]	As of December 31, 2020 and 2021, the Group can exercise significant influence on the decision-making processes of the associate’s financial and business policies through participation in governing bodies.
[3]	The condensed financial information of the associates and joint ventures is adjusted to reflect adjustments, such as fair value adjustments recognized at the time of acquisition and adjustments for differences in accounting policies.
[4]	The investment was reclassified from associates to subsidiaries during the year ended December 31, 2020 due to additional share purchase.
[5]	The ownership of Paycoms Co., Ltd. would be 22.96% and 21.84% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
[6]	The ownership of Food Factory Co., Ltd. would be 30.00% and 30.00% as of December 31, 2020 and 2021, respectively, considering the potential voting rights of convertible bonds.
[7]	In order to direct relevant activities, it is necessary to obtain the consent of the two co-operative members; the Group has applied the equity method as the Group cannot control the investee by itself.
[8]	As of December 31, 2020 and 2021, the Group participates in the investment management committee but cannot exercise control.
[9]	The investment was classified as assets of a disposal group held for sale as of December 31, 2021.

Investments in Associates and_6

Investments in Associates and Joint Ventures - Summary of Accumulated Unrecognized Share of Losses in Investments in Associates (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	₩ 2,352	₩ 3,839
Accumulated unrecognized loss	22,034	20,040
DSMETAL Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	38	0
Accumulated unrecognized loss	103	65
Incheon Bridge Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	1,381	3,354
Accumulated unrecognized loss	19,481	18,100
Jungdong Steel Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	0	0
Accumulated unrecognized loss	489	489
Dpaps Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	0	19
Accumulated unrecognized loss	0	358
Shinla Construction Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	0	0
Accumulated unrecognized loss	183	183
Jaeyang Industry Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	0	0
Accumulated unrecognized loss	30	30
Terra Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	0	0
Accumulated unrecognized loss	14	14
Jungdo Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	239	151
Accumulated unrecognized loss	551	312
Jinseung Tech Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	12	0
Accumulated unrecognized loss	33	21
Korea NM Tech Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	0	0
Accumulated unrecognized loss	28	28
Chongil Machine & Tools Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	49	0
Accumulated unrecognized loss	68	19
Skydigital Inc.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	68	0
Accumulated unrecognized loss	174	106
IMT TECHNOLOGY Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	(3)	3
Accumulated unrecognized loss	0	3
Jo Yang Industrial Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	9	96
Accumulated unrecognized loss	105	96
IDTECK CO., LTD
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	(72)	216
Accumulated unrecognized loss	144	216
MJT&I Corp.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	152	0
Accumulated unrecognized loss	152	0
Dae-A Leisure Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	202	0
Accumulated unrecognized loss	202	0
Il-Kwang Electronic Materials Co., Ltd
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	160	0
Accumulated unrecognized loss	160	0
Inter Shipping Co., Ltd.
Disclosure Of Accumulated Unrecognized Share Of Losses In Investments In Associates Line Items [Line Items]
Unrecognized loss	117	0
Accumulated unrecognized loss	₩ 117	₩ 0

Property and Equipment and In_2

Property and Equipment and Investment Properties - Summary of Property and Equipment (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Changes in property, plant and equipment [abstract]
Carrying amount		₩ 5,239,898		₩ 5,433,554
Beginning(PPE)		5,433,554		5,067,377
Acquisition		913,807		881,262
Disposal		(340,435)		(212,960)
Depreciation	[1]	(607,310)		(629,116)
Transfers	[2]	(218,628)		(178,329)
Business combination		557		497,043
Depreciation Recognised In Profit Or Loss		196		123
Others		58,353		8,277
Ending(PPE)		5,239,898	$ 4,419,990	5,433,554
Changes In Accumulated Impairment Of Property Plant And Equipment Abstract [Abstract]
Beginning(Accumulated impairment losses of PPE)		(6,877)		(8,055)
Impairment				(12)
Reversal				0
Disposal and Others				1,190
Ending(Accumaulated impairment losses of PPE)				(6,877)
Accumulated impairment losses on property and equipment excluding Right-of use assets
Changes In Accumulated Impairment Of Property Plant And Equipment Abstract [Abstract]
Beginning(Accumulated impairment losses of PPE)		(6,877)		(6,877)
Impairment		0		(12)
Reversal		0		0
Disposal and Others		1,126		12
Ending(Accumaulated impairment losses of PPE)		(5,751)		(6,877)
Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		9,495,076		9,327,847
Beginning(PPE)		9,327,847
Ending(PPE)		9,495,076		9,327,847
Accumulated Impairment losses On Right Of Use Assets In Property And Equipment
Changes In Accumulated Impairment Of Property Plant And Equipment Abstract [Abstract]
Beginning(Accumulated impairment losses of PPE)		0		(1,178)
Impairment				0
Reversal				0
Disposal and Others				1,178
Ending(Accumaulated impairment losses of PPE)				0
Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		(4,249,427)		(3,887,416)
Beginning(PPE)		(3,887,416)
Ending(PPE)		(4,249,427)		(3,887,416)
Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		(5,751)		(6,877)
Beginning(PPE)		(6,877)
Ending(PPE)		(5,751)		(6,877)
Land
Changes in property, plant and equipment [abstract]
Carrying amount		2,548,181		2,610,586
Beginning(PPE)		2,610,586		2,430,794
Acquisition		1,106		6,475
Disposal		(11,399)		(2,578)
Depreciation	[1]	0		0
Transfers	[2]	(81,690)		(116,264)
Business combination		0		295,421
Others		29,578		(3,262)
Ending(PPE)		2,548,181		2,610,586
Land | Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		2,548,185		2,611,604
Beginning(PPE)		2,611,604
Ending(PPE)		2,548,185		2,611,604
Land | Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		0		0
Beginning(PPE)		0
Ending(PPE)		0		0
Land | Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		(4)		(1,018)
Beginning(PPE)		(1,018)
Ending(PPE)		(4)		(1,018)
Buildings
Changes in property, plant and equipment [abstract]
Carrying amount		1,676,657		1,771,582
Beginning(PPE)		1,771,582		1,502,923
Acquisition		2,412		43,592
Disposal				(4,442)
Disposal		6,213
Depreciation	[1]	(69,118)		(61,339)
Transfers	[2]	(79,802)		190,917
Business combination		0		100,984
Others		45,370		(1,053)
Ending(PPE)		1,676,657		1,771,582
Buildings | Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		2,534,134		2,607,957
Beginning(PPE)		2,607,957
Ending(PPE)		2,534,134		2,607,957
Buildings | Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		(851,730)		(830,516)
Beginning(PPE)		(830,516)
Ending(PPE)		(851,730)		(830,516)
Buildings | Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		(5,747)		(5,859)
Beginning(PPE)		(5,859)
Ending(PPE)		(5,747)		(5,859)
Leasehold improvements
Changes in property, plant and equipment [abstract]
Carrying amount		88,251		95,827
Beginning(PPE)		95,827		116,124
Acquisition		13,079		13,348
Disposal		(891)		(574)
Depreciation	[1]	(61,294)		(73,394)
Transfers	[2]	40,148		34,596
Business combination		0		5,087
Others		1,382		640
Ending(PPE)		88,251		95,827
Leasehold improvements | Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		977,853		929,120
Beginning(PPE)		929,120
Ending(PPE)		977,853		929,120
Leasehold improvements | Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		(889,602)		(833,293)
Beginning(PPE)		(833,293)
Ending(PPE)		(889,602)		(833,293)
Leasehold improvements | Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		0		0
Beginning(PPE)		0
Ending(PPE)		0		0
Equipment and vehicles
Changes in property, plant and equipment [abstract]
Carrying amount		311,183		340,658
Beginning(PPE)		340,658		380,353
Acquisition		153,459		161,515
Disposal		(1,819)		(1,990)
Depreciation	[1]	(187,918)		(221,697)
Transfers	[2]	2,488		3,705
Business combination		537		19,873
Others		3,778		(1,101)
Ending(PPE)		311,183		340,658
Equipment and vehicles | Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		2,093,461		2,040,100
Beginning(PPE)		2,040,100
Ending(PPE)		2,093,461		2,040,100
Equipment and vehicles | Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		(1,782,278)		(1,699,442)
Beginning(PPE)		(1,699,442)
Ending(PPE)		(1,782,278)		(1,699,442)
Equipment and vehicles | Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		0		0
Beginning(PPE)		0
Ending(PPE)		0		0
Construction in progress
Changes in property, plant and equipment [abstract]
Carrying amount		39,579		44,190
Beginning(PPE)		44,190		86,303
Acquisition		129,682		229,927
Disposal		(8,435)		0
Depreciation	[1]	0		0
Transfers	[2]	(99,763)		(291,336)
Business combination		0		20,022
Others		(26,095)		(726)
Ending(PPE)		39,579		44,190
Construction in progress | Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		39,579		44,190
Beginning(PPE)		44,190
Ending(PPE)		39,579		44,190
Construction in progress | Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		0		0
Beginning(PPE)		0
Ending(PPE)		0		0
Construction in progress | Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		0		0
Beginning(PPE)		0
Ending(PPE)		0		0
Right-of-use assets In Property and Equipment
Changes in property, plant and equipment [abstract]
Carrying amount		576,047		570,711
Beginning(PPE)		570,711		550,880
Acquisition		614,069		426,405
Disposal		(324,104)		(203,376)
Depreciation	[1]	(288,980)		(272,686)
Transfers	[2]	(9)		53
Business combination		20		55,656
Others		4,340		13,779
Ending(PPE)		576,047		570,711
Right-of-use assets In Property and Equipment | Acquisition cost
Changes in property, plant and equipment [abstract]
Carrying amount		1,301,864		1,094,876
Beginning(PPE)		1,094,876
Ending(PPE)		1,301,864		1,094,876
Right-of-use assets In Property and Equipment | Accumulated amortization
Changes in property, plant and equipment [abstract]
Carrying amount		(725,817)		(524,165)
Beginning(PPE)		(524,165)
Ending(PPE)		(725,817)		(524,165)
Right-of-use assets In Property and Equipment | Accumulated impairment [member]
Changes in property, plant and equipment [abstract]
Carrying amount		0		0
Beginning(PPE)		0
Ending(PPE)		₩ 0		₩ 0
[1]	Includes depreciation expenses amounting to ￦ 123 million and ￦ 196 million recorded as other operating expenses and others for the years ended December 31, 2020 and 2021, respectively.
[2]	Includes transfers with investment properties and assets held for sale.

Property and Equipment and In_3

Property and Equipment and Investment Properties - Summary of Investment Property (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure of detailed information about investment property [line items]
Carrying amount		₩ 2,514,944		₩ 2,533,539
Reconciliation of changes in investment property [abstract]
Beginning		2,533,539		2,827,988
Changes in investment property [abstract]
Acquisition		118,961		53,196
Transfers	[1]	24,212		99,077
Disposal		(175,705)		(545,347)
Depreciation		(28,933)		(38,717)
Business combination				149,113
Others		42,870		(11,771)
Ending		2,514,944	$ 2,121,420	2,533,539
Acquisition cost
Disclosure of detailed information about investment property [line items]
Carrying amount		2,667,561		2,661,245
Reconciliation of changes in investment property [abstract]
Beginning		2,661,245
Changes in investment property [abstract]
Ending		2,667,561		2,661,245
Accumulated amortization
Disclosure of detailed information about investment property [line items]
Carrying amount		(147,307)		(122,833)
Reconciliation of changes in investment property [abstract]
Beginning		(122,833)
Changes in investment property [abstract]
Ending		(147,307)		(122,833)
Accumulated impairment [member]
Disclosure of detailed information about investment property [line items]
Carrying amount		(5,310)		(4,873)
Reconciliation of changes in investment property [abstract]
Beginning		(4,873)
Changes in investment property [abstract]
Ending		(5,310)		(4,873)
Land
Disclosure of detailed information about investment property [line items]
Carrying amount		1,577,353		1,568,098
Reconciliation of changes in investment property [abstract]
Beginning		1,568,098		1,537,240
Changes in investment property [abstract]
Acquisition		28,568		34,529
Transfers	[1]	22,410		61,383
Disposal		(63,546)		(167,015)
Depreciation		0		0
Business combination				106,944
Others		21,823		(4,983)
Ending		1,577,353		1,568,098
Land | Acquisition cost
Disclosure of detailed information about investment property [line items]
Carrying amount		1,577,800		1,568,508
Reconciliation of changes in investment property [abstract]
Beginning		1,568,508
Changes in investment property [abstract]
Ending		1,577,800		1,568,508
Land | Accumulated amortization
Disclosure of detailed information about investment property [line items]
Carrying amount		0		0
Reconciliation of changes in investment property [abstract]
Beginning		0
Changes in investment property [abstract]
Ending		0		0
Land | Accumulated impairment [member]
Disclosure of detailed information about investment property [line items]
Carrying amount		(447)		(410)
Reconciliation of changes in investment property [abstract]
Beginning		(410)
Changes in investment property [abstract]
Ending		(447)		(410)
Buildings
Disclosure of detailed information about investment property [line items]
Carrying amount		937,591		965,441
Reconciliation of changes in investment property [abstract]
Beginning		965,441		1,290,748
Changes in investment property [abstract]
Acquisition		90,393		18,667
Transfers	[1]	1,802		37,694
Disposal		(112,159)		(378,332)
Depreciation		(28,933)		(38,717)
Business combination				42,169
Others		21,047		(6,788)
Ending		937,591		965,441
Buildings | Acquisition cost
Disclosure of detailed information about investment property [line items]
Carrying amount		1,089,761		1,092,737
Reconciliation of changes in investment property [abstract]
Beginning		1,092,737
Changes in investment property [abstract]
Ending		1,089,761		1,092,737
Buildings | Accumulated amortization
Disclosure of detailed information about investment property [line items]
Carrying amount		(147,307)		(122,833)
Reconciliation of changes in investment property [abstract]
Beginning		(122,833)
Changes in investment property [abstract]
Ending		(147,307)		(122,833)
Buildings | Accumulated impairment [member]
Disclosure of detailed information about investment property [line items]
Carrying amount		(4,863)		(4,463)
Reconciliation of changes in investment property [abstract]
Beginning		(4,463)
Changes in investment property [abstract]
Ending		₩ (4,863)		₩ (4,463)
[1]	Includes transfers with property and equipment and assets held for sale.

Property and Equipment and In_4

Property and Equipment and Investment Properties - Summary of Valuation Technique and Input Variables used to Measure the Fair Value of Investment Property (Details) - Land and buildings - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 2,712,402	₩ 2,712,653
Description of extent to which fair value of investment property is based on valuation by independent valuer	Investment properties are measured by qualified independent appraisers with recent experience in valuing similar properties in the same area.
Description Of Investment Property Of Level Of Fair Value Hierarchy Within Which Fair Value Measurement Is Categorised	In addition, all investment properties are classified as Level 3 in accordance with fair value hierarchy in Note 6.1.2.
Cost Approach Method
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 124,021
Description Of Inputs Used In Fair Value Measurement Investment Property	-  Price per square meter -  Replacement cost
Market comparision Method
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 1,118,793
Description Of Inputs Used In Fair Value Measurement Investment Property	-  Price per square meter
Discounted cash flow method
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 1,236,638
Description Of Inputs Used In Fair Value Measurement Investment Property	-  Prospective rental market growth rate -  Period of vacancy -  Rental ratio -  Discount rate and others
Income approach method
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value	₩ 232,950
Description Of Inputs Used In Fair Value Measurement Investment Property	-  Discount rate -  Capitalization rate -  Vacancy rate

Property and Equipment and In_5

Property and Equipment and Investment Properties - Rental Income from the above Investment Properties (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Rental income from investment property, net of direct operating expense [abstract]
Rental income from the investment properties	₩ 123,313	₩ 157,652

Intangible Assets - Intangible

Intangible Assets - Intangible Assets (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		₩ 3,266,357		₩ 3,351,133
Changes in intangible assets other than goodwill [abstract]
Beginning		3,351,133
Ending		3,266,357	$ 2,755,257	3,351,133
Insurance expenses and other operating expenses and others in the statements of comprehensive income		189,791		173,992
Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		6,114,490		5,815,262
Changes in intangible assets other than goodwill [abstract]
Beginning		5,815,262
Ending		6,114,490		5,815,262
Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(2,732,394)		(2,304,188)
Changes in intangible assets other than goodwill [abstract]
Beginning		(2,304,188)
Ending		(2,732,394)		(2,304,188)
Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(105,404)		(106,781)
Changes in intangible assets other than goodwill [abstract]
Beginning		(106,781)
Ending		(105,404)		(106,781)
Others
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(10,335)		(53,160)
Changes in intangible assets other than goodwill [abstract]
Beginning		(53,160)
Ending		(10,335)		(53,160)
Goodwill
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		806,407		763,582
Changes in intangible assets other than goodwill [abstract]
Beginning		763,582
Ending		806,407		763,582
Reconciliation Of Changes In Accumulated Impairment Losses Of Intangible Assets Intangible Assets And Goodwill [Abstract]
Beginning (Accumulated impairment losses of Intangible assets and goodwill)		(70,517)		(70,517)
Changes In Accumulated Impairment Intangible Assets And Goodwill [Abstract]
Impairment		0		0
Other		0		0
Ending (Accumulated impairment losses of Intangible assets and goodwill)		(70,517)		(70,517)
Goodwill | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		887,259		887,259
Changes in intangible assets other than goodwill [abstract]
Beginning		887,259
Ending		887,259		887,259
Goodwill | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		0		0
Changes in intangible assets other than goodwill [abstract]
Beginning		0
Ending		0		0
Goodwill | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(70,517)		(70,517)
Changes in intangible assets other than goodwill [abstract]
Beginning		(70,517)
Ending		(70,517)		(70,517)
Goodwill | Others
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(10,335)		(53,160)
Changes in intangible assets other than goodwill [abstract]
Beginning		(53,160)
Ending		(10,335)		(53,160)
Industrial property rights
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		1,103		2,346
Changes in intangible assets other than goodwill [abstract]
Beginning		2,346		2,853
Acquisition&Transfer		207		116
Disposal		(1,080)		(147)
Amortization	[1]	(370)		(476)
Business combination		0		0
Others		0		0
Ending		1,103		2,346
Industrial property rights | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		3,056		6,222
Changes in intangible assets other than goodwill [abstract]
Beginning		6,222
Ending		3,056		6,222
Industrial property rights | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(1,953)		(2,936)
Changes in intangible assets other than goodwill [abstract]
Beginning		(2,936)
Ending		(1,953)		(2,936)
Industrial property rights | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		0		(940)
Changes in intangible assets other than goodwill [abstract]
Beginning		(940)
Ending		0		(940)
Software
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		578,941		573,187
Changes in intangible assets other than goodwill [abstract]
Beginning		573,187		373,519
Acquisition&Transfer		219,128		340,045
Disposal		(838)		(4,444)
Amortization	[1]	(216,073)		(153,876)
Business combination		8,742		18,252
Others		(5,205)		(309)
Ending		578,941		573,187
Software | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		1,996,646		1,800,686
Changes in intangible assets other than goodwill [abstract]
Beginning		1,800,686
Ending		1,996,646		1,800,686
Software | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(1,417,705)		(1,225,173)
Changes in intangible assets other than goodwill [abstract]
Beginning		(1,225,173)
Ending		(1,417,705)		(1,225,173)
Software | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		0		(2,326)
Changes in intangible assets other than goodwill [abstract]
Beginning		(2,326)
Ending		0		(2,326)
Other intangible assets
Disclosure of detailed information about intangible assets [line items]
Carrying Amount	[2]	396,747		371,774
Changes in intangible assets other than goodwill [abstract]
Beginning	[2]	371,774		266,517
Acquisition&Transfer	[2]	100,460		63,743
Disposal	[2]	(16,907)		(9,527)
Amortization	[1],[2]	(59,761)		(47,948)
Business combination	[2]	0		106,445
Others	[2]	1,181		(7,456)
Ending	[2]	396,747		371,774
Other intangible assets | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		797,107		690,665
Changes in intangible assets other than goodwill [abstract]
Beginning		690,665
Ending		797,107		690,665
Other intangible assets | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(365,473)		(285,893)
Changes in intangible assets other than goodwill [abstract]
Beginning		(285,893)
Ending		(365,473)		(285,893)
Other intangible assets | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(34,887)		(32,998)
Changes in intangible assets other than goodwill [abstract]
Beginning		(32,998)
Ending		(34,887)		(32,998)
Value of Business Acquired (VOBA)
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		1,479,545		1,635,619
Changes in intangible assets other than goodwill [abstract]
Beginning		1,635,619		1,809,485
Acquisition&Transfer		0		0
Disposal		0		0
Amortization	[1]	(156,074)		(173,866)
Business combination		0		0
Others		0		0
Ending		1,479,545		1,635,619
Value of Business Acquired (VOBA) | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		2,395,291		2,395,291
Changes in intangible assets other than goodwill [abstract]
Beginning		2,395,291
Ending		2,395,291		2,395,291
Value of Business Acquired (VOBA) | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(915,746)		(759,672)
Changes in intangible assets other than goodwill [abstract]
Beginning		(759,672)
Ending		(915,746)		(759,672)
Value of Business Acquired (VOBA) | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		0		0
Changes in intangible assets other than goodwill [abstract]
Beginning		0
Ending		0		0
Right-of-use intangible assets
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		3,614		4,625
Changes in intangible assets other than goodwill [abstract]
Beginning		4,625		9,698
Acquisition&Transfer		0		0
Disposal		0		0
Amortization	[1]	(1,012)		(5,026)
Business combination		0		0
Others		1		(47)
Ending		3,614		4,625
Right-of-use intangible assets | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		35,131		35,139
Changes in intangible assets other than goodwill [abstract]
Beginning		35,139
Ending		35,131		35,139
Right-of-use intangible assets | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(31,517)		(30,514)
Changes in intangible assets other than goodwill [abstract]
Beginning		(30,514)
Ending		(31,517)		(30,514)
Right-of-use intangible assets | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		0		0
Changes in intangible assets other than goodwill [abstract]
Beginning		0
Ending		0		0
Other intangible assets
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		2,459,950		2,587,551
Changes in intangible assets other than goodwill [abstract]
Beginning		2,587,551		2,462,072
Acquisition&Transfer		319,795		403,904
Disposal		(18,825)		(14,118)
Amortization	[1]	(433,290)		(381,192)
Business combination		8,742		124,697
Others		(4,023)		(7,812)
Ending		2,459,950		2,587,551
Reconciliation Of Changes In Accumulated Impairment Losses Of Intangible Assets Intangible Assets And Goodwill [Abstract]
Beginning (Accumulated impairment losses of Intangible assets and goodwill)		(36,264)		(31,652)
Changes In Accumulated Impairment Intangible Assets And Goodwill [Abstract]
Impairment		(5,306)		(9,312)
Reversal		2,939		3,669
Disposal and others		3,744		1,031
Ending (Accumulated impairment losses of Intangible assets and goodwill)		(34,887)		(36,264)
Other intangible assets | Acquisition cost
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		5,227,231		4,928,003
Changes in intangible assets other than goodwill [abstract]
Beginning		4,928,003
Ending		5,227,231		4,928,003
Other intangible assets | Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(2,732,394)		(2,304,188)
Changes in intangible assets other than goodwill [abstract]
Beginning		(2,304,188)
Ending		(2,732,394)		(2,304,188)
Other intangible assets | Accumulated impairment losses
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		(34,887)		(36,264)
Changes in intangible assets other than goodwill [abstract]
Beginning		(36,264)
Ending		(34,887)		(36,264)
Other intangible assets | Others
Disclosure of detailed information about intangible assets [line items]
Carrying Amount		0		0
Changes in intangible assets other than goodwill [abstract]
Beginning		0
Ending		₩ 0		₩ 0
[1]	Includes ￦ 173,992 million and ￦ 189,791 million recorded as insurance expenses and other operating expenses for the years ended December 31, 2020 and 2021, respectively.
[2]	Impairment losses for membership right with indefinite useful life among other intangible assets are recognized when its recoverable amount is lower than its carrying amount, and reversal of impairment losses are recognized when its recoverable amount is higher than its carrying amount.

Intangible Assets - Summary of

Intangible Assets - Summary of Goodwill (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		₩ 887,259	₩ 887,259
Carrying amount	[1]	806,407	763,582
Housing&Commercial Bank
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		65,288	65,288
Carrying amount	[1]	65,288	65,288
KB Cambodia Bank
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		1,202	1,202
Carrying amount	[1]	0	0
KB Securities Co., Ltd.
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		70,265	70,265
Carrying amount	[1]	58,889	58,889
KB Capital Co.,Ltd.
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		79,609	79,609
Carrying amount	[1]	79,609	79,609
KB Savings Bank Co., Ltd.
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		115,343	115,343
Carrying amount	[1]	57,404	57,404
KB Securities Vietnam Joint Stock Company
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		13,092	13,092
Carrying amount	[1]	13,533	12,234
KB Daehan Specialized Bank PLC.
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		1,515	1,515
Carrying amount	[1]	1,601	1,470
PRASAC Microfinance Institution Plc.
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		396,942	396,942
Carrying amount	[1]	388,524	356,570
PT Sunindo Kookmin Best Finance
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		2,963	2,963
Carrying amount	[1]	2,894	2,963
PT Bank KB Bukopin TBK
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		89,220	89,220
Carrying amount	[1]	85,893	80,002
PT. KB Finansia Multi Finance
Disclosure of reconciliation of changes in goodwill [line items]
Acquisition cost		51,820	51,820
Carrying amount	[1]	₩ 52,772	₩ 49,153
[1]	Includes the effect of exchange differences and others.

Intangible Assets - Summary o_2

Intangible Assets - Summary of Allocating Goodwill to Cash Generating Units and Related Information for Impairment Testing (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 806,407
Recoverable amount exceeded carrying amount	₩ 10,418,977
Description of basis on which unit's recoverable amount has been determined	For impairment testing, goodwill is allocated to cash-generating units that are expected to benefit from the synergies of the business combination, and cash-generating units consist of an operating segment or units which are not larger than an operating segment. Cash-generating units to which goodwill has been allocated is tested for impairment annually and whenever there is an indication that the unit may be impaired, by comparing the carrying amount of the unit including the goodwill with the recoverable amount of the unit.
Explanation of period over which management has projected cash flows	The recoverable amount of a cash-generating unit is measured at the higher of its fair value less costs of disposal and its value in use.
Description of key assumptions on which management has based determination of fair value less costs of disposal	The estimated future cash flows are based on the most recent financial budget approved by management with maximum period of 5 years.
Description of valuation techniques used to measure fair value less costs of disposal	Value in use is the present value of the future cash flows expected to be derived from an asset or cash-generating unit. The estimated future cash flows are based on the most recent financial budget approved by management with maximum period of 5 years. In relation to subsequent cash flows, it is assumed that cash flows will grow at a certain permanent growth rate. The key assumptions used for the estimation of the future cash flows are based on the market size and the Group’s market share. The discount rate is a pre-tax rate that reflects assumptions regarding risk-free interest rate, market risk premium, and the risks specific to the cash-generating unit.
Retail Banking
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 49,315
Recoverable amount exceeded carrying amount	₩ 5,767,992
Discount rate	18.57%
Permanent growth rate	1.00%
Corporate Banking
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 15,973
Recoverable amount exceeded carrying amount	₩ 2,004,756
Discount rate	18.96%
Permanent growth rate	1.00%
KB Securities Co., Ltd.
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 58,889
Recoverable amount exceeded carrying amount	₩ 1,369,331
Discount rate	21.27%
Permanent growth rate	1.00%
KB Capital Co.,Ltd.
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 79,609
Recoverable amount exceeded carrying amount	₩ 204,215
Discount rate	24.01%
Permanent growth rate	1.00%
KB Savings Bank Co., Ltd.
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 57,404
Recoverable amount exceeded carrying amount	₩ 542,790
Discount rate	14.37%
Permanent growth rate	1.00%
KB Securities Vietnam Joint Stock Company
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 13,533
Recoverable amount exceeded carrying amount	₩ 35,525
Discount rate	22.09%
Permanent growth rate	1.00%
KB Daehan Specialized Bank PLC.
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 1,601
Recoverable amount exceeded carrying amount	₩ 20,186
Discount rate	23.23%
Permanent growth rate	1.00%
PT Bank KB Bukopin TBK
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 85,893
Recoverable amount exceeded carrying amount	₩ 175,872
Discount rate	17.30%
Permanent growth rate	3.00%
PRASAC Microfinance Institution Plc.
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 388,524
Recoverable amount exceeded carrying amount	₩ 247,992
Discount rate	23.02%
Permanent growth rate	3.00%
PT Sunindo Kookmin Best Finance
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 2,894
Recoverable amount exceeded carrying amount	₩ 574
Discount rate	18.96%
Permanent growth rate	0.00%
PT. KB Finansia Multi Finance
Disclosure of information for cash-generating units [line items]
Carrying amounts of goodwill	₩ 52,772
Recoverable amount exceeded carrying amount	₩ 49,744
Discount rate	17.57%
Permanent growth rate	1.00%

Lease - Summary of Amounts Reco

Lease - Summary of Amounts Recognized in Consolidated Statement of Financial Position and Comprehensive Income (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of quantitative information about leases for lessee [Line Items]
Depreciation and amortization of right-of-use assets		₩ 602,908	₩ 423,684	₩ 247,374
Interest expense on the lease liabilities		14,678	13,492
Expense relating to short-term lease		5,920	6,169
Expense relating to lease of low-value assets that are not short-term lease		8,434	7,130
Expense relating to variable lease payments not included in lease liabilities (included in administrative expenses)		262	438
Cash outflow for lease		267,864	245,151
The amounts recognized in the consolidated statement of financial position
Disclosure of quantitative information about leases for lessee [Line Items]
Right-of-use assets		579,661	575,337
Lease liabilities	[1]	578,808	559,113
The amounts recognized in the consolidated statement of financial position | Right-of-use property and equipment
Disclosure of quantitative information about leases for lessee [Line Items]
Right-of-use assets	[1]	576,047	570,711
The amounts recognized in the consolidated statement of financial position | Real estate
Disclosure of quantitative information about leases for lessee [Line Items]
Right-of-use assets	[1]	544,075	537,392
The amounts recognized in the consolidated statement of financial position | Vehicles
Disclosure of quantitative information about leases for lessee [Line Items]
Right-of-use assets	[1]	18,416	16,218
The amounts recognized in the consolidated statement of financial position | Others
Disclosure of quantitative information about leases for lessee [Line Items]
Right-of-use assets	[1]	13,556	17,101
The amounts recognized in the consolidated statement of financial position | Right-of-use intangible assets
Disclosure of quantitative information about leases for lessee [Line Items]
Right-of-use assets	[1]	3,614	4,626
The amounts recognized in the consolidated statement of comprehensive income
Disclosure of quantitative information about leases for lessee [Line Items]
Depreciation and amortization of right-of-use assets		289,992	277,712
The amounts recognized in the consolidated statement of comprehensive income | Real estate
Disclosure of quantitative information about leases for lessee [Line Items]
Depreciation and amortization of right-of-use assets		262,240	246,058
The amounts recognized in the consolidated statement of comprehensive income | Vehicles
Disclosure of quantitative information about leases for lessee [Line Items]
Depreciation and amortization of right-of-use assets		17,796	15,286
The amounts recognized in the consolidated statement of comprehensive income | Others
Disclosure of quantitative information about leases for lessee [Line Items]
Depreciation and amortization of right-of-use assets		8,944	11,342
The amounts recognized in the consolidated statement of comprehensive income | Right-of-use intangible assets
Disclosure of quantitative information about leases for lessee [Line Items]
Depreciation and amortization of right-of-use assets		₩ 1,012	₩ 5,026
[1]	Included in property and equipment, intangible assets, and other liabilities.

Lease - Summary of the Finance

Lease - Summary of the Finance Lease as a Finance Lessor (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Finance Lease By Lessor [Abstract]
Total lease investment	₩ 1,367,825	₩ 1,538,093
Present value of minimum lease payments	919,658	906,365
Present value of Non-guaranteed residual value	349,478	496,969
Net lease investment	1,269,136	1,403,334
Unearned interest income	98,689	134,759
Disclosure Of Operating Lease By Lessor [Abstract]
Lessor Operating Lease Payments To Be Received	3,016,175	2,605,166
Up to 1 year
Disclosure Of Finance Lease By Lessor [Abstract]
Total lease investment	559,569	579,968
Present value of minimum lease payments	379,439	354,588
Disclosure Of Operating Lease By Lessor [Abstract]
Lessor Operating Lease Payments To Be Received	918,640	792,935
1~5 years
Disclosure Of Finance Lease By Lessor [Abstract]
Total lease investment	808,256	958,125
Present value of minimum lease payments	540,219	551,777
Disclosure Of Operating Lease By Lessor [Abstract]
Lessor Operating Lease Payments To Be Received	1,797,551	1,727,498
Over 5 years
Disclosure Of Operating Lease By Lessor [Abstract]
Lessor Operating Lease Payments To Be Received	₩ 299,984	₩ 84,733

Deferred Income Tax Assets an_3

Deferred Income Tax Assets and Liabilities - Summary of Deferred Income Tax Assets and Liabilities (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)		Dec. 31, 2020KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2019KRW (₩)
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		₩ 2,410,172		₩ 2,478,283
Total deferred income tax liabilities		(3,722,060)		(3,591,024)
Total deferred income tax liabilities (assets)		(1,311,888)		(1,112,741)
Offsetting Of Deferred Income Tax Assets And Liabilities [Abstract]
Offsetting Of Deferred Income Tax Assets		(2,251,079)		(2,413,225)
Offsetting Of Deferred Income Tax Liabilities		2,251,079		2,413,225
Net deferred tax assets and liabilities [abstract]
Total net deferred income tax assets		159,093		65,058	$ 134,199
Total net deferred income tax liabilities		(1,470,981)		(1,177,799)	$ (1,240,811)
Total net deferred income tax liabilities (assets)		(1,311,888)		(1,112,741)
Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised [Abstract]
Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised Investments In Subsidiaries And Others		372,410
Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised Others		107,067
Temporary Differences Associated With Investments In Subsidiaries Branches And Associates And Interests In Joint Ventures [Abstract]
Taxable Temporary Differences Associated With Investments In Subsidiaries Branches And Associates And Interests In Joint Ventures		404,147
Taxable Temporary Differences Associated With Business Combination		65,288
Allowances for credit losses
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		28,770		26,496
Total deferred income tax liabilities		(3,008)		(3,356)
Total deferred income tax liabilities (assets)		25,762		23,140
Impairment losses of property and equipment
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		9,198		3,992
Total deferred income tax liabilities		(1,833)		(1,889)
Total deferred income tax liabilities (assets)		7,365		2,103
Other provisions
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		178,027		149,259
Total deferred income tax liabilities		0		0
Total deferred income tax liabilities (assets)		178,027		149,259
Share based payments
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		24,249		17,718
Total deferred income tax liabilities		0		0
Total deferred income tax liabilities (assets)		24,249		17,718
Provisions for acceptances and guarantees
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		33,091		17,046
Total deferred income tax liabilities		0		0
Total deferred income tax liabilities (assets)		33,091		17,046
Gains or losses on valuation of derivatives
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		41,289		20,645
Total deferred income tax liabilities		(139,281)		(223,482)
Total deferred income tax liabilities (assets)		(97,992)		(202,837)
Present value discount
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		14,254		17,058
Total deferred income tax liabilities		(5,929)		(3,041)
Total deferred income tax liabilities (assets)		8,325		14,017
Deferred loan origination fees and costs
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		10,473		7,224
Total deferred income tax liabilities		(223,170)		(226,821)
Total deferred income tax liabilities (assets)		(212,697)		(219,597)
Gains or losses on fair value hedge
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		0		21,060
Total deferred income tax liabilities		(14,642)		0
Total deferred income tax liabilities (assets)		(14,642)		21,060
Accrued interest
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		0		0
Total deferred income tax liabilities		(140,852)		(125,835)
Total deferred income tax liabilities (assets)		(140,852)		(125,835)
Advnaced depreciation provision
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		0		0
Total deferred income tax liabilities		(1,703)		(1,703)
Total deferred income tax liabilities (assets)		(1,703)		(1,703)
Gains or losses on revaluation
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		0		338
Total deferred income tax liabilities		(318,539)		(319,698)
Total deferred income tax liabilities (assets)		(318,539)		(319,360)
Investments in subsidiaries and others
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		42,547		38,164
Total deferred income tax liabilities		(159,411)		(111,589)
Total deferred income tax liabilities (assets)		(116,864)		(73,425)
Gains or losses on valuation of security investment
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		104,168		73,857
Total deferred income tax liabilities		(1,192,004)		(1,232,689)
Total deferred income tax liabilities (assets)		(1,087,836)		(1,158,832)
Defined benefit liabilities
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		608,471		590,633
Total deferred income tax liabilities		0		0
Total deferred income tax liabilities (assets)		608,471		590,633
Accrued expenses
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		281,983		334,900
Total deferred income tax liabilities		0		0
Total deferred income tax liabilities (assets)		281,983		334,900
Derivative linked securities
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		2,241		78,202
Total deferred income tax liabilities		(46,895)		(30,881)
Total deferred income tax liabilities (assets)		(44,654)		47,321
Others
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		1,031,411	[1]	1,081,691
Total deferred income tax liabilities		(871,625)	[1]	(740,462)
Total deferred income tax liabilities (assets)		159,786	[1]	341,229
Gross Temporary Difference Unused Tax Losses And Unused Tax Credits [Member]
Deferred tax assets and liabilities [abstract]
Total deferred income tax liabilities		(3,722,060)
Retirement insurance expense
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		0		0
Total deferred income tax liabilities		(573,895)		(541,317)
Total deferred income tax liabilities (assets)		(573,895)		(541,317)
Adjustments to the prepaid contributions
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		0		0
Total deferred income tax liabilities		(29,273)		(28,261)
Total deferred income tax liabilities (assets)		(29,273)		(28,261)
Deductible temporary differences
Deferred tax assets and liabilities [abstract]
Total deferred income tax assets		2,410,172		2,478,283		₩ 1,703,764
The changes in cumulative temporary differences
Beginning		8,771,665		6,144,618
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		₩ 8,237,085		₩ 8,771,665
Tax rate		27.50%		27.50%
Deductible temporary differences | Allowances for credit losses
The changes in cumulative temporary differences
Beginning		₩ 93,749		₩ 2,018
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				105,505
Decrease		69,023		96,885
Increase		75,452		83,111
Ending		100,178		93,749
Deductible temporary differences | Impairment losses of property and equipment
The changes in cumulative temporary differences
Beginning		14,516		15,985
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		4,361		9,658
Increase		23,290		8,189
Ending		33,445		14,516
Deductible temporary differences | Other provisions
The changes in cumulative temporary differences
Beginning		544,705		424,383
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				6,383
Decrease		527,058		426,457
Increase		631,800		540,396
Ending		649,447		544,705
Deductible temporary differences | Share based payments
The changes in cumulative temporary differences
Beginning		62,085		63,092
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				5
Decrease		55,002		55,601
Increase		78,225		54,589
Ending		85,308		62,085
Deductible temporary differences | Provisions for acceptances and guarantees
The changes in cumulative temporary differences
Beginning		61,984		76,214
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		61,984		76,214
Increase		120,332		61,984
Ending		120,332		61,984
Deductible temporary differences | Gains or losses on valuation of derivatives
The changes in cumulative temporary differences
Beginning		76,238		186,035
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				5,201
Decrease		76,238		191,236
Increase		149,817		76,238
Ending		149,817		76,238
Deductible temporary differences | Present value discount
The changes in cumulative temporary differences
Beginning		62,029		29,978
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		61,783		29,732
Increase		51,586		61,783
Ending		51,832		62,029
Deductible temporary differences | Deferred loan origination fees and costs
The changes in cumulative temporary differences
Beginning		26,269		1,930
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				35,863
Decrease		13,719		15,098
Increase		25,536		3,574
Ending		38,086		26,269
Deductible temporary differences | Gains or losses on fair value hedge
The changes in cumulative temporary differences
Beginning		76,583		44,085
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		76,583		44,085
Increase		0		76,583
Ending		0		76,583
Deductible temporary differences | Investments in subsidiaries and others
The changes in cumulative temporary differences
Beginning		371,001		185,380
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		203,470		47,034
Increase		346,809		232,655
Ending		514,340		371,001
Deductible temporary differences | Gains or losses on valuation of security investment
The changes in cumulative temporary differences
Beginning		251,690		136,236
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		252,497		136,070
Increase		368,886		251,524
Ending		368,079		251,690
Deductible temporary differences | Defined benefit liabilities
The changes in cumulative temporary differences
Beginning		2,299,159		2,118,942
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				94,105
Decrease		315,719		227,010
Increase		393,189		313,122
Ending		2,376,629		2,299,159
Deductible temporary differences | Accrued expenses
The changes in cumulative temporary differences
Beginning		1,220,283		911,599
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				75,498
Decrease		1,220,283		911,599
Increase		1,026,651		1,144,785
Ending		1,026,651		1,220,283
Deductible temporary differences | Derivative linked securities
The changes in cumulative temporary differences
Beginning		284,370		477,307
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		284,370		477,307
Increase		8,147		284,370
Ending		8,147		284,370
Deductible temporary differences | Others
The changes in cumulative temporary differences
Beginning	[2]	3,648,764		1,669,025
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination	[2]			2,068,207
Decrease	[2]	554,628		1,170,462
Increase	[2]	100,539		1,081,994
Ending	[2]	3,194,675		3,648,764
Deductible temporary differences | Gross Temporary Difference Unused Tax Losses And Unused Tax Credits [Member]
The changes in cumulative temporary differences
Beginning		9,093,425		6,342,209
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				2,390,767
Decrease		3,776,718		3,914,448
Increase		3,400,259		4,274,897
Ending		8,716,966		9,093,425
Deductible temporary differences | Other provisions
The changes in cumulative temporary differences
Beginning		3,054		4,788
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		404		3,054
Deductible temporary differences | Investments in subsidiaries and others
The changes in cumulative temporary differences
Beginning		242,875		67,645
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		372,410		242,875
Deductible temporary differences | Others
The changes in cumulative temporary differences
Beginning		75,831		125,158
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		107,067		75,831
Taxable temporary differences
Deferred tax assets and liabilities [abstract]
Total deferred income tax liabilities		(3,591,024)		(3,591,024)		₩ (2,489,587)
The changes in cumulative temporary differences
Beginning		(12,981,620)		(8,999,893)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		₩ (13,355,239)		₩ (12,981,620)
Tax rate		27.50%		27.50%
Taxable temporary differences | Allowances for credit losses
The changes in cumulative temporary differences
Beginning		₩ (12,203)		₩ (11,877)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(12,203)		(11,877)
Increase		(10,939)		(12,203)
Ending		(10,939)		(12,203)
Taxable temporary differences | Impairment losses of property and equipment
The changes in cumulative temporary differences
Beginning		(3,935)		(4,163)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(204)		(111)
Increase		0		117
Ending		(3,731)		(3,935)
Taxable temporary differences | Gains or losses on valuation of derivatives
The changes in cumulative temporary differences
Beginning		(812,662)		(576,743)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(804,383)		(576,743)
Increase		(498,197)		(812,662)
Ending		(506,476)		(812,662)
Taxable temporary differences | Present value discount
The changes in cumulative temporary differences
Beginning		(10,916)		(15,278)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(10,916)		(15,278)
Increase		(21,469)		(10,916)
Ending		(21,469)		(10,916)
Taxable temporary differences | Deferred loan origination fees and costs
The changes in cumulative temporary differences
Beginning		(820,223)		(752,178)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(820,223)		(752,178)
Increase		(802,237)		(820,223)
Ending		(802,237)		(820,223)
Taxable temporary differences | Gains or losses on fair value hedge
The changes in cumulative temporary differences
Beginning		0
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Decrease		0
Increase		(53,243)
Ending		(53,243)		0
Taxable temporary differences | Accrued interest
The changes in cumulative temporary differences
Beginning		(457,626)		(401,337)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				(168,859)
Decrease		(442,101)		(394,255)
Increase		(496,663)		(281,685)
Ending		(512,188)		(457,626)
Taxable temporary differences | Advnaced depreciation provision
The changes in cumulative temporary differences
Beginning		(6,192)		(6,192)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		0		0
Increase		0		0
Ending		(6,192)		(6,192)
Taxable temporary differences | Gains or losses on revaluation
The changes in cumulative temporary differences
Beginning		(1,162,538)		(1,197,566)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(48,981)		(80,036)
Increase		(44,765)		(45,008)
Ending		(1,158,322)		(1,162,538)
Taxable temporary differences | Investments in subsidiaries and others
The changes in cumulative temporary differences
Beginning		(646,676)		(419,055)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(150,480)		(70,188)
Increase		(468,334)		(297,809)
Ending		(964,530)		(646,676)
Taxable temporary differences | Gains or losses on valuation of security investment
The changes in cumulative temporary differences
Beginning		(4,425,922)		(906,790)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				(3,060,750)
Decrease		(2,552,447)		(899,660)
Increase		(2,394,100)		(1,358,042)
Ending		(4,267,575)		(4,425,922)
Taxable temporary differences | Derivative linked securities
The changes in cumulative temporary differences
Beginning		(112,293)		(125,947)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(112,293)		(125,947)
Increase		(170,526)		(112,293)
Ending		(170,526)		(112,293)
Taxable temporary differences | Goodwill from merger
The changes in cumulative temporary differences
Beginning		(65,288)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Decrease		0
Increase		0
Ending		(65,288)		(65,288)
Taxable temporary differences | Others
The changes in cumulative temporary differences
Beginning	[2]	(2,706,386)		(2,793,848)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination	[2]			(1,613)
Decrease	[2]	(1,819,652)		(1,644,815)
Increase	[2]	(2,208,579)		(1,555,740)
Ending	[2]	(3,095,313)		(2,706,386)
Taxable temporary differences | Gross Temporary Difference Unused Tax Losses And Unused Tax Credits [Member]
The changes in cumulative temporary differences
Beginning		(13,308,689)		(9,135,264)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				(3,293,011)
Decrease		(7,105,435)		(4,817,114)
Increase		(7,621,866)		(5,697,528)
Ending		(13,825,120)		(13,308,689)
Taxable temporary differences | Goodwill arising from the merger
The changes in cumulative temporary differences
Beginning		(65,288)		(65,288)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease				0
Increase				0
Ending		(65,288)		(65,288)
Taxable temporary differences | Investments in subsidiaries and others
The changes in cumulative temporary differences
Beginning		(260,739)		(68,836)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		(404,147)		(260,739)
Taxable temporary differences | Others
The changes in cumulative temporary differences
Beginning		(1,042)		(1,247)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Ending		(446)		(1,042)
Taxable temporary differences | Retirement insurance expense
The changes in cumulative temporary differences
Beginning		(1,963,061)		(1,775,740)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				(61,789)
Decrease		(228,784)		(162,764)
Increase		(346,368)		(288,296)
Ending		(2,080,645)		(1,963,061)
Taxable temporary differences | Adjustments to the prepaid contributions
The changes in cumulative temporary differences
Beginning		(102,768)		(83,262)
Changes In Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Business combination				0
Decrease		(102,768)		(83,262)
Increase		(106,446)		(102,768)
Ending		₩ (106,446)		₩ (102,768)
[1]	Includes Purchase Price Allocation (“PPA”) amount arising from the acquisition of Prudential Life Insurance Company of Korea Ltd., KB Insurance Co., Ltd., and others.
[2]	Includes PPA amount arising from the acquisition of Prudential Life Insurance Company of Korea Ltd., KB Insurance Co., Ltd., and others.

Assets Held for Sale and Asse_3

Assets Held for Sale and Assets of a Disposal Group Held for Sale - Assets Held for Sale (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)	Dec. 31, 2021USD ($)
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		₩ 237,318	₩ 197,727	$ 200,184
Fair value less costs to sell		₩ 289,539	208,369
Changes In Accumulated Impairment Of Assets Held For Sale [Abstract]
Description of non-current asset or disposal group held for sale which were sold or reclassified		As of December 31, 2021, assets held for sale consist of 16 real estates of closed offices and 861 foreclosure assets on loans of PT Bank KB Bukopin Tbk, which were determined to sell by management, but not yet sold as of December 31, 2021. Negotiation with buyers is in process for the one closed office and the remaining 876 assets are also being actively marketed.
Acquisition cost
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount	[1]	₩ 296,133	243,842
Accumulated impairment losses
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		(58,815)	(46,115)
Changes In Accumulated Impairment Of Assets Held For Sale [Abstract]
Provision		(15,490)	(11,593)
Beginning		(46,115)	(2,782)
Reversal		0	0
Business combination			(45,433)
Disposal and others		2,790	13,693
Ending		(58,815)	(46,115)
Land held for sale
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		98,571	64,571
Fair value less costs to sell		135,192	68,321
Land held for sale | Acquisition cost
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount	[1]	115,099	80,740
Land held for sale | Accumulated impairment losses
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		(16,528)	(16,169)
Buildings held for sale
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		133,969	127,539
Fair value less costs to sell		149,569	134,247
Buildings held for sale | Acquisition cost
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount	[1]	170,892	152,426
Buildings held for sale | Accumulated impairment losses
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		(36,923)	(24,887)
Other assets held for sale
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		4,778	5,617
Fair value less costs to sell		4,778	5,801
Other assets held for sale | Acquisition cost
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount	[1]	10,142	10,676
Other assets held for sale | Accumulated impairment losses
Disclosure Of Assets Held For Sale [Line Items]
Carrying amount		₩ (5,364)	₩ (5,059)
[1]	Acquisition cost of buildings held for sale is net of accumulated depreciation amount immediately before the initial classification of the assets as held for sale.

Assets Held for Sale and Asse_4

Assets Held for Sale and Assets of a Disposal Group Held for Sale - Summary of Valuation Technique and Input Variables that are Used to Measure the fair Value of Assets Held for Sale (Details) - Land and buildings ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)
Disclosure Of Significant Unobservable Inputs Used In Fair Value Measurement Of Assests Held For Sale [Line Items]
Fair value	₩ 289,539
Unobservable input	Adjustment index	[1]
Range of unobservable inputs	0.68 ~ 1.95
Relationship of unobservable inputs to fair value	Fair value increases as the adjustment index rises
Description Of Valuation Processes Used In Fair Value Measurement Assets Held For Sale	Market comparison approach model and others	[2]
Description Of Assets Held For Sale Of Level Of Fair Value Hierarchy Within Which Fair Value Measurement Is Categorised	Among assets held for sale, real estate was measured by independent appraisers with professional qualifications and recent experience in evaluating similar properties in the area of the property to be assessed. All assets held for sale are classified as Level 3 in accordance with fair value hierarchy in Note 6.1.2.
[1]	Adjustment index is calculated using the time factor correction or local factors or individual factors.
[2]	The appraisal value is adjusted by the adjustment ratio in the event the public sale is unsuccessful.

Assets Held for Sale and Asse_5

Assets Held for Sale and Assets of a Disposal Group Held for Sale - Summary of Assets of Disposal Group Held for Sale (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	₩ 171,749	$ 144,875	₩ 0
498 Seventh Holdco LP
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	556
498 Seventh KOR LLC
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	171,193
Cash
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	1,068
Cash | 498 Seventh Holdco LP
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	556
Cash | 498 Seventh KOR LLC
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	512
Investments in associates
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	169,424
Investments in associates | 498 Seventh Holdco LP
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	0
Investments in associates | 498 Seventh KOR LLC
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	169,424
Other assets
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	1,257
Other assets | 498 Seventh Holdco LP
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	0
Other assets | 498 Seventh KOR LLC
Disclosure Of Details Of Assets Of A Disposal Group Held For Sale [Line Items]
Assets of a disposal group held for sale	₩ 1,257

Assets Held for Sale and Asse_6

Assets Held for Sale and Assets of a Disposal Group Held for Sale - Summary of Accumulated Other Comprehensive Income Relating to Assets (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure Of Accumulated Other Comprehensive Income Relating To Assets Of A Disposal Group Held For Sale [Line Items]
Accumulated other comprehensive income relating to assets of a disposal group held for sale	₩ 7,671	$ 6,471	₩ 0
Currency translation differences
Disclosure Of Accumulated Other Comprehensive Income Relating To Assets Of A Disposal Group Held For Sale [Line Items]
Accumulated other comprehensive income relating to assets of a disposal group held for sale	₩ 7,671

Assets Held for Sale and Asse_7

Assets Held for Sale and Assets of a Disposal Group Held for Sale - Additional Information (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)
Disclosure Of Assets Held For Sale [Abstract]
Impairment loss	₩ 0

Other Assets - Summary of Other

Other Assets - Summary of Other Assets (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)	Dec. 31, 2021USD ($)
Other Assets [Line Items]
Other assets	₩ 28,174,173	₩ 30,155,037	$ 23,765,646
Allowances for credit losses
Changes In Accumulated Impairment Of Other Assets [Abstract]
Beginning	137,282	128,864
Write-offs	(3,884)	(15,020)
Provision (reversal)	24,940	23,879
Others	812	(8,446)
Business combination	227	8,005
Ending	159,377	137,282
Other financial assets
Other Assets [Line Items]
Other assets	10,755,350	14,167,689
Other financial assets | Other receivables
Other Assets [Line Items]
Other assets	6,732,917	10,628,272
Other financial assets | Accrued income
Other Assets [Line Items]
Other assets	1,916,667	1,726,651
Other financial assets | Guarantee deposits
Other Assets [Line Items]
Other assets	1,035,522	1,099,618
Other financial assets | Domestic exchange settlement debits
Other Assets [Line Items]
Other assets	1,014,938	722,616
Other financial assets | Others
Other Assets [Line Items]
Other assets	204,940	117,330
Other financial assets | Allowances for credit losses
Other Assets [Line Items]
Other assets	(143,205)	(119,762)
Changes In Accumulated Impairment Of Other Assets [Abstract]
Beginning	119,762	104,629
Write-offs	(3,504)	(6,517)
Provision (reversal)	25,387	22,153
Others	1,333	(8,449)
Business combination	227	7,946
Ending	143,205	119,762
Other financial assets | Less Present value discount
Other Assets [Line Items]
Less: Present value discount	(6,429)	(7,036)
Other non financial assets
Other Assets [Line Items]
Other assets	17,418,823	15,987,348
Other non financial assets | Other receivables
Other Assets [Line Items]
Other assets	1,764	1,091
Other non financial assets | Prepaid expenses
Other Assets [Line Items]
Other assets	254,990	254,152
Other non financial assets | Guarantee deposits
Other Assets [Line Items]
Other assets	7,268	3,906
Other non financial assets | Insurance assets
Other Assets [Line Items]
Other assets	2,924,698	2,376,679
Other non financial assets | Separate account assets
Other Assets [Line Items]
Other assets	10,556,935	10,210,047
Other non financial assets | Others
Other Assets [Line Items]
Other assets	3,689,340	3,158,993
Other non financial assets | Allowances for credit losses
Other Assets [Line Items]
Less: Present value discount	(16,172)	(17,520)
Changes In Accumulated Impairment Of Other Assets [Abstract]
Beginning	17,520	24,235
Write-offs	(380)	(8,503)
Provision (reversal)	(447)	1,726
Others	(521)	3
Business combination	0	59
Ending	₩ 16,172	₩ 17,520

Financial Liabilities at Fair_3

Financial Liabilities at Fair Value Through Profit or Loss - Summary of Financial Liabilities At Fair Value Through Profit Or Loss (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure of financial liabilities [line items]
Financial liabilities at fair value through profit or loss	₩ 12,088,980	$ 10,197,368	₩ 11,810,058
Financial liabilities at fair value through profit or loss
Disclosure of financial liabilities [line items]
Financial liabilities at fair value through profit or loss	2,939,584		2,025,951
Securities sold
Disclosure of financial liabilities [line items]
Financial liabilities at fair value through profit or loss	2,826,885		1,934,735
Others
Disclosure of financial liabilities [line items]
Financial liabilities at fair value through profit or loss	112,699		91,216
Financial liabilities designated at fair value through profit or loss
Disclosure of financial liabilities [line items]
Financial liabilities at fair value through profit or loss	9,149,396		9,784,107
Derivative linked securities
Disclosure of financial liabilities [line items]
Financial liabilities at fair value through profit or loss	₩ 9,149,396		₩ 9,784,107

Financial Liabilities at Fair_4

Financial Liabilities at Fair Value Through Profit or Loss - Summary of Difference Between Carrying Amount And Contractually Required to Pay at Maturity Of Financial Liabilities Designated At Fair Value Through Profit Or Loss Explanatory (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure of financial liabilities [line items]
Carrying amount	₩ 12,088,980	$ 10,197,368	₩ 11,810,058
Financial liabilities designated at fair value through profit or loss
Disclosure of financial liabilities [line items]
Amount contractually required to pay at maturity	8,957,602		9,583,186
Carrying amount	9,149,396		9,784,107
Difference	₩ (191,794)		₩ (200,921)

Deposits - Summary of Deposits

Deposits - Summary of Deposits (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Disclosure Of Deposits From Customers [Line Items]
Deposits	₩ 372,023,918	$ 313,811,825	₩ 338,580,220
Demand deposits in Korean won
Disclosure Of Deposits From Customers [Line Items]
Deposits	180,560,022		162,155,728
Time deposits
Disclosure Of Deposits From Customers [Line Items]
Deposits	171,392,962		159,481,736
Demand deposits in foreign currencies
Disclosure Of Deposits From Customers [Line Items]
Deposits	15,955,246		14,473,832
Demand deposits
Disclosure Of Deposits From Customers [Line Items]
Deposits	196,515,268		176,629,560
Time deposits in foreign currencies
Disclosure Of Deposits From Customers [Line Items]
Deposits	15,594,718		10,043,679
Time Deposits In Korean Won
Disclosure Of Deposits From Customers [Line Items]
Deposits	155,799,563		149,435,968
Fair value adjustments of fair value hedged time deposits in foreign currencies
Disclosure Of Deposits From Customers [Line Items]
Fair value adjustments on valuation of fair value hedged items	(1,319)		2,089
Time deposits in foreign currencies net of fair value adjustments of fair value hedged time deposits
Disclosure Of Deposits From Customers [Line Items]
Deposits	15,593,399		10,045,768
Certificates of deposits
Disclosure Of Deposits From Customers [Line Items]
Deposits	₩ 4,115,688		₩ 2,468,924

Borrowings - Summary of Debt Se

Borrowings - Summary of Debt Securities Explanatory (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Borrowings [abstract]
General Borrowings	₩ 40,859,845		₩ 32,312,859
Bonds sold under repurchase agreements and others	14,374,863		16,334,365
Call money	1,677,666		1,179,932
Total	₩ 56,912,374	$ 48,007,064	₩ 49,827,156

Borrowings - Summary of Details

Borrowings - Summary of Details of Borrowings (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 40,859,845	₩ 32,312,859
SEMAS and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 2,683,056	2,675,568
SEMAS and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.00%
SEMAS and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	2.70%
Shinhan Bank and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 171,482	137,952
Shinhan Bank and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	1.70%
Shinhan Bank and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	5.30%
Borrowings in Korean won
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 25,214,222	21,197,871
The Bank of Korea
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 7,131,019	6,463,267
The Bank of Korea | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.25%
The Bank of Korea | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.25%
The Export-Import Bank of Korea and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 24,867	23,827
The Export-Import Bank of Korea and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.60%
The Export-Import Bank of Korea and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	1.36%
Central Bank of Uzbekistan and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 13,396,379	9,839,110
Central Bank of Uzbekistan and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.00%
Central Bank of Uzbekistan and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	13.50%
The Korea Development Bank and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 13,292,759	9,717,382
The Korea Development Bank and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.00%
The Korea Development Bank and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	4.90%
Korea Securities Finance Corporation and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 1,935,906	2,203,702
Korea Securities Finance Corporation and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.20%
Korea Securities Finance Corporation and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	4.74%
Bank of New York Mellon and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 2,222,234	1,251,759
Bank of New York Mellon and others | Bottom of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	0.00%
Bank of New York Mellon and others | Top of range [member]
Disclosure Of Detailed Information About General Borrowings [Line Items]
Annual interest rate	2.80%
Borrowings in foreign currencies
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 15,645,623	11,114,988
Hana Bank and others
Disclosure Of Detailed Information About General Borrowings [Line Items]
General Borrowings	₩ 2,143	₩ 292

Borrowings - Schedule of Repurc

Borrowings - Schedule of Repurchase Agreements (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Repurchase Agreements And Others	₩ 14,374,863	₩ 16,334,365
Individuals, groups and corporations
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Repurchase Agreements And Others	₩ 14,372,761	16,329,799
Individuals, groups and corporations | Bottom of range [member]
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Annual interest rate	0.00%
Individuals, groups and corporations | Top of range [member]
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Annual interest rate	9.75%
Counter sale
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Repurchase Agreements And Others	₩ 2,102	₩ 4,566
Counter sale | Bottom of range [member]
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Annual interest rate	0.20%
Counter sale | Top of range [member]
Disclosure Of Detailed Information About Repurchase Agreements And Others [Line Items]
Annual interest rate	2.00%

Borrowings - Summary of Detai_2

Borrowings - Summary of Details of Call Money (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Detailed Information About Call Money [Line Items]
Call money	₩ 1,677,666	₩ 1,179,932
The Export-Import Bank of Korea and others
Disclosure Of Detailed Information About Call Money [Line Items]
Call money	₩ 40,000	510,000
The Export-Import Bank of Korea and others | Bottom Of Range Member
Disclosure Of Detailed Information About Call Money [Line Items]
Annual interest rate	1.52%
The Export-Import Bank of Korea and others | Top Of Range Member
Disclosure Of Detailed Information About Call Money [Line Items]
Annual interest rate	1.52%
Bank Mandiri and others
Disclosure Of Detailed Information About Call Money [Line Items]
Call money	₩ 1,637,666	₩ 669,932
Bank Mandiri and others | Bottom Of Range Member
Disclosure Of Detailed Information About Call Money [Line Items]
Annual interest rate	0.00%
Bank Mandiri and others | Top Of Range Member
Disclosure Of Detailed Information About Call Money [Line Items]
Annual interest rate	4.25%

Debentures - Summary Of Detail

Debentures - Summary Of Details of Debentures (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)	Dec. 31, 2021USD ($)
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 67,430,188	₩ 62,760,687	$ 56,879,113
Debentures in Korean won
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		57,370,312	55,442,162
Korean Won Gross Carrying Amount [Member]
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		57,500,884	55,495,986
Structured debentures
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 910	1,960
Structured debentures | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		5.65%		5.65%
Structured debentures | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		8.62%		8.62%
Exchangeable bonds
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures	[1]	₩ 240,000	240,000
Exchangeable bonds | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate	[1]	0.00%		0.00%
Exchangeable bonds | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate	[1]	0.00%		0.00%
Subordinated fixed rate debentures
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 6,241,957	4,834,407
Subordinated fixed rate debentures | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		2.02%		2.02%
Subordinated fixed rate debentures | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		7.86%		7.86%
Fixed rate debentures
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 44,124,235	47,229,619
Fixed rate debentures | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		0.80%		0.80%
Fixed rate debentures | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		13.70%		13.70%
Floating rate debentures
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 6,893,782	3,190,000
Floating rate debentures | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		1.24%		1.24%
Floating rate debentures | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		2.57%		2.57%
Fair value adjustments of fair value hedged debentures in Korean won
Disclosure Of Detailed Information About Debentures [Line Items]
Gains (losses) on the hedged items attributable to the hedged risk		₩ (79,877)	(6,839)
Less Discount on debentures in Korean won
Disclosure Of Detailed Information About Debentures [Line Items]
Discount On Debentures		(38,976)	(32,028)
Less: Adjustment for exchange right of exchangeable bonds in Korean won
Disclosure Of Detailed Information About Debentures [Line Items]
Discount On Debentures		(11,719)	(14,957)
Debentures in foreign currencies
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		10,059,876	7,318,525
Foreign Currencies Gross Carrying Amount [Member]
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		10,062,140	7,263,518
Floating rate debentures
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 2,749,174	2,232,938
Floating rate debentures | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		0.37%		0.37%
Floating rate debentures | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		1.46%		1.46%
Fixed rate debentures
Disclosure Of Detailed Information About Debentures [Line Items]
Debentures		₩ 7,312,966	5,030,580
Fixed rate debentures | Bottom Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		0.05%		0.05%
Fixed rate debentures | Top Of Range Member
Disclosure Of Detailed Information About Debentures [Line Items]
Annual interest rate		12.00%		12.00%
Fair value adjustments of fair value hedged debentures in foreign currencies
Disclosure Of Detailed Information About Debentures [Line Items]
Gains (losses) on the hedged items attributable to the hedged risk		₩ 27,953	81,333
Less Discount on debentures in foreign currencies
Disclosure Of Detailed Information About Debentures [Line Items]
Discount On Debentures		₩ (30,217)	₩ (26,326)
[1]	Fair value of the liability component of exchangeable bonds is calculated by using market interest rate of bonds under the same conditions without the exchange right. The residual amount after deducting the liability component from the issuance amount, represents the value of the exchange right and is recorded in equity. Shares to be exchanged are 5 million treasury shares of KB Financial Group Inc. with the exchange price of ￦ 48,000. Exercise period for exchange right is from the 60th day of the issuance date to 10 days before the maturity date.

Debentures - Summary Of Details

Debentures - Summary Of Details of Debentures (Parenthetical) (Details) - Exchangeable Bonds [Member]	12 Months Ended
	Dec. 31, 2021KRW (₩)shares
Disclosure Of Detailed Information About Debentures [Line Items]
Exchangeable bonds, description of exercise period for exchange right	Exercise period for exchange right is from the 60th day of the issuance date to 10 days before the maturity date.
Treasury shares [member]
Disclosure Of Detailed Information About Debentures [Line Items]
Treasury shares, to be exchanged | shares	5,000,000
Treasury shares, Exchange price | ₩	₩ 48,000

Debentures - Summary Of Changes

Debentures - Summary Of Changes In Debentures Based on Face Value (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	₩ 62,759,504	₩ 50,918,458
Changes In Debentures Based On Face Value [Abstract]
Issues	121,795,971	119,810,529
Repayments	(117,509,585)	(107,760,800)
Business combination		277,087
Others	517,134	(485,770)
Ending	67,563,024	62,759,504
Debentures in Korean won
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	55,495,986	45,596,655
Changes In Debentures Based On Face Value [Abstract]
Issues	117,789,512	116,077,084
Repayments	(115,784,614)	(106,147,753)
Business combination		0
Others	0	(30,000)
Ending	57,500,884	55,495,986
Structured debentures
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	1,960	33,310
Changes In Debentures Based On Face Value [Abstract]
Issues	0	0
Repayments	(1,050)	(1,350)
Business combination		0
Others	0	(30,000)
Ending	910	1,960
Exchangeable bonds
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	240,000	0
Changes In Debentures Based On Face Value [Abstract]
Issues	0	240,000
Repayments	0	0
Business combination		0
Others	0	0
Ending	240,000	240,000
Subordinated fixed rate debentures
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	4,834,407	3,386,590
Changes In Debentures Based On Face Value [Abstract]
Issues	1,409,000	2,150,000
Repayments	(1,450)	(702,183)
Business combination		0
Others	0	0
Ending	6,241,957	4,834,407
Fixed rate debentures
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	47,229,619	40,596,755
Changes In Debentures Based On Face Value [Abstract]
Issues	110,295,448	111,677,084
Repayments	(113,400,832)	(105,044,220)
Business combination		0
Others	0	0
Ending	44,124,235	47,229,619
Floating rate debentures
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	3,190,000	1,580,000
Changes In Debentures Based On Face Value [Abstract]
Issues	6,085,064	2,010,000
Repayments	(2,381,282)	(400,000)
Business combination		0
Others	0	0
Ending	6,893,782	3,190,000
Debentures in foreign currencies
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	7,263,518	5,321,803
Changes In Debentures Based On Face Value [Abstract]
Issues	4,006,459	3,733,445
Repayments	(1,724,971)	(1,613,047)
Business combination		277,087
Others	517,134	(455,770)
Ending	10,062,140	7,263,518
Floating rate debentures
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	2,232,938	2,227,607
Changes In Debentures Based On Face Value [Abstract]
Issues	810,920	823,478
Repayments	(500,901)	(675,075)
Business combination		0
Others	206,217	(143,072)
Ending	2,749,174	2,232,938
Fixed rate debentures
Reconciliation Of Changes In Debentures Based On Face Value [Abstract]
Beginning	5,030,580	3,094,196
Changes In Debentures Based On Face Value [Abstract]
Issues	3,195,539	2,909,967
Repayments	(1,224,070)	(937,972)
Business combination		277,087
Others	310,917	(312,698)
Ending	₩ 7,312,966	₩ 5,030,580

Provisions - Summary of Other P

Provisions - Summary of Other Provisions (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)		Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Reconciliation of Changes In Other Provisions
Beginning		₩ 714,903
Transfer between stages:
Ending		808,604		$ 682,078	₩ 714,903
Provisions for credit losses of unused loan commitments
Reconciliation of Changes In Other Provisions
Beginning		298,753
Transfer between stages:
Ending		308,640			298,753
Provisions for credit losses of unused loan commitments | 12-month expected credit losses
Reconciliation of Changes In Other Provisions
Beginning		162,721	[1]		127,297
Transfer between stages:
Transfer To 12month Expected Credit Losses		38,831			23,318
Transfer To Lifetime Expected Credit Losses		(27,308)			(13,431)
Impairment		(457)			(304)
Increase					24,583
Reversal		(22,543)
Business combination		813			19,426
Others		1,940			(18,168)
Ending	[1]	153,997			162,721
Provisions for credit losses of unused loan commitments | Non-impaired
Reconciliation of Changes In Other Provisions
Beginning		127,463	[1]		71,464
Transfer between stages:
Transfer To 12month Expected Credit Losses		(37,595)			(21,694)
Transfer To Lifetime Expected Credit Losses		28,203			15,991
Impairment		(1,002)			(3,474)
Increase		29,145			65,449
Business combination		0			0
Others		405			(273)
Ending	[1]	146,619			127,463
Provisions for credit losses of unused loan commitments | Impaired
Reconciliation of Changes In Other Provisions
Beginning		8,569	[1]		9,387
Transfer between stages:
Transfer To 12month Expected Credit Losses		(1,236)			(1,624)
Transfer To Lifetime Expected Credit Losses		(895)			(2,560)
Impairment		1,459			3,778
Increase		127
Reversal					(412)
Business combination		0			0
Others		0			0
Ending	[1]	8,024			8,569
Provisions for credit losses of financial guarantee contracts
Reconciliation of Changes In Other Provisions
Beginning		6,348			6,063
Transfer between stages:
Increase					280
Reversal		(830)
Others		(167)			5
Ending		5,351			6,348
Provisions for credit losses of acceptances and guarantees
Reconciliation of Changes In Other Provisions
Beginning		62,254
Transfer between stages:
Ending		121,104			62,254
Provisions for credit losses of acceptances and guarantees | 12-month expected credit losses
Reconciliation of Changes In Other Provisions
Beginning		33,088	[1]		24,961
Transfer between stages:
Transfer To 12month Expected Credit Losses		3,958			194
Transfer To Lifetime Expected Credit Losses		(3,973)			(486)
Impairment		(10)			(5)
Increase					9,482
Reversal		(7,425)
Business combination		0			0
Others		1,759			(1,058)
Ending	[1]	27,397			33,088
Provisions for credit losses of acceptances and guarantees | Non-impaired
Reconciliation of Changes In Other Provisions
Beginning		14,838	[1]		36,012
Transfer between stages:
Transfer To 12month Expected Credit Losses		(203)			(191)
Transfer To Lifetime Expected Credit Losses		3,982			486
Impairment		(85)			(461)
Increase		64,178
Reversal					(20,389)
Business combination		0			0
Others		(540)			(619)
Ending	[1]	82,170			14,838
Provisions for credit losses of acceptances and guarantees | Impaired
Reconciliation of Changes In Other Provisions
Beginning		14,328	[1]		16,786
Transfer between stages:
Transfer To 12month Expected Credit Losses		(3,755)			(3)
Transfer To Lifetime Expected Credit Losses		(9)			0
Impairment		95			466
Increase		711
Reversal					(2,734)
Business combination		0			0
Others		167			(187)
Ending	[1]	11,537			14,328
Provisions for restoration costs
Reconciliation of Changes In Other Provisions
Beginning		151,696			120,340
Transfer between stages:
Increase		11,350			14,192
Reversal		(2,075)			(2,010)
Used		(15,739)			(9,469)
Unwinding of discount		1,589			2,372
Effect of changes in discount rate		5,365			23,886
Business combination		0			2,385
Ending		₩ 152,186			₩ 151,696
Description Of Nature Of Provisions For Restoration Cost		Provisions for restoration costs are the present value of estimated costs to be incurred for the restoration of the leased properties. The expenditure of the restoration cost will be incurred at the end of each lease contract,and the lease period is used to reasonably estimate the time of expenditure. Also, the average restoration expense based on actual three-year historical data and three-year historical average inflation rate are used to estimate the present value of estimated costs.		Provisions for restoration costs are the present value of estimated costs to be incurred for the restoration of the leased properties. The expenditure of the restoration cost will be incurred at the end of each lease contract,and the lease period is used to reasonably estimate the time of expenditure. Also, the average restoration expense based on actual three-year historical data and three-year historical average inflation rate are used to estimate the present value of estimated costs.	Provisions for restoration costs are the present value of estimated costs to be incurred for the restoration of the leased properties. The expenditure of the restoration cost will be incurred at the end of each lease contract,and the lease period is used to reasonably estimate the time of expenditure. Also, the average restoration expense based on actual three-year historical data and three-year historical average inflation rate are used to estimate the present value of estimated costs.
Total
Reconciliation of Changes In Other Provisions
Beginning		₩ 195,852			₩ 115,619
Transfer between stages:
Increase		171,455			187,292
Decrease		(146,161)			(112,383)
Business combination					5,324
Others		177
Ending		221,323			195,852
Total | Non-impaired
Reconciliation of Changes In Other Provisions
Beginning	[2]	195,852
Transfer between stages:
Increase	[2]	221,323
Ending	[2]				195,852
Membership rewards program
Reconciliation of Changes In Other Provisions
Beginning		19,501			14,669
Transfer between stages:
Increase		77,384			76,138
Decrease		(73,983)			(71,306)
Business combination					0
Others		0
Ending		22,902			19,501
Dormant accounts
Reconciliation of Changes In Other Provisions
Beginning		3,007			3,579
Transfer between stages:
Increase		3,429			2,607
Decrease		(3,374)			(3,179)
Business combination					0
Others		0
Ending		3,062			3,007
Litigations
Reconciliation of Changes In Other Provisions
Beginning		40,517			28,690
Transfer between stages:
Increase		18,670			19,186
Decrease		(4,190)			(9,725)
Business combination					2,366
Others		171
Ending		55,168			40,517
Others
Reconciliation of Changes In Other Provisions
Beginning		132,827			68,681
Transfer between stages:
Increase		71,972			89,361
Decrease		(64,614)			(28,173)
Business combination					2,958
Others		6
Ending		140,191			132,827
Provisions for industries and borrowers affected by COVID-19
Reconciliation of Changes In Other Provisions
Beginning		14,974
Transfer between stages:
Ending		15,664			14,974
Provision for lifetime expected credit losses (non-impaired)
Reconciliation of Changes In Other Provisions
Beginning		28,385
Transfer between stages:
Ending		₩ 33,393			₩ 28,385
[1]	Includes additional provisions of ￦ 14,974 million and ￦ 15,664 million for industries and borrowers which are highly affected by COVID-19 and ￦ 28,385 million and ￦ 33,393 million due to expanding the scope of the loans subject to lifetime expected credit losses (non-impaired) as of December 31, 2020 and 2021, respectively.
[2]	Includes provisions for redemption-suspended funds.

Net Defined Benefit Liabiliti_3

Net Defined Benefit Liabilities - Summary of Changes in the Net Defined Benefit Liabilities (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)		Dec. 31, 2020KRW (₩)		Dec. 31, 2019KRW (₩)	Dec. 31, 2021USD ($)
Disclosure of net defined benefit liability (asset) [line items]
Beginning	₩ 188,970	[1]	₩ 210,766
Changes in net defined benefit liability (asset) [abstract]
Current service cost	241,448		233,273		₩ 227,576
Past service cost	451		(16,197)
Gains on settlement	(4,311)		(1,912)		0
Interest expense (income)	2,921		4,743		5,545
Remeasurements:
Actuarial gains and losses by changes in demographic assumptions	27,611		(9,611)
Actuarial gains and losses by changes in financial assumptions	52,684		4,995
Actuarial gains and losses by experience adjustments	(24,592)		16,292
Return on plan assets (excluding amounts included in interest income)	9,438		6,308		11,116
Contributions by the Group	(319,601)		(268,918)
Contributions by the employees	(17,574)		(248)
Payments from plans (settlement)	(17)		0
Payments from plans (benefit payments)	(2)		(3,922)
Payments from the Group	(34,242)		(34,361)
Transfer in	562		646
Transfer out	0		0
Effect of exchange differences	1,623		(719)
Effect of business acquisition and disposal	21		47,809
Others	48		26
Ending	₩ 125,438	[1]	188,970	[1]	210,766
Description of type of plan	The Group has the obligation to pay the agreed benefits to all its current and former employees.
Description of risks to which plan exposes entity	The Group assumes actuarial risk (that benefits will cost more than expected) and investment risk.
Description of significant actuarial assumptions made and method used to calculate actuarial present value of promised retirement benefits	The net defined benefit liabilities recognized in the consolidated statement of financial position are calculated by the independent actuary in accordance with actuarial valuation method.
Net defined benefit liability (asset)	₩ 125,438		188,970
Net defined benefit asset	100,083		50,597			$ 84,423
Net defined benefit liability	225,521		239,567			$ 190,233
Present value of defined benefit obligation
Disclosure of net defined benefit liability (asset) [line items]
Beginning	2,491,923	[1]	2,299,476
Changes in net defined benefit liability (asset) [abstract]
Current service cost	241,448		233,273
Past service cost	451		(16,197)
Gains on settlement	(4,311)		(1,912)
Interest expense (income)	47,481		46,178
Remeasurements:
Actuarial gains and losses by changes in demographic assumptions	27,611		(9,611)
Actuarial gains and losses by changes in financial assumptions	52,684		4,995
Actuarial gains and losses by experience adjustments	(24,592)		16,292
Return on plan assets (excluding amounts included in interest income)	0		0
Contributions by the Group	0		0
Contributions by the employees	0		0
Payments from plans (settlement)	(6,961)		(8,162)
Payments from plans (benefit payments)	(221,276)		(148,468)
Payments from the Group	(34,242)		(34,361)
Transfer in	9,854		9,673
Transfer out	(9,292)		(8,635)
Effect of exchange differences	1,670		(724)
Effect of business acquisition and disposal	21		110,080
Others	48		26
Ending	2,572,517	[1]	2,491,923	[1]	2,299,476
Fair value of plan assets
Disclosure of net defined benefit liability (asset) [line items]
Beginning	(2,302,953)	[1]	(2,088,710)
Changes in net defined benefit liability (asset) [abstract]
Current service cost	0		0
Past service cost	0		0
Gains on settlement	0		0
Interest expense (income)	(44,560)		(41,435)
Remeasurements:
Actuarial gains and losses by changes in demographic assumptions	0		0
Actuarial gains and losses by changes in financial assumptions	0		0
Actuarial gains and losses by experience adjustments	0		0
Return on plan assets (excluding amounts included in interest income)	9,438		6,308
Contributions by the Group	(319,601)		(268,918)
Contributions by the employees	(17,574)		(248)
Payments from plans (settlement)	6,944		8,162
Payments from plans (benefit payments)	221,274		144,546
Payments from the Group	0		0
Transfer in	(9,292)		(9,027)
Transfer out	9,292		8,635
Effect of exchange differences	(47)		5
Effect of business acquisition and disposal	0		(62,271)
Others	0		0
Ending	₩ (2,447,079)	[1]	₩ (2,302,953)	[1]	₩ (2,088,710)
[1]	The net defined benefit liabilities of ￦ 188,970 million is calculated by subtracting ￦ 50,597 million of net defined benefit assets from ￦ 239,567 million of net defined benefit liabilities as of December 31, 2020. The net defined benefit liabilities of ￦ 125,438 million is calculated by subtracting ￦ 100,083 million of net defined benefit assets from ￦ 225,521 million of net defined benefit liabilities as of December 31, 2021.

Net Defined Benefit Liabiliti_4

Net Defined Benefit Liabilities - Summary of the Net Defined Benefit Liabilities (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Surplus (deficit) in plan [abstract]
Present value of defined benefit obligation	₩ 2,572,517		₩ 2,491,923
Fair value of plan assets	(2,447,079)		(2,302,953)
Net defined benefit liabilities	₩ 125,438	[1]	₩ 188,970	[1]	₩ 210,766
[1]	The net defined benefit liabilities of ￦ 188,970 million is calculated by subtracting ￦ 50,597 million of net defined benefit assets from ￦ 239,567 million of net defined benefit liabilities as of December 31, 2020. The net defined benefit liabilities of ￦ 125,438 million is calculated by subtracting ￦ 100,083 million of net defined benefit assets from ￦ 225,521 million of net defined benefit liabilities as of December 31, 2021.

Net Defined Benefit Liabiliti_5

Net Defined Benefit Liabilities - Summary of Post-Employment Benefits Recognized in Profit Or Loss (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Details Of Postemployment Benefits Recognized In Profit Or Loss [Abstract]
Current service cost		₩ 241,448	₩ 233,273	₩ 227,576
Past service cost		451	(16,197)	2,276
Net interest expense on net defined benefit liabilities		2,921	4,743	5,545
Gains on settlement		(4,311)	(1,912)	0
Post-employment benefits	[1]	240,509	219,907	235,397
Postemployment Benefit Expense Defined Benefit Plans Recognized As Other Operating Expense		₩ 3,194	2,840	2,575
Postemployment Benefit Expense Defined Benefit Plans Recognized As Prepayments			₩ 176	₩ 121
[1]	Includes post-employment benefits amounting to ￦ 2,575 million and￦ 2,840 million recognized as other operating expenses and ￦ 121 million and ￦ 176 million recognized as prepayment for the years ended December 31, 2019 and 2020, and post-employment benefits amounting to ￦ 3,194 million recognized as other operating expenses for the year ended December 31, 2021.

Net Defined Benefit Liabiliti_6

Net Defined Benefit Liabilities - Summary of Remeasurements of the Net Defined Benefit Liabilities Recognized in Other Comprehensive Income (Loss) (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Remeasurement Of Net Defined Benefit Liability Asset Recognized As Other Comprehensive Income [Abstract]
Return on plan assets (excluding amounts included in interest income)	₩ (9,438)		₩ (6,308)	₩ (11,116)
Actuarial gains and losses	(55,703)		(11,676)	(64,083)
Income tax effect	18,638		4,949	20,676
Effect of exchange differences	993		(399)	0
Remeasurements after income tax expense	₩ (45,510)	$ (38,389)	₩ (13,434)	₩ (54,523)

Net Defined Benefit Liabiliti_7

Net Defined Benefit Liabilities - Summary of the Fair Value of Plan Assets (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Details Of Fair Value Of Plan Assets [Abstract]
Cash and due from financial institutions	₩ 2,441,324	₩ 2,299,500
Derivative instruments	3,427	1,930
Investment fund	2,328	1,523
Total	2,447,079	2,302,953
Assets quoted in an active market
Details Of Fair Value Of Plan Assets [Abstract]
Cash and due from financial institutions	0	0
Derivative instruments	0	0
Investment fund	0	0
Total	0	0
Assets not quoted in an active market
Details Of Fair Value Of Plan Assets [Abstract]
Cash and due from financial institutions	2,441,324	2,299,500
Derivative instruments	3,427	1,930
Investment fund	2,328	1,523
Total	₩ 2,447,079	₩ 2,302,953

Net Defined Benefit Liabiliti_8

Net Defined Benefit Liabilities - Summary of Significant Actuarial Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Actuarial Assumptions [Line Items]
Description Of Actuarial Assumption Of Mortality Rates	Mortality assumptions are based on the experience-based mortality table issued by Korea Insurance Development Institute in 2019.
Bottom of range [member]
Disclosure Of Actuarial Assumptions [Line Items]
Discount rate	1.80%	0.90%
Salary increase rate	0.00%	0.00%
Turnover rate	0.00%	0.00%
Top of range [member]
Disclosure Of Actuarial Assumptions [Line Items]
Discount rate	2.70%	2.00%
Salary increase rate	7.50%	7.50%
Turnover rate	50.00%	50.00%

Net Defined Benefit Liabiliti_9

Net Defined Benefit Liabilities - Summary of Sensitivity Analysis of Significant Actuarial Assumptions (Details) - Weighted average [member]	12 Months Ended
	Dec. 31, 2021
Effect on net defined benefit obligation
Description of methods and assumptions used in preparing sensitivity analysis for actuarial assumptions	The above sensitivity analysis is based on a change in an assumption while holding all other assumptions constant. In practice, this is unlikely to occur, and changes in some of the assumptions may be correlated. The sensitivity of the defined benefit obligation to changes in significant actuarial assumptions is calculated using the same projected unit credit method used in calculating the defined benefit obligation recognized in the consolidated statement of financial position.
Discount rate
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Changes In Assumption	0.5 p.
Effect on net defined benefit obligation
Increase in assumption	4.24%
Decrease in assumption	4.56%
Salary increase rate
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Changes In Assumption	0.5 p.
Effect on net defined benefit obligation
Increase in assumption	4.27%
Decrease in assumption	4.02%
Turnover
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Changes In Assumption	0.5 p.
Effect on net defined benefit obligation
Increase in assumption	0.37%
Decrease in assumption	0.38%

Net Defined Benefit Liabilit_10

Net Defined Benefit Liabilities - Summary of Expected Maturity Analysis of Undiscounted Pension Benefit Payments Including Expected Future Benefit (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)
Disclosure Of Expected Maturity Analysis [Line Items]
Pension benefits	₩ 7,701,644	[1]
Description of undiscounted pension benefits including expected future benefits	Amount determined under the promotion compensation type defined contribution plan is excluded.
Expected contribution to plan assets	₩ 224,658
Bottom of range [member]
Disclosure Of Expected Maturity Analysis [Line Items]
Weighted average duration of defined benefit obligation	1 year
Top of range [member]
Disclosure Of Expected Maturity Analysis [Line Items]
Weighted average duration of defined benefit obligation	11 years
Up to 1 year
Disclosure Of Expected Maturity Analysis [Line Items]
Pension benefits	₩ 89,554	[1]
1~2 years
Disclosure Of Expected Maturity Analysis [Line Items]
Pension benefits	177,777	[1]
2~5 years
Disclosure Of Expected Maturity Analysis [Line Items]
Pension benefits	709,744	[1]
5~10 years
Disclosure Of Expected Maturity Analysis [Line Items]
Pension benefits	1,466,517	[1]
Over 10 years
Disclosure Of Expected Maturity Analysis [Line Items]
Pension benefits	₩ 5,258,052	[1]
[1]	Amount determined under the promotion compensation type defined contribution plan is excluded.

Other Liabilities - Summary of

Other Liabilities - Summary of Accrued Expenses and Other Liabilities Explanatory (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Other Liabilities [Line Items]
Other liabilities	₩ 43,130,482	$ 36,381,680	₩ 41,804,023
Other financial liabilities
Other Liabilities [Line Items]
Other liabilities	29,494,402		28,612,288
Other payables
Other Liabilities [Line Items]
Other liabilities	11,175,682		14,247,067
Prepaid card and debit card payables
Other Liabilities [Line Items]
Other liabilities	33,972		31,184
Accrued expenses
Other Liabilities [Line Items]
Other liabilities	2,620,819		2,787,360
Financial guarantee contracts
Other Liabilities [Line Items]
Other liabilities	52,603		49,286
Deposits for letter of guarantees and others
Other Liabilities [Line Items]
Other liabilities	1,093,680		1,103,876
Domestic exchange settlement credits
Other Liabilities [Line Items]
Other liabilities	5,125,430		938,039
Foreign exchange settlement credits
Other Liabilities [Line Items]
Other liabilities	169,264		134,678
Due to trust accounts
Other Liabilities [Line Items]
Other liabilities	7,033,849		7,542,955
Liability incurred from agency relationships
Other Liabilities [Line Items]
Other liabilities	739,276		765,844
Account for agency businesses
Other Liabilities [Line Items]
Other liabilities	423,798		400,507
Dividend payables
Other Liabilities [Line Items]
Other liabilities	474		478
Lease liabilities
Other Liabilities [Line Items]
Other liabilities	578,808		559,113
Others
Other Liabilities [Line Items]
Other liabilities	446,747		51,901
Other non-financial liabilities
Other Liabilities [Line Items]
Other liabilities	13,636,080		13,191,735
Other payables
Other Liabilities [Line Items]
Other liabilities	348,003		386,094
Unearned revenue
Other Liabilities [Line Items]
Other liabilities	656,375		669,908
Accrued expenses
Other Liabilities [Line Items]
Other liabilities	956,461		815,941
Deferred revenue on credit card points
Other Liabilities [Line Items]
Other liabilities	214,053		211,815
Withholding taxes
Other Liabilities [Line Items]
Other liabilities	164,333		180,092
Separate account liabilities
Other Liabilities [Line Items]
Other liabilities	11,071,159		10,701,404
Others
Other Liabilities [Line Items]
Other liabilities	₩ 225,696		₩ 226,481

Equity - Summary of Issued Capi

Equity - Summary of Issued Capital (Details) ₩ / shares in Units, $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)₩ / sharesshares	Dec. 31, 2020KRW (₩)₩ / sharesshares	Dec. 31, 2021USD ($)shares	Dec. 31, 2019shares
Type of share
Number of authorized shares	1,000,000,000	1,000,000,000	1,000,000,000
Share capital	₩ 2,090,558	₩ 2,090,558	$ 1,763,440
Ordinary shares
Type of share
Number of authorized shares	1,000,000,000	1,000,000,000	1,000,000,000
Par value per share | ₩ / shares	₩ 5,000	₩ 5,000
Number of issued shares	415,807,920	415,807,920	415,807,920	415,807,920
Share capital | ₩	₩ 2,090,558	₩ 2,090,558
Reconciliation of number of shares outstanding [abstract]
Beginning	389,634,335	389,634,335
Changes in number of shares outstanding [abstract]
Increase	0	0
Decrease	0	0
Ending	389,634,335	389,634,335

Equity - Summary of Hybrid Secu

Equity - Summary of Hybrid Securities (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Hybrid Securities [line Items]
Hybrid securities	₩ 2,838,221	$ 2,394,113	₩ 1,695,988
Description Of Detailed Information About Hybrid Securities Explanatory [Text Block]	On the other hand, hybrid securities of ￦ 574,580 million issued by Kookmin Bank are recognized as non-controlling
Hybrid Instrument
Hybrid Securities [line Items]
Hybrid securities	₩ 2,838,221		1,695,988
Description Of Detailed Information About Hybrid Securities Explanatory [Text Block]	The above hybrid securities are early redeemable by the Group after 5 or 7 or 10 years from the issuance date.
The 1-1st Hybrid Securities
Hybrid Securities [line Items]
Issuance date	May 2, 2019
Maturity	Perpetual bond
Interest Rate	3.23%	3.23%
Hybrid securities	₩ 349,309		349,309
The 1-2nd Hybrid securities
Hybrid Securities [line Items]
Issuance date	May 2, 2019
Maturity	Perpetual bond
Interest Rate	3.44%	3.44%
Hybrid securities	₩ 49,896		49,896
The 2-1st Hybrid securities
Hybrid Securities [line Items]
Issuance date	May 8, 2020
Maturity	Perpetual bond
Interest Rate	3.30%	3.30%
Hybrid securities	₩ 324,099		324,099
The 2-2nd Hybrid securities
Hybrid Securities [line Items]
Issuance date	May 8, 2020
Maturity	Perpetual bond
Interest Rate	3.43%	3.43%
Hybrid securities	₩ 74,812		74,812
The 3-1st Hybrid securities
Hybrid Securities [line Items]
Issuance date	Jul. 14, 2020
Maturity	Perpetual bond
Interest Rate	3.17%	3.17%
Hybrid securities	₩ 369,099		369,099
The 3-2nd Hybrid securities
Hybrid Securities [line Items]
Issuance date	Jul. 14, 2020
Maturity	Perpetual bond
Interest Rate	3.38%	3.38%
Hybrid securities	₩ 29,922		29,922
The 4-1st Hybrid securities
Hybrid Securities [line Items]
Issuance date	Oct. 20, 2020
Maturity	Perpetual bond
Interest Rate	3.00%	3.00%
Hybrid securities	₩ 433,996		433,996
The 4-2nd Hybrid securities
Hybrid Securities [line Items]
Issuance date	Oct. 20, 2020
Maturity	Perpetual bond
Interest Rate	3.28%	3.28%
Hybrid securities	₩ 64,855		64,855
The 5-1st Hybrid Securities
Hybrid Securities [line Items]
Issuance date	Feb. 19, 2021
Maturity	Perpetual bond
Interest Rate	2.67%	2.67%
Hybrid securities	₩ 0		419,071
The 5-2nd Hybrid Securities
Hybrid Securities [line Items]
Issuance date	Feb. 19, 2021
Maturity	Perpetual bond
Interest Rate	2.87%	2.87%
Hybrid securities	₩ 0		59,862
The 5-3rd Hybrid Securities
Hybrid Securities [line Items]
Issuance date	Feb. 19, 2021
Maturity	Perpetual bond
Interest Rate	3.28%	3.28%
Hybrid securities	₩ 0		119,727
The 6 -1st Hybrid Securities
Hybrid Securities [line Items]
Issuance date	May 28, 2021
Maturity	Perpetual bond
Interest Rate	3.20%	3.20%
Hybrid securities	₩ 0		165,563
The 6-2nd Hybrid Securities
Hybrid Securities [line Items]
Issuance date	May 28, 2021
Maturity	Perpetual bond
Interest Rate	3.60%	3.60%
Hybrid securities	₩ 0		109,708
The 7-1st Hybrid Securities
Hybrid Securities [line Items]
Issuance date	Oct. 8, 2021
Maturity	Perpetual bond
Interest Rate	3.57%	3.57%
Hybrid securities	₩ 208,468		0
The 7-2nd Hybrid Securities
Hybrid Securities [line Items]
Issuance date	Oct. 8, 2021
Maturity	Perpetual bond
Interest Rate	3.80%	3.80%
Hybrid securities	₩ 59,834		₩ 0

Equity - Summary of Reserves an

Equity - Summary of Reserves and Other Equity Interest (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Miscellaneous equity [abstract]
Paid-in capital in excess of par value	₩ 13,190,274		₩ 13,190,274
Losses on sales of treasury shares	(481,332)		(481,332)
Other capital surplus	4,219,356		4,002,714
Consideration for exchange right of exchangeable bonds	11,933		11,933
Total	₩ 16,940,231	$ 14,289,524	₩ 16,723,589

Equity - Schedule of Accumulate

Equity - Schedule of Accumulated Other Comprehensive Income Loss (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Disclosure of classes of share capital [abstract]
Remeasurements of net defined benefit liabilities	₩ (328,392)		₩ (282,650)
Currency translation differences	96,534		(131,113)
Gains on financial instruments at fair value through other comprehensive income	918,927		717,230
Share of other comprehensive loss of associates and joint ventures	(2,980)		(3,529)
Losses on cash flow hedging instruments	(7,733)		(28,597)
Gains (losses) on hedging instruments of net investments in foreign operations	(35,658)		22,277
Other comprehensive income (loss) arising from separate account	(55,116)		8,698
Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk	2,208		(11,507)
Gains on overlay adjustment	459,484		339,202
Assets of a disposal group held for sale	7,671	$ 6,471	0
Total	₩ 1,054,945		₩ 630,011	₩ 368,744

Equity - Schedule of Appropriat

Equity - Schedule of Appropriated and Unappropriated Retained Earnings (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)	Dec. 31, 2021USD ($)
Retained earnings [abstract]
Legal reserves	[1]	₩ 695,347	₩ 557,405
Voluntary reserves		982,000	982,000
Unappropriated retained earnings	[2]	23,995,468	21,001,211
Total		25,672,815	₩ 22,540,616	$ 21,655,685
Retained Earnings Restricted For Dividend At Subsidiaries Level Pursuant To Law And Regulations		₩ 4,116,579
Description Of Nature And Purpose Of Legal Reserves Within Equity		With respect to the allocation of net profit earned in a fiscal term, the Parent Company must set aside in its legal reserve an amount equal to at least 10% of its profit after tax as reported in the financial statements, each time it pays dividends on its net profits earned until its legal reserve reaches the aggregate amount of its paid-in capital in accordance with Article 53 of the Financial Holding Company Act. This reserve is not available for the payment of cash dividends, but may be transferred to share capital, or used to reduce accumulated deficit.	With respect to the allocation of net profit earned in a fiscal term, the Parent Company must set aside in its legal reserve an amount equal to at least 10% of its profit after tax as reported in the financial statements, each time it pays dividends on its net profits earned until its legal reserve reaches the aggregate amount of its paid-in capital in accordance with Article 53 of the Financial Holding Company Act. This reserve is not available for the payment of cash dividends, but may be transferred to share capital, or used to reduce accumulated deficit.
[1]	With respect to the allocation of net profit earned in a fiscal term, the Parent Company must set aside in its legal reserve an amount equal to at least 10% of its profit after tax as reported in the financial statements, each time it pays dividends on its net profits earned until its legal reserve reaches the aggregate amount of its paid-in capital in accordance with Article 53 of the Financial Holding Company Act. This reserve is not available for the payment of cash dividends, but may be transferred to share capital, or used to reduce accumulated deficit.
[2]	Retained earnings restricted for dividend at subsidiaries level pursuant to laws and regulations amounts to ￦ 4,116,579 million as of December 31, 2021.

Equity - Summary of Treasury Sh

Equity - Summary of Treasury Shares (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)shares	Dec. 31, 2021USD ($)shares	Dec. 31, 2020KRW (₩)shares
Number of treasury shares
Beginning | shares	[1]	26,173,585	26,173,585	26,173,585
Changes In Treasury Share Number [abstract]
Ending | shares	[1]			26,173,585
Carrying amount
Beginning		₩ 1,136,188
Changes In Treasury Share Amount [abstract]
Ending		₩ 1,136,188	$ 958,404	₩ 1,136,188
Treasury shares [member]
Number of treasury shares
Beginning | shares	[1]	26,173,585	26,173,585
Changes In Treasury Share Number [abstract]
Acquisition | shares	[1]	0	0	0
Disposal	[1]	₩ 0		₩ 0
Ending | shares	[1]	26,173,585	26,173,585	26,173,585
Deposited at the Korea Securities Depository for issuing exchangeable bonds		₩ 5
Carrying amount
Beginning		1,136,188		₩ 1,136,188
Changes In Treasury Share Amount [abstract]
Acquisition		0		0
Disposal		0		0
Ending		₩ 1,136,188		₩ 1,136,188
[1]	5 million treasury shares are deposited at the Korea Securities Depository for the exchange of exchangeable bonds.

Net Interest Income - Summary o

Net Interest Income - Summary of Interest Income, Interest Expense and Net Interest Income (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Interest income
Due from financial institutions measured at fair value through profit or loss	₩ 1,723		₩ 649	₩ 2,685
Securities measured at fair value through profit or loss	579,128		647,840	668,377
Loans measured at fair value through profit or loss	9,537		10,876	33,001
Securities measured at fair value through other comprehensive income	784,980		719,434	774,864
Loans measured at fair value through other comprehensive income	4,618		7,899	14,708
Due from financial institutions measured at amortized cost	66,375		92,155	150,635
Securities measured at amortized cost	765,656		627,201	599,519
Loans measured at amortized cost	12,745,780		12,177,822	12,247,493
Other	253,081		201,871	147,905
Interest income	15,210,878	$ 12,830,770	14,485,747	14,639,187
Interest expenses
Deposits	2,218,556		2,916,794	3,481,121
Borrowings	510,385		572,946	596,425
Debentures	1,169,708		1,186,310	1,240,566
Other	82,657		87,423	124,288
Sub-total	3,981,306	3,358,335	4,763,473	5,442,400
Net interest income	₩ 11,229,572	$ 9,472,435	₩ 9,722,274	₩ 9,196,787

Net Interest Income - Summary_2

Net Interest Income - Summary of Interest Income Recognized on Impaired Loans (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans and Receivables Category [member]
Disclosure Of Financial Instruments Line Items [Line Items]
Interest income recognized on impaired loans	₩ 52,638	₩ 56,606	₩ 54,033

Net Fee and Commission Income -

Net Fee and Commission Income - Schedule of Details of Fee and Commission Income and Expense (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Fee and commission income
Banking activity fees		₩ 178,412		₩ 189,100	₩ 214,512
Lending activity fees		82,184		91,663	83,916
Credit card and debit card related fees		1,526,911		1,378,450	1,316,636
Agent activity fees		205,206		196,518	172,211
Trust and other fiduciary fees		408,834		331,827	388,352
Fund management related fees		178,090		154,612	153,798
Acceptances and guarantees fees		49,782		54,108	48,122
Foreign currency related fees		245,299		173,313	134,145
Securities agency fees		174,709		172,097	145,846
Other business account commission on consignment		39,178		40,461	36,813
Commissions received on securities business		881,407		793,278	445,987
Lease fees		897,983		636,301	428,195
Others		455,611		315,296	310,714
Sub-total		5,323,606	$ 4,490,600	4,527,024	3,879,247
Fee and commission expense
Trading activity related fees	[1]	54,857		38,497	28,869
Lending activity fees		42,981		33,444	26,040
Credit card and debit card related fees		831,724		848,823	892,391
Outsourcing related fees		210,480		216,962	190,312
Foreign currency related fees		51,931		49,435	42,902
Other		506,050		380,924	343,729
Sub-total		1,698,023	1,432,327	1,568,085	1,524,243
Net fee and commission income		₩ 3,625,583	$ 3,058,273	₩ 2,958,939	₩ 2,355,004
[1]	Fees from financial instruments at fair value through profit or loss

Net Gains or Losses on Financ_3

Net Gains or Losses on Financial Instruments at Fair Value through Profit or Loss - Summary of Net Gains Or Losses On Financial Instruments At Fair Value Through Profit Or Loss (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	₩ 16,722,182	₩ 16,869,982	₩ 12,914,689
Losses on financial instruments at fair value through profit or loss	15,695,821	15,369,373	10,872,846
Net gains on financial instruments at fair value through profit or loss	1,026,361	1,500,609	2,041,843
Derivatives held for trading
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	14,104,909	14,054,556	10,819,536
Losses on financial instruments at fair value through profit or loss	13,900,801	13,731,191	9,703,974
Debt securities
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	1,804,112	2,061,505	1,613,946
Losses on financial instruments at fair value through profit or loss	1,280,960	1,040,285	752,999
Equity securities
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	733,823	725,072	428,646
Losses on financial instruments at fair value through profit or loss	426,431	444,554	315,743
Currency
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	7,492,806	8,335,594	5,251,597
Losses on financial instruments at fair value through profit or loss	7,422,604	8,191,456	5,118,095
Swaps
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	4,820,712	2,632,246	2,685,998
Losses on financial instruments at fair value through profit or loss	4,669,893	2,687,114	2,758,205
Stock or stock index
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	1,603,501	2,808,284	2,612,422
Losses on financial instruments at fair value through profit or loss	1,604,027	2,558,205	1,585,086
Credit
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	20,147	28,434	41,548
Losses on financial instruments at fair value through profit or loss	14,051	19,213	42,172
Commodity
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	21,864	18,097	15,240
Losses on financial instruments at fair value through profit or loss	14,815	21,797	9,437
Others
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	145,879	231,901	212,731
Losses on financial instruments at fair value through profit or loss	175,411	253,406	190,979
Financial liabilties held for trading
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	72,585	28,160	46,750
Losses on financial instruments at fair value through profit or loss	80,790	153,227	94,426
Financial assets at fair value through profit or loss
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	2,537,935	2,786,577	2,042,592
Losses on financial instruments at fair value through profit or loss	1,707,391	1,484,839	1,068,742
Other financial instruments
Gains losses on financial instruments at fair value through profit or loss Abstract [Abstract]
Gains on financial instruments at fair value through profit or loss	6,753	689	5,811
Losses on financial instruments at fair value through profit or loss	₩ 6,839	₩ 116	₩ 5,704

Net Gains or Losses on Financ_4

Net Gains or Losses on Financial Instruments at Fair Value through Profit or Loss - Summary of Net Gains Or Losses On Financial Instruments Designated At Fair Value Through Profit Or Loss (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net gains or losses on financial instruments held for trading [Line Items]
Gains on financial instruments designated at fair value through profit or loss	₩ 623,929	₩ 654,045	₩ 555,749
Losses on financial instruments designated at fair value through profit or loss	654,986	1,143,288	1,953,720
Net losses on financial instruments designated at fair value through profit or loss	(31,057)	(489,243)	(1,397,971)
Financial liabilities designated at fair value through profit or loss
Net gains or losses on financial instruments held for trading [Line Items]
Gains on financial instruments designated at fair value through profit or loss	623,929	654,045	555,749
Losses on financial instruments designated at fair value through profit or loss	₩ 654,986	₩ 1,143,288	₩ 1,953,720

Net Other Operating Income an_3

Net Other Operating Income and Expenses - Summary of Other Operating Income and Expense (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Gains on financial instruments at fair value through other comprehensive income:
Gains on redemption of financial instruments at fair value through other comprehensive income	₩ 2		₩ 351	₩ 796
Gains on disposal of financial instruments at fair value through other comprehensive income	126,710		304,217	222,371
Sub-total	126,712		304,568	223,167
Gains on financial assets at amortized cost:
Gains on sale of loans measured at amortized cost	136,620		180,038	80,746
Gains on redemption of securities measured at amortized cost	126		0	0
Gains on disposal of securities measured at amortized cost	41		229	0
Sub-total	136,787		180,267	80,746
Gains on loans measured at fair value through other comprehensive income:
Gains on sale of loans measured at fair value through other comprehensive income	226		0	0
Sub-total	226		0	0
Gain on foreign exchange transactions	3,878,089		3,634,987	2,183,703
Dividend income	33,805		45,125	54,768
Others	753,575		591,798	321,244
Other Operating Income	4,929,194		4,756,745	2,863,628
Losses on financial instruments at fair value through other comprehensive income:
Losses on redemption of financial instruments at fair value through other comprehensive income	2,172		320	0
Losses on disposal of financial instruments at fair value through other comprehensive income	222,512		19,159	16,975
Sub-total	224,684		19,479	16,975
Losses on financial assets at amortized cost:
Losses on sale of loans measured at amortized cost	14,669		16,061	19,439
Losses on redemption of securities measured at amortized cost	6		0	0
Losses on disposal of securities measured at amortized cost	2		6,513	0
Sub-total	14,677		22,574	19,439
Losses on foreign exchange transactions	3,570,783		3,530,618	1,970,294
Deposit insurance fee	550,677		507,621	469,015
Credit guarantee fund fee	263,297		242,216	213,911
Depreciation expenses of operating lease assets	602,908		423,684	247,374
Others	1,625,735		1,510,483	989,944
Total other operating expenses	6,852,761		6,256,675	3,926,952
Net other operating expenses	₩ (1,923,567)	$ (1,622,579)	₩ (1,499,930)	₩ (1,063,324)

General and Administrative Ex_3

General and Administrative Expenses - Summary of General and Administrative Expenses (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Expenses related to employee
Employee benefits—salaries	₩ 3,007,439		₩ 2,789,201	₩ 2,557,821
Employee benefits—others	927,665		871,014	848,421
Post-employment benefits - defined benefit plans	237,315		216,891	232,701
Post-employment benefits - defined contribution plans	37,731		37,328	27,924
Termination benefits	322,970		361,098	239,790
Share-based payments	101,935		49,364	49,418
Sub-total	4,635,055		4,324,896	3,956,075
Depreciation and amortization	850,614		874,911	784,431
Other general and administrative expenses
Rental expense	112,902		116,325	109,745
Tax and dues	268,383		260,071	238,670
Communication	60,221		53,596	48,749
Electricity and utilities	36,565		32,298	29,161
Publication	13,417		13,988	15,136
Repairs and maintenance	53,218		32,448	23,947
Vehicle	16,901		14,314	11,537
Travel	13,271		12,251	21,452
Training	34,056		27,610	31,451
Service fees	260,298		238,787	227,631
Electronic data processing expenses	314,511		280,773	258,456
Advertising	210,187		236,618	228,826
Others	321,254		295,926	286,538
Sub-total	1,715,184		1,615,005	1,531,299
Total	₩ 7,200,853	$ 6,074,106	₩ 6,814,812	₩ 6,271,805

General and Administrative Ex_4

General and Administrative Expenses - Summary of Stock Grants Linked to Long-term and Short-term Performance (Details)	12 Months Ended
	Dec. 31, 2021shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Granted in 2020
Number of granted shares	13,402
Description of method of settlement for share-based payment arrangement	Cash-settled
Linked to short-term performance
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	2,106,764	[1]
Linked to long term performance
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	2,001,526	[2]
KB Financial Group Inc. | Linked to long term performance
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	286,178	[2]
KB Financial Group Inc. | Series 22
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Apr. 1, 2019
Number of granted shares	3,278	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[3],[4]
KB Financial Group Inc. | Series 23
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	May 27, 2019
Number of granted shares	1,436	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[3],[4]
KB Financial Group Inc. | Series 25
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Jan. 1, 2020
Number of granted shares	36,103	[2]
Vesting conditions	Services fulfillment, market performance 0~30%, and non-market performance 70~100%	[1],[3],[4]
KB Financial Group Inc. | Series 27
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Jun. 16, 2020
Number of granted shares	184	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[3],[4]
KB Financial Group Inc. | Series 28
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Nov. 21, 2020
Number of granted shares	68,135	[2]
Vesting conditions	Services fulfillment, market performance 35%, and non-market performance 65%	[1],[3],[4]
KB Financial Group Inc. | Deferred grant in 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	5,303	[2]
Vesting conditions	Satisfied	[1]
KB Financial Group Inc. | Deferred grant in 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	6,119	[2]
Vesting conditions	Satisfied	[1]
KB Financial Group Inc. | Deferred Grant In 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	3,863	[2]
Vesting conditions	Satisfied	[1]
KB Financial Group Inc. | Deferred grant in 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	2,249	[2]
Vesting conditions	Satisfied	[1]
KB Financial Group Inc. | Deferred Grant In 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	15,189	[2]
Vesting conditions	Satisfied	[1]
KB Financial Group Inc. | Deferred Grant In 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	45,661	[2]
Vesting conditions	Satisfied	[1]
KB Financial Group Inc. | Stock granted in 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	5,352	[1]
Vesting conditions	Satisfied
KB Financial Group Inc. | Stock granted in 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	5,409	[1]
Vesting conditions	Satisfied
KB Financial Group Inc. | Stock granted in 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	2,489	[1]
Vesting conditions	Satisfied
KB Financial Group Inc. | Stock granted in 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	7,400	[1]
Vesting conditions	Satisfied
KB Financial Group Inc. | Stock granted in 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	18,692	[1]
Vesting conditions	Satisfied
KB Financial Group Inc. | Stock granted in 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	34,658	[1]
Vesting conditions	Satisfied
KB Financial Group Inc. | Stock granted in 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	34,965	[1]
Vesting conditions	Proportional to service period
KB Financial Group Inc. | Series 29
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Jan. 1, 2021
Number of granted shares	94,120	[2]
Vesting conditions	Services fulfillment, market performance 0~30%, and non-market performance 70~100%	[1],[3],[4]
KB Financial Group Inc. | Series 30
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Apr. 1, 2021
Number of granted shares	3,069	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[3],[4]
KB Financial Group Inc. | Series 31
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	May 27, 2021
Number of granted shares	1,344	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[3],[4]
KB Financial Group Inc. | Series 32
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Aug. 20, 2021
Number of granted shares	125	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[3],[4]
Kookmin Bank | Linked to long term performance
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	746,346	[2]
Kookmin Bank | Deferred grant in 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	760	[2]
Vesting conditions	Satisfied	[1]
Kookmin Bank | Deferred grant in 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	12,671	[2]
Vesting conditions	Satisfied	[1]
Kookmin Bank | Deferred Grant In 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	33,916	[2]
Vesting conditions	Satisfied	[1]
Kookmin Bank | Deferred grant in 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	9,763	[2]
Vesting conditions	Satisfied	[1]
Kookmin Bank | Deferred Grant In 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	66,067	[2]
Vesting conditions	Satisfied	[1]
Kookmin Bank | Deferred Grant In 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	80,634	[2]
Vesting conditions	Satisfied	[1]
Kookmin Bank | Stock granted in 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	5,019	[1]
Vesting conditions	Satisfied
Kookmin Bank | Stock granted in 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	12,867	[1]
Vesting conditions	Satisfied
Kookmin Bank | Stock granted in 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	3,862	[1]
Vesting conditions	Satisfied
Kookmin Bank | Stock granted in 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	38,067	[1]
Vesting conditions	Satisfied
Kookmin Bank | Stock granted in 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	83,778	[1]
Vesting conditions	Satisfied
Kookmin Bank | Stock granted in 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	135,336	[1]
Vesting conditions	Satisfied
Kookmin Bank | Stock granted in 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	109,561	[1]
Vesting conditions	Proportional to service period
Kookmin Bank | Series 76
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Apr. 1, 2019
Number of granted shares	5,765	[2]
Vesting conditions	Services fulfillment, market performance 30~50%, and non-market performance 50~70%	[1],[3],[4]
Kookmin Bank | Series 77
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	May 27, 2019
Number of granted shares	4,396	[2]
Vesting conditions	Services fulfillment, market performance 30~50%, and non-market performance 50~70%	[1],[3],[4]
Kookmin Bank | Series 78
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Nov. 21, 2019
Number of granted shares	36,443	[2]
Vesting conditions	Services fulfillment, market performance 30%, and non-market performance 70%	[1],[4],[5]
Kookmin Bank | Series 79
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Jan. 1, 2020
Number of granted shares	223,517	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Kookmin Bank | Series 80
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Mar. 1, 2020
Number of granted shares	7,943	[2]
Vesting conditions	Services fulfillment, market performance 30~50%, and non-market performance 50~70%	[1],[3],[4]
Kookmin Bank | Series 81
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Jan. 1, 2021
Number of granted shares	234,366	[2]
Vesting conditions	Services fulfillment, market performance 0~30%, and non-market performance 70~100%	[1],[3],[4]
Kookmin Bank | Series 82
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Mar. 1, 2021
Number of granted shares	18,202	[2]
Vesting conditions	Services fulfillment, market performance 0~30%, and non-market performance 70~100%	[1],[3],[4]
Kookmin Bank | Series 83
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	Apr. 1, 2021
Number of granted shares	7,871	[2]
Vesting conditions	Services fulfillment, market performance 0~30%, and non-market performance 70~100%	[1],[3],[4]
Kookmin Bank | Series 84
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date	May 27, 2021
Number of granted shares	4,032	[2]
Vesting conditions	Services fulfillment, market performance 0~30%, and non-market performance 70~100%	[1],[3],[4]
Other subsidiaries
Disclosure of terms and conditions of share-based payment arrangement [line items]
Explanation of share options in share-based payment arrangement	The Group changed the scheme of share-based payments awarded to executives and employees from stock options to stock grants in November 2007. The stock grants award program is an incentive plan that sets, on grant date, the maximum number of shares that can be awarded. Actual shares to be granted is determined in accordance with achievement of pre-set performance targets over the vesting period.
Other subsidiaries | Linked to long term performance
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	969,002	[2]
Other subsidiaries | Stock granted in 2010
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	106	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2011
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	146	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2012
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	420	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2013
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	544	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2014
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	1,028	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	2,602	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	5,713	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	17,820	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	62,610	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	76,872	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	375,558	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
Other subsidiaries | Stock granted in 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	7,777	[1]
Vesting conditions	Satisfied
Other subsidiaries | Stock granted in 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	34,345	[1]
Vesting conditions	Satisfied
Other subsidiaries | Stock granted in 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	58,052	[1]
Vesting conditions	Satisfied
Other subsidiaries | Stock granted in 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	226,242	[1]
Vesting conditions	Satisfied
Other subsidiaries | Stock granted in 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	408,353	[1]
Vesting conditions	Satisfied
Other subsidiaries | Stock granted in 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	606,891	[1]
Vesting conditions	Satisfied
Other subsidiaries | Stock granted in 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Estimated number of vested shares	267,649	[1]
Vesting conditions	Proportional to service period
Other subsidiaries | Stock granted in 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of granted shares	425,583	[2]
Vesting conditions	Services fulfillment, market performance 0~50%, and non-market performance 50~100%	[1],[3],[4]
[1]	Executives and employees were given the right of choice about the timing of the deferred payment (after the date of retirement), payment ratio, and payment period. Accordingly, a certain percentage of the granted shares is deferred for up to five years after the date of retirement after the deferred grant has been confirmed.
[2]	Granted shares represent the total number of shares initially granted to executives and employees who have residual shares as of December 31, 2021 (Deferred grants are residual shares vested as of December 31, 2021).
[3]	Performance results of company and employee
[4]	Relative TSR (Total Shareholder Return): [(Fair value at the end of the contract—Fair value at the beginning of the contract) + (Total amount of dividend per share paid during the contract period)] / Fair value at the beginning of the contract
[5]	EPS, Asset Quality

General and Administrative Ex_5

General and Administrative Expenses - Summary of Share Grants Measured at Fair Value (Details) - KRW (₩)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Expense From Share Grants Transactions With Employees	₩ 101,897,000,000	₩ 48,712,000,000
Liabilities From Share Grants	₩ 193,023,000,000	₩ 135,327,000,000
Information about how fair value was measured, share options granted	The Group uses the volatility of the stock price over the previous year as the expected volatility, and uses the arithmetic mean of the price-dividend ratio of one year before, two years before, and three years before the base year as the dividend yield and uses one-year risk-free rate of Korea Treasury Bond in order to measure the fair value.
Kookmin Bank | Stock granted in 2015
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2015 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 47,153
Kookmin Bank | Stock granted in 2015 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Stock granted in 2016
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2016 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 47,153
Kookmin Bank | Stock granted in 2016 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Stock granted in 2017
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2017 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Stock granted in 2017 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Stock granted in 2018
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2018 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Stock granted in 2018 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Stock granted in 2019
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 53,308
Kookmin Bank | Stock granted in 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Stock granted in 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Stock granted in 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 76
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 76 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
Kookmin Bank | Series 76 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 77
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 77 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
Kookmin Bank | Series 77 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 78
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 78 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 49,885
Fair value (Non-market performance condition)	50,023
Kookmin Bank | Series 78 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,223
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 79
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 79 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
Kookmin Bank | Series 79 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 80
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 80 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 48,344
Fair value (Non-market performance condition)	48,344
Kookmin Bank | Series 80 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	53,308
Fair value (Non-market performance condition)	₩ 53,308
Kookmin Bank | Deferred grant in 2015
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Deferred grant in 2015 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Deferred grant in 2015 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Deferred grant in 2016
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Deferred grant in 2016 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 47,153
Kookmin Bank | Deferred grant in 2016 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Deferred grant in 2017
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Deferred grant in 2017 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Deferred grant in 2017 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Deferred Grant In 2018
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Deferred Grant In 2018 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Deferred Grant In 2018 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Deferred Grant In 2019
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Deferred Grant In 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 45,096
Kookmin Bank | Deferred Grant In 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Deferred Grant In 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Deferred Grant In 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Deferred Grant In 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 81
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 81 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 48,344
Fair value (Non-market performance condition)	48,344
Kookmin Bank | Series 81 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
Kookmin Bank | Series 82
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 82 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Fair value (Non-market performance condition)	46,800
Kookmin Bank | Series 82 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	51,523
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Series 84
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 84 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Fair value (Non-market performance condition)	46,800
Kookmin Bank | Series 84 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	51,523
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Series 83
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Series 83 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Fair value (Non-market performance condition)	46,800
Kookmin Bank | Series 83 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	51,523
Fair value (Non-market performance condition)	₩ 51,523
Kookmin Bank | Stock granted in 2021
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Kookmin Bank | Stock granted in 2021 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 50,023
Kookmin Bank | Stock granted in 2021 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 54,229
KB Financial Group Inc. | Stock granted in 2015
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2015 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 48,344
KB Financial Group Inc. | Stock granted in 2015 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Series 22
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 22 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
KB Financial Group Inc. | Series 22 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Stock granted in 2016
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2016 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 45,304
KB Financial Group Inc. | Stock granted in 2016 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Series 23
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 23 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
KB Financial Group Inc. | Series 23 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Stock granted in 2017
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2017 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Stock granted in 2017 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Stock granted in 2018
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2018 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Stock granted in 2018 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Series 25
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 25 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
KB Financial Group Inc. | Series 25 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Stock granted in 2019
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 53,308
KB Financial Group Inc. | Stock granted in 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Stock granted in 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 48,344
KB Financial Group Inc. | Stock granted in 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Series 27
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 27 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 48,344
KB Financial Group Inc. | Series 27 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Series 28
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 28 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 43,391
Fair value (Non-market performance condition)	46,978
KB Financial Group Inc. | Series 28 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	47,774
Fair value (Non-market performance condition)	₩ 51,724
KB Financial Group Inc. | Deferred grant in 2015
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Deferred grant in 2015 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 48,344
KB Financial Group Inc. | Deferred grant in 2015 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Deferred grant in 2016
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Deferred grant in 2016 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Deferred grant in 2016 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Deferred grant in 2017
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Deferred grant in 2017 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 53,308
KB Financial Group Inc. | Deferred grant in 2017 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Deferred Grant In 2018
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Deferred Grant In 2018 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Deferred Grant In 2018 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Deferred Grant In 2019
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Deferred Grant In 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 53,308
KB Financial Group Inc. | Deferred Grant In 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Deferred Grant In 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Deferred Grant In 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 48,344
KB Financial Group Inc. | Deferred Grant In 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Series 29
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 29 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 48,344
Fair value (Non-market performance condition)	48,344
KB Financial Group Inc. | Series 29 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Series 30
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 30 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Fair value (Non-market performance condition)	46,800
KB Financial Group Inc. | Series 30 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	51,523
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Series 31
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 31 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Fair value (Non-market performance condition)	46,800
KB Financial Group Inc. | Series 31 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	51,523
Fair value (Non-market performance condition)	₩ 51,523
KB Financial Group Inc. | Series 32
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Series 32 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 50,023
Fair value (Non-market performance condition)	50,023
KB Financial Group Inc. | Series 32 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	56,379
Fair value (Non-market performance condition)	₩ 56,379
KB Financial Group Inc. | Stock granted in 2021
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
KB Financial Group Inc. | Stock granted in 2021 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 50,023
KB Financial Group Inc. | Stock granted in 2021 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2010 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2010 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2011 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2011 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2012 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	51,523
Subsidiaries | Stock granted in 2012 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2013 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	51,523
Subsidiaries | Stock granted in 2013 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	53,308
Subsidiaries | Stock granted in 2014 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	51,523
Subsidiaries | Stock granted in 2014 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	51,523
Subsidiaries | Stock granted in 2015 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	46,800
Subsidiaries | Stock granted in 2015 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	56,379
Subsidiaries | Stock granted in 2016 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	46,436
Subsidiaries | Stock granted in 2016 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	56,502
Subsidiaries | Stock granted in 2017 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	45,096
Subsidiaries | Stock granted in 2017 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	61,294
Subsidiaries | Stock granted in 2018 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	45,096
Subsidiaries | Stock granted in 2018 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	56,502
Subsidiaries | Stock granted in 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	45,096
Subsidiaries | Stock granted in 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	56,502
Subsidiaries | Stock granted in 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	45,096
Subsidiaries | Stock granted in 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	56,502
Subsidiaries | Stock granted in 2021 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	46,800
Subsidiaries | Stock granted in 2021 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	56,502
Other subsidiaries | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 46,800
Other subsidiaries | Stock granted in 2015
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2015 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 46,800
Other subsidiaries | Stock granted in 2015 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2016
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2016 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 46,800
Other subsidiaries | Stock granted in 2016 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2017
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2017 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 45,096
Other subsidiaries | Stock granted in 2017 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2018
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2018 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 45,096
Other subsidiaries | Stock granted in 2018 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2019
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 45,096
Other subsidiaries | Stock granted in 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 46,800
Other subsidiaries | Stock granted in 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2010
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2011
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2012
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2013
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2014
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2015
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2016
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2017
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2018
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2019
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2019 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Other subsidiaries | Stock granted in 2019 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2020
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2020 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 48,344
Other subsidiaries | Stock granted in 2020 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 56,502
Other subsidiaries | Stock granted in 2021
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2021 | Bottom of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 46,800
Other subsidiaries | Stock granted in 2021 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Market performance condition)	₩ 56,379
Other subsidiaries | Stock granted in 2021
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Risk free rate (%)	1.35%
Other subsidiaries | Stock granted in 2021 | Top of range [member]
Disclosure of indirect measurement of fair value of goods or services received share grants during period [line items]
Fair value (Non-market performance condition)	₩ 54,649

General and Administrative Ex_6

General and Administrative Expenses - Summary of Mileage Stock (Details) ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)shares	Dec. 31, 2020KRW (₩)
Disclosure of terms and conditions of mileage stock [line items]
Number of granted shares	[1]	85,677
Remaining shares		63,005
Explanation of effect of mileage stock on financial positions		Mileage stock is exercisable for two years after one year from the grant date at the closing price of the end of the previous month. However, mileage stock can be exercised at the closing price of the end of the previous month on the date of occurrence of retirement or transfer despite a one-year grace period.
Liabilities from mileage stock | ₩		₩ 3,465	₩ 2,862
Explanation of effect of mileage stock on profit or loss		Assessed based on the stock price as of December 31, 2021. These shares are vested immediately at grant date.
Expense from mileage stock transactions with employees | ₩		₩ 2,116	₩ 1,086
Stock Granted in 201901
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jan. 11, 2019
Number of granted shares	[1]	26,580
Remaining shares		14,907
Stock Granted in 201901 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201901 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.03
Stock Granted in 201902
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Apr. 1, 2019
Number of granted shares	[1]	167
Remaining shares		73
Stock Granted in 201902 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201902 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.25
Stock Granted in 201903
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Apr. 18, 2019
Number of granted shares	[1]	105
Remaining shares		45
Stock Granted in 201903 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201903 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.29
Stock Granted in 201904
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Apr. 22, 2019
Number of granted shares	[1]	33
Remaining shares		17
Stock Granted in 201904 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201904 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.30
Stock Granted in 201905
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jul. 1, 2019
Number of granted shares	[1]	109
Remaining shares		87
Stock Granted in 201905 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201905 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.50
Stock Granted in 201906
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Aug. 29, 2019
Number of granted shares	[1]	39
Remaining shares		35
Stock Granted in 201906 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201906 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.66
Stock Granted in 201909
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Nov. 8, 2019
Number of granted shares	[1]	14
Remaining shares		6
Stock Granted in 201909 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201909 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.85
Stock Granted in 201907
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Sep. 2, 2019
Number of granted shares	[1]	50
Remaining shares		28
Stock Granted in 201907 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201907 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.67
Stock Granted in 201908
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Nov. 1, 2019
Number of granted shares	[1]	119
Remaining shares		71
Stock Granted in 201908 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201908 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.83
Stock Granted in 201910
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 5, 2019
Number of granted shares	[1]	56
Remaining shares		43
Stock Granted in 201910 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201910 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.93
Stock Granted in 201911
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 6, 2019
Number of granted shares	[1]	84
Remaining shares		82
Stock Granted in 201911 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201911 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0.93
Stock Granted in 201912
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 31, 2019
Number of granted shares	[1]	87
Remaining shares		65
Stock Granted in 201912 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 201912 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1
Stock Granted in 202001
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jan. 18, 2020
Number of granted shares	[1]	28,645
Remaining shares		19,435
Stock Granted in 202001 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202001 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.05
Stock Granted in 202002
Disclosure of terms and conditions of mileage stock [line items]
Grant date		May 12, 2020
Number of granted shares	[1]	46
Remaining shares		44
Stock Granted in 202002 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202002 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.36
Stock Granted in 202003
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jun. 30, 2020
Number of granted shares	[1]	206
Remaining shares		206
Stock Granted in 202003 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202003 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.50
Stock Granted in 202004
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Aug. 26, 2020
Number of granted shares	[1]	40
Remaining shares		40
Stock Granted in 202004 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202004 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.65
Stock Granted in 202005
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Oct. 29, 2020
Number of granted shares	[1]	160
Remaining shares		160
Stock Granted in 202005 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202005 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.83
Stock Granted in 202006
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Nov. 6, 2020
Number of granted shares	[1]	45
Remaining shares		37
Stock Granted in 202006 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202006 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.85
Stock Granted in 202007
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Nov. 30, 2020
Number of granted shares	[1]	35
Remaining shares		34
Stock Granted in 202007 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202007 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.92
Stock Granted in 202008
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 2, 2020
Number of granted shares	[1]	57
Remaining shares		53
Stock Granted in 202008 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202008 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.92
Stock Granted in 202009
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 4, 2020
Number of granted shares	[1]	154
Remaining shares		141
Stock Granted in 202009 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202009 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	1.93
Stock Granted in 202010
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 30, 2020
Number of granted shares	[1]	88
Remaining shares		86
Stock Granted in 202010 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted in 202010 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2
Stock Granted In 202101
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jan. 15, 2021
Number of granted shares	[1]	28,156
Remaining shares		26,708
Stock Granted In 202101 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202101 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.04
Stock Granted In 202102
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Apr. 1, 2021
Number of granted shares	[1]	89
Remaining shares		89
Stock Granted In 202102 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202102 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.26
Stock Granted In 202103
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jul. 1, 2021
Number of granted shares	[1]	54
Remaining shares		54
Stock Granted In 202103 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202103 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.50
Stock Granted In 202104
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jul. 2, 2021
Number of granted shares	[1]	11
Remaining shares		11
Stock Granted In 202104 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202104 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.50
Stock Granted In 202105
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Jul. 27, 2021
Number of granted shares	[1]	70
Remaining shares		70
Stock Granted In 202105 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202105 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.57
Stock Granted In 202106
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Nov. 1, 2021
Number of granted shares	[1]	71
Remaining shares		71
Stock Granted In 202106 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202106 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.84
Stock Granted In 202107
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Nov. 16, 2021
Number of granted shares	[1]	53
Remaining shares		53
Stock Granted In 202107 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202107 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.88
Stock Granted In 202108
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 3, 2021
Number of granted shares	[1]	91
Remaining shares		91
Stock Granted In 202108 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202108 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.92
Stock Granted In 202109
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 6, 2021
Number of granted shares	[1]	87
Remaining shares		87
Stock Granted In 202109 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202109 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	2.93
Stock Granted In 202110
Disclosure of terms and conditions of mileage stock [line items]
Grant date		Dec. 30, 2021
Number of granted shares	[1]	76
Remaining shares		76
Stock Granted In 202110 | Minimum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	0
Stock Granted In 202110 | Maximum
Disclosure of terms and conditions of mileage stock [line items]
Expected exercise period (Years)	[2]	3
[1]	Mileage stock is exercisable for two years after one year from the grant date at the closing price of the end of the previous month. However, mileage stock can be exercised at the closing price of the end of the previous month on the date of occurrence of retirement or transfer despite a one-year grace period.
[2]	Assessed based on the stock price as of December 31, 2021. These shares are vested immediately at grant date.

General and Administrative Ex_7

General and Administrative Expenses - Summary of Long-term Share Based Payments (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)shares	Dec. 31, 2020KRW (₩)
Disclosure of terms and conditions of share-based payment arrangement [abstract]
Grant date	Granted in 2020
Type of payment	Cash-settled
Vested shares | shares	13,402
Expected exercise period (years)	2
Valuation method	MonteCarlo simulation model
Vesting Condition	Services fulfillment
Risk-free rate (%)	1.35%
Fair value (Market performance condition)	₩ 0
Fair value (Non-market performance condition)	₩ 51,523
Information about how fair value was measured	The Group uses the volatility of the stock price over the previous year as the expected volatility, and uses the arithmetic mean of the price-dividend ratio of one year before, two years before, and three years before the base year as the dividend yield and uses one-year risk-free rate of Korea Treasury Bond in order to measure the fair value.
Liabilities from long-term share-based payments	₩ 690	₩ 652
Expense from long-term share-based payments transactions	₩ 38	₩ 652

Net Other Non-Operating Incom_3

Net Other Non-Operating Income and Expenses - Schedule Of Other Nonoperating Income Expense (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Other non-operating income
Gain on disposal of property and equipment	₩ 9,045		₩ 111,132	₩ 35,747
Rental income	34,791		113,075	85,720
Gains on a bargain purchase	288	$ 243	145,067	0
Gain on sales of disposal group held for sale	0		0	2,731
Others	81,210		96,931	84,793
Sub-total	125,334		466,205	208,991
Other non-operating expenses
Loss on disposal of property and equipment	6,552		11,945	8,587
Donation	103,647		113,083	102,711
Restoration Cost	3,436		5,043	2,902
Management cost for written-off loans	4,054		3,018	3,382
Others	117,182		143,726	64,523
Sub-total	234,871		276,815	182,105
Net other non-operating income (expenses)	₩ (109,537)		₩ 189,390	₩ 26,886

Income Tax Expense - Schedule O

Income Tax Expense - Schedule Of Components Of Income Tax Expense Benefit (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Income tax payable
Current income tax expense		₩ 1,571,947		₩ 1,099,171	₩ 1,043,047
Adjustments of income tax of prior years recognized in current tax		7,952		(13,434)	(51,130)
Sub-total		1,579,899		1,085,737	991,917
Changes in deferred income tax assets and liabilities	[1]	214,660		326,918	286,099
Income Tax Effects Allocated Directly To Equity [Abstract]
Remeasurements of net defined benefit liabilities		18,638		4,949	20,676
Currency translation differences		(15,675)		14,988	(5,714)
Net gains or losses on financial assets at fair value through other comprehensive income		(71,421)		(88,907)	(13,168)
Share of other comprehensive income or loss of associates and joint ventures		(7)		2,976	(3,147)
Gains or losses on cash flow hedging instruments		(21,534)		7,580	10,537
Gains or losses on hedging instruments of net investments in foreign operations		25,599		(24,500)	3,194
Other comprehensive income or loss arising from separate account		24,206		3,671	(1,301)
Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk		(5,202)		(3,350)	4,294
Net gains or losses on overlay adjustment		(46,834)		(61,637)	(72,817)
Consideration for exchange right of exchangeable bonds		0		(4,526)	0
Sub-total		(92,230)		(148,756)	(57,446)
Others		(5,104)		495	0
Income tax expense		₩ 1,697,225	$ 1,431,653	₩ 1,264,394	₩ 1,220,570
[1]	Effect of business combination is excluded.

Income Tax Expense - Schedule_2

Income Tax Expense - Schedule Of Effective Income Tax Rate Reconciliation (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Reconciliation of average effective tax rate and applicable tax rate [abstract]
Profit before income tax expense		₩ 6,081,606	$ 5,129,992	₩ 4,779,972	₩ 4,533,198
Income tax at the applicable tax rate (Amount)	[1]	1,662,080		1,304,130	1,236,267
Non-taxable income (Amount)		(40,708)		(73,855)	(23,601)
Non-deductible expenses (Amount)		25,739		16,541	19,086
Tax credit and tax exemption (Amount)		(361)		(4,016)	(627)
Temporary difference for which no deferred tax is recognized (Amount)		5,065		22,189	(4,860)
Changes in recognition and measurement of deferred tax (Amount)		5,997		11,616	(100)
Income tax refund for tax of prior years (Amount)		(13,953)		(22,139)	(9,105)
Income tax expense of overseas branches (Amount)		18,571		10,739	5,004
Others (Amount)		34,795		(811)	(1,494)
Average effective income tax expense		₩ 1,697,225	$ 1,431,653	₩ 1,264,394	₩ 1,220,570
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Income tax at the applicable tax rate (Tax rate)	[1]	27.33%	27.33%	27.28%	27.27%
Non-taxable income (Tax rate)		(0.67%)	(0.67%)	(1.55%)	(0.52%)
Non-deductible expenses (Tax rate)		0.42%	0.42%	0.35%	0.42%
Tax credit and tax exemption (Tax rate)		(0.01%)	(0.01%)	(0.08%)	(0.01%)
Temporary difference for which no deferred tax is recognized (Tax rate)		0.08%	0.08%	0.47%	(0.11%)
Changes in recognition and measurement of deferred tax (Tax rate)		0.10%	0.10%	0.24%	0.00%
Income tax refund for tax of prior years (Tax rate)		(0.23%)	(0.23%)	(0.46%)	(0.20%)
Income tax expense of overseas branches (Tax rate)		0.31%	0.31%	0.23%	0.11%
Others (Tax rate)		0.57%	0.57%	(0.02%)	(0.03%)
Average effective tax rate		27.90%	27.90%	26.45%	26.93%
Description Of Applicable Tax Rate By Taxable Income		Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.	Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.	Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.	Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.
[1]	Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.

Income Tax Expense - Schedule_3

Income Tax Expense - Schedule Of Effective Income Tax Rate Reconciliation (Parenthetical) (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Applicable tax rate	[1]	27.33%	27.28%	27.27%
Upto Two Hundred Million Won [Member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Taxable income				₩ 200
Applicable tax rate				11.00%
Greater Than Two Hundred Million To Twenty Billion Won [Member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Applicable tax rate			22.00%
Greater Than Two Hundred Million To Twenty Billion Won [Member] | Top of range [member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Taxable income			₩ 20,000
Greater Than Two Hundred Million To Twenty Billion Won [Member] | Bottom of range [member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Taxable income			₩ 200
Greater Than Twenty Billion Upto Three Hundred Billion Won [Member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Applicable tax rate		24.20%
Greater Than Twenty Billion Upto Three Hundred Billion Won [Member] | Top of range [member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Taxable income		₩ 300,000
Greater Than Twenty Billion Upto Three Hundred Billion Won [Member] | Bottom of range [member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Taxable income		20,000
Greater Than Three Hundred Billion Won [Member]
Reconciliation of average effective tax rate and applicable tax rate [Line Items]
Taxable income		₩ 300,000
Applicable tax rate		27.50%
[1]	Applicable income tax rate for ￦ 200 million and below is 11%, for over ￦ 200 million to ￦ 20 billion is 22%, for over ￦ 20 billion to ￦ 300 billion is 24.2% and for over ￦ 300 billion is 27.5% for the years ended December 31, 2019, 2020 and 2021.

Dividends - Additional Informat

Dividends - Additional Information (Details) ₩ / shares in Units, $ in Thousands, ₩ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2021KRW (₩)₩ / shares	Dec. 31, 2021KRW (₩)₩ / shares	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)₩ / shares	Dec. 31, 2019KRW (₩)
Disclosure Of Dividends [Abstract]
Dividends Recognised As Distributions To Owners Of Parent		₩ 689,653	$ 581,740	₩ 861,092	₩ 759,736
Dividends Recognised As Distributions To Owners Of Parent	₩ 292,226	₩ 292,226	$ 246,500
Dividends Recognised As Distributions To Owners Per Share	₩ 750	₩ 1,770		₩ 2,210
Dividends Proposed Or Declared Before Financial Statements Authorised For Issue But Not Recognised As Distribution To Owners | ₩		₩ 853,299
Dividends Proposed Or Declared Before Financial Statements Authorised For Issue But Not Recognised As Distribution To Owners Per Share		₩ 2,190

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule Of Accumulated Other Comprehensive Income (Loss) (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	₩ 630,011	₩ 368,744
Changes except for reclassification	327,490	861,751
Reclassification to profit or loss	(124,950)	(129,844)
Transfer within equity	314,624	(326,410)
Tax effect	(92,230)	(144,230)
Ending	1,054,945	630,011
Remeasurements of net defined benefit liabilities
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	(282,650)	(269,505)
Changes except for reclassification	(64,380)	(18,094)
Reclassification to profit or loss	0	0
Transfer within equity	0	0
Tax effect	18,638	4,949
Ending	(328,392)	(282,650)
Currency translation differences
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	(131,113)	31,793
Changes except for reclassification	248,998	(177,894)
Reclassification to profit or loss	1,995	0
Transfer within equity	(7,671)	0
Tax effect	(15,675)	14,988
Ending	96,534	(131,113)
Gains on financial instruments at fair value through other comprehensive income
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	717,230	487,331
Changes except for reclassification	(62,043)	757,236
Reclassification to profit or loss	20,537	(112,020)
Transfer within equity	314,624	(326,410)
Tax effect	(71,421)	(88,907)
Ending	918,927	717,230
Share of other comprehensive income (loss) of associates and joint ventures
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	(3,529)	3,318
Changes except for reclassification	3,276	(3,923)
Reclassification to profit or loss	(2,720)	(5,900)
Transfer within equity	0	0
Tax effect	(7)	2,976
Ending	(2,980)	(3,529)
Gains (losses) on cash flow hedging instruments
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	(28,597)	(27,333)
Changes except for reclassification	95,478	(48,034)
Reclassification to profit or loss	(53,080)	39,190
Transfer within equity	0	0
Tax effect	(21,534)	7,580
Ending	(7,733)	(28,597)
Gains (losses) on hedging instruments of net investments in foreign operations
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	22,277	(41,992)
Changes except for reclassification	(88,729)	88,769
Reclassification to profit or loss	5,195	0
Transfer within equity	0	0
Tax effect	25,599	(24,500)
Ending	(35,658)	22,277
Other comprehensive income (loss) arising from separate account
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	8,698	18,381
Changes except for reclassification	(81,601)	2,834
Reclassification to profit or loss	(6,419)	(16,188)
Transfer within equity	0	0
Tax effect	24,206	3,671
Ending	(55,116)	8,698
Fair value changes of financial liabilities designated at fair value through profit or loss due to own credit risk
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	(11,507)	(20,326)
Changes except for reclassification	18,917	12,169
Reclassification to profit or loss	0	0
Transfer within equity	0	0
Tax effect	(5,202)	(3,350)
Ending	2,208	(11,507)
Gains on overlay adjustment
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	339,202	187,077
Changes except for reclassification	257,574	248,688
Reclassification to profit or loss	(90,458)	(34,926)
Transfer within equity	0	0
Tax effect	(46,834)	(61,637)
Ending	459,484	339,202
Assets of a disposal group held for sale
Disclosure of analysis of other comprehensive income by item [line items]
Beginning	0
Changes except for reclassification	0
Reclassification to profit or loss	0
Transfer within equity	7,671
Tax effect	0
Ending	₩ 7,671	₩ 0

Earnings per Share - Summary of

Earnings per Share - Summary of Basic Earnings per Share (Details)	12 Months Ended
	Dec. 31, 2021$ / sharesshares	Dec. 31, 2021KRW (₩)₩ / sharesshares	Dec. 31, 2020KRW (₩)₩ / sharesshares	Dec. 31, 2019KRW (₩)₩ / sharesshares
Earnings per share
Weighted average number of ordinary shares outstanding		389,634,335	389,634,335	391,131,683
Profit attributable to shareholders of the Parent Company | ₩		₩ 4,409,543,288,213	₩ 3,468,447,701,501	₩ 3,311,255,938,055
Deduction: Dividends on hybrid securities | ₩		(71,537,500,000)	(22,859,500,000)	(6,512,500,000)
Profit attributable to ordinary equity holders of the Parent Company | ₩		₩ 4,338,005,788,213	₩ 3,445,588,201,501	₩ 3,304,743,438,055
Basic earnings per share | (per share)	$ 9.39	₩ 11,134	₩ 8,843	₩ 8,449
Number of shares
Earnings per share
Number of issued ordinary shares	415,807,920	415,807,920	415,807,920	415,807,920
Number of treasury shares	(26,173,585)	(26,173,585)	(26,173,585)	(26,173,585)
Average number of ordinary shares outstanding	389,634,335	389,634,335	389,634,335	389,634,335
Accumulated number of shares
Earnings per share
Number of issued ordinary shares	151,769,890,800	151,769,890,800	152,185,698,720	152,564,638,665
Number of treasury shares	(9,553,358,525)	(9,553,358,525)	(9,579,532,110)	(9,801,574,522)
Average number of ordinary shares outstanding	142,216,532,275	142,216,532,275	142,606,166,610	142,763,064,143
Number of days		365	366	365
Weighted average number of ordinary shares outstanding		389,634,335	389,634,335	391,131,683

Earnings per Share - Summary _2

Earnings per Share - Summary of Diluted Earnings per Share (Details)	12 Months Ended
	Dec. 31, 2021$ / shares	Dec. 31, 2021KRW (₩)₩ / sharesshares	Dec. 31, 2020KRW (₩)₩ / sharesshares	Dec. 31, 2019KRW (₩)₩ / sharesshares
Earnings per share [abstract]
Explanation of adjustments between denominators used to calculate basic and diluted earnings per share		A calculation is done to determine the number of shares that could have been acquired at fair value (determined as the average market share price for the year) based on the monetary value of stock grants. The number of shares calculated above is compared with the number of shares that would have been issued assuming the settlement of stock grants.	A calculation is done to determine the number of shares that could have been acquired at fair value (determined as the average market share price for the year) based on the monetary value of stock grants. The number of shares calculated above is compared with the number of shares that would have been issued assuming the settlement of stock grants.	A calculation is done to determine the number of shares that could have been acquired at fair value (determined as the average market share price for the year) based on the monetary value of stock grants. The number of shares calculated above is compared with the number of shares that would have been issued assuming the settlement of stock grants.
Profit loss attributable to ordinary equity holders of parent entity including dilutive effects [abstract]
Profit attributable to shareholders of the Parent Company		₩ 4,409,543,288,213	₩ 3,468,447,701,501	₩ 3,311,255,938,055
Deduction: Dividends on hybrid securities		(71,537,500,000)	(22,859,500,000)	(6,512,500,000)
Profit attributable to ordinary equity holders of the Parent Company		4,338,005,788,213	3,445,588,201,501	3,304,743,438,055
Adjustments: Interest expense on exchangeable bonds		2,347,186,871	798,012,332	0
Adjusted profit for diluted earnings per share		₩ 4,340,352,975,084	₩ 3,446,386,213,833	₩ 3,304,743,438,055
Weighted average ordinary shares and adjusted weighted average ordinary shares [abstract]
Weighted average number of ordinary shares outstanding | shares		389,634,335	389,634,335	391,131,683
Stock grants | shares		3,945,208	3,416,737	2,890,513
Exchangeable bonds | shares		5,000,000	1,707,650	0
Adjusted weighted average number of ordinary shares outstanding for diluted earnings per share | shares		398,579,543	394,758,722	394,022,196
Basic and diluted earnings per share [Abstract]
Adjusted profit for diluted earnings per share		₩ 4,340,352,975,084	₩ 3,446,386,213,833	₩ 3,304,743,438,055
Adjusted weighted average number of ordinary shares outstanding for diluted earnings per share | shares		398,579,543	394,758,722	394,022,196
Diluted earnings per share | (per share)	$ 9.19	₩ 10,890	₩ 8,730	₩ 8,387

Insurance Contracts - Summary o

Insurance Contracts - Summary of Deferred Acquisition Costs (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Acquisition Costs Arising From Insurance Contracts [Line Items]
Total	₩ 1,576,206	₩ 1,170,972	₩ 921,365
Non-life insurance
Deferred Acquisition Costs Arising From Insurance Contracts [Line Items]
Total	1,230,375	965,683	786,626
Life insurance
Deferred Acquisition Costs Arising From Insurance Contracts [Line Items]
Total	₩ 345,831	₩ 205,289	₩ 134,739

Insurance Contracts - Summary_2

Insurance Contracts - Summary of Changes in the Deferred Acquisition Costs Included in Other Assets (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation Of Changes In Deferred Acquisition Costs Arising From Insurance Contracts [Line Items]
Beginning	₩ 1,170,972	₩ 921,365
Increase	1,224,388	1,017,240
Amortization	(819,154)	(767,633)	₩ (679,279)
Ending	1,576,206	1,170,972	921,365
Non-life insurance
Reconciliation Of Changes In Deferred Acquisition Costs Arising From Insurance Contracts [Line Items]
Beginning	965,683	786,626
Increase	965,735	872,811
Amortization	(701,043)	(693,754)
Ending	1,230,375	965,683	786,626
Life insurance
Reconciliation Of Changes In Deferred Acquisition Costs Arising From Insurance Contracts [Line Items]
Beginning	205,289	134,739
Increase	258,653	144,429
Amortization	(118,111)	(73,879)
Ending	₩ 345,831	₩ 205,289	₩ 134,739

Insurance Contracts - Summary_3

Insurance Contracts - Summary of Reinsurance Assets Included in Other Assets (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	₩ 1,348,492	₩ 1,205,708	₩ 740,651
Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	1,348,928	1,206,587	742,604
Allowances for credit losses
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	(436)	(879)	(1,953)
General Insurance | Reserve for outstanding claims | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	879,936	732,579	361,065
General Insurance | Unearned premium reserve | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	262,020	285,634	208,820
Non-life insurance | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	1,343,051	1,200,233	737,150
Life insurance | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	3,154	3,032	2,047
Life insurance | Reserve for outstanding claims | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	2,169	2,081	1,639
Life insurance | Unearned premium reserve | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	985	951	408
Automobile insurance | Reserve for outstanding claims | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	16,989	14,916	16,555
Automobile insurance | Unearned premium reserve | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	5,575	10,870	19,952
Others | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	2,723	3,322	3,407
Others | Reserve for outstanding claims | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	2,103	2,427	2,563
Others | Unearned premium reserve | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	620	895	844
Long-term Insurance | Reserve for outstanding claims | Acquisition cost
Details Of Reinsurance Assets Presented Within Other Assets [Line Items]
Reinsurance assets	₩ 178,531	₩ 156,234	₩ 130,758

Insurance Contracts - Summary_4

Insurance Contracts - Summary of Changes in Reinsurance Assets Included in Other Assets (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	₩ 1,205,708	₩ 740,651
Net increase (decrease)	142,784	463,481
Business combination		1,576
Ending	1,348,492	1,205,708
Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	1,206,587	742,604
Net increase (decrease)	142,341	462,407
Business combination		1,576
Ending	1,348,928	1,206,587
Allowances for credit losses
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	(879)	(1,953)
Net increase (decrease)	443	1,074
Business combination		0
Ending	(436)	(879)
Non-life insurance | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	1,200,233	737,150
Net increase (decrease)	142,818	463,083
Business combination		0
Ending	1,343,051	1,200,233
General Insurance | Reserve for outstanding claims | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	732,579	361,065
Net increase (decrease)	147,357	371,514
Business combination		0
Ending	879,936	732,579
General Insurance | Unearned premium reserve | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	285,634	208,820
Net increase (decrease)	(23,614)	76,814
Business combination		0
Ending	262,020	285,634
Life insurance | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	3,032	2,047
Net increase (decrease)	122	(591)
Business combination		1,576
Ending	3,154	3,032
Life insurance | Reserve for outstanding claims | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	2,081	1,639
Net increase (decrease)	88	(564)
Business combination		1,006
Ending	2,169	2,081
Life insurance | Unearned premium reserve | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	951	408
Net increase (decrease)	34	(27)
Business combination		570
Ending	985	951
Automobile insurance | Reserve for outstanding claims | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	14,916	16,555
Net increase (decrease)	2,073	(1,639)
Business combination		0
Ending	16,989	14,916
Automobile insurance | Unearned premium reserve | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	10,870	19,952
Net increase (decrease)	(5,295)	(9,082)
Business combination		0
Ending	5,575	10,870
Long-term Insurance | Reserve for outstanding claims | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	156,234	130,758
Net increase (decrease)	22,297	25,476
Business combination		0
Ending	178,531	156,234
Others | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	3,322	3,407
Net increase (decrease)	(599)	(85)
Business combination		0
Ending	2,723	3,322
Others | Reserve for outstanding claims | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	2,427	2,563
Net increase (decrease)	(324)	(136)
Business combination		0
Ending	2,103	2,427
Others | Unearned premium reserve | Acquisition cost
Details Of Changes In Reinsurance Assets Presented Within Other Assets [Line Items]
Beginning	895	844
Net increase (decrease)	(275)	51
Business combination		0
Ending	₩ 620	₩ 895

Insurance Contracts - Summary_5

Insurance Contracts - Summary of Insurance Liabilities (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2019KRW (₩)
Disclosure of types of insurance contracts [line items]
Liabilities under insurance contracts and reinsurance contracts issued		₩ 57,165,936	₩ 54,415,296	$ 48,220,950	₩ 34,966,683
Premium reserve	[1]	50,449,513	48,255,485
Reserve for outstanding claims		3,640,377	3,140,315
Unearned premium reserve		1,919,307	1,869,713
Reserve for dividend to policyholders		162,985	170,684
Reserve for distribution of earnings to policyholders		67,950	56,301
Reserve for loss compensation on participating insurance		30,898	26,908
Guarantee reserve		894,906	895,890
Amortization Of Value Of Business Acquired VOBA		2,390,985	2,698,010
Non-life insurance
Disclosure of types of insurance contracts [line items]
Liabilities under insurance contracts and reinsurance contracts issued		31,583,666	29,935,945
Premium reserve	[1]	26,086,004	24,990,530
Reserve for outstanding claims		3,378,427	2,885,006
Unearned premium reserve		1,909,327	1,859,367
Reserve for dividend to policyholders		122,025	129,660
Reserve for distribution of earnings to policyholders		63,093	51,292
Reserve for loss compensation on participating insurance		24,790	20,090
Guarantee reserve		0	0
Life insurance
Disclosure of types of insurance contracts [line items]
Liabilities under insurance contracts and reinsurance contracts issued		25,579,546	24,476,029
Premium reserve	[1]	24,363,509	23,264,955
Reserve for outstanding claims		259,848	252,883
Unearned premium reserve		9,358	9,450
Reserve for dividend to policyholders		40,960	41,024
Reserve for distribution of earnings to policyholders		4,857	5,009
Reserve for loss compensation on participating insurance		6,108	6,818
Guarantee reserve		894,906	895,890
Others
Disclosure of types of insurance contracts [line items]
Liabilities under insurance contracts and reinsurance contracts issued		2,724	3,322		₩ 3,407
Premium reserve	[1]	0	0
Reserve for outstanding claims		2,102	2,426
Unearned premium reserve		622	896
Reserve for dividend to policyholders		0	0
Reserve for distribution of earnings to policyholders		0	0
Reserve for loss compensation on participating insurance		0	0
Guarantee reserve		₩ 0	₩ 0
[1]	Includes negative VOBA amounting to ￦2,698,010 million and ￦2,390,985 million as of December 31, 2020 and 2021, respectively.

Insurance Contracts - Summary_6

Insurance Contracts - Summary of Changes in Insurance Liabilities (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		₩ 54,415,296		₩ 34,966,683
Net increase (decrease)	[1]	2,750,640		2,695,724
Business combination				16,752,889
Ending		57,165,936	$ 48,220,950	54,415,296
General Insurance
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		1,568,741		1,064,913
Net increase (decrease)	[1]	222,543		503,828
Business combination				0
Ending		1,791,284		1,568,741
Automobile insurance
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		1,897,872		1,623,846
Net increase (decrease)	[1]	127,693		274,026
Business combination				0
Ending		2,025,565		1,897,872
Long-term Insurance
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		26,362,479		25,006,078
Net increase (decrease)	[1]	1,373,257		1,356,401
Business combination				0
Ending		27,735,736		26,362,479
Long-term investment contract
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		106,853		108,938
Net increase (decrease)	[1]	(75,772)		(2,085)
Business combination				0
Ending		31,081		106,853
Pure endowment insurance
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		7,570,349		5,236,128
Net increase (decrease)	[1]	436,999		318,109
Business combination				2,016,112
Ending		8,007,348		7,570,349
Death insurance
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		15,706,051		642,963
Net increase (decrease)	[1]	810,366		404,456
Business combination				14,658,632
Ending		16,516,417		15,706,051
Endowment insurance
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		1,188,299		1,270,855
Net increase (decrease)	[1]	(142,962)		(156,688)
Business combination				74,132
Ending		1,045,337		1,188,299
Group insurance and others
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning	[2]	11,330		9,555
Net increase (decrease)	[1],[2]	(886)		(2,238)
Business combination	[2]			4,013
Ending	[2]	10,444		11,330
Others
Changes In Liabilities Under Insurance Contracts And Reinsurance Contracts Issued [Line Items]
Beginning		3,322		3,407
Net increase (decrease)	[1]	(598)		(85)
Business combination				0
Ending		₩ 2,724		₩ 3,322
[1]	Includes exchange differences effect and decrease in liabilities related to investment contracts.
[2]	Includes reserve for distribution of earnings to policyholders and reserve for loss compensation on participating insurance.

Insurance Contracts - Summary_7

Insurance Contracts - Summary of Assumptions and Basis for the Insurance Liability Adequacy Test (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
KB Life Insurance Co., Ltd. | Discount rate
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Estimated investment yield based on the interest rate scenario provided by the Financial Supervisory Service adjusted by risk spread	Estimated investment yield based on the interest rate scenario provided by the Financial Supervisory Service adjusted by risk spread
KB Life Insurance Co., Ltd. | Discount rate | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	(3.39%)	(3.62%)
KB Life Insurance Co., Ltd. | Discount rate | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	19.54%	23.48%
KB Life Insurance Co., Ltd. | Lapse ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Ratio of canceled premiums to premiums by product group, method of payment, channel, and elapsed period, based on the recent five-year experience statistics	Ratio of canceled premiums to premiums by product group, method of payment, channel, and elapsed period, based on the recent five-year experience statistics
KB Life Insurance Co., Ltd. | Lapse ratio | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	0.00%	0.00%
KB Life Insurance Co., Ltd. | Lapse ratio | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	65.57%	65.50%
KB Life Insurance Co., Ltd. | Loss ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Ratio of number of accidents to the number of holding contracts, by collateral, gender, and elapsed period, based on the recent seven-year experience statistics	Ratio of number of accidents to the number of holding contracts, by collateral, gender, and elapsed period, based on the recent seven-year experience statistics
KB Life Insurance Co., Ltd. | Loss ratio | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	22.00%	24.00%
KB Life Insurance Co., Ltd. | Loss ratio | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	162.00%	156.00%
General Insurance | Lapse ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	0.90%	1.10%
Basis	Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years	Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years
General Insurance | Sales cost ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	6.30%	6.50%
Basis	Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums)	Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums)
General Insurance | Maintenance cost ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	10.50%	10.70%
Basis	Ratio of maintenance cost to earned premiums by type of contracts for the preceding year	Ratio of maintenance cost to earned premiums by type of contracts for the preceding year
General Insurance | Claim survey cost ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	4.70%	4.70%
Basis	Ratio of claim survey cost to insurance claim payments by type of contracts for the preceding three years	Ratio of claim survey cost to insurance claim payments by type of contracts for the preceding three years
General Insurance | Loss ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	78.50%	71.00%
Basis	Ratio of final loss incurred to earned premiums by type of contracts for the preceding five years	Ratio of final loss incurred to earned premiums by type of contracts for the preceding five years
Automobile insurance | Lapse ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	4.70%	4.60%
Basis	Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years	Ratio of surrender value to direct insurance premiums by type of contracts for the preceding five years
Automobile insurance | Sales cost ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	7.60%	8.10%
Basis	Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums)	Ratio of sales cost to direct insurance premiums by type of contracts for the preceding year (applicable only to unpaid premiums)
Automobile insurance | Maintenance cost ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	8.80%	9.00%
Basis	Ratio of maintenance cost to earned premiums by type of collaterals for the preceding year	Ratio of maintenance cost to earned premiums by type of collaterals for the preceding year
Automobile insurance | Claim survey cost ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	8.10%	8.40%
Basis	Ratio of claim survey cost to insurance claim payments by type of collaterals for the preceding three years	Ratio of claim survey cost to insurance claim payments by type of collaterals for the preceding three years
Automobile insurance | Loss ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	78.20%	78.20%
Basis	Ratio of final loss incurred to earned premiums by type of collaterals for the preceding five years	Ratio of final loss incurred to earned premiums by type of collaterals for the preceding five years
Prudential Life Insurance Company of Korea Ltd. | Discount rate
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by the Financial Supervisory Service	Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by the Financial Supervisory Service
Prudential Life Insurance Company of Korea Ltd. | Discount rate | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	(3.39%)	(3.98%)
Prudential Life Insurance Company of Korea Ltd. | Discount rate | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	19.54%	23.96%
Prudential Life Insurance Company of Korea Ltd. | Lapse ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Calculated based on the amount of insurance coverage by elapsed period based on the recent five-year experience statistics	Calculated based on the amount of insurance coverage by elapsed period based on the recent five-year experience statistics
Prudential Life Insurance Company of Korea Ltd. | Lapse ratio | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	1.00%	2.00%
Prudential Life Insurance Company of Korea Ltd. | Lapse ratio | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	26.00%	28.00%
Prudential Life Insurance Company of Korea Ltd. | Risk Rate
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Calculated by ratio of insurance claim payments to risk premiums by elapsed period based on the recent five-year experience statistics	Calculated by ratio of insurance claim payments to risk premiums by elapsed period based on the recent five-year experience statistics
Prudential Life Insurance Company of Korea Ltd. | Risk Rate | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	28.00%	21.00%
Prudential Life Insurance Company of Korea Ltd. | Risk Rate | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	545.00%	312.00%
Long-term Insurance | Discount rate
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by director of the Financial Supervisory Service	Calculated by applying an interest rate scenario which is a risk-free rate scenario adjusted by liquidity premium presented by director of the Financial Supervisory Service
Long-term Insurance | Discount rate | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	(3.39%)	(3.98%)
Long-term Insurance | Discount rate | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	19.54%	23.96%
Long-term Insurance | Expense ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	6.25%	6.46%
Basis	Calculated using future expense plan based on the recent one-year experience statistics	Calculated using future expense plan based on the recent one-year experience statistics
Long-term Insurance | Lapse ratio
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Calculated based on the recent five-year experience statistics	Calculated based on the recent five-year experience statistics
Long-term Insurance | Lapse ratio | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	1.49%	1.48%
Long-term Insurance | Lapse ratio | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	35.98%	35.44%
Long-term Insurance | Risk Rate
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Basis	Calculated by ratio of insurance claim payments to risk premiums based on the recent seven-year experience statistics	Calculated by ratio of insurance claim payments to risk premiums based on the recent seven-year experience statistics
Long-term Insurance | Risk Rate | Bottom Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	7.40%	11.90%
Long-term Insurance | Risk Rate | Top Of Range Member
Assumptions And Basis For Insurance Liability Adequacy Test [Line Items]
Assumptions(%)	1143.80%	1055.20%

Insurance Contracts - Summary_8

Insurance Contracts - Summary of Results of the Insurance Liability Adequacy Test (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Non-life insurance
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities	[1]	₩ 23,680,213	₩ 22,716,408
Estimated adequate liabilities		16,036,743	15,353,469
Shortfall(surplus)		7,643,470	7,362,939
General Insurance [Member]
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities	[1]	465,812	461,227
Estimated adequate liabilities		437,555	391,040
Shortfall(surplus)		28,257	70,187
K B Life Insurance Co., Ltd. [Member]
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities		7,338,543	6,878,076
Estimated adequate liabilities		6,132,743	6,284,334
Shortfall(surplus)		1,205,800	593,742
K B Life Insurance Co., Ltd. [Member] | Fixed interest type Participating
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities		30,828	30,447
Estimated adequate liabilities		51,443	57,162
Shortfall(surplus)		(20,615)	(26,715)
K B Life Insurance Co., Ltd. [Member] | Fixed interest type Non-participating
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities		664,569	395,766
Estimated adequate liabilities		5,876	66,380
Shortfall(surplus)		658,693	329,386
K B Life Insurance Co., Ltd. [Member] | Variable interest type Participating
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities		896,754	970,376
Estimated adequate liabilities		913,067	1,010,383
Shortfall(surplus)		(16,313)	(40,007)
K B Life Insurance Co., Ltd. [Member] | Variable interest type Non-participating
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities		5,754,214	5,508,172
Estimated adequate liabilities		5,263,775	5,275,939
Shortfall(surplus)		490,439	232,233
K B Life Insurance Co., Ltd. [Member] | Varibale type
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities		(7,822)	(26,685)
Estimated adequate liabilities		(101,418)	(125,530)
Shortfall(surplus)		93,596	98,845
Prudential Life Insurance Company of Korea Ltd. [Member]
Results Of Insurance Liability Adequacy Test [Line Items]
Shortfall(surplus)		2,187,096	805,510
Prudential Life Insurance Company of Korea Ltd. [Member] | Fixed interest type Participating
Results Of Insurance Liability Adequacy Test [Line Items]
Shortfall(surplus)		(7,687)	(14,701)
Prudential Life Insurance Company of Korea Ltd. [Member] | Fixed interest type Non-participating
Results Of Insurance Liability Adequacy Test [Line Items]
Shortfall(surplus)		787,200	(865,083)
Prudential Life Insurance Company of Korea Ltd. [Member] | Variable interest type Non-participating
Results Of Insurance Liability Adequacy Test [Line Items]
Shortfall(surplus)		128,963	100,825
Prudential Life Insurance Company of Korea Ltd. [Member] | Varibale type
Results Of Insurance Liability Adequacy Test [Line Items]
Shortfall(surplus)		1,278,620	1,584,469
Automobile insurance
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities	[1]	1,401,462	1,363,104
Estimated adequate liabilities		1,322,026	1,290,439
Shortfall(surplus)		79,436	72,665
Long-term Insurance
Results Of Insurance Liability Adequacy Test [Line Items]
Recognized liabilities	[1]	21,812,939	20,892,077
Estimated adequate liabilities		14,277,162	13,671,990
Shortfall(surplus)		₩ 7,535,777	₩ 7,220,087
[1]	In the case of long-term insurance, premium reserve and unearned premium reserve are recognized; the premium reserve is the amount of subtracting deferred acquisition costs and insurance contract loans from the net insurance premium reserve in accordance with Article 6-3 of the Regulations on Supervision of Insurance Business.

Insurance Contracts - Summary_9

Insurance Contracts - Summary of Insurance Income and Expenses (Details) $ in Thousands, ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Disclosure Of Insurance Income And Expenses
Sub-total	₩ 16,107,858	$ 13,587,396	₩ 14,386,640	₩ 12,317,182
Premium income	14,684,383		12,872,727	11,173,367
Reinsurance income	990,437		823,500	850,871
Reversal of policy reserves	599		85	993
Separate account income	286,967		216,485	216,429
Income from change in reinsurance assets	135,159		467,729	42,432
Other insurance income	10,313		6,114	33,090
Sub-total	15,551,147	$ 13,117,796	14,086,647	12,017,670
Insurance claims paid	5,777,899		5,264,829	5,046,772
Refunds of surrender value	4,032,209		3,286,150	2,870,543
Dividend expenses	14,038		11,661	9,902
Reinsurance expenses	1,163,056		1,127,304	1,018,007
Provision for policy reserves	2,761,735		2,709,903	1,547,264
Separate account expenses	112,180		113,703	139,810
Administration expenses	644,947		563,085	453,016
Amortization of deferred acquisition costs	819,154		767,633	679,279
Expenses from change in reinsurance assets	0		163	314
Claim survey expenses paid	60,234		58,873	52,123
Other insurance expenses	165,695		183,343	200,640
Net insurance income	₩ 556,711		₩ 299,993	₩ 299,512

Insurance Contracts - Summar_10

Insurance Contracts - Summary of Insurance Risk Management (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
KB Insurance Co., Ltd. | Non-life insurance
Disclosure Of Nature And Extent Of Risks Arising From Insurance Contracts [Line Items]
Purposes, policies and procedures to manage risk arising from insurance contracts	The risks associated with insurance contracts that the Group faces are insurance actuarial risk and underwriting risk. Each risk occurs due to insurance contract’s pricing and conditions of underwriting. In order to minimize the possibility of acquiring a bad contract, the Group has established and operated detailed underwriting guidelines and underwriting procedures by insurance type that specify detailed underwriting conditions according to the type of risk covered through pre-analysis of insured property. In addition, the Group is making efforts to reduce insurance actuarial risk by follow-up measures such as adjustments of premium rate, changes of sales conditions, termination of selling specific product, development of new product, and others through comparing and analyzing the expected risk level at the date of pricing and actual risk level after the acceptance. The Group has prepared a process to minimize management risk other than insurance actuarial risk and underwriting risk by operating a committee that shares opinions on underwriting policies and premium rate policies and decides important matters. In addition, by establishing a reinsurance operating strategy according to the reinsurance operating standards, the Group is preparing for the possibility of incurring high claim expenses at once due to unexpected catastrophic accidents while maintaining an appropriate holding level considering the solvency of the Group. The Group supports the protection and stable interests of policyholders, and comprehensively manages risks to maximize corporate value in the mid to long term.	The risks associated with insurance contracts that the Group faces are insurance actuarial risk and underwriting risk. Each risk occurs due to insurance contract’s pricing and conditions of underwriting. In order to minimize the possibility of acquiring a bad contract, the Group has established and operated detailed underwriting guidelines and underwriting procedures by insurance type that specify detailed underwriting conditions according to the type of risk covered through pre-analysis of insured property. In addition, the Group is making efforts to reduce insurance actuarial risk by follow-up measures such as adjustments of premium rate, changes of sales conditions, termination of selling specific product, development of new product, and others through comparing and analyzing the expected risk level at the date of pricing and actual risk level after the acceptance. The Group has prepared a process to minimize management risk other than insurance actuarial risk and underwriting risk by operating a committee that shares opinions on underwriting policies and premium rate policies and decides important matters. In addition, by establishing a reinsurance operating strategy according to the reinsurance operating standards, the Group is preparing for the possibility of incurring high claim expenses at once due to unexpected catastrophic accidents while maintaining an appropriate holding level considering the solvency of the Group. The Group supports the protection and stable interests of policyholders, and comprehensively manages risks to maximize corporate value in the mid to long term.
KB Life Insurance Co., Ltd. | Life insurance
Disclosure Of Nature And Extent Of Risks Arising From Insurance Contracts [Line Items]
Concentration of insurance risk and reinsurance policy	The Group is using reinsurance to mitigate the concentration of insurance risk and increase capital management efficiency using advanced techniques. The reinsurance guidelines are operated separately into individual contracts and group contracts, and reinsurance is ceded through the following process:     (a) In the decision-making process of launching a new product, the Group decides on ceding reinsurance. Subsequently, the Group selects the reinsurer through bidding, and decides whether to reinsure or not through agreements with the relevant departments, and final approval by executive of department in charge.     (b) The reinsurance department analyzes the object of reinsurance, the maximum limit of reinsurance, and the loss ratio through consultation with the relevant departments.	The Group is using reinsurance to mitigate the concentration of insurance risk and increase capital management efficiency using advanced techniques. The reinsurance guidelines are operated separately into individual contracts and group contracts, and reinsurance is ceded through the following process:     (a) In the decision-making process of launching a new product, the Group decides on ceding reinsurance. Subsequently, the Group selects the reinsurer through bidding, and decides whether to reinsure or not through agreements with the relevant departments, and final approval by executive of department in charge.     (b) The reinsurance department analyzes the object of reinsurance, the maximum limit of reinsurance, and the loss ratio through consultation with the relevant departments.

Insurance Contracts - Summar_11

Insurance Contracts - Summary of Exposure to Insurance Price Risk (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Non Life Insurance Price Risk [Line Items]
Direct insurance	₩ 6,828,525	₩ 6,383,735
Reinsurance assumed	93,191	79,429
Reinsurance ceded	(1,106,175)	(1,100,622)
Total	5,815,541	5,362,542
General Insurance
Disclosure Of Non Life Insurance Price Risk [Line Items]
Direct insurance	1,161,427	1,088,791
Reinsurance assumed	93,191	79,429
Reinsurance ceded	(630,231)	(663,750)
Total	624,387	504,470
Automobile insurance
Disclosure Of Non Life Insurance Price Risk [Line Items]
Direct insurance	2,538,277	2,491,412
Reinsurance assumed	0	0
Reinsurance ceded	(13,683)	(21,433)
Total	2,524,594	2,469,979
Long-term Insurance
Disclosure Of Non Life Insurance Price Risk [Line Items]
Direct insurance	3,128,821	2,803,532
Reinsurance assumed	0	0
Reinsurance ceded	(462,261)	(415,439)
Total	₩ 2,666,560	₩ 2,388,093

Insurance Contracts - Summar_12

Insurance Contracts - Summary of Loss Development Tables for Non-Life Insurance (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	₩ 1,112,723	₩ 967,498
Gross cumulative claim payments (B)	876,063	747,072
Difference (A-B)	236,660	220,426
After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	10,282,470	9,706,572
Gross cumulative claim payments (B)	8,535,308	8,058,642
Difference (A-B)	1,747,162	1,647,930
After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	10,076,529	8,741,035
Gross cumulative claim payments (B)	9,685,693	8,373,482
Difference (A-B)	390,836	367,553
After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	979,513	873,840
Gross cumulative claim payments (B)	893,533	799,967
Difference (A-B)	85,980	73,873
After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	8,601,032	8,162,238
Gross cumulative claim payments (B)	8,310,028	7,889,761
Difference (A-B)	291,004	272,477
After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	10,825,380	9,465,795
Gross cumulative claim payments (B)	10,735,807	9,375,248
Difference (A-B)	89,573	90,547
After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	719,261	622,445
Gross cumulative claim payments (B)	688,876	591,739
Difference (A-B)	30,385	30,706
After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	7,019,867	6,589,686
Gross cumulative claim payments (B)	6,884,458	6,466,455
Difference (A-B)	135,409	123,231
After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	8,652,177	7,469,136
Gross cumulative claim payments (B)	8,610,434	7,426,879
Difference (A-B)	41,743	42,257
After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	456,939	384,466
Gross cumulative claim payments (B)	440,097	369,578
Difference (A-B)	16,842	14,888
After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	5,414,685	5,137,820
Gross cumulative claim payments (B)	5,349,679	5,074,686
Difference (A-B)	65,006	63,134
After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	6,423,035	5,576,258
Gross cumulative claim payments (B)	6,401,337	5,557,422
Difference (A-B)	21,698	18,836
After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	207,252	180,160
Gross cumulative claim payments (B)	202,548	175,063
Difference (A-B)	4,704	5,097
After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	3,938,725	3,779,268
Gross cumulative claim payments (B)	3,900,843	3,747,521
Difference (A-B)	37,882	31,747
After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	4,473,333	3,900,047
Gross cumulative claim payments (B)	4,465,721	3,892,929
Difference (A-B)	7,612	7,118
After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	2,580,221	2,485,525
Gross cumulative claim payments (B)	2,553,375	2,470,416
Difference (A-B)	26,846	15,109
After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	2,783,812	2,396,855
Gross cumulative claim payments (B)	2,779,932	2,395,026
Difference (A-B)	3,880	1,829
After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,282,673	1,217,006
Gross cumulative claim payments (B)	1,264,247	1,210,632
Difference (A-B)	18,426	6,374
After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,275,520	1,124,628
Gross cumulative claim payments (B)	1,274,908	1,123,868
Difference (A-B)	612	760
2014.1.1 ~ 2014.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,174,611
Gross cumulative claim payments (B)		969,211
2014.1.1 ~ 2014.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		789,088
Gross cumulative claim payments (B)		744,944
2014.1.1 ~ 2014.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,193,833
Gross cumulative claim payments (B)		1,150,462
2014.1.1 ~ 2014.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,083,049
Gross cumulative claim payments (B)		1,065,792
2014.1.1 ~ 2014.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,205,524
Gross cumulative claim payments (B)		1,180,953
2014.1.1 ~ 2014.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,114,820
Gross cumulative claim payments (B)		1,104,468
2014.1.1 ~ 2014.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,212,025
Gross cumulative claim payments (B)		1,196,387
2014.1.1 ~ 2014.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,119,206
Gross cumulative claim payments (B)		1,114,341
2014.1.1 ~ 2014.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,212,162
Gross cumulative claim payments (B)		1,204,580
2014.1.1 ~ 2014.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,122,191
Gross cumulative claim payments (B)		1,119,531
2014.1.1 ~ 2014.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,214,524
Gross cumulative claim payments (B)		1,208,421
2014.1.1 ~ 2014.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,123,240
Gross cumulative claim payments (B)		1,122,378
2014.1.1 ~ 2014.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,217,006
Gross cumulative claim payments (B)		1,210,632
2014.1.1 ~ 2014.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		1,124,628
Gross cumulative claim payments (B)		1,123,868
2015.1.1 ~ 2015.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,227,107	1,227,106
Gross cumulative claim payments (B)	1,020,975	1,020,975
2015.1.1 ~ 2015.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	885,476	885,476
Gross cumulative claim payments (B)	836,472	836,471
2015.1.1 ~ 2015.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,245,781	1,245,780
Gross cumulative claim payments (B)	1,198,240	1,198,241
2015.1.1 ~ 2015.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,219,394	1,219,394
Gross cumulative claim payments (B)	1,205,130	1,205,130
2015.1.1 ~ 2015.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,256,059	1,256,058
Gross cumulative claim payments (B)	1,228,357	1,228,357
2015.1.1 ~ 2015.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,256,051	1,256,051
Gross cumulative claim payments (B)	1,248,475	1,248,475
2015.1.1 ~ 2015.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,263,044	1,263,044
Gross cumulative claim payments (B)	1,245,780	1,245,779
2015.1.1 ~ 2015.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,266,881	1,266,881
Gross cumulative claim payments (B)	1,262,528	1,262,528
2015.1.1 ~ 2015.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,267,142	1,267,142
Gross cumulative claim payments (B)	1,254,186	1,254,187
2015.1.1 ~ 2015.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,270,967	1,270,967
Gross cumulative claim payments (B)	1,269,557	1,269,557
2015.1.1 ~ 2015.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,271,000	1,271,001
Gross cumulative claim payments (B)	1,261,995	1,261,995
2015.1.1 ~ 2015.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,273,615	1,273,615
Gross cumulative claim payments (B)	1,272,648	1,272,648
2015.1.1 ~ 2015.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,282,673	0
Gross cumulative claim payments (B)	1,264,247	0
2015.1.1 ~ 2015.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,275,520	0
Gross cumulative claim payments (B)	1,274,908	0
2016.1.1 ~ 2016.12.31 | After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		145,618
Gross cumulative claim payments (B)		108,098
2016.1.1 ~ 2016.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,276,939	1,276,939
Gross cumulative claim payments (B)	1,052,830	1,052,830
2016.1.1 ~ 2016.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,064,744	1,064,744
Gross cumulative claim payments (B)	1,017,243	1,017,243
2016.1.1 ~ 2016.12.31 | After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		167,818
Gross cumulative claim payments (B)		151,282
2016.1.1 ~ 2016.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,281,381	1,281,381
Gross cumulative claim payments (B)	1,235,656	1,235,656
2016.1.1 ~ 2016.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,437,574	1,437,573
Gross cumulative claim payments (B)	1,424,948	1,424,948
2016.1.1 ~ 2016.12.31 | After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		171,206
Gross cumulative claim payments (B)		162,059
2016.1.1 ~ 2016.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,287,728	1,287,728
Gross cumulative claim payments (B)	1,264,651	1,264,651
2016.1.1 ~ 2016.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,485,839	1,485,839
Gross cumulative claim payments (B)	1,477,415	1,477,415
2016.1.1 ~ 2016.12.31 | After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		178,265
Gross cumulative claim payments (B)		170,353
2016.1.1 ~ 2016.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,294,735	1,294,735
Gross cumulative claim payments (B)	1,282,346	1,282,346
2016.1.1 ~ 2016.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,500,403	1,500,403
Gross cumulative claim payments (B)	1,496,556	1,496,556
2016.1.1 ~ 2016.12.31 | After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)		180,160
Gross cumulative claim payments (B)		175,063
2016.1.1 ~ 2016.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,299,964	1,299,964
Gross cumulative claim payments (B)	1,288,754	1,288,754
2016.1.1 ~ 2016.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,506,889	1,506,889
Gross cumulative claim payments (B)	1,503,841	1,503,841
2016.1.1 ~ 2016.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,309,221	0
Gross cumulative claim payments (B)	1,291,380	0
2016.1.1 ~ 2016.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,510,197	0
Gross cumulative claim payments (B)	1,507,284	0
2016.1.1 ~ 2016.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2016.1.1 ~ 2016.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2017.1.1 ~ 2017.12.31 | After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	169,234	168,409
Gross cumulative claim payments (B)	133,254	132,430
2017.1.1 ~ 2017.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,342,998	1,342,998
Gross cumulative claim payments (B)	1,104,158	1,104,158
2017.1.1 ~ 2017.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,184,224	1,184,224
Gross cumulative claim payments (B)	1,130,868	1,130,868
2017.1.1 ~ 2017.12.31 | After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	201,406	200,699
Gross cumulative claim payments (B)	185,107	184,333
2017.1.1 ~ 2017.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,348,828	1,348,828
Gross cumulative claim payments (B)	1,306,235	1,306,235
2017.1.1 ~ 2017.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,614,903	1,614,903
Gross cumulative claim payments (B)	1,599,227	1,599,227
2017.1.1 ~ 2017.12.31 | After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	205,075	204,368
Gross cumulative claim payments (B)	194,511	193,780
2017.1.1 ~ 2017.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,358,867	1,358,867
Gross cumulative claim payments (B)	1,335,962	1,335,962
2017.1.1 ~ 2017.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,670,929	1,670,929
Gross cumulative claim payments (B)	1,662,978	1,662,978
2017.1.1 ~ 2017.12.31 | After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	206,856	206,201
Gross cumulative claim payments (B)	199,926	199,225
2017.1.1 ~ 2017.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,368,016	1,368,016
Gross cumulative claim payments (B)	1,350,174	1,350,174
2017.1.1 ~ 2017.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,689,768	1,689,768
Gross cumulative claim payments (B)	1,683,997	1,683,997
2017.1.1 ~ 2017.12.31 | After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	207,252	0
Gross cumulative claim payments (B)	202,548	0
2017.1.1 ~ 2017.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,371,619	0
Gross cumulative claim payments (B)	1,357,903	0
2017.1.1 ~ 2017.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,695,477	0
Gross cumulative claim payments (B)	1,692,323	0
2017.1.1 ~ 2017.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2017.1.1 ~ 2017.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2017.1.1 ~ 2017.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2017.1.1 ~ 2017.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	200,968	200,968
Gross cumulative claim payments (B)	153,770	153,770
2018.1.1 ~ 2018.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,468,784	1,468,784
Gross cumulative claim payments (B)	1,224,820	1,224,820
2018.1.1 ~ 2018.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,372,706	1,372,706
Gross cumulative claim payments (B)	1,319,613	1,319,613
2018.1.1 ~ 2018.12.31 | After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	241,471	241,474
Gross cumulative claim payments (B)	217,955	217,955
2018.1.1 ~ 2018.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,471,807	1,471,807
Gross cumulative claim payments (B)	1,428,973	1,428,973
2018.1.1 ~ 2018.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,881,046	1,881,046
Gross cumulative claim payments (B)	1,868,434	1,868,434
2018.1.1 ~ 2018.12.31 | After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	246,499	246,871
Gross cumulative claim payments (B)	235,900	235,900
2018.1.1 ~ 2018.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,481,509	1,481,509
Gross cumulative claim payments (B)	1,456,532	1,456,532
2018.1.1 ~ 2018.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,941,497	1,941,497
Gross cumulative claim payments (B)	1,933,543	1,933,543
2018.1.1 ~ 2018.12.31 | After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	250,083	0
Gross cumulative claim payments (B)	240,171	0
2018.1.1 ~ 2018.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,488,890	0
Gross cumulative claim payments (B)	1,471,379	0
2018.1.1 ~ 2018.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,965,983	0
Gross cumulative claim payments (B)	1,958,256	0
2018.1.1 ~ 2018.12.31 | After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2018.1.1 ~ 2018.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	219,419	219,881
Gross cumulative claim payments (B)	185,645	185,645
2019.1.1 ~ 2019.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,591,793	1,591,793
Gross cumulative claim payments (B)	1,332,849	1,332,849
2019.1.1 ~ 2019.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,626,481	1,626,481
Gross cumulative claim payments (B)	1,574,696	1,574,696
2019.1.1 ~ 2019.12.31 | After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	263,105	263,849
Gross cumulative claim payments (B)	246,397	246,397
2019.1.1 ~ 2019.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,620,609	1,620,609
Gross cumulative claim payments (B)	1,570,194	1,570,194
2019.1.1 ~ 2019.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	2,229,830	2,229,830
Gross cumulative claim payments (B)	2,211,717	2,211,717
2019.1.1 ~ 2019.12.31 | After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	267,687	0
Gross cumulative claim payments (B)	258,465	0
2019.1.1 ~ 2019.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,635,704	0
Gross cumulative claim payments (B)	1,598,956	0
2019.1.1 ~ 2019.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	2,297,861	0
Gross cumulative claim payments (B)	2,288,023	0
2019.1.1 ~ 2019.12.31 | After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2019.1.1 ~ 2019.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	232,622	232,622
Gross cumulative claim payments (B)	167,129	167,129
2020.1.1 ~ 2020.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,624,341	1,624,341
Gross cumulative claim payments (B)	1,353,799	1,353,799
2020.1.1 ~ 2020.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,818,316	1,818,316
Gross cumulative claim payments (B)	1,749,647	1,749,647
2020.1.1 ~ 2020.12.31 | After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	273,531	0
Gross cumulative claim payments (B)	244,074	0
2020.1.1 ~ 2020.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,632,626	0
Gross cumulative claim payments (B)	1,570,730	0
2020.1.1 ~ 2020.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	2,442,633	0
Gross cumulative claim payments (B)	2,426,351	0
2020.1.1 ~ 2020.12.31 | After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	0
2020.1.1 ~ 2020.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0	0
Gross cumulative claim payments (B)	0	₩ 0
2021.1.1 ~ 2021.12.31 | After 1 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	290,480
Gross cumulative claim payments (B)	236,265
2021.1.1 ~ 2021.12.31 | After 1 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	1,750,508
Gross cumulative claim payments (B)	1,445,877
2021.1.1 ~ 2021.12.31 | After 1 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	2,124,582
Gross cumulative claim payments (B)	2,057,154
2021.1.1 ~ 2021.12.31 | After 2 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 2 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 2 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 3 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 3 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 3 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 4 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 4 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 4 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 5 year | General Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 5 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 5 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 6 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 6 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 7 year | Automobile insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	0
2021.1.1 ~ 2021.12.31 | After 7 year | Long-term Insurance
Short Duration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Estimate of gross ultimate claims (A)	0
Gross cumulative claim payments (B)	₩ 0

Insurance Contracts - Summar_13

Insurance Contracts - Summary of Sensitivity to Insurance Risk (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
KB Insurance Co., Ltd. | Non-life insurance | Lapse ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 337,969	₩ 351,205
KB Insurance Co., Ltd. | Non-life insurance | Loss ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 6,065,429	₩ 5,203,896
KB Insurance Co., Ltd. | Non-life insurance | Expense ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 503,132	₩ 388,406
KB Insurance Co., Ltd. | Non-life insurance | Discount rate
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	(0.50%)	(0.50%)
Effect on LAT	₩ 1,985,421	₩ 2,097,400
KB Life Insurance Co., Ltd. | Life insurance | Lapse ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 82,811	₩ 51,370
KB Life Insurance Co., Ltd. | Life insurance | Claim ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 50,899	₩ 31,020
KB Life Insurance Co., Ltd. | Life insurance | Expense ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 53,511	₩ 33,616
KB Life Insurance Co., Ltd. | Life insurance | Discount rate
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	(0.50%)	(0.50%)
Effect on LAT	₩ 482,638	₩ 511,913
Prudential Life Insurance Company of Korea Ltd. | Life insurance | Lapse ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 114,427	₩ 158,219
Prudential Life Insurance Company of Korea Ltd. | Life insurance | Claim ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 571,446	₩ 719,689
Prudential Life Insurance Company of Korea Ltd. | Life insurance | Expense ratio
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	10.00%	10.00%
Effect on LAT	₩ 157,924	₩ 213,675
Prudential Life Insurance Company of Korea Ltd. | Life insurance | Discount rate
Disclosure Of Sensitivity Analysis Of Non Life Insurance Risk [Line Items]
Assumption change	(0.50%)	(0.50%)
Effect on LAT	₩ 1,563,571	₩ 1,687,116

Insurance Contracts - Summar_14

Insurance Contracts - Summary of Maturity Structure of Premium Reserve Related to Liquidity Risk (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	₩ 26,109,760	₩ 25,012,766
Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	655,198	574,527
Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	25,454,562	24,438,239
Long-term insurance non-participating
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	22,145,242	21,034,333
Long-term insurance non-participating | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	647,899	567,047
Long-term insurance non-participating | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	21,497,343	20,467,286
Annuity
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	3,964,518	3,978,433
Annuity | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	7,299	7,480
Annuity | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	3,957,219	3,970,953
Up to 1 year
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,081,588	734,239
Up to 1 year | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	121,988	70,787
Up to 1 year | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	959,600	663,452
Up to 1 year | Long-term insurance non-participating
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,081,336	733,992
Up to 1 year | Long-term insurance non-participating | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	121,988	70,782
Up to 1 year | Long-term insurance non-participating | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	959,348	663,210
Up to 1 year | Annuity
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	252	247
Up to 1 year | Annuity | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	0	5
Up to 1 year | Annuity | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	252	242
1~5 years
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,127,236	2,580,153
1~5 years | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	65,550	192,287
1~5 years | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,061,686	2,387,866
1~5 years | Long-term insurance non-participating
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,022,997	2,495,868
1~5 years | Long-term insurance non-participating | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	64,730	191,570
1~5 years | Long-term insurance non-participating | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,958,267	2,304,298
1~5 years | Annuity
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	104,239	84,285
1~5 years | Annuity | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	820	717
1~5 years | Annuity | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	103,419	83,568
5~10 years
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,024,260	2,408,432
5~10 years | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	80,014	80,295
5~10 years | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,944,246	2,328,137
5~10 years | Long-term insurance non-participating
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,614,570	2,015,713
5~10 years | Long-term insurance non-participating | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	77,880	78,092
5~10 years | Long-term insurance non-participating | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,536,690	1,937,621
5~10 years | Annuity
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	409,690	392,719
5~10 years | Annuity | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,134	2,203
5~10 years | Annuity | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	407,556	390,516
10~20 years
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,307,497	2,201,820
10~20 years | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	62,855	55,033
10~20 years | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,244,642	2,146,787
10~20 years | Long-term insurance non-participating
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	978,768	896,620
10~20 years | Long-term insurance non-participating | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	59,042	51,216
10~20 years | Long-term insurance non-participating | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	919,726	845,404
10~20 years | Annuity
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,328,729	1,305,200
10~20 years | Annuity | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	3,813	3,817
10~20 years | Annuity | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	1,324,916	1,301,383
Over 20 years
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	18,569,179	17,088,122
Over 20 years | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	324,791	176,125
Over 20 years | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	18,244,388	16,911,997
Over 20 years | Long-term insurance non-participating
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	16,447,571	14,892,140
Over 20 years | Long-term insurance non-participating | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	324,259	175,387
Over 20 years | Long-term insurance non-participating | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	16,123,312	14,716,753
Over 20 years | Annuity
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	2,121,608	2,195,982
Over 20 years | Annuity | Fixed interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	532	738
Over 20 years | Annuity | Variable interest type
Disclosure Of Non Life Insurance Premium Reserves Based On Each Residual Maturity [Line Items]
Premuim Reserve	[1]	₩ 2,121,076	₩ 2,195,244
[1]	Includes long-term investment contracts liabilities classified as investment contracts amounting to ￦106,853 million and ￦31,081 million, as of December 31, 2020 and 2021, respectively.

Insurance Contracts - Summar_15

Insurance Contracts - Summary of Credit Risk of Insurance Contracts (Details) - Non-life insurance contracts [member] - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Ceded Credit Risk [Line Items]
Reinsurance assets	[1]	₩ 1,342,615	₩ 1,199,354
Receivables from reinsurers	[2]	377,619	252,064
Total		₩ 1,720,234	₩ 1,451,418
KOREAN RE | AA
Ceded Credit Risk [Line Items]
Ratio		38.65%
MUNICH RE | AAA
Ceded Credit Risk [Line Items]
Ratio		5.75%
ALLIANZ GLOBAL | AAA
Ceded Credit Risk [Line Items]
Ratio		5.67%
[1]	Net carrying amount after impairment losses
[2]	Net carrying amount after allowances for credit losses

Insurance Contracts - Summar_16

Insurance Contracts - Summary of Exposure to Interest Rate Risk of Insurance Contract (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financial assets
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	₩ 23,382,338	₩ 22,939,099
Due from financial institutions measured at amortized cost and cash equivalents
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	81,806	160,249
Fixed interest rate type
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	489,399	501,147
Financial liabilities
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	24,736,159	23,714,814
Variable interest rate type
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	24,246,760	23,213,667
Financial assets at fair value through profit or loss
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	3,863,978	3,823,603
Financial assets at fair value through other comprehensive income
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	4,488,443	3,983,567
Securities measured at amortized cost
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	8,514,272	8,700,196
Loans measured at amortized cost
Disclosure Of Interest Risk Of Non Life Insurance Contract [Line Items]
Exposure To Interest Rate Risk	₩ 6,433,839	₩ 6,271,484

Insurance Contracts - Summar_17

Insurance Contracts - Summary of Maximum Exposures to Insurance Price Risk (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
KB Life Insurance Co., Ltd. | Life insurance
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	₩ 23,941	₩ 22,343
After reinsurance mitigation	₩ 14,690	₩ 13,825
Average Ratios Of Insurance Claims Paid Per Risk Premium Received OnThe Basis Of Exposure Before Mitigation	63.00%	65.10%
KB Life Insurance Co., Ltd. | Death
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	₩ 14,977	₩ 13,509
After reinsurance mitigation	11,976	10,409
KB Life Insurance Co., Ltd. | Disability
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	586	672
After reinsurance mitigation	296	349
KB Life Insurance Co., Ltd. | Hospitalization
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	1,124	1,213
After reinsurance mitigation	730	787
KB Life Insurance Co., Ltd. | Operation and diagnosis
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	5,088	4,809
After reinsurance mitigation	1,110	1,783
KB Life Insurance Co., Ltd. | Actual medical expense
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	1,194	1,095
After reinsurance mitigation	262	23
KB Life Insurance Co., Ltd. | Others
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	972	1,045
After reinsurance mitigation	316	474
Prudential Life Insurance Company of Korea Ltd. | Life insurance
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	379,279	366,601
After reinsurance mitigation	374,319	359,936
Prudential Life Insurance Company of Korea Ltd. | Death
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	253,325	244,975
After reinsurance mitigation	250,045	240,121
Prudential Life Insurance Company of Korea Ltd. | Disability
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	10,331	10,485
After reinsurance mitigation	10,230	9,964
Prudential Life Insurance Company of Korea Ltd. | Hospitalization
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	34,194	33,321
After reinsurance mitigation	34,194	33,321
Prudential Life Insurance Company of Korea Ltd. | Operation and diagnosis
Details Of Maximum Exposureof Insurance Price Risk Line Items [Line Items]
Before reinsurance mitigation	81,429	77,820
After reinsurance mitigation	₩ 79,850	₩ 76,530

Insurance Contracts - Summar_18

Insurance Contracts - Summary of Exposure of Market Risk Arising from Embedded Derivatives Included in Host Insurance Contracts (Details) - KB Life Insurance Co., Ltd. - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Variable Annuity
Details Of Exposure Of Market Risk Arising From Embeded Derivatives Included In Host Insurance Contracts Line Items [Line Items]
Policyholders' reserve	[1]	₩ 611,283	₩ 490,551
Guarantee reserve		3,014	2,782
Universal Life [Member]
Details Of Exposure Of Market Risk Arising From Embeded Derivatives Included In Host Insurance Contracts Line Items [Line Items]
Policyholders' reserve	[1]	78,689	90,337
Guarantee reserve		2,768	2,515
Variable saving
Details Of Exposure Of Market Risk Arising From Embeded Derivatives Included In Host Insurance Contracts Line Items [Line Items]
Policyholders' reserve	[1]	556,196	720,197
Guarantee reserve		393	504
Total [Member]
Details Of Exposure Of Market Risk Arising From Embeded Derivatives Included In Host Insurance Contracts Line Items [Line Items]
Policyholders' reserve	[1]	1,246,168	1,301,085
Guarantee reserve		₩ 6,175	₩ 5,801
[1]	Excludes the amount of the lapsed insurance reserve.

Insurance Contracts - Summar_19

Insurance Contracts - Summary of ceded reinsurance Permiums by credit rating of reinsurer (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of ceded reinsurance premiums by credit rating of reinsurer[Line Item ]
Ceded reinsurance Premium	₩ 5,223	₩ 6,444
Percentage of ceded reinsurance premiums	100.00%	100.00%
AA or higher Member
Disclosure of ceded reinsurance premiums by credit rating of reinsurer[Line Item ]
Ceded reinsurance Premium	₩ 5,223	₩ 6,444
Percentage of ceded reinsurance premiums	100.00%	100.00%
A A [Member]
Disclosure of ceded reinsurance premiums by credit rating of reinsurer[Line Item ]
Ceded reinsurance Premium	₩ 0	₩ 0
Percentage of ceded reinsurance premiums	0.00%	0.00%
BBB or lower [Member]
Disclosure of ceded reinsurance premiums by credit rating of reinsurer[Line Item ]
Ceded reinsurance Premium	₩ 0	₩ 0
Percentage of ceded reinsurance premiums	0.00%	0.00%
others Member
Disclosure of ceded reinsurance premiums by credit rating of reinsurer[Line Item ]
Ceded reinsurance Premium	₩ 0	₩ 0
Percentage of ceded reinsurance premiums	0.00%	0.00%

Insurance Contracts - Summar_20

Insurance Contracts - Summary of Maturity Structure of Premium Reserve (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve	[1]	₩ 26,109,760	₩ 25,012,766
Unearned premium reserve		1,919,307	1,869,713
5-10 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve	[1]	2,024,260	2,408,432
Over 20 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve	[1]	18,569,179	17,088,122
Life insurance
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Unearned premium reserve		9,358	9,450
KB Life Insurance Co., Ltd. | Life insurance
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		7,850,400	7,329,738
Unearned premium reserve		5,943	6,477
KB Life Insurance Co., Ltd. | Life insurance | Up to 3 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		651,638	739,485
Unearned premium reserve		156	162
KB Life Insurance Co., Ltd. | Life insurance | 3-5 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		285,623	350,639
Unearned premium reserve		0	0
KB Life Insurance Co., Ltd. | Life insurance | 5-10 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		578,102	605,931
Unearned premium reserve		24	23
KB Life Insurance Co., Ltd. | Life insurance | 10-15 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		386,515	412,563
Unearned premium reserve		0	1
KB Life Insurance Co., Ltd. | Life insurance | 15-20 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		545,270	451,074
Unearned premium reserve		0	0
KB Life Insurance Co., Ltd. | Life insurance | Over 20 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		5,403,252	4,770,046
Unearned premium reserve		5,763	6,291
Prudential Life Insurance Company of Korea Ltd. | Life insurance
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		14,122,125	13,237,208
Unearned premium reserve		4,304	3,866
Prudential Life Insurance Company of Korea Ltd. | Life insurance | Up to 3 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		39,578	48,807
Unearned premium reserve		31	31
Prudential Life Insurance Company of Korea Ltd. | Life insurance | 3-5 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		40,894	37,502
Unearned premium reserve		15	16
Prudential Life Insurance Company of Korea Ltd. | Life insurance | 5-10 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		154,062	139,973
Unearned premium reserve		50	58
Prudential Life Insurance Company of Korea Ltd. | Life insurance | 10-15 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		237,021	215,470
Unearned premium reserve		51	51
Prudential Life Insurance Company of Korea Ltd. | Life insurance | 15-20 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		528,373	418,684
Unearned premium reserve		65	77
Prudential Life Insurance Company of Korea Ltd. | Life insurance | Over 20 years
Description Of Life Insurance Premium Reserves And Unearned Premium Reserves Classified Based On Each Residual Maturity [Line Items]
Premium reserve		13,122,197	12,376,772
Unearned premium reserve		₩ 4,092	₩ 3,633
[1]	Includes long-term investment contracts liabilities classified as investment contracts amounting to ￦106,853 million and ￦31,081 million, as of December 31, 2020 and 2021, respectively.

Insurance Contracts - Summar_21

Insurance Contracts - Summary of Financial Assets Subject to the Overlay Approach (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial assets to which overlay approach is applied [line items]
Financial assets to which overlay approach is applied	₩ 8,343,604	₩ 7,739,106
Due from financial institutions
Disclosure of financial assets to which overlay approach is applied [line items]
Financial assets to which overlay approach is applied	80,179	70,312
Debt securities
Disclosure of financial assets to which overlay approach is applied [line items]
Financial assets to which overlay approach is applied	8,023,999	7,363,457
Equity securities
Disclosure of financial assets to which overlay approach is applied [line items]
Financial assets to which overlay approach is applied	₩ 239,426	₩ 305,337

Insurance Contracts - Summar_22

Insurance Contracts - Summary of Changes of Net Gains (Losses) on Overlay Adjustment (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Changes Of Net Losses On Overlay Adjustment [Abstract]
Beginning	₩ 339,202	₩ 187,077
Recognition of other comprehensive income due to acquisition and valuation	185,906	177,500
Reclassification to profit or loss due to disposal	(65,624)	(25,375)
Ending	₩ 459,484	₩ 339,202

Statement of Cash Flows - Summa

Statement of Cash Flows - Summary of Cash and Cash Equivalents (Details) $ in Thousands, ₩ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2020USD ($)	Dec. 31, 2019KRW (₩)	Dec. 31, 2018KRW (₩)
Cash and cash equivalents if different from statement of financial position [abstract]
Cash	₩ 2,496,941		₩ 2,560,970
Checks issued by other banks	150,047		327,781
Due from the Bank of Korea	17,579,643		12,340,532
Due from other financial institutions	10,782,743		10,379,559
Sub-total	31,009,374		25,608,842
Due from financial institutions measured at fair value through profit or loss	200,743		100,094
Sub-total	31,210,117		25,708,936
Restricted due from financial institutions	(20,754,706)		(15,303,363)
Due from financial institutions with original maturities over three months	(1,346,951)		(1,720,481)
Sub-total	(22,101,657)		(17,023,844)
Total	₩ 9,108,460	$ 7,683,222	₩ 8,685,092	$ 7,326,100	₩ 6,123,725	₩ 6,642,816

Statement of Cash Flows - Sum_2

Statement of Cash Flows - Summary of Significant Noncash Transactions (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Significant Non Cash Transactions Abstract [Abstract]
Write-offs of loans	₩ 1,086,296	₩ 1,283,071	₩ 1,188,584
Changes in financial investments due to debt-for-equity swap	327	13,820	104,815
Changes in accumulated other comprehensive income from valuation of financial instruments at fair value through other comprehensive income	507,175	496,159	35,490
Changes in accumulated other comprehensive income from valuation of investments in associates	165	(6,978)	7,695
Reclassification to assets of a disposal group held for sale	₩ 171,749	₩ 0	₩ 0

Statement of Cash Flows - Sum_3

Statement of Cash Flows - Summary of Cash Inflows And Outflows From Income Tax Interests And Dividends (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Inflows And Outflows From Income Tax Interests And Dividends Abstract [Abstract]
Income tax paid	₩ 1,586,750	₩ 1,119,252	₩ 1,223,084
Interest received	15,152,796	14,986,532	14,936,705
Interest paid	4,062,469	5,266,158	5,365,595
Dividends received	290,089	187,699	185,846
Dividends paid	₩ 1,053,416	₩ 883,952	₩ 766,249

Statement of Cash Flows - Chang

Statement of Cash Flows - Changes In Liabilities Arising From Financing Activities (Details) $ in Thousands, ₩ in Millions		12 Months Ended
		Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2020KRW (₩)	Dec. 31, 2019KRW (₩)
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning		₩ 121,950,460		₩ 95,611,967
Changes in liabilities arising from financing activities [abstract]
Net cash flows		10,732,581		24,849,445
Non-cash changes
Acquisition(Disposal)		166,336		236,860
Exchange differences		877,384		(68,893)
Changes in fair value		(185,665)		(581,066)
Subsidiaries		(327,518)		2,132,683
Others		(43,258)		(230,536)
Ending		133,170,320		121,950,460	₩ 95,611,967
Net cash flows from changes in ownership of subsidiaries		374,992	$ 316,316	(1,951,245)	91,592
Derivatives held for hedging
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning	[1]	(57,196)		187,101
Changes in liabilities arising from financing activities [abstract]
Net cash flows	[1]	5,870		(16,202)
Non-cash changes
Acquisition(Disposal)	[1]	0		0
Exchange differences	[1]	246,352		(102,347)
Changes in fair value	[1]	(70,225)		10,553
Subsidiaries	[1]	0		1,166
Others	[1]	(150,084)		(137,467)
Ending	[1]	(25,283)		(57,196)	187,101
Borrowings
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning		112,587,843		88,754,443
Changes in liabilities arising from financing activities [abstract]
Net cash flows		11,579,036		22,627,875
Non-cash changes
Acquisition(Disposal)		0		0
Exchange differences		630,913		(217,461)
Changes in fair value		(115,440)		(591,619)
Subsidiaries		(329,512)		2,131,517
Others		(10,278)		(116,912)
Ending		124,342,562		112,587,843	88,754,443
Due to trust accounts
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning		7,542,955		5,216,460
Changes in liabilities arising from financing activities [abstract]
Net cash flows		(509,106)		2,326,495
Non-cash changes
Acquisition(Disposal)		0		0
Exchange differences		0		0
Changes in fair value		0		0
Subsidiaries		0		0
Others		0		0
Ending		7,033,849		7,542,955	5,216,460
Changes in non-controlling interests
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning		857,783		585,407
Changes in liabilities arising from financing activities [abstract]
Net cash flows		(24,145)		(25,658)
Non-cash changes
Acquisition(Disposal)		0		0
Exchange differences		0		250,904
Changes in fair value		0		0
Subsidiaries		1,994		0
Others		(2,294)		47,130
Ending		833,338		857,783	585,407
Others
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning		1,019,075		868,556
Changes in liabilities arising from financing activities [abstract]
Net cash flows		(319,074)		(63,065)
Non-cash changes
Acquisition(Disposal)		166,336		236,860
Exchange differences		119		11
Changes in fair value		0		0
Subsidiaries		0		0
Others		119,398		(23,287)
Ending		₩ 985,854		₩ 1,019,075	₩ 868,556
[1]	Derivatives held for hedging purposes are the net amount after offsetting liabilities and assets.

Contingent Liabilities and Co_3

Contingent Liabilities and Commitments - Summary of Details Payment Guarantees (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)	Dec. 31, 2020KRW (₩)
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	₩ 10,866,955	₩ 9,306,787
Contingent Liability For Commitments	176,443,341	163,340,592
Confirmed acceptances and guarantees in Korean won
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	954,384	1,193,305
Corporate loan commitments
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	45,767,502	40,253,100
Law Suits As Plaintiff In The Normal Course Of The Business
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent assets	₩ 578,033
Loss Contingency Pending Claims Number	126
Acceptances of letter of credit
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	₩ 523,037	221,422
Confirmed acceptances and guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	6,481,423	6,867,686
Acceptances and guarantees for KB purchasing loan
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	136,914	144,457
Acceptances and guarantees for issuance of debenture
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	5,040	10,040
Credit line
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	5,729,798	3,522,809
Guarantees of letter of credit
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	3,551,767	2,094,989
Retail loan commitments
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	47,080,416	46,450,857
Others
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	817,470	1,048,848
Confirmed acceptances and guarantees in foreign currencies
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	4,859,773	4,916,522
Law Suits As Defendant In The Normal Course Of The Business
Disclosure of contingent liabilities [line items]
Loss Contingency Damages Sought Value	533,573
Letter of guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	83,089	45,693
Purchase of securities
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	495,400	683,800
Financial Guarantees
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	6,225,198	4,206,609
Acceptances and guarantees for mortgage
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	51,053	89,302
Unconfirmed acceptances and guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	4,385,532	2,439,101
Refund guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	833,765	344,112
Credit line on credit cards
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	70,534,719	65,325,863
Law Suits Cyber Incident
Disclosure of contingent liabilities [line items]
Loss Contingency Damages Sought Value	108	108
Bid bond
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	18,874	72,037
Financail guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	667,266	757,859
Overseas debt guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	428,109	410,470
Purchase of other securities
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	₩ 6,835,506	7,104,163
Restriction period for the disposal of KB KOLAO LEASING Co., LTD equity
Disclosure of contingent liabilities [line items]
Explanation of possibility of reimbursement, contingent liabilities	In June 2013, KB Kookmin Card Co., Ltd. had an accident in which cardholders’ personal information was stolen (hereinafter referred to as “accident”) due to illegal activities by employees of personal credit information company in charge of development of the system upgrading to prevent fraudulent use of credit card. As a result, KB Kookmin Card Co., Ltd. was notified by the Financial Services Commission of the suspension of some new business for 3 months as of February 16, 2014. In respect of the accident, the Group faces 2 legal claims filed as a defendant, with an aggregate claim amount of ￦108 million as of December 31, 2020 and 2021. The Group takes out the personal information protection liability insurance as of December 31, 2021
Performance bond
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	₩ 855,247	703,826
International financing guarantees in foreign currencies
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	132,114	197,097
Refund guarantees
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	874,173	801,445
Others
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	50,950	50,950
Law Suits as invest in rental apartment of disables in Australia
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	₩ 326,500
Explanation of possibility of reimbursement, contingent liabilities	KB Securities Co., Ltd., as a sales agency, sold ￦326,500 million of private equity funds and trusts, which loans to corporations (borrower) that invest in apartment rental businesses for the disabled in Australia, to individuals and institutional investors. However, management of the fund is impossible due to the breach of contract by local borrowers in Australia, therefore there is a possibility of losses of principal to these funds subscribers. In this regard, there are three lawsuits in which the Group is a defendant as of December 31, 2021. There is a possibility that additional lawsuits will be filed in the future, but the magnitude and final outcome of the lawsuit are unpredictable.
Others
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities	₩ 2,505,353	3,072,099
Contract related to Lime Asset Management
Disclosure of contingent liabilities [line items]
Explanation of possibility of reimbursement, contingent liabilities	In relation to Lime Asset Management, KB Securities Co., Ltd. has a PIS (Portfolio Index Swap) contract, as of December 31, 2021, associated with ‘Lime Thetis Qualified Investor Private Investment Trust No.2’ and ‘Lime Pluto FI Qualified Investor Private Investment Trust No.D-1’ whose redemption were suspended during the fourth quarter of 2019. The notional amount of the underlying assets of the PIS contract is ￦191,500 million. Meanwhile, the Group sold ￦68,100 million of feeder funds of aforementioned redemption-suspended funds. On October 20, 2020, Lime Asset Management’s license as a fund manager was revoked by the Financial Supervisory Service’s sanctions review committee, and most of its redemption-suspended funds and normal funds have been transferred to Wellbridge Asset Management (the bridge management company) to continue to collect and distribute investments. It is difficult to predict whether and when the aforementioned redemption-suspended funds will be redeemed. In this regard, KB Securities Co., Ltd. faces one claim filed as a defendant as of December 31, 2021. The Group has accounted for the estimated loss due to the possibility of additional lawsuits in the future as a provision for litigations.
Notional amount	₩ 191,500
Proceeds from sale of feeder funds	₩ 68,100
Global Spread of the Covid19
Disclosure of contingent liabilities [line items]
Explanation of possibility of reimbursement, contingent liabilities	h) The proliferation of COVID-19 has had a negative impact on the global economy, which may have an impact on the expected credit losses and potential impairment of assets in a particular portfolio, and it could negatively affect the revenue generation capability of the Group as follows:     •   There is a possibility of uncertainty about the credit risk of a borrower that could be affected by COVID-19.     •   Uncertainty may arise about forward-looking macroeconomic information related to expected credit losses.
Commitments
Disclosure of contingent liabilities [line items]
Contingent Liability For Commitments	₩ 170,218,143	₩ 159,133,983

Contingent Liabilities and Co_4

Contingent Liabilities and Commitments - Summary of Payment Guarantees are Exposed to Credit Risk (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
The financial instruments applying 12-month expected credit losses
Disclosure of internal credit grades [line items]
Credit exposure	₩ 10,346,678	₩ 9,038,271
The financial instruments applying 12-month expected credit losses | Confirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	6,240,874	6,689,766
The financial instruments applying 12-month expected credit losses | Confirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	4,532,747	4,377,798
The financial instruments applying 12-month expected credit losses | Confirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	1,594,714	2,269,455
The financial instruments applying 12-month expected credit losses | Confirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	105,691	27,588
The financial instruments applying 12-month expected credit losses | Confirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	7,722	14,925
The financial instruments applying 12-month expected credit losses | Confirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	0	0
The financial instruments applying 12-month expected credit losses | Unconfirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	4,105,804	2,348,505
The financial instruments applying 12-month expected credit losses | Unconfirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	3,083,636	1,422,528
The financial instruments applying 12-month expected credit losses | Unconfirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	998,204	912,209
The financial instruments applying 12-month expected credit losses | Unconfirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	12,039	11,399
The financial instruments applying 12-month expected credit losses | Unconfirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	11,925	2,369
The financial instruments applying 12-month expected credit losses | Unconfirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Non-impaired
Disclosure of internal credit grades [line items]
Credit exposure	503,482	250,640
Non-impaired | Confirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	230,138	167,771
Non-impaired | Confirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	838	1,119
Non-impaired | Confirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	32,567	47,438
Non-impaired | Confirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	46,174	85,321
Non-impaired | Confirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	149,785	33,440
Non-impaired | Confirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	774	453
Non-impaired | Unconfirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	273,344	82,869
Non-impaired | Unconfirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	3,391	771
Non-impaired | Unconfirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	39,224	28,506
Non-impaired | Unconfirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	34,797	23,069
Non-impaired | Unconfirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	195,794	29,934
Non-impaired | Unconfirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	138	589
The financial instruments applying lifetime expected credit losses
Disclosure of internal credit grades [line items]
Credit exposure	10,866,955	9,306,787
The financial instruments applying lifetime expected credit losses | Confirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	6,481,423	6,867,686
The financial instruments applying lifetime expected credit losses | Confirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	4,533,585	4,378,917
The financial instruments applying lifetime expected credit losses | Confirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	1,627,281	2,316,893
The financial instruments applying lifetime expected credit losses | Confirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	151,865	112,909
The financial instruments applying lifetime expected credit losses | Confirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	157,721	48,866
The financial instruments applying lifetime expected credit losses | Confirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	10,971	10,101
The financial instruments applying lifetime expected credit losses | Unconfirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	4,385,532	2,439,101
The financial instruments applying lifetime expected credit losses | Unconfirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	3,087,027	1,423,299
The financial instruments applying lifetime expected credit losses | Unconfirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	1,037,428	940,715
The financial instruments applying lifetime expected credit losses | Unconfirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	46,836	34,468
The financial instruments applying lifetime expected credit losses | Unconfirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	207,719	32,303
The financial instruments applying lifetime expected credit losses | Unconfirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	6,522	8,316
Impaired
Disclosure of internal credit grades [line items]
Credit exposure	16,795	17,876
Impaired | Confirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	10,411	10,149
Impaired | Confirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Confirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Confirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Confirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	214	501
Impaired | Confirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	10,197	9,648
Impaired | Unconfirmed acceptances and guarantees
Disclosure of internal credit grades [line items]
Credit exposure	6,384	7,727
Impaired | Unconfirmed acceptances and guarantees | Grade 1
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Unconfirmed acceptances and guarantees | Grade 2
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Unconfirmed acceptances and guarantees | Grade 3
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Unconfirmed acceptances and guarantees | Grade 4
Disclosure of internal credit grades [line items]
Credit exposure	0	0
Impaired | Unconfirmed acceptances and guarantees | Grade 5
Disclosure of internal credit grades [line items]
Credit exposure	₩ 6,384	₩ 7,727

Contingent Liabilities and Co_5

Contingent Liabilities and Commitments - Summary of Acceptances and Guarantees by Counterparty (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 6,481,423	₩ 6,867,686
Unconfirmed guarantees	4,385,532	2,439,101
Total	₩ 10,866,955	₩ 9,306,787
Proportion (%)	100.00%	100.00%
Large companies
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 5,431,921	₩ 5,538,003
Unconfirmed guarantees	3,377,150	1,770,235
Total	₩ 8,809,071	₩ 7,308,238
Proportion (%)	81.06%	78.53%
Small and medium-sized companies
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 820,327	₩ 695,860
Unconfirmed guarantees	657,073	459,487
Total	₩ 1,477,400	₩ 1,155,347
Proportion (%)	13.60%	12.41%
Public sector and others
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 229,175	₩ 633,823
Unconfirmed guarantees	351,309	209,379
Total	₩ 580,484	₩ 843,202
Proportion (%)	5.34%	9.06%

Contingent Liabilities and Co_6

Contingent Liabilities and Commitments - Summary of Acceptances and Guarantees by Industry (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 6,481,423	₩ 6,867,686
Unconfirmed guarantees	4,385,532	2,439,101
Total	₩ 10,866,955	₩ 9,306,787
Proportion (%)	100.00%	100.00%
Financial institutions
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 385,761	₩ 632,947
Unconfirmed guarantees	10,114	5,871
Total	₩ 395,875	₩ 638,818
Proportion (%)	3.64%	6.86%
Manufacturing
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 2,742,224	₩ 2,992,319
Unconfirmed guarantees	2,979,232	1,285,530
Total	₩ 5,721,456	₩ 4,277,849
Proportion (%)	52.65%	45.96%
Service
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 676,440	₩ 920,352
Unconfirmed guarantees	38,920	89,457
Total	₩ 715,360	₩ 1,009,809
Proportion (%)	6.58%	10.85%
Wholesale & Retail
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 1,603,085	₩ 1,086,772
Unconfirmed guarantees	999,416	891,619
Total	₩ 2,602,501	₩ 1,978,391
Proportion (%)	23.95%	21.26%
Construction
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 317,946	₩ 411,601
Unconfirmed guarantees	38,260	14,488
Total	₩ 356,206	₩ 426,089
Proportion (%)	3.28%	4.58%
Public sector
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 28,257	₩ 104,925
Unconfirmed guarantees	99,841	103,285
Total	₩ 128,098	₩ 208,210
Proportion (%)	1.18%	2.24%
Others
Acceptances And Guarantees By Counterparty Line Items [Line Items]
Confirmed guarantees	₩ 727,710	₩ 718,770
Unconfirmed guarantees	219,749	48,851
Total	₩ 947,459	₩ 767,621
Proportion (%)	8.72%	8.25%

Contingent Liabilities and Co_7

Contingent Liabilities and Commitments - Summary of Other Matters (Including Litigation) (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)Year
Kookmin Bank | Request for a return of redemption amount
Disclosure Of Contingent Liabilities
Description of the lawsuits	Kookmin Bank invested the assets entrusted by OO Asset Management and OO Investment Trust Management in the Fairfield Sentry Limited, and Fairfield Sentry Limited reinvested the assets in Bernard L. Madoff Investment Securities LLC managed by Bernard Madoff (Bernard L. Madoff Investment Securities LLC is in the liquidation process due to Ponzi scheme fraud-related losses). Bankruptcy trustee of Bernard L. Madoff Investment Securities LLC filed a lawsuit against Kookmin Bank seeking to return the amount of redemptions received by Kookmin Bank through Fairfield Sentry Limited.
Status of the lawsuits	Application for dismissal by the defendant has been denied, and further proceedings are scheduled. [Related litigation is in progress at the New York Southern District Federal Bankruptcy Court (10-3777) at the written complaint review stage]
Loss Contingency Pending Claims Number	1
Loss Contingency Damages Sought Value	₩ 48,068
Kookmin Bank | Confirm The Absence Of Debt
Disclosure Of Contingent Liabilities
Description of the lawsuits	Galamat-Art LLP is a joint guarantor of the PF loan for the ‘Kazakhstan Almaty City Complex Development Project’ in which Kookmin Bank Co., Ltd. participated as a lender. OO Bank, the agent bank of the lending group, filed a provisional seizure and a lawsuit on the merits of the guarantee debt to the local court against Galamat-Art LLP. And Galamat-Art LLP filed a counterclaim against the lenders, including Kookmin Bank, to confirm the absence of debt denying the joint guarantee obligation.
Status of the lawsuits	Decision in the first trial on December 29, 2021. Won both lawsuits on the merits and counterclaim. Galamat-Art LLP lodged an appeal.
Loss Contingency Pending Claims Number | Year	1
Loss Contingency Damages Sought Value	₩ 96,200
KB Securities Co., Ltd. | Request for a return of transaction amount (Australian fund)
Disclosure Of Contingent Liabilities
Description of the lawsuits	The plaintiffs OOOO Securities and OOOO Life Insurance filed lawsuits, claiming that the KB Securities Co., Ltd. provided false information on major matters in the product description while selling JB Australia NDIS Private Fund No.1 (on April 25, 2019, plaintiffs invested ￦50 billion each) (a) (Primary claim) requesting KB Securities Co., Ltd. to return unjust enrichment of ￦100 billion for cancelation of sales contracts of beneficiary certificates due to an error or termination of the contract due to default, (b) (Secondary claim) requesting for compensation for damages in investments amounting to ￦100 billion due to violation of the investor protection obligation and fraudulent transactions of KB Securities Co., Ltd. and OOO Asset Management.
Status of the lawsuits	First trial is in progress (The 4th pleading is scheduled for March 22, 2022).
Loss Contingency Pending Claims Number | Year	1
Loss Contingency Damages Sought Value	₩ 100,000

Subsidiaries - Summary of Detai

Subsidiaries - Summary of Details Of Subsidiaries (Details)	12 Months Ended
	Dec. 31, 2021
Kookmin Bank
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	Kookmin Bank
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Banking and foreign exchange transaction
KB Securities Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Securities Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Financial investment
KB Insurance Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Insurance Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Non-life insurance
KB Kookmin Card Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Kookmin Card Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Credit card and installment financing
Prudential Life Insurance Company of Korea Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	Prudential Life Insurance Company of Korea Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Life insurance
KB Asset Management Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Asset Management Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Collective investment and advisory
KB Capital Co.,Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Capital Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Financial Leasing
KB Life Insurance Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Life Insurance Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Life insurance
KB Real Estate Trust Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Real Estate Trust Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Real estate trust management
KB Savings Bank Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Savings Bank Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Savings banking
KB Investment Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Investment Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Capital investment
KB Data System Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Data System Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Software advisory, development, and supply
KB Credit Information Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Financial Group Inc.
Investee	KB Credit Information Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Collection of receivables or credit investigation
Kookmin Bank Cambodia PLC.
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	Kookmin Bank Cambodia Plc.
Ownership interests(%)	100.00%
Location	Cambodia
Date of financial statements	Dec. 31, 2021
Industry	Banking and foreign exchange transaction
Kookmin Bank China Ltd.
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	Kookmin Bank (China) Ltd.
Ownership interests(%)	100.00%
Location	China
Date of financial statements	Dec. 31, 2021
Industry	Banking and foreign exchange transaction
KB Microfinance Myanmar Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	KB Microfinance Myanmar Co., Ltd.
Ownership interests(%)	100.00%
Location	Myanmar
Date of financial statements	Dec. 31, 2021
Industry	Microfinance services
PRASAC Microfinance Institution Plc.
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	PRASAC Microfinance Institution Plc.
Ownership interests(%)	100.00%
Location	Cambodia
Date of financial statements	Dec. 31, 2021
Industry	Microfinance services
PT Bank KB Bukopin TbK
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	PT Bank KB Bukopin Tbk
Ownership interests(%)	67.00%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Banking and foreign exchange transaction
PT Bank Syariah Bukopin
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	PT Bank Syariah Bukopin
Ownership interests(%)	92.78%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Banking
PT Bukopin Finance
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	PT Bukopin Finance
Ownership interests(%)	97.03%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Installment financing
KB Bank Myanmar Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank
Investee	KB Bank Myanmar Co., Ltd.
Ownership interests(%)	100.00%
Location	Myanmar
Date of financial statements	Dec. 31, 2021
Industry	Banking and foreign exchange transaction
KBFG Securities America Inc.
Disclosure of subsidiaries [line items]
Investor	KB Securities Co., Ltd.
Investee	KBFG Securities America Inc.
Ownership interests(%)	100.00%
Location	United States
Date of financial statements	Dec. 31, 2021
Industry	Investment advisory and securities trading
KB Securities Hong Kong Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Securities Co., Ltd.
Investee	KB Securities Hong Kong Ltd.
Ownership interests(%)	100.00%
Location	China
Date of financial statements	Dec. 31, 2021
Industry	Investment advisory and securities trading
KB Securities Vietnam Joint Stock Company
Disclosure of subsidiaries [line items]
Investor	KB Securities Co., Ltd.
Investee	KB Securities Vietnam Joint Stock Company
Ownership interests(%)	99.70%
Location	Vietnam
Date of financial statements	Dec. 31, 2021
Industry	Investment advisory and securities trading
KB FINA Joint Stock Company
Disclosure of subsidiaries [line items]
Investor	KB Securities Co., Ltd.
Investee	KB FINA Joint Stock Company
Ownership interests(%)	77.82%
Location	Vietnam
Date of financial statements	Dec. 31, 2021
Industry	Investment advisory and securities trading
Leading Insurance Services, Inc.
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	Leading Insurance Services, Inc.
Ownership interests(%)	100.00%
Location	United States
Date of financial statements	Dec. 31, 2021
Industry	Management service
KBFG Insurance(China) Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	KBFG Insurance(China) Co., Ltd.
Ownership interests(%)	100.00%
Location	China
Date of financial statements	Dec. 31, 2021
Industry	Non-life insurance
PT. KB Insurance Indonesia
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	PT. KB Insurance Indonesia
Ownership interests(%)	70.00%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Non-life insurance
KB Claims Survey & Adjusting
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	KB Claims Survey & Adjusting
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Claim service
KB Sonbo CNS
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	KB Sonbo CNS
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Management service
KB Golden Life Care Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	KB Golden Life Care Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Service
KB Healthcare Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Insurance Co., Ltd.
Investee	KB Healthcare Co., Ltd.
Ownership interests(%)	100.00%
Location	Korea
Date of financial statements	Dec. 31, 2021
Industry	Information and communication
KB DAEHAN SPECIALIZED BANK PLC.
Disclosure of subsidiaries [line items]
Investor	KB Kookmin Card Co., Ltd.
Investee	KB Daehan Specialized Bank Plc.
Ownership interests(%)	95.71%
Location	Cambodia
Date of financial statements	Dec. 31, 2021
Industry	Auto Installment finance
PT. KB Finansia Multi Finance
Disclosure of subsidiaries [line items]
Investor	KB Kookmin Card Co., Ltd.
Investee	PT. KB Finansia Multi Finance
Ownership interests(%)	80.00%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Auto Installment finance
KB J Capital Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Kookmin Card Co., Ltd.
Investee	KB J Capital Co., Ltd.
Ownership interests(%)	49.99%
Location	Thailand
Date of financial statements	Dec. 31, 2021
Industry	Service
PT Sunindo Kookmin Best Finance
Disclosure of subsidiaries [line items]
Investor	KB Capital Co., Ltd.
Investee	PT Sunindo Kookmin Best Finance
Ownership interests(%)	85.00%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Auto Installment finance
KB KOLAO Leasing Co., Ltd.
Disclosure of subsidiaries [line items]
Investor	KB Kookmin Card Co., Ltd., KB Capital Co., Ltd.
Investee	KB KOLAO Leasing Co., Ltd.
Ownership interests(%)	80.00%
Location	Laos
Date of financial statements	Dec. 31, 2021
Industry	Auto Installment finance
PT KB Data Systems Indonesia
Disclosure of subsidiaries [line items]
Investor	Kookmin Bank, KB Data System Co., Ltd.
Investee	PT KB Data Systems Indonesia
Ownership interests(%)	100.00%
Location	Indonesia
Date of financial statements	Dec. 31, 2021
Industry	Service
KBAM Shanghai Advisory Services Co.,Ltd
Disclosure of subsidiaries [line items]
Investor	KB Asset Management Co., Ltd.
Investee	KBAM Shanghai Advisory Services Co., Ltd.
Ownership interests(%)	100.00%
Location	China
Date of financial statements	Dec. 31, 2021
Industry	General advisory

Subsidiaries - Summary of Conde

Subsidiaries - Summary of Condensed Financial Information Of Major Subsidiaries (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020
Kookmin Bank
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1]	₩ 483,564,898		₩ 438,444,114
Liabilities	[1]	450,675,985		408,036,040
Equity	[1]	32,888,913		30,408,074
Operating revenue	[1]	26,536,995		24,519,818
Profit (loss) for the year	[1]	2,590,764		2,298,195
Total comprehensive income (loss) for the year	[1]	₩ 3,265,921		₩ 2,905,953
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements.		Financial information is based on its consolidated financial statements.
KB Securities Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1],[2]	₩ 55,493,985		₩ 57,570,654
Liabilities	[1],[2]	50,008,422		52,516,488
Equity	[1],[2]	5,485,563		5,054,166
Operating revenue	[1],[2]	8,543,590		10,040,497
Profit (loss) for the year	[1],[2]	594,301		425,622
Total comprehensive income (loss) for the year	[1],[2]	₩ 628,112		₩ 449,507
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements. Includes fair value adjustments arising from the acquisition.		Financial information is based on its consolidated financial statements. Includes fair value adjustments arising from the acquisition.
KB Insurance Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1],[2]	₩ 41,472,227		₩ 39,125,869
Liabilities	[1],[2]	37,328,954		35,093,312
Equity	[1],[2]	4,143,273		4,032,557
Operating revenue	[1],[2]	14,131,278		13,735,778
Profit (loss) for the year	[1],[2]	301,836		177,181
Total comprehensive income (loss) for the year	[1],[2]	₩ 107,240		₩ 139,290
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements. Includes fair value adjustments arising from the acquisition.		Financial information is based on its consolidated financial statements. Includes fair value adjustments arising from the acquisition.
KB Kookmin Card Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1]	₩ 27,349,561		₩ 24,071,644
Liabilities	[1]	22,793,920		19,789,958
Equity	[1]	4,555,641		4,281,686
Operating revenue	[1]	3,527,354		3,210,581
Profit (loss) for the year	[1]	418,898		324,662
Total comprehensive income (loss) for the year	[1]	₩ 442,873		₩ 308,148
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements.		Financial information is based on its consolidated financial statements.
Prudential Life Insurance Company of Korea Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[2]	₩ 26,287,116		₩ 25,121,656
Liabilities	[2]	23,992,601		22,681,729
Equity	[2]	2,294,515		2,439,927
Operating revenue	[2]	1,976,122		656,062
Profit (loss) for the year	[2]	336,198		55,711
Total comprehensive income (loss) for the year	[2]	₩ 54,587		₩ (31,718)
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Includes fair value adjustments arising from the acquisition.		Includes fair value adjustments arising from the acquisition.
KB Life Insurance Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets		₩ 10,634,562		₩ 10,424,916
Liabilities		10,174,282		9,842,789
Equity		460,280		582,127
Operating revenue		2,259,301		1,897,859
Profit (loss) for the year		(46,595)		(23,185)
Total comprehensive income (loss) for the year		(121,847)		(33,210)
KB Asset Management Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1]	375,739		335,601
Liabilities	[1]	128,589		112,522
Equity	[1]	247,150		223,079
Operating revenue	[1]	254,162		191,427
Profit (loss) for the year	[1]	79,899		57,317
Total comprehensive income (loss) for the year	[1]	₩ 79,071		₩ 57,802
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements.		Financial information is based on its consolidated financial statements.
KB Capital Co.,Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1],[2]	₩ 14,529,427		₩ 12,823,748
Liabilities	[1],[2]	12,707,210		11,392,177
Equity	[1],[2]	1,822,217		1,431,571
Operating revenue	[1],[2]	1,634,759		1,300,378
Profit (loss) for the year	[1],[2]	209,899		141,646
Total comprehensive income (loss) for the year	[1],[2]	₩ 209,719		₩ 139,949
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements. Includes fair value adjustments arising from the acquisition.		Financial information is based on its consolidated financial statements. Includes fair value adjustments arising from the acquisition.
KB Savings Bank Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets		₩ 2,601,134		₩ 1,883,720
Liabilities		2,339,037		1,658,116
Equity		262,097		225,604
Operating revenue		150,028		104,397
Profit (loss) for the year		18,932		17,305
Total comprehensive income (loss) for the year		22,526		16,197
KB Real Estate Trust Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets		496,522		437,619	[1]
Liabilities		119,700		108,096	[1]
Equity		376,822		329,523	[1]
Operating revenue		168,373		139,070	[1]
Profit (loss) for the year		81,480		66,874	[1]
Total comprehensive income (loss) for the year		82,299		₩ 66,718	[1]
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary				Financial information is based on its consolidated financial statements.
KB Investment Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets	[1]	1,197,720		₩ 848,693
Liabilities	[1]	922,239		618,552
Equity	[1]	275,481		230,141
Operating revenue	[1]	207,367		128,014
Profit (loss) for the year	[1]	55,338		15,387
Total comprehensive income (loss) for the year	[1]	₩ 55,340		₩ 15,390
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements.		Financial information is based on its consolidated financial statements.
KB Credit Information Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets		₩ 28,674		₩ 27,711
Liabilities		12,303		11,773
Equity		16,371		15,938
Operating revenue		39,909		39,767
Profit (loss) for the year		388		1,132
Total comprehensive income (loss) for the year		434		1,040
KB Data System Co., Ltd.
Subsidiaries Condensed Financial Information Abstract [Abstract]
Assets		44,486	[1]	40,347
Liabilities		25,911	[1]	23,024
Equity		18,575	[1]	17,323
Operating revenue		174,819	[1]	149,966
Profit (loss) for the year		467	[1]	(1,729)
Total comprehensive income (loss) for the year		₩ 1,105	[1]	₩ (3,367)
Description Of Basis Of Preparation Of Condensed Financial Information Of Subsidiary		Financial information is based on its consolidated financial statements.
[1]	Financial information is based on its consolidated financial statements.
[2]	Includes fair value adjustments arising from the acquisition.

Subsidiaries - Summary of Natur

Subsidiaries - Summary of Nature Of The Risks Associated With Interests In Consolidated Structured Entities (Details) ₩ in Millions	12 Months Ended
	Dec. 31, 2021KRW (₩)
K plus 1st L.L.C And Other Subsidiaries
Disclosure of information about consolidated structured entities [line items]
Exposure Of The Risks Associated With Interests In Consolidated Structured Entities	₩ 4,512,760
Description of terms of contractual arrangements that could require parent or subsidiaries to provide financial support to structured entity	The Group has provided payment guarantees of ￦4,512,760 million to K plus 1st L.L.C and other consolidated structured entities.
KB Sinansan Line Private Special Asset Fund And Other Subsidiaries
Disclosure of information about consolidated structured entities [line items]
Exposure Of The Risks Associated With Interests In Consolidated Structured Entities	₩ 1,642,214
Description of terms of contractual arrangements that could require parent or subsidiaries to provide financial support to structured entity	The Group has provided capital commitment to 31 consolidated structured entities including KB Sinansan Line Private Special Asset Fund (SOC). The unexecuted amount of the capital commitment is ￦1,642,214 million. Based on the capital commitment, the Group is subject to increase its investment upon the request of the asset management company or the additional agreement among investors.
Trusts
Disclosure of information about consolidated structured entities [line items]
Description of terms of contractual arrangements that could require parent or subsidiaries to provide financial support to structured entity	The Group has provided the guarantees of payment of principal, or principal and fixed rate of return in case the operating results of the trusts are less than the guaranteed principal, or principal and fixed rate of return.

Subsidiaries - Summary of Chang

Subsidiaries - Summary of Changes In Subsidiaries (Details)	12 Months Ended
	Dec. 31, 2021
PT KB Data Systems Indonesia
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Holds more than half of the ownership interests
Able Guwall 1st Co., Ltd.
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Holds the power in the event of default and is exposed to significant variable returns by providing lines of credit, ABCP purchase commitments or acquisition of subordinated debt
KB Global Private Real Estate Debt Fund
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Holds the power to determine the operation of the funds and is exposed to variable returns by holding significant amount of ownership interests
KB Global Commerce Private Equity Investment Fund
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Holds the power as a general partner and is exposed to variable returns by holding significant amount of ownership interests
Able Hana Co., Ltd.
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Termination of the commitments
KB SAUDI SEPCO II Private Special Asset Fund
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Liquidation
Aquila Global Real Assets Fund
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Disposal
KB Global ESG Securities Feeder Fund (Equity)
Disclosure Of Changes In Parents Ownership Interest In Subsidiary Line Items [Line Items]
Description	Decrease in ownership interests to less than majority

Unconsolidated Structured Ent_3

Unconsolidated Structured Entity - Summary of Nature Purpose and Activities of the Unconsolidated Structured Entities and How the Structured Entities are Financed (Details)	12 Months Ended
	Dec. 31, 2021
Structured Financing [Member]
Disclosure of unconsolidated structured entities [line items]
Purpose	Granting PF loans to SOC and real estate Granting loans to ships/aircrafts SPC
Activity	Construction of SOC and real estate Building ships, construction and purchase of aircrafts
Method of Financing	Loan commitments through credit line, providing credit line, and investment agreements
Investment funds
Disclosure of unconsolidated structured entities [line items]
Purpose	Investment in beneficiary certificates Investment in PEF and partnerships
Activity	Management of fund assets Payment of fund fees and allocation of fund profits
Method of Financing	Sales of beneficiary certificate instruments Investment from general partners and limited partners
Trusts
Disclosure of unconsolidated structured entities [line items]
Purpose	Management of financial trusts; —Development trust —General unspecified money trust —Trust whose principal is not guaranteed —Other trusts
Activity	Management of trusted financial assets Payment of trust fees and allocation of trust profits.
Method of Financing	Sales of trusted financial assets
Asset-backed securitization
Disclosure of unconsolidated structured entities [line items]
Purpose	Early cash generation through transfer of securitized assets Fees earned through services to SPC, such as providing lines of credit and ABCP purchase commitments
Activity	Fulfillment of asset-backed securitization plan Purchase and collection of securitized assets Issuance and repayment of ABS and ABCP
Method of Financing	Issuance of ABS and ABCP based on securitized assets

Unconsolidated Structured Ent_4

Unconsolidated Structured Entity - Summary Size of the Unconsolidated Structured Entities and the Risks Associated With Its Interests in Unconsolidated Structured Entities (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Investment funds
Disclosure of unconsolidated structured entities [line items]
Total assets of unconsolidated Structured Entity		₩ 416,401,893	₩ 285,528,467
Assets recognised in entity's financial statements in relation to structured entities		14,115,170	11,931,895
Liabilities recognised in entity's financial statements in relation to structured entities		58,637	26,936
Maximum exposure	[1]	20,246,909	17,599,392
Assets held	[1]	14,115,170	11,931,895
Purchase and investment commitments	[1]	6,131,739	5,650,847
Unused credit	[1]	0	0
Acceptances and guarantees and loan commitments	[1]	₩ 0	₩ 16,650
Methods of determining the maximum exposure		Investments / loans and Investment agreements	Investments / loans and Investment agreements
Description of comparison between assets and liabilities recognised in relation to structured entities and maximum exposure to loss from interests in structured entities		Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.	Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.
Investment funds | Financial assets at fair value through profit or loss
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		₩ 13,340,292	₩ 11,151,958
Investment funds | Loans measured at amortized cost
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		479,452	379,727
Investment funds | Investments In Associates
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		292,315	396,953
Investment funds | Deposits [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		58,348	26,839
Investment funds | Other Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		289	97
Investment funds | Other assets
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		3,111	3,257
Structured financing
Disclosure of unconsolidated structured entities [line items]
Total assets of unconsolidated Structured Entity		89,647,771	56,200,300
Assets recognised in entity's financial statements in relation to structured entities		8,419,096	4,822,905
Liabilities recognised in entity's financial statements in relation to structured entities		659,030	620,445
Maximum exposure	[1]	10,818,812	7,028,661
Assets held	[1]	8,419,096	4,822,905
Purchase and investment commitments	[1]	0	0
Unused credit	[1]	855,322	1,322,414
Acceptances and guarantees and loan commitments	[1]	₩ 1,544,394	₩ 883,342
Methods of determining the maximum exposure		Loan commitments / investment agreements / purchase commitments and acceptances and guarantees	Loan commitments / investment agreements / purchase commitments and acceptances and guarantees
Description of comparison between assets and liabilities recognised in relation to structured entities and maximum exposure to loss from interests in structured entities		Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.	Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.
Structured financing | Financial assets at fair value through profit or loss
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		₩ 126,086	₩ 164,996
Structured financing | Loans measured at amortized cost
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		8,290,514	4,655,337
Structured financing | Deposits [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		650,834	612,023
Structured financing | Other Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		8,196	8,422
Structured financing | Other assets
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		2,496	2,572
Trusts
Disclosure of unconsolidated structured entities [line items]
Total assets of unconsolidated Structured Entity		3,005,720	1,984,006
Assets recognised in entity's financial statements in relation to structured entities		475,151	353,679
Liabilities recognised in entity's financial statements in relation to structured entities		0	1
Maximum exposure	[1]	622,143	371,966
Assets held	[1]	475,151	353,679
Purchase and investment commitments	[1]	131,102	0
Unused credit	[1]	0	₩ 18,287
Acceptances and guarantees and loan commitments	[1]	₩ 15,890
Methods of determining the maximum exposure		Trust paying dividends by results: Total amount of trust exposure	Trust paying dividends by results: Total amount of trust exposure
Description of comparison between assets and liabilities recognised in relation to structured entities and maximum exposure to loss from interests in structured entities		Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.	Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.
Trusts | Financial assets at fair value through profit or loss
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		₩ 90,348
Trusts | Loans measured at amortized cost
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		265,173	₩ 262,382
Trusts | Other Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities			1
Trusts | Other assets
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		119,630	91,297
Asset-backed securitization and others
Disclosure of unconsolidated structured entities [line items]
Total assets of unconsolidated Structured Entity		144,897,727	116,115,027
Assets recognised in entity's financial statements in relation to structured entities		12,897,256	11,258,163
Liabilities recognised in entity's financial statements in relation to structured entities		363,208	359,264
Maximum exposure	[1]	18,884,019	15,723,704
Assets held	[1]	12,897,256	11,258,163
Purchase and investment commitments	[1]	499,682	761,200
Unused credit	[1]	4,990,797	3,020,084
Acceptances and guarantees and loan commitments	[1]	₩ 496,284	₩ 684,257
Methods of determining the maximum exposure		Providing credit lines/ purchase commitments/ loan commitments and acceptances and guarantees	Providing credit lines/ purchase commitments/ loan commitments and acceptances and guarantees
Description of comparison between assets and liabilities recognised in relation to structured entities and maximum exposure to loss from interests in structured entities		Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.	Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.
Asset-backed securitization and others | Financial assets at fair value through profit or loss
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		₩ 3,602,631	₩ 2,308,917
Asset-backed securitization and others | Derivative Financial Assets [Member]
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		181	3,005
Asset-backed securitization and others | Loans measured at amortized cost
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		1,194,705	1,080,824
Asset-backed securitization and others | Financial investments
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		8,084,101	7,849,054
Asset-backed securitization and others | Deposits [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		330,592	344,221
Asset-backed securitization and others | Derivative Financial Instruments Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		437	1,307
Asset-backed securitization and others | Other Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		32,179	13,736
Asset-backed securitization and others | Other assets
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		15,638	16,363
Nature
Disclosure of unconsolidated structured entities [line items]
Total assets of unconsolidated Structured Entity		653,953,111	459,827,800
Assets recognised in entity's financial statements in relation to structured entities		35,906,673	28,366,642
Liabilities recognised in entity's financial statements in relation to structured entities		1,080,875	1,006,646
Maximum exposure	[1]	50,571,883	40,723,723
Assets held	[1]	35,906,673	28,366,642
Purchase and investment commitments	[1]	6,762,523	6,412,047
Unused credit	[1]	5,846,119	4,360,785
Acceptances and guarantees and loan commitments	[1]	₩ 2,056,568	₩ 1,584,249
Description of comparison between assets and liabilities recognised in relation to structured entities and maximum exposure to loss from interests in structured entities		Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.	Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.
Nature | Financial assets at fair value through profit or loss
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		₩ 17,159,357	₩ 13,625,871
Nature | Derivative Financial Assets [Member]
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		181	3,005
Nature | Loans measured at amortized cost
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		10,229,844	6,378,270
Nature | Financial investments
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		8,084,101	7,849,054
Nature | Investments In Associates
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		292,315	396,953
Nature | Deposits [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		1,039,774	983,083
Nature | Derivative Financial Instruments Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		437	1,307
Nature | Other Liabilities [Member]
Disclosure of unconsolidated structured entities [line items]
Liabilities recognised in entity's financial statements in relation to structured entities		40,664	22,256
Nature | Other assets
Disclosure of unconsolidated structured entities [line items]
Assets recognised in entity's financial statements in relation to structured entities		₩ 140,875	₩ 113,489
[1]	Maximum exposure includes the asset amounts, after deducting loss (provisions for credit losses, impairment losses, and others), recognized in the consolidated financial statements of the Group.

Related Party Transactions - De

Related Party Transactions - Details Of Significant Profit Or Loss Arising From Transactions With Related Parties (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balhae Infrastructure Company
Related party transactions [abstract]
Fee and commission income		₩ 5,689	₩ 6,817	₩ 6,743
Outstanding balances for related party transactions [abstract]
Other assets		1,427	1,733
Retirement pension
Related party transactions [abstract]
Interest expense		9	3	4
Fee and commission income		1,338	1,077	939
Outstanding balances for related party transactions [abstract]
Other assets		369	295
Other liabilities		5,014	10,600
Korea Credit Bureau Co., Ltd.
Related party transactions [abstract]
Interest expense		6	7	21
Fee and commission income		910	957	1,056
Fee and commission expense		4,256	3,280	2,541
Insurance income		4	5	3
Other operating expense		11	1	0
Outstanding balances for related party transactions [abstract]
Loans measured at amortized cost (gross amount)		36	36
Deposits		10,200	19,982
Insurance liabilities		1	1
Other liabilities		0	623
Key management
Outstanding balances for related party transactions [abstract]
Loans measured at amortized cost (gross amount)		4,591	5,153
Allowances for credit losses		2	2
Other assets		4	5
Deposits		16,996	17,167
Provisions		1	0
Insurance liabilities		2,471	2,501
Other liabilities		345	371
KB GwS Private Securities Investment Trust
Related party transactions [abstract]
Fee and commission income	[1]	146	853	851
Outstanding balances for related party transactions [abstract]
Other assets	[2]	₩ 0	641
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Incheon Bridge Co., Ltd.
Related party transactions [abstract]
Interest income		₩ 4,069	4,345	8,612
Interest expense		158	334	483
Fee and commission income		22	23	0
Fee and commission expense		6	6	7
Insurance income		230	279	284
Gains on financial instruments at fair value through profit or loss		0	899	4,975
Losses on financial instruments at fair value through profit or loss		1,374	0	0
Reversal of credit losses		444	0	5
Provision for credit losses		1	472	1
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		37,382	38,756
Loans measured at amortized cost (gross amount)		114,107	133,002
Allowances for credit losses		26	202
Other assets		423	545
Deposits		35,487	39,520
Provisions		24	292
Insurance liabilities		79	109
Other liabilities		99	205
KoFC POSCO HANWHA KB Shared Growth Private Equity Fund No. 2
Related party transactions [abstract]
Fee and commission income		0	12	178
Aju Good Technology Venture Fund
Related party transactions [abstract]
Interest expense		27	18	22
Outstanding balances for related party transactions [abstract]
Deposits		6,286	3,093
Other liabilities		10	1
KB Star Office Private Real Estate Investment Trust No.1
Related party transactions [abstract]
Interest income		370	371	370
Interest expense		5	61	208
Fee and commission income		435	436	435
Outstanding balances for related party transactions [abstract]
Loans measured at amortized cost (gross amount)		10,000	10,000
Allowances for credit losses		5	5
Other assets		138	137
Deposits		2,578	4,255
Other liabilities		0	24
RAND Bio Science Co., Ltd.
Related party transactions [abstract]
Interest expense		0	11	5
Other non-operating expense		0	0	843
Outstanding balances for related party transactions [abstract]
Loans measured at amortized cost (gross amount)		1	1
Deposits		443	693
SY Auto Capital Co., Ltd.
Related party transactions [abstract]
Interest income		941	1,097	1,016
Interest expense		0	2	1
Fee and commission income		88	39	34
Fee and commission expense		15	132	389
Insurance income		42	40	32
Other operating income		710	1,709	689
Other operating expense		64	121	288
Reversal of credit losses		11	17	13
Outstanding balances for related party transactions [abstract]
Loans measured at amortized cost (gross amount)		40,074	40,060
Allowances for credit losses		68	57
Other assets		630	65
Deposits		17	6
Insurance liabilities		14	13
Other liabilities		₩ 36	76
Description of transactions with related party		the Group purchased installment financial assets, etc. from SY Auto Capital Co., Ltd. amounting to ￦1,504,217 million and ￦878,690 million for the years ended December 31, 2020 and 2021, respectively.
Food Factory Co., Ltd.
Related party transactions [abstract]
Interest income		₩ 70	52	41
Interest expense		5	12	0
Fee and commission expense		2	4	12
Insurance income		9	5	4
Gains on financial instruments at fair value through profit or loss		0	72	60
Losses on financial instruments at fair value through profit or loss		1	0	0
Reversal of credit losses		6	0	0
Provision for credit losses		0	8	1
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		663	662
Loans measured at amortized cost (gross amount)		3,553	3,210
Allowances for credit losses		4	8
Other assets		2	3
Deposits		839	1,555
Provisions		0	2
Insurance liabilities		8	5
Other liabilities		6	9
KB Pre IPO Secondary Venture Fund No.1
Related party transactions [abstract]
Interest expense		1	3	7
Fee and commission income		110	110	110
Outstanding balances for related party transactions [abstract]
Deposits		103	629
Built On Co., Ltd.
Related party transactions [abstract]
Interest income	[1]	0	0	1
Insurance income	[1]	₩ 0	0	1
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
KB Private Equity Fund No.3
Related party transactions [abstract]
Fee and commission income	[1]	₩ 0	463	480
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Wise Asset Management Co., Ltd.
Related party transactions [abstract]
Interest expense	[1]	₩ 0	0	2
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Acts Co., Ltd.
Related party transactions [abstract]
Interest income		₩ 0	1	1
Insurance income		1	0	1
Gains on financial instruments at fair value through profit or loss		0	0	30
Outstanding balances for related party transactions [abstract]
Deposits		154	18
Insurance liabilities		2	1
Other liabilities		100	100
Dongjo Co., Ltd.
Related party transactions [abstract]
Insurance income		1	1	2
Outstanding balances for related party transactions [abstract]
Insurance liabilities		0	1
A-PRO Co., Ltd.
Related party transactions [abstract]
Interest income	[1]	0	7	19
Interest expense	[1]	0	1	4
Fee and commission expense	[1]	0	0	17
Insurance income	[1]	0	1	4
Provision for credit losses	[1]	₩ 0	1	0
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
POSCO-KB Shipbuilding Fund
Related party transactions [abstract]
Fee and commission income		₩ 213	387	490
Outstanding balances for related party transactions [abstract]
Other assets		213	264
Dae-A Leisure Co., Ltd.
Related party transactions [abstract]
Interest expense		2	7	8
Outstanding balances for related party transactions [abstract]
Deposits		17	636
Other liabilities		0	21
Paycoms Co., Ltd.
Related party transactions [abstract]
Interest income		10	10	10
Insurance income		0	0	1
Gains on financial instruments at fair value through profit or loss		42	69	125
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,269	1,226
Other assets		1	1
Deposits		1	1
Big Dipper Co., Ltd.
Related party transactions [abstract]
Fee and commission expense		655	768	0
Outstanding balances for related party transactions [abstract]
Loans measured at amortized cost (gross amount)		17	4
Deposits		0	1
KB-TS Technology Venture Private Equity Fund
Related party transactions [abstract]
Fee and commission income		285	126	730
KB-SJ Tourism Venture Fund
Related party transactions [abstract]
Fee and commission income		279	338	422
JLK Inspection Co., Ltd.
Related party transactions [abstract]
Interest expense	[1]	₩ 0	0	1
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
TESTIAN Inc.
Related party transactions [abstract]
Interest income	[1]	₩ 0	0	3
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Iwon Alloy Co., Ltd.
Related party transactions [abstract]
Insurance income		₩ 0	1	2
Outstanding balances for related party transactions [abstract]
Insurance liabilities		1	0
RMGP Bio-Pharma Investment Fund, L.P.
Related party transactions [abstract]
Fee and commission income		38	27	0
Gains on financial instruments at fair value through profit or loss		531	0	947
Losses on financial instruments at fair value through profit or loss		2,373	489	2,120
Other non-operating income		0	0	33
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		5,423	4,250
Other liabilities		79	71
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund
Related party transactions [abstract]
Interest expense		17	40	89
Fee and commission income		514	734	735
Outstanding balances for related party transactions [abstract]
Deposits		1,524	8,097
Other liabilities		0	1
Spark Biopharma Inc.
Related party transactions [abstract]
Interest expense		7	0	59
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		4,950	0
Loans measured at amortized cost (gross amount)		17	0
Deposits		6,015	0
Other liabilities		3	0
KB No.9 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense	[1]	₩ 0	0	(23)
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
KB No.10 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense	[1]	₩ 0	0	18
Gains on financial instruments at fair value through profit or loss	[1]	₩ 0	0	3,066
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
KB No.11 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense	[1]	₩ 0	0	9
Gains on financial instruments at fair value through profit or loss	[1]	₩ 0	0	118
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Keystone-Hyundai Securities No. 1 Private Equity Fund
Related party transactions [abstract]
Fee and commission income	[1]	₩ 43	115	90
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Jungdo Co., Ltd. [Member]
Outstanding balances for related party transactions [abstract]
Deposits		₩ 4	4
RMGP Bio-Pharma Investment, L.P.
Related party transactions [abstract]
Losses on financial instruments at fair value through profit or loss		0	1	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		14	9
SKYDIGITAL INC.
Related party transactions [abstract]
Fee and commission income		3	4
Outstanding balances for related party transactions [abstract]
Deposits		85	15
MJT&I Corp.
Related party transactions [abstract]
Insurance income		0	0	1
KB No.17 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense		14	25	28
Fee and commission income		0	0	175
Gains on financial instruments at fair value through profit or loss		0	4	1,384
Losses on financial instruments at fair value through profit or loss		1,388	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,301	2,687
Deposits		1,687	1,711
Other liabilities		12	23
KB-KDBC Pre-IPO New Technology Business Investment Fund
Related party transactions [abstract]
Interest expense		1	23	58
Fee and commission income		190	300	449
Outstanding balances for related party transactions [abstract]
Deposits		904	923
Jo Yang Industrial Co., Ltd.
Outstanding balances for related party transactions [abstract]
Deposits		1	2
KB No.18 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense		20	31	28
Fee and commission income		0	0	263
Gains on financial instruments at fair value through profit or loss		8	84	1,898
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,881	3,873
Deposits		2,077	2,101
Other liabilities		12	19
KB No.19 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense		9	13	8
Fee and commission income		0	0	150
Gains on financial instruments at fair value through profit or loss		36	11	1,044
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,091	2,055
Deposits		1,013	1,053
Other liabilities		5	3
KB No.20 Special Purpose Acquisition Company
Related party transactions [abstract]
Interest expense		15	25	3
Fee and commission income		0	210	0
Gains on financial instruments at fair value through profit or loss		68	1,568	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,135	3,067
Deposits		1,681	1,716
Other liabilities		3	1
KB SPROTT Renewable Private Equity Fund No.1
Related party transactions [abstract]
Fee and commission income		487	488	490
KB-Stonebridge Secondary Private Equity Fund [Member]
Related party transactions [abstract]
Fee and commission income		550	1,442	1,444
CWhy Inc.
Related party transactions [abstract]
Insurance income		0	0	3
Losses on financial instruments at fair value through profit or loss		0	2,000	0
Stratio, Inc.
Related party transactions [abstract]
Interest expense		0	0	1
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,000	1,000
Deposits		0	13
NEXELON Inc.
Related party transactions [abstract]
Interest expense	[1]	₩ 0	0	2
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
CellinCells Co., Ltd.
Related party transactions [abstract]
Interest expense		₩ 0	4	19
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,000	2,000
Loans measured at amortized cost (gross amount)		6	24
Deposits		38	260
Bomapp Inc.
Related party transactions [abstract]
Interest expense		0	0	1
Fee and commission expense		5	9	0
Insurance income		0	8	1
Losses on financial instruments at fair value through profit or loss		1,980	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		19	1,999
Insurance liabilities		0	2
KB Social Impact Investment Fund
Related party transactions [abstract]
Fee and commission income		300	300	121
Outstanding balances for related party transactions [abstract]
Other assets		150	0
KB-Solidus Global Healthcare Fund
Related party transactions [abstract]
Fee and commission income		167	777	81
Outstanding balances for related party transactions [abstract]
Other assets		620	707
BNF Corporation Ltd.
Related party transactions [abstract]
Interest income	[1]	0	401	7
Fee and commission income	[1]	0	2	0
Gains on financial instruments at fair value through profit or loss	[1]	0	0	158
Provision for credit losses	[1]	₩ 0	8	1
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
KB Cape No.1 Private Equity Fund
Related party transactions [abstract]
Fee and commission income		₩ 144	144	97
Losses on financial instruments at fair value through profit or loss		69	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,591	2,000
Other assets		73	144
ALS Co., Ltd.
Related party transactions [abstract]
Interest income	[1]	₩ 0	0	194
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Honest Fund, Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		₩ 3,999	3,999
MitoImmune Therapeutics
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		7,000	5,000
Bioprotect Ltd.
Related party transactions [abstract]
Gains on financial instruments at fair value through profit or loss		293	0	0
Losses on financial instruments at fair value through profit or loss		0	216	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,557	3,264
KB-MDI Centauri Fund LP
Related party transactions [abstract]
Fee and commission income		401	308	0
Gains on financial instruments at fair value through profit or loss		551	0	0
Losses on financial instruments at fair value through profit or loss		284	322	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		9,633	4,280
Other assets		104	308
S&E BIO
Related party transactions [abstract]
Interest expense		1	1	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,000	2,000
Deposits		263	1,142
Contents First
Related party transactions [abstract]
Interest expense		83	14	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		7,277	6,146
Deposits		12,650	1,823
Other liabilities		57	7
GENINUS Inc.
Related party transactions [abstract]
Interest expense		29	70	0
Gains on financial instruments at fair value through profit or loss		4,009	0	0
Provision for credit losses		6	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		5,855	5,599
Loans measured at amortized cost (gross amount)		17	0
Allowances for credit losses		6	0
Deposits		34,415	13,630
Other liabilities		2	15
COSES GT
Related party transactions [abstract]
Interest income		18	6	0
Interest expense		1	0	0
Losses on financial instruments at fair value through profit or loss		0	0	5
Reversal of credit losses		3	0	0
Provision for credit losses		0	4	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		4,930	4,930
Loans measured at amortized cost (gross amount)		515	500
Allowances for credit losses		2	4
Other assets		1	1
Deposits		1,939	292
Insurance liabilities		0	1
WJ Private Equity Fund No.1
Related party transactions [abstract]
Fee and commission income		7	5	0
Outstanding balances for related party transactions [abstract]
Other assets		2	2
Deposits		260	349
UPRISE, Inc.
Related party transactions [abstract]
Interest income		5	2	0
Interest expense		1	0	0
Reversal of credit losses		1	0	0
Provision for credit losses		0	1	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,250	250
Loans measured at amortized cost (gross amount)		0	500
Allowances for credit losses		0	1
Deposits		4,001	11
KB-UTC Inno-Tech Venture Fund
Related party transactions [abstract]
Fee and commission income		471	371	0
KBSP Private Equity Fund No.4
Related party transactions [abstract]
Fee and commission income		389	480	0
KB-NAU Special Situation Corporate Restructuring Private Equity Fund
Related party transactions [abstract]
Fee and commission income		1,198	237	0
JR GLOBAL REIT
Related party transactions [abstract]
Fee and commission income	[1]	₩ 0	6,210	0
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
IGIS No.371 Professional Investors' Real Estate Investment Company
Related party transactions [abstract]
Fee and commission income	[1]	₩ 0	200	0
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
Koreit Tower Real Estate Investment Trust Company
Related party transactions [abstract]
Fee and commission income	[1]	₩ 0	2,852	0
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
2020 KB Fintech Renaissance Fund
Related party transactions [abstract]
Fee and commission income		₩ 147	60	0
KB Material and Parts No.1 PEF
Related party transactions [abstract]
Fee and commission income		353	63	0
FineKB Private Equity Fund No.1
Related party transactions [abstract]
Fee and commission income		540	38	0
Outstanding balances for related party transactions [abstract]
Other assets		153	38
Bluepointpartners Inc.
Related party transactions [abstract]
Gains on financial instruments at fair value through profit or loss		846	0	0
Losses on financial instruments at fair value through profit or loss		0	68	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,278	1,432
Channel Corporation
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		14,551	4,551
GOMI CORPORATION
Related party transactions [abstract]
Interest income		19	0	0
Interest expense		1	0	0
Provision for credit losses		13	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,500	500
Loans measured at amortized cost (gross amount)		2,233	9
Allowances for credit losses		12	0
Other assets		4	0
Deposits		3,188	37
Other liabilities		1	0
Copin Communications, Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		4,801	1,500
Go2joy Co., Ltd.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,200	1,200
ClavisTherapeutics, Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,000	2,000
4N Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		200	200
Deposits		39	76
Xenohelix Co., Ltd.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,100	2,100
OKXE Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		800	800
NEOMIO CORP.
Outstanding balances for related party transactions [abstract]
Deposits	[2]	₩ 0	535
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021, therefore, the remaining outstanding balances with those entities are not disclosed.
December & Company Inc.
Related party transactions [abstract]
Interest expense		₩ 0	1	0
Insurance income		109	0	0
Outstanding balances for related party transactions [abstract]
Deposits		1	1
Insurance liabilities		10	0
Bank salad Co Ltd [Member]
Related party transactions [abstract]
Fee and commission income		36	36	39
Fee and commission expense		48	5
Gains on financial instruments at fair value through profit or loss		613	1,636	0
Losses on financial instruments at fair value through profit or loss		663	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		9,090	9,141
Wyatt Corp [Member]
Related party transactions [abstract]
Insurance income		87	63	50
Gains on financial instruments at fair value through profit or loss		0	0	136
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		6,000	6,000
Deposits		1	1
Insurance liabilities		94	39
Hibiscus Fund LP [Member]
Related party transactions [abstract]
Fee and commission income		372	0	0
Gains on financial instruments at fair value through profit or loss		113	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		4,731	0
Other assets		251	0
RMGKB BioAccess Fund L.P. [Member]
Related party transactions [abstract]
Fee and commission income		57	0	0
Gains on financial instruments at fair value through profit or loss		5	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		353	0
IDTECK Co., Ltd. [Member]
Related party transactions [abstract]
Insurance income		1	0	0
Outstanding balances for related party transactions [abstract]
Insurance liabilities		1	0
Mantisco Co., Ltd. [Member]
Related party transactions [abstract]
Interest expense		1	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,000	0
Loans measured at amortized cost (gross amount)		1	0
Deposits		386	0
SuperNGine Co., Ltd. [Member]
Related party transactions [abstract]
Interest expense		1	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,996	0
Loans measured at amortized cost (gross amount)		2	0
Deposits		944	0
Desilo Inc. [Member]
Related party transactions [abstract]
Interest income		1	0	0
Provision for credit losses		2	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,168	0
Loans measured at amortized cost (gross amount)		301	0
Allowances for credit losses		2	0
Deposits		168	0
Turing Co., Ltd. [Member]
Related party transactions [abstract]
Interest expense		1	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,000	0
Deposits		1,054	0
IGGYMOB Co., Ltd. [Member]
Related party transactions [abstract]
Interest expense		1	0	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		5,000	0
Loans measured at amortized cost (gross amount)		6	0
Deposits		2,938	0
G1 Playground Co., Ltd.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		1,000	0
Deposits		354	0
RMG-KB BP Management Ltd.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		7	0
SwatchOn Inc.
Related party transactions [abstract]
Interest expense		10	47	0
Fee and commission income		8	9	0
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,345	3,345
Loans measured at amortized cost (gross amount)		73	59
Deposits		686	3,947
Provisions		0	1
Other liabilities		0	40
Checkmate Therapeutics Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		2,200	0
Pin Therapeutics Inc.
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		3,000	0
K The 15th REIT Co., Ltd.
Related party transactions [abstract]
Fee and commission income	[1]	500	0	0
Insurance income	[1]	₩ 1	0	0
Outstanding balances for related party transactions [abstract]
Description of transactions with related party		Excluded from the Group’s related party as of December 31, 2021.
KB Bio Private Equity No.3 Ltd.
Related party transactions [abstract]
Fee and commission income		₩ 324	0	0
IMBiologics Corp
Outstanding balances for related party transactions [abstract]
Financial assets at fair value through profit or loss		5,000	0
Loans measured at amortized cost (gross amount)		4	0
Paramark KB Fund No 1
Related party transactions [abstract]
Fee and commission income		100	0	₩ 0
Outstanding balances for related party transactions [abstract]
Other liabilities		₩ 200	₩ 0
[1]	Excluded from the Group’s related party as of December 31, 2021.
[2]	Excluded from the Group’s related party as of December 31, 2021, therefore, the remaining outstanding balances with those entities are not disclosed.

Related Party Transactions - Su

Related Party Transactions - Summary of Significant Loan Transactions With Related Parties (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		₩ 3,404	₩ 0
Collection			0
Ending			3,404
Korea Credit Bureau Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		36	43
Loan		36	36
Collection		(36)	(43)
Ending		36	36
Incheon Bridge Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		171,758	185,564
Loan		7	901
Collection		(20,276)	(14,707)
Ending		151,489	171,758
KB Star Office Private Real Estate Investment Trust No.1
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		10,000	10,000
Loan		0	0
Collection		0	0
Ending		10,000	10,000
RAND Bio Science Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1	1
Loan		1	1
Collection		(1)	(1)
Ending		1	1
SY Auto Capital Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		40,060	41,990
Loan		74	11,310
Collection		(60)	(13,240)
Ending		40,074	40,060
Food Factory Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,872	2,582
Loan		397	1,314
Collection		(53)	(24)
Ending		4,216	3,872
Acts Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		0	0
Loan			74
Collection			(74)
Ending			0
Paycoms Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,226	1,157
Loan		43	69
Collection		0	0
Ending		1,269	1,226
Big Dipper Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		4	11
Loan		17	4
Collection		(4)	(11)
Ending		17	4
RMGP Bio-Pharma Investment Fund, L.P.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		4,250	3,419
Loan		1,173	831
Collection		0	0
Ending		5,423	4,250
RMGP Bio-Pharma Investment, L.P.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		9	8
Loan		5	1
Collection		0	0
Ending		14	9
Spark Biopharma Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		4,967
Ending		4,967
Stratio, Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,000	1,000
Loan		0	0
Collection		0	0
Ending		1,000	1,000
KB Cape No.1 Private Equity Fund
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,000	2,000
Loan		0	0
Collection		(409)	0
Ending		₩ 1,591	2,000
A-PRO Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning	[1]		2,019
Loan	[1]		2,000
Collection	[1]		(4,019)
Description Of Other Information Of Loans And Receivables Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.
Honest Fund, Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		₩ 3,999	3,999
Loan		0	0
Collection		0	0
Ending		3,999	3,999
CellinCells Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,024	2,004
Loan		6	24
Collection		(24)	(4)
Ending		2,006	2,024
KB No.17 Special Purpose Acquisition Company
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,687	2,683
Loan		0	4
Collection		(1,386)	0
Ending		1,301	2,687
KB No.18 Special Purpose Acquisition Company
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,873	3,786
Loan		8	87
Collection		0	0
Ending		3,881	3,873
KB No.19 Special Purpose Acquisition Company
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,055	2,043
Loan		36	12
Collection		0	0
Ending		2,091	2,055
KB No.20 Special Purpose Acquisition Company
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,067	1,499
Loan		68	1,568
Collection		0	0
Ending		3,135	3,067
COSES GT
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		5,430	2,930
Loan		15	2,500
Collection		0	0
Ending		5,445	5,430
CWhy Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		0	2,000
Loan			0
Collection			(2,000)
Ending			0
Bomapp Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,999	1,999
Loan		0	0
Collection		(1,980)	0
Ending		19	1,999
MitoImmune Therapeutics
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		5,000	5,000
Loan		2,000	0
Collection		0	0
Ending		7,000	5,000
BNF Corporation Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning	[1]	₩ 0	3,659
Loan	[1]		1,000
Collection	[1]		(4,659)
Ending	[1]		0
Description Of Other Information Of Loans And Receivables Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.
CARLIFE Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		₩ 0	0
Loan			22
Collection			(22)
Ending			0
UPRISE, Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		750	250
Loan		1,000	500
Collection		(500)	0
Ending		1,250	750
Channel Corporation
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		4,551	2,000
Loan		10,000	2,551
Collection		0	0
Ending		14,551	4,551
Bioprotect Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,264	0
Loan		293	3,264
Collection		0	0
Ending		3,557	3,264
GOMI CORPORATION
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		509
Loan		4,233	509
Collection		(9)
Ending		4,733	509
Copin Communications, Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,500	0
Loan		3,301	1,500
Collection		0	0
Ending		4,801	1,500
Go2joy Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,200	0
Loan		0	1,200
Collection		0	0
Ending		1,200	1,200
ClavisTherapeutics, Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,000	0
Loan		0	2,000
Collection		0	0
Ending		2,000	2,000
S&E BIO
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,000
Loan		0	2,000
Collection		0
Ending		2,000	2,000
Bluepointpartners Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,432	0
Loan		846	1,432
Collection		0	0
Ending		2,278	1,432
4N Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		200
Loan		0	200
Collection		0
Ending		200	200
Xenohelix Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,100	0
Loan		0	2,100
Collection		0	0
Ending		2,100	2,100
Contents First
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		6,146	0
Loan		1,131	6,146
Collection		0	0
Ending		7,277	6,146
KB-MDI Centauri Fund LP
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		4,280	0
Loan		5,353	4,280
Collection		0	0
Ending		9,633	4,280
OKXE Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		800	0
Loan		0	800
Collection		0	0
Ending		800	800
GENINUS Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		5,599	0
Loan		273	5,599
Collection		0	0
Ending		5,872	5,599
Key management
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		5,153	3,538
Loan		3,421	5,141
Collection		(3,983)	(3,526)
Ending		4,591	5,153
Wyatt Corp [Member]
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		6,000	6,000
Loan		0	0
Collection		0	0
Ending		6,000	6,000
Bank salad Co Ltd [Member]
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		9,141	7,504
Loan		0	1,637
Collection		(51)	0
Ending		9,090	9,141
SwatchOn Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,404	1,845
Loan		73	1,559
Collection		(59)
Ending		3,418	₩ 3,404
Checkmate Therapeutics Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		2,200
Ending		2,200
Mantisco Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		3,001
Ending		3,001
IMBiologics Corp
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		5,004
Ending		5,004
G1 Playground Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		1,000
Ending		1,000
Pin Therapeutics Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		3,000
Ending		3,000
Hibiscus Fund LP
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		4,731
Ending		4,731
SuperNGine Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		1,998
Ending		1,998
Desilo Inc.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		3,469
Ending		3,469
RMG-KB BioAccess Fund L.P.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		353
Ending		353
RMG-KB BP Management Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		7
Ending		7
IGGYMOB Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		5,006
Ending		5,006
Turing Co., Ltd.
Loans And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Loan		3,000
Ending		₩ 3,000
[1]	Excluded from the Group’s related party as of December 31, 2021.

Related Party Transactions - _2

Related Party Transactions - Summary of Significant Borrowing Transactions With Related Parties (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020
Korea Credit Bureau Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		₩ 19,982		₩ 17,966
Borrowing				1,000
Repayment		(1,000)
Others		(8,782)	[1]	1,016
Ending		10,200		19,982
Incheon Bridge Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		39,520		45,447
Borrowing		15,000		20,000
Repayment		(20,000)		(21,260)
Others		967	[1]	(4,667)
Ending		35,487		39,520
Jo Yang Industrial Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2		2
Others	[1]	(1)
Ending		1		2
BNF Corporation Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning	[2]			947
Others	[2]			(947)
KB No.17 Special Purpose Acquisition Company
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,711		1,742
Borrowing		1,546		1,525
Repayment		(1,525)		(1,500)
Others		(45)	[1]	(56)
Ending		1,687		1,711
KB No.18 Special Purpose Acquisition Company
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		2,101		2,140
Borrowing		2,016		2,063
Repayment		(2,063)		(2,100)
Others		23	[1]	(2)
Ending		2,077		2,101
KB No.19 Special Purpose Acquisition Company
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,053		1,093
Borrowing		1,000		1,000
Repayment		(1,000)		(1,000)
Others		(40)	[1]	(40)
Ending		1,013		1,053
KB No.20 Special Purpose Acquisition Company
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,716		1,984
Borrowing		1,534		1,522
Repayment		(1,522)		(1,500)
Others		(47)	[1]	(290)
Ending		1,681		1,716
CellinCells Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		260		1,545
Others		(222)	[1]	(1,285)
Ending		38		260
Stratio, Inc.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		13		726
Others		(13)	[1]	(713)
Ending				13
Jungdo Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		4		4
Ending		4		4
Dae-A Leisure Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		636		753
Repayment		(479)
Others		(140)	[1]	(117)
Ending		17		636
Aju Good Technology Venture Fund
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,093		5,456
Borrowing		3,840		1,442
Repayment		(1,442)
Others		795	[1]	(3,805)
Ending		6,286		3,093
KB Pre IPO Secondary Venture Fund No.1
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		629		2,955
Others	[1]	(526)		(2,326)
Ending		103		629
KB Star Office Private Real Estate Investment Trust No.1
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		4,255		8,293
Borrowing				2,117
Repayment		(1,770)		(5,630)
Others		93	[1]	(525)
Ending		2,578		4,255
SY Auto Capital Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		6		8
Others		11	[1]	(2)
Ending		17		6
RAND Bio Science Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		693		4,452
Borrowing				2,250
Repayment		(400)		(3,750)
Others		150	[1]	(2,259)
Ending		443		693
Wise Asset Management Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning				21
Others				(21)
Food Factory Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,555		1,073
Borrowing		507		1,503
Repayment		(500)		(1,003)
Others		(723)	[1]	(18)
Ending		839		1,555
Acts Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		18		1
Others		136	[1]	17
Ending		154		18
Big Dipper Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1		6
Others		(1)	[1]	(5)
Ending				1
COMPUTERLIFE Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning				1
Others				(1)
SKYDIGITAL INC.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		15		25
Others		70	[1]	(10)
Ending		85		15
KB-KDBC Pre-IPO New Technology Business Investment Fund
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		923		7,054
Borrowing		0		1,500
Repayment		0		(6,500)
Others		(19)	[1]	(1,131)
Ending		904		923
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		8,097		13,118
Others		(6,573)	[1]	(5,021)
Ending		1,524		8,097
Paycoms Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1		1
Ending		1		1
A-PRO Co., Ltd.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning	[2]			3,201
Others	[2]			(3,201)
Spark Biopharma Inc.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Borrowing		1,000
Repayment		(3,000)
Others	[1]	8,015
Ending		6,015
KB IGen Private Equity Fund No.1
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning	[2]			147
Others	[2]			(147)
NEOMIO CORP.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning	[2]	535
Others	[2]	(535)		535
Ending	[2]			535
WJ Private Equity Fund No.1
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		349
Others		(89)	[1]	349
Ending		260		349
UPRISE, Inc.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		11
Others		3,990	[1]	11
Ending		4,001		11
COSES GT
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		292
Others		1,647	[1]	292
Ending		1,939		292
Swatch On Inc. [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		3,947		395
Borrowing		200		7,002
Repayment		(3,501)		(3,801)
Others		40	[1]	351
Ending		686		3,947
GOMI CORPORATION
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		37
Others	[1]	3,151		37
Ending		3,188		37
S&E BIO
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,142
Others	[1]	(879)		1,142
Ending		263		1,142
4N Inc.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		76
Others	[1]	(37)		76
Ending		39		76
Contents First
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1,823
Borrowing		20,000		4,000
Repayment		(11,000)		(3,000)
Others	[1]	1,827		823
Ending		12,650		1,823
December & Company Inc.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1
Others	[1]			1
Ending		1		1
GENINUS Inc.
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		13,630
Repayment		(5,000)
Others	[1]	25,785		13,630
Ending		34,415		13,630
Key management
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		17,167		15,338
Borrowing		16,574		21,319
Repayment		(16,994)		(20,410)
Others	[1]	249		920
Ending		16,996		17,167
Wyatt Corp [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Beginning		1
Others				1
Ending		1		₩ 1
G1 Playground Co Ltd [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Others	[1]	354
Ending		354
SuperNGine Co Ltd [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Others	[1]	944
Ending		944
Desilo Inc [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Others	[1]	168
Ending		168
Turing Co Ltd [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Others	[1]	1,054
Ending		1,054
Mantisco Co Ltd [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Others	[1]	386
Ending		386
IGGYMOB Co Ltd [Member]
Borrowings And Receivables Gross Amount Related Party Transactions Abstract [Abstract]
Others	[1]	2,938
Ending		₩ 2,938
[1]	Transactions between related parties, such as settlements arising from operating activities and deposits, are expressed in net amount.
[2]	Excluded from the Group’s related party as of December 31, 2021.

Related Party Transactions - _3

Related Party Transactions - Summary of Significant Investment And Collection Transactions With Related Parties (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Korea Credit Bureau Co., Ltd.
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		₩ 0	₩ 0
Withdrawal and others		90	90
Balhae Infrastructure Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		279	894
Withdrawal and others		9,584	6,973
KB SPROTT Renewable Private Equity Fund No.1
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	4,129
Withdrawal and others		0	0
KB Social Impact Investment Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		1,500	1,500
Withdrawal and others		0	0
KB-Stonebridge Secondary Private Equity Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		13,258	9,093
Withdrawal and others		₩ 11,578	₩ 0
KB No.9 Special Purpose Acquisition Company
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
KB-Solidus Global Healthcare Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		₩ 0	₩ 10,920
Withdrawal and others		3,120	4,940
KB-UTC Inno-Tech Venture Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		5,085	16,965
Withdrawal and others		1,125	0
KB-KDBC Pre-IPO New Technology Business Investment Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	0
Withdrawal and others		4,800	6,400
POSCO-KB Shipbuilding Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	5,000
Withdrawal and others		₩ 7,600	₩ 2,125
KoFC KBIC Frontier Champ 2010-5(PEF)
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
KB GwS Private Securities Investment Trust
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	₩ 0	₩ 0
Withdrawal and others	[1]	₩ 188,836	₩ 9,523
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
Aju Good Technology Venture Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		₩ 0	₩ 0
Withdrawal and others		4,769	2,885
KB-TS Technology Venture Private Equity Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		3,080	2,240
Withdrawal and others		5,376	5,488
Keystone-Hyundai Securities No. 1 Private Equity Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	0	0
Withdrawal and others	[1]	₩ 1,925	₩ 0
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		₩ 10,000	₩ 8,000
Withdrawal and others		10,800	3,200
KB Star Office Private Real Estate Investment Trust No.1
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	0
Withdrawal and others		1,246	1,273
KB-SJ Tourism Venture Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		500	1,500
Withdrawal and others		0	0
KB Pre IPO Secondary Venture Fund No.1
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	0
Withdrawal and others		292	585
WJ Private Equity Fund No.1
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	10,000
Withdrawal and others		0	0
KB-NAU Special Situation Corporate Restructuring Private Equity Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		7,692	5,700
Withdrawal and others		0	0
IGIS No.371 Professional Investors' Real Estate Investment Company
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	0	10,000
Withdrawal and others	[1]	₩ 0	₩ 10,000
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
Koreit Tower Real Estate Investment Trust Company
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	₩ 0	₩ 30,000
Withdrawal and others	[1]	₩ 0	₩ 30,000
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
Project Vanilla Co., Ltd.
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		₩ 0	₩ 2,450
Withdrawal and others		0	0
December & Company Inc.
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	30,000
Withdrawal and others		0	0
2020 KB Fintech Renaissance Fund
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	550
Withdrawal and others		0	0
KB Material and Parts No.1 PEF
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	3,400
Withdrawal and others		0	0
KoFC POSCO HANWHA KB Shared Growth Private Equity Fund No. 2
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	0
Withdrawal and others		11,860	3,230
All Together Korea Fund No.2
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		0	100,000
Withdrawal and others		0	90,127
JR GLOBAL REIT
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	0	219,493
Withdrawal and others	[1]	₩ 65,025	₩ 3,639
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
KB Private Equity Fund No.3
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	₩ 0	₩ 0
Withdrawal and others	[1]	0	8,000
KBKTB Technology Venture Fund [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		5,600	0
Withdrawal and others		0	0
KBSOLIDUS Healthcare Investment Fund [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		1,800	0
Withdrawal and others		0	0
Paramark KB Fund No.1 [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		2,040	0
Withdrawal and others		0	0
FineKB Private Equity Fund No.1 [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		8,375	0
Withdrawal and others		0	0
KB Bio Private Equity No.3 Ltd. [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		10,000	0
Withdrawal and others		0	0
K The 15th REIT Co Ltd. [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments	[1]	8,600	0
Withdrawal and others	[1]	₩ 8,600	₩ 0
Description Of Other Information Of Investments And Collections Gross Amount Related Party Transactions		Excluded from the Group’s related party as of December 31, 2021.	Excluded from the Group’s related party as of December 31, 2021.
G Payment Joint Stock Company [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		₩ 9,029	₩ 0
Withdrawal and others		0	0
Four Ninety Eight Seventh Owners L L C [Member]
Investments And Collections Gross Amount Related Party Transactions Abstract [Abstract]
Equity investments		166,851	0
Withdrawal and others		₩ 0	₩ 0
[1]	Excluded from the Group’s related party as of December 31, 2021.

Related Party Transactions - _4

Related Party Transactions - Summary of unused Commitments To Related Parties (Details) ₩ in Millions, RM in Millions, $ in Millions	Dec. 31, 2021KRW (₩)	Dec. 31, 2021USD ($)	Dec. 31, 2021MYR (RM)	Dec. 31, 2020KRW (₩)	Dec. 31, 2020USD ($)
Balhae Infrastructure Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	₩ 6,154			₩ 6,433
Korea Credit Bureau Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	565			564
Key management
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Loan commitments in Korean won	2,018			1,760
Incheon Bridge Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Loan commitments in Korean won	20,000			20,000
Unused lines Of Credit for credit Card	93			98
KoFC POSCO HANWHA KB Shared Growth Private Equity Fund No. 2
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Commitments On Loss Absorption Priority	10,000			14,980
SY Auto Capital Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	98			90
Food Factory Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Loan commitments in Korean won				388
Unused lines Of Credit for credit Card	82			73
KB No.17 Special Purpose Acquisition Company
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card				441
KB No.18 Special Purpose Acquisition Company
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	15			15
KB No.19 Special Purpose Acquisition Company
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	1			0
CellinCells Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	18			0
RAND Bio Science Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	24			24
Big Dipper Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	43			96
SwatchOn Inc
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	127			7
Gomi corporation Inc
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	2			0
COSES GT Co., Ltd
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	15			0
GENINUS Inc.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	43			0
Spark Biopharma Inc
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	33			0
IGGYMOB Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	14			0
KB Pre IPO Secondary Venture Fund No.1
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Commitments On Loss Absorption Priority	1,671			1,671
KB-TS Technology Venture Private Equity Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	616			3,696
KB-SJ Tourism Venture Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	0			500
KB-Brain KOSDAQ Scale-up New Technology Business Investment Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	0			10,000
KB SPROTT Renewable Private Equity Fund No.1
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	18,704			18,704
KB-Stonebridge Secondary Private Equity Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	5,579			18,837
KB Social Impact Investment Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	0			1,500
KB-UTC Inno-Tech Venture Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	0			5,085
KB-Solidus Global Healthcare Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Commitments On Loss Absorption Priority	4,500			0
Purchase Of Securities	2,120			2,120
KB-NAU Special Situation Corporate Restructuring Private Equity Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	16,608			24,300
All Together Korea Fund No.2
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	0			990,000
KB-KTB Technology Venture Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	22,400			0
KB-SOLIDUS Healthcare Investment Fund
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	88,200			0
KB Co-Investment Private Equity Fund No.1
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	20,000			0
FineKB Private Equity Fund No.1
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	16,625			25,000
Paramark KB Fund No 1
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities	27,960
RMGP Bio-Pharma Investment Fund, L.P.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities | $		$ 5,169,932			$ 7,796,423
RMGP Bio-Pharma Investment, L.P.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities | $		12,615			17,132
KB-MDI Centauri Fund LP
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities | $		6,622,923			$ 13,537,500
Hibiscus Fund LP
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities | RM			RM 33,333,333
RMG KB BP Management Ltd
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities | $		616,170
RMG KB BioAccess Fund LP
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Purchase Of Securities | $		$ 29,702,324
Mantisco Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	29			0
IMBiologics Corp
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	18			0
SuperNGine Co., Ltd.
Disclosure Of Unused Commitments To Related Parties Line Items [Line Items]
Unused lines Of Credit for credit Card	₩ 18			₩ 0

Related Party Transactions - _5

Related Party Transactions - Summary of Compensation To Key Management (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]
Short-term employee benefits	₩ 22,033	₩ 20,026	₩ 18,727
Post-employment benefits	1,432	1,068	785
Share-based payments	26,079	13,303	14,944
Total	49,544	34,397	34,456
Registered directors (executive)
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]
Short-term employee benefits	8,152	8,111	8,540
Post-employment benefits	966	672	425
Share-based payments	11,655	6,369	7,434
Total	20,773	15,152	16,399
Registered directors (non-executive)
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]
Short-term employee benefits	1,061	1,133	1,030
Post-employment benefits	0	0	0
Share-based payments	0	0	0
Total	1,061	1,133	1,030
Non-registered directors
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]
Short-term employee benefits	12,820	10,782	9,157
Post-employment benefits	466	396	360
Share-based payments	14,424	6,934	7,510
Total	₩ 27,710	₩ 18,112	₩ 17,027

Related Party Transactions - _6

Related Party Transactions - Summary of Collateral Received From Related Parties (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
KB Star Office Private Real Estate Investment Trust No.1 | Real estate
Details Of Collateral Received From Related Parties Line Items [Line Items]
Provision of guarantees or collateral to entity, related party transactions	₩ 13,000	₩ 13,000
Incheon Bridge Co., Ltd.
Details Of Collateral Received From Related Parties Line Items [Line Items]
senior collateral	611,000
subordinated collateral	384,800
certificate of credit guarantee	400,000
Key management | Time deposits and others
Details Of Collateral Received From Related Parties Line Items [Line Items]
Provision of guarantees or collateral to entity, related party transactions	745	213
Key management | Real estate
Details Of Collateral Received From Related Parties Line Items [Line Items]
Provision of guarantees or collateral to entity, related party transactions	₩ 5,176	₩ 4,356

Events after the reporting pe_2

Events after the reporting period - Additional Information (Details)	Feb. 14, 2022shares
Treasury Shares Transaction [Member]
Statement [Line Items]
Number of shares retired during the period	3,455,426

Approval of Issuance of the C_2

Approval of Issuance of the Consolidated Financial Statements - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021
Approval of Issuance of the Consolidated Financial Statements [Abstract]
Date Of Authorisation For Issue Of Financial Statements	Apr. 27, 2022

Parent Company Information - Su

Parent Company Information - Summary of Condensed Statements Of Financial Position (Details) - Parent Company - KRW (₩) ₩ in Millions		Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and due from financial institutions		₩ 608,076	₩ 23,084
Financial Assets at fair value through profit of loss		440,760	474,262
Loans at amortized cost		249,128	179,542
Banking subsidiaries	[1]	14,821,721	14,821,721
Nonbanking subsidiaries	[1]	11,919,717	11,698,159
Other assets		831,977	911,723
Total assets		28,871,379	28,108,491
Liabilities and shareholders' equity
Borrowings			100,000
Debentures		5,552,791	6,128,043
Other liabilities		805,614	894,828
Shareholders' equity		22,512,974	20,985,620
Total liabilities and shareholders equity		₩ 28,871,379	₩ 28,108,491
[1]	Investments in subsidiaries were accounted at cost method in accordance with IAS No.27.

Parent Company Information - _2

Parent Company Information - Summary of Condensed Statements Of Comprehensive Income (Details) - Parent Company - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income
Dividends from subsidiaries	₩ 1,617,949	₩ 1,573,411	₩ 926,934
Interest from subsidiaries	7,566	3,519	3,618
Other income	31,284	22,749	22,709
Total income	1,656,799	1,599,679	953,261
Expense
Interest expense	120,469	132,437	126,065
Non-interest expense	99,745	87,876	80,355
Total expense	220,214	220,313	206,420
Profit before income tax expense	1,436,585	1,379,366	746,841
Income tax benefit (expense)	2,281	49	(854)
Profit for the year	1,438,866	1,379,415	745,987
Other comprehensive loss for the year, net of tax	(298)	(368)	(520)
Total comprehensive income for the year	₩ 1,438,568	₩ 1,379,047	₩ 745,467

Parent Company Information - _3

Parent Company Information - Summary of Condensed Statements Of Cash Flows (Details) - Parent Company - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net income	₩ 1,438,866	₩ 1,379,415	₩ 745,987
Reconciliation of net income to net cash provided by operating activities:
Other operating activities, net	(92,785)	9,930	(274)
Net cash inflow from operating activities	1,346,081	1,389,345	745,713
Investing activities
Net payments to subsidiaries	(219,268)	(2,347,543)	(100,000)
Other investing activities, net	(39,477)	(146,477)	(200,609)
Net cash outflow from investing activities	(258,745)	(2,494,020)	(300,609)
Financing activities
Net increase (decrease) in borrowings	(100,000)	100,000	(298,321)
Increases in debentures	389,405	1,537,091	1,037,656
Repayments of debentures and lease liabilities	(970,535)	(940,610)	(868,723)
Issuance of hybrid securities	1,142,203	1,296,693	399,085
Cash dividends paid	(1,053,417)	(883,952)	(766,249)
Acquisition of treasury shares			(274,317)
Net cash inflow (outflow) from financing activities	(592,344)	1,109,222	(770,869)
Net increase (decrease) in cash and cash equivalents	494,992	4,547	(325,765)
Cash and cash equivalents as of January 1	23,081	18,534	344,299
Cash and cash equivalents as of December 31	₩ 518,073	₩ 23,081	₩ 18,534