POSCO (PKX) 20-F 28 Apr 23 2022 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2022 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Registrant Name	POSCO HOLDINGS INC.
Entity Central Index Key	0000889132
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity File Number	1-13368
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	75,849,177
Entity Interactive Data Current	Yes
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Entity Address, Country	KR
Entity Voluntary Filers	No
ICFR Auditor Attestation Flag	true
Document Registration Statement	false
Document Accounting Standard	International Financial Reporting Standards
Entity Address, Address Line One	POSCO Center
Entity Address, Address Line Two	440 Teheran-ro, Gangnam-gu
Entity Address, City or Town	Seoul
Entity Address, Postal Zip Code	06194
Entity Incorporation, State or Country Code	M5
Auditor Name	KPMG Samjong Accounting Corp
Auditor Firm ID	1357
Auditor Location	Seoul, Republic of Korea
Business Contact [Member]
Document Information [Line Items]
Entity Address, Country	KR
Entity Address, Address Line One	POSCO Center
Entity Address, Address Line Two	440 Teheran-ro, Gangnam-gu
Entity Address, City or Town	Seoul
Entity Address, Postal Zip Code	06194
Contact Personnel Name	Jang, Soo-Young
Local Phone Number	3457-0747
City Area Code	82-2
ADS [Member]
Document Information [Line Items]
Trading Symbol	PKX
Title of 12(b) Security	American Depositary Shares, each representing one-fourth of one share of common stock
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Trading Symbol	PKX
Title of 12(b) Security	Common Stock, par value Won 5,000 per share
Security Exchange Name	NYSE

Consolidated Statements of Fina

Consolidated Statements of Financial Position - KRW (₩)	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	₩ 8,053,108,000,000	₩ 4,775,166,000,000
Trade accounts and notes receivable, net	9,702,142,000,000	9,978,939,000,000
Other receivables, net	2,112,697,000,000	2,104,610,000,000
Other short-term financial assets	10,909,920,000,000	13,447,717,000,000
Inventories	16,133,403,000,000	16,096,371,000,000
Current income tax assets	243,829,000,000	23,229,000,000
Assets held for sale	12,003,000,000	78,470,000,000
Other current assets	1,075,939,000,000	915,358,000,000
Total current assets	48,243,041,000,000	47,419,860,000,000
Long-term trade accounts and notes receivable, net	24,033,000,000	63,205,000,000
Other receivables, net	1,520,331,000,000	1,415,143,000,000
Other long-term financial assets	2,332,538,000,000	2,119,674,000,000
Investments in associates and joint ventures	4,996,551,000,000	4,514,647,000,000
Investment property, net	1,074,031,000,000	1,086,077,000,000
Property, plant and equipment, net	31,781,196,000,000	29,596,698,000,000
Intangible assets, net	4,838,451,000,000	4,166,309,000,000
Defined benefit assets, net	520,659,000,000	255,858,000,000
Deferred tax assets	3,523,546,000,000	1,462,812,000,000
Other non-current assets	167,373,000,000	198,607,000,000
Total non-current assets	50,778,709,000,000	44,879,030,000,000
Total assets	99,021,750,000,000	92,298,890,000,000
Liabilities
Trade accounts and notes payable	5,520,807,000,000	5,468,175,000,000
Short-term borrowings and current installments of long-term borrowings	11,915,994,000,000	8,830,067,000,000
Other payables	2,865,868,000,000	2,189,361,000,000
Other short-term financial liabilities	106,527,000,000	111,641,000,000
Current income tax liabilities	502,685,000,000	2,139,718,000,000
Liabilities directly associated with the assets held for sale	5,000,000	189,000,000
Provisions	515,988,000,000	399,984,000,000
Other current liabilities	2,006,831,000,000	2,132,236,000,000
Total current liabilities	23,434,705,000,000	21,271,371,000,000
Long-term trade accounts and notes payable	15,000,000	694,000,000
Long-term borrowings, excluding current installments	12,389,668,000,000	12,911,149,000,000
Other payables	790,402,000,000	679,009,000,000
Other long-term financial liabilities	87,052,000,000	23,996,000,000
Defined benefit liabilities, net	37,707,000,000	50,842,000,000
Deferred tax liabilities	2,924,552,000,000	1,271,775,000,000
Long-term provisions	579,918,000,000	589,092,000,000
Other non-current liabilities	585,834,000,000	786,996,000,000
Total non-current liabilities	17,395,148,000,000	16,313,553,000,000
Total liabilities	40,829,853,000,000	37,584,924,000,000
Equity
Share capital	482,403,125,000	482,403,125,000
Capital surplus	1,410,288,000,000	1,397,416,000,000
Hybrid bonds	0	199,384,000,000
Reserves	(443,990,000,000)	(666,985,000,000)
Treasury shares	(1,892,308,000,000)	(2,508,294,000,000)
Retained earnings	52,921,137,000,000	51,475,396,000,000
Equity attributable to owners of the controlling company	52,477,530,000,000	50,379,320,000,000
Non-controlling interests	5,714,367,000,000	4,334,646,000,000
Total equity	58,191,897,000,000	54,713,966,000,000
Total liabilities and equity	₩ 99,021,750,000,000	₩ 92,298,890,000,000

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩) ₩ / shares	Dec. 31, 2021 KRW (₩) ₩ / shares	Dec. 31, 2020 KRW (₩) ₩ / shares
Statement of comprehensive income [abstract]
Revenue	₩ 85,003,616	₩ 76,009,201	₩ 57,466,678
Cost of sales	(77,321,199)	(64,154,339)	(52,798,594)
Gross profit	7,682,417	11,854,862	4,668,084
Selling and administrative expenses
Impairment loss on trade accounts and notes receivable	(24,791)	(40,153)	(829)
Other administrative expenses	(2,479,966)	(2,209,809)	(1,939,602)
Selling expenses	(294,482)	(393,075)	(376,940)
Other operating income and expenses
Reversal of (impairment loss) on other receivables	(9,824)	12,975	(53,105)
Other operating income	592,017	577,997	402,336
Other operating expenses	(1,123,685)	(1,027,492)	(645,574)
Operating profit	4,341,686	8,775,305	2,054,370
Share of profit of equity-accounted investees, net	676,260	649,569	133,297
Finance income and costs
Finance income	4,834,011	2,730,110	2,677,499
Finance costs	(5,804,466)	(2,765,175)	(2,892,402)
Profit before income taxes	4,047,491	9,389,809	1,972,764
Income tax expense	(461,534)	(2,213,827)	(224,272)
Profit	3,585,957	7,175,982	1,748,492
Items that will not be reclassified subsequently to profit or loss :
Remeasurements of defined benefit plans	105,769	51,155	36,575
Net changes in fair value of equity investments at fair value through other comprehensive income	(10,076)	214,888	(77,627)
Items that are or may be reclassified subsequently to profit or loss :
Capital adjustment arising from investments in equity-accounted investees	133,134	165,106	(28,609)
Foreign currency translation differences	4,024	386,141	(147,956)
Losses on valuation of derivatives	1,023	309	(331)
Other comprehensive income (loss), net of tax	233,874	817,599	(217,948)
Total comprehensive income	3,819,831	7,993,581	1,530,544
Profit attributable to :
Owners of the controlling company	3,157,536	6,606,728	1,581,208
Non-controllinginterests	428,421	569,254	167,284
Profit	3,585,957	7,175,982	1,748,492
Total comprehensive income attributable to :
Owners of the controlling company	3,394,098	7,374,060	1,394,192
Non-controllinginterests	425,733	619,521	136,352
Total comprehensive income	₩ 3,819,831	₩ 7,993,581	₩ 1,530,544
Earnings per share (in Won)
Basic earnings per share (in Won) | ₩ / shares	₩ 41,634	₩ 87,191	₩ 19,900
Diluted earnings per share (in Won) | (per share)	₩ 39,296	₩ 85,240	₩ 19,900

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - KRW (₩) ₩ in Millions	Total	Year-end dividends [member]	Interim dividends [member]	Share capital [member]	Capital surplus [member]	Hybrid bonds [member]	Reserves [member]	Treasury shares [member]	Retained earnings [member]	Retained earnings [member] Year-end dividends [member]	Retained earnings [member] Interim dividends [member]	Attributable to owners of the controlling company [member]	Attributable to owners of the controlling company [member] Year-end dividends [member]	Attributable to owners of the controlling company [member] Interim dividends [member]	Non-controlling interests [member]	Non-controlling interests [member] Year-end dividends [member]
Beginning balance at Dec. 31, 2019	₩ 47,763,298			₩ 482,403	₩ 1,385,707	₩ 199,384	₩ (1,157,980)	₩ (1,508,303)	₩ 45,054,077			₩ 44,455,288			₩ 3,308,010
Comprehensive income (loss):
Profit	1,748,492								1,581,208			1,581,208			167,284
Other comprehensive income (loss)
Remeasurements of defined benefit plans, net of tax	36,575								44,703			44,703			(8,128)
Capital adjustment arising from investments in equity-accounted investees, net of tax	(28,609)						(16,760)					(16,760)			(11,849)
Net changes in fair value of equity investments at fair value through other comprehensive income, net of tax	(77,627)						(74,210)		(3,417)			(77,627)
Foreign currency translation differences, net of tax	(147,956)						(137,071)					(137,071)			(10,885)
Gain or losses on valuation of derivatives, net of tax	(331)						(261)					(261)			(70)
Total comprehensive income	1,530,544						(228,302)		1,622,494			1,394,192			136,352
Transactions with owners of the controlling company, recognized directly in equity:
Dividends		₩ (380,979)	₩ (277,723)							₩ (320,462)	₩ (277,723)		₩ (320,462)	₩ (277,723)		₩ (60,517)
Changes in subsidiaries	22,303														22,303
Changes in ownership interests in subsidiaries	134,958				(27,716)							(27,716)			162,674
Repayment of redeemable convertible preferred shares	(278,581)				(33,581)							(33,581)			(245,000)
Interest of hybrid bonds	(16,579)								(9,225)			(9,225)			(7,354)
Acquisition of treasury shares	(883,220)							(883,220)				(883,220)
Others	(10,498)				(4,407)		5,364		(4,684)			(3,727)			(6,771)
Total transactions with owners of the controlling company	(1,690,319)				(65,704)		5,364	(883,220)	(612,094)			(1,555,654)			(134,665)
Ending balance at Dec. 31, 2020	47,603,523			482,403	1,320,003	199,384	(1,380,918)	(2,391,523)	46,064,477			44,293,826			3,309,697
Comprehensive income (loss):
Profit	7,175,982								6,606,728			6,606,728			569,254
Other comprehensive income (loss)
Remeasurements of defined benefit plans, net of tax	51,155								44,405			44,405			6,750
Capital adjustment arising from investments in equity-accounted investees, net of tax	165,106						160,343					160,343			4,763
Net changes in fair value of equity investments at fair value through other comprehensive income, net of tax	214,888						205,924		8,948			214,872			16
Foreign currency translation differences, net of tax	386,141						347,469					347,469			38,672
Gain or losses on valuation of derivatives, net of tax	309						243					243			66
Total comprehensive income	7,993,581						713,979		6,660,081			7,374,060			619,521
Transactions with owners of the controlling company, recognized directly in equity:
Dividends		(404,795)	(907,507)							(342,565)	(907,507)		(342,565)	(907,507)		(62,230)
Changes in subsidiaries	15,034														15,034
Changes in ownership interests in subsidiaries	543,464				83,547							83,547			459,917
Interest of hybrid bonds	(16,454)								(9,200)			(9,200)			(7,254)
Acquisition of treasury shares	(116,771)							(116,771)				(116,771)
Others	3,891				(6,134)		(46)		10,110			3,930			(39)
Total transactions with owners of the controlling company	(883,138)				77,413		(46)	(116,771)	(1,249,162)			(1,288,566)			405,428
Ending balance at Dec. 31, 2021	54,713,966			482,403	1,397,416	199,384	(666,985)	(2,508,294)	51,475,396			50,379,320			4,334,646
Comprehensive income (loss):
Profit	3,585,957								3,157,536			3,157,536			428,421
Other comprehensive income (loss)
Remeasurements of defined benefit plans, net of tax	105,769								67,167			67,167			38,602
Capital adjustment arising from investments in equity-accounted investees, net of tax	133,134						126,278					126,278			6,856
Net changes in fair value of equity investments at fair value through other comprehensive income, net of tax	(10,076)						49,516		(59,576)			(10,060)			(16)
Foreign currency translation differences, net of tax	4,024						52,725					52,725			(48,701)
Gain or losses on valuation of derivatives, net of tax	1,023						452					452			571
Total comprehensive income	3,819,831						228,971		3,165,127			3,394,098			425,733
Transactions with owners of the controlling company, recognized directly in equity:
Dividends		₩ (460,238)	₩ (758,492)							₩ (378,128)	₩ (758,492)		₩ (378,128)	₩ (758,492)		₩ (82,110)
Changes in subsidiaries	422,424														422,424
Changes in ownership interests in subsidiaries	418,044				(7,827)							(7,827)			425,871
Interest of hybrid bonds	(16,494)								(1,487)			(1,487)			(15,007)
Variation due to split						(199,384)						(199,384)			199,384
Disposal of treasury shares	58,003				9,491			48,512				58,003
Retirement of treasury stock	(16,011)							567,474	(583,485)			(16,011)
Share-based payment	12,115				12,115							12,115
Others	(1,251)				(907)		(5,976)		2,206			(4,677)			3,426
Total transactions with owners of the controlling company	(341,900)				12,872	₩ (199,384)	(5,976)	615,986	(1,719,386)			(1,295,888)			953,988
Ending balance at Dec. 31, 2022	₩ 58,191,897			₩ 482,403	₩ 1,410,288		₩ (443,990)	₩ (1,892,308)	₩ 52,921,137			₩ 52,477,530			₩ 5,714,367

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Profit	₩ 3,585,957	₩ 7,175,982	₩ 1,748,492
Adjustments for:
Depreciation	3,204,744	3,135,345	3,156,181
Amortization	488,835	444,100	465,558
Finance income	(1,943,661)	(1,270,044)	(1,185,934)
Finance costs	2,532,735	1,257,112	1,390,983
Income tax expense	461,534	2,213,827	224,272
Gain on disposal of property, plant and equipment	(18,502)	(12,016)	(15,548)
Loss on disposal of property, plant and equipment	111,082	95,720	142,126
Impairment losses on property, plant and equipment	213,183	311,520	27,040
Gain on disposal of intangible assets	(291)	(273)	(815)
Gain on disposal of investments in subsidiaries, associates and joint ventures	(13,904)	(85,981)	(88,836)
Loss on disposal of investments in subsidiaries, associates and joint ventures	12,400	12,882	14,632
Share of profit of equity-accounted investees	(676,260)	(649,569)	(133,297)
Expenses related to post-employment benefits	228,611	243,567	248,324
Increase to provisions	289,915	159,592	184,984
Impairment loss on trade and other receivables	34,615	27,178	53,934
Loss on valuation of inventories	259,678	78,783	54,014
Impairment loss on goodwill and intangible assets	370,663	224,328	197,776
Gain on disposals of assets held for sale	(55,262)	(60,208)	(841)
Impairment losses on assets held for sale	0	0	5,030
Compensation for insured losses	(236,344)	(15,558)	(25,253)
Others, net	32,638	(21,456)	5,833
Adjustments to reconcile profit (loss) other than changes in working capital	5,296,409	6,088,849	4,720,163
Changes in operating assets and liabilities	(368,489)	(7,044,310)	2,855,908
Interest received	249,751	279,554	368,539
Interest paid	(560,766)	(433,794)	(624,399)
Dividends received	757,502	782,053	267,923
Income taxes paid	(2,773,599)	(588,969)	(650,889)
Net cash provided by operating activities	6,186,765	6,259,365	8,685,737
Cash flows from investing activities
Acquisitions of short-term financial instruments	(89,327,182)	(41,797,503)	(43,307,727)
Proceeds from disposal of short-term financial instruments	91,539,884	40,336,417	40,500,759
Acquisitions of long-term financial instruments	(21,638)	(289,612)	0
Increase in loans	(1,087,409)	(526,643)	(329,236)
Collection of loans	1,086,964	568,536	138,270
Acquisitions of securities	(493,054)	(300,807)	(338,063)
Proceeds from disposal of securities	332,724	273,935	448,125
Acquisitions of investment in associates and joint ventures	(518,158)	(492,435)	(141,785)
Proceeds from disposal of investment in associates and joint ventures	169,365	61,013	18,401
Acquisitions of property, plant and equipment	(4,927,586)	(3,068,591)	(3,154,412)
Proceeds from (payment for) disposal of property, plant and equipment	864	(11,117)	(42,530)
Acquisitions of investment property	(1,561)	(91,880)	(976)
Proceeds from disposal of investment property	23,401	3,809	250
Acquisitions of intangible assets	(492,873)	(431,122)	(300,645)
Proceeds from disposal of intangible assets	7,748	9,485	79,011
Proceeds from disposal of assets held for sale	111,488	67,293	37,680
Increase in cash from acquisition of business, net of cash acquired	0	5,472	0
Cash received from disposal of business, net of cash transferred	0	0	77,488
Collection of lease receivables	54,614	97,701	61,567
Cash outflows due to business combinations	(901,223)	0	0
Cash received as compensation for insured losses	236,344	0	0
Others, net	(12,583)	2,542	(5,442)
Net cash used in investing activities	(4,219,871)	(5,583,507)	(6,259,265)
Cash flows from financing activities
Proceeds from borrowings	4,553,746	4,358,955	4,410,387
Repayment of borrowings	(4,138,054)	(3,719,542)	(3,644,057)
Proceeds from (repayment of) short-term borrowings, net	1,764,569	(329,897)	35,525
Payment of cash dividends	(1,218,405)	(1,310,920)	(659,145)
Payment of interest of hybrid bonds	(16,494)	(16,493)	(16,539)
Capital contribution from non-controlling interests and proceeds from disposal of subsidiary while maintaining control	577,330	660,488	176,062
Capital deduction from non-controlling interests and additional acquisition of interests in subsidiaries	(16,336)	(16,138)	(11,473)
Repayment of lease liabilities	(268,082)	(281,288)	(217,312)
Acquisition of treasury shares	0	(116,771)	(883,219)
Repayment of redeemable convertible preferred shares	0	0	(278,581)
Others, net	81,134	2,940	(2,516)
Net cash provided by (used in) financing activities	1,319,408	(768,666)	(1,090,868)
Effect of exchange rate fluctuation on cash held	(8,740)	112,950	(95,272)
Net increase in cash and cash equivalents	3,277,562	20,142	1,240,332
Cash and cash equivalents at beginning of the period	4,775,720	4,755,578	3,515,246
Cash and cash equivalents at end of the period	₩ 8,053,282	₩ 4,775,720	₩ 4,755,578

General Information

General Information	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
General Information	1. General Information General information about POSCO HOLDINGS INC., its 45 domestic subsidiaries including POSCO, 135 foreign subsidiaries including POSCO America Corporation (collectively “the Company”) and its 130 associates and joint ventures are as follows: (a) The controlling company POSCO HOLDINGS INC., the controlling company, was established on April 1, 1968, under the Commercial Code of the Republic of Korea. The shares of the Company have been listed on the Korea Exchange since June 10, 1988. The Company operates an investment business that controls and manages through ownership of shares of subsidiaries etc. On March 2, 2022, the Company established a new subsidiary, POSCO, by a vertical spin-off As of December 31, 2022, POSCO HOLDINGS INC.’s shareholders are as follows: Shareholder’s name Number of Ownership National Pension Service 7,706,725 9.11 BlackRock Fund Advisors(*1) 4,390,734 5.19 The Government of Singapore 3,336,926 3.95 Nippon Steel Corporation 2,894,712 3.42 FMR LLC (Fidelity Management&Research) 2,783,481 3.29 Others 63,458,652 75.04 84,571,230 100.00 (*1) Includes shares held by subsidiaries and others. As of December 31, 2022, the shares of POSCO HOLDINGS INC. are listed on the Korea Exchange, while its ADRs are listed on the New York Stock Exchange. (b) Consolidated subsidiaries Details of consolidated subsidiaries as of December 31, 2021 and 2022 are as follows: Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Domestic] POSCO Steel, rolled products and plates — — — 100.00 — 100.00 Pohang POSCO ENGINEERING & CONSTRUCTION., CO., LTD. Engineering and construction 52.80 — 52.80 52.80 — 52.80 Pohang POSCO STEELEON CO., Ltd. (formerly, COATED & COLOR STEEL Co., Ltd.) Coated steel manufacturing 56.87 — 56.87 — 56.87 56.87 Pohang POSCO ICT Computer hardware and software distribution 65.38 — 65.38 65.38 — 65.38 Pohang POSCO Research Institute Economic research and consulting 100.00 — 100.00 100.00 — 100.00 Seoul POSCO O&M CO.,Ltd. Business facility maintenance 47.17 52.83 100.00 47.17 52.83 100.00 Seoul POSCO A&C Architecture and consulting 45.66 54.34 100.00 45.66 54.34 100.00 Seoul POSCO Venture Capital Co., Ltd. Investment in venture companies 95.00 — 95.00 95.00 — 95.00 Pohang eNtoB Corporation Electronic commerce 7.50 59.94 67.44 — 69.32 69.32 Seoul POSCO CHEMICAL CO., LTD. Refractories, Anode/Cathode materials manufacturing and sales 59.72 — 59.72 59.76 — 59.76 Pohang POSCO FLOW Co., Ltd. (formerly, POSCO-Terminal Co., Ltd.) Transporting and warehousing 100.00 — 100.00 100.00 — 100.00 Gwangyang POSCO M-TECH Packing materials manufacturing and sales 48.85 — 48.85 — 48.85 48.85 Pohang POSCO ENERGY CO., LTD. Generation of electricity 100.00 — 100.00 100.00 — 100.00 Seoul PNR Steel by product manufacturing and sales 70.00 — 70.00 — 70.00 70.00 Pohang Future Creation Fund Postech Early Stage account Investment in venture companies — 40.00 40.00 — 40.00 40.00 Seoul POSCO WOMAN’S FUND Investment in venture companies — 40.00 40.00 — 40.00 40.00 Seoul SPH Co, LTD. House manufacturing and management — 100.00 100.00 — 100.00 100.00 Incheon POSCO Group University Education service and real estate business 100.00 — 100.00 100.00 — 100.00 Incheon Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Domestic] Growth Ladder POSCO K-Growth Investment in venture companies — 50.00 50.00 — 50.00 50.00 Pohang 2015 POSCO New technology II Fund Investment in venture companies — 25.00 25.00 — — — Pohang POSCO Research & Technology Intellectual Property Services and consulting 100.00 — 100.00 100.00 — 100.00 Seoul TANCHEON E&E Refuse derived fuel and power generation — 100.00 100.00 — 100.00 100.00 Seoul POSCO Humans Construction 75.49 24.51 100.00 — 100.00 100.00 Pohang Mapo Hibroad Parking Co., Ltd. Construction — 71.00 71.00 — 71.00 71.00 Seoul Busan E&E Co., Ltd. Refuse derived fuel and power generation 70.00 — 70.00 70.00 — 70.00 Busan POSCO INTERNATIONAL Corporation Trading, energy & resource development and others 62.91 0.03 62.94 62.92 — 62.92 Incheon Pohang Scrap Recycling Distribution Center Co., Ltd. Steel processing and sales — 51.00 51.00 — 51.00 51.00 Pohang Songdo Development PMC (Project Management Company) LLC. Housing business agency — 100.00 100.00 — 100.00 100.00 Incheon Korea Fuel Cell Fuel cell — 100.00 100.00 — 100.00 100.00 Pohang POSCO GEM fund no1 Investment in venture companies 98.81 1.19 100.00 98.81 1.19 100.00 Pohang POSCO MOBILITY SOLUTION STC, TMC, Plate manufacturing and sales — 100.00 100.00 — 100.00 100.00 Cheonan P&O Chemical Co., Ltd. Chemical production — 51.00 51.00 — 51.00 51.00 Gwangyang Posco New Growth Investment in venture companies 99.66 0.34 100.00 99.67 0.18 99.85 Seoul IMP Fund I Investment in venture companies 98.04 — 98.04 98.04 — 98.04 Pohang POSCO-Pilbara LITHIUM SOLUTION CO., Ltd. Lithium manufacturing and sales 100.00 — 100.00 82.00 — 82.00 Gwangyang POSCO-HY Non-ferrous 65.00 — 65.00 — 65.00 65.00 Gwangyang Consus Pf private Real Estate Fund REITs — 66.67 66.67 — 66.67 66.67 — New Energy Hub Electricity and gas supply 87.44 12.56 100.00 50.00 50.00 100.00 Gwangyang Posco Busan New deal Fund Investment in venture companies — 32.00 32.00 — 32.00 32.00 Pohang Shinan Green Energy Co., LTD Electricity production — 54.53 54.53 — 54.53 54.53 Shinahn eSteel4U Wholesales and retail — — — — 61.12 61.12 Seoul POSCO Social Investment Fund Investment in venture companies — — — 20.00 50.00 70.00 Pohang Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Domestic] POSCO Silicon Solution Co., Ltd (formerly, TERA TECHNOS CO., Ltd.) Other enginerring R&D industries — — — 100.00 — 100.00 Sejong Consus Pf Private Real Estate Fund No.2 Real estate development — — — — 66.67 66.67 — POSCO GS Eco Materials Co., Ltd Rechargeable battery — — — 100.00 — 100.00 Seoul POSCO Lithium Solution Co., Ltd. Lithium manufacturing and sales — — — 100.00 — 100.00 Gwangyang [Foreign] POSCO America Corporation Research&Consulting 99.45 0.55 100.00 99.45 0.55 100.00 USA POSCO AUSTRALIA PTY LTD Raw material sales & mine development 100.00 — 100.00 100.00 — 100.00 Australia POSCO Canada Ltd. Coal sales 100.00 — 100.00 100.00 — 100.00 Canada POSCAN ELKVIEW COAL LTD. Coal sales — 100.00 100.00 — — — Canada POSCO Asia Co., Ltd. Finance 100.00 — 100.00 100.00 — 100.00 China POSCO-CTPC Co., Ltd. Steel manufacturing and sales 100.00 — 100.00 100.00 — 100.00 China POSCO E&C Vietnam Co., Ltd. Steel structure manufacturing and sales — 100.00 100.00 — 100.00 100.00 Vietnam POSCO (Zhangjiagang) Stainless Steel Co.,Ltd. Stainless steel manufacturing and sales 58.60 23.88 82.48 58.60 23.88 82.48 China POSCO (Thailand) Company Limited Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Thailand POSCO-MKPC SDN BHD Steel manufacturing and sales 70.00 — 70.00 — 70.00 70.00 Malaysia Qingdao Pohang Stainless Steel Co., Ltd. Stainless steel manufacturing and sales 70.00 30.00 100.00 70.00 30.00 100.00 China POSCO(Suzhou) Automotive Processing Steel manufacturing and sales 90.00 10.00 100.00 90.00 10.00 100.00 China POSCO-China Qingdao Processing Steel manufacturing and sales 100.00 — 100.00 100.00 — 100.00 China POS-ORE Iron ore development and sales — 100.00 100.00 — 100.00 100.00 Australia POSCO-China Holding Corp. Holding company 100.00 — 100.00 100.00 — 100.00 China POSCO JAPAN Co., Ltd. Steel Marketing, demand development and 100.00 — 100.00 100.00 — 100.00 Japan POS-CD Coal sales — 100.00 100.00 — 100.00 100.00 Australia POS-GC Coal sales — 100.00 100.00 — 100.00 100.00 Australia Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO-India Private Limited Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 India POSCO-India Pune Processing Center. Pvt. Ltd. Steel manufacturing and sales 65.00 — 65.00 65.00 — 65.00 India POSCO Japan PC CO.,LTD Steel manufacturing and sales — 86.12 86.12 — 86.12 86.12 Japan POSCO-CFPC Co., Ltd. Steel manufacturing and sales 39.60 60.40 100.00 44.66 55.34 100.00 China POSCO E&C CHINA Co., Ltd. Civil engineering and construction — 100.00 100.00 — 100.00 100.00 China POSCO MPPC S.A. de C.V. Steel manufacturing and sales 21.02 75.29 96.31 21.02 75.29 96.31 Mexico Zhangjigang Pohang Port Co., Ltd. Loading and unloading service — 100.00 100.00 — 100.00 100.00 China POSCO-VIETNAM Co., Ltd. Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Vietnam POSCO MEXICO S.A. DE C.V. Automotive steel sheet manufacturing and sales 83.28 14.88 98.16 83.28 14.88 98.16 Mexico POSCO-Poland Wroclaw Processing Center Steel manufacturing and sales 60.00 — 60.00 60.00 — 60.00 Poland POS-NP Coal sales — 100.00 100.00 — 100.00 100.00 Australia DAEWOO INTERNATIONAL SHANGHAI WAIGAOQIAO CO., LTD Intermediary trade & bonded warehouse operation — 100.00 100.00 — 100.00 100.00 China PT. Bio Inti Agrindo Forest resources development — 85.00 85.00 — 85.00 85.00 Indonesia POSCO ENGINEERING AND CONSTRUCTION AUSTRALIA (POSCO E&C AUSTRALIA) PTY LTD Construction and engineering service — 100.00 100.00 — 100.00 100.00 Australia POSCO-TISCO (JILIN) PROCESSING CENTER Co., Ltd. Steel manufacturing and sales 50.00 10.00 60.00 50.00 10.00 60.00 China POSCO Thainox Public Company Limited STS cold-rolled steel manufacturing and sales 74.56 — 74.56 — 74.56 74.56 Thailand HUNCHUN POSCO HMM INTERNATIONAL LOGISTICS CO., LTD. Logistics — 81.55 81.55 — 81.55 81.55 China POSCO INTERNATIONAL VIETNAM CO., LTD Trading business — 100.00 100.00 — 100.00 100.00 Vietnam Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO(Chongqing) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 90.00 10.00 100.00 — 100.00 100.00 China SUZHOU POSCO-CORE TECHNOLOGY CO., LTD. Component manufacturing and sales 33.91 66.09 100.00 — 100.00 100.00 China PT.Krakatau Posco Chemical Calcination Quicklime manufacturing and sales — 80.00 80.00 — 80.00 80.00 Indonesia POSCO AFRICA (PROPRIETARY) LIMITED Mine development 100.00 — 100.00 100.00 — 100.00 South Africa POSCO ICT BRASIL IT service and engineering — 100.00 100.00 — 100.00 100.00 Brazil POSCO Center Beijing Real estate development, rental and management — 100.00 100.00 — 100.00 100.00 China POSCO-Malaysia SDN. BHD. Steel manufacturing and sales 81.79 13.63 95.42 — 95.42 95.42 Malaysia PT KRAKATAU BLUE WATER Wastewater treamtment facilities — 67.00 67.00 — 67.00 67.00 Indonesia POSCO INTERNATIONAL MYANMAR CO.,LTD. Trading business — 100.00 100.00 — 100.00 100.00 Myanmar POSCO-Italy Processing Center Stainless steel sheet manufacturing and sales 88.89 11.11 100.00 88.89 11.11 100.00 Italy Myanmar POSCO C&C Company,Limited. Steel manufacturing and sales — 70.00 70.00 — 70.00 70.00 Myanmar POSCO ICT VIETNAM IT service and electric control engineering — 100.00 100.00 — 100.00 100.00 Vietnam POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE.LTD. Real estate development — 75.00 75.00 — 75.00 75.00 Singapore Myanmar POSCO Engineering & Construction Company, Limited. Construction and engineering service — 100.00 100.00 — 100.00 100.00 Myanmar POS-Minerals Mine development management and sales — 100.00 100.00 — 100.00 100.00 USA POSCO(Wuhu) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 68.57 31.43 100.00 68.57 31.43 100.00 China Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO Engineering and Construction India Private Limited Civil engineering and construction — 100.00 100.00 — 100.00 100.00 India POSCO COATED STEEL (THAILAND) CO., LTD. Vehicle steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Thailand POSCO INTERNATIONAL AMARA Co., Ltd. Real estate development — 85.00 85.00 — 85.00 85.00 Myanmar POSMATE-CHINA CO., LTD Business facility maintenance — 100.00 100.00 — 100.00 100.00 China POSCO-Mexico Villagran Wire-rod Steel manufacturing and sales 56.75 10.00 66.75 56.75 10.00 66.75 Mexico POSCO ChengDu Processing Center Steel manufacturing and sales 33.00 10.00 43.00 — 43.00 43.00 China POSCO(Suzhou) Steel Processing Center CO., LTD. Steel manufacturing and sales 30.00 70.00 100.00 — 100.00 100.00 China POSCO E&C SMART S DE RL DE CV Civil engineering and construction — 100.00 100.00 — 100.00 100.00 Mexico POSCO Philippine Manila Processing Center, Inc. Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Philippines POSCO E&C HOLDINGS CO.,Ltd. Holding company — 100.00 100.00 — 100.00 100.00 Thailand POSCO INTERNATIONAL POWER (PNGLAE) LTD. Electricity production — 100.00 100.00 — 100.00 100.00 Papua New Guinea PT.Krakatau Posco Social Enterprise Social enterprise — 100.00 100.00 — 100.00 100.00 Indonesia Ventanas Philippines Construction Inc Construction — 100.00 100.00 — 100.00 100.00 Philippines SANPU TRADING Co., Ltd. Raw material trading — 70.04 70.04 — 70.04 70.04 China Zhangjiagang BLZ Pohang International Trading Steel Intermediate trade — 100.00 100.00 — 100.00 100.00 China POSCO RU Limited Liability Company Trade and business development 100.00 — 100.00 100.00 — 100.00 Russia GOLDEN LACE POSCO INTERNATIONAL CO., LTD. Rice processing — 60.00 60.00 — 60.00 60.00 Myanmar POSCO ICT China CO.,LTD IT service and DVR business — 100.00 100.00 — 100.00 100.00 China Pos-Sea Steel Intermediate trade — 100.00 100.00 — 100.00 100.00 Singapore POSCO Europe Steel Distribution Center Logistics & Steel sales 50.00 20.00 70.00 — 70.00 70.00 Slovenia Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO ENGINEERING (THAILAND) CO., LTD. Construction and engineering service — 100.00 100.00 — 100.00 100.00 Thailand POSCO VST CO., LTD. Stainless steel sheet manufacturing and sales 95.65 — 95.65 95.65 — 95.65 Vietnam POSCO INTERNATIONAL UKRAINE, LLC. Grain sales — 100.00 100.00 — 100.00 100.00 Ukraine Zhangjiagang Pohang Refractories Co., Ltd. Refractory materials sales & furnacemaintenance — 51.00 51.00 — 51.00 51.00 China POSCO Maharashtra Steel Private Limited Steel manufacturing and sales 100.00 — 100.00 100.00 — 100.00 India POSCO INDIA PROCESSING CENTER PRIVATE LIMITED Steel manufacturing and sales 93.34 1.98 95.32 93.34 1.98 95.32 India POSCO TNPC Otomotiv Celik San. Ve Tic. A.S Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Turkey POSCO Vietnam Processing Center. Co.,Ltd Steel manufacturing and sales 94.05 5.95 100.00 94.05 5.95 100.00 Vietnam POSCO(Liaoning) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 90.00 10.00 100.00 90.00 10.00 100.00 China POSCO-Indonesia Jakarta Processing Center Steel manufacturing and sales 70.51 21.69 92.20 70.51 21.69 92.20 Indonesia PT.MRI Mine development 65.00 — 65.00 65.00 — 65.00 Indonesia POSCO TMC INDIA PRIVATE LIMITED Steel manufacturing and sales — 100.00 100.00 — 100.00 100.00 India POSCO AMERICA ALABAMA PROCESSING CENTER CO., LTD. Steel manufacturing and sales — 97.80 97.80 — 97.80 97.80 USA POSCO(Yantai) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 90.00 10.00 100.00 90.00 10.00 100.00 China POSCO India Steel Distribution Center Private Ltd. Steel logistics — 100.00 100.00 — 100.00 100.00 India POSCO YAMATO VINA STEEL JOINT STOCK COMPANY Steel manufacturing and sales 51.00 — 51.00 — 51.00 51.00 Vietnam PT.POSCO ICT INDONESIA IT service and electric control engineering — 66.99 66.99 — 66.99 66.99 Indonesia POSCO NCR Coal Ltd. Coal sales — 100.00 100.00 — 100.00 100.00 Canada Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO WA PTY LTD Iron ore sales & mine development 100.00 — 100.00 100.00 — 100.00 Australia POSCO AUSTRALIA GP PTY LIMITED Resource development — 100.00 100.00 — 100.00 100.00 Australia PT. KRAKATAU POSCO ENERGY Electricity production construction and — 90.00 90.00 — 90.00 90.00 Indonesia POSCO INTERNATIONAL AMERICA CORP. Trading business — 100.00 100.00 — 100.00 100.00 USA POSCO INTERNATIONAL Deutschland GMBH Trading business — 100.00 100.00 — 100.00 100.00 Germany POSCO INTERNATIONAL JAPAN CORP. Trading business — 100.00 100.00 — 100.00 100.00 Japan POSCO INTERNATIONAL SINGAPORE PTE. LTD. Trading business — 100.00 100.00 — 100.00 100.00 Singapore POSCO INTERNATIONAL ITALIA S.R.L. Trading business — 100.00 100.00 — 100.00 100.00 Italy POSCO INTERNATIONAL (CHINA) CO., LTD Trading business — 100.00 100.00 — 100.00 100.00 China POSCO INTERNATIONAL TEXTILE LLC. Textile manufacturing — 100.00 100.00 — 100.00 100.00 Uzbekistan POSCO INTERNATIONAL AUSTRALIA Resource development — 100.00 100.00 — 100.00 100.00 Australia POSCO MAURITIUS LIMITED Coal development and sales — 100.00 100.00 — 100.00 100.00 Mauritius PT. KRAKATAU POSCO Steel manufacturing and sales 70.00 — 70.00 50.00 — 50.00 Indonesia POSCO INTERNATIONAL MEXICO, S.A de C.V.. Trading business — 100.00 100.00 — 100.00 100.00 Mexico POSCO INTERNATIONAL MALAYSIA SDN BHD Trading business — 100.00 100.00 — 100.00 100.00 Malaysia PT.POSCO INDONESIA INTI Consulting 100.00 — 100.00 100.00 — 100.00 Indonesia POSCO INTERNATIONAL SHANGHAI CO., LTD. Trading business — 100.00 100.00 — 100.00 100.00 China Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] PGSF, L.P. Investment in bio tech Industry — 100.00 100.00 — 100.00 100.00 USA POSCO INTERNATIONAL INDIA PVT., LTD Trading business — 100.00 100.00 — 100.00 100.00 India POSCO(Dalian) IT Center Development Co., Ltd. Real estate development and investment — 100.00 100.00 — 100.00 100.00 China PT. POSCO E&C INDONESIA Civil engineering and construction — 100.00 100.00 — 100.00 100.00 Indonesia HUME COAL PTY LTD Raw material manufacturing — 100.00 100.00 — 100.00 100.00 Australia Brazil Sao Paulo Steel Processing Center Steel manufacturing and sales — 76.00 76.00 — 76.00 76.00 Brazil POSCO ENGINEERING & CONSTRUCTION DO BRAZIL LTDA. Construction — 100.00 100.00 — 100.00 100.00 Brazil POSCO ASSAN TST STEEL INDUSTRY Steel manufacturing and sales 60.00 10.00 70.00 60.00 10.00 70.00 Turkey HONG KONG POSCO E&C (CHINA) INVESTMENT Co., Ltd. Real estate development and investment — 100.00 100.00 — 100.00 100.00 Hongkong JB CLARK HILLS Apartment construction — 70.00 70.00 — 70.00 70.00 Philippines POS-LT Lithium mining investment — 100.00 100.00 — 100.00 100.00 Australia ZHEJIANG POSCO-HUAYOU ESM CO., LTD Anode material manufacturing 60.00 — 60.00 18.70 41.30 60.00 China POSCO Argentina S.A.U. Mineral exploration/manufacturing/sales 100.00 — 100.00 100.00 — 100.00 Argentina GRAIN TERMINAL HOLDING PTE. LTD. Trading business — 75.00 75.00 — 75.00 75.00 Singapore Mykolaiv Milling Works PJSC. Grain trading — 100.00 100.00 — 100.00 100.00 Ukraine Yuzhnaya Stevedoring Company Limited LLC. Cargo handling — 100.00 100.00 — 100.00 100.00 Ukraine Posco International (Thailand) Co., Ltd. Trade — 100.00 100.00 — 100.00 100.00 Thailand PT POSCO INTERNATIONAL INDONESIA Trade — 100.00 100.00 — 100.00 100.00 Indonesia PEC POWERCON SDN. BHD. Construction and engineering service — 100.00 100.00 — 100.00 100.00 Malaysia POSCO CHEMICAL Free Zone Enterprise Refractory Construction — 100.00 100.00 — — — Nigeria Poland Legnica Sourcing Center Sp. z o.o Non-ferrous 100.00 — 100.00 100.00 — 100.00 Poland Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO INTERNATIONAL E&P MALAYSIA SDN. BHD. Extraction of Crude petroleum and Natural gas — 100.00 100.00 — 100.00 100.00 Malaysia AGPA PTE. LTD. Holding company — 100.00 100.00 — 100.00 100.00 Singapore Senex Holdings PTY LTD(*1) Extraction of Crude petroleum and Natural gas — — — — 50.10 50.10 Australia Posco International Mexico e-Mobility Electric Vehicle Parts Manufacturing — — — — 100.00 100.00 Mexico POSCO CHEMICAL CANADA INC. Holding company — — — — 100.00 100.00 Canada ULTIUM CAM GP INC. Holding company — — — — 85.00 85.00 Canada ULTIUM CAM LIMITED PARTNERSHIP Anode material manufacturing — — — — 85.00 85.00 Canada POSCO(Wuhan) Automotive Processing Center Co.,Ltd Steel manufacturing and sales — — — 68.57 31.43 100.00 China POSCO BRAZIL LTDA Office Administration, Management Consulting — — — — 100.00 100.00 Brazil (*1) Senex Holdings PTY LTD includes 19 subsidiaries including Senex Energy Limited. The controlling company’s interests in the subsidiaries increased by ￦ million (POSCO CHEMICAL CO., LTD and others) and decreased by ￦ million (POSCO CHEMICAL CO., LTD and others) in 2021 and 2022, respectively, as a result of changes in the Company’s ownership investment in subsidiaries that did not result in a loss of control. POSCO HOLDINGS INC. received dividends of ￦ ￦ As of December 31, 2022, there are no restrictions on the ability of subsidiaries to transfer funds to the controlling company, such as in the form of cash dividends, repayment of loans or payment of advances. (c) Details of non-controlling 1) December 31, 2020 (in millions of Won) POSCO PT. POSCO POSCO POSCO Others Total Current assets ￦ 3,992,996 503,633 774,817 4,614,481 465,158 7,207,141 17,558,226 Non-current 3,410,528 2,366,359 1,229,349 1,823,229 187,415 4,789,484 13,806,364 Current liabilities (2,649,187 ) (1,722,805 ) (203,443 ) (2,933,668 ) (278,335 ) (6,354,111 ) (14,141,549 ) Non-current (1,816,160 ) (1,235,948 ) (833,857 ) (978,672 ) (24,132 ) (1,727,139 ) (6,615,908 ) Equity 2,938,177 (88,761 ) 966,866 2,525,370 350,106 3,915,375 10,607,133 Non-controlling 1,089,082 (26,628 ) 374,582 1,191,998 121,200 1,330,280 4,080,514 Sales 19,230,652 1,691,310 1,524,146 6,943,725 935,958 21,059,978 51,385,769 Profit (loss) for the period 173,155 (179,403 ) 29,720 315,139 8,961 (44,660 ) 302,912 Profit (loss) attributable to non-controlling 64,183 (53,821 ) 11,514 148,748 3,102 (19,899 ) 153,827 Cash flows from operating activities 324,822 62,276 11,021 451,803 21,403 123,108 994,433 Cash flows from investing activities (38,535 ) 212 (162,861 ) (398,937 ) (4,841 ) (93,565 ) (698,527 ) Cash flows from financing activities (before dividends to non-controlling (99,765 ) (45,207 ) 122,736 9,475 (302 ) (192,311 ) (205,374 ) Dividend to non-controlling (32,004 ) — (9,451 ) (9,867 ) (2,628 ) (6,102 ) (60,052 ) Effect of exchange rate fluctuation on cash held (2,425 ) (1,421 ) (398 ) (2,220 ) (74 ) 702 (5,836 ) Net increase (decrease) in cash and cash equivalents 152,093 15,860 (38,953 ) 50,254 13,558 (168,168 ) 24,644 2) December 31, 2021 (in millions of Won) POSCO PT. POSCO POSCO POSCO Others Total Current assets ￦ 5,952,771 968,129 2,071,307 5,221,691 423,422 9,496,214 24,133,534 Non-current 3,322,590 2,388,139 1,708,558 1,929,362 185,508 4,772,409 14,306,566 Current liabilities (4,537,785 ) (1,155,003 ) (604,333 ) (3,100,971 ) (263,794 ) (7,918,852 ) (17,580,738 ) Non-current (1,666,455 ) (1,778,668 ) (835,222 ) (1,306,648 ) (10,051 ) (1,706,779 ) (7,303,823 ) Equity 3,071,121 422,597 2,340,310 2,743,434 335,085 4,642,992 13,555,539 Non-controlling 1,138,360 126,779 942,660 1,294,925 116,000 1,542,960 5,161,684 Sales 30,545,740 2,694,601 1,939,524 6,693,933 832,127 28,538,963 71,244,888 Profit (loss) for the period 223,845 500,801 128,960 266,821 (18,802 ) 690,197 1,791,822 Profit (loss) attributable to non-controlling 82,972 150,240 51,944 125,942 (6,509 ) 189,590 594,179 Cash flows from operating activities (235,359 ) 151,393 36,745 113,021 (18,494 ) 130,828 178,134 Cash flows from investing activities (91,619 ) (4,022 ) (639,965 ) (243,463 ) (17,309 ) (86,585 ) (1,082,963 ) Cash flows from financing activities (before dividends to non-controlling 279,529 (81,187 ) 595,521 36,359 (226 ) 9,604 839,600 Dividend to non-controlling (32,004 ) — (7,370 ) (9,867 ) (2,628 ) (7,671 ) (59,540 ) Effect of exchange rate fluctuation on cash held 1,937 3,916 6 3,048 3 6,216 15,126 Net increase (decrease) in cash and cash equivalents (77,516 ) 70,100 (15,063 ) (100,902 ) (38,654 ) 52,392 (109,643 ) 3) December 31, 2022 (in millions of Won) POSCO PT. POSCO POSCO POSCO Others Total Current assets ￦ 5,289,899 1,125,123 1,832,804 5,326,049 585,766 10,305,149 24,464,790 Non-current 3,470,861 3,062,378 2,261,649 2,033,432 226,598 7,264,540 18,319,458 Current liabilities (3,809,495 ) (2,486,616 ) (920,656 ) (3,372,310 ) (419,452 ) (8,680,121 ) (19,688,650 ) Non-current (2,203,923 ) (834,456 ) (938,447 ) (1,076,909 ) (4,431 ) (2,094,774 ) (7,152,940 ) Equity 2,747,342 866,429 2,235,350 2,910,262 388,481 6,794,794 15,942,658 Non-controlling 1,018,764 433,214 899,416 1,373,670 134,484 2,480,625 6,340,173 Sales 32,532,465 3,006,300 3,041,287 8,376,559 1,101,037 34,933,760 82,991,408 Profit (loss) for the period 323,749 140,967 114,365 174,061 42,832 269,926 1,065,900 Profit (loss) attributable to non-controlling 120,052 70,483 46,016 82,158 14,828 106,091 439,628 Cash flows from operating activities 480,927 342,484 (27,009 ) (54,506 ) (594 ) 68,906 810,208 Cash flows from investing activities (389,092 ) (372,345 ) (26,492 ) 160,750 3,973 (619,072 ) (1,242,278 ) Cash flows from financing activities (before dividends to non-controlling 136,954 (115,046 ) 107,266 154,946 (561 ) 614,001 897,560 Dividend to non-controlling (36,585 ) — (9,360 ) (14,800 ) (2,628 ) (16,921 ) (80,294 ) Effect of exchange rate fluctuation on cash held 853 12,690 (2,469 ) (450 ) (35 ) (1,412 ) 9,177 Net increase (decrease) in cash and cash equivalents 193,057 (132,217 ) 41,936 245,940 155 45,502 394,373 (d) Details of associates and joint ventures 1) Associates Details of associates as of December 31, 2021 and 2022 are as follows: Ownership (%) Region Investee Category of business 2021 2022 [Domestic] New Songdo International City Development, LLC Real estate rental 29.90 29.90 Incheon Gale International Korea, LLC Real estate rental 29.90 29.90 Incheon SNNC Raw material manufacturing and sales 49.00 49.00 Gwangyang KONES, Corp. Technical service 26.72 26.72 Gyeongju CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd Real estate development 29.53 29.53 Chungju DAEHO GLOBAL MANAGEMENT CO., LTD. Investment advisory service 35.82 35.82 Pohang Mokpo Deayang Industrial Corporation Real estate development and rental 27.40 27.40 Mokpo Gunggi Green Energy(*1) Electricity generation 19.00 19.00 Hwaseong Pohang Special Welding Co.,Ltd. Welding material and tools manufacturing and sales 50.00 50.00 Pohang EQP POSCO Global NO1 Natural Resources Private Equity Fund Investment in new technologies 42.82 27.23 Seoul KC Chemicals CORP.(*1) Machinery manufacturing 19.00 18.76 Hwaseong POSTECH Social Enterprise Fund(*1) Investment in new technologies 9.17 9.17 Seoul QSONE Co.,Ltd. Real estate rental and facility management 50.00 50.00 Seoul Chun-cheon Energy Co., Ltd Electricity generation 49.10 49.10 Chuncheon Noeul Green Energy(*1) Electricity generation 10.00 10.00 Seoul Posco-IDV Investment in new technologies 17.86 17.86 Seoul Daesung Steel(*1) Steel sales 17.54 17.54 Busan Pohang E&E Co., LTD Investment in waste energy 30.00 30.00 Pohang POSCO Energy Valley Fund Investment in new technologies 20.00 20.00 Pohang Hyundai Invest Guggenheim CLO Qualified Private Special Asset Trust No.2 Investment in new technologies 38.47 38.57 Seoul Posco Agri-Food Export Fund Investment in new technologies 30.00 30.00 Seoul Posco Culture Contents Fund Investment in new technologies 31.67 31.67 Seoul PCC Amberstone Private Equity Fund 1(*1) Investment in new technologies 8.80 8.80 Seoul UITrans LRT Co., Ltd. Transporting 38.19 38.19 Seoul POSCO Advanced Technical Staff Fund(*1) Investment in new technologies 15.87 15.86 Seoul POSCO 4th Industrial Revolution Fund(*1) Investment in new technologies 20.00 19.05 Seoul Pureun Tongyeong Enviro Co., Ltd. Sewerage treatment 20.40 20.40 Tongyeong Pure Gimpo Co., Ltd. Construction 28.79 28.79 Gimpo Posgreen Co., Ltd.(*1) Lime and plaster manufacturing 19.00 19.00 Gwangyang Clean Iksan Co., Ltd. Construction 23.50 23.50 Iksan Innovalley Co., Ltd. Real estate development 28.77 28.77 Yongin BLUE OCEAN Private Equity Fund Private equity financial 27.52 27.52 Seoul Western Inland highway CO.,LTD.(*4) Construction 20.39 — Incheon Pocheon-Hwado Highway Corp. Investment in Expressway 23.27 27.64 Incheon INNOPOLIS Job Creation Fund II(*1) Investment in new technologies 6.13 6.13 Seoul Samcheok Blue Power Co.,Ltd. Generation of electricity 34.00 34.00 Samcheok INKOTECH, INC.(*1) Electricity generation and sales 10.00 10.00 Seoul PCC Social Enterprise Fund II(*1) Investment in new technologies business 16.67 16.67 Seoul PCC Amberstone Private Equity Fund II(*1) Private equity trust 19.91 19.91 Seoul PCC-Conar Investment in new technologies business 14.68 15.34 Pohang HYOCHUN Co., Ltd(*1) Screen door operation and other 18.00 18.00 Seoul RPSD Project Co., Ltd(*4) Real estate development 29.00 — Incheon Ownership (%) Region Investee Category of business 2021 2022 [Domestic] PCC EV Fund(*3) Investment in new technologies business 18.18 — Pohang IBKC-PCC Investment in new technologies business 18.18 18.18 Pohang 2019 PCC Materials and Parts Fund(*1) Investment in new technologies business 8.70 8.70 Pohang PCC-Woori Investment in new technologies business 18.85 18.85 Pohang KPGE Inc.(*3) Wholesales and retail, generator material, trade 25.00 — Busan CURO CO.,LTD.(*1) Manufacturing, construction 0.54 0.53 Ulsan Link City PFV Inc. Contruction, housing construction and sales 44.00 44.00 Uijeongbu BNH-POSCO Investment in new technologies business 18.14 18.14 Pohang PCC-BM Investment in new technologies business 8.77 8.77 Pohang Energy Innovation Fund I(*1) Investment in new technologies business 10.11 10.11 Pohang Consus PS development Professional Private Real Estate Fund Real estate development 50.00 50.00 Seoul POSTECH Holdings 4th Fund Private Investment Association 40.00 40.00 Pohang SNU STH IP Fund Private Investment Association 33.33 33.33 Seoul PCC-BM Investment in new technologies business 13.70 13.70 Pohang G&G Technology Innovation Fund No.1(*1) Investment in new technologies business 13.97 13.97 Seongnam NPX-PCC Investment in new technologies business 19.96 19.96 Pohang C&-PCC Investment in new technologies business 0.68 0.68 Pohang 2020 POSCO-MOORIM Bio New Technology Fund(*1) Investment in new technologies business 5.00 5.00 Pohang PCC-KAI Investment in new technologies business 19.12 19.12 Seoul Human Eco-Land Sewage facilities management 27.95 — Ansan 2021 PCC Bio New Technology Fund(*1) Investment in new technologies 5.45 5.45 Pohang Consus BG Private Real Estate Fund No.2 Real estate development 50.00 50.00 Seoul Consus OS Private Real Estate Fund Real estate development 50.00 50.00 Seoul Consus NewDeal Infra Development Specialized Private Special Asset Investment Trust 1 Investment Association 40.00 40.00 Seoul Hybrid ESG Secondary Venture No.1(*1) Investment Association 18.27 18.27 Pohang PCC-Xinova PRE-IPO Investment in new technologies business — 9.09 Pohang PCC-Bailey Investment in new technologies business — 7.27 Pohang Erae Ams Co.,Ltd.(*1,2) Automotive parts manufacturing — 16.66 Daegu CR Inotech Co., Ltd.(*1,2) Manufacturing — 19.00 Gwangyang Posco JK Solid Solution Co., ltd.(*2) Material manufacturing for rechargeable battery — 40.00 Yangsan [Foreign] VSC POSCO Steel Corporation(*3) Steel processing and sales 50.00 — Vietnam POSCHROME (PROPRIETARY) LIMITED Raw material manufacturing and sales 50.00 50.00 South Africa CAML RESOURCES PTY LTD Raw material manufacturing and sales 33.34 33.34 Australia Nickel Mining Company SAS Raw material manufacturing and sales 49.00 49.00 New PT. Wampu Electric Power Construction and civil engineering 20.00 20.00 Indonesia POSK(Pinghu) Steel Processing Center Co., Ltd. Steel processing and sales 20.00 20.00 China PT.INDONESIA POS CHEMTECH CHOSUN Ref Refractory manufacturing and sales 30.19 30.19 Indonesia NS-Thainox Steel manufacturing and sales 49.00 49.00 Thailand Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd(*4) Tinplate manufacturing and sales 34.00 — China PT. Tanggamus Electric Power(*1) Construction and civil engineering 17.50 17.50 Indonesia LLP POSUK Titanium Titanium manufacturing and sales 35.30 35.30 Kazakhstan IMFA ALLOYS FINLEASE LTD Raw material manufacturing and sales 24.00 24.00 India Ownership (%) Region Investee Category of business 2021 2022 [Foreign] KRAKATAU POS-CHEM DONG-SUH Chemical by-product 19.

Statement of Compliance

Statement of Compliance	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Statement of Compliance	2. Statement of Compliance The consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”), as issued by the International Accounting Standards Board. The consolidated financial statements were authorized for issuance Basis of measurement The consolidated financial statements have been prepared on the historical cost basis, except for the following material items in the statement of financial position, as described in the accounting policy below. (a) Derivatives instruments measured at fair value (b) Financial instruments measured at fair value through profit or loss (c) Financial instruments measured at fair value through other comprehensive income (d) Defined benefit liabilities measured at the present value of the defined benefit obligation less the fair value of the plan assets Functional and presentation currency The financial statements of POSCO HOLDINGS INC. and subsidiaries are prepared in functional currency of each operation. These consolidated financial statements are presented in Korean Won, the POSCO HOLDINGS INC.’s functional currency which is the currency of the primary economic environment in which POSCO HOLDINGS INC. operates. Use of estimates and judgments The preparation of the consolidated financial statements in conformity with IFRS requires management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expenses. Actual results may differ from these estimates. Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognized prospectively. (a) Judgments Information about critical judgments in applying accounting policies that have the most significant effect on the amounts recognized in the consolidated financial statements is included in the following notes: • Note 1 - Subsidiaries, associates and joint ventures • Note 11 - Investments in associates and joint ventures • Note 12 - Joint operations During the year ended December 31, 2022, the Company recognized ￦ ￦ A During the year ended December 31, 2022, the Company assessed the extent of flood damage to its significant property, plant and equipment, as well as its inventories, and estimated the resulting impairment loss based on available information. While the extent of damage to the insured property, plant and equipment is still being evaluated, the Company has received insurance payments of ￦ additional (b) Assumptions and estimation uncertainties Information about assumptions and estimation uncertainties that have a significant risk of resulting in a material adjustment within the next fiscal year is included in the following notes: • Note 15 - Goodwill and other intangible assets, net • Note 20 - Provisions • Note 21 - Employee benefits • Note 23 - Financial instruments • Note 30 - Revenue – contract for revenue recognized over time • Note 36 - Income taxes • Note 39 - Commitments and contingencies (c) Measurement of fair value The Company’s accounting policies and disclosures require the measurement of fair values, for both financial and non-financial The valuation team regularly reviews significant unobservable inputs and valuation adjustments. If third party information, such as broker quotes or pricing services, is used to measure fair values, then the valuation team assesses the evidence obtained from the third parties to support the conclusion that such valuations meet the requirements of IFRS including the level in the fair value hierarchy in which such valuation techniques should be classified. Significant valuation issues are reported to the Company’s Audit Committee. When measuring the fair value of an asset or a liability, the Company uses market observable data as far as possible. Fair values are categorized into different levels in a fair value hierarchy based on the inputs used in the valuation techniques as follows. • Level 1 - unadjusted quoted prices in active markets for identical assets or liabilities. • Level 2 - inputs other than quoted prices included in Level 1 that are observable for the assets or liability, either directly or indirectly. • Level 3 - inputs for the assets or liability that are not based on observable market data. If the inputs used to measure the fair value of an asset or a liability might be categorized in different levels of the fair value hierarchy, then 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. The Company recognizes transfers between levels of the fair value hierarchy at the end of the reporting period during which the change has occurred. Information about the assumptions made in measuring fair values is included in the following note: • Note 23 - Financial instruments Changes in Accounting Policies Except for the standards and amendments applied for the first time for the reporting period beginning on January 1, 2022 described below, the Company has consistently applied accounting policies in these consolidated financial statements for all periods presented. (a) IAS No.16 “Property, plant and equipment” The amendments prohibit deducting from the cost of an item of property, plant and equipment any proceeds from selling items produced while the Company is preparing the asset for its intended use. The cumulative effect of the initial adoption of the amendments is recognized by adjusting the beginning balance of retained earnings on the start date of earliest period presented for comparison. The amendments did not have any impact on the beginning balances of the consolidated financial statements. (b) IFRS No.3 “Business Combinations” The definition of assets and liabilities to be recognized is amended to refer to the revised conceptual framework for financial reporting. However, the amendments add an exception which allows IFRS No. 37 “Provisions, contingent liabilities and contingent assets” and IFRIC No. 21 “Levies” to be applied to the liabilities and contingent liabilities included in the scope of these standards. The amendments also clarify that contingent assets should not be recognized at the acquisition date. The amendments are applied to business combination s (c) I A 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 cumulative effect of the first application of the amendment is recognized by adjusting the beginning balance of retained earnings on the date of initial application. The amendments did not h av

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Significant Accounting Policies	3. Summary of Significant Accounting Policies The significant accounting policies applied by the Company in the preparation of its consolidated financial statements are included below. The accounting policies set out below have been applied consistently to all periods presented in these consolidated financial statements, except for the changes in accounting policies disclosed in Note 2. Basis of consolidation (a) Business combinations The Company accounts for business combinations using the acquisition method when the acquired set of activities and assets meets the definition of a business and control is transferred to the Company. In determining whether a particular set of activities and assets is a business, the Company assesses whether the set of assets and activities acquired includes, at a minimum, an input and substantive process and whether the acquired set has the ability to produce outputs. The Company has an option to apply a ‘concentration test’ that permits a simplified assessment of whether an acquired set of activities and assets is not a business. The optional concentration test is met if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets. The consideration transferred in the acquisition is generally measured at fair value, as are the identifiable net assets acquired. Any goodwill that arises is tested annually for impairment. Any gain on bargain purchase is recognized in profit or loss immediately. Transaction costs are expensed as incurred, except if related to the issue of debt or equity securities. The consideration transferred does not include amounts related to the settlement of pre-existing Any contingent consideration payable is measured at fair value at the acquisition date. If the contingent consideration is classified as equity, then it is not remeasured and settlement is accounted for within equity. Otherwise, subsequent changes in the fair value of the contingent consideration are recognized in profit or loss. If share-based payment awards (replacement awards) are required to be exchanged for awards held by the acquiree’s employees (acquiree’s awards), then all or a portion of the amount of the acquirer’s replacement awards is included in measuring the consideration transferred in the business combination. This determination is based on the market-based measure of the replacement awards compared with the market-based measure of the acquiree’s awards and the extent to which the replacement awards relate to pre-combination (b) Non-controlling Non-controlling (c) Subsidiaries Subsidiaries are entities controlled by the Company. The Company controls an entity when it is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. The financial statements of subsidiaries are included in the consolidated financial statements from the date on which control commences until the date on which control ceases. (d) Loss of control When the Company loses control over a subsidiary, it derecognizes the assets and liabilities of the subsidiary, and any related non-controlling (e) Interests in equity-accounted investees The Company’s interests in equity-accounted investees comprise interests in associates and joint ventures. Associates are those entities in which the Company has significant influence, but not control or joint control, over the financial and operating policies. A joint venture is an arrangement in which the Company has joint control, whereby the Company has rights to the net assets of the arrangement, rather than rights to its assets and obligations for its liabilities. Interests in associates and joint ventures are accounted for using the equity method. They are recognized initially at cost, which includes transaction costs. Subsequent to initial recognition, the consolidated financial statements include the Company’s share of the profit or loss and other comprehensive income of equity-accounted investees, until the date on which significant influence or joint control ceases. (f) Transactions eliminated on consolidation Intra-group balances and transactions, and any unrealized income and expenses arising from intra-group transactions, are eliminated. Unrealized gains arising from transactions with equity-accounted investees are eliminated against the investment to the extent of the Company’s interest in the investee. Unrealized losses are eliminated in the same way as unrealized gains, but only to the extent that there is no evidence of impairment. Foreign currency transactions and translation (a) Foreign currency transactions Foreign currency transactions are initially recorded using 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. Non-monetary Exchange differences arising on the settlement of monetary items or on translating monetary items at rates different from those at which they were translated on initial recognition during the period or in previous period end are recognized in profit or loss in the period in which they arise. When gains or losses on non-monetary non-monetary (b) Foreign operations If the presentation currency of the Company is different from a foreign operation’s functional currency, the financial statements of the foreign operation are translated into the presentation currency using the following methods: The assets and liabilities of foreign operations, whose functional currency is not the currency of a hyperinflationary economy, are translated to presentation currency using exchange rates at the reporting date. The income and expenses of foreign operations are translated to functional currency at exchange rates at the dates of the transactions. Foreign currency 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 translated to the presentation currency at the closing rate. When a foreign operation is disposed of, the relevant amount in the translation is transferred to profit or loss as part of the profit or loss on disposal. On the partial disposal of a subsidiary that includes a foreign operation, the relevant proportion of such cumulative amount is reattributed to non-controlling Foreign exchange gains or losses arising from a monetary item receivable from or payable to a foreign operation, the settlement of which is neither planned nor likely to occur in the foreseeable future and which in substance is considered to form part of the net investment in the foreign operation, are recognized in other comprehensive income in the translation reserve. Cash and cash equivalents Cash and cash equivalents comprise cash on hand, demand deposits, and short-term investments in highly liquid securities that are readily convertible to known amounts of cash with maturities of three months or less from the acquisition date and which are subject to an insignificant risk of changes in value. Equity investments are excluded from cash and cash equivalents. Non-derivative Trade receivables and debt securities issued are initially recognized when they are originated. All other financial assets are initially recognized when the Company becomes a party to the contractual provisions of the instruments. A financial asset (unless it is a trade receivable without a significant financing component) is initially measured at fair value plus, for an item not at financial assets measured at fair value through profit or loss, transaction costs that are directly attributable to its acquisition or issue. A trade receivable without a significant financing component is initially measured at the transaction price. On initial recognition, a financial asset is classified as measured at amortized cost, debt instruments measured at fair value through other comprehensive income, equity instruments measured at fair value through other comprehensive income or financial assets measured at fair value through profit or loss. Financial assets are not reclassified subsequent to their initial recognition unless the Company changes its business model for managing financial assets, in which case all affected financial assets are reclassified on the first day of the reporting period following the change in the business model. (a) Financial assets measured at amortized cost A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at fair value through profit or loss. • it is held within a business model whose objective is to hold assets to collect contractual cash flows, and • its contractual terms give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Financial assets measured at amortized cost are subsequently measured at amortized cost using the effective interest method. The amortized cost is reduced by impairment losses. Interest income, gains and losses on foreign currency translation and impairment losses are recognized in profit or loss. Any gain or loss on derecognition is recognized in profit or loss. (b) Debt instruments measured at fair value through other comprehensive income A debt instrument is measured at fair value through other comprehensive income if it meets both of the following conditions and is not designated as at fair value through profit or loss. • it is held within a business model whose objective is achieved by both collection contractual cash flows and selling financial assets, and • its contractual terms give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Debt instruments measured at fair value through other comprehensive income are subsequently measured at fair value. Interest income which is calculated using the effective interest method, gains and losses from foreign currency translation and impairment losses are recognized in profit or loss and other net profit or loss is recognized in other comprehensive income. At the time of elimination, other accumulated comprehensive income is reclassified to profit or loss. (c) Equity instruments measured at fair value through other comprehensive income On initial recognition of an equity investment that is not held for trading, the Company may irrevocably elect to present subsequent changes in the investment’s fair value in other comprehensive income. This election is made on an investment-by-investment Equity instruments measured at fair value through other comprehensive income are subsequently measured at fair value. Dividends are recognized as income in profit or loss unless the dividend clearly represents a recovery of part of the cost of the investment. Other net gains and losses are recognized in other comprehensive income and never reclassified to profit or loss. (d) Financial assets measured at fair value through profit or loss All financial assets not classified as measured at amortized cost or fair value through other comprehensive income as described above are measured at fair value through profit or loss. This includes all derivative financial assets. On initial recognition, the Company may irrevocably designate a financial asset that otherwise meets the requirements to be measured at amortized cost or fair value through other comprehensive income as at fair value through profit or loss if doing so eliminates or significantly reduces an accounting mismatch that would otherwise arise. Financial assets measured at fair value through profit or loss are subsequently measured at fair value. Net gains and losses, including any interest or dividend income, are recognized in profit or loss. (e) Derecognition of financial assets Financial assets are derecognized when the rights to receive cash flows from the financial assets have expired or have been transferred and the Company has transferred substantially all the risks and rewards of ownership. If a transfer does not result in derecognition because the Company has retained substantially all the risks and rewards of ownership of the transferred asset, the Company continues to recognize the transferred asset in its entirety and recognizes a financial liability for the consideration received. (f) Offsetting a financial asset and a financial liability Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statement of financial position only when the Company currently has a legally enforceable right to offset the recognized amounts, and there is the intention to settle on a net basis or to realize the asset and settle the liability simultaneously. Inventories Inventory costs, except materials-in-transit Inventories are measured at the lower of cost or net realizable value. The amount of any write-down of inventories to net realizable value and all losses of inventories are recognized as an expense in the period the write-down or loss occurs. The amount of any reversal of any write-down of inventories arising from an increase in net realizable value is recognized as a reduction in the amount of inventories recognized as cost of goods sold in the period in which the reversal occurs. The carrying amount of those inventories sold is recognized as cost of goods sold in the period in which the related revenue is recognized. Non-current Non-current non-current The Company recognizes an impairment loss for any initial or subsequent write-down of an asset or disposal group to fair value less costs to sell, and a gain for any subsequent increase in fair value less costs to sell, up to the cumulative impairment loss previously recognized. A non-current Investment property Property held to earn rentals or for capital appreciation or both is classified as investment property. Investment property is measured initially at its cost. Transaction costs are included in the initial measurement. Subsequently, investment property is carried at depreciated cost less any accumulated impairment losses. Subsequent costs are recognized in the carrying amount of investment property at cost or, if appropriate, as separate items if it is probable that future economic benefits associated with the item will flow to the Company and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. The costs of the day-to-day Depreciation methods, useful lives and residual values are reviewed at the end of each reporting date and adjusted, if appropriate. The change is accounted for as a change in an accounting estimate. Property, plant and equipment Property, plant and equipment are initially measured at cost and after initial recognition, are carried at cost less accumulated depreciation and any accumulated impairment losses. The cost of property, plant and equipment includes expenditures arising directly from the construction or acquisition of the asset, 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, when the Company has an obligation to remove the asset or restore the site, an estimate of the costs of dismantling and removing the item and restoring the site on which it is located. The cost of replacing a part of an item is recognized in the carrying amount of the item of property, plant and equipment, if the following recognition criteria are met: (a) it is probable that future economic benefits associated with the item will flow to the Company, and (b) the cost can be measured reliably. The carrying amount of the replaced part is derecognized at the time the replacement part is recognized. The costs of the day-to-day Items of property, plant and equipment are depreciated from the date they are available for use or, in respect of self-constructed assets, from the date that the asset is completed and ready for use. Other than land, the costs of an asset less its estimated residual value are depreciated. Depreciation of property, plant and equipment is recognized in profit or loss on a straight-line basis, which most closely reflects the expected pattern of consumption of the future economic benefits embodied in the asset, over the estimated useful lives of each component of an item of property, plant and equipment. Land is not depreciated. Each part of an item of property, plant and equipment with a cost that is significant in relation to the total cost of the item is depreciated separately. The gain or loss arising from the derecognition of an item of property, plant and equipment is included in profit or loss when the item is derecognized. The estimated useful lives of property, plant and equipment are as follows: Buildings 5-50 years Structures 4-50 Machinery and equipment 4-25 Vehicles 3-20 Tools 3-10 Furniture and fixtures 3-20 Lease assets 2-30 Bearer plants 20 years The estimated residual value, useful lives and the depreciation method are reviewed at least at the end of each reporting period and, if expectations differ from previous estimates, the changes are accounted for as changes in accounting estimates. Borrowing costs The Company capitalizes borrowing costs directly attributable to the acquisition, construction or production of a qualifying asset as part of the cost of that asset. Other borrowing costs are recognized in expense as incurred. A qualifying asset is an asset that requires a substantial period of time to get ready for its intended use or sale. Financial assets and inventories that are manufactured or otherwise produced over a short period of time are not qualifying assets. Assets that are ready for their intended use or sale when acquired are not qualifying assets. To the extent that the Company borrows funds specifically for the purpose of obtaining a qualifying asset, the Company determines the amount of borrowing costs eligible for capitalization as the actual borrowing costs incurred on that borrowing during the period less any investment income on the temporary investment of those borrowings. The Company immediately recognizes other borrowing costs as an expense. To the extent that the Company borrows funds generally and uses them for the purpose of obtaining a qualifying asset, the Company shall determines the amount of borrowing costs eligible for capitalization by applying a capitalization rate to the expenditures on that asset. The capitalization rate is the weighted average of the borrowing costs applicable to the borrowings of the Company that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. The amount of borrowing costs that the Company capitalizes during a period does not exceed the amount of borrowing costs incurred during that period. Intangible assets Intangible assets are measured initially at cost and, subsequently, are carried at cost less accumulated amortization and accumulated impairment losses. Amortization of intangible assets except for goodwill is calculated on a straight-line basis over the estimated useful lives of intangible assets from the date that they are available for use. The residual value of intangible assets is zero. However, as there are no foreseeable limits to the periods over which club memberships are expected to be available for use, this intangible asset is determined as having an indefinite useful life and not amortized. Intellectual property rights 4-25 years Development expense 3-5 Port facilities usage rights 4-75 Other intangible assets 2-15 Amortization periods and the amortization methods for intangible assets with finite useful lives are reviewed at the end of each reporting period. The useful lives of intangible assets that are not being amortized are reviewed at the end of each reporting period to determine whether events and circumstances continue to support indefinite useful life assessments for those assets. Changes are accounted for as changes in accounting estimates. Expenditures on research activities, undertaken with the prospect of gaining new scientific or technical knowledge and understanding, are recognized in profit or loss as incurred. Development expenditures are capitalized only if development costs can be measured reliably, the product or process is technically and commercially feasible, future economic benefits are probable, and the Company intends to and has sufficient resources to complete development and to use or sell the asset. Other development expenditures are recognized in profit or loss as incurred. Subsequent expenditures are capitalized only when they increase the future economic benefits embodied in the specific asset to which they relate. All other expenditures, including expenditures on internally generated goodwill and brands, are recognized in profit or loss as incurred. Exploration for and evaluation of mineral resources POSCO HOLDINGS INC. is engaged in exploration projects for mineral resources through subsidiaries, associates and joint ventures or other contractual arrangements. Expenditures related to the development of mineral resources are recognized as exploration or development intangible assets. The nature of these intangible assets are as follows: (a) Exploration and evaluation assets Exploration and evaluation assets consist of expenditures for topographical studies, geophysical studies and trenching. These assets are reclassified as development assets when it is proved that the exploration has identified commercially viable mineral deposit. (b) Development assets When proved reserves are determined and development is sanctioned, development expenditures incurred are capitalized. These expenditures encompass the evaluation of oil fields, the construction of oil and gas wells, drilling for feasibility and other related activities. Upon completion of development and inception of extraction for commercial production of developed proved reserves, the development assets are reclassified as either property, plant and equipment or as intellectual property rights (mining rights) under intangible assets based on the nature of the capitalized expenditures. The respective property, plant and equipment and intellectual property (mining rights) are each depreciated and amortized based on proved reserves on a unit of production basis. Government grants Government grants are not recognized unless there is reasonable assurance that the Company will comply with the grant’s conditions and that the grant will be received. (a) Grants related to assets Government grants whose primary condition is that the Company purchase, construct or otherwise acquire long-term assets are deducted from the carrying amount of the assets and recognized in profit or loss on a systematic and rational basis over the life of the depreciable assets. (b) Grants related to income Government grants which are intended to compensate the Company for expenses incurred are deducted from the related expenses. Leases A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for considerations. 1) As a lessee At inception or reassessment of a contract that contains a lease component, the Company allocates the consideration in the contract to each lease and non-lease The Company recognizes a right-of-use right-of-use The right-of-use right-of-use right-of-use right-of-use The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined the Company’s incremental borrowing rate. Generally, the Company uses its incremental borrowing rate as the discount rate. The Company determines its incremental borrowing rate by obtaining interest rates from various external sources and makes certain adjustments to reflect the terms of the lease and type of the asset leased. Lease payments included in the measurement of the lease liability comprise the followings: • fixed payments • variable lease payments that depend on an index or a rate • amounts expected to be payable under a residual value guarantee; and • the exercise price under a purchase option that the Company’s is reasonably certain to exercise, lease payments in an optional renewal period if the Company is reasonably certain to exercise an extension option, and penalties for early termination of a lease unless the Company is reasonably certain not to terminate early. The lease liability is measured at amortized cost using the effective interest method. When the lease liability is remeasured in this way, a corresponding adjustment is made to the carrying amount of the right-of-use right-of-use • a revised in-substance • a change in future lease payments arising from a change in an index or rate, • a change in the Company’s estimate of the amount expected to be payable under a residual value guarantee, or • a change in the Company’s assessment of whether it will exercise a purchase, extension or termination option The Company presents right-of-use The Company has elected not to recognize right-of-use low-value 2) As a lessor At inception or the effective date of a modification that contains a lease component, the Company allocates the consideration in the contract to each lease component on the basis of their relative stand-alone prices. When the Company acts as a lessor, it determines at lease inception whether each lease is a finance lease or an operating lease. To classify each lease, the Company makes an overall assessment of whether the lease transfers substantially all of the risks and rewards incidental to ownership of the underlying asset. If this is the case, then the lease is a finance lease; if not, then it is an operating lease. As part of this assessment, the Company considers certain indicators such as whether the lease is for the major part of the economic life of the asset. The Company leases out its investment properties. The Company classifies these leases as operating leases. The Company provides subleases certain leased vessels and others . Impairment for financial assets The Company recognizes loss allowances for expected credit losses on: • financial assets measured at amortized cost; • debt instruments measured at fair value through other comprehensive income; and • lease receivables, contractual assets, loan commitments, and financial guarantee contracts If credit risk has increased significantly since the initial recognition, a loss allowance for lifetime expected credit loss is measured at the end of every reporting period. If credit risk has not increased significantly since the initial recognition, a loss allowance is measured based on 12-month If the financial instrument has low credit risk at the end of the reporting period, the Company may assume that the credit risk has not increased significantly since initial recognition. However, a loss allowance for lifetime expected credit losses is measured for contract assets or trade receivables that do not contain a significant financing component. (a) Judgments on credit risk When determining whether the credit risk of a financial asset has increased significantly since initial recognition and when estimating expected credit losses, the Company considers reasonable and supportable information that is relevant and available without undue cost or effort. This includes both quantitative and qualitative information and analysis, based on the Company’s historical experience and informed credit assessment including forward-looking information. The Company assumes that the credit risk on a financial asset has increased significantly if it is more than 30 days past due. The Company considers a financial asset to be in default when the borrower is unlikely to pay its credit obligations to the Company in full, without recourse by the Company to actions such as realizing security (if any is held). The Company considers a debt security to have low credit risk when its credit risk rating is equivalent to investment grade defined by reliable credit rating agencies. (b) Measurement of expected credit losses Lifetime expected credit losses are the expected credit losses that result from all possible default events over the expected life of a financial instrument. 12-month Expected credit losses are a probability-weighted estimate of credit losses. Credit losses are measured as the present value of all cash shortfalls such as the difference between the cash flows due to the entity in accordance with the contract and the cash flows that the Company expects to receive. Expected credit losses for financial assets measured at amortized cost are recognized in profit or loss. Loss allowances for financial assets measured at amortized cost are deducted from carrying amount of the assets. For debt instruments measured at fair value through other comprehensive income, the loss allowance is charged to profit or loss and is recognized in other comprehensive income. (c) Credit-impaired financial assets At each reporting date, the Company assesses whether financial assets measured at amortized cost and debt instrument measured at fair value through other comprehensive income are credit-impaired. A financial asset is ‘credit-impaired’ when one or more events that have a detrimental impact on the estimated future cash flows of the financial asset have occurred. Objective evidence that a financial asset or group of financial assets are impaired includes: • significant financial difficulty of the issuer or borrower • a breach of contract, such as a default or delinquency in interest or principal payments • the lender, for economic or legal reasons relating to the borrower’s financial difficulty, granting to the borrower a concession that the lender would not otherwise consider • becoming probable that the borrower will enter bankruptcy or other financial reorganization • the disappearance of an active market for that financial asset because of financial difficulties (d) Write-off The gross carrying amount of a financial asset is written off when the Company has no reasonable expectations of recovering a financial asset in entirety or a portion. The Company individually makes an assessment with respect to the timing and amount of write-off Impairment for non-financial The carrying amounts of the Company’s non-financial non-current Goodwill and intangible assets that have indefinite useful lives or that are not yet available for use, irrespective of whether there is any indication of impairment, are tested for impairment annually by comparing their recoverable amount to their carrying amount. Management estimates the recoverable amount of an individual asset. If it is not feasible to measure the individual recoverable amount of an asset, then management estimates the recoverable amount of cash-generating unit (“CGU”). A CGU 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 Company determined that individual operating entities are CGUs. The recoverable amount of an asset or CGU is the greater of its value-in-use value-in-use pre-tax An impairment loss is recognized if the carrying amount of an asset or a CGU exceeds its recoverable amount. Impairment losses are recognized in profit or loss. Goodwill acquired in a business combination is allocated to each CGU that is expected to benefit from the synergies arising from the goodwill acquired. Any impairment identified at the CGU level will first reduce the carrying amount of goodwill and then be used to reduce the carrying amount of the other assets in the CGU on a pro rata basis. Except for impairment losses in respect of goodwill which are never reversed, an impairment loss is reversed if there has been a change in the estimates used to determine the recoverable amount. An impairment loss is reversed only to the extent that the asset’s carrying amount does not exceed the carrying amount that would have been determined, net of depreciation or amortization, if no impairment

Financial risk management

Financial risk management	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Financial risk management	4. Financial risk management The Company has exposure to the following risks from its use of financial instruments: • credit risk • liquidity risk • market risk • capital risk This note presents information about the Company’s exposure to each of the above risks, the Company’s objectives, policies and processes for measuring and managing risk, and the Company’s management of capital. Further quantitative disclosures are included throughout these consolidated financial statements. (a) Financial risk management 1) Risk management framework The Board of Directors has overall responsibility for the establishment and oversight of the Company’s risk management framework. The Company’s risk management policies are established to identify and analyze the risks faced by the Company, to set appropriate risk limits and controls, and to monitor risks and adherence to limits. Risk management policies and systems are reviewed regularly to reflect changes in market conditions and the Company’s activities. The Company, through its training and management standards and procedures, aims to develop a disciplined and constructive control environment in which all employees understand their roles and obligations. 2) Credit risk Credit risk is the risk of financial loss to the Company if a customer or counterparty to a financial instrument fails to meet its contractual obligations, and arises principally from the Company’s receivables from customers and investment securities. In addition, credit risk arises from finance guarantees which are provided by the Company. The Company implements a credit risk management policy under which the Company only transacts business with counterparties that have a certain level of credit rate evaluated based on financial condition, historical experience, and other factors. The Company’s exposure to credit risk is influenced mainly by the individual characteristics of each customer. The default risk of a nation or an industry in which a customer operates its business does not have a significant influence on credit risk. The Company has established a credit policy under which each new customer is analyzed individually for creditworthiness. The Company establishes an allowance for impairment that represents its estimate of expected losses in respect of trade and other receivables. The main components of this allowance are a specific loss component that relates to individually significant exposures, and a collective loss component based on group of financial assets with similar risk characteristics. Credit risk also arises from transactions with financial institutions, and such transactions include transactions of cash and cash equivalents, various deposits, and financial instruments such as derivative contracts. The Company manages its exposure to this credit risk by only entering into transactions with banks that have high international credit ratings. The Company’s treasury department authorizes, manages, and overseas new transactions with financial institutions with whom the Company has no previous relationship. Furthermore, the Company limits its exposure to credit risk of financial guarantee contracts by strictly evaluating their necessity based on internal decision making processes, such as the approval of the Board of Directors. 3) Liquidity risk Liquidity risk is the risk that the Company will encounter difficulty in meeting the obligations associated with its financial liabilities that are settled by delivering cash or another financial asset. The Company’s approach to managing liquidity is to ensure, as far as possible, that it will always have sufficient liquidity to meet its liabilities when due, under both normal and stressed conditions, without incurring unacceptable losses or risking damage to the Company’s reputation. The Company’s cash flow from business, borrowing or financing is sufficient to meet the cash requirements for the Company’s strategic investments. Management believes that the Company is capable of raising funds by borrowing or financing if the Company is not able to generate cash flow requirements from its operations. The Company has committed borrowing facilities with various banks. 4) Market risk Market risk means that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices. The goal of market risk management is optimization of profit and controlling the exposure to market risk within acceptable limits. ① Currency risk The Company’s policy in respect of foreign currency risks is a natural hedge whereby foreign currency income is offset with foreign currency expenditures. The remaining net exposures after the natural hedge have been hedged using derivative contracts such as forward exchange contracts. In addition, the Company’s derivative transactions are limited to hedging actual foreign currency transactions. Based on this policy, the Company manages currency risk considering characteristics of respective segments. The entities in the steel segment reduce the foreign currency exposure by repayment of foreign currency borrowings at maturities related to investment in overseas when the entities have excessive foreign currency. In addition, the entities in Steel segment are using forward exchange contract for hedging foreign currency risks relating to foreign currency borrowings. The entities in the Construction segment of the Green infrastructure business have hedged foreign currency risks by using forward exchange contracts. Entities in the Trading segment of the Green infrastructure business have hedged foreign currency risks from net exposure of foreign currency receivables and payables using forward exchange contracts. ② Interest rate risk The Company manages the exposure to interest rate risk by adjusting borrowing structure between borrowings at fixed interest rates and variable interest rates. The Company monitors interest rate risks regularly in order to manage exposure to interest rate risk on borrowings at variable interest rate. ③ Interest rate benchmark reform risk A fundamental reform of major interest rate benchmark is being undertaken globally, including the replacement of some interbank offered rates (IBORs) with alternative nearly risk-free rates (referred to as “IBOR reform”). The publication of overnight and 1, 3, 6, and 12 months USD LIBOR will cease on June 30, 2023 and all other LIBOR publication has ceased on December 31, 2021. As a result of the reform, Korea Overnight Financing Repo Rate (KOFR) has been selected as the benchmark for the domestic CD rate, which has been published by Korea Securities since November 26, 2021. The details of when and how to KOFR are unclear. The Company plans to modify the clause in a contract or change the LIBOR rate to alternative benchmark rate for the financial instruments for which LIBOR settings are not yet ceased to be published. The market trend of CD rate related financial instruments is monitored, and if needed, the Company plans to modify the clause in the contract or change the interest rate from CD rate to KOFR. As of December 31, 2022, the financial instruments with USD LIBOR and CD rate as the benchmark rates are mostly associated with interest rate benchmark reform risk. The Company is exposed to a variety of risks: legal risk, process risk, and operational risk, due to the modification of contract. The Company monitors and manages its transition to alternative rates. The Company evaluates the extent to which contracts reference IBOR cash flows, whether such contracts will need to be amended as a result of IBOR reform and how to manage communications about IBOR reform with counterparties. As of December 31, 2022, USD LIBOR and CD floating rate loans, borrowings, and derivatives are exposed to interest rate benchmark reform risk. For some USD LIBOR floating rate financial instruments, the Company completed the modification of contracts by December 31, 2022. The termination of the publication of USD LIBOR date is expected to be June 30, 2023 but is subject to change. The Company plans to replace USD LIBOR with SOFR immediately after cessation. In July 2019, changes related to the methodologies to determine Euribor were made and Belgium Financial Services and Markets Authority granted the continuity of Euribor usage based on the European Union Benchmark Regulation. The Company did not make a transition from Eurbior to alternative benchmark rate, and expects to continue to use Euribor. The Company manages the alternative benchmark rate transition by modifying the clause such as IBOR related to uncompleted interest rate benchmark reform. The progress of transition is managed by comparing the financial instruments with transition not yet completed and financial instruments for which modification of clause completed. The Company deems the transition as not yet completed for financial instruments even if the clause in the contract has been modified. Financial instruments classified as transition not yet completed as of December 31, 2022 are as follows: (in millions of Won) USD LIBOR(* 3) Category(* 4) Transition not Modification Non-derivative Loans ￦ 3,802 — Non-derivative Borrowings 2,553,006 15,971 Derivatives(* 2) Interest rate swap 35,781 7,357 (*1) Based on nominal amount (*2) Based on related financial assets (*3) Excluded financial instruments with maturity date before June 30, 2023 (*4) Excluded financial instruments not obligated to use alternative benchmark rate as of December 31, 2022 Financial instruments using USD LIBOR that mature before June 30, 2023, and have not yet transitioned to alternative reference rates include borrowings of ￦ ￦ ￦ ④ Other market price risk Equity price risk arises from fluctuation of market price of listed equity securities. The Company’s management measures regularly the fair value of listed equity securities and the risk of market price fluctuations. All buy and sell decisions related to significant investments are managed and approved by the Company’s management. (b) Management of capital The fundamental goal of capital management is the maximization of shareholders’ value by means of the stable dividend policy and retirement of treasury shares. The capital structure of the Company consists of equity and net borrowings (borrowings less cash and cash equivalents). The Company’s strategy is to maintain a strong capital base so as to maintain investor, creditor and market confidence and to sustain future development of its businesses. Net borrowing-to-equity (in millions of Won) 2021 2022 Total borrowings ￦ 21,741,216 24,305,662 Less: Cash and cash equivalents 4,775,166 8,053,108 Net borrowings 16,966,050 16,252,554 Total equity 54,713,966 58,191,897 Net borrowings-to-equity 31.01 % 27.93 %

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
	Dec. 31, 2022
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Cash and Cash Equivalents	5. Cash and Cash Equivalents Cash and cash equivalents as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Cash ￦ 8,940 7,510 Demand deposits and checking accounts 2,310,431 2,826,227 Time deposits 947,904 2,638,838 Other cash equivalents 1,507,891 2,580,533 ￦ 4,775,166 8,053,108 As of December 31, 2022, cash and cash equivalents amounting to ￦

Trade Accounts and Notes Receiv

Trade Accounts and Notes Receivable	12 Months Ended
	Dec. 31, 2022
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Trade Accounts and Notes Receivable	6. Trade Accounts and Notes Receivable (a) Trade accounts and notes receivable as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Trade accounts and notes receivable ￦ 9,266,729 8,695,788 Finance lease receivables 126 — Unbilled Due from customers for contract work 1,027,039 1,340,146 Less: Allowance for doubtful accounts (314,955 ) (333,792 ) ￦ 9,978,939 9,702,142 Non-current Trade accounts and notes receivable ￦ 113,370 68,342 Less: Allowance for doubtful accounts (50,165 ) (44,309 ) ￦ 63,205 24,033 The Company sold trade accounts and notes receivable with recourse to financial institutions. These trade accounts and notes receivable have not been derecognized from the statement of financial position, because the Company retains substantially all of the risks and rewards associated with the transferred assets. The amounts received on transfer have been recognized as secured borrowings. As of December 31, 2021 and December 31, 2022, the carrying amounts of such secured borrowings are ￦ million and ￦ million, respectively, which are presented in the statements of financial position as the short-term borrowings. (b) Finance lease receivables are as follows: (in millions of Won) Customer Contents 2021 2022 Officers and employees Songdo apartment rental contract ￦ 75 — ZHAOHUUI PROSPERITY INT’L LTD Office Rental 51 — ￦ 126 — (c) As of December 31, 2021 and 2022, the Company’s gross investment and net investment in the leases are as follows: (in millions of Won) 2021 2022 Less than 1 year ￦ 126 — Undiscounted lease payments 126 — Present value of minimum lease payment ￦ 126 —

Other Receivables

Other Receivables	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Other Receivables	7. Other Receivables (a) The details of other receivables as of December 31, 2021 and 2022, are as follows: (in millions of Won) 2021 2022 Current Loans ￦ 331,692 278,346 Other accounts receivable 1,305,383 1,381,804 Accrued income 350,301 334,741 Deposits 130,011 131,468 Others 17,705 23,201 Lease receivables 63,568 46,764 Less: Allowance for doubtful accounts (94,051 ) (83,627 ) ￦ 2,104,609 2,112,697 Non-current Loans ￦ 884,990 1,082,139 Other accounts receivable 196,018 237,161 Accrued income 121,041 121,783 Deposits 390,971 292,722 Lease receivables 80,317 55,312 Less: Allowance for doubtful accounts (258,194 ) (268,786 ) ￦ 1,415,143 1,520,331 (b) The details of lease receivables are as follows: (in millions of Won) Customer Leased items 2021 2022 Pohang University of Science and Technology Lease contract ￦ — 7,738 Korea Business Angels Association Lease contract — 2,621 HEUNG-A HEUNG-A 6 Container Ships, 4 Tankers 119,636 88,573 KOGAS, ONGC Videsh Limited, GAIL(India) Limited, Myanmar Oil and Gas Enterprise Helicopter, Ship, Office, Jetty 24,249 3,144 ￦ 143,885 102,076 (c) As of December 31, 2021 and 2022, total and net lease investments in the leases are as follows: (in millions of Won) 2021 2022 Less than 1 year ￦ 63,782 48,127 1 year - 3 years 58,589 19,861 3 years - 5 years 5,388 5,371 Over 5 years 52,634 64,811 Undiscounted lease payments 180,393 138,170 Unrealized interest income (36,508 ) (36,094 ) Present value of minimum lease payment ￦ 143,885 102,076

Other Financial Assets

Other Financial Assets	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Other Financial Assets	8. Other Financial Assets Other financial assets as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Derivatives assets ￦ 66,558 223,771 Debt securities 157,895 121,122 Deposit instruments(* 1,2) 2,709,171 2,558,946 Short-term financial instruments(* 2) 10,514,093 8,006,081 ￦ 13,447,717 10,909,920 Non-current Derivatives assets ￦ 182,538 136,224 Equity securities(* 3) 1,466,061 1,462,088 Debt securities 3,968 78,901 Other securities(* 3) 430,998 632,469 Deposit instruments(* 2) 36,109 22,856 ￦ 2,119,674 2,332,538 (*1) As of December 31, 2021, ￦ (*2) As of December 31, 2021 and 2022, financial instruments amounting to ￦ ￦ (*3) As of December 31, 2021 and 2022, ￦ ￦

Inventories

Inventories	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Inventories	9. Inventories (a) Inventories as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Finished goods ￦ 2,583,191 2,508,370 Merchandise 1,326,736 1,237,203 Semi-finished goods 2,902,717 3,453,150 Raw materials 3,777,112 4,171,049 Fuel and materials 917,906 1,109,100 Construction inventories 1,597,719 1,131,776 Materials-in-transit 3,051,786 2,738,439 Others 101,133 100,873 16,258,300 16,449,960 Less: Allowance for inventories valuation (161,929 ) (316,557 ) ￦ 16,096,371 16,133,403 (b) The changes in allowance for inventories valuation for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Beginning ￦ 216,143 131,642 161,929 Loss on valuation of inventories 54,014 78,783 259,678 Utilization on sale of inventories (132,707 ) (49,528 ) (97,749 ) Others (5,808 ) 1,032 (7,301 ) Ending ￦ 131,642 161,929 316,557 During the year ended December 31, 2022, in addition to loss on valuation of inventories, ￦

Assets Held for Sale

Assets Held for Sale	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Assets Held for Sale	10. Assets Held for Sale Details of assets held for sale as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 The controlling Subsidiaries(*6) Total Subsidiaries(*3,6) Asset Cash and cash equivalents(*4) ￦ — 554 554 174 Account receivables and other receivables — 956 956 648 Investment stock in joint ventures(*5,7) — 13,044 13,044 — Property, plant and equipment 29,236 30,995 60,231 10,552 Intangible assets 553 2,977 3,530 — Others — 155 155 629 ￦ 29,789 48,681 78,470 12,003 Liability Others ￦ 185 4 189 5 (*1) During the year ended December 31, 2021, the Company sold the land in the Yanghak Neighborhood Park development reserve area that was classified as asset held for sale and the Company recognized ￦ (*2) During the year ended December 31, 2021, the Company decided to trade and exchange the emission rights and reclassified the emission rights to assets held for sale. After that, the Company recognized ￦ (*3) During the year ended December 31, 2021, the Company decided to dispose Synthetic Natural Gas (SNG) facility for which use was discontinued, and classified as asset held for sale for ￦ spin-off ￦ ￦ (*4) Cash and cash equivalents in the statement of cash flows include cash and cash equivalents that are classified as assets held for sale as of December 31, 2021 and December 31, 2022. (*5) During the year ended December 31, 2021, the Company decided to dispose of interests of POSCO(Guangdong) Automotive Steel Co, Ltd. which is classified investment in joint ventures as asset held for sale for ￦ ￦ (*6) During the year ended December 31, 2021, the Company decided to dispose of tangible and intangible assets of HUME COAL PTY LTD, a subsidiary, and classified as assets held for sale for ￦ ￦ (*7) During the year ended December 31, 2022, the Company decided to dispose of interests of CSP-Compania held-for-sale

Investments in Associates and J

Investments in Associates and Joint ventures	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Investments in Associates and Joint ventures	11. Investments in Associates and Joint ventures (a) Investments in associates and joint ventures as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Investments in associates ￦ 2,203,274 2,518,906 Investments in joint ventures 2,311,373 2,477,645 ￦ 4,514,647 4,996,551 (b) Details of investments in associates as of December 31, 2021 and 2022 are as follows: (in millions of Won) Number of shares Ownership (%) Acquisition cost Book value Company 2021 2022 [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund 178,691,901,565 27.23 ￦ — ￦ 176,136 — Samcheok Blue Power Co.,Ltd.(*1) 4,507,138 34.00 429,904 382,887 352,500 SNNC 18,130,000 49.00 90,650 171,332 182,414 QSONE Co.,Ltd. 200,000 50.00 84,395 86,058 86,378 Chun-cheon Energy Co., Ltd(*1) 17,308,143 49.10 86,541 9,571 9,513 Western Inland highway CO.,LTD. — — — 53,563 — Pocheon-Hwado Highway Corp.(*1) 6,981,975 27.64 34,910 28,813 27,165 CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 1,181,160 29.53 5,906 19,191 14,605 Daesung Steel(*2) 108,038 17.54 14,000 19,073 20,469 PCC Amberstone Private Equity Fund 1(*2) 8,130,098,340 8.80 7,882 9,251 9,326 Others (58 companies)(*1) 107,035 151,708 1,062,910 854,078 [Foreign] South-East Asia Gas Pipeline Company Ltd. 135,219,000 25.04 132,907 238,601 290,318 AES-VCM — 30.00 164,303 182,639 209,594 9404-5515 Quebec Inc. 284,463,243 25.85 328,509 135,738 331,261 FQM Australia Holdings Pty Ltd 186,000,030 30.00 109,568 91,052 98,103 Eureka Moly LLC — 20.00 240,123 13,633 14,574 AMCI (WA) PTY LTD 49 49.00 209,664 67,972 57,830 NCR LLC — 22.10 181,535 102,319 187,372 KOREA LNG LTD. 2,400 20.00 135,205 31,340 29,124 Nickel Mining Company SAS 3,234,698 49.00 157,585 48,249 90,636 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 565,680,000 40.00 104,432 22,769 98,933 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd — — — 19,099 — PT. Wampu Electric Power(*1) 8,708,400 20.00 10,054 15,851 16,659 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 50 25.00 4,723 9,140 8,590 Others (29 companies)(*1) 161,962 231,834 1,140,364 1,664,828 ￦ 2,203,274 2,518,906 (*1) As of December 31, 2021 and 2022, investments in associates amounting to ￦ ￦ (*2) As of December 31, 2022, it was classified as an associate even though the Company’s ownership percentage is less than 20% since the Company has significant influence over the investee when considering the structure of its Board of Directors and others. (c) Details of investments in joint ventures as of December 31, 2021 and 2022 are as follows: (in millions of Won) Number of shares Ownership (%) Acquisition cost Book value Company 2021 2022 [Domestic] POSCO MITSUBISHI CARBON TECHNOLOGY 11,568,000 60.00 ￦ 115,680 ￦ 169,838 161,465 Others (6 companies) 6,676 8,845 176,514 170,310 [Foreign] Roy Hill Holdings Pty Ltd(*1) 13,117,972 12.50 1,528,672 1,346,712 1,418,022 POSCO-NPS 325,050,000 50.00 364,609 393,793 412,002 KOBRASCO 2,010,719,185 50.00 32,950 68,296 103,044 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. — 25.00 61,961 107,650 111,219 DMSA/AMSA(*1) — 3.89 346,880 24,144 23,740 CSP - Compania Siderurgica do Pecem(*2) 1,578,377,432 20.00 676,060 52,257 — HBIS-POSCO Automotive Steel Co., Ltd — 50.00 235,251 110,769 216,138 Others (9 companies) 31,238 23,170 2,134,859 2,307,335 ￦ 2,311,373 2,477,645 (*1) As of December 31, 2021 and December 31, 2022, the investments in joint ventures are provided as collateral in relation to the joint ventures’ borrowings. (*2) During the year ended December 31, 2022, the Company decided to dispose of CSP—Compania Siderurgica do Pecem and recognized the impairment loss of ￦ (d) The movements of investments in associates and joint ventures for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Company December 31, Acquisition Dividends Share of Other December 31, [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund ￦ 175,939 — — 197 — 176,136 Samcheok Blue Power Co.,Ltd. 145,092 250,495 (405 ) (4,248 ) (8,047 ) 382,887 SNNC 160,332 — (18,243 ) 29,314 (71 ) 171,332 QSONE Co.,Ltd. 86,004 — (1,140 ) 1,194 — 86,058 Chun-cheon Energy Co., Ltd 23,913 — — (15,094 ) 752 9,571 Western Inland highway CO.,LTD. 45,070 4,031 — (1,981 ) 6,443 53,563 NEXTRAIN CO., Ltd. 47,364 — — (127 ) (47,237 ) — Pocheon-Hwado Highway Corp. 13,721 13,954 — (2,679 ) 3,817 28,813 CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 17,137 — — 2,054 — 19,191 Daesung Steel 16,990 — — 2,083 — 19,073 PCC Amberstone Private Equity Fund 1 9,230 — (674 ) 977 (282 ) 9,251 POSCO MITSUBISHI CARBON TECHNOLOGY 153,457 — — 16,243 138 169,838 Others (62 companies) 117,486 38,021 (7,159 ) 6,399 (41,036 ) 113,711 1,011,735 306,501 (27,621 ) 34,332 (85,523 ) 1,239,424 [Foreign] South-East Asia Gas Pipeline Company Ltd. 199,342 — (27,828 ) 48,159 18,928 238,601 AES-VCM 158,777 — (28,623 ) 35,959 16,526 182,639 9404-5515 Quebec Inc. 123,296 — (16,999 ) 18,071 11,370 135,738 FQM Australia Holdings Pty Ltd — 109,568 (17,997 ) (519 ) 91,052 Eureka Moly LLC 43,520 — — (32,607 ) 2,720 13,633 AMCI (WA) PTY LTD 71,732 — — (5,986 ) 2,226 67,972 NCR LLC 46,608 44,797 — (2,016 ) 12,930 102,319 KOREA LNG LTD. 42,229 — (9,178 ) 9,145 (10,856 ) 31,340 Nickel Mining Company SAS 40,890 — — 7,243 116 48,249 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 22,147 — — (1,838 ) 2,460 22,769 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 15,181 — — 1,752 2,166 19,099 PT. Wampu Electric Power 12,716 — — 1,389 1,746 15,851 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 7,110 — — 675 1,355 9,140 Roy Hill Holdings Pty Ltd 1,418,056 — (522,947 ) 392,887 58,716 1,346,712 POSCO-NPS 353,725 — (20,479 ) 28,729 31,818 393,793 KOBRASCO 54,400 — (39,059 ) 52,118 837 68,296 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 91,270 — — 6,291 10,089 107,650 DMSA/AMSA 31,104 — — 674 (7,634 ) 24,144 CSP - Compania Siderurgica do Pecem — 19,176 — 22,398 10,683 52,257 HBIS-POSCO Automotive Steel Co., Ltd 109,057 — 1,636 76 110,769 Others (38 companies) 132,411 12,184 (4,713 ) 48,555 4,763 193,200 2,864,514 294,782 (669,826 ) 615,237 170,516 3,275,223 ￦ 3,876,249 601,283 (697,447 ) 649,569 84,993 4,514,647 (*1) Other increase or decrease represents the changes in investments in associates and joint ventures due to disposals and change in capital adjustments effect from translations of financial statements of foreign investees and others during the year ended December 31, 2021. 2) For the year ended December 31, 2022 (in millions of Won) Company December 31, Acquisition Dividends Share of Other December 31, [Domestic] EQP POSCO Global NO1 Natural Resources ￦ 176,136 — (143,170 ) 145,822 (178,788 ) — Samcheok Blue Power Co.,Ltd. 382,887 — (9,992 ) (19,354 ) (1,041 ) 352,500 SNNC 171,332 — (5,348 ) 15,484 946 182,414 QSONE Co.,Ltd. 86,058 — (1,100 ) 1,420 — 86,378 Chun-cheon Energy Co., Ltd 9,571 — — (802 ) 744 9,513 Western Inland highway CO.,LTD. 53,563 — — (125 ) (53,438 ) — Pocheon-Hwado Highway Corp. 28,813 5,519 — (4,683 ) (2,484 ) 27,165 CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 19,191 — — (453 ) (4,133 ) 14,605 Daesung Steel 19,073 — — 1,396 — 20,469 PCC Amberstone Private Equity Fund 1 9,251 — (652 ) 1,104 (377 ) 9,326 POSCO MITSUBISHI CARBON TECHNOLOGY 169,838 — (24,000 ) 15,604 23 161,465 Others (64 companies) 113,711 45,563 (4,368 ) (3,931 ) 9,578 160,553 1,239,424 51,082 (188,630 ) 151,482 (228,970 ) 1,024,388 [Foreign] South-East Asia Gas Pipeline Company Ltd. 238,601 — (14,541 ) 50,143 16,115 290,318 AES-VCM 182,639 — (33,174 ) 45,382 14,747 209,594 9404-5515 Quebec Inc.(*2) 135,738 172,316 (31,949 ) 25,195 29,961 331,261 FQM Australia Holdings Pty Ltd 91,052 166 6,885 98,103 Eureka Moly LLC 13,633 — — — 941 14,574 AMCI (WA) PTY LTD 67,972 — — (3,964 ) (6,178 ) 57,830 NCR LLC 102,319 82,798 — (2,338 ) 4,593 187,372 KOREA LNG LTD. 31,340 — (21,161 ) 21,027 (2,082 ) 29,124 Nickel Mining Company SAS 48,249 — — 42,169 218 90,636 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 22,769 82,010 — (1,302 ) (4,544 ) 98,933 Zhongyue POSCO (Qinhuangdao) Tinplate 19,099 — — 213 (19,312 ) — PT. Wampu Electric Power 15,851 — (2,474 ) 823 2,459 16,659 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 9,140 — — (220 ) (330 ) 8,590 Roy Hill Holdings Pty Ltd 1,346,712 — (233,592 ) 273,084 31,818 1,418,022 POSCO-NPS 393,793 — (34,909 ) 25,884 27,234 412,002 KOBRASCO 68,296 — (21,287 ) 48,267 7,768 103,044 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 107,650 — — 6,527 (2,958 ) 111,219 DMSA/AMSA 24,144 — — (2,108 ) 1,704 23,740 CSP - Compania Siderurgica do Pecem 52,257 — — (90,395 ) 38,138 — HBIS-POSCO Automotive Steel Co., Ltd 110,769 126,195 (10,515 ) (10,311 ) 216,138 Others (37 companies) 193,200 29,975 (56,527 ) 96,740 (8,384 ) 255,004 3,275,223 493,294 (449,614 ) 524,778 128,482 3,972,163 ￦ 4,514,647 544,376 (638,244 ) 676,260 (100,488 ) 4,996,551 (*1) Other increase or decrease represents the changes in investments in associates and joint ventures due to disposals and change in capital adjustments effect from translations of financial statements of foreign investees and others during the year ended December 31, 2022. (*2) During the year ended December 31, 2022, it was additionally acquired due to the in-kind (*3) During the year ended December 31, 2022, dividends were declared prior to liquidation. The Company recognized full impairment loss of ￦ (e) Summarized financial information of associates and joint ventures as of and for the years ended December 31, 2021 and 2022 are as follows: 1) December 31, 2021 (in millions of Won) Company Assets Liabilities Equity Sales Net income [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund ￦ 400,339 574 399,765 — 5,411 Samcheok Blue Power Co.,Ltd. 2,301,783 1,620,752 681,031 — (6,226 ) SNNC 628,075 236,726 391,349 869,815 75,125 QSONE Co.,Ltd. 251,158 79,042 172,116 17,962 2,388 Chun-cheon Energy Co., Ltd 616,111 528,683 87,428 327,534 (5,424 ) Western Inland highway CO.,LTD. 305,166 42,052 263,114 — (2,137 ) Pocheon-Hwado Highway Corp. 217,888 95,005 122,883 — (929 ) CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 56,418 21,740 34,678 45,543 6,957 Daesung Steel 176,458 99,112 77,346 113,706 11,868 PCC Amberstone Private Equity Fund 1 105,169 — 105,169 11,910 11,110 POSCO MITSUBISHI CARBON TECHNOLOGY 470,330 185,622 284,708 172,441 28,699 [Foreign] South-East Asia Gas Pipeline Company Ltd. 1,604,624 651,751 952,873 439,974 192,322 AES-VCM 1,677,096 1,084,900 592,196 366,205 119,863 9404-5515 Quebec Inc. 1,317,335 3 1,317,332 — 173,763 FQM Australia Holdings Pty Ltd 1,348,138 1,021,630 326,508 243,611 (64,143 ) KOREA LNG LTD. 157,060 357 156,703 47,843 45,724 Nickel Mining Company SAS 475,751 307,570 168,181 328,570 31,688 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 129,618 72,965 56,653 28,488 (4,680 ) Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 92,850 31,260 61,590 174,511 5,193 PT. Wampu Electric Power 209,172 132,917 76,255 20,288 6,946 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 89,809 54,517 35,292 117,461 2,595 Roy Hill Holdings Pty Ltd 9,165,759 2,227,659 6,938,100 8,839,084 3,740,696 POSCO-NPS 787,383 — 787,383 — 52,451 KOBRASCO 194,022 57,430 136,592 165,224 104,507 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 727,958 324,222 403,736 2,044,978 25,165 DMSA/AMSA 3,631,856 2,068,847 1,563,009 749,634 636,113 CSP - Compania Siderurgica do Pecem 3,777,391 3,542,398 234,993 2,570,010 653,370 HBIS-POSCO Automotive Steel Co., Ltd 502,645 261,765 240,880 482,696 3,272 2) December 31, 2022 (in millions of Won) Company Assets Liabilities Equity Sales Net income [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund ￦ 9,471 480 8,991 — 425,366 Samcheok Blue Power Co.,Ltd. 3,515,861 2,885,218 630,643 — (8,447 ) SNNC 667,440 274,801 392,639 986,557 10,273 QSONE Co.,Ltd. 253,078 80,322 172,756 18,753 2,840 Chun-cheon Energy Co., Ltd 634,842 527,190 107,652 585,610 20,224 Pocheon-Hwado Highway Corp. 366,163 244,455 121,708 — (1,175 ) CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 24,926 5,769 19,157 17,189 (1,521 ) Daesung Steel 175,429 90,126 85,303 128,401 7,957 PCC Amberstone Private Equity Fund 1 106,024 — 106,024 13,877 12,546 POSCO MITSUBISHI CARBON TECHNOLOGY 447,604 175,229 272,375 252,246 27,628 [Foreign] South-East Asia Gas Pipeline Company Ltd. 1,705,670 546,262 1,159,408 447,696 200,246 AES-VCM 1,701,272 1,019,227 682,045 417,021 151,022 9404-5515 Quebec Inc. 1,397,061 — 1,397,061 — 182,708 FQM Australia Holdings Pty Ltd 1,458,318 1,131,628 326,690 493,202 (22,768 ) KOREA LNG LTD. 145,845 225 145,620 107,295 105,135 Nickel Mining Company SAS 539,318 279,291 260,027 379,922 91,008 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 305,740 57,932 247,808 45,771 (3,176 ) PT. Wampu Electric Power 209,815 129,520 80,295 21,760 4,115 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 79,116 45,677 33,439 136,663 (992 ) Roy Hill Holdings Pty Ltd 9,859,888 2,152,428 7,707,460 7,706,908 2,542,223 POSCO-NPS 823,800 — 823,800 — 49,341 KOBRASCO 262,724 57,242 205,482 147,843 96,534 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 663,509 245,499 418,010 1,881,946 26,106 DMSA/AMSA 3,022,659 2,412,377 610,282 1,368,730 (54,212 ) CSP - Compania Siderurgica do Pecem 4,422,752 3,678,956 743,796 3,101,132 500,082 HBIS-POSCO Automotive Steel Co., Ltd 712,633 270,668 441,965 473,494 (15,515 ) (f) Changes in accumulated losses of equity-accounted investees that were not recognized since the Company discontinues the use of the equity method for the year ended December 31, 2022 were as follows: (in millions of Won) Company Beginning Increase Ending New Songdo International City Development, LLC ￦ 199,483 (64,988 ) 134,495 UITrans LRT Co., Ltd. 40,103 3,769 43,872 Clean Iksan Co., Ltd. 797 (94 ) 703 HYOCHUN Co., Ltd. 3,837 559 4,396 KIRIN VIETNAM CO., Ltd. 100 3 103 INKOTECH, INC. 612 (72 ) 540 POSTO-Poggenamp Electrical Steel Pvt, Ltd. 301 256 557 Gunggi Green Energy 448 3,848 4,296 Link City PFV Inc. — 5,452 5,452 Noeul Green Energy — 1,886 1,886 POHANG E&E Co., LTD — 6,391 6,391 ￦ 245,681 (42,990 ) 202,691

Joint Operations

Joint Operations	12 Months Ended
	Dec. 31, 2022
Investments accounted for using equity method [abstract]
Joint Operations	12. Joint Operations Details of significant joint operations that the Company is participating in as a party to a joint arrangement as of December 31, 2022 are as follows: Joint operations Operation Ownership (%) Location Myanmar A-1/A-3 Mine development and gas production 51.00 Myanmar Offshore Midstream Gas transportation facility 51.00 Myanmar Greenhills Mine Mine development 20.00 Canada Mt. Thorley J/V Mine development 20.00 Australia POSMAC J/V Mine development 20.00 Australia Samcheok Thermal Power Plant EPC (Unit 1, 2) Construction work Construction 49.00 Korea Sinansan Line Double Track Train Construction 36.00 Korea Panama Metro Line 3 Project construction work Construction 20.00 Panama 2*600 MW Matarbari Ultra Super Critical Coal-Fired Power construction Construction 67.00 Bangladesh Yangsan Sasong 2nd Apartment Project (B5,6,7,9 Block) Construction work Construction 49.00 Korea Yongmun 1, 2, 3 District Housing Reconstruction Maintenance Project Construction 70.00 Korea Songdo B5 Block officetel Project Construction work Construction 80.00 Korea Particle Accelerator Facility Construction work Construction 55.00 Korea Anyang Jinheung Apartment Construction work Construction 45.00 Korea

Investment Property, Net

Investment Property, Net	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Investment Property, Net	13. Investment Property, Net (a) Investment property as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Acquisition Accumulated Book value Acquisition cost Accumulated Book value Land ￦ 349,026 (16,718 ) 332,308 325,241 (16,718 ) 308,523 Buildings 803,156 (218,607 ) 584,549 825,183 (231,678 ) 593,505 Structures 3,213 (2,460 ) 753 3,569 (2,213 ) 1,356 Right of use assets 196,344 (27,877 ) 168,467 206,166 (35,519 ) 170,647 ￦ 1,351,739 (265,662 ) 1,086,077 1,360,159 (286,128 ) 1,074,031 As of December 31, 2022, the fair value of investment property is ￦ (b) Changes in the carrying amount of investment property for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Disposals Depreciation Others(*1) Ending Land ￦ 279,397 83,497 (1,092 ) — (29,494 ) 332,308 Buildings 559,584 11,378 (2,264 ) (21,362 ) 37,213 584,549 Structures 1,199 — — (598 ) 152 753 Right of use assets 154,601 — — (4,364 ) 18,230 168,467 ￦ 994,781 94,875 (3,356 ) (26,324 ) 26,101 1,086,077 (*1) Includes reclassification resulting from changing purpose of use, adjustment of foreign currency translation difference and others. 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Disposals Depreciation Others(*1) Ending Land ￦ 332,308 — (2,921 ) — (20,864 ) 308,523 Buildings 584,549 1,661 (34 ) (28,336 ) 35,665 593,505 Structures 753 — — (797 ) 1,400 1,356 Right of use assets 168,467 — (21,151 ) (6,888 ) 30,219 170,647 ￦ 1,086,077 1,661 (24,106 ) (36,021 ) 46,420 1,074,031 (*1) Includes reclassification resulting from changing purpose of use, adjustment of foreign currency translation difference and others.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Property, Plant and Equipment, Net	14. Property, Plant and Equipment, Net (a) Property, plant and equipment as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Acquisition Accumulated Government Book value Acquisition Accumulated Government Book value Land ￦ 2,702,768 (53 ) — 2,702,715 3,103,218 (53 ) — 3,103,165 Buildings 9,802,539 (5,592,600 ) (5,489 ) 4,204,450 10,102,634 (5,922,285 ) (5,455 ) 4,174,894 Structures 6,683,546 (3,551,692 ) (59 ) 3,131,795 6,989,634 (3,826,658 ) (49 ) 3,162,927 Machinery and equipment 50,090,721 (33,663,244 ) (7,321 ) 16,420,156 52,198,121 (35,767,810 ) (7,481 ) 16,422,830 Vehicles 324,073 (277,437 ) (606 ) 46,030 337,932 (284,897 ) (904 ) 52,131 Tools 453,297 (375,212 ) (290 ) 77,795 497,173 (405,844 ) (368 ) 90,961 Furniture and fixtures 752,314 (585,881 ) (271 ) 166,162 796,405 (622,944 ) (116 ) 173,345 Lease assets 1,288,639 (420,893 ) — 867,746 1,299,779 (378,581 ) — 921,198 Bearer plants 185,234 (30,552 ) — 154,682 180,486 (38,766 ) — 141,720 Construction-in- progress 1,961,033 (125,620 ) (10,246 ) 1,825,167 3,621,269 (73,266 ) (9,978 ) 3,538,025 ￦ 74,244,164 (44,623,184 ) (24,282 ) 29,596,698 79,126,651 (47,321,104 ) (24,351 ) 31,781,196 (b) Changes in the carrying amount of property, plant and equipment for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Disposals Depreciation Impairment Others(*4) Ending Land ￦ 2,590,087 66,015 (117 ) — 5,670 41,060 2,702,715 Buildings 4,161,400 22,559 (4,001 ) (316,999 ) (32,863 ) 374,354 4,204,450 Structures 3,025,226 15,728 (15,727 ) (233,370 ) (4,900 ) 344,838 3,131,795 Machinery and equipment 16,857,307 206,564 (31,769 ) (2,283,704 ) (77,173 ) 1,748,931 16,420,156 Vehicles 37,156 14,896 (832 ) (15,242 ) (58 ) 10,110 46,030 Tools 60,301 21,802 (782 ) (30,864 ) (69 ) 27,407 77,795 Furniture and fixtures 127,459 28,178 (1,630 ) (47,135 ) (667 ) 59,957 166,162 Lease assets 773,700 224,667 (8,320 ) (172,443 ) (1,547 ) 51,689 867,746 Bearer plants 149,965 — (24,876 ) (9,264 ) — 38,857 154,682 Construction-in-progress 1,617,540 2,838,175 (10,789 ) — (190,556 ) (2,429,203 ) 1,825,167 ￦ 29,400,141 3,438,584 (98,843 ) (3,109,021 ) (302,163 ) 268,000 29,596,698 (*1) The Company estimated the recoverable amount of individual assets that it ceased their use due to the disposal plan and others at fair value less costs to sell based on sale price or scrap value and recognized an impairment loss since recoverable amounts are less than their carrying amounts for the year ended December 31, 2021. During the year ended December 31, 2021, the Company recognized impairment losses on damaged assets caused by the fire accident. (*2) The Company decided to stop the intended use for Synthetic Natural Gas (SNG) facility and sell the related assets. The Company estimated the recoverable amount based on expected sale price and recognized ￦ (*3) During the year ended December 31, 2021, evidence of impairment occurred due to changes in the quality of bituminous coal and changes in production plans at Narrabri Coal Mine where POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD, a subsidiary of the Company, participates as a non-operating ￦ (*4) Represents assets transferred from construction-in-progress 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Business Disposals Depreciation Impairment Others(*1) Ending Land ￦ 2,702,715 89,357 248,858 (1,247 ) — — 63,482 3,103,165 Buildings 4,204,450 127,837 37,741 (9,957 ) (317,350 ) (11,230 ) 143,403 4,174,894 Structures 3,131,795 82,130 38,535 (3,274 ) (253,996 ) (5,084 ) 172,821 3,162,927 Machinery and equipment 16,420,156 597,172 1,216 (33,511 ) (2,303,917 ) (184,706 ) 1,926,420 16,422,830 Vehicles 46,030 15,592 902 (1,017 ) (18,717 ) (123 ) 9,464 52,131 Tools 77,795 32,386 203 (187 ) (37,170 ) (351 ) 18,285 90,961 Furniture and fixtures 166,162 33,936 1,963 (1,175 ) (59,359 ) (1,990 ) 33,808 173,345 Lease assets 867,746 184,260 193,572 (22,029 ) (168,521 ) — (133,830 ) 921,198 Bearer plants 154,682 — — — (9,691 ) — (3,271 ) 141,720 Construction-in-progress 1,825,167 3,947,703 11,111 (383 ) — (9,699 ) (2,235,874 ) 3,538,025 ￦ 29,596,698 5,110,373 534,101 (72,780 ) (3,168,721 ) (213,183 ) (5,292 ) 31,781,196 (*1) Represents assets transferred from construction-in-progress (*2) Represents increases in property, plant and equipment due to business combination upon acquisition of Senex Energy Limited during the year ended December 31, 2022. (*3) The Company estimated the recoverable amounts (net fair value) , ￦ (c) Borrowing costs capitalized and the capitalized interest rate for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Weighted average expenditure ￦ 932,298 1,230,145 1,657,425 Borrowing costs capitalized 29,653 31,295 44,264 Capitalization rate (%) 3.14 ~ 3.18 2.25 ~ 3.16 2.39 ~ 3.85 (d) Property, plant and equipment and investment property pledged as collateral as of December 31, 2021 and 2022 are as follows: (in millions of Won) Book value Collateral right holder 2021 2022 Land Korean Development Bank ￦ 933,560 1,161,696 Buildings and structures Korean Development Bank 1,598,040 1,449,066 Machinery and equipment Korean Development Bank 2,286,656 2,123,621 ￦ 4,818,256 4,734,383 As of December 31, 2022, assets pledged as collateral related to the Company’s borrowings and others amounting to ￦ (e) Changes in the carrying amount of right of use assets presented as investment property and property, plant and equipment for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Depreciation Others Ending Land ￦ 371,719 14,161 (14,191 ) 19,757 391,446 Buildings and structures 171,760 30,912 (61,261 ) 2,443 143,854 Machinery and equipment 239,181 13,543 (41,721 ) 45,202 256,205 Vehicles 11,456 12,159 (8,657 ) (205 ) 14,753 Ships 106,555 120,217 (16,716 ) — 210,056 others 27,630 33,675 (34,261 ) (7,145 ) 19,899 ￦ 928,301 224,667 (176,807 ) 60,052 1,036,213 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Business Depreciation Others Ending Land ￦ 391,446 18,077 — (16,843 ) (24,513 ) 368,167 Buildings and structures 143,854 74,454 6,714 (50,397 ) (10,977 ) 163,648 Machinery and equipment 256,205 43,088 175,795 (56,333 ) (99,734 ) 319,021 Vehicles 14,753 12,467 98 (12,015 ) 3,349 18,652 Ships 210,056 23,793 — (18,355 ) 2 215,496 others 19,899 12,381 10,965 (21,467 ) (14,916 ) 6,862 ￦ 1,036,213 184,260 193,572 (175,410 ) (146,789 ) 1,091,846 (*1) Represents increases in right-in-use (f) The amount recognized in profit or loss related to leases for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Interest on lease liabilities ￦ 36,373 32,331 34,936 Expenses related to short-term leases 18,809 20,885 29,931 Expenses related to leases of low-value 14,375 18,577 17,877 ￦ 69,557 71,793 82,744

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets, Net	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Goodwill and Other Intangible Assets, Net	15. Goodwill and Other Intangible Assets, Net (a) Goodwill and other intangible assets as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Acquisition Accumulated Government Book value Acquisition Accumulated Government Book value Goodwill ￦ 1,648,119 (912,150 ) — 735,969 1,723,974 (1,281,487 ) — 442,487 Intellectual property rights 3,987,689 (1,761,881 ) — 2,225,808 4,944,973 (1,808,901 ) — 3,136,072 Membership 146,043 (3,673 ) — 142,370 135,905 (2,963 ) — 132,942 Development expense 656,712 (502,739 ) — 153,973 687,437 (571,266 ) — 116,171 Port facilities usage rights 685,540 (469,519 ) — 216,021 681,530 (484,319 ) — 197,211 Exploration and evaluation assets 280,092 (218,135 ) — 61,957 260,548 (159,557 ) — 100,991 Development assets — — — — 78,970 — — 78,970 Customer relationships 865,622 (579,902 ) — 285,720 865,691 (624,380 ) — 241,311 Other intangible assets 1,098,320 (753,790 ) (39 ) 344,491 1,175,409 (783,088 ) (25 ) 392,296 ￦ 9,368,137 (5,201,789 ) (39 ) 4,166,309 10,554,437 (5,715,961 ) (25 ) 4,838,451 (b) The changes in carrying amount of goodwill and other intangible assets for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Disposals Amortization Impairment Others(*3) Ending Goodwill ￦ 903,893 17,804 — — (189,167 ) 3,439 735,969 Intellectual property rights 2,170,738 281,544 (574 ) (271,931 ) (20,005 ) 66,036 2,225,808 Membership(*1) 138,703 7,457 (4,198 ) (137 ) 145 400 142,370 Development expense 227,111 11,301 — (72,294 ) (4,027 ) (8,118 ) 153,973 Port facilities usage rights 236,272 — — (20,581 ) — 330 216,021 Exploratation and evaluation assets 57,140 3,649 — — (374 ) 1,542 61,957 Customer relationships 330,247 — — (44,478 ) — (49 ) 285,720 Other intangible assets 385,328 68,253 (14,818 ) (34,679 ) (10,032 ) (49,561 ) 344,491 ￦ 4,449,432 390,008 (19,590 ) (444,100 ) (223,460 ) 14,019 4,166,309 (*1) Economic useful life of membership is indefinite. (*2) During the year ended December 31, 2021, the Company decided to sell a portion of paid-in ￦ (*3) Represents assets transferred from construction-in-progress (*4) During the year ended December 31, 2021, evidence of impairment has occurred due to changes in the quality of bituminous coal and changes in production plans at Narrabri Coal Mine where POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD, a subsidiary of the Company, participates as a non-operating ￦ (*5) During the year ended December 31, 2021, impairment loss of ￦ 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Business Disposals Amortization Impairment Others(*2) Ending Goodwill ￦ 735,969 — 66,206 — — (369,337 ) 9,649 442,487 Intellectual property rights 2,225,808 354,179 912,971 (582 ) (326,494 ) 379 (30,189 ) 3,136,072 Membership(*1) 142,370 9,230 — (2,082 ) (145 ) 854 (17,285 ) 132,942 Development expense 153,973 1,800 — (13 ) (67,446 ) (1,046 ) 28,903 116,171 Port facilities usage rights 216,021 — — — (14,800 ) — (4,010 ) 197,211 Exploratation and evaluation assets 61,957 24,583 21,266 — — — (6,815 ) 100,991 Development assets — 6,607 76,591 — — — (4,228 ) 78,970 Customer relationships 285,720 — — — (44,478 ) — 69 241,311 Other intangible assets 344,491 99,388 26,649 (145 ) (35,472 ) (232 ) (42,383 ) 392,296 ￦ 4,166,309 495,787 1,103,683 (2,822 ) (488,835 ) (369,382 ) (66,289 ) 4,838,451 (* 1 Economic useful life of membership is indefinite. (* 2 Represents assets transferred from construction-in-progress (* 3 Represents increases in intangible assets upon acquisition of Senex Energy Limited during the year ended December 31, 2022. (* 4 Represents increases in intangible assets upon acquisition of POSCO Silicon Solution Co., Ltd (formerly, TERA TECHNOS CO., Ltd.) during the year ended December 31, 2022. (c) For the purpose of impairment testing, goodwill is allocated to individual operating entities each of which is determined to be a CGU. The goodwill amounts as of December 31, 2021 and 2022 are as follows: (in millions of Won) Reportable segments Total number of 2021 2022 CGUs 2021 2022 Steel 7 10 POSCO VST CO., LTD. ￦ 36,955 36,955 POSCO Center Beijing(*2) 178 173 Others 12,542 13,741 Green Tranding Infrastructure(*3) 3 3 POSCO INTERNATIONAL Corporation(*1) 578,046 240,092 GRAIN TERMINAL HOLDING PTE. LTD. 21,516 — PT. Bio Inti Agrindo 7,468 7,270 E&C 2 2 POSCO ENGINEERING & CONSTRUCTION CO., LTD. 24,868 24,868 POSCO O&M Co., Ltd — 35,728 Energy, etc(*3) — 2 POSCO ENERGY CO., LTD. 26,471 26,471 Shinhan Green Energy Co Ltd 17,804 17,804 Green Materials(*3) — 3 POSCO CHEMICAL CO., LTD 8,800 8,800 Posco Silicon Solution Co., Ltd — 30,477 Zhangjiagang Pohang Refractions Co., Ltd. 108 108 Others(*3) 5 — Others 1,213 — 17 20 ￦ 735,969 442,487 (*1) The recoverable amount of POSCO INTERNATIONAL Corporation, a subsidiary in trading segment of the green infrastructure business, is determined based on its value in use. As of December 31, 2022, the value in use is estimated by applying an 8.97% (2021: 8.14%) post-tax 5-year ￦ The Company calculated the value in use by discounting the post-tax post-tax pre-tax pre-tax The value in use of the CGU is sensitive to assumptions such as discount rate, terminal growth and estimated sales ￦ ￦ (*2) During the year ended December 31, 2022, the entity was changed from the construction segment to the steel segment. (*3) As a result of the reorganization of business segments during the year ended December 31, 2022, the others segment from the previous year was subdivided into energy and others segment and green materials and energy segment. In addition, trading, construction and energy and other segments were presented under the green infrastructure business .

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2022
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Other Assets	16. Other Assets Other current assets and other non-current (in millions of Won) 2021 2022 Current Advance payments ￦ 564,196 782,439 Prepaid expenses 274,023 263,536 Firm commitment asset 11,323 9,674 Others 65,816 20,290 ￦ 915,358 1,075,939 Non-current Long-term advance payments ￦ 47,752 23,429 Long-term prepaid expenses 76,739 53,803 Others(*1) 74,116 90,141 ￦ 198,607 167,373 (*1) As of December 31, 2021 and 2022, the Company recognized tax assets amounting to ￦ ￦

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2022
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Borrowings	17. Borrowings (a) Short-term borrowings and current portion of long-term borrowings as of December 31, 2021 and 2022 are as follows: (in millions of Won) Bank Issuance date Maturity date Interest 2021 2022 Short-term borrowings Bank overdrafts JP Morgan and others March, 2022~ December, 2022 January, 2023~ December, 2023 1.20~7.38 ￦ 118,558 197,718 Short-term borrowings HSBC and others January, 2022~ December, 2022 January, 2023~ December, 2023 0.22~18.20 4,991,866 6,635,402 5,110,424 6,833,120 Current portion of long-term liabilities Current portion of long-term borrowings Export-Import Bank of Korea and others November, 2004~October, 2022 February, 2023~ December, 2023 0.75~16.50 992,154 2,302,592 Current portion of debentures Merrill lynch and others October, 2013~ September, 2021 January, 2023~ October, 2023 1.44~5.99 2,731,321 2,782,049 Less: Current portion of discount on debentures issued (3,832 ) (1,767 ) 3,719,643 5,082,874 ￦ 8,830,067 11,915,994 (b) Long-term borrowings, excluding current portion as of December 31, 2021 and 2022 are as follows: (in millions of Won) Bank Issuance date Maturity date Interest 2021 2022 Long-term borrowings Export-Import Bank of Korea and others September, 2001~ November, 2022 July, 2024~ March, 2040 0.19~8.50 ￦ 3,841,375 2,718,212 Less: Present value discount (12,530 ) (8,951 ) Bonds KB Securities co.,Ltd. and others July, 2015~ October, 2022 January, 2024~ May, 2032 0.50~4.60 7,671,755 8,351,006 Less: Discount on debentures issued (24,644 ) (28,893 ) Exchangeable bonds(*1) Foreign currency exchangeable bonds September, 2021 September, 2026 1,435,193 1,358,294 ￦ 12,911,149 12,389,668 (*1) The issuance conditions of the exchangeable bonds issued by the Company are as follows : Foreign currency exchangable bonds Type of bond Exchangable bonds Aggregate principal amount EUR 1,065,900,000 Interest rate - Coupon rate : - - Yield to Maturity : (0.78%) Maturity date September 1, 2026 Redemption 1) Redemption at Maturity : Outstanding bond principal, which is not repaid early or which call option is not exercised on, is repaid at maturity as a lump sum 2) Prepayment : The issuer has call option and the bondholders have put option Exchange rate 100% Exchange price (Won/share) 463,438(*) Underlying shares exchange Registered common shares (treasury shares) Exchange period From October 12, 2021 to August 22, 2026 Adjustments for exchange price Adjusting the exchange price according to the terms and conditions of the bond in the events of reason for adjusting the exchange price such as, bonus issue, share split, share consolidation, change of share type, issuannce of options or warranties to shareholders, share dividend, cash dividend, issuance of new shares under the market price. Put option by bondholders - 3 years(September 1, 2024) from the closing date - In the event of a change of control of the Company - Where the shares issued by the Company are delisted (or suspended for more than 30 consecutive trading days) Call option by the Issuer - Share price(based on closing price) is higher than 130% of exchange price for more than 20 trading days during 30 consecutive trading days in a row, after 3 years (September 1, 2024) from the closing day to 30 business days before the maturity of bonds. - When the outstanding balance of outstanding bonds is less than 10% of the total issuance(Clean-Up - Where additional reasons for tax burden arise due to the amendment of relevant laws and regulations, etc. (*) The exchange price has changed due to cash dividends during the year ended December 31, 2022. The Company has designated exchangeable bonds listed on the Singapore Stock Exchange as financial liabilities measured at fair value through profit or loss. The quoted transaction price is used in fair value measurement, and changes in fair value are recognized in profit or loss. (c) Assets pledged as collateral with regard to the borrowings as of December 31, 2022 are as follows: (in millions of Won) Bank Book value Pledged Property, plant and equipment and Investment property Korea Development Bank and others ￦ 4,666,691 6,044,317 Trade accounts and notes receivable Korea Development Bank and others 215,133 215,133 Financial instruments Woori Bank and others 16,923 16,924 ￦ 4,898,747 6,276,374

Other Payables

Other Payables	12 Months Ended
	Dec. 31, 2022
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Other Payables	18. Other Payables Other payables as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Accounts payable ￦ 1,034,823 1,423,402 Accrued expenses 835,226 981,609 Dividend payable 4,046 4,371 Lease liabilities 181,774 149,384 Withholdings 133,492 307,102 ￦ 2,189,361 2,865,868 Non-current Accounts payable ￦ 17,312 15,713 Accrued expenses 8,760 8,102 Lease liabilities 596,240 674,098 Long-term withholdings 56,697 92,489 ￦ 679,009 790,402

Other Financial Liabilities

Other Financial Liabilities	12 Months Ended
	Dec. 31, 2022
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Other Financial Liabilities	19. Other Financial Liabilities Other financial liabilities as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Derivatives liabilities ￦ 91,739 95,157 Financial guarantee liabilities 19,902 11,370 ￦ 111,641 106,527 Non-current Derivatives liabilities ￦ 18,300 79,984 Financial guarantee liabilities 5,696 7,068 ￦ 23,996 87,052

Provisions

Provisions	12 Months Ended
	Dec. 31, 2022
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Provisions	20. Provisions (a) Provisions as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Non-current Current Non-current Provision for bonus payments ￦ 93,502 45,031 136,275 33,157 Provision for construction warranties 14,519 222,141 35,702 170,272 Provision for legal contingencies and claims(*1) 24,441 69,050 46,823 59,518 Provision for the restoration(*2,3) 5,918 153,613 6,049 185,097 Others(*4,5,6) 261,604 99,257 291,139 131,874 ￦ 399,984 589,092 515,988 579,918 (*1) The Company recognized probable outflow of resources amounting to ￦ ￦ (*2) Due to contamination of lands near the Company’s magnesium smelting plant located in Gangneung province and others, the Company recognized present values of estimated costs for recovery amounting to ￦ (*3) Due to contamination of river water quality near Greenhills mine which POSCO CANADA LTD. owns, the Company recognized present values of estimated costs for recovery amounting to ￦ (*4) As of December 31, 2021 and 2022, POSCO ENERGY CO., LTD., and Korea Fuel Cell, recognized ￦ ￦ (*5) As of December 31, 2021 and 2022, the Company has recognized emission liabilities amounting to ￦ ￦ (*6) According to the Act on the promotion of the development, use and diffusion of new and reneable energy, POSCO Energy Co., Ltd. is obliged to supply a certain amount of power generated by new and renewable energy. In accordance with the Act, POSCO Energy Co., Ltd. estimated the cost required to fulfill its obligations, such as insufficient supply of power using new and renewable energy to be borne, and as of December 31, 2021 and 2022, the Company recognized ￦ ￦ (b) The following are the key assumptions concerning the future and other key sources of estimation uncertainties at the end of the reporting period. Key assumptions for the estimation Provision for bonus payments Estimations based on financial performance and working service rendered Provision for construction warranties Estimations based on historical warranty data Provision for legal contingencies and claims Estimations based on the degree of probability of an unfavorable outcome and the ability to make a sufficient reliable estimate of the amount of loss (c) Changes in provisions for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Increase Utilization Reversal Others(*1) Ending Provision for bonus payments ￦ 121,951 160,893 (138,003 ) (4,989 ) (1,319 ) 138,533 Provision for construction warranties 227,097 79,518 (67,196 ) (3,080 ) 321 236,660 Provision for legal contingencies and claims 87,450 66,395 (28,400 ) (32,731 ) 777 93,491 Provision for the restoration 139,745 29,456 (7,646 ) (11,129 ) 9,105 159,531 Others 389,999 291,284 (185,066 ) (119,633 ) (15,723 ) 360,861 ￦ 966,242 627,546 (426,311 ) (171,562 ) (6,839 ) 989,076 (*1) Includes adjustments of foreign currency translation differences and others. 2) For the year ended December 31, 2022 (in millions of Won) Beginning Increase Utilization Reversal Others(*1) Ending Provision for bonus payments ￦ 138,533 176,677 (137,092 ) (5,813 ) (2,873 ) 169,432 Provision for construction warranties 236,660 52,438 (73,853 ) (8,287 ) (984 ) 205,974 Provision for legal contingencies and claims 93,491 47,344 (33,175 ) (8,654 ) 7,335 106,341 Provision for the restoration 159,531 45,130 (43,168 ) (1,299 ) 30,952 191,146 Others 360,861 317,621 (203,985 ) (60,738 ) 9,254 423,013 ￦ 989,076 639,210 (491,273 ) (84,791 ) 43,684 1,095,906 (*1) Includes adjustments of foreign currency translation differences and others.

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2022
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Employee Benefits	21. Employee Benefits (a) Defined contribution plans The expenses related to post-employment benefit plans under defined contribution plans for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Expense related to post-employment benefit plans under defined contribution plans ￦ 50,694 54,527 62,467 (b) Defined benefit plans 1) The amounts recognized in relation to net defined benefit liabilities in the statements of financial position as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Present value of funded obligations ￦ 2,401,261 2,200,127 Fair value of plan assets(*1) (2,620,046 ) (2,703,639 ) Present value of non-funded 13,770 20,560 Net defined benefit liabilities ￦ (205,015 ) (482,952 ) (*1) As of December 31, 2021 and 2022, the Company recognized net defined ￦ ￦ 2) Changes in present value of defined benefit obligations for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Defined benefit obligations at the beginning of year ￦ 2,453,353 2,415,031 Current service costs 243,029 235,007 Interest costs 52,118 71,348 Remeasurements : (78,888 ) (192,339 ) - Loss (gain) from change in financial assumptions (159,154 ) (381,800 ) - Loss (gain) from change in demographic assumptions 1,512 (621 ) - Loss (gain) from change in others 78,754 190,082 Benefits paid (253,208 ) (300,353 ) Others (1,373 ) (8,007 ) Defined benefit obligations at the end of year ￦ 2,415,031 2,220,687 3) Changes in fair value of plan assets for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Fair value of plan assets at the beginning of year ￦ 2,397,717 2,620,046 Interest on plan assets 51,580 77,745 Remeasurement of plan assets (9,529 ) (57,335 ) Contributions to plan assets 417,486 346,773 Benefits paid (230,938 ) (287,312 ) Others (6,270 ) 3,722 Fair value of plan assets at the end of year ￦ 2,620,046 2,703,639 The Company expects to make an estimated contribution of ￦ 3 4) The fair value of plan assets as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Equity instruments ￦ 23,980 5,949 Debt instruments 811,498 758,250 Deposits 1,724,245 1,813,863 Others 60,323 125,577 ￦ 2,620,046 2,703,639 5) The amounts recognized in consolidated statement of comprehensive income for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Current service costs ￦ 245,047 243,029 235,007 Net interest costs(*1) 3,277 538 (6,397 ) ￦ 248,324 243,567 228,610 (*1) The actual return on plan assets amounted to ￦ ￦ ￦ The expenses by function were as follows: (in millions of Won) 2020 2021 2022 Cost of sales ￦ 177,223 166,734 156,576 Selling and administrative expenses 69,256 76,265 71,060 Others 1,845 568 974 ￦ 248,324 243,567 228,610 6) Accumulated actuarial gains (losses), net of tax recognized in other comprehensive income for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Beginning ￦ (589,796 ) (553,221 ) (502,066 ) Current actuarial gains (losses) 36,575 51,155 105,769 Ending ￦ (553,221 ) (502,066 ) (396,297 ) 7) The principal actuarial assumptions as of December 31, 2021 and 2022 are as follows: (%) 2021 2022 Discount rate 1.25 ~ 7.84 2.00 ~ 7.60 Expected future increase in salaries(*1) 1.50 ~ 11.50 1.50 ~ 12.20 (*1) The expected future increase in salaries is based on the average salary increase rate for the past 5 years. All assumptions are reviewed at the end of the reporting period. Additionally, the total estimated defined benefit obligation includes actuarial assumptions associated with the long-term characteristics of the defined benefit plan. 8) Reasonably possible changes at the reporting date to one of the relevant actuarial assumptions, holding the other assumptions constant, would have affected the defined benefit obligation by the amounts shown below: (in millions of Won) 1% Increase 1% Decrease Amount Percentage(%) Amount Percentage(%) Discount rate ￦ (129,873 ) (5.8 ) 146,641 6.6 Expected future increase in salaries 146,953 6.6 (132,348 ) (6.0 ) 9) As of December 31, 2022, the maturity of the expected benefit payments are as follows: (in millions of Won) Within 1 year 5 years - 10 years 10 years After Total Benefits to be paid ￦ 328,477 832,597 650,418 1,087,836 421,889 3,321,217 The maturity analysis of the defined benefit obligation was nominal amounts of defined benefit obligations using expected remaining period of service of employees.

Other Liabilities

Other Liabilities	12 Months Ended
	Dec. 31, 2022
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Other Liabilities	22. Other Liabilities Other liabilities as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Due to customers for contract work ￦ 813,207 756,316 Advances received 845,652 787,477 Unearned revenue 106,574 62,030 Withholdings 340,107 369,067 Firm commitment liability 11,852 7,566 Others(*1) 14,844 24,375 ￦ 2,132,236 2,006,831 Non-current Advances received ￦ 730,505 433,958 Unearned revenue 27,908 22,203 Others(*1) 28,583 129,673 ￦ 786,996 585,834 (*1) As of December 31, 2022, the Company recognized the liabilities assumed amounted to ￦

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Financial Instruments	23. Financial Instruments (a) Classification and fair value of financial instruments 1) The carrying amount and the fair values of financial assets and financial liabilities by fair value hierarchy as of December 31, 2021 and 2022 are as follows: ① (in millions of Won) Fair value Book value Level 1 Level 2 Level 3 Total Financial assets Fair value through profit or loss Derivative assets ￦ 241,541 — 241,541 — 241,541 Short-term financial instruments 10,514,093 — 10,514,093 — 10,514,093 Debt securities 10,717 — — 10,717 10,717 Other securities 430,998 37,343 1,022 392,633 430,998 Other receivables 2,000 — — 2,000 2,000 Derivative hedging instruments(*2) 7,555 — 7,555 — 7,555 Fair value through other comprehensive income Equity securities 1,466,061 1,250,497 — 215,564 1,466,061 Financial assets measured at amortized cost(*1) Cash and cash Equivalents 4,775,166 — — — — Trade accounts and notes receivable 9,051,708 — — — — Other receivables 2,761,566 — — — — Debt securities 151,146 — — — — Deposit instruments 2,745,280 — — — — ￦ 32,157,831 1,287,840 10,764,211 620,914 12,672,965 Financial liabilities Fair value through profit or loss Derivative liabilities ￦ 93,236 — 93,236 — 93,236 Borrowings 1,435,193 1,435,193 — — 1,435,193 Derivative hedging instruments(*2) 16,803 — 16,803 — 16,803 Financial liabilities measured at amortized cost(*1) Trade accounts and notes payable 5,468,869 — — — — Borrowings 20,306,023 — 20,393,246 — 20,393,246 Financial guarantee liabilities 25,598 — — — — Others 2,693,163 — — — — ￦ 30,038,885 1,435,193 20,503,285 — 21,938,478 (*1) Fair value of financial assets and liabilities measured at amortized cost except borrowings approximates their carrying amounts. (*2) The Company applies hedge accounting which uses forward contracts as hedging instrument in order to hedge the risk of changes in fair value of product prices regarding firm commitments or purchase commitments. Also, the Company applies cash flow hedge accounting which uses currency swap as hedging instrument in order to hedge the risk of interest rate and foreign exchange rate changes in foreign currency which influences cash flow from borrowings. ② (in millions of Won) Fair value Book value Level 1 Level 2 Level 3 Total Financial assets Fair value through profit or loss Derivative assets ￦ 350,149 — 350,149 — 350,149 Short-term financial instruments 8,006,081 — 8,006,081 — 8,006,081 Debt securities 75,876 — 69,926 5,950 75,876 Other securities 632,469 29,687 1,022 601,760 632,469 Other receivables 2,000 — — 2,000 2,000 Derivative hedging instruments(*2) 9,846 — 9,846 — 9,846 Fair value through other comprehensive income Equity securities 1,462,088 1,210,124 — 251,964 1,462,088 Financial assets measured at amortized cost(*1) Cash and cash Equivalents 8,053,108 — — — — Trade accounts and notes receivable 8,414,667 — — — — Other receivables 2,458,227 — — — — Debt securities 124,147 — — — — Deposit instruments 2,581,802 — — — — ￦ 32,170,460 1,239,811 8,437,024 861,674 10,538,509 Financial liabilities Fair value through profit or loss Derivative liabilities ￦ 157,036 — 157,036 — 157,036 Borrowings 1,358,294 1,358,294 — — 1,358,294 Derivative hedging instruments(*2) 18,105 — 18,105 — 18,105 Financial liabilities measured at amortized cost(*1) Trade accounts and notes payable 5,520,821 — — — — Borrowings 22,947,368 — 22,331,771 — 22,331,771 Financial guarantee liabilities 18,438 — — — — Others 2,789,195 — — — — ￦ 32,809,257 1,358,294 22,506,912 — 23,865,206 (*1) Fair value of financial assets and liabilities measured at amortized cost except borrowings approximates their carrying amounts. (*2) The Company applies hedge accounting which uses forward contracts as hedging instrument in order to hedge the risk of changes in fair value of product prices regarding firm commitments or purchase commitments. Also, the Company applies cash flow hedge accounting which uses currency swap as hedging instrument in order to hedge the risk of interest rate and foreign exchange rate changes in foreign currency which influences cash flow from borrowings. 2) Financial assets and financial liabilities classified as fair value hierarchy Level 2 Fair values of derivatives are measured using the derivatives instrument valuation models such as market approach method and discounted cash flow method. Inputs of the financial instrument valuation model include forward rate, interest rate and others. The fair value of derivatives may change depending on the type of derivatives and the nature of the underlying assets. 3) Financial assets and financial liabilities classified as fair value hierarchy Level 3 ① Value measurement method and significant but not observable inputs for the financial assets classified as fair value hierarchy Level 3 as of December 31, 2022 are as follows: (in millions of Won) Fair value Valuation technique Inputs Range of inputs Effect on fair value Financial assets at fair value ￦ 78,759 Discounted cash flows Growth rate 0% ~ 1% As growth rate increases, fair value increases Discount rate 4.97% ~ 14.89% As discount rate increases, fair value decreases 49,687 Proxy firm valuation method Price multiples 1.0096 As price multiples increases, fair value increases 733,228 Asset value approach — — — ② Sensitivity analysis of financial assets and financial liabilities classified as Level 3 of fair value hierarchy If other inputs remain constant as of December 31, 2022 and one of the significant but not observable input is changed, the effect on fair value measurement is as follows: (in millions of Won) Input variable Favorable Unfavorable Financial assets at fair value Fluctuation 0.5% of growth rate ￦ 237 (214 ) Fluctuation 0.5% of discount rate 20,437 (18,667 ) ③ Changes in fair value of financial assets and financial liabilities classified as Level 3 for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Beginning ￦ 731,735 620,914 Acquisition 138,473 182,217 Gain or l 5,292 24,613 Other comprehensive income 1,581 126,510 Disposal and others (256,167 ) (92,580 ) Ending ￦ 620,914 861,674 4) Finance income and costs by category of financial instrument for the years ended December 31, 2020, 2021 and 2022 were as follows: ① For the year ended December 31, 2020 Finance income and costs Other comprehensive (in millions of Won) Interest Gain and Gain and Gain and Others Total Financial assets at fair value through profit or loss ￦ 165,160 (15,883 ) — 9,979 329 159,585 — Derivative assets — 56,273 — 318,820 — 375,093 — Financial assets at fair value through other comprehensive income — — — — 38,019 38,019 (77,627 ) Financial assets measured at amortized cost 207,014 — (222,215 ) (15,779 ) (5,821 ) (36,801 ) — Derivative liabilities — (170,155 ) — (376,823 ) — (546,978 ) (331 ) Financial liabilities measured at amortized cost (638,797 ) — 450,984 — (16,010 ) (203,823 ) — ￦ (266,623 ) (129,765 ) 228,769 (63,803 ) 16,517 (214,905 ) (77,958 ) ② For the year ended December 31, 2021 Finance income and costs Other comprehensive (in millions of Won) Interest Gain and Gain and Gain and Others Total Financial assets at fair value through profit or loss ￦ 158,121 (12,093 ) — 12,119 26,170 184,317 — Derivative assets — 213,724 — 370,547 — 584,271 — Financial assets at fair value through other comprehensive income — — — — 48,281 48,281 214,888 Financial assets measured at amortized cost 134,122 — 651,435 (17,769 ) (7,149 ) 760,639 — Financial liabilities at fair value — 54,057 33,069 — (15,876 ) 71,250 — Derivative liabilities — 55,858 — (465,174 ) — (409,316 ) 309 Financial liabilities measured at amortized cost (439,826 ) — (846,202 ) (16 ) 11,537 (1,274,507 ) — ￦ (147,583 ) 311,546 (161,698 ) (100,293 ) 62,963 (35,065 ) 215,197 ③ For the year ended December 31, 2022 (in millions of Won) Finance income and costs Other comprehensive Interest Gain and Gain and Gain and Others Total Financial assets at fair value through profit or loss ￦ 20,421 (599,777 ) — 237,771 545 (341,040 ) — Derivative assets — 232,246 — 797,211 — 1,029,457 — Financial assets at fair value through other comprehensive income — — — — 38,837 38,837 (10,076 ) Financial assets measured at amortized cost 226,584 — 414,944 (64,244 ) (42,433 ) 534,851 — Financial liabilities at fair value — 85,790 (8,891 ) — — 76,899 — Derivative liabilities — (162,649 ) — (647,418 ) — (810,067 ) 1,023 Financial liabilities measured at amortized cost (607,458 ) — (893,377 ) — 1,443 (1,499,392 ) — ￦ (360,453 ) (444,390 ) (487,324 ) 323,320 (1,608 ) (970,455 ) (9,053 ) (b) Credit risk 1) Credit risk exposure The carrying amount of financial assets represents the Company’s maximum exposure to credit risk. The maximum exposure to credit risk as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Cash and cash equivalents ￦ 4,775,166 8,053,108 Derivative assets 249,096 359,995 Short-term financial instrument 10,514,093 8,006,082 Debt securities 161,863 200,023 Other securities 430,998 632,469 Other receivables 2,763,566 2,460,227 Trade accounts and notes receivable 9,051,708 9,754,813 Deposit instruments 2,745,280 2,581,802 ￦ 30,691,770 32,048,519 The Company provided financial guarantee for the repayment of loans of associates, joint ventures and third parties. As of December 31, 2021 and 2022, the maximum exposure to credit risk related to the financial guarantee amounted to ￦ million and ￦ million, respectively. 2) Impairment losses on financial assets The Company assesses expected credit losses by estimating the default rate based on the credit loss experience of prior periods and current overdue conditions and considers the credit default swap (CDS) premium to reflect changes in credit risk by sector. For credit-impaired assets and significant receivables where the credit risk is significantly increased, credit losses are individually assessed. ① Allowance for doubtful accounts as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Trade accounts and notes receivable ￦ 365,120 378,100 Other accounts receivable 171,273 178,264 Loans 172,162 165,051 Other assets 8,810 9,098 ￦ 717,365 730,513 ② Impairment losses on financial assets for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Bad debt expenses ￦ 40,153 24,791 Other bad debt expenses(*1) 19,704 14,968 Less: Recovery of allowance for other bad debt accounts (32,679 ) (5,144 ) ￦ 27,178 34,615 (*1) Other bad debt expenses are mainly related to loans and other accounts receivable. ③ The aging and allowance for doubtful accounts of trade accounts and notes receivable as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Trade accounts and Impairment Trade accounts and Impairment C ￦ 9,481,730 28,866 7,888,518 20,752 Over due less than 1 month 289,716 6,537 864,391 63,311 1 month - 3 months 132,509 2,821 388,151 10,337 3 months - 12 months 85,339 22,212 517,171 12,645 Over 12 months 417,970 304,684 446,045 271,055 ￦ 10,407,264 365,120 10,104,276 378,100 ④ The aging and allowance for doubtful accounts of other receivables as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Loans and other Impairment Loans and other Impairment C ￦ 2,239,492 99,661 2,049,908 53,070 Over due less than 1 month 33,276 373 141,718 2,987 1 month - 3 months 86,517 71 108,152 16,408 3 months - 12 months 289,810 12,227 24,912 930 Over 12 months 466,716 239,913 487,950 279,018 ￦ 3,115,811 352,245 2,812,640 352,413 ⑤ Changes in the allowance for doubtful accounts for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Beginning ￦ 898,273 753,693 717,365 Bad debt expenses(reversal) 829 40,153 24,791 Other bad debt expenses 53,105 (12,975 ) 9,824 Others(*1) (198,514 ) (63,506 ) (21,467 ) Ending ￦ 753,693 717,365 730,513 (*1) Others for the years ended December 31, 2020, 2021 and 2022, included decreases mainly due to write-off amounting to ￦ ￦ ￦ (c) Liquidity risk 1) Contractual maturities of non-derivative financial liabilities are as follows: (in millions of Won) Book value Contractual Within 1 year After Trade accounts and notes payable ￦ 5,520,822 5,520,822 5,520,807 15 — Borrowings 24,305,662 25,525,529 11,924,070 12,711,700 889,759 Financial guarantee liabilities(*1) 18,437 3,982,288 3,982,288 — — Lease liabilities 823,482 853,253 146,558 393,948 312,747 Other financial liabilities 2,671,022 2,671,287 2,554,837 116,450 — ￦ 33,339,425 38,553,179 24,128,560 13,222,113 1,202,506 (*1) For issued financial guarantee contracts, the maximum amount of the guarantee is allocated to the earliest period in which the guarantee could be called. 2) Contractual maturities of derivative financial liabilities are as follows: (in millions of Won) Within 1 year - 5 years After Total Currency forward ￦ 72,048 8,349 — 80,397 Currency swap 3,750 170 — 3,920 Others 19,359 71,465 — 90,824 ￦ 95,157 79,984 — 175,141 (d) Currency risk 1) The Company has exposure to the risk that the fair value or future cash flows of a financial instrument will fluctuate because of the changes in foreign exchange rates. The exposure to currency risk as of December 31, 2021 and 2022 is as follows: (in millions of Won) 2021 2022 Assets Liabilities Assets Liabilities USD ￦ 5,237,890 7,879,302 5,553,742 8,996,494 EUR 622,749 2,620,254 574,739 2,438,031 JPY 156,007 545,622 525,815 384,535 Others 849,744 467,053 1,614,928 807,876 2) As of December 31, 2021 and 2022, provided that functional currency against foreign currencies other than functional currency hypothetically strengthens or weakens by 10%, the changes in gain or loss for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 10% increase 10% decrease 10% increase 10% decrease USD ￦ (264,141 ) 264,141 (344,275 ) 344,275 EUR (199,751 ) 199,751 (186,329 ) 186,329 JPY (38,962 ) 38,962 14,128 (14,128 ) (e) Interest rate risk 1) The carrying amount of interest-bearing financial instruments as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Fixed rate Financial assets ￦ 20,677,076 21,394,764 Financial liabilities (16,092,096 ) (16,932,079 ) ￦ 4,584,980 4,462,685 Variable rate Financial liabilities ￦ (6,427,133 ) (8,197,066 ) 2) Sensitivity analysis on the cash flows of financial instruments with variable interest rate The Company’s interest rate risk mainly arises from borrowings with variable interest rate. As of December 31, 2021 and 2022, provided that other factors remain the same and the interest rate of borrowings with floating rates increases or decreases by 1%, the changes in interest expense for the years ended December 31, 2021 and 2022 would have been (in millions of Won) 2021 2022 1% increase 1% decrease 1% increase 1% decrease Variable rate financial instruments ￦ (64,271) 64,271 (81,971 ) 81,971

Share Capital and Capital Surpl

Share Capital and Capital Surplus	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Share Capital and Capital Surplus	24. Share Capital and Capital Surplus (a) Share capital as of December 31, 2021 and 2022 are as follows: (Share, in Won) 2021 2022 Authorized shares 200,000,000 200,000,000 Par value ￦ 5,000 5,000 Issued shares(*1) 87,186,835 84,571,230 Shared capital(*2) ￦ 482,403,125,000 482,403,125,000 (*1) As of December 31, 2022, total number of ADRs of 24,779,936 outstanding in overseas stock market are equivalent to 6,194,984 shares of common stock. (*2) As of December 31, 2022, the difference between the ending balance of common stock and the aggregate par value of issued common stock is ￦ (b) The changes in issued common stock for the years ended December 31, 2021 and 2022 were as follows: (share) 2021 2022 Issued Treasury Number of Issued Treasury Number of Beginning 87,186,835 (11,171,363 ) 76,015,472 87,186,835 (11,561,263 ) 75,625,572 Acquisition of treasury shares — (389,900 ) (389,900 ) — — — Disposal of treasury shares — — — — 223,605 223,605 Retirement of treasury shares — — — (2,615,605 ) 2,615,605 — Ending 87,186,835 (11,561,263 ) 75,625,572 84,571,230 (8,722,053 ) 75,849,177 (c) Capital surplus as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Share premium ￦ 463,825 463,825 Gain on disposal of treasury shares 796,623 806,114 Other capital surplus 136,968 140,349 ￦ 1,397,416 1,410,288

Hybrid Bonds

Hybrid Bonds	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Hybrid Bonds	25. Hybrid Bonds (a) The Company issued hybrid bonds, which are classified as equity in the consolidated financial statements. During the year ended December 31, 2022, the hybrid bonds were transferred to a new subsidiary (POSCO) which was established through a vertical spin-off. Accordingly, the ownership interests of the controlling company as of December 31, 2021 have been reclassified as non-controlling interests as of December 31, 2022. Hybrid bonds classified as equity as of December 31, 2021 and December 31, 2022 are as follows: (in millions of Won) Date of issue Date of Interest 2021 2022 Hybrid bond 1-2(*1) 2013-06-13 2043-06-13 4.60 ￦ 200,000 200,000 Issuance cost (616 ) (616 ) ￦ 199,384 199,384 (*1) Details of issuance of hybrid bonds as of December 31, 2022 are as follows: Hybrid bond 1-2 Maturity date 30 years (The issuer has a right to extend the maturity date) Interest rate Issue date ~ 2023-06-12 : 4.60% Reset every 10 years as follows; · After 10 years : return on government bond of the Republic of Korea (10 years) + 1.40% · After 10 years : additionally +0.25% according to Step-up clauses · After 30 years : additionally +0.75% Interest payments condition Quarterly (Optional deferral of interest payment is available to the Company) Others The Company can call the hybrid bond at year 10th anniversary of issuance and interest payment date afterwards The hybrid bond holder’s preference in the event of liquidation is senior to the common stockholders, but subordinate to other creditors. The interest accumulated but not paid on the hybrid bonds as of December 31, 2022 amounts to ￦ (b) POSCO ENERGY CO., LTD., a subsidiary of the Company, issued hybrid bonds, which are classified as non-controlling interests in the consolidated financial statements. Hybrid bonds as of December 31, 2021 and 2022 are as follows: (in millions of Won) Date of issue Date of maturity Interest rate (%) 2021 2022 Hybrid bond 1-4(*1) 2013-08-29 2043-08-29 5.21 ￦ 140,000 140,000 Issuance cost (429 ) (429 ) ￦ 139,571 139,571 (*1) Details of hybrid bonds of POSCO ENERGY CO., LTD. as of December 31, 2022 are as follows: Hybrid bond 1-4 Maturity date 30 years (The issuer has a right to extend the maturity date) Interest rate Issue date ~ 2023-08-29 : 5.21% Reset every 10 years as follows; · After 10 years : return on government bond (10 years) + 1.55% · After 10 years : additionally +0.25% according to Step-up clauses · After 30 years : additionally +0.75% Interest payments condition Quarterly (Optional deferral of interest payment is available to the Company) Others The issuer can call the hybrid bond at year 10th anniversary of issuance and interest payment date afterwards The hybrid bond holder’s preference in the event of liquidation is senior to the common stockholders, but subordinate to other creditors. The interest accumulated but not paid on the hybrid bonds as of December 31, 2022 amounts to ￦

Reserves

Reserves	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Reserves	26. Reserves (a) Reserves as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Accumulated comprehensive loss of investments in associates and joint ventures ￦ (532,833 ) (406,555 ) Changes in fair value of equity investments at fair value through other comprehensive income (153,359 ) (103,843 ) Foreign currency translation differences 7,762 60,487 Gain or losses on valuation of derivatives (455 ) (3 ) Others 11,900 5,924 ￦ (666,985 ) (443,990 ) (b) Changes in fair value of equity investments at fair value through other comprehensive income for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Beginning balance ￦ (359,283 ) (153,359 ) Changes in unrealized fair value of equity investments 201,144 37,068 Reclassification upon disposal 1,667 20,729 Others 3,113 (8,281 ) Ending balance ￦ (153,359 ) (103,843 )

Treasury Shares

Treasury Shares	12 Months Ended
	Dec. 31, 2022
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Treasury Shares	27. Treasury Shares Based on the Board of Directors’ resolution, POSCO HOLDINGS INC. holds treasury shares for business purposes including its share price stabilization. The changes in treasury shares for the years ended December 31, 2021 and 2022 were as follows: (shares, in millions of Won) 2021 2022 Number of shares Amount Number of shares Amount Beginning 11,171,363 ￦ 2,391,523 11,561,263 ￦ 2,508,294 Acquisition of treasury shares 389,900 116,771 — — Disposal of treasury shares — — (223,605 ) (48,513 ) Retirement of treasury shares — — (2,615,605 ) (567,473 ) Ending 11,561,263 ￦ 2,508,294 8,722,053 ￦ 1,892,308

Share-Based Payments

Share-Based Payments	12 Months Ended
	Dec. 31, 2022
Share Based Payments [Abstract]
Share-Based Payments	28. Share-Based Payments During the year ended December 31, 2022, pursuant to the board of directors’ resolution, the Company decided to implement the Stock Grant program, under which the Company will grant treasury shares to executives based on performance evaluation. As of December 31, 2022, detailed information of the Company’s Stock Grant program is as follows: (in Won, except share information) Grant Affiliated company of the Total quantity of treasury Fair value of common shares per Granted in 2022 2022-12-31 POSCO HOLDINGS INC. 15,888 ￦ 276,500 Subsidiaries 27,926 The fair value of the treasury shares expected to be granted to the Company’s executives as of the date of grant is accounted for as other administrative expenses.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Revenue	29. Revenue (a) Disaggregation of revenue 1) Details of revenue disaggregated by types of revenue and timing of revenue recognition for the years ended December 31, 2020, 2021 and 2022 were as follows: ① For the year ended December 31, 2020 (in millions of Won) Green Infrastructure Steel Construction Trading Energy Green Others Total Types of revenue Revenue from sales of goods ￦ 28,394,790 — 18,796,522 2,490 742,128 172,689 48,108,619 Revenue from services 462,489 45,359 388,222 1,801,862 1,498 8,020 2,707,450 Revenue from construction contract — 6,197,497 — — 27,949 — 6,225,446 Others 35,599 7,196 160,478 76,384 — 145,506 425,163 ￦ 28,892,878 6,250,052 19,345,222 1,880,736 771,575 326,215 57,466,678 Timing of revenue recognition Revenue recognized at a point in time ￦ 28,430,389 141,916 18,957,000 78,874 742,128 318,195 48,668,502 Revenue recognized over time 462,489 6,108,136 388,222 1,801,862 29,447 8,020 8,798,176 ￦ 28,892,878 6,250,052 19,345,222 1,880,736 771,575 326,215 57,466,678 ② For the year ended December 31, 2021 (in millions of Won) Green Infrastructure Steel Construction Trading Energy Green Others Total Types of revenue Revenue from sales of goods ￦ 40,305,393 — 24,233,531 7,751 1,210,874 219,425 65,976,974 Revenue from services 680,513 58,807 547,369 2,027,133 3,150 102,881 3,419,853 Revenue from construction contract — 6,014,050 — — 27,933 34 6,042,017 Others 107,499 2,365 284,708 26,393 — 149,392 570,357 ￦ 41,093,405 6,075,222 25,065,608 2,061,277 1,241,957 471,732 76,009,201 Timing of revenue recognition Revenue recognized at a point in time ￦ 40,412,892 491,313 24,518,239 34,144 1,210,874 368,817 67,036,279 Revenue recognized over time 680,513 5,583,909 547,369 2,027,133 31,083 102,915 8,972,922 ￦ 41,093,405 6,075,222 25,065,608 2,061,277 1,241,957 471,732 76,009,201 ③ For the year ended December 31, 2022 (in millions of Won) Green Infrastructure Steel Construction Trading Energy Green Others Total Types of revenue Revenue from sales of goods ￦ 43,508,308 — 24,824,117 84,168 2,418,796 — 70,835,389 Revenue from services 919,391 142,708 586,047 3,849,390 4,501 8,017 5,510,054 Revenue from construction contract — 7,769,863 — — 28,488 — 7,798,351 Others 119,267 8,537 545,294 65,401 — 121,323 859,822 ￦ 44,546,966 7,921,108 25,955,458 3,998,959 2,451,785 129,340 85,003,616 Timing of revenue recognition Revenue recognized at a point in time ￦ 43,627,575 837,363 25,369,411 149,569 2,418,796 121,323 72,524,037 Revenue recognized over time 919,391 7,083,745 586,047 3,849,390 32,989 8,017 12,479,579 ￦ 44,546,966 7,921,108 25,955,458 3,998,959 2,451,785 129,340 85,003,616 (b) Details of contract assets and liabilities from contracts with customers as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Receivables Account receivables ￦ 9,051,708 8,414,667 Contract assets Due from customers for contract work 990,436 1,311,508 Contract liabilities Advance received 1,583,732 1,233,424 Due to customers for contract work 813,207 756,316 Unearned revenue 133,765 84,195

Revenue - Contract Balances

Revenue - Contract Balances	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Revenue - Contract Balances	30. Revenue – Contract Balances (a) Details of outstanding contracts as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Accumulated cost ￦ 30,691,333 27,940,760 Accumulated contract profit 2,462,231 1,759,843 Accumulated contract loss (1,244,787 ) (885,148 ) Accumulated contract revenue 31,908,777 28,815,455 (b) Details of due from customers for contract work and due to customers for contract work as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Unbilled due from customers for contract work ￦ 1,027,039 1,340,146 Due to customers for contract work (813,207 ) (756,316 ) ￦ 213,832 583,830 (c) Due to the factors causing the cost variation for the years ended December 31, 2021 and 2022, the estimated total contract costs have changed. Details of changes in estimated total contract costs and the impact on profit before income taxes for the years ended December 31, 2021, 2022 and future periods are as follows: (in millions of Won) 2021 2022 Changes in total contract revenues ￦ 862,660 1,222,558 Changes in estimated total contract costs 659,613 1,622,429 Changes in profit before income taxes of construction contract : - Current period 116,340 (165,623 ) - Future periods 86,707 (234,248 ) The effect on the current and future profit is estimated based on the circumstances that have occurred from the commencement date of the contract to the end of reporting period. The estimation is evaluated for the total contract costs and expected total contract revenue as of the end of the reporting period. Also, it may change during future periods. (d) Uncertainty of estimates 1) Total contract revenues Total contract revenues are measured based on contractual amount initially agreed. However, the contract revenues can increase due to additional contract work, claims and incentive payments, or decrease due to penalty when the completion of contract is delayed due to the Company’s fault. Therefore, the measurement of contract revenues is affected by the uncertainty of the occurrence of future events. 2) Total contract costs Contract revenues are recognized based on the percentage of completion, which is measured on the basis of the gross cost amount incurred to date. Total contract costs are estimated based on estimates of future material costs, labor costs, outsourcing cost and others. There is uncertainty in estimates on future contract costs due to various internal and external factors such as fluctuation of market, the risk of business partner and the experience of project performance and others. The significant assumptions including uncertainty of the estimate of total contract costs are as follows: Method of significant assumption Material cost Assumption based on recent purchasing price and quoted market price Labor cost Assumption based on standard monthly and daily labor cost Outsourcing cost Assumption based on the past experience rate of similar project and market price Management reviews the assumptions used in estimated contract costs at each reporting period end and adjusts them, if necessary. (e) As of December 31, 2022, revenue expected to be recognized in the future in relation to performance obligations that have not been fulfilled (or partially fulfilled) is as follows: (in millions of Won) 2023 2024 2025 After 2026 Total Expected Revenue ￦ 7,529,798 5,999,477 2,350,137 988,206 16,867,618

Selling and Administrative Expe

Selling and Administrative Expenses	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Selling and Administrative Expenses	31. Selling and Administrative Expenses (a) Other administrative expenses Other administrative expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Wages and salaries ￦ 828,667 941,824 1,075,873 Expenses related to post-employment benefits 83,037 142,606 84,582 Other employee benefits 187,075 207,074 230,909 Travel 17,513 18,916 39,661 Depreciation 146,483 144,037 148,639 Amortization 115,254 87,232 90,069 Communication 10,390 9,898 10,890 Electricity 7,968 7,398 9,563 Taxes and public dues 59,274 85,808 95,976 Rental 34,966 28,682 36,732 Repairs 8,952 12,604 17,343 Entertainment 8,328 10,186 13,741 Advertising 71,743 89,218 103,551 Research & development 116,273 123,092 179,714 Service fees 156,530 187,271 225,072 Vehicles maintenance 4,880 5,336 7,102 Industry association fee 9,586 9,691 11,624 Conference 11,576 14,479 20,259 Increase (decrease) to provisions 12,285 8,936 (909 ) Others 48,822 75,521 79,575 ￦ 1,939,602 2,209,809 2,479,966 (b) Selling expenses Selling expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Freight and custody ￦ 180,503 192,973 77,427 Operating expenses for distribution center 6,977 7,382 2,507 Sales commissions 86,851 65,404 75,012 Sales advertising 1,284 3,620 5,782 Sales promotion 7,086 6,264 19,388 Sample 1,650 2,164 2,052 Sales insurance premium 30,364 41,069 39,018 Contract cost 46,247 61,450 57,661 Others 15,978 12,749 15,635 ￦ 376,940 393,075 294,482

Research and Development Expend

Research and Development Expenditures Recognized as Expenses	12 Months Ended
	Dec. 31, 2022
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Research and Development Expenditures Recognized as Expenses	32. Research and Development Expenditures Recognized as Expenses Research and development expenditures recognized as expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Administrative expenses ￦ 116,273 123,092 179,714 Cost of sales 351,861 345,457 356,560 ￦ 468,134 468,549 536,274

Finance Income and Costs

Finance Income and Costs	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Finance Income and Costs	33. Finance Income and Costs Details of finance income and costs for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Finance income Interest income(*1) ￦ 372,174 292,243 247,005 Dividend income 38,348 74,451 39,383 Gain on foreign currency transactions 1,147,692 1,079,939 2,284,126 Gain on foreign currency translations 574,463 298,452 703,627 Gain on derivatives transactions 352,005 402,171 840,265 Gain on valuations of derivatives 115,642 370,780 262,723 Gain on disposals of financial assets at fair value through profit of loss 15,550 20,070 256,016 Gain on valuations of financial assets at fair value through profit or loss 51,581 101,717 98,359 Gain on valuations of financial liabilities at fair value through profit or loss — 54,057 85,790 Others 10,044 36,230 16,717 ￦ 2,677,499 2,730,110 4,834,011 Finance costs Interest expenses ￦ (638,797 ) (439,826 ) (607,458 ) Loss on foreign currency transactions (1,067,907 ) (985,179 ) (2,505,862 ) Loss on foreign currency translations (425,479 ) (554,910 ) (969,215 ) Loss on derivatives transactions (410,008 ) (496,798 ) (690,471 ) Loss on valuations of derivatives (229,524 ) (101,198 ) (193,127 ) Loss on disposals of trade accounts and notes receivable (15,816 ) (17,769 ) (64,244 ) Loss on disposals of financial assets at fair value through profit or loss (5,571 ) (7,951 ) (18,245 ) Loss on valuations of financial assets at fair value through profit or loss (67,464 ) (113,810 ) (698,136 ) Others (31,836 ) (47,734 ) (57,708 ) ￦ (2,892,402 ) (2,765,175 ) (5,804,466 ) (*1) Interest income calculated using the effective interest method for the years ended December 31, 2020, 2021 and 2022 were ￦ ￦ million and ￦

Other Operating Income and Expe

Other Operating Income and Expenses	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Other Operating Income and Expenses	34. Other Operating Income and Expenses Details of other operating income and expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Other operating income Gain on disposals of assets held for sale ￦ 841 60,208 55,262 Gain on disposals of investment in subsidiaries, associates and joint ventures 88,836 85,981 13,904 Gain on disposals of property, plant and equipment 15,548 12,016 18,502 Gain on disposals of intangible assets 815 273 291 Gain on valuation of firm commitment 107,511 169,485 181,645 Gain on disposals of emission rights 24,851 567 5,181 Reversal of other provisions 5,154 33,887 5,245 Compensation for insured losses(*1) 25,253 38,115 237,565 Miscellaneous Income (*2) 111,701 157,703 64,235 Others 21,826 19,762 10,187 ￦ 402,336 577,997 592,017 Other operating expenses Impairment loss on assets held for sale ￦ (5,030 ) — — Loss on disposals of investments in subsidiaries, associates and joint ventures (14,632 ) (12,882 ) (12,400 ) Loss on disposals of property, plant and equipment (142,126 ) (95,720 ) (111,082 ) Impairment loss on property, plant and equipment (27,040 ) (311,520 ) (213,183 ) Impairment loss on intangible assets (197,776 ) (224,328 ) (370,663 ) Loss on valuation of firm commitment (93,098 ) (111,542 ) (156,183 ) Idle tangible asset expenses (19,276 ) (23,843 ) (18,184 ) Increase to provisions (30,536 ) (37,962 ) (88,857 ) Donations (45,652 ) (101,258 ) (80,558 ) Miscellaneous losses (63,525 ) (69,972 ) (63,812 ) Others (6,883 ) (38,465 ) (8,763 ) ￦ (645,574 ) (1,027,492 ) (1,123,685 ) (*1) During the year ended December 31, 2022, POSCO, a subsidiary, received insurance payments of ￦ (*2) During the year ended December 31, 2021, the Company recognized ￦

Expenses by Nature

Expenses by Nature	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Expenses by Nature	35. Expenses by Nature Expenses that are recorded by nature as cost of sales, selling and administrative expenses, impairment loss on other receivables and other operating expenses in the statements of comprehensive income for the years ended December 31, 2020, 2021 and 2022 were as follows (excluding finance costs and income tax expense): (in millions of Won) 2020 2021 2022 Raw material used, changes in inventories and others ￦ 34,555,624 44,466,766 54,670,367 Employee benefits(*2) 3,624,953 4,023,167 4,330,946 Outsourced processing cost 7,808,343 7,690,334 8,641,448 Electricity 656,121 744,207 936,360 Depreciation(*1) 3,156,181 3,135,345 3,204,744 Amortization 465,558 444,100 488,835 Freight and custody 1,428,012 1,580,200 3,077,044 Sales commissions 86,851 65,404 75,012 Loss on disposal of property, plant and equipment 142,126 95,720 111,082 Impairment loss on property, plant and equipment 27,040 311,520 213,183 Impairment loss on goodwill and intangible assets 197,776 224,328 370,663 Donations 45,652 101,258 80,558 Other 3,638,393 4,962,224 5,058,849 ￦ 55,832,630 67,844,573 81,259,091 (*1) Includes depreciation of investment property. (*2) The details of employee benefits expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Wages and salaries ￦ 3,316,364 3,684,894 4,024,805 Expenses related to post-employment benefits 308,589 338,273 306,141 ￦ 3,624,953 4,023,167 4,330,946

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Income Taxes	36. Income Taxes (a) Income tax expense for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Current income taxes(*1) ￦ 692,870 2,470,416 932,085 Deferred income tax due to temporary differences (481,303 ) (153,919 ) (407,958 ) Items recorded directly in equity 12,705 (102,670 ) (62,593 ) Income tax expense ￦ 224,272 2,213,827 461,534 (*1) Refund (additional payment) of income taxes when filing a final corporation tax return is credited (charged) directly to current income taxes. (b) The income taxes credited (charged) directly to equity for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Net changes in fair value of equity investments at fair value through other comprehensive income ￦ 26,850 (83,532 ) (37,431 ) Others (14,145 ) (19,138 ) (25,162 ) ￦ 12,705 (102,670 ) (62,593 ) (c) The following table reconciles the calculated income tax expense based on POSCO HOLDINGS INC’s statutory rate (27.5%) to the actual amount of taxes recorded by the Company for the years ended December 31, 2020, 2021 and 2022. (in millions of Won) 2020 2021 2022 Profit before income tax expense ￦ 1,972,764 9,389,809 4,047,491 Income tax expense computed at statutory rate 533,875 2,572,702 1,101,240 Adjustments: Tax credits (90,093 ) (313,205 ) (133,727 ) Additional income tax expense for prior years (Refund of tax for prior years) (14,362 ) (42,667 ) 22,929 Investment in subsidiaries, associates and joint ventures(*2) 147,874 (111,938 ) (413,349 ) Tax effects due to permanent differences 2,591 17,811 19,350 Effect of tax rate change — — (180,533 ) Others(*1) (355,613 ) 91,124 45,624 (309,603 ) (358,875 ) (639,706 ) Income tax expense ￦ 224,272 2,213,827 461,534 Effective tax rate (%) 11.37 % 23.58 % 11.40 % (*1) Due to changes in estimation on deductibility of temporary difference related to Synthetic Natural Gas (SNG) facility and Business Combination of Off-gas Power Station Business Sector, ￦ . (*2) During the year ended December 31, 2022, POSCO HOLDINGS INC. sold certain of its subsidiaries and associates to POSCO, a subsidiary of POSCO HOLDINGS INC., and classified CSP-Compania Siderurgica do Pecem, an investment in joint venture as assets held for sale. This amount includes recognition of deferred tax assets of million in connection with these transactions . (d) The movements in deferred tax assets (liabilities) for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Beginning Inc. (Dec.) Ending Beginning Inc. (Dec.) Ending Deferred income tax due to temporary differences Allowance for doubtful accounts ￦ 147,224 (3,866 ) 143,358 143,358 (12,857 ) 130,501 PP&E - Depreciation 32,236 (1,328 ) 30,908 30,908 (6,981 ) 23,927 Share of profit or loss of equity-accounted investees 219,431 5,135 224,566 224,566 45,072 269,638 Allowance for inventories valuation 11,542 11,441 22,983 22,983 24,582 47,565 PP&E - Revaluation (1,733,999 ) 130,616 (1,603,383 ) (1,603,383 ) 1,455,648 (147,735 ) Prepaid expenses 19,831 (301 ) 19,530 19,530 (2,607 ) 16,923 PP&E - Impairment loss 383,503 70,166 453,669 453,669 (436,570 ) 17,099 Gain or loss on foreign currency translation (51,645 ) 50,540 (1,105 ) (1,105 ) (12,601 ) (13,706 ) Defined benefit liabilities (121,820 ) (26,521 ) (148,341 ) (148,341 ) 107,924 (40,417 ) Provision for construction losses 17,605 (7,415 ) 10,190 10,190 7,759 17,949 Provision for construction warranty 63,515 10,845 74,360 74,360 (4,089 ) 70,271 Accrued income (41,176 ) (9,276 ) (50,452 ) (50,452 ) 10,690 (39,762 ) Provision for accelerated depreciation (2,915 ) (5,595 ) (8,510 ) (8,510 ) (2,728,164 ) (2,736,674 ) Spin-off — — — — 2,111,815 2,111,815 Impairment loss on AFS 108,598 9,551 118,149 118,149 (23,607 ) 94,542 Difference in acquisition costs of treasury shares 69,408 — 69,408 69,408 (25,516 ) 43,892 Others 392,640 (83,022 ) 309,618 309,618 99,186 408,804 (486,022 ) 150,970 (335,052 ) (335,052 ) 609,684 274,632 Deferred income taxes recognized directly to equity Net changes in fair value of equity investments at fair value through other comprehensive income 156,991 (83,532 ) 73,459 73,459 (37,431 ) 36,028 Others 153,876 (19,139 ) 134,737 134,737 (141,788 ) (7,051 ) 310,867 (102,671 ) 208,196 208,196 (179,219 ) 28,977 Deferred tax from tax credit Tax credit carry-forward and others 72,406 458 72,864 72,864 (1,500 ) 71,364 Investments in subsidiaries, associates and joint ventures Investments in subsidiaries, associates and joint ventures 139,867 105,162 245,029 245,029 (21,008 ) 224,021 ￦ 37,118 153,919 191,037 191,037 407,957 598,994 (e) Deferred tax assets and liabilities as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Assets Liabilities Net Assets Liabilities Net Deferred income tax due to temporary differences Allowance for doubtful accounts ￦ 143,526 (168 ) 143,358 130,700 (199 ) 130,501 PP&E - Depreciation 97,713 (66,805 ) 30,908 94,003 (70,076 ) 23,927 Share of profit or loss of equity-accounted investees 294,505 (69,939 ) 224,566 284,568 (14,930 ) 269,638 Allowance for inventories valuation 22,983 — 22,983 47,565 — 47,565 PP&E - Revaluation — (1,603,383 ) (1,603,383 ) — (147,735 ) (147,735 ) Prepaid expenses 19,604 (74 ) 19,530 17,003 (80 ) 16,923 PP&E - Impairment loss 453,669 — 453,669 17,099 — 17,099 Gain or loss on foreign currency translation 87,947 (89,052 ) (1,105 ) 75,235 (88,941 ) (13,706 ) Defined benefit liabilities 459,074 (607,415 ) (148,341 ) 550,140 (590,557 ) (40,417 ) Provision for construction losses 10,190 — 10,190 17,949 — 17,949 Provision for construction warranty 74,360 — 74,360 70,271 — 70,271 Accrued income — (50,452 ) (50,452 ) — (39,762 ) (39,762 ) Provision for accelerated depreciation — (8,510 ) (8,510 ) — (2,736,674 ) (2,736,674 ) Spin-off — — — 2,112,733 (918 ) 2,111,815 Impairment loss on AFS 118,149 — 118,149 94,542 — 94,542 Difference in acquisition costs of treasury shares 69,408 — 69,408 43,892 — 43,892 Others 540,588 (230,970 ) 309,618 468,549 (59,745 ) 408,804 2,391,716 (2,726,768 ) (335,052 ) 4,024,249 (3,749,617 ) 274,632 Deferred income taxes recognized directly to equity Net changes in fair value of equity investments at fair value through other comprehensive income 143,956 (70,497 ) 73,459 105,125 (69,097 ) 36,028 Others 159,793 (25,056 ) 134,737 30,370 (37,421 ) (7,051 ) 303,749 (95,553 ) 208,196 135,495 (106,518 ) 28,977 Deferred tax from tax credit Tax credit carry-forward and others 72,864 — 72,864 71,364 — 71,364 Investments in subsidiaries, associates and joint ventures Investments in subsidiaries, associates and joint ventures 513,884 (268,855 ) 245,029 463,133 (239,112 ) 224,021 ￦ 3,282,213 (3,091,176 ) 191,037 4,694,241 (4,095,247 ) 598,994 (f) As of December 31, 202 2 ￦ ￦ (g) The Company recognized current tax payable or receivable at the amount expected to be paid or received that reflects uncertainty related to income taxes.

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Earnings per Share	37. Earnings per Share (a) Basic earnings per share for the years ended December 31, 2020, 2021 and 2022 were as follows: (in Won, except share 2020 2021 2022 Profit attribute to controlling interest ￦ 1,581,207,551,926 6,606,727,454,113 3,157,536,155,264 Interests of hybrid bonds, net of tax (6,688,273,972 ) (6,669,999,999 ) (1,078,164,383 ) Weighted-average number of common shares outstanding(*1) 79,120,963 75,696,150 75,814,870 Basic earnings per share ￦ 19,900 87,191 41,634 (*1) The weighted-average number of common shares used to calculate basic earnings per share are as follows: (shares) 2020 2021 2022 Total number of common shares issued 87,186,835 87,186,835 84,571,230 Weighted-average number of treasury shares (8,065,872 ) (11,490,685 ) (8,756,360 ) Weighted-average number of common shares outstanding 79,120,963 75,696,150 75,814,870 (b) Diluted earnings per share for the years ended December 31, 2020, 2021 and 2022 were as follows: (in Won, except share 2020 2021 2022 Profit attribute to controlling interest ￦ 1,581,207,551,926 6,606,727,454,113 3,157,536,155,264 Interests of hybrid bonds, net of tax (6,688,273,972 ) (6,669,999,999 ) (1,078,164,383 ) Gain or loss from exchange rate on and revaluation of exchangeable bonds — (63,166,690,813 ) (55,751,463,819 ) Adjusted weighted-average number of common shares(*1) 79,120,963 76,688,340 78,906,375 Diluted earnings per share ￦ 19,900 85,240 39,296 (*1) The weighted-average number of common shares used to calculate diluted earnings per share are as follows: (shares) 2020 2021 2022 Weighted-average number of common shares outstanding 79,120,963 75,696,150 75,814,870 Weighted-average number of potential common share — 992,190 3,091,505 Adjusted weighted-average number of common shares 79,120,963 76,688,340 78,906,375 The Company has potentially issuable common shares due to its exchangeable bonds as of and Stock Grant program as of December 31, 2022. When considering the Stock Grant program, the issuable shares have an anti-dilution effect, therefore the effect from the Stock Grant program was excluded from the calculation of diluted earnings per share. The Company holds exchangeable bonds as potential common stocks with a diluting effect as of December 31, 2021 and 2022. Meanwhile, since there were no potential shares of common stock which had dilutive effects as of December 31, 2020, diluted earnings per share is equal to basic earnings per share.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Related Party Transactions	38. Related Party Transactions (a) Significant transactions between the controlling company and related companies for the years ended December 31, 2020, 2021 and 2022 were as follows: 1) For the year ended December 31, 2020 (in millions of Won) Sales and others(*1) Purchase and others(*2) Sales Others Purchase of Purchase of Outsourced Others Subsidiaries(*3) POSCO ENGINEERING & CONSTRUCTION CO.,LTD. ￦ 6,790 11,123 15 772,846 220 63,467 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 418,619 1,820 — — 28,523 639 POSCO ICT(*4) 2,747 4,996 — 374,914 41,384 181,554 eNtoB Corporation 15 60 214,750 34,217 76 25,870 POSCO CHEMICAL CO., LTD 258,154 34,944 456,780 23,003 304,135 4,816 POSCO ENERGY CO., LTD. 1,262 2,396 14,011 3 — 23,336 POSCO MOBILITY SOLUTION 381,591 — — — 32,325 1,500 POSCO INTERNATIONAL Corporation 5,644,017 56,322 342,520 — 11,371 4,375 POSCO Thainox Public Company Limited 311,924 137 2,538 — — — POSCO Canada Ltd. — 1,325 162,385 — — — POSCO Asia Co., Ltd. 1,514,154 1,060 151,373 4,331 1,508 3,915 Qingdao Pohang Stainless Steel Co., Ltd. 145,006 66 — — — 305 POSCO JAPAN Co., Ltd. 1,076,987 — 37,210 5,277 — 6,225 POSCO-VIETNAM Co., Ltd. 253,060 605 — — — 96 POSCO MEXICO S.A. DE C.V. 168,188 403 — — — 2,000 POSCO Maharashtra Steel Private Limited 328,943 2,507 — — — 479 POSCO (Suzhou) Automotive Processing Center Co., Ltd. 112,925 — — — — — POSCO VST CO., LTD. 208,464 218 — — — 156 POSCO INTERNATIONAL SINGAPORE PTE LTD. — — 600,580 — — — POSCO ASSAN TST STEEL INDUSTRY 264,786 948 2,314 — — 18 Others 806,672 22,069 71,261 45,695 238,496 135,429 11,904,304 140,999 2,055,737 1,260,286 658,038 454,180 Associates and joint ventures(*3) SNNC 5,651 4,739 545,001 — — — POSCO-SAMSUNG-Slovakia Processing Center 40,512 — — — — — Roy Hill Holdings Pty Ltd — 91,188 1,300,296 — — — Others 34,620 69,151 64,861 84,839 4,086 44,068 80,783 165,078 1,910,158 84,839 4,086 44,068 ￦ 11,985,087 306,077 3,965,895 1,345,125 662,124 498,248 (*1) Sales and others mainly consist of sales of steel products to subsidiaries, associates and joint ventures. (*2) Purchases and others mainly consist of subsidiaries’ purchases of construction services and purchases of raw materials to manufacture steel products. (*3) As of December 31, 2020, the company provided guarantees to related parties. (Note 39) (*4) Others (purchase) mainly consist of service fees related to maintenance and repair of ERP System. 2) For the year ended December 31, 2021 (in millions of Won) Sales and others(*1) Purchase and others(*2) Sales Others Purchase of Purchase of Outsourced Others Subsidiaries(*3) POSCO ENGINEERING & CONSTRUCTION CO.,LTD. ￦ 5,859 11,113 — 491,624 158 32,328 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 695,451 2,602 — — 39,014 627 POSCO ICT(*4) 1,605 4,996 — 324,275 46,037 181,221 eNtoB Corporation 14 — 381,633 65,254 115 25,242 POSCO CHEMICAL CO., LTD 318,808 31,917 462,013 14,358 298,431 3,724 POSCO ENERGY CO., LTD. 5,207 1,450 11,271 — — 26,137 POSCO MOBILITY SOLUTION 807,925 — — — 45,758 914 POSCO INTERNATIONAL Corporation 9,750,636 54,331 1,299,561 — 988 8,968 POSCO Thainox Public Company Limited 309,295 — — — — 69 POSCO Canada Ltd. — 1,372 202,523 — — — POSCO Asia Co., Ltd. 19,142 426 417 — — 1,648 Qingdao Pohang Stainless Steel Co., Ltd. 188,470 8 — — — 83 POSCO JAPAN Co., Ltd. 1,613,634 1 27,937 1,726 — 4,894 POSCO-VIETNAM Co., Ltd. 441,758 975 — — — 46 POSCO MEXICO S.A. DE C.V. 460,773 548 — — — 1,494 POSCO Maharashtra Steel Private Limited 899,675 903 — — — 229 POSCO (Suzhou) Automotive Processing Center Co., Ltd. 161,808 — — — — 2 POSCO VST CO., LTD. 201,517 — — — — 20 POSCO INTERNATIONAL SINGAPORE PTE LTD. — 1,453 1,704,193 — — — POSCO ASSAN TST STEEL INDUSTRY 278,749 734 8 — — 24 Others 1,337,458 56,161 220,000 63,116 276,202 153,677 17,497,784 168,990 4,309,556 960,353 706,703 441,347 Associates and joint ventures(*3) SNNC 72,797 2,514 736,441 — — 107 POSCO-SAMSUNG-Slovakia Processing Center 72,342 — — — — — Roy Hill Holdings Pty Ltd — 418,044 2,338,625 — — — Others 37,410 63,298 107,637 — — 49,741 182,549 483,856 3,182,703 — — 49,848 ￦ 17,680,333 652,846 7,492,259 960,353 706,703 491,195 (*1) Sales and others mainly consist of sales of steel products to subsidiaries, associates and joint ventures. (*2) Purchases and others mainly consist of subsidiaries’ purchases of construction services and purchases of raw materials to manufacture steel products. (*3) As of December 31, 2021, the company provided guarantees to related parties. (Note 39) (*4) Others (purchase) mainly consist of service fees related to maintenance and repair of ERP System. 3) For the year ended December 31, 2022 (in millions of Won) Sales and others(*1) Purchase and others(*2) Sales Dividends Others Purchase of Purchase of Outsourced Others Subsidiaries(*3) POSCO ￦ 87,165 — 2 — — — 10,446 POSCO ENGINEERING & CONSTRUCTION CO.,LTD. 7,502 16,555 7 — 80,306 — 13,086 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 133,743 — 215 — — 7,656 18 POSCO ICT(*4) 1,760 4,970 18 — 39,932 10,190 34,724 eNtoB Corporation 3 24 — 60,649 9,706 32 3,453 POSCO CHEMICAL CO., LTD 89,535 13,878 44 84,301 4,757 56,325 908 POSCO ENERGY CO., LTD. 4,331 — — 6,682 — — 3,925 POSCO MOBILITY SOLUTION 176,534 — — — — 8,802 28 POSCO INTERNATIONAL Corporation 2,102,356 62,093 — 244,230 — 768 1,049 POSCO Thainox Public Company Limited 49,359 22,867 — — — — 1 POSCO Canada Ltd. — — — 77,225 — — — Qingdao Pohang Stainless Steel Co., Ltd. 32,584 — — — — — — POSCO JAPAN Co., Ltd. 28,790 — — 835 — — 16 POSCO-VIETNAM Co., Ltd. 44,840 — 513 — — — — POSCO MEXICO S.A. DE C.V. 102,776 — 562 — — — — POSCO Maharashtra Steel Private Limited 171,806 — 1,130 — — — 120 POSCO (Suzhou) Automotive Processing Center Co., Ltd. 42,320 — — — — — 15 POSCO VST CO., LTD. 28,475 — — — — — — POSCO INTERNATIONAL SINGAPORE PTE LTD. — — 179 379,823 — — — POSCO ASSAN TST STEEL INDUSTRY 47,335 — 537 — — — 8 Others 203,869 2,452 6,574 61,457 18,844 53,139 223,222 3,355,083 122,839 9,781 915,202 153,545 136,912 291,019 Associates and joint ventures(*3) SNNC 3,242 5,348 8 148,239 — — — POSCO-SAMSUNG-Slovakia Processing Center 25,614 — — — — — — Roy Hill Holdings Pty Ltd — 186,813 — 210,455 — — — Others 78,048 209,457 14,704 14,015 — — 197 106,904 401,618 14,712 372,709 — — 197 ￦ 3,461,987 524,457 24,493 1,287,911 153,545 136,912 291,216 (*1) Sales and others mainly consist of sales of steel products to subsidiaries, associates and joint ventures. (*2) Purchases and others mainly consist of subsidiaries’ purchases of construction services and purchases of raw materials to manufacture steel products. (*3) As of December 31, 2022, the company provided guarantees to related parties. (Note 39) (*4) Others (purchase) mainly consist of service fees related to maintenance and repair of ERP System. (b) The related account balances of receivables and payables resulting from significant transactions between the controlling company and related companies as of December 31, 2021 and 2022 are as follows: 1) December 31, 2021 (in millions of Won) Receivables Payables Trade accounts Others Total Trade accounts Accounts Others Total Subsidiaries POSCO ENGINEERING & CONSTRUCTION CO., LTD. ￦ 5,692 10 5,702 — 97,007 507 97,514 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 95,001 — 95,001 — 154 5,082 5,236 POSCO ICT 221 3 224 3,736 155,064 27,562 186,362 eNtoB Corporation — — — 1,683 23,851 — 25,534 POSCO CHEMICAL CO., LTD 35,895 3,664 39,559 12,969 57,498 17,990 88,457 POSCO ENERGY CO., LTD. 1,485 292 1,777 — 6,169 10,066 16,235 POSCO MOBILITY SOLUTION 133,608 — 133,608 71 2,232 5,104 7,407 POSCO INTERNATIONAL Corporation 1,279,463 4 1,279,467 4,831 483 502 5,816 POSCO Thainox Public Company Limited 54,804 — 54,804 — — — — Qingdao Pohang Stainless Steel Co., Ltd. 35,423 — 35,423 — 83 — 83 POSCO MEXICO S.A. DE C.V. 179,428 251 179,679 — — — — POSCO Maharashtra Steel Private Limited 530,693 1,048 531,741 — — — — POSCO INTERNATIONAL SINGAPORE PTE LTD. — 14 14 169,565 90 — 169,655 POSCO ASSAN TST STEEL INDUSTRY 220,481 951 221,432 — — — — PT. KRAKATAU POSCO 1,395 14,750 16,145 — — — — Others 366,857 7,011 373,868 22,583 48,274 84,778 155,635 2,940,446 27,998 2,968,444 215,438 390,905 151,591 757,934 Associates and joint ventures SNNC 420 65 485 52,396 — — 52,396 Roy Hill Holdings Pty Ltd — 34,356 34,356 436,774 — — 436,774 FQM Australia Holdings Pty Ltd(*1) — 181,122 181,122 — — — — Others 168,167 15,895 184,062 5,549 187 — 5,736 168,587 231,438 400,025 494,719 187 — 494,906 ￦ 3,109,033 259,436 3,368,469 710,157 391,092 151,591 1,252,840 (*1) During the year ended December 31, 2021, the Company made a new loan of ￦ 2) December 31, 2022 (in millions of Won) Receivables Payables Trade accounts Others Total Accounts Others Total Subsidiaries POSCO ￦ 75,343 6,600 81,943 5,678 14,663 20,341 POSCO ENGINEERING & CONSTRUCTION CO., LTD. 3,808 660 4,468 — — — POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 818 — 818 — — — POSCO ICT 687 — 687 859 705 1,564 eNtoB Corporation — — — — — — POSCO CHEMICAL CO., LTD 8,550 — 8,550 — 5,086 5,086 POSCO ENERGY CO., LTD. 3,400 462 3,862 — 1,593 1,593 POSCO MOBILITY SOLUTION 489 — 489 — — — POSCO INTERNATIONAL Corporation 2,002 — 2,002 — 502 502 Qingdao Pohang Stainless Steel Co., Ltd. — — — 122 — 122 POSCO Maharashtra Steel Private Limited — 466 466 486 — 486 POSCO ASSAN TST STEEL INDUSTRY — 513 513 104 — 104 PT. KRAKATAU POSCO — 8,967 8,967 391 — 391 Others 1,918 5,618 7,536 11,874 3,335 15,209 97,015 23,286 120,301 19,514 25,884 45,398 Associates and joint ventures SNNC 94 — 94 — — — Roy Hill Holdings Pty Ltd 23,400 — 23,400 — — — FQM Australia Holdings Pty Ltd(*1) — 202,562 202,562 — — — Others 190 761 951 74 — 74 23,684 203,323 227,007 74 — 74 ￦ 120,699 226,609 347,308 19,588 25,884 45,472 (*1) FQM Australia Holdings Pty Ltd’s other receivable consists of long-term loans. During the year ended December 31, 2022, the company provided additional loan ￦ (c) Significant transactions between the Company, excluding the controlling company, and related companies for the years ended December 31, 2020, 2021 and 2022 were as follows: 1) For the year ended December 31, 2020 (in millions of Won) Sales and others Purchase and others Sales Others Purchase of Others Associates and joint ventures POSCO PLANTEC Co., Ltd. ￦ 2,558 — 5 — New Songdo International City Development, LLC 125,909 26,451 — 137 SNNC 61,332 30 48,764 126,060 Chuncheon Energy Co., Ltd. 213 211 — — Noeul Green Energy Co., Ltd. 6,059 — — 829 CSP—Compania Siderurgica do Pecem 47,243 11,432 165,269 14,399 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 42,189 — 37,509 151 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. — — 5,780 — POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd 8,757 — — — PT. Batutua Tembaga Raya — 1,061 28,174 — POSCO SeAH Steel Wire(Nantong) Co., Ltd. 29,964 — 384 — DMSA/AMSA — — 29,189 — South-East Asia Gas Pipeline Company Ltd. 7 71,299 — — POSCO MITSUBISHI CARBON TECHNOLOGY 31,068 19,530 3,608 701 Samcheok BluePower Co., Ltd 220,372 — — — TK CHEMICAL CORPORATION 104,749 — 26,863 — Pocheon-Hwado Highway Corp. 17,631 — — — UITrans LRT Co., Ltd. 2,263 — — — Roy Hill Holdings Pty Ltd — 22,797 — — Others 162,257 49,158 49,315 37,582 ￦ 862,571 201,969 394,860 179,859 2) For the year ended December 31, 2021 (in millions of Won) Sales and others Purchase and others Sales Dividends Others Purchase of Others Associates and joint ventures New Songdo International City Development, LLC ￦ 286,731 — 266 — 165 SNNC 75,129 — 743 19,720 40,090 Noeul Green Energy Co., Ltd. 6,127 — — — 1,896 CSP—Compania Siderurgica do Pecem 4,660 — — 96,179 — Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 46,323 — — 33,316 5,686 POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd. 14,673 — — — — POSCO SeAH Steel Wire (Nantong) Co., Ltd. 39,887 — — 164 — DMSA/AMSA — — — 9,875 — South-East Asia Gas Pipeline Company Ltd. — 27,828 7,564 — — POSCO MITSUBISHI CARBON TECHNOLOGY 65,746 — 10 4,347 180 Samcheok Blue Power Co., Ltd. 263,730 405 — — 4 TK CHEMICAL CORPORATION 14,906 — — 2,292 — Pocheon-Hwado Highway Corp. 62,829 — — — — UITrans LRT Co., Ltd. 10,736 — — — — Roy Hill Holdings Pty Ltd — 104,903 — — — Others 184,606 49,031 15,449 31,379 18,505 ￦ 1,076,083 182,167 24,032 197,272 66,526 3) For the year ended December 31, 2022 (in millions of Won) Sales and others Purchase and others Sales Dividends Others Purchase of Others Associates and joint ventures New Songdo International City Development, LLC ￦ 270,465 — — — 148 SNNC 161,565 — 412 613,514 1,755 Noeul Green Energy Co., Ltd. 5,531 — — — 1,716 CSP—Compania Siderurgica do Pecem 7,173 — — 126,123 22,663 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd(*1) 17,824 — — 24,190 — POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd. 14,863 — — — — POSCO SeAH Steel Wire (Nantong) Co., Ltd. 32,007 — — 357 — South-East Asia Gas Pipeline Company Ltd. — 14,541 2,974 — — POSCO MITSUBISHI CARBON TECHNOLOGY 134,498 24,000 — 5,446 — Samcheok Blue Power Co., Ltd. 502,259 9,992 26 — — Pocheon-Hwado Highway Corp. 93,428 — — — — UITrans LRT Co., Ltd. — — — — — Roy Hill Holdings Pty Ltd — 46,780 — 1,463,383 — Others 547,627 137,733 3,026 507,705 122,092 ￦ 1,787,240 233,046 6,438 2,740,718 148,374 (*1) Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd was excluded from the association due to the sale of its shares during the year ended December 31, 2022. (d) The related account balances of receivables and payables resulting from significant transactions between the Company, excluding the controlling company, and related companies as of December 31, 2021 and December 31, 2022 are as follows: 1) December 31, 2021 (in millions of Won) Receivables(*1) Payables Trade Loans Others Total Trade Others Total Associates and joint ventures New Songdo International City Development, LLC ￦ 49,748 — 16,261 66,009 — — — Chuncheon Energy Co., Ltd. — — — — 257 — 257 Samcheok Blue Power Co., Ltd. 120,672 — — 120,672 — 23,683 23,683 Nickel Mining Company SAS — 62,611 477 63,088 — — — CSP—Compania Siderurgica do Pecem — — — — 3,144 — 3,144 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 9,108 — — 9,108 4,393 — 4,393 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 19,271 — — 19,271 — 18 18 South-East Asia Gas Pipeline Company Ltd. — 47,423 — 47,423 — — — POSCO MITSUBISHI CARBON TECHNOLOGY 8,183 — — 8,183 1,083 — 1,083 Pocheon-Hwado Highway Corp. 14,162 — — 14,162 — — — UITrans LRT Co., Ltd. 7,048 29,099 — 36,147 — — — Roy Hill Holdings Pty Ltd — — 8,589 8,589 — — — SNNC 4,708 — — 4,708 143 — 143 Others 34,254 179,036 106,186 319,476 97 31,047 31,144 ￦ 267,154 318,169 131,513 716,836 9,117 54,748 63,865 (*1) As of December 31, 2021, the Company recognizes bad-debt allowance for receivables amounting to ￦ 2) December 31, 2022 (in millions of Won) Receivables(*1) Payables Trade Loans Others Total Trade Others Total Associates and joint ventures New Songdo International City Development, LLC ￦ 63,413 — 16,858 80,271 — 39,664 39,664 Chuncheon Energy Co., Ltd. — — — — — 50 50 Samcheok Blue Power Co., Ltd. 107,119 — — 107,119 — 18,224 18,224 Nickel Mining Company SAS — 63,024 263 63,287 — 358 358 CSP—Compania Siderurgica do Pecem 3 — — 3 — — — POSCO SeAH Steel Wire(Nantong) Co., Ltd. 7,096 — — 7,096 — — — South-East Asia Gas Pipeline Company Ltd. — — — — — — — POSCO MITSUBISHI CARBON TECHNOLOGY 12,589 — 52 12,641 1,198 4 1,202 Pocheon-Hwado Highway Corp. 16,297 — — 16,297 — — — UITrans LRT Co., Ltd. — 36,510 — 36,510 — 1,999 1,999 Roy Hill Holdings Pty Ltd — — 7,110 7,110 571,084 — 571,084 SNNC 7,827 — 51 7,878 44,124 198 44,322 POSCO(Guangdong) Automotive Steel Co., Ltd. — 35,131 — 35,131 — — — Others 98,920 185,022 112,538 396,480 54,708 25,241 79,949 ￦ 313,264 319,687 136,872 769,823 671,114 85,738 756,852 (*1) As of December 31, 2022, the Company recognizes bad-debt allowance for receivables amounting to ￦ (e) Significant financial transactions between the Company, excluding the controlling company, and related companies for the years ended December 31, 2021 and 2022 were as follows: 1) December 31, 2021 (in millions of Won) Beginning Lend Collect Others(*1) Ending Associates and joint ventures UITrans LRT Co., Ltd. ￦ 23,452 5,682 — (35 ) 29,099 South-East Asia Gas Pipeline Company Ltd. 91,003 — (49,928 ) 6,348 47,423 PT. Batutua Tembaga Raya(*2) 35,355 — — (35,355 ) — PT. Tanggamus Electric Power 4,304 — — 386 4,690 PT. Wampu Electric Power 5,186 — — 465 5,651 PT. POSMI Steel Indonesia 2,176 — — 195 2,371 Nickel Mining Company SAS 62,420 — — 191 62,611 KRAKATAU POS-CHEM DONG-SUH CHEMICAL 5,440 — — (698 ) 4,742 POS-SeaAH Steel Wire (Thailand) Co., Ltd. 6,528 — — 585 7,113 AMCI (WA) PTY LTD 83,291 6,154 — 2,220 91,665 POS-AUSTEM YANTAI AUTOMOTIVE CO.,LTD 5,440 — — 488 5,928 POS-AUSTEM WUHAN AUTOMOTIVE CO.,LTD 8,704 — — 780 9,484 Hyo-chun Co., Ltd. 2,382 — — — 2,382 POS-AUSTEM Suzhou Automotive Co., Ltd 16,320 — — 1,463 17,783 CAML RESOURCES PTY LTD 3,312 — (3,312 ) — — Shinahn wind power generation(*3) 37 60 — (97 ) — FQM Australia Holdings Pty Ltd — 27,242 — (15 ) 27,227 ￦ 355,350 39,138 (53,240 ) (23,079 ) 318,169 (*1) Includes adjustments of foreign currency translation differences and others. (*2) PT. Batutua Tembaga Raya was excluded from the association due to the sale of its shares during the years ended December 31, 2021. Meanwhile, the uncollected loan was offset and written off from the loan loss provisions set in the previous period, and these effects are included in Others. (*3) Shinahn Wind Power Generation was excluded from the association due to the sale of its shares during the years period ended December 31, 2021. 2) December 31, 2022 (in millions of Won) Beginning Lend Collect Others(*1) Ending Associates and joint ventures UITrans LRT Co., Ltd. ￦ 29,099 7,460 (5 ) (44 ) 36,510 South-East Asia Gas Pipeline Company Ltd. 47,423 — (45,639 ) (1,784 ) — PT. Tanggamus Electric Power 4,690 — — 324 5,014 PT. Wampu Electric Power 5,651 — (1,876 ) 213 3,988 PT. POSMI Steel Indonesia 2,371 — (2,371 ) — — Nickel Mining Company SAS 62,611 — — 413 63,024 KRAKATAU POS-CHEM DONG-SUH CHEMICAL 4,742 — (1,264 ) 324 3,802 POS-SeAH Steel Wire (Thailand) Co., Ltd. 7,113 — — 491 7,604 AMCI (WA) PTY LTD 91,665 6,975 — 5,641 104,281 POS-AUSTEM YANTAI AUTOMOTIVE CO.,LTD 5,928 — (6,548 ) 620 — POS-AUSTEM WUHAN AUTOMOTIVE CO.,LTD 9,484 — — 654 10,138 Hyo-chun Co., Ltd. 2,382 — — — 2,382 POS-AUSTEM Suzhou Automotive Co., Ltd 17,783 — (6,069 ) 959 12,673 FQM Australia Holdings PTY Ltd 27,227 7,935 — (122 ) 35,040 POHANG E&E Coi., LTD — 100 — — 100 POSCO(Guangdong) Automotive Steel Co., Ltd. — 35,131 — — 35,131 ￦ 318,169 57,601 (63,772 ) 7,689 319,687 (*1) Includes adjustments of foreign currency translation differences and others. (f) For the years ended December 31, 2020, 2021 and 2022, details of compensation to key management officers were as follows: (in millions of Won) 2020 2021 2022 Short-term benefits ￦ 109,546 111,900 174,629 Long-term benefits 15,288 18,115 9,182 Retirement benefits 16,238 22,239 22,106 ￦ 141,072 152,254 205,917 Key management officers include directors (including non-standing directors), executive officers and fellow officers who have significant influences and responsibilities in the Company’s business and operations.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Commitments and Contingencies	39. Commitments and Contingencies (a) Contingent liabilities Contingent liabilities may develop in a way not initially expected. Therefore, management continuously assesses contingent liabilities to determine whether an outflow of resources embodying economic benefits has become probable. If it becomes probable that an outflow of future economic benefits will be required for an item previously dealt with as a contingent liability, a provision is recognized in the consolidated financial statements of the period in which the change in probability occurs (except in the extremely rare circumstances where no reliable estimate can be made). Management makes estimates and assumptions that affect disclosures of commitments and contingencies. All estimates and assumptions are based on the evaluation of current circumstances and appraisals with the supports of internal specialists or external consultants. Management regularly analyzes current information about these matters and provides for probable contingent losses including the estimate of legal expense to resolve the matters. Internal and external lawyers are used for these assessments. In making the decision regarding the need for a provision, management considers whether the Company has an obligation as a result of a past event, whether it is probable that an outflow or cash or other resources embodying economic benefits will be required to settle the obligation and the ability to make a reliable estimate of the amount of the obligation. (b) Details of guarantees 1) Contingent liabilities on outstanding guarantees provided by the Company as of December 31, 2022 are as follows: (in millions of Won) Guarantee limit Guarantee amount Guarantor Guarantee beneficiary Financial institution Foreign currency Won equivalent Foreign currency Won equivalent [The Company] POSCO HOLDINGS INC. POSCO Asia Co., Ltd. Credit Agricole and others USD 205,000,000 259,797 — — POSCO Maharashtra Steel Private Limited SMBC and others USD 139,784,000 177,149 109,784,000 139,129 PT. KRAKATAU POSCO Export-Import Bank of Korea and others USD 2,164,300,000 2,742,818 1,250,244,173 1,584,435 POSCO ASSAN TST STEEL INDUSTRY SOCIETE GENERALE and others USD 131,874,750 167,126 131,874,750 167,126 POSCO POSCO MEXICO S.A. DE C.V. BOA and others USD 60,000,000 76,038 60,000,000 76,038 POSCO-VIETNAM Co., Ltd. SMBC and others USD 156,000,000 197,699 109,999,999 139,403 POSCO COATED STEEL (THAILAND) CO., LTD. SMBC and others THB 5,501,000,000 201,667 4,765,000,000 174,685 POSCO INTERNATIONAL Corporation POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE. LTD. Export-Import Bank of Korea and others USD 180,000,000 228,114 150,000,000 190,095 POSCO INTERNATIONAL POWER (PNGLAE) LIMITED KDB bank USD 20,880,000 26,461 17,400,000 22,051 GOLDEN LACE POSCO INTERNATIONAL CO., LTD. Shinhan Bank and others USD 13,200,000 16,728 11,000,000 13,940 PT. Bio Inti Agrindo BTPN and others IDR 1,250,510,000,000 101,166 1,178,510,000,000 95,341 POSCO ASSAN TST STEEL INDUSTRY ING USD 14,652,750 18,569 14,652,750 18,569 POSCO INTERNATIONAL Deutschland GmbH Bank Mendes Gans Amsterdam USD 50,000,000 63,365 — — POSCO INTERNATIONAL AMERICA Corp. 15,002,042 19,012 POSCO INTERNATIONAL JAPAN Corp. 7,521,345 9,532 POSCO INTERNATIONAL SINGAPORE PTE. LTD. — — POSCO INTERNATIONAL Malaysia SDN BHD — — POSCO INTERNATIONAL Italia S.R.L. — — POSCO INTERNATIONAL MEXICO S.A. de C.V. — — (in millions of Won) Guarantee limit Guarantee amount Guarantor Guarantee beneficiary Financial institution Foreign currency Won equivalent Foreign currency Won equivalent GRAIN TERMINAL HOLDING PTE. LTD. Export-Import Bank of Korea and others USD 27,000,000 34,217 27,000,000 34,217 POSCO INTERNATIONAL E&P MALAYSIA SDN. BHD. SC, Malaysia USD 6,000,000 7,604 6,000,000 7,604 POSCO ENGINEERING & CONSTRUCTION CO., LTD. POSCO E&C Vietnam Co., Ltd. POSCO Asia Co., Ltd. and others USD 36,000,000 45,623 36,000,000 45,623 PT.POSCO E&C INDONESIA POSCO Asia Co., Ltd. and others USD 25,900,000 32,823 25,900,000 32,823 POSCO ICT PT.POSCO ICT INDONESIA POSCO Asia Co., Ltd. and others USD 1,500,000 1,901 300,000 380 POSCO STEELEON Co., Ltd. Myanmar POSCO C&C Company, Limited. POSCO Asia Co., Ltd. and others USD 13,986,947 17,726 11,952,170 15,147 POSCO ENERGY CO., LTD PT. KRAKATAU POSCO ENERGY POSCO Asia Co., Ltd. and others USD 65,102,271 82,504 65,102,271 82,504 [Associates and joint ventures] POSCO HOLDINGS INC. CSP—Compania Siderurgica do Pecem Export-Import Bank of Korea and others USD 420,000,000 532,264 358,266,014 454,030 BNDES BRL 464,060,000 111,244 464,060,000 111,244 Nickel Mining Company SAS SMBC EUR 46,000,000 62,155 46,000,000 62,155 POSCO LLP POSUK Titanium SMBC USD 13,500,000 17,109 13,250,000 16,792 POSCO INTERNATIONAL Corporation GLOBAL KOMSCO Daewoo LLC Hana Bank USD 6,650,000 8,428 6,300,000 7,984 POSCO ENGINEERING & CONSTRUCTION CO., LTD. Chun-cheon Energy Co., Ltd. Kookmin Bank and others KRW 149,200 149,200 143,110 143,110 [Others] POSCO INTERNATIONAL Corporation SHERRITT INTERNATIONAL CORP. Export-Import Bank of Korea USD 21,818,182 27,650 860,880 1,091 POSCO ENGINEERING & CONSTRUCTION CO., LTD. Busan Sanseong Tunnel and others Balhae Infrastructure Fund and others KRW 1,491,670 1,491,670 547,785 547,785 POSCO ICT Busan Sanseong Tunnel Kookmin Bank KRW 7,621 7,621 6,391 6,391 POSCO AUSTRALIA PTY LTD Department of Trade and Investment (NSW Government) and others Woori Bank and others AUD 14,242,095 12,226 14,242,095 12,226 PT. Bio lnti Agrindo KSU Mandob Bank Muamalat IDR 80,000,000,000 6,472 80,000,000,000 6,472 POSCO Maharashtra Steel Private Limited Gail India and others HSBC and others INR 772,210,905 11,823 772,210,905 11,823 USD 3,773,148,900 4,781,713 2,428,410,394 3,077,525 KRW 1,648,491 1,648,491 697,286 697,286 IDR 1,330,510,000,000 107,638 1,258,510,000,000 101,813 INR 772,210,905 11,823 772,210,905 11,823 THB 5,501,000,000 201,667 4,765,000,000 174,685 EUR 46,000,000 62,155 46,000,000 62,155 AUD 14,242,095 12,226 14,242,095 12,226 BRL 464,060,000 111,244 464,060,000 111,244 2) Contingent liabilities on debt acquisition, financial support agreement provided by the Company as of December 31, 2022 are as follows: (in millions of Won) Agreed amount Executed amount Provider Recipient Creditor Foreign Won Foreign Won [The Company] POSCO ENGINEERING & CONSTRUCTION CO., LTD. JB CLARK HILLS HSBC and others USD 30,000,000 38,019 27,500,000 34,851 [Associates and joint ventures] POSCO ENGINEERING & CONSTRUCTION CO., LTD. New Songdo International City Development, LLC Others KRW 520,000 520,000 453,400 453,400 POHANG E&E Coi., LTD Heungkuk Life Insurance Co., Ltd. KRW 71,930 71,930 50,492 50,492 UITrans LRT Co., Ltd Kookmin Bank and others KRW 205,051 205,051 176,600 176,600 Pocheon-Hwado Highway Corp. Lotte Insurance Co., Ltd and others KRW 319,526 319,526 95,137 95,137 Pureun Tongyeong Enviro Co., Ltd. KDB Bank and others KRW 22,714 22,714 13,035 13,035 Pure Gimpo.Co.,Ltd KDB Bank and others KRW 51,559 51,559 27,213 27,213 Clean Iksan Co.,Ltd SAMSUNG FIRE & MARINE INSURANCE KRW 44,054 44,054 27,710 27,710 POSCO ICT UITrans LRT Co., Ltd Kookmin Bank KRW 43,736 43,736 35,261 35,261 [Others] POSCO ENGINEERING & CONSTRUCTION CO., LTD. Incheon-Gimpo Expressway Co., Ltd and others Kookmin Bank and others KRW 3,823,072 3,823,072 1,627,863 1,627,863 POSCO ICT Incheon-Gimpo Expressway Co., Ltd and others Kookmin Bank and others KRW 216,051 216,051 94,474 94,474 (c) Other commitments Details of other commitments of the Company as of December 31, 2022 are as follows: Company Description POSCO HOLDINGS INC. As of December 31, 2022, POSCO HOLDINGS INC. entered into a commitment with KOREA ENERGY AGENCY for long-term foreign currency borrowings, which are limited up to the amount of USD 4.12 million. The borrowing is related to the exploration of gas hydrates in Western Fergana-Chinabad. The repayment of the borrowings depends on the success of the projects. POSCO HOLDINGS INC. is not liable for the repayment of full or part of the amount borrowed if the respective projects fail. POSCO HOLDINGS INC. has agreed to pay a certain portion of its profits under certain conditions, as defined by the borrowing agreements. As of December 31, 2022, the ending balance of the borrowing amounts to USD 1.02 million. POSCO HOLDINGS INC. has provided a supplemental funding agreement, as the largest shareholder, as requested from the creditors, including Norddeutsche Landesbank, for seamless funding to POSCO ENERGY Co., Ltd., a subsidiary of the Company, under construction of new power plant. POSCO HOLDINGS INC. has deposited 3,128,714 treasury shares for exchange with the Korea Securities Depository in relation to foreign currency exchangeable bonds as of December 31, 2022. Company Description POSCO POSCO entered into long-term contracts to purchase iron ore, coal, nickel and others. The contracts of iron ore and coal generally have terms of more than three years and the contracts of nickel have terms of more than one year. These contracts provide for periodic price adjustments based on the market price. As of December 31, 2022, 66 million tons of iron ore and 4 million tons of coal remained to be purchased under such long-term contracts. POSCO entered into an agreement with Tangguh Liquefied Natural Gas (LNG) Consortium in Indonesia to purchase 550 thousand tons of LNG annually for 20 years commencing in August 2005. The purchase price is subject to change, based on changes of the monthly standard oil price (JCC) and with a price ceiling. POSCO has a long-term service contract for the transportation of raw material. As of December 31, 2022, there are 36 vessels under contract, and the average remaining contract period is about 8 years. POSCO INTERNATIONAL Corporation POSCO INTERNATIONAL Corporation operates a ship-to-ship business in which ships are chartered from ship’s owners and leased out to shippers. The Company has entered into a ship purchase agreement with the ship owners and the shippers, which obliges the shippers to pay the agreed amount either at the end of the contract terms or at the agreed termination and to take over the ownership of the vessel from the ship owners. Only if the shipper fails to fulfill its obligation including payment obligation for the purchase of the vessel, the Company is obliged to take over the ship based on the condition that the shipper’s contractual obligations and rights are transferred to the company. As of December 31, 2022, the amount which is exposed to the ship purchase agreements entered into is USD 170 million. The Company invested in the Ambatovy Nickel Project (DMSA/AMSA) in Madagascar through the Korea Ambatovy Consortium (KAC) formed with Korea Mine Rehabilitation and Mineral Resources Corporation (KOMIR) and STX Corporation. SHERRITT INTERNATIONAL CORP., the operator, transferred a portion of the project’s interests to Sumitomo and AHL (Ambatovy Holdings Limited) in November 2017, and transferred the remaining interests of the project to Sumitomo and AHL2 (Ambatovy Holdings II Limited) in August 2020. KAC has the rights and obligations to the 15.33% stake held by AHL and AHL2. POSCO ENGINEERING & CONSTRUCTION CO., LTD. As of December 31, 2022, POSCO ENGINEERING & CONSTRUCTION CO., LTD. has foreign currency guarantees of up to USD 1,572 million provided by financial institutions and uses USD 753 million with Woori Bank and others. As of December 31, 2022, according to the project agreements related to redevelopment and reconstruction projects, the Company has an agreement to compensate the Korea Housing and Urban Guarantee Corporation for damages of principal and interest amounting to ￦ ￦ Company Description As of December 31, 2022, according to the investor agreement for the construction of Samcheok Thermal Power Plant, POSCO ENGINEERING & CONSTRUCTION CO., LTD is obligated to make contibutions for core capital, unqualified investment, excess expenses occurred for business, and accelaration of payment. Among them, the remaining amount of the core capital investment obligation is ￦ POSCO ICT As of December 31, 2022, in relation to contract enforcement, POSCO ICT is provided with a guarantee of ￦ ￦ ￦ ￦ (d) Litigation in progress 1) Request for Arbitration of NSC Investment and TGC In March 2019, NSC Investment and TGC(“Applicant”), a former joint venture partner of POSCO ENGINEERING & CONSTRUCTION CO., LTD., in connection with the Songdo International City Development Project in Incheon, filed an arbitration (mediation price: approximately USD 2.3 billion) for alleged violations of contract by POSCO ENGINEERING & CONSTRUCTION CO., LTD. In the meantime the Company has determined that the Applicant’s claim is without merit, and did not recognized a provision. Meanwhile, on October 28, 2022, the final arbitration ruling resulted in the rejection of all of the Applicant’s demands. 2) Other litigation As of December 31, 2022, litigations in progress that POSCO HOLDINGS INC. and certain subsidiaries are defendants in legal actions arising from the normal course of business are as follows: (in millions of Won, in thousands of foreign currencies) Company Legal Claim amount Won Description POSCO HOLDINGS INC. 2 KRW 9,445 9,445 Lawsuit on claim for damages and others POSCO 46 KRW 254,990 254,990 Lawsuit on claim for employee status and others POSCO INTERNATIONAL Corporation 1 CAD 79,000 73,895 Lawsuit on claim for damages 2 INR 4,469,396 68,426 Lawsuit on claim for payment on guarantees and others(*1) 6 KRW 15,116 15,116 Lawsuit on claim for damages and others 1 PKR 124,775 697 Lawsuit on claim for damages 5 USD 73,141 92,692 Lawsuit on claim for damages and others POSCO ENGINEERING & CONSTRUCTION CO., LTD. 107 KRW 546,364 546,364 Lawsuit on claim for damages and others(*1) POSCO ICT 1 BRL 7,586 1,818 Lawsuit on claim for damages 14 KRW 7,751 7,751 Lawsuit on claim for damages and others(*1) POSCO ENERGY CO., LTD. 2 KRW 66,505 66,505 Lawsuit on claim for damages and others POSCO CHEMCAL CO., LTD 3 KRW 1,514 1,514 Lawsuit on claim for damages and others POSCO M-TECH 1 KRW 45 45 Lawsuit on claim for damages and others POSCO A&C 8 KRW 11,556 11,556 Lawsuit on claim for payment on construction and others(*1) POSCO O&M Co., Ltd. 3 KRW 1,035 1,035 Lawsuit on claim for damages and others eNtoB Corporation 1 KRW 14 14 Lawsuit on claim for damages and others POSCO MOBILITY SOLUTION 1 KRW 6 6 Lawsuit on claim for wages POSCO Humans 2 KRW 233 233 Lawsuit on claim for invalidation of dismissal(*1) POSCO-India Pune Processing Center. 1 INR 2,197,800 33,648 Lawsuit over contract dispute POSCO INTERNATIONAL VIETNAM 1 VND 579,407 31 Lawsuit over contract dispute(*1) POSCO Engineering and Construction India Private Limited 2 INR 493,968 7,563 Lawsuit on claim for payment and others POSCO ENGINEERING & CONSTRUCTION DO BRAZIL 79 BRL 185,766 44,532 Lawsuit on claim for payment on construction and others(*1) POSCO ENGINEERING (THAILAND) 1 THB 160,929 5,900 Lawsuit on claim for payment on construction QINGDAO POHANG STAINLESS STEEL CO., LTD. 4 CNY 55,760 10,117 Lawsuit over contract dispute POSCO INDIA PROCESSING CENTER PRIVATE LIMITED 1 INR 54,420 833 Lawsuit on claim for damages POSCO E&C CHINA CO., LTD. 2 CNY 24,837 4,506 Lawsuit over contract dispute and others POSCO SOUTH EAST ASIA PTE. LTD 2 USD 15,900 20,150 Lawsuit over contract dispute and others Brazil Sao Paulo Steel Processing Center 4 BRL 3,844 921 Lawsuit on claim for labor and others POSCO Thainox Public Company Limited 1 THB 3,000 110 Lawsuit on invalidation of a check POSCO(Yantai) Automotive Processing Center Co., Ltd 1 CNY 231 42 Lawsuit on claim for labor and others POSCO ASSAN TST STEEL INDUSTRY 6 USD 133 168 Lawsuit on claim for labor and others(*1) POSCO TNPC Otomotiv Celik San. Ve Tic. A.S 3 TRY 93 6 Lawsuit over industrial accidents and others(*1) POSCO(Dalian) IT Center Development 1 CNY 49 9 Lawsuit on claim for damages POSCO-India Private Limited 1 INR 2,466 38 Lawsuit on claim for wages PT. KRAKATAU POSCO ENERGY 1 IDR 38,243,593 3,094 Lawsuit on claim for wages POSCO INTERNATIONAL SINGAPORE PTE. LTD. 1 USD 54,665 69,276 Lawsuit on claim for damages (*1) The Company made a reliable estimate in 57 lawsuits by considering the possibility and amount of expected outflow of resources and recognized ￦ For all the other lawsuits and claims, management does not believe the Company has any present obligations and therefore, the Company has not recognized any provisions as of December 31, 2022 for the matters. (e) Other contingent circumstances Other major contingencies for the Company as of December 31, 2022 are as follows: Company Description POSCO HOLDINGS INC. POSCO HOLDINGS INC. has provided 3 blank checks to Korea Energy Agency as collateral for long-term foreign currency borrowings. POSCO HOLDINGS INC. is jointly liable for guarantees of indebtedness (including financial guarantee contracts) before the spin off date of POSCO. POSCO INTERNATIONAL Corporation As of December 31, 2022, POSCO INTERNATIONAL Corporation has provided 30 blank promissory notes and 23 blank checks to Korea Energy Agency and others as collateral for the guarantee on performance for contracts and others. POSCO ENGINEERING & CONSTRUCTION CO., LTD. As of December 31, 2022, POSCO ENGINEERING & CONSTRUCTION CO., LTD. has provided 34 blank checks and 4 blank promissory notes as collateral for agreements and outstanding loans, and has provided joint guarantee of ￦7,515,815 million for guarantee that partners had issued from Korea Housing & Urban Guarantee Corporation and others. POSCO ICT As of December 31, 2022, POSCO ICT has provided 6 blank checks to financial institutions as collateral for the guarantee on performance for contracts and others.

Additional Information of State

Additional Information of Statement of Cash Flows	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Additional Information of Statement of Cash Flows	40. Additional Information of Statement of Cash Flows (a) Changes in operating assets and liabilities for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Trade accounts and notes receivable ￦ 818,857 (1,492,664 ) 531,848 Other receivables 210,630 (441,412 ) (96,141 ) Inventories 1,443,931 (6,346,717 ) (195,309 ) Other current assets 51,750 (210,614 ) (230,084 ) Other non-current assets (92,068 ) (246,066 ) 42,767 Trade accounts and notes payable 594,414 1,401,942 141,925 Other payables (78,997 ) 170,209 611,932 Other current liabilities 101,027 241,998 (213,738 ) Provisions (81,988 ) (154,471 ) (295,624 ) Payments of severance benefits (225,293 ) (253,207 ) (300,353 ) Plan assets (94,121 ) (186,548 ) (59,461 ) Other non-current liabilities 207,766 473,240 (306,251 ) ￦ 2,855,908 (7,044,310 ) (368,489 ) (b) Changes in liabilities arising from financial activities for the years ended December 31, 2021 and 2022 were as follows: 1) December 31, 2021 (in millions of Won) Liabilities Derivatives Short-term Long-term Dividend Finance Beginning ￦ 5,194,395 15,303,212 2,703 739,675 178,988 Changes from financing cash flows (329,897 ) 639,414 (1,327,414 ) (281,288 ) (11,338 ) Changes arising from obtaining or losing control of subsidiaries or other business — 41,359 — — — The effect of changes in foreign exchange rates 245,926 689,078 — 57,814 — Changes in fair values — (54,057 ) — — (59,668 ) Other changes: Decrease in retained earnings — — 1,259,272 — — Decrease in non-controlling interest — — 69,485 — — Interest expenses — 11,786 — 22 — Increase in lease assets — — — 261,791 — Ending ￦ 5,110,424 16,630,792 4,046 778,014 107,982 2) December 31, 2022 (in millions of Won) Liabilities Derivatives Short-term Long-term Dividend Finance Beginning ￦ 5,110,424 16,630,792 4,046 778,014 107,982 Changes from financing cash flows 1,764,569 415,692 (1,234,899 ) (268,082 ) 102,973 Changes arising from obtaining or losing control of subsidiaries or other business — 142,290 — 193,572 — The effect of changes in foreign exchange rates (41,873 ) 355,540 — (96,771 ) — Changes in fair values — (85,790 ) — — (19,458 ) Other changes: Decrease in retained earnings — — 1,138,107 — — Decrease in non-controlling interest — — 97,117 — — Interest expenses — 14,018 — 34,935 — Increase in lease assets — — — 181,814 — Ending ￦ 6,833,120 17,472,542 4,371 823,482 191,497

Operating Segments and Geograph

Operating Segments and Geographic Information	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Operating Segments and Geographic Information	41. Operating Segments and Geographic Information (a) The Company’s operating businesses are organized based on the nature of markets and customers. During the year ended December 31, 2022, the Company changed its internal organization and internal reporting structures. As a result, operating segments were re-categorized according to the revised reporting materials provided to the management for decision-making. The Company restated the reportable segment information for the years ended December 31, 2020 and 2021 to conform to the 2022 segment classifications. Segment assets, liabilities and profit (loss) are generally measured based on separate financial statements in accordance with IFRS of the subsidiaries that constitute reportable operating segments. Meanwhile the revised operating segments and their main businesses are as follows: Operating segments Main Business Steel Manufacture and sale of steel products Green infrastructure Construction Design, production and construction of steel mills and facilities, commercial and residential facilities, etc. Trading Supply and purchase transactions between domestic and foreign companies, resource development Energy and others Power generation, logistics, network and system integration business Green Materials and Energy EV battery materials such as lithium, nickel, negative/cathode materials, and hydrogen business Others POSCO HOLDINGS. INC., Controlling company and Investment business (b) Information about reportable segments as of and for the years ended December 31, 2020, 2021 and 2022 were as follows: 1) As of and for the year ended December 31, 2020 ① The segment results as previously disclosed are as follows: (in millions of Won) Steel Trading Construction Others Total External revenues ￦ 28,892,877 19,345,222 6,576,170 2,978,527 57,792,796 Internal revenues 15,365,443 12,946,803 1,033,821 2,609,941 31,956,008 Including inter segment revenue 10,545,577 6,413,835 965,409 2,442,961 20,367,782 Total revenues 44,258,320 32,292,025 7,609,991 5,588,468 89,748,804 Interest income 233,833 44,528 103,974 22,607 404,942 Interest expenses (467,767 ) (127,800 ) (60,768 ) (69,152 ) (725,487 ) Depreciation and amortization (3,040,316 ) (313,134 ) (71,144 ) (236,763 ) (3,661,357 ) Impairment loss on property, plant and equipment and others (37,623 ) (8,226 ) (32,184 ) (224 ) (78,257 ) Share of loss of equity-accounted investees, net (409,889 ) (116,074 ) (65,409 ) (17,631 ) (609,003 ) Income tax expense (77,682 ) (92,589 ) (57,178 ) (72,929 ) (300,378 ) Segment profit 711,883 157,152 150,021 293,513 1,312,569 Segment total assets 71,105,618 13,152,462 7,658,130 9,356,528 101,272,738 Investment in subsidiaries, associates and joint ventures 15,425,607 1,958,333 603,752 907,645 18,895,337 Acquisition of non-current assets 2,819,217 180,005 36,385 451,158 3,486,765 Segment total liabilities 20,976,864 8,804,555 4,260,003 4,896,040 38,937,462 ② The restated segment results due to the change of operating segments are as follows: Green infrastructure (in millions of Won) Steel Construction Trading Energy and Green materials Others Total External revenues ￦ 28,892,877 6,576,170 19,345,222 1,739,469 771,575 467,483 57,792,796 Internal revenues 15,365,443 1,033,821 12,946,803 829,141 842,113 938,687 31,956,008 Including inter segment revenue 10,545,577 965,409 6,413,835 805,270 838,099 919,085 20,487,275 Total revenues 44,258,320 7,609,991 32,292,025 2,568,610 1,613,688 1,406,170 89,748,804 Interest income 233,833 103,974 44,528 15,944 1,909 4,754 404,942 Interest expenses (467,767 ) (60,768 ) (127,800 ) (57,747 ) (7,132 ) (4,273 ) (725,487 ) Depreciation and amortization (3,040,316 ) (313,134 ) (71,144 ) (129,478 ) (68,633 ) (38,652 ) (3,661,357 ) Impairment loss on property, plant and equipment and others (37,623 ) (32,184 ) (8,226 ) (141 ) (83 ) — (78,257 ) Share of loss of equity-accounted investees, net (409,889 ) (65,409 ) (116,074 ) (17,631 ) — — (609,003 ) Income tax expense (77,682 ) (57,178 ) (92,589 ) (48,003 ) (8,123 ) (16,803 ) (300,378 ) Segment profit (loss) 711,882 150,021 157,152 178,111 50,426 64,976 1,312,569 Segment assets 71,105,618 7,658,130 13,152,462 5,121,834 2,511,066 1,723,628 101,272,738 Investment in subsidiaries, associates and joint ventures 15,425,607 603,752 1,958,333 609,725 158,560 139,360 18,895,337 Acquisition of non-current assets 2,819,217 180,005 36,385 62,243 263,646 125,269 3,486,765 Segment liabilities 20,976,864 4,260,003 8,804,555 3,035,137 1,084,585 776,318 38,937,462 2) As of and for the year ended December 31, 2021 ① The segment results as previously disclosed are as follows: (in millions of Won) Steel Trading Construction Others Total External revenues ￦ 41,093,405 25,065,608 6,398,366 3,774,966 76,332,345 Internal revenues 22,455,511 20,224,841 1,014,148 3,012,917 46,707,417 Including inter segment revenue 14,940,813 10,653,742 940,408 2,800,594 29,335,557 Total revenues 63,548,916 45,290,449 7,412,514 6,787,883 123,039,762 Interest income 179,841 30,265 72,830 35,305 318,241 Interest expenses (313,769 ) (100,419 ) (39,134 ) (61,152 ) (514,474 ) Depreciation and amortization (3,000,179 ) (343,489 ) (69,777 ) (271,898 ) (3,685,343 ) Impairment loss on property, plant and equipment and others (249,645 ) (66,157 ) (10 ) (36,774 ) (352,586 ) Share of loss of equity-accounted investees, net (261,363 ) (70,321 ) (45,778 ) (11,874 ) (389,336 ) Income tax expense (2,045,079 ) (101,622 ) (116,799 ) (66,927 ) (2,330,427 ) Segment profit 6,587,903 324,888 164,276 360,883 7,437,950 Segment total assets 80,953,507 16,373,409 8,136,549 11,923,740 117,387,205 Investment in subsidiaries, associates and joint ventures 16,567,555 2,066,688 538,484 1,195,600 20,368,327 Acquisition of non-current assets 2,194,346 478,278 10,233 928,947 3,611,804 Segment total liabilities 25,714,577 11,049,017 4,451,055 5,379,210 46,593,859 ② The restated segment results due to the change of operating segments are as follows: Green infrastructure (in millions of Won) Steel Construction Trading Energy and Green materials Others Total External revenues ￦ 41,093,405 6,398,366 25,065,608 2,061,277 1,241,957 471,732 76,332,345 Internal revenues 22,455,511 1,014,148 20,224,841 854,982 847,205 1,310,730 46,707,417 Including inter segment revenue 14,940,813 940,408 10,653,742 828,635 843,576 1,284,320 29,491,494 Total revenues 63,548,916 7,412,514 45,290,449 2,916,259 2,089,162 1,782,462 123,039,762 Interest income 179,841 72,830 30,265 12,905 19,073 3,327 318,241 Interest expenses (313,769 ) (39,134 ) (100,419 ) (47,827 ) (9,373 ) (3,952 ) (514,474 ) Depreciation and amortization (3,000,179 ) (69,777 ) (343,489 ) (142,426 ) (84,390 ) (45,082 ) (3,685,343 ) Impairment loss on property, plant and equipment and others (249,645 ) (10 ) (66,157 ) (25,270 ) (11,504 ) — (352,586 ) Share of loss of equity-accounted investees, net (261,363 ) (45,778 ) (70,321 ) (11,874 ) — — (389,336 ) Income tax expense (2,045,079 ) (116,799 ) (101,622 ) (37,970 ) (10,698 ) (18,259 ) (2,330,427 ) Segment profit 6,587,903 164,276 324,888 182,739 111,756 66,388 7,437,950 Segment assets 80,953,507 8,136,549 16,373,409 5,459,441 4,692,597 1,771,702 117,387,205 Investment in subsidiaries, associates and joint ventures 16,567,555 538,484 2,066,688 886,318 188,532 120,750 20,368,327 Acquisition of non-current assets 2,194,346 10,233 478,278 152,445 661,376 115,126 3,611,804 Segment liabilities 25,714,577 4,451,055 11,049,017 3,124,777 1,519,026 735,407 46,593,859 3) As of and for the year ended December 31, 2022 Green infrastructure (in millions of Won) Steel Construction Trading Energy and Green materials Others Total External revenues ￦ 44,546,966 7,667,696 25,955,458 3,998,959 2,451,785 129,340 84,750,204 Internal revenues 26,102,681 1,217,795 23,634,302 3,426,549 936,975 1,040,196 56,358,498 Including inter segment revenue 18,226,727 1,074,088 11,853,034 3,442,447 923,552 1,818,578 37,338,426 Total revenues 70,649,647 8,885,491 49,589,760 7,425,508 3,388,760 1,169,536 141,108,702 Interest income 141,047 68,774 37,603 23,928 22,708 (13,319 ) 280,741 Interest expenses (446,058 ) (44,309 ) (156,663 ) (56,799 ) (11,770 ) (84 ) (715,683 ) Depreciation and amortization (3,036,041 ) (64,813 ) (392,969 ) (149,754 ) (94,416 ) (20,811 ) (3,758,804 ) Impairment loss on property, plant and equipment and others (234,904 ) (32 ) (23,035 ) (292 ) (1,053 ) — (259,316 ) Share of loss of equity-accounted investees, net (6,239 ) (2,792 ) (29,541 ) (8,552 ) — (263,264 ) (310,388 ) Income tax expense (565,353 ) (92,715 ) (189,535 ) (93,210 ) (14,120 ) (1,785,487 ) (2,740,420 ) Segment profit 1,711,940 137,911 525,500 293,859 109,209 (1,087,428 ) 1,690,991 Segment assets 66,143,103 8,878,530 15,693,605 6,612,825 6,652,469 51,421,190 155,401,722 Investment in subsidiaries, associates and joint ventures 2,659,443 565,873 1,821,243 957,168 600,277 44,951,810 51,555,814 Acquisition of non-current assets 3,287,878 53,708 622,678 125,942 1,169,725 370,837 5,630,768 Segment liabilities 25,111,665 4,937,907 10,097,503 3,683,068 2,127,424 4,156,863 50,114,430 (c) Reconciliations of total segment revenues, profit or loss, assets and liabilities, and other significant items to their respective consolidated financial statement line items are as follows: 1) Revenues (in millions of Won) 2020 2021 2022 Total revenue for reportable segments ￦ 89,748,804 123,039,762 141,108,702 Elimination of inter-segment revenue (31,956,008 ) (46,707,417 ) (56,358,498 ) Basis difference(*2) (326,118 ) (323,144 ) 253,412 ￦ 57,466,678 76,009,201 85,003,616 2) Profit (in millions of Won) 2020 2021 2022 Total profit for reportable segments ￦ 1,312,569 7,437,950 1,690,991 Goodwill and corporate FV adjustments (74,685 ) (62,500 ) (68,771 ) Elimination of inter-segment profit(Loss) 550,268 (179,560 ) 1,938,263 Income tax expense 236,934 2,220,183 453,883 Basis difference(*2) (52,322 ) (26,264 ) 33,125 Profit before income tax expense ￦ 1,972,764 9,389,809 4,047,491 3) Assets (in millions of Won) 2021 2022 Total assets for reportable segments(*1) ￦ 117,387,205 155,401,722 Equity-accounted investees (15,532,200 ) (46,559,264 ) Goodwill and corporate FV adjustments 2,411,729 2,366,408 Elimination of inter-segment assets (12,795,120 ) (12,802,085 ) Basis difference(*2) 827,276 614,969 ￦ 92,298,890 99,021,750 (*1) As segment assets and liabilities are determined based on separate financial statements, the carrying amount of assets of subsidiaries, which are in a different segment from that of their immediate parent company, in the separate financial statements the immediate parent company is eliminated upon consolidation. In addition, the amount of investment in associates and joint ventures are adjusted from the amount reflected in segment assets to that determined using equity method in consolidated financial statements. 4) Liabilities (in millions of Won) 2021 2022 Total liabilities for reportable segments ￦ 46,593,859 50,114,430 Corporate FV adjustments 236,833 215,760 Elimination of inter-segment liabilities (10,164,021 ) (10,180,810 ) Basis difference(*2) 918,253 680,473 ￦ 37,584,924 40,829,853 5) Other significant items a) December 31, 2020 (in millions of Won) Total segment Goodwill and Elimination of inter-segment Basis Consolidated Interest income ￦ 404,942 — (32,768 ) — 372,174 Interest expenses (725,487 ) 806 85,884 — (638,797 ) Depreciation and amortization (3,661,357 ) (102,385 ) 142,002 — (3,621,740 ) Share of profit of equity-accounted investees, net (609,003 ) — 742,300 — 133,297 Income tax expense (300,378 ) 27,655 35,789 12,662 (224,272 ) Impairment loss on property, plant and equipment and others (78,257 ) (761 ) (150,828 ) — (229,846 ) ￦ (4,969,540 ) (74,685 ) 822,379 12,662 (4,209,184 ) b) December 31, 2021 (in millions of Won) Total segment Goodwill and Elimination of inter-segment Basis Consolidated Interest income ￦ 318,241 — (25,998 ) — 292,243 Interest expenses (514,474 ) 605 74,043 — (439,826 ) Depreciation and amortization (3,685,343 ) (88,927 ) 194,824 — (3,579,446 ) Share of profit of equity-accounted investees, net (389,336 ) — 1,038,905 — 649,569 Income tax expense (2,330,427 ) 25,719 84,525 6,356 (2,213,827 ) Impairment loss on property, plant and equipment and others (352,586 ) — (183,262 ) — (535,848 ) ￦ (6,953,925 ) (62,603 ) 1,183,037 6,356 (5,827,135 ) c) December 31, 2022 (in millions of Won) Total segment Goodwill and Elimination of inter-segment Basis Consolidated Interest income ￦ 280,741 — (33,736 ) — 247,005 Interest expenses (715,683 ) — 108,225 — (607,458 ) Depreciation and amortization (3,758,804 ) (95,195 ) 166,378 — (3,687,621 ) Share of profit of equity-accounted investees, net (310,388 ) — 986,648 — 676,260 Income tax expense (2,740,420 ) 25,803 2,260,734 (7,651 ) (461,534 ) Impairment loss on property, plant and equipment and others (259,316 ) — (324,529 ) — (583,845 ) ￦ (7,503,870 ) (69,392 ) 3,163,720 (7,651 ) (4,417,193 ) (*2) Basis difference is related to the differences in recorded revenue and expenses for development and sale of certain residential real estates between the report reviewed by management and the consolidated financial statements. (d) Revenue by geographic area for the years ended December 31, 2020, 2021 and 2022 was as follows: (in millions of Won) 2020 2021 2022 Domestic ￦ 36,806,651 49,732,699 54,519,647 Japan 1,788,839 2,200,855 2,651,584 China 7,238,063 7,146,695 7,430,619 Asia-other 7,897,041 11,425,513 12,614,612 North America 1,308,943 2,083,309 2,413,054 Others 2,753,259 3,743,274 5,120,688 57,792,796 76,332,345 84,750,204 Basis difference (326,118 ) (323,144 ) 253,412 ￦ 76,009,201 85,003,616 The information on geography, segment revenue is presented based on the geographical location of customers. (e) Non-current assets by geographic area as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Domestic ￦ 27,806,262 28,623,582 Japan 155,556 139,636 China 1,175,593 1,199,461 Asia-other 4,198,982 4,768,410 North America 313,356 323,543 Others 1,199,335 2,639,045 ￦ 34,849,084 37,693,677 Non-current assets by geographic area include investment property, property, plant and equipment, goodwill and other intangible assets. (f) There are no customers whose revenue is 10% or more of the consolidated revenue.

Business combination

Business combination	12 Months Ended
	Dec. 31, 2022
Disclosure of detailed information about business combination [abstract]
Business combination	42. Business combination During the year ended December 31, 2022, the Company’s subsidiary Senex Holdings Pty Ltd acquired 100% shares in Senex Energy Limited as of April 1, 2022. The acquisition was made to operate a land gas field production and development project in Queensland, eastern Australia, with the expectation of securing natural gas reserves and expanding the Company’s The fair value of the identifiable assets acquired and liabilities assumed as of the acquisition date is as follows: (in millions of Won) April 1, 2022 Assets Cash and cash equivalents ￦ 39,967 Trade accounts, notes receivable and other receivables, net 21,455 Inventories 12,693 Other current assets 3,054 Total current assets 77,169 Other long-term financial assets 1,257 Property, plant and equipment, net 244,058 Intangible assets, net 1,011,517 Total non-current assets 1,256,832 Total assets ￦ 1,334,001 Liabilities Trade accounts and notes payable ￦ 78,027 Short-term borrowings 71,959 Other short-term financial liabilities 14,471 Provisions 343 Other current liabilities 21,544 Total current liabilities 186,344 Other payables 181,913 Long-term borrowings 68,034 Other long-term financial liabilities 1,553 Other non-current liabilities 70,982 Long-term provisions 24,115 Total non-current liabilities 346,597 Total liabilities ￦ 532,941 Net assets 801,060 Share acquisition ratio (%) 100 Net assets acquired 801,060 Consideration paid 801,060 Had Senex Energy Limited been acquired on January 1, 2022, the Company’s revenue and net income would have been ￦ ￦ ￦ ￦ ￦ ￦

Events after the Reporting Peri

Events after the Reporting Period	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Disclosure of events after reporting period [text block]	43. Events after the Reporting Period (a) On January 12, 2023, POSCO, a subsidiary, issued the 313-1st non-guaranteed bonds (issued amount ￦ ￦ 313-3rd non-guaranteed bonds (issued amount ￦ (b) On March 17, 2023, at the annual general meeting of shareholders of POSCO HOLDINGS INC., the shareholders approved the annual dividend of ￦ ￦

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Basis of consolidation	Basis of consolidation (a) Business combinations The Company accounts for business combinations using the acquisition method when the acquired set of activities and assets meets the definition of a business and control is transferred to the Company. In determining whether a particular set of activities and assets is a business, the Company assesses whether the set of assets and activities acquired includes, at a minimum, an input and substantive process and whether the acquired set has the ability to produce outputs. The Company has an option to apply a ‘concentration test’ that permits a simplified assessment of whether an acquired set of activities and assets is not a business. The optional concentration test is met if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets. The consideration transferred in the acquisition is generally measured at fair value, as are the identifiable net assets acquired. Any goodwill that arises is tested annually for impairment. Any gain on bargain purchase is recognized in profit or loss immediately. Transaction costs are expensed as incurred, except if related to the issue of debt or equity securities. The consideration transferred does not include amounts related to the settlement of pre-existing Any contingent consideration payable is measured at fair value at the acquisition date. If the contingent consideration is classified as equity, then it is not remeasured and settlement is accounted for within equity. Otherwise, subsequent changes in the fair value of the contingent consideration are recognized in profit or loss. If share-based payment awards (replacement awards) are required to be exchanged for awards held by the acquiree’s employees (acquiree’s awards), then all or a portion of the amount of the acquirer’s replacement awards is included in measuring the consideration transferred in the business combination. This determination is based on the market-based measure of the replacement awards compared with the market-based measure of the acquiree’s awards and the extent to which the replacement awards relate to pre-combination (b) Non-controlling Non-controlling (c) Subsidiaries Subsidiaries are entities controlled by the Company. The Company controls an entity when it is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. The financial statements of subsidiaries are included in the consolidated financial statements from the date on which control commences until the date on which control ceases. (d) Loss of control When the Company loses control over a subsidiary, it derecognizes the assets and liabilities of the subsidiary, and any related non-controlling (e) Interests in equity-accounted investees The Company’s interests in equity-accounted investees comprise interests in associates and joint ventures. Associates are those entities in which the Company has significant influence, but not control or joint control, over the financial and operating policies. A joint venture is an arrangement in which the Company has joint control, whereby the Company has rights to the net assets of the arrangement, rather than rights to its assets and obligations for its liabilities. Interests in associates and joint ventures are accounted for using the equity method. They are recognized initially at cost, which includes transaction costs. Subsequent to initial recognition, the consolidated financial statements include the Company’s share of the profit or loss and other comprehensive income of equity-accounted investees, until the date on which significant influence or joint control ceases. (f) Transactions eliminated on consolidation Intra-group balances and transactions, and any unrealized income and expenses arising from intra-group transactions, are eliminated. Unrealized gains arising from transactions with equity-accounted investees are eliminated against the investment to the extent of the Company’s interest in the investee. Unrealized losses are eliminated in the same way as unrealized gains, but only to the extent that there is no evidence of impairment.
Foreign currency transactions and translation	Foreign currency transactions and translation (a) Foreign currency transactions Foreign currency transactions are initially recorded using 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. Non-monetary Exchange differences arising on the settlement of monetary items or on translating monetary items at rates different from those at which they were translated on initial recognition during the period or in previous period end are recognized in profit or loss in the period in which they arise. When gains or losses on non-monetary non-monetary (b) Foreign operations If the presentation currency of the Company is different from a foreign operation’s functional currency, the financial statements of the foreign operation are translated into the presentation currency using the following methods: The assets and liabilities of foreign operations, whose functional currency is not the currency of a hyperinflationary economy, are translated to presentation currency using exchange rates at the reporting date. The income and expenses of foreign operations are translated to functional currency at exchange rates at the dates of the transactions. Foreign currency 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 translated to the presentation currency at the closing rate. When a foreign operation is disposed of, the relevant amount in the translation is transferred to profit or loss as part of the profit or loss on disposal. On the partial disposal of a subsidiary that includes a foreign operation, the relevant proportion of such cumulative amount is reattributed to non-controlling Foreign exchange gains or losses arising from a monetary item receivable from or payable to a foreign operation, the settlement of which is neither planned nor likely to occur in the foreseeable future and which in substance is considered to form part of the net investment in the foreign operation, are recognized in other comprehensive income in the translation reserve.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents comprise cash on hand, demand deposits, and short-term investments in highly liquid securities that are readily convertible to known amounts of cash with maturities of three months or less from the acquisition date and which are subject to an insignificant risk of changes in value. Equity investments are excluded from cash and cash equivalents.
Non-derivative financial assets	Non-derivative Trade receivables and debt securities issued are initially recognized when they are originated. All other financial assets are initially recognized when the Company becomes a party to the contractual provisions of the instruments. A financial asset (unless it is a trade receivable without a significant financing component) is initially measured at fair value plus, for an item not at financial assets measured at fair value through profit or loss, transaction costs that are directly attributable to its acquisition or issue. A trade receivable without a significant financing component is initially measured at the transaction price. On initial recognition, a financial asset is classified as measured at amortized cost, debt instruments measured at fair value through other comprehensive income, equity instruments measured at fair value through other comprehensive income or financial assets measured at fair value through profit or loss. Financial assets are not reclassified subsequent to their initial recognition unless the Company changes its business model for managing financial assets, in which case all affected financial assets are reclassified on the first day of the reporting period following the change in the business model. (a) Financial assets measured at amortized cost A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at fair value through profit or loss. • it is held within a business model whose objective is to hold assets to collect contractual cash flows, and • its contractual terms give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Financial assets measured at amortized cost are subsequently measured at amortized cost using the effective interest method. The amortized cost is reduced by impairment losses. Interest income, gains and losses on foreign currency translation and impairment losses are recognized in profit or loss. Any gain or loss on derecognition is recognized in profit or loss. (b) Debt instruments measured at fair value through other comprehensive income A debt instrument is measured at fair value through other comprehensive income if it meets both of the following conditions and is not designated as at fair value through profit or loss. • it is held within a business model whose objective is achieved by both collection contractual cash flows and selling financial assets, and • its contractual terms give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Debt instruments measured at fair value through other comprehensive income are subsequently measured at fair value. Interest income which is calculated using the effective interest method, gains and losses from foreign currency translation and impairment losses are recognized in profit or loss and other net profit or loss is recognized in other comprehensive income. At the time of elimination, other accumulated comprehensive income is reclassified to profit or loss. (c) Equity instruments measured at fair value through other comprehensive income On initial recognition of an equity investment that is not held for trading, the Company may irrevocably elect to present subsequent changes in the investment’s fair value in other comprehensive income. This election is made on an investment-by-investment Equity instruments measured at fair value through other comprehensive income are subsequently measured at fair value. Dividends are recognized as income in profit or loss unless the dividend clearly represents a recovery of part of the cost of the investment. Other net gains and losses are recognized in other comprehensive income and never reclassified to profit or loss. (d) Financial assets measured at fair value through profit or loss All financial assets not classified as measured at amortized cost or fair value through other comprehensive income as described above are measured at fair value through profit or loss. This includes all derivative financial assets. On initial recognition, the Company may irrevocably designate a financial asset that otherwise meets the requirements to be measured at amortized cost or fair value through other comprehensive income as at fair value through profit or loss if doing so eliminates or significantly reduces an accounting mismatch that would otherwise arise. Financial assets measured at fair value through profit or loss are subsequently measured at fair value. Net gains and losses, including any interest or dividend income, are recognized in profit or loss. (e) Derecognition of financial assets Financial assets are derecognized when the rights to receive cash flows from the financial assets have expired or have been transferred and the Company has transferred substantially all the risks and rewards of ownership. If a transfer does not result in derecognition because the Company has retained substantially all the risks and rewards of ownership of the transferred asset, the Company continues to recognize the transferred asset in its entirety and recognizes a financial liability for the consideration received. (f) Offsetting a financial asset and a financial liability Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statement of financial position only when the Company currently has a legally enforceable right to offset the recognized amounts, and there is the intention to settle on a net basis or to realize the asset and settle the liability simultaneously.
Inventories	Inventories Inventory costs, except materials-in-transit Inventories are measured at the lower of cost or net realizable value. The amount of any write-down of inventories to net realizable value and all losses of inventories are recognized as an expense in the period the write-down or loss occurs. The amount of any reversal of any write-down of inventories arising from an increase in net realizable value is recognized as a reduction in the amount of inventories recognized as cost of goods sold in the period in which the reversal occurs. The carrying amount of those inventories sold is recognized as cost of goods sold in the period in which the related revenue is recognized.
Non-current assets held for sale	Non-current Non-current non-current The Company recognizes an impairment loss for any initial or subsequent write-down of an asset or disposal group to fair value less costs to sell, and a gain for any subsequent increase in fair value less costs to sell, up to the cumulative impairment loss previously recognized. A non-current
Investment property	Investment property Property held to earn rentals or for capital appreciation or both is classified as investment property. Investment property is measured initially at its cost. Transaction costs are included in the initial measurement. Subsequently, investment property is carried at depreciated cost less any accumulated impairment losses. Subsequent costs are recognized in the carrying amount of investment property at cost or, if appropriate, as separate items if it is probable that future economic benefits associated with the item will flow to the Company and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. The costs of the day-to-day Depreciation methods, useful lives and residual values are reviewed at the end of each reporting date and adjusted, if appropriate. The change is accounted for as a change in an accounting estimate.
Property, plant and equipment	Property, plant and equipment Property, plant and equipment are initially measured at cost and after initial recognition, are carried at cost less accumulated depreciation and any accumulated impairment losses. The cost of property, plant and equipment includes expenditures arising directly from the construction or acquisition of the asset, 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, when the Company has an obligation to remove the asset or restore the site, an estimate of the costs of dismantling and removing the item and restoring the site on which it is located. The cost of replacing a part of an item is recognized in the carrying amount of the item of property, plant and equipment, if the following recognition criteria are met: (a) it is probable that future economic benefits associated with the item will flow to the Company, and (b) the cost can be measured reliably. The carrying amount of the replaced part is derecognized at the time the replacement part is recognized. The costs of the day-to-day Items of property, plant and equipment are depreciated from the date they are available for use or, in respect of self-constructed assets, from the date that the asset is completed and ready for use. Other than land, the costs of an asset less its estimated residual value are depreciated. Depreciation of property, plant and equipment is recognized in profit or loss on a straight-line basis, which most closely reflects the expected pattern of consumption of the future economic benefits embodied in the asset, over the estimated useful lives of each component of an item of property, plant and equipment. Land is not depreciated. Each part of an item of property, plant and equipment with a cost that is significant in relation to the total cost of the item is depreciated separately. The gain or loss arising from the derecognition of an item of property, plant and equipment is included in profit or loss when the item is derecognized. The estimated useful lives of property, plant and equipment are as follows: Buildings 5-50 years Structures 4-50 Machinery and equipment 4-25 Vehicles 3-20 Tools 3-10 Furniture and fixtures 3-20 Lease assets 2-30 Bearer plants 20 years The estimated residual value, useful lives and the depreciation method are reviewed at least at the end of each reporting period and, if expectations differ from previous estimates, the changes are accounted for as changes in accounting estimates.
Borrowing costs	Borrowing costs The Company capitalizes borrowing costs directly attributable to the acquisition, construction or production of a qualifying asset as part of the cost of that asset. Other borrowing costs are recognized in expense as incurred. A qualifying asset is an asset that requires a substantial period of time to get ready for its intended use or sale. Financial assets and inventories that are manufactured or otherwise produced over a short period of time are not qualifying assets. Assets that are ready for their intended use or sale when acquired are not qualifying assets. To the extent that the Company borrows funds specifically for the purpose of obtaining a qualifying asset, the Company determines the amount of borrowing costs eligible for capitalization as the actual borrowing costs incurred on that borrowing during the period less any investment income on the temporary investment of those borrowings. The Company immediately recognizes other borrowing costs as an expense. To the extent that the Company borrows funds generally and uses them for the purpose of obtaining a qualifying asset, the Company shall determines the amount of borrowing costs eligible for capitalization by applying a capitalization rate to the expenditures on that asset. The capitalization rate is the weighted average of the borrowing costs applicable to the borrowings of the Company that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. The amount of borrowing costs that the Company capitalizes during a period does not exceed the amount of borrowing costs incurred during that period.
Intangible assets	Intangible assets Intangible assets are measured initially at cost and, subsequently, are carried at cost less accumulated amortization and accumulated impairment losses. Amortization of intangible assets except for goodwill is calculated on a straight-line basis over the estimated useful lives of intangible assets from the date that they are available for use. The residual value of intangible assets is zero. However, as there are no foreseeable limits to the periods over which club memberships are expected to be available for use, this intangible asset is determined as having an indefinite useful life and not amortized. Intellectual property rights 4-25 years Development expense 3-5 Port facilities usage rights 4-75 Other intangible assets 2-15 Amortization periods and the amortization methods for intangible assets with finite useful lives are reviewed at the end of each reporting period. The useful lives of intangible assets that are not being amortized are reviewed at the end of each reporting period to determine whether events and circumstances continue to support indefinite useful life assessments for those assets. Changes are accounted for as changes in accounting estimates. Expenditures on research activities, undertaken with the prospect of gaining new scientific or technical knowledge and understanding, are recognized in profit or loss as incurred. Development expenditures are capitalized only if development costs can be measured reliably, the product or process is technically and commercially feasible, future economic benefits are probable, and the Company intends to and has sufficient resources to complete development and to use or sell the asset. Other development expenditures are recognized in profit or loss as incurred. Subsequent expenditures are capitalized only when they increase the future economic benefits embodied in the specific asset to which they relate. All other expenditures, including expenditures on internally generated goodwill and brands, are recognized in profit or loss as incurred.
Exploration for and evaluation of mineral resources	Exploration for and evaluation of mineral resources POSCO HOLDINGS INC. is engaged in exploration projects for mineral resources through subsidiaries, associates and joint ventures or other contractual arrangements. Expenditures related to the development of mineral resources are recognized as exploration or development intangible assets. The nature of these intangible assets are as follows: (a) Exploration and evaluation assets Exploration and evaluation assets consist of expenditures for topographical studies, geophysical studies and trenching. These assets are reclassified as development assets when it is proved that the exploration has identified commercially viable mineral deposit. (b) Development assets When proved reserves are determined and development is sanctioned, development expenditures incurred are capitalized. These expenditures encompass the evaluation of oil fields, the construction of oil and gas wells, drilling for feasibility and other related activities. Upon completion of development and inception of extraction for commercial production of developed proved reserves, the development assets are reclassified as either property, plant and equipment or as intellectual property rights (mining rights) under intangible assets based on the nature of the capitalized expenditures. The respective property, plant and equipment and intellectual property (mining rights) are each depreciated and amortized based on proved reserves on a unit of production basis.
Government grants	Government grants Government grants are not recognized unless there is reasonable assurance that the Company will comply with the grant’s conditions and that the grant will be received. (a) Grants related to assets Government grants whose primary condition is that the Company purchase, construct or otherwise acquire long-term assets are deducted from the carrying amount of the assets and recognized in profit or loss on a systematic and rational basis over the life of the depreciable assets. (b) Grants related to income Government grants which are intended to compensate the Company for expenses incurred are deducted from the related expenses.
Leases	Leases A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for considerations. 1) As a lessee At inception or reassessment of a contract that contains a lease component, the Company allocates the consideration in the contract to each lease and non-lease The Company recognizes a right-of-use right-of-use The right-of-use right-of-use right-of-use right-of-use The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined the Company’s incremental borrowing rate. Generally, the Company uses its incremental borrowing rate as the discount rate. The Company determines its incremental borrowing rate by obtaining interest rates from various external sources and makes certain adjustments to reflect the terms of the lease and type of the asset leased. Lease payments included in the measurement of the lease liability comprise the followings: • fixed payments • variable lease payments that depend on an index or a rate • amounts expected to be payable under a residual value guarantee; and • the exercise price under a purchase option that the Company’s is reasonably certain to exercise, lease payments in an optional renewal period if the Company is reasonably certain to exercise an extension option, and penalties for early termination of a lease unless the Company is reasonably certain not to terminate early. The lease liability is measured at amortized cost using the effective interest method. When the lease liability is remeasured in this way, a corresponding adjustment is made to the carrying amount of the right-of-use right-of-use • a revised in-substance • a change in future lease payments arising from a change in an index or rate, • a change in the Company’s estimate of the amount expected to be payable under a residual value guarantee, or • a change in the Company’s assessment of whether it will exercise a purchase, extension or termination option The Company presents right-of-use The Company has elected not to recognize right-of-use low-value 2) As a lessor At inception or the effective date of a modification that contains a lease component, the Company allocates the consideration in the contract to each lease component on the basis of their relative stand-alone prices. When the Company acts as a lessor, it determines at lease inception whether each lease is a finance lease or an operating lease. To classify each lease, the Company makes an overall assessment of whether the lease transfers substantially all of the risks and rewards incidental to ownership of the underlying asset. If this is the case, then the lease is a finance lease; if not, then it is an operating lease. As part of this assessment, the Company considers certain indicators such as whether the lease is for the major part of the economic life of the asset. The Company leases out its investment properties. The Company classifies these leases as operating leases. The Company provides subleases certain leased vessels and others .
Impairment for financial assets	Impairment for financial assets The Company recognizes loss allowances for expected credit losses on: • financial assets measured at amortized cost; • debt instruments measured at fair value through other comprehensive income; and • lease receivables, contractual assets, loan commitments, and financial guarantee contracts If credit risk has increased significantly since the initial recognition, a loss allowance for lifetime expected credit loss is measured at the end of every reporting period. If credit risk has not increased significantly since the initial recognition, a loss allowance is measured based on 12-month If the financial instrument has low credit risk at the end of the reporting period, the Company may assume that the credit risk has not increased significantly since initial recognition. However, a loss allowance for lifetime expected credit losses is measured for contract assets or trade receivables that do not contain a significant financing component. (a) Judgments on credit risk When determining whether the credit risk of a financial asset has increased significantly since initial recognition and when estimating expected credit losses, the Company considers reasonable and supportable information that is relevant and available without undue cost or effort. This includes both quantitative and qualitative information and analysis, based on the Company’s historical experience and informed credit assessment including forward-looking information. The Company assumes that the credit risk on a financial asset has increased significantly if it is more than 30 days past due. The Company considers a financial asset to be in default when the borrower is unlikely to pay its credit obligations to the Company in full, without recourse by the Company to actions such as realizing security (if any is held). The Company considers a debt security to have low credit risk when its credit risk rating is equivalent to investment grade defined by reliable credit rating agencies. (b) Measurement of expected credit losses Lifetime expected credit losses are the expected credit losses that result from all possible default events over the expected life of a financial instrument. 12-month Expected credit losses are a probability-weighted estimate of credit losses. Credit losses are measured as the present value of all cash shortfalls such as the difference between the cash flows due to the entity in accordance with the contract and the cash flows that the Company expects to receive. Expected credit losses for financial assets measured at amortized cost are recognized in profit or loss. Loss allowances for financial assets measured at amortized cost are deducted from carrying amount of the assets. For debt instruments measured at fair value through other comprehensive income, the loss allowance is charged to profit or loss and is recognized in other comprehensive income. (c) Credit-impaired financial assets At each reporting date, the Company assesses whether financial assets measured at amortized cost and debt instrument measured at fair value through other comprehensive income are credit-impaired. A financial asset is ‘credit-impaired’ when one or more events that have a detrimental impact on the estimated future cash flows of the financial asset have occurred. Objective evidence that a financial asset or group of financial assets are impaired includes: • significant financial difficulty of the issuer or borrower • a breach of contract, such as a default or delinquency in interest or principal payments • the lender, for economic or legal reasons relating to the borrower’s financial difficulty, granting to the borrower a concession that the lender would not otherwise consider • becoming probable that the borrower will enter bankruptcy or other financial reorganization • the disappearance of an active market for that financial asset because of financial difficulties (d) Write-off The gross carrying amount of a financial asset is written off when the Company has no reasonable expectations of recovering a financial asset in entirety or a portion. The Company individually makes an assessment with respect to the timing and amount of write-off
Impairment for non-financial assets	Impairment for non-financial The carrying amounts of the Company’s non-financial non-current Goodwill and intangible assets that have indefinite useful lives or that are not yet available for use, irrespective of whether there is any indication of impairment, are tested for impairment annually by comparing their recoverable amount to their carrying amount. Management estimates the recoverable amount of an individual asset. If it is not feasible to measure the individual recoverable amount of an asset, then management estimates the recoverable amount of cash-generating unit (“CGU”). A CGU 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 Company determined that individual operating entities are CGUs. The recoverable amount of an asset or CGU is the greater of its value-in-use value-in-use pre-tax An impairment loss is recognized if the carrying amount of an asset or a CGU exceeds its recoverable amount. Impairment losses are recognized in profit or loss. Goodwill acquired in a business combination is allocated to each CGU that is expected to benefit from the synergies arising from the goodwill acquired. Any impairment identified at the CGU level will first reduce the carrying amount of goodwill and then be used to reduce the carrying amount of the other assets in the CGU on a pro rata basis. Except for impairment losses in respect of goodwill which are never reversed, an impairment loss is reversed if there has been a change in the estimates used to determine the recoverable amount. An impairment loss is reversed only to the extent that the asset’s carrying amount does not exceed the carrying amount that would have been determined, net of depreciation or amortization, if no impairment loss had been recognized.
Derivative financial instruments, including hedge accounting	Derivative financial instruments, including hedge accounting Derivatives are initially recognized at fair value. Subsequent to initial recognition, derivatives are measured at fair value, and changes therein are recognized as describe below. (a) Hedge accounting The Company holds forward exchange contracts, currency swaps and commodity future contracts to manage foreign exchange risk and commodity fair value risk. The Company designated derivatives as hedging instruments to hedge the risk of changes in the fair value of assets, liabilities or firm commitments (a fair value hedge) and foreign currency risk of highly probable forecasted transactions or firm commitments (a cash flow hedge). On initial designation of the hedge, the Company formally documents the relationship between the hedging instruments and hedged items, including the risk management objectives and strategy in undertaking the hedge transaction, together with the methods that will be used to assess the effectiveness of the hedging relationship. ① Fair value hedge Changes in the fair value of a derivative hedging instrument designated as a fair value hedge are recognized in profit or loss. The gain or loss from remeasuring the hedging instrument at fair value for a derivative hedging instrument and the gain or loss on the hedged item attributable to the hedged risk are recognized in profit or loss in the same line item of the consolidated statement of comprehensive income. The Company discontinues fair value hedge accounting if the hedging instrument expires or is sold, terminated or exercised, or if the hedge no longer meets the criteria for hedge accounting. Any adjustment arising from gain or loss on the hedged item attributable to the hedged risk is amortized to profit or loss from the date the hedge accounting is discontinued. ② Cash flow hedge When a derivative is designated to hedge the variability in cash flows attributable to a particular risk associated with a recognized asset or liability or a highly probable forecasted transaction that could affect profit or loss, the effective portion of changes in the fair value of the derivative is recognized in other comprehensive income, net of tax, and presented in the hedging reserve in equity. Any ineffective portion of changes in the fair value of the derivative is recognized immediately in profit or loss. If the hedging instrument no longer meets the criteria for hedge accounting, expires or is sold, terminated, exercised, or the designation is revoked, then hedge accounting is discontinued prospectively. The cumulative gain or loss on the hedging instrument that has been recognized in other comprehensive income is reclassified to profit or loss in the periods during which the forecasted transaction occurs. If the forecasted transaction is no longer expected to occur, then the balance in other comprehensive income is recognized immediately in profit or loss. (b) Other derivatives Changes in the fair value of a derivative that is not designated as a hedging instrument are recognized immediately in profit or loss.
Non-derivative financial liabilities	Non-derivative The Company classifies non-derivative (a) Financial liabilities measured at fair value through profit or loss A financial liability is classified as at fair value through profit or loss if it is classified as held-for-trading, (b) Financial liabilities measured at amortized cost Non-derivative (c) Derecognition of financial liabilities The Company derecognizes a financial liability when its contractual obligations are discharged or cancelled, or expired. The Company also derecognizes a financial liability when its terms are modified and the cash flows of the modified liability are substantially different, in which case a new financial liability based on the modified terms is recognized at fair value. On derecognition of a financial liability, the difference between the carrying amount extinguished and the consideration paid (including any non-cash
Construction work in progress	Construction work in progress The gross amount due from customers for contract work is presented for all contracts in which profits multiply cumulative percentage-of-completion percentage-of-completion, The Company accounts for the remaining rights and performance obligation on the contract with each customer on a net basis. Due from customers for contract work and due to customers for contract work for a contract are offset and presented on a net basis.
Employee benefits	Employee benefits (a) Short-term employee benefits Short-term employee benefits are employee benefits that are due to be settled within 12 (b) Other long-term employee benefits Other long-term employee benefits include employee benefits that are settled beyond 12 months after the end of the period in which the employees render the related service, and are calculated at the present value of the amount of future benefit that employees have earned in return for their service in the current and prior periods, less the fair value of any related assets. Any actuarial gains and losses are recognized in profit or loss in the period in which they arise. (c) Retirement benefits: Defined contribution plans For defined contribution plans, when an employee has rendered service to the Company during a period, the Company recognizes the contribution payable to a defined contribution plan in exchange for that service as an accrued expense, after deducting any contributions already paid. If the contributions already paid exceed the contribution due for service before the end of the reporting period, the Company recognizes that excess as an asset (prepaid expense) to the extent that the prepayment will lead to a reduction in future payments or a cash refund. (d) Retirement benefits: Defined benefit plans A defined benefit plan is a post-employment benefit plan other than a defined contribution plan. The Company’s net obligation in respect of defined benefit plans is calculated by estimating the amount of future benefit that employees have earned in return for their service in the current and prior periods; that benefit is discounted to determine its present value. The fair value of plan assets is deducted. The calculation is performed annually by an independent actuary using the projected unit credit method. The discount rate is the yield at the reporting date on corporate bonds that have maturity dates approximating the terms of the Company’s obligations and that are denominated in the same currency in which the benefits are expected to be paid. The Company recognizes all actuarial gains and losses arising from actuarial assumption changes and experiential adjustments in other comprehensive income when incurred. When the fair value of plan assets exceeds the present value of the defined benefit obligation, the Company recognizes an asset, to the extent of the present value of the total of cumulative any economic benefits available in the form of refunds from the plan or reduction in the future contributions to the plan. Remeasurements of net defined benefit liabilities, which comprise actuarial gains and losses, the return on plan assets (excluding interest) and the effect of the asset ceiling (if any, excluding interest), are recognized immediately in other comprehensive income. The Company determines the net interest expense (income) on the net defined benefit liability (asset) for the period by applying the discount rate used to measure the defined benefit obligation at the beginning of the annual period to the then-net When the benefits of a plan are changed or when a plan is curtailed, the resulting change in benefit that relates to past service or the gain or loss in curtailment is recognized immediately in profit or loss. The Company recognizes gains and losses on the settlement of a defined benefit plan when the settlement occurs.
Provisions	Provisions Provisions are recognized when the Company has a present legal or constructive obligation as a result of a past event, 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. The risks and uncertainties that inevitably surround events and circumstances are taken into account in reaching the best estimate of a provision. Where the effect of the time value of money is material, provisions are determined at the present value of the expected future cash flows. Where some or all of the expenditures required to settle a provision are expected to be reimbursed by another party, the reimbursement is recognized when, and only when, it is virtually certain that reimbursement will be received if the entity settles the obligation. The reimbursement is treated as a separate asset. Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimates. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provision is reversed. A provision for warranties is recognized when the underlying products or services are sold and estimated based on historical warranty data and a weighting of possible outcomes against their associated probabilities. Regarding provision for construction warranties, warranty period starts from the completion of construction in accordance with construction contracts. If the Company has an obligation for warranties, provision for warranties which are estimated based on historical warranty data are recorded as cost of construction during the construction period. If the estimated total contract cost of the construction contract exceeds the total contract revenue, the estimated contract cost exceeding the contract revenue is recognized as a provision for construction losses for incomplete construction projects. A provision for restoration regarding contamination of land is recognized in accordance with the Company’s announced Environment Policy and legal requirement as needed. A provision is used only for expenditures for which the provision was originally recognized.
Emission Rights	Emission Rights The Company accounts for greenhouse gases emission right and the relevant liability as follows pursuant to the Act on Allocation and Trading of Greenhouse Gas Emission which became effective in Korea in 2015. (a) Greenhouse Gases Emission Right Greenhouse Gases Emission Right consists of emission allowances which are allocated from the government free of charge and those purchased from the market. The cost includes any directly attributable costs incurred during the normal course of business. Emission rights held for the purpose of performing the obligation are classified as intangible asset. They are initially measured at cost and subsequently carried at cost less accumulated impairment losses. The Company derecognizes an emission right asset when the emission allowance becomes unusable, is disposed of or submitted to government, and where future economic benefits are no longer expected to be probable. (b) Emission liability Emission liability is a present obligation to submit emission rights to the government for the emission of greenhouse gas. It is recognized when there is a high possibility of outflows of resources in performing the obligation and the associated costs can be estimated reliably. The emission liability represents the estimated obligation for submission of emission rights to the government during the performance period. It is measured based on the expected quantity of emission during the performance period in excess of the available emission allowance and the market unit price of such emission rights at the end of the reporting period. The emission liability is derecognized when the emissions rights are submitted to the government.
Equity instruments	Equity instruments (a) Share capital Common stock is classified as equity and the incremental costs directly attributable to the issuance of common stock less their tax effects are deducted from equity. If the Company reacquires its own equity instruments, the amount of those instruments (“treasury shares”) are presented as a contra-equity account. No gain or loss is recognized in profit or loss on the purchase, sale, issuance or cancellation of its own equity instruments. When treasury shares are sold or reissued subsequently, the amount received is recognized as an increase to equity, and the resulting surplus or deficit on the transaction is recorded in capital surplus. (b) Hybrid Bonds Debt and equity instruments issued by the Company are classified as either financial liabilities or as equity in accordance with the substance of the contractual arrangements and the definitions of financial liability and equity. When the Company has an unconditional right to avoid delivering cash or other financial asset to settle a contractual obligation, the instruments are classified as equity instruments.
Revenue from contracts with customers	Revenue from contracts with customers Revenue is measured based on the consideration promised in the contract with the customer. The Company recognizes revenue when the control over a good or service is transferred to the customer. The following are the revenue recognition policies for performance obligations in the contracts with customers in accordance with IFRS No. 15. (a) Sale of good The goods sold by the Company consist mainly of steel products from the steel segment and products such as steel, chemicals, auto parts and machinery in the trade segment. For domestic sales, the control of the product is usually transferred to the customer when the product is delivered to the customer, at which point-in-time For export sales, revenue is recognized at the time when control of the product is transferred to the customer based on the “International Incoterms for Interpretation of Trade Terms” in the respective contracts. The Company’s export contracts typically stipulate transfer of control to the customer at the shipment of the products. Invoices are usually issued on the date of bill of lading and revenues are recognized based on the terms of Letter of Credit (L / C), Acceptance Condition (D / A), Payment Condition (D / P), Telegraphic Transfer (T / T) and others. The Company offers certain discount when the customer makes payments prior to the due date in the invoice in accordance with the payment terms. The Company recognized revenue only to the extent that it is highly probable that a significant reversal of cumulative revenue recognized will not occur when the credit term period elapses. (b) Transportation service Revenue for the transportation services performance included in the Company’s product sales contracts is recognized over the period when in which the services are provided. Revenue is measured by reference to the degree to which the service has been completed. The billing date and payment terms for the service charge are the same as those for the sale of goods. (c) Construction contracts In the case of construction contracts where the Company renders construction services for plants, etc., the customer controls the assets as they are being constructed. This is because under those contracts, the Company performs construction or design services to meet the customer’s specifications, and if a contract is terminated by the customer, the Company is entitled to reimbursement of all costs incurred to date, including a reasonable margin. When the outcome of the contract can be reliably estimated, the Company recognizes the contract revenue and contract cost as revenue and costs based on the progress of the contract activities as of the end of the reporting period. The percentage of completion is determined based on the proportion that contract costs incurred for work performed excluding contract cost incurred that do not reflect the stage of completion to date bear to the estimated total contract costs. If the outcome of the contract cannot be reliably estimated, revenue is recognized only to the extent of the contract costs that are probable to be recovered. If it is probable that the total contract costs will exceed the total contract revenue, expected losses are immediately recognized in profit or loss. The Company issues an invoice to the customer upon receipt of the customer’s progress confirmation, and payment is typically due within 45 days from the invoice date. (d) Certain construction contracts for apartments For certain construction service contracts for apartments where the criterion of an enforceable right to payment for performance is met under IFRS No. 15, revenue is recognized based the percentage completion, even if legal ownership or physical occupancy of the incomplete construction is not transferred to the customer during the construction period. Such recognition is done by considering the terms and conditions described in the relevant law and contracts such as the guarantee for sale policy, government approval on business plan, payment and termination terms. For certain construction contracts for apartments and shopping centers, where the criterion of an enforceable right to payment for performance is not met during the construction period, revenue is recognized upon completion of construction when the control of the apartments and shopping centers is The billing and settlement terms of the pre-sale
Finance income and finance costs	Finance income and finance costs The Company’s finance income and finance costs include: • interest income; • interest expense; • dividend income; • foreign currency gain or loss on financial assets and financial liabilities; • net gain or loss on financial assets measured at fair value through profit or loss; • hedge ineffectiveness recognized in profit or loss; and • net gain or loss on disposal of investments in debt securities measured at fair value through other comprehensive income. Interest income or expense is recognized using the effective interest method. Dividend income is recognized in profit or loss on the date on which the Company’s right to receive payment is established. The ‘effective interest rate’ is the rate that exactly discounts estimated future cash payments or receipts through the expected life of the financial instrument to: • the gross carrying amount of the financial asset; or • the amortized cost of the financial liability. In calculating interest income and expense, the effective interest rate is applied to the gross carrying amount of the asset (when the asset is not credit-impaired) or to the amortized cost of the liability. However, for financial assets that have become credit-impaired subsequent to initial recognition, interest income is calculated by applying the effective interest rate to the amortized cost of the financial asset. If the asset is no longer credit-impaired, then the calculation of interest income reverts to the gross basis.
Income taxes	Income taxes Income tax expense comprises current and deferred tax. Current tax and deferred tax are recognized in profit or loss except to the extent that it relates to a business combination, or items recognized directly in equity or in other comprehensive income. The Company recognizes interest and penalties related to corporate income taxes in accordance with IAS No. 12 “Income Taxes”. If interest and penalties do not meet the definition on income taxes, the Company applies IAS No. 37 “Provisions, Contingent Liabilities and Contingent Assets”. If there is uncertainty about an income tax treatment such as dispute of a particular tax treatment by a tax authority, the Company considers whether it is probable that the tax authority will accept the Company’s tax treatment in determining taxable profit, tax bases, unused tax losses, unused tax credits or tax rates. If the Company concludes it is probable that the tax authority will accept the Company’s tax treatment, the Company determines the taxable profit (tax loss), tax bases, unused tax losses, unused tax credits or tax rates consistently with the tax treatment used or planned to be used in its income tax filing. If not, the Company reflects the effect of uncertainty for each uncertain tax treatment by using either of the most likely amount or the expected value method whichever the entity expects to better predict the resolution of the uncertainty. (a) Current income tax Current income tax is the expected income tax payable or receivable on the taxable profit or loss for the year, using tax rates enacted or substantively enacted at the end of the reporting period and any adjustment to tax payable in respect of previous years. The taxable profit is different from the accounting profit for the period since the taxable profit is calculated excluding the temporary differences, which will be taxable or deductible in determining taxable profit of future periods, and non-taxable non-deductible The Company offsets current tax assets and current tax liabilities if, and only if, the Company: • 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. (b) Deferred income tax The measurement of deferred income tax liabilities and deferred tax assets reflects the tax consequences that would follow from the manner in which the Company expects, at the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities. The Company recognizes deferred income tax liabilities for all taxable temporary differences associated with investments in subsidiaries, associates, and joint ventures, except to the extent that the Company 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 Company recognizes deferred income tax assets for deductible temporary differences arising from investments in subsidiaries, associates and joint ventures, to the extent that it is probable that the temporary difference will reverse in the foreseeable future and taxable profit will be available against which the temporary difference can be utilized. However, deferred tax is not recognized for the following temporary differences: taxable temporary differences arising on the initial recognition of goodwill, or the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither accounting profit or loss nor taxable income. A deferred income tax asset is recognized for the carryforward of unused tax losses, tax credits and deductible temporary differences to the extent that it is probable that future taxable profit will be available against which the unused tax losses, tax credits and deductible temporary differences can be utilized. The future taxable profit depends on reversing taxable temporary differences. When there are insufficient taxable temporary differences, the probability of future taxable profit (including the reversal of temporary differences) should be considered. The carrying amount of a deferred income tax asset is reviewed at the end of each reporting period and is reduced 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. Deferred income tax assets and liabilities are offset only if there is a legally enforceable right to offset the related current income tax liabilities and assets, and they relate to income taxes levied by the same tax authority and they intend to settle current income tax liabilities and assets on a net basis.
Earnings per share	Earnings per share Management calculates basic earnings per share (“EPS”) data for POSCO HOLDINGS INC.’s common shares, which is presented at the end of the statement of comprehensive income. Basic EPS is calculated by dividing profit attributable to common shareholders of POSCO HOLDINGS INC. by the weighted average number of common shares outstanding during the period, adjusted for own shares held. Diluted EPS is calculated by adjusting basic EPS and weighted average number of common shares, concerning the effect of all dilutive potential common shares.
Segment Reporting	Operating segments An operating segment is a component of the Company that engages in business activities from which it may earn revenues and incur expenditures, including revenues and expenses that relate to transactions with any of the Company’s other components, whose operating results are regularly reviewed by the Company’s chief operating decision maker (“CODM”) to make decisions about resources to be allocated to the segment and assess its performance and for which discrete financial information is available. Management has determined that the CODM of the Company is the CEO. Segment results that are reported to the CEO include items directly attributable to a segment and items allocated on a reasonable basis. With regard to Construction segment in Green Infrastructure business, segment profit and loss is determined in accordance with IFRS except that revenues and expenses from the development and sale of certain residential real estates are determined by reference to the stage of completion, while in the consolidated financial statements, they are recognized when the title to the real estates is transferred to the buyer. For the other segments, segment profit and loss is determined in accordance with IFRS without any allocation of corporate expenses. The accounting policies used in reporting segment information are consistent with the accounting policies used in the preparation of the consolidated financial statements except the assets and liabilities related to certain real estate contract revenue of the construction segment explained above which are determined by reference to the stage of completion of the contract activity at the end of each period. Corporate expenses are not allocated to segments in determining segment profit and loss. In addition, segment assets and liabilities, are not allocated to segments either. The assets and liabilities of each segment presented in Note 41 are based on the separate financial statements of the entities belong to each segment. In addition, there are a variety of transactions amongst the reportable segments. These transactions include sales and purchase of products, materials and property, plant and equipment, and rendering of construction service and so on.
Share-based payment	Share-based payment For share based payment transactions in which shares or stock options are granted to employees in exchange for goods or services received, if the fair value of the goods or services received cannot be measured reliably, the fair value of goods or services received is indirectly measured based on the fair value of equity instruments, and the amount is recognized as employee benefits (current expense) and equity during the vesting period. If the vesting condition of a share option is other than service condition or market condition, the recognized employee cost is adjusted to be determined based on the actual quantity of the stock option to be totally vested.
Joint Arrangements	Joint Arrangements A joint arrangement, wherein two or more parties have joint control, is classified as either a joint operation or a joint venture. A joint operator recognizes its direct right to the assets, liabilities, revenues and expenses of joint operations and its share of any jointly held or incurred assets, liabilities, revenues and expenses. Interests in joint ventures are accounted for using the equity method, after initially being recognized at cost in the consolidated statement of financial position.
New standards and interpretations not yet adopted	New standards and interpretations not yet adopted A number of new standards are effective for annual periods beginning after January 1, 2022 and earlier application is permitted but the Company has not early adopted the new or amended standards in preparing these consolidated financial statements. (a) IAS No. 12 “Income Tax”—Deferred Tax related to Assets and Liabilities arising from a Single Transaction The amendment clarifies the coverage of initial recognition exemptions accounting for deferred tax related to both assets and liabilities arising from a single transaction. A transaction that is not a business combination may lead to the initial recognition of deferred tax asset and deferred tax liability, and at the time of the transaction, affect neither accounting profit nor tax profit. The amendment is effective for annual periods beginning on or after January 1, 2023. Early application is permitted. The Company does not expect the effect of the amendments to the consolidated financial statements to be significant. (b) IAS No. 1 “Presentation of Financial Statements”—Classification of Liabilities as Current or Non-current The amendment clarifies that the classification of current and non-current was initially postponed (￦ non-current (c) IAS No. 1 “Presentation of Financial Statements”—Disclosure of Accounting Policies Material accounting policy information considering with other information included in financial statements is expected to influence the decisions of primary users of financial statements, and is required to be disclosed. The amendment is effective for annual periods beginning on or after January 1, 2023. Early application is permitted. The Company is analyzing the effect of the amendments to the consolidated financial statements. (d) IAS No. 8 “Accounting Policies, Changes in Accounting Estimates and Errors”—Definition of Accounting Estimates For accounting estimates defined as monetary amounts in the financial statements, a change in measurement techniques or inputs are clarified as changes in accounting estimates unless they result from the correction of prior period errors. The amendment is effective for annual periods beginning on or after January 1, 2023. Early application is permitted. The Company does not expect the effect of the amendments to the consolidated financial statements to be significant. (e) IAS No. 1 “Presentation of Financial Statements”—Disclosure of gains and losses on valuation of financial liabilities with exercise price adjustment conditions When all or part of a financial instrument subject to the condition in which the exercise price is adjusted according to changes of the issuer’s stock price, is classified as a financial liability, the carrying amount of the financial liability and related gains and losses are required to be disclosed. The amendment is effective for annual periods beginning on or after January 1, 2023. Early application is permitted. The Company does not expect the effect of the amendments to the consolidated financial statements to be significant. (f) IFRS No. 16 “Leases”—Lease Liability in a Sale and Leaseback The amendment confirms that the seller-lessee includes variable lease payments when it measures a lease liability arising from a sale-and-leaseback transaction. After initial recognition, the seller-lessee applies the general requirements for subsequent accounting of the lease liability such that it recognizes no gain or loss relating to the right of use it retains. The amendment is effective for annual periods beginning on or after January 1, 2024. Early application is permitted. (g) IAS No. 1 “Presentation of Financial Statements”—Non-current Liabilities with Covenants The amendment clarifies that covenants with which an entity must comply after the reporting date do not affect a liability’s classification at the reporting date. However, when non-current liabilities are subject to future covenants, the entity will need to disclose information to help users understand the risk that those liabilities could become repayable within 12 months after the reporting date. The amendment is effective for annual periods beginning on or after January 1, 2024. Early application is permitted. The Company does not expect the effect of the amendment to the consolidated financial statements to be significant.

General Information (Tables)

General Information (Tables)	12 Months Ended
	Dec. 31, 2022
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POSCO's Shareholders	As of December 31, 2022, POSCO HOLDINGS INC.’s shareholders are as follows: Shareholder’s name Number of Ownership National Pension Service 7,706,725 9.11 BlackRock Fund Advisors(*1) 4,390,734 5.19 The Government of Singapore 3,336,926 3.95 Nippon Steel Corporation 2,894,712 3.42 FMR LLC (Fidelity Management&Research) 2,783,481 3.29 Others 63,458,652 75.04 84,571,230 100.00 (*1) Includes shares held by subsidiaries and others.
Details of Consolidated Subsidiaries	(b) Consolidated subsidiaries Details of consolidated subsidiaries as of December 31, 2021 and 2022 are as follows: Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Domestic] POSCO Steel, rolled products and plates — — — 100.00 — 100.00 Pohang POSCO ENGINEERING & CONSTRUCTION., CO., LTD. Engineering and construction 52.80 — 52.80 52.80 — 52.80 Pohang POSCO STEELEON CO., Ltd. (formerly, COATED & COLOR STEEL Co., Ltd.) Coated steel manufacturing 56.87 — 56.87 — 56.87 56.87 Pohang POSCO ICT Computer hardware and software distribution 65.38 — 65.38 65.38 — 65.38 Pohang POSCO Research Institute Economic research and consulting 100.00 — 100.00 100.00 — 100.00 Seoul POSCO O&M CO.,Ltd. Business facility maintenance 47.17 52.83 100.00 47.17 52.83 100.00 Seoul POSCO A&C Architecture and consulting 45.66 54.34 100.00 45.66 54.34 100.00 Seoul POSCO Venture Capital Co., Ltd. Investment in venture companies 95.00 — 95.00 95.00 — 95.00 Pohang eNtoB Corporation Electronic commerce 7.50 59.94 67.44 — 69.32 69.32 Seoul POSCO CHEMICAL CO., LTD. Refractories, Anode/Cathode materials manufacturing and sales 59.72 — 59.72 59.76 — 59.76 Pohang POSCO FLOW Co., Ltd. (formerly, POSCO-Terminal Co., Ltd.) Transporting and warehousing 100.00 — 100.00 100.00 — 100.00 Gwangyang POSCO M-TECH Packing materials manufacturing and sales 48.85 — 48.85 — 48.85 48.85 Pohang POSCO ENERGY CO., LTD. Generation of electricity 100.00 — 100.00 100.00 — 100.00 Seoul PNR Steel by product manufacturing and sales 70.00 — 70.00 — 70.00 70.00 Pohang Future Creation Fund Postech Early Stage account Investment in venture companies — 40.00 40.00 — 40.00 40.00 Seoul POSCO WOMAN’S FUND Investment in venture companies — 40.00 40.00 — 40.00 40.00 Seoul SPH Co, LTD. House manufacturing and management — 100.00 100.00 — 100.00 100.00 Incheon POSCO Group University Education service and real estate business 100.00 — 100.00 100.00 — 100.00 Incheon Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Domestic] Growth Ladder POSCO K-Growth Investment in venture companies — 50.00 50.00 — 50.00 50.00 Pohang 2015 POSCO New technology II Fund Investment in venture companies — 25.00 25.00 — — — Pohang POSCO Research & Technology Intellectual Property Services and consulting 100.00 — 100.00 100.00 — 100.00 Seoul TANCHEON E&E Refuse derived fuel and power generation — 100.00 100.00 — 100.00 100.00 Seoul POSCO Humans Construction 75.49 24.51 100.00 — 100.00 100.00 Pohang Mapo Hibroad Parking Co., Ltd. Construction — 71.00 71.00 — 71.00 71.00 Seoul Busan E&E Co., Ltd. Refuse derived fuel and power generation 70.00 — 70.00 70.00 — 70.00 Busan POSCO INTERNATIONAL Corporation Trading, energy & resource development and others 62.91 0.03 62.94 62.92 — 62.92 Incheon Pohang Scrap Recycling Distribution Center Co., Ltd. Steel processing and sales — 51.00 51.00 — 51.00 51.00 Pohang Songdo Development PMC (Project Management Company) LLC. Housing business agency — 100.00 100.00 — 100.00 100.00 Incheon Korea Fuel Cell Fuel cell — 100.00 100.00 — 100.00 100.00 Pohang POSCO GEM fund no1 Investment in venture companies 98.81 1.19 100.00 98.81 1.19 100.00 Pohang POSCO MOBILITY SOLUTION STC, TMC, Plate manufacturing and sales — 100.00 100.00 — 100.00 100.00 Cheonan P&O Chemical Co., Ltd. Chemical production — 51.00 51.00 — 51.00 51.00 Gwangyang Posco New Growth Investment in venture companies 99.66 0.34 100.00 99.67 0.18 99.85 Seoul IMP Fund I Investment in venture companies 98.04 — 98.04 98.04 — 98.04 Pohang POSCO-Pilbara LITHIUM SOLUTION CO., Ltd. Lithium manufacturing and sales 100.00 — 100.00 82.00 — 82.00 Gwangyang POSCO-HY Non-ferrous 65.00 — 65.00 — 65.00 65.00 Gwangyang Consus Pf private Real Estate Fund REITs — 66.67 66.67 — 66.67 66.67 — New Energy Hub Electricity and gas supply 87.44 12.56 100.00 50.00 50.00 100.00 Gwangyang Posco Busan New deal Fund Investment in venture companies — 32.00 32.00 — 32.00 32.00 Pohang Shinan Green Energy Co., LTD Electricity production — 54.53 54.53 — 54.53 54.53 Shinahn eSteel4U Wholesales and retail — — — — 61.12 61.12 Seoul POSCO Social Investment Fund Investment in venture companies — — — 20.00 50.00 70.00 Pohang Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Domestic] POSCO Silicon Solution Co., Ltd (formerly, TERA TECHNOS CO., Ltd.) Other enginerring R&D industries — — — 100.00 — 100.00 Sejong Consus Pf Private Real Estate Fund No.2 Real estate development — — — — 66.67 66.67 — POSCO GS Eco Materials Co., Ltd Rechargeable battery — — — 100.00 — 100.00 Seoul POSCO Lithium Solution Co., Ltd. Lithium manufacturing and sales — — — 100.00 — 100.00 Gwangyang [Foreign] POSCO America Corporation Research&Consulting 99.45 0.55 100.00 99.45 0.55 100.00 USA POSCO AUSTRALIA PTY LTD Raw material sales & mine development 100.00 — 100.00 100.00 — 100.00 Australia POSCO Canada Ltd. Coal sales 100.00 — 100.00 100.00 — 100.00 Canada POSCAN ELKVIEW COAL LTD. Coal sales — 100.00 100.00 — — — Canada POSCO Asia Co., Ltd. Finance 100.00 — 100.00 100.00 — 100.00 China POSCO-CTPC Co., Ltd. Steel manufacturing and sales 100.00 — 100.00 100.00 — 100.00 China POSCO E&C Vietnam Co., Ltd. Steel structure manufacturing and sales — 100.00 100.00 — 100.00 100.00 Vietnam POSCO (Zhangjiagang) Stainless Steel Co.,Ltd. Stainless steel manufacturing and sales 58.60 23.88 82.48 58.60 23.88 82.48 China POSCO (Thailand) Company Limited Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Thailand POSCO-MKPC SDN BHD Steel manufacturing and sales 70.00 — 70.00 — 70.00 70.00 Malaysia Qingdao Pohang Stainless Steel Co., Ltd. Stainless steel manufacturing and sales 70.00 30.00 100.00 70.00 30.00 100.00 China POSCO(Suzhou) Automotive Processing Steel manufacturing and sales 90.00 10.00 100.00 90.00 10.00 100.00 China POSCO-China Qingdao Processing Steel manufacturing and sales 100.00 — 100.00 100.00 — 100.00 China POS-ORE Iron ore development and sales — 100.00 100.00 — 100.00 100.00 Australia POSCO-China Holding Corp. Holding company 100.00 — 100.00 100.00 — 100.00 China POSCO JAPAN Co., Ltd. Steel Marketing, demand development and 100.00 — 100.00 100.00 — 100.00 Japan POS-CD Coal sales — 100.00 100.00 — 100.00 100.00 Australia POS-GC Coal sales — 100.00 100.00 — 100.00 100.00 Australia Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO-India Private Limited Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 India POSCO-India Pune Processing Center. Pvt. Ltd. Steel manufacturing and sales 65.00 — 65.00 65.00 — 65.00 India POSCO Japan PC CO.,LTD Steel manufacturing and sales — 86.12 86.12 — 86.12 86.12 Japan POSCO-CFPC Co., Ltd. Steel manufacturing and sales 39.60 60.40 100.00 44.66 55.34 100.00 China POSCO E&C CHINA Co., Ltd. Civil engineering and construction — 100.00 100.00 — 100.00 100.00 China POSCO MPPC S.A. de C.V. Steel manufacturing and sales 21.02 75.29 96.31 21.02 75.29 96.31 Mexico Zhangjigang Pohang Port Co., Ltd. Loading and unloading service — 100.00 100.00 — 100.00 100.00 China POSCO-VIETNAM Co., Ltd. Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Vietnam POSCO MEXICO S.A. DE C.V. Automotive steel sheet manufacturing and sales 83.28 14.88 98.16 83.28 14.88 98.16 Mexico POSCO-Poland Wroclaw Processing Center Steel manufacturing and sales 60.00 — 60.00 60.00 — 60.00 Poland POS-NP Coal sales — 100.00 100.00 — 100.00 100.00 Australia DAEWOO INTERNATIONAL SHANGHAI WAIGAOQIAO CO., LTD Intermediary trade & bonded warehouse operation — 100.00 100.00 — 100.00 100.00 China PT. Bio Inti Agrindo Forest resources development — 85.00 85.00 — 85.00 85.00 Indonesia POSCO ENGINEERING AND CONSTRUCTION AUSTRALIA (POSCO E&C AUSTRALIA) PTY LTD Construction and engineering service — 100.00 100.00 — 100.00 100.00 Australia POSCO-TISCO (JILIN) PROCESSING CENTER Co., Ltd. Steel manufacturing and sales 50.00 10.00 60.00 50.00 10.00 60.00 China POSCO Thainox Public Company Limited STS cold-rolled steel manufacturing and sales 74.56 — 74.56 — 74.56 74.56 Thailand HUNCHUN POSCO HMM INTERNATIONAL LOGISTICS CO., LTD. Logistics — 81.55 81.55 — 81.55 81.55 China POSCO INTERNATIONAL VIETNAM CO., LTD Trading business — 100.00 100.00 — 100.00 100.00 Vietnam Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO(Chongqing) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 90.00 10.00 100.00 — 100.00 100.00 China SUZHOU POSCO-CORE TECHNOLOGY CO., LTD. Component manufacturing and sales 33.91 66.09 100.00 — 100.00 100.00 China PT.Krakatau Posco Chemical Calcination Quicklime manufacturing and sales — 80.00 80.00 — 80.00 80.00 Indonesia POSCO AFRICA (PROPRIETARY) LIMITED Mine development 100.00 — 100.00 100.00 — 100.00 South Africa POSCO ICT BRASIL IT service and engineering — 100.00 100.00 — 100.00 100.00 Brazil POSCO Center Beijing Real estate development, rental and management — 100.00 100.00 — 100.00 100.00 China POSCO-Malaysia SDN. BHD. Steel manufacturing and sales 81.79 13.63 95.42 — 95.42 95.42 Malaysia PT KRAKATAU BLUE WATER Wastewater treamtment facilities — 67.00 67.00 — 67.00 67.00 Indonesia POSCO INTERNATIONAL MYANMAR CO.,LTD. Trading business — 100.00 100.00 — 100.00 100.00 Myanmar POSCO-Italy Processing Center Stainless steel sheet manufacturing and sales 88.89 11.11 100.00 88.89 11.11 100.00 Italy Myanmar POSCO C&C Company,Limited. Steel manufacturing and sales — 70.00 70.00 — 70.00 70.00 Myanmar POSCO ICT VIETNAM IT service and electric control engineering — 100.00 100.00 — 100.00 100.00 Vietnam POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE.LTD. Real estate development — 75.00 75.00 — 75.00 75.00 Singapore Myanmar POSCO Engineering & Construction Company, Limited. Construction and engineering service — 100.00 100.00 — 100.00 100.00 Myanmar POS-Minerals Mine development management and sales — 100.00 100.00 — 100.00 100.00 USA POSCO(Wuhu) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 68.57 31.43 100.00 68.57 31.43 100.00 China Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO Engineering and Construction India Private Limited Civil engineering and construction — 100.00 100.00 — 100.00 100.00 India POSCO COATED STEEL (THAILAND) CO., LTD. Vehicle steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Thailand POSCO INTERNATIONAL AMARA Co., Ltd. Real estate development — 85.00 85.00 — 85.00 85.00 Myanmar POSMATE-CHINA CO., LTD Business facility maintenance — 100.00 100.00 — 100.00 100.00 China POSCO-Mexico Villagran Wire-rod Steel manufacturing and sales 56.75 10.00 66.75 56.75 10.00 66.75 Mexico POSCO ChengDu Processing Center Steel manufacturing and sales 33.00 10.00 43.00 — 43.00 43.00 China POSCO(Suzhou) Steel Processing Center CO., LTD. Steel manufacturing and sales 30.00 70.00 100.00 — 100.00 100.00 China POSCO E&C SMART S DE RL DE CV Civil engineering and construction — 100.00 100.00 — 100.00 100.00 Mexico POSCO Philippine Manila Processing Center, Inc. Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Philippines POSCO E&C HOLDINGS CO.,Ltd. Holding company — 100.00 100.00 — 100.00 100.00 Thailand POSCO INTERNATIONAL POWER (PNGLAE) LTD. Electricity production — 100.00 100.00 — 100.00 100.00 Papua New Guinea PT.Krakatau Posco Social Enterprise Social enterprise — 100.00 100.00 — 100.00 100.00 Indonesia Ventanas Philippines Construction Inc Construction — 100.00 100.00 — 100.00 100.00 Philippines SANPU TRADING Co., Ltd. Raw material trading — 70.04 70.04 — 70.04 70.04 China Zhangjiagang BLZ Pohang International Trading Steel Intermediate trade — 100.00 100.00 — 100.00 100.00 China POSCO RU Limited Liability Company Trade and business development 100.00 — 100.00 100.00 — 100.00 Russia GOLDEN LACE POSCO INTERNATIONAL CO., LTD. Rice processing — 60.00 60.00 — 60.00 60.00 Myanmar POSCO ICT China CO.,LTD IT service and DVR business — 100.00 100.00 — 100.00 100.00 China Pos-Sea Steel Intermediate trade — 100.00 100.00 — 100.00 100.00 Singapore POSCO Europe Steel Distribution Center Logistics & Steel sales 50.00 20.00 70.00 — 70.00 70.00 Slovenia Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO ENGINEERING (THAILAND) CO., LTD. Construction and engineering service — 100.00 100.00 — 100.00 100.00 Thailand POSCO VST CO., LTD. Stainless steel sheet manufacturing and sales 95.65 — 95.65 95.65 — 95.65 Vietnam POSCO INTERNATIONAL UKRAINE, LLC. Grain sales — 100.00 100.00 — 100.00 100.00 Ukraine Zhangjiagang Pohang Refractories Co., Ltd. Refractory materials sales & furnacemaintenance — 51.00 51.00 — 51.00 51.00 China POSCO Maharashtra Steel Private Limited Steel manufacturing and sales 100.00 — 100.00 100.00 — 100.00 India POSCO INDIA PROCESSING CENTER PRIVATE LIMITED Steel manufacturing and sales 93.34 1.98 95.32 93.34 1.98 95.32 India POSCO TNPC Otomotiv Celik San. Ve Tic. A.S Steel manufacturing and sales 100.00 — 100.00 — 100.00 100.00 Turkey POSCO Vietnam Processing Center. Co.,Ltd Steel manufacturing and sales 94.05 5.95 100.00 94.05 5.95 100.00 Vietnam POSCO(Liaoning) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 90.00 10.00 100.00 90.00 10.00 100.00 China POSCO-Indonesia Jakarta Processing Center Steel manufacturing and sales 70.51 21.69 92.20 70.51 21.69 92.20 Indonesia PT.MRI Mine development 65.00 — 65.00 65.00 — 65.00 Indonesia POSCO TMC INDIA PRIVATE LIMITED Steel manufacturing and sales — 100.00 100.00 — 100.00 100.00 India POSCO AMERICA ALABAMA PROCESSING CENTER CO., LTD. Steel manufacturing and sales — 97.80 97.80 — 97.80 97.80 USA POSCO(Yantai) Automotive Processing Center Co., Ltd. Steel manufacturing and sales 90.00 10.00 100.00 90.00 10.00 100.00 China POSCO India Steel Distribution Center Private Ltd. Steel logistics — 100.00 100.00 — 100.00 100.00 India POSCO YAMATO VINA STEEL JOINT STOCK COMPANY Steel manufacturing and sales 51.00 — 51.00 — 51.00 51.00 Vietnam PT.POSCO ICT INDONESIA IT service and electric control engineering — 66.99 66.99 — 66.99 66.99 Indonesia POSCO NCR Coal Ltd. Coal sales — 100.00 100.00 — 100.00 100.00 Canada Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO WA PTY LTD Iron ore sales & mine development 100.00 — 100.00 100.00 — 100.00 Australia POSCO AUSTRALIA GP PTY LIMITED Resource development — 100.00 100.00 — 100.00 100.00 Australia PT. KRAKATAU POSCO ENERGY Electricity production construction and — 90.00 90.00 — 90.00 90.00 Indonesia POSCO INTERNATIONAL AMERICA CORP. Trading business — 100.00 100.00 — 100.00 100.00 USA POSCO INTERNATIONAL Deutschland GMBH Trading business — 100.00 100.00 — 100.00 100.00 Germany POSCO INTERNATIONAL JAPAN CORP. Trading business — 100.00 100.00 — 100.00 100.00 Japan POSCO INTERNATIONAL SINGAPORE PTE. LTD. Trading business — 100.00 100.00 — 100.00 100.00 Singapore POSCO INTERNATIONAL ITALIA S.R.L. Trading business — 100.00 100.00 — 100.00 100.00 Italy POSCO INTERNATIONAL (CHINA) CO., LTD Trading business — 100.00 100.00 — 100.00 100.00 China POSCO INTERNATIONAL TEXTILE LLC. Textile manufacturing — 100.00 100.00 — 100.00 100.00 Uzbekistan POSCO INTERNATIONAL AUSTRALIA Resource development — 100.00 100.00 — 100.00 100.00 Australia POSCO MAURITIUS LIMITED Coal development and sales — 100.00 100.00 — 100.00 100.00 Mauritius PT. KRAKATAU POSCO Steel manufacturing and sales 70.00 — 70.00 50.00 — 50.00 Indonesia POSCO INTERNATIONAL MEXICO, S.A de C.V.. Trading business — 100.00 100.00 — 100.00 100.00 Mexico POSCO INTERNATIONAL MALAYSIA SDN BHD Trading business — 100.00 100.00 — 100.00 100.00 Malaysia PT.POSCO INDONESIA INTI Consulting 100.00 — 100.00 100.00 — 100.00 Indonesia POSCO INTERNATIONAL SHANGHAI CO., LTD. Trading business — 100.00 100.00 — 100.00 100.00 China Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] PGSF, L.P. Investment in bio tech Industry — 100.00 100.00 — 100.00 100.00 USA POSCO INTERNATIONAL INDIA PVT., LTD Trading business — 100.00 100.00 — 100.00 100.00 India POSCO(Dalian) IT Center Development Co., Ltd. Real estate development and investment — 100.00 100.00 — 100.00 100.00 China PT. POSCO E&C INDONESIA Civil engineering and construction — 100.00 100.00 — 100.00 100.00 Indonesia HUME COAL PTY LTD Raw material manufacturing — 100.00 100.00 — 100.00 100.00 Australia Brazil Sao Paulo Steel Processing Center Steel manufacturing and sales — 76.00 76.00 — 76.00 76.00 Brazil POSCO ENGINEERING & CONSTRUCTION DO BRAZIL LTDA. Construction — 100.00 100.00 — 100.00 100.00 Brazil POSCO ASSAN TST STEEL INDUSTRY Steel manufacturing and sales 60.00 10.00 70.00 60.00 10.00 70.00 Turkey HONG KONG POSCO E&C (CHINA) INVESTMENT Co., Ltd. Real estate development and investment — 100.00 100.00 — 100.00 100.00 Hongkong JB CLARK HILLS Apartment construction — 70.00 70.00 — 70.00 70.00 Philippines POS-LT Lithium mining investment — 100.00 100.00 — 100.00 100.00 Australia ZHEJIANG POSCO-HUAYOU ESM CO., LTD Anode material manufacturing 60.00 — 60.00 18.70 41.30 60.00 China POSCO Argentina S.A.U. Mineral exploration/manufacturing/sales 100.00 — 100.00 100.00 — 100.00 Argentina GRAIN TERMINAL HOLDING PTE. LTD. Trading business — 75.00 75.00 — 75.00 75.00 Singapore Mykolaiv Milling Works PJSC. Grain trading — 100.00 100.00 — 100.00 100.00 Ukraine Yuzhnaya Stevedoring Company Limited LLC. Cargo handling — 100.00 100.00 — 100.00 100.00 Ukraine Posco International (Thailand) Co., Ltd. Trade — 100.00 100.00 — 100.00 100.00 Thailand PT POSCO INTERNATIONAL INDONESIA Trade — 100.00 100.00 — 100.00 100.00 Indonesia PEC POWERCON SDN. BHD. Construction and engineering service — 100.00 100.00 — 100.00 100.00 Malaysia POSCO CHEMICAL Free Zone Enterprise Refractory Construction — 100.00 100.00 — — — Nigeria Poland Legnica Sourcing Center Sp. z o.o Non-ferrous 100.00 — 100.00 100.00 — 100.00 Poland Principal operations Ownership (%) Region December 31, 2021 December 31, 2022 POSCO Subsidiaries Total POSCO Subsidiaries Total [Foreign] POSCO INTERNATIONAL E&P MALAYSIA SDN. BHD. Extraction of Crude petroleum and Natural gas — 100.00 100.00 — 100.00 100.00 Malaysia AGPA PTE. LTD. Holding company — 100.00 100.00 — 100.00 100.00 Singapore Senex Holdings PTY LTD(*1) Extraction of Crude petroleum and Natural gas — — — — 50.10 50.10 Australia Posco International Mexico e-Mobility Electric Vehicle Parts Manufacturing — — — — 100.00 100.00 Mexico POSCO CHEMICAL CANADA INC. Holding company — — — — 100.00 100.00 Canada ULTIUM CAM GP INC. Holding company — — — — 85.00 85.00 Canada ULTIUM CAM LIMITED PARTNERSHIP Anode material manufacturing — — — — 85.00 85.00 Canada POSCO(Wuhan) Automotive Processing Center Co.,Ltd Steel manufacturing and sales — — — 68.57 31.43 100.00 China POSCO BRAZIL LTDA Office Administration, Management Consulting — — — — 100.00 100.00 Brazil (*1) Senex Holdings PTY LTD includes 19 subsidiaries including Senex Energy Limited.
Details of Non-controlling Interest	(c) Details of non-controlling 1) December 31, 2020 (in millions of Won) POSCO PT. POSCO POSCO POSCO Others Total Current assets ￦ 3,992,996 503,633 774,817 4,614,481 465,158 7,207,141 17,558,226 Non-current 3,410,528 2,366,359 1,229,349 1,823,229 187,415 4,789,484 13,806,364 Current liabilities (2,649,187 ) (1,722,805 ) (203,443 ) (2,933,668 ) (278,335 ) (6,354,111 ) (14,141,549 ) Non-current (1,816,160 ) (1,235,948 ) (833,857 ) (978,672 ) (24,132 ) (1,727,139 ) (6,615,908 ) Equity 2,938,177 (88,761 ) 966,866 2,525,370 350,106 3,915,375 10,607,133 Non-controlling 1,089,082 (26,628 ) 374,582 1,191,998 121,200 1,330,280 4,080,514 Sales 19,230,652 1,691,310 1,524,146 6,943,725 935,958 21,059,978 51,385,769 Profit (loss) for the period 173,155 (179,403 ) 29,720 315,139 8,961 (44,660 ) 302,912 Profit (loss) attributable to non-controlling 64,183 (53,821 ) 11,514 148,748 3,102 (19,899 ) 153,827 Cash flows from operating activities 324,822 62,276 11,021 451,803 21,403 123,108 994,433 Cash flows from investing activities (38,535 ) 212 (162,861 ) (398,937 ) (4,841 ) (93,565 ) (698,527 ) Cash flows from financing activities (before dividends to non-controlling (99,765 ) (45,207 ) 122,736 9,475 (302 ) (192,311 ) (205,374 ) Dividend to non-controlling (32,004 ) — (9,451 ) (9,867 ) (2,628 ) (6,102 ) (60,052 ) Effect of exchange rate fluctuation on cash held (2,425 ) (1,421 ) (398 ) (2,220 ) (74 ) 702 (5,836 ) Net increase (decrease) in cash and cash equivalents 152,093 15,860 (38,953 ) 50,254 13,558 (168,168 ) 24,644 2) December 31, 2021 (in millions of Won) POSCO PT. POSCO POSCO POSCO Others Total Current assets ￦ 5,952,771 968,129 2,071,307 5,221,691 423,422 9,496,214 24,133,534 Non-current 3,322,590 2,388,139 1,708,558 1,929,362 185,508 4,772,409 14,306,566 Current liabilities (4,537,785 ) (1,155,003 ) (604,333 ) (3,100,971 ) (263,794 ) (7,918,852 ) (17,580,738 ) Non-current (1,666,455 ) (1,778,668 ) (835,222 ) (1,306,648 ) (10,051 ) (1,706,779 ) (7,303,823 ) Equity 3,071,121 422,597 2,340,310 2,743,434 335,085 4,642,992 13,555,539 Non-controlling 1,138,360 126,779 942,660 1,294,925 116,000 1,542,960 5,161,684 Sales 30,545,740 2,694,601 1,939,524 6,693,933 832,127 28,538,963 71,244,888 Profit (loss) for the period 223,845 500,801 128,960 266,821 (18,802 ) 690,197 1,791,822 Profit (loss) attributable to non-controlling 82,972 150,240 51,944 125,942 (6,509 ) 189,590 594,179 Cash flows from operating activities (235,359 ) 151,393 36,745 113,021 (18,494 ) 130,828 178,134 Cash flows from investing activities (91,619 ) (4,022 ) (639,965 ) (243,463 ) (17,309 ) (86,585 ) (1,082,963 ) Cash flows from financing activities (before dividends to non-controlling 279,529 (81,187 ) 595,521 36,359 (226 ) 9,604 839,600 Dividend to non-controlling (32,004 ) — (7,370 ) (9,867 ) (2,628 ) (7,671 ) (59,540 ) Effect of exchange rate fluctuation on cash held 1,937 3,916 6 3,048 3 6,216 15,126 Net increase (decrease) in cash and cash equivalents (77,516 ) 70,100 (15,063 ) (100,902 ) (38,654 ) 52,392 (109,643 ) 3) December 31, 2022 (in millions of Won) POSCO PT. POSCO POSCO POSCO Others Total Current assets ￦ 5,289,899 1,125,123 1,832,804 5,326,049 585,766 10,305,149 24,464,790 Non-current 3,470,861 3,062,378 2,261,649 2,033,432 226,598 7,264,540 18,319,458 Current liabilities (3,809,495 ) (2,486,616 ) (920,656 ) (3,372,310 ) (419,452 ) (8,680,121 ) (19,688,650 ) Non-current (2,203,923 ) (834,456 ) (938,447 ) (1,076,909 ) (4,431 ) (2,094,774 ) (7,152,940 ) Equity 2,747,342 866,429 2,235,350 2,910,262 388,481 6,794,794 15,942,658 Non-controlling 1,018,764 433,214 899,416 1,373,670 134,484 2,480,625 6,340,173 Sales 32,532,465 3,006,300 3,041,287 8,376,559 1,101,037 34,933,760 82,991,408 Profit (loss) for the period 323,749 140,967 114,365 174,061 42,832 269,926 1,065,900 Profit (loss) attributable to non-controlling 120,052 70,483 46,016 82,158 14,828 106,091 439,628 Cash flows from operating activities 480,927 342,484 (27,009 ) (54,506 ) (594 ) 68,906 810,208 Cash flows from investing activities (389,092 ) (372,345 ) (26,492 ) 160,750 3,973 (619,072 ) (1,242,278 ) Cash flows from financing activities (before dividends to non-controlling 136,954 (115,046 ) 107,266 154,946 (561 ) 614,001 897,560 Dividend to non-controlling (36,585 ) — (9,360 ) (14,800 ) (2,628 ) (16,921 ) (80,294 ) Effect of exchange rate fluctuation on cash held 853 12,690 (2,469 ) (450 ) (35 ) (1,412 ) 9,177 Net increase (decrease) in cash and cash equivalents 193,057 (132,217 ) 41,936 245,940 155 45,502 394,373
Details of Associates	(d) Details of associates and joint ventures 1) Associates Details of associates as of December 31, 2021 and 2022 are as follows: Ownership (%) Region Investee Category of business 2021 2022 [Domestic] New Songdo International City Development, LLC Real estate rental 29.90 29.90 Incheon Gale International Korea, LLC Real estate rental 29.90 29.90 Incheon SNNC Raw material manufacturing and sales 49.00 49.00 Gwangyang KONES, Corp. Technical service 26.72 26.72 Gyeongju CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd Real estate development 29.53 29.53 Chungju DAEHO GLOBAL MANAGEMENT CO., LTD. Investment advisory service 35.82 35.82 Pohang Mokpo Deayang Industrial Corporation Real estate development and rental 27.40 27.40 Mokpo Gunggi Green Energy(*1) Electricity generation 19.00 19.00 Hwaseong Pohang Special Welding Co.,Ltd. Welding material and tools manufacturing and sales 50.00 50.00 Pohang EQP POSCO Global NO1 Natural Resources Private Equity Fund Investment in new technologies 42.82 27.23 Seoul KC Chemicals CORP.(*1) Machinery manufacturing 19.00 18.76 Hwaseong POSTECH Social Enterprise Fund(*1) Investment in new technologies 9.17 9.17 Seoul QSONE Co.,Ltd. Real estate rental and facility management 50.00 50.00 Seoul Chun-cheon Energy Co., Ltd Electricity generation 49.10 49.10 Chuncheon Noeul Green Energy(*1) Electricity generation 10.00 10.00 Seoul Posco-IDV Investment in new technologies 17.86 17.86 Seoul Daesung Steel(*1) Steel sales 17.54 17.54 Busan Pohang E&E Co., LTD Investment in waste energy 30.00 30.00 Pohang POSCO Energy Valley Fund Investment in new technologies 20.00 20.00 Pohang Hyundai Invest Guggenheim CLO Qualified Private Special Asset Trust No.2 Investment in new technologies 38.47 38.57 Seoul Posco Agri-Food Export Fund Investment in new technologies 30.00 30.00 Seoul Posco Culture Contents Fund Investment in new technologies 31.67 31.67 Seoul PCC Amberstone Private Equity Fund 1(*1) Investment in new technologies 8.80 8.80 Seoul UITrans LRT Co., Ltd. Transporting 38.19 38.19 Seoul POSCO Advanced Technical Staff Fund(*1) Investment in new technologies 15.87 15.86 Seoul POSCO 4th Industrial Revolution Fund(*1) Investment in new technologies 20.00 19.05 Seoul Pureun Tongyeong Enviro Co., Ltd. Sewerage treatment 20.40 20.40 Tongyeong Pure Gimpo Co., Ltd. Construction 28.79 28.79 Gimpo Posgreen Co., Ltd.(*1) Lime and plaster manufacturing 19.00 19.00 Gwangyang Clean Iksan Co., Ltd. Construction 23.50 23.50 Iksan Innovalley Co., Ltd. Real estate development 28.77 28.77 Yongin BLUE OCEAN Private Equity Fund Private equity financial 27.52 27.52 Seoul Western Inland highway CO.,LTD.(*4) Construction 20.39 — Incheon Pocheon-Hwado Highway Corp. Investment in Expressway 23.27 27.64 Incheon INNOPOLIS Job Creation Fund II(*1) Investment in new technologies 6.13 6.13 Seoul Samcheok Blue Power Co.,Ltd. Generation of electricity 34.00 34.00 Samcheok INKOTECH, INC.(*1) Electricity generation and sales 10.00 10.00 Seoul PCC Social Enterprise Fund II(*1) Investment in new technologies business 16.67 16.67 Seoul PCC Amberstone Private Equity Fund II(*1) Private equity trust 19.91 19.91 Seoul PCC-Conar Investment in new technologies business 14.68 15.34 Pohang HYOCHUN Co., Ltd(*1) Screen door operation and other 18.00 18.00 Seoul RPSD Project Co., Ltd(*4) Real estate development 29.00 — Incheon Ownership (%) Region Investee Category of business 2021 2022 [Domestic] PCC EV Fund(*3) Investment in new technologies business 18.18 — Pohang IBKC-PCC Investment in new technologies business 18.18 18.18 Pohang 2019 PCC Materials and Parts Fund(*1) Investment in new technologies business 8.70 8.70 Pohang PCC-Woori Investment in new technologies business 18.85 18.85 Pohang KPGE Inc.(*3) Wholesales and retail, generator material, trade 25.00 — Busan CURO CO.,LTD.(*1) Manufacturing, construction 0.54 0.53 Ulsan Link City PFV Inc. Contruction, housing construction and sales 44.00 44.00 Uijeongbu BNH-POSCO Investment in new technologies business 18.14 18.14 Pohang PCC-BM Investment in new technologies business 8.77 8.77 Pohang Energy Innovation Fund I(*1) Investment in new technologies business 10.11 10.11 Pohang Consus PS development Professional Private Real Estate Fund Real estate development 50.00 50.00 Seoul POSTECH Holdings 4th Fund Private Investment Association 40.00 40.00 Pohang SNU STH IP Fund Private Investment Association 33.33 33.33 Seoul PCC-BM Investment in new technologies business 13.70 13.70 Pohang G&G Technology Innovation Fund No.1(*1) Investment in new technologies business 13.97 13.97 Seongnam NPX-PCC Investment in new technologies business 19.96 19.96 Pohang C&-PCC Investment in new technologies business 0.68 0.68 Pohang 2020 POSCO-MOORIM Bio New Technology Fund(*1) Investment in new technologies business 5.00 5.00 Pohang PCC-KAI Investment in new technologies business 19.12 19.12 Seoul Human Eco-Land Sewage facilities management 27.95 — Ansan 2021 PCC Bio New Technology Fund(*1) Investment in new technologies 5.45 5.45 Pohang Consus BG Private Real Estate Fund No.2 Real estate development 50.00 50.00 Seoul Consus OS Private Real Estate Fund Real estate development 50.00 50.00 Seoul Consus NewDeal Infra Development Specialized Private Special Asset Investment Trust 1 Investment Association 40.00 40.00 Seoul Hybrid ESG Secondary Venture No.1(*1) Investment Association 18.27 18.27 Pohang PCC-Xinova PRE-IPO Investment in new technologies business — 9.09 Pohang PCC-Bailey Investment in new technologies business — 7.27 Pohang Erae Ams Co.,Ltd.(*1,2) Automotive parts manufacturing — 16.66 Daegu CR Inotech Co., Ltd.(*1,2) Manufacturing — 19.00 Gwangyang Posco JK Solid Solution Co., ltd.(*2) Material manufacturing for rechargeable battery — 40.00 Yangsan [Foreign] VSC POSCO Steel Corporation(*3) Steel processing and sales 50.00 — Vietnam POSCHROME (PROPRIETARY) LIMITED Raw material manufacturing and sales 50.00 50.00 South Africa CAML RESOURCES PTY LTD Raw material manufacturing and sales 33.34 33.34 Australia Nickel Mining Company SAS Raw material manufacturing and sales 49.00 49.00 New PT. Wampu Electric Power Construction and civil engineering 20.00 20.00 Indonesia POSK(Pinghu) Steel Processing Center Co., Ltd. Steel processing and sales 20.00 20.00 China PT.INDONESIA POS CHEMTECH CHOSUN Ref Refractory manufacturing and sales 30.19 30.19 Indonesia NS-Thainox Steel manufacturing and sales 49.00 49.00 Thailand Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd(*4) Tinplate manufacturing and sales 34.00 — China PT. Tanggamus Electric Power(*1) Construction and civil engineering 17.50 17.50 Indonesia LLP POSUK Titanium Titanium manufacturing and sales 35.30 35.30 Kazakhstan IMFA ALLOYS FINLEASE LTD Raw material manufacturing and sales 24.00 24.00 India Ownership (%) Region Investee Category of business 2021 2022 [Foreign] KRAKATAU POS-CHEM DONG-SUH Chemical by-product 19.00 19.00 Indonesia 9404-5515 Quebec Inc. Investments management 10.40 25.85 Canada Hamparan Mulya Resource development 45.00 45.00 Indonesia POS-SEAHSTEELWIRE(TIANJIN)CO.,Ltd. Steel manufacturing and sales 25.00 25.00 China Eureka Moly LLC Raw material manufacturing and sales 20.00 20.00 USA KIRIN VIETNAM CO., LTD(*1) Panel manufacturing 19.00 19.00 Vietnam POSCO SeAH Steel Wire(Nantong) Co., Ltd. Steel processing and sales 25.00 25.00 China POS-SeAH Steel manufacturing and sales 25.00 25.00 Thailand Jupiter Mines Limited(*1) Resource development 6.89 6.89 Australia SAMHWAN VINA CO., LTD(*1) Steel manufacturing and sales 19.00 19.00 Vietnam Saudi-Korean Company for Maintenance Properties Management LLC(*1) Building management 19.00 19.00 Saudi Arabia NCR LLC Coal sales 22.10 22.10 Canada AMCI (WA) PTY LTD Iron ore sales & mine development 49.00 49.00 Australia SHANGHAI LANSHENG DAEWOO CORP. Trading 49.00 49.00 China SHANGHAI WAIGAOQIAO FREE TRADE ZONE LANSHENG DAEWOO IN’L TRADING CO., LTD. Trading 49.00 49.00 China General Medicines Company Ltd. Medicine manufacturing and sales 33.00 33.00 Sudan KOREA LNG LTD. Gas production and sales 20.00 20.00 England AES-VCM Electricity generation 30.00 30.00 Vietnam South-East Asia Gas Pipeline Company Ltd. Pipeline construction and management 25.04 25.04 Myanmar GLOBAL KOMSCO Daewoo LLC Cotton celluloid manufacturing and sales 35.00 35.00 Uzbekistan POSCO-Poggenamp Electrical Steel Pvt. Ltd. Steel processing and sales 26.00 26.00 India Qingdao Pohang DGENX Stainless SteelPipeCo., Ltd Exhaust meter manufacturing 40.00 40.00 China SHINPOONG DAEWOO PHARMA VIETNAM CO.,LTD(*1) Medicine production 3.42 3.42 Vietnam ZHEJIANG HUAYOU-POSCO ESM CO., LTD Anode material Production 40.00 40.00 China MONG DUONG FINANCE HOLDINGS B.V. Financial Holdings 30.00 30.00 Netherlands FQM Australia Holdings Pty Ltd Non-ferrous metal Mining 30.00 30.00 Australia Qingdao ZhongShou New Energy Technology Co.,Ltd(*1) Artificial Graphite manufacturing 19.09 13.01 China Black Rock Mining LTD(*1) Mining 14.81 12.90 Australia Inner Mongolia Sinuo New Material Technology Co.,Ltd(*1,2) Artificial Graphite manufacturing — 12.85 China ZHANGJIAGANG XIAO-SHA Steel processing and sales — 17.50 China TMK Gulf International Pipe Industry L.L.C.(*1,2) Manufacturing — 6.77 Oman (*1) The Company has determined that it has significant influence even though the Company’s percentage of ownership is less than 20% considering the composition of board of directors. (*2) During the year ended December 31, 2022, the entities were newly included in associates due to acquisition or establishment. (*3) During the year ended December 31, 2022, the entities were excluded from associates due to liquidation. (*4) During the year ended December 31, 2022, the entities were excluded from associates due to sale of interest, etc.
Details of Joint Ventures	2) Joint ventures Details of joint ventures as of December 31, 2021 and 2022 are as follows: Ownership (%) Investee Category of business 2021 2022 Region [Domestic] POSCO MITSUBISHI CARBON TECHNOLOGY Steel processing and sales 60.00 60.00 Gwangyang POSCO-KB Investment in new technologies 18.75 18.75 Seoul POSCO-NSC Investment in new technologies 16.67 16.67 Seoul PoscoPlutus Project 3rd Project fund Investment in new technologies 5.96 5.96 Seoul PCC Bio 2nd Fund Investment in new technologies 19.72 19.72 Seoul Union PCC Portfolio Fund Investment in new technologies 14.12 14.12 Seoul Eco Energy Solution Co., ltd.(*2) Service — 50.00 Seoul [Foreign] KOBRASCO Steel materials manufacturing and sales 50.00 50.00 Brazil PT. POSMI Steel Indonesia(*1) Steel processing and sales 36.69 — Indonesia CSP—Compania Siderurgica do Pecem Steel manufacturing and sales 20.00 20.00 Brazil BX STEEL POSCO Cold Rolled Sheet Co., Ltd. Steel processing and sales 25.00 25.00 China POSCO-SAMSUNG-Slovakia Processing Center Steel processing and sales 30.00 30.00 Slovakia YULCHON MEXICO S.A. DE C.V. Tube for automobile manufacturing 11.85 11.85 Mexico Hyunson Engineering & Construction HYENCO Construction 4.89 4.89 Algeria POSCO E&C Saudi Arabia Civil engineering and construction 40.00 40.00 Saudi Arabia Pos-Austem Automotive parts manufacturing 19.90 19.90 China POS-InfraAuto Automotive parts manufacturing 16.20 16.20 China POS-AUSTEM Automotive parts manufacturing 11.10 11.10 China POS-AUSTEM Automotive parts manufacturing 7.43 7.43 China Kwanika Copper Corporation(*1) Energy & resource development 34.04 — Canada DMSA/AMSA Energy & resource development 3.89 3.89 Madagascar Roy Hill Holdings Pty Ltd Energy & resource development 12.50 12.50 Australia POSCO-NPS Mine development 50.00 50.00 USA HBIS-POSCO Automotive Steel Co., Ltd Steel manufacturing and sales 50.00 50.00 China (*1) During the year ended December 31, 2022, the entities were excluded from joint ventures due to sales of interest, etc. (*2) During the year ended December 31, 2022, the joint venture was newly established.
Consolidated Subsidiaries Acquired or Newly Established	(e) Newly included subsidiaries Consolidated subsidiaries acquired or newly established during the year ended December 31, 2022 are as follows: Company Date of addition Ownership (%) Reason Senex Holdings PTY LTD and subsidiaries K-A January 2022 50.10 New establishment POSCO March 2022 100.00 Spin-off from the controlling company Posco International Mexico e-Mobility March 2022 100.00 New establishment eSteel4U April 2022 61.12 New establishment POSCO social investment fund April 2022 70.00 New establishment POSCO CHEMICAL CANADA INC. June 2022 100.00 New establishment POSCO Silicon Solution Co., Ltd July 2022 100.00 New addition ULTIUM CAM GP INC. September 2022 85.00 New establishment ULTIUM CAM LIMITED PARTNERSHIP September 2022 85.00 New establishment POSCO(Wuhan) Automotive September 2022 100.00 Spin-off Consus Pf Private Real Estate Fund No.2 September 2022 66.70 New establishment POSCO BRAZIL LTDA October 2022 100.00 New establishment POSCO GS Eco Materials Co., Ltd October 2022 100.00 New establishment POSCO Lithium Solution Co., Ltd. December 2022 100.00 New establishment (*1) During the year ended December 31, 2022, K-A (*2) The subsidiary acquired 100% shares of Senex Energy Limited in April 2022.
Subsidiaries That Were Excluded From Consolidation	(f) Loss of controls Subsidiaries for which the Company has lost control during the year ended December 31, 2022 are as follows: Company Date of exclusion Reason POSCAN ELKVIEW COAL LTD. August 2022 Merged into POSCO Canada Ltd. 2015 POSCO New technology II Fund December 2022 Liquidation POSCO CHEMICAL Free Zone Enterprise December 2022 Liquidation

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Estimated Useful Lives of Property, Plant and Equipment	The estimated useful lives of property, plant and equipment are as follows: Buildings 5-50 years Structures 4-50 Machinery and equipment 4-25 Vehicles 3-20 Tools 3-10 Furniture and fixtures 3-20 Lease assets 2-30 Bearer plants 20 years
Estimated Useful Lives of Intangible Assets	Intellectual property rights 4-25 years Development expense 3-5 Port facilities usage rights 4-75 Other intangible assets 2-15

Financial risk management (Tabl

Financial risk management (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Disclosure of Financial Instruments Classified as Transition Not Yet Completed	Financial instruments classified as transition not yet completed as of December 31, 2022 are as follows: (in millions of Won) USD LIBOR(* 3) Category(* 4) Transition not Modification Non-derivative Loans ￦ 3,802 — Non-derivative Borrowings 2,553,006 15,971 Derivatives(* 2) Interest rate swap 35,781 7,357
Net Borrowing-to-Equity Ratio	Net borrowing-to-equity (in millions of Won) 2021 2022 Total borrowings ￦ 21,741,216 24,305,662 Less: Cash and cash equivalents 4,775,166 8,053,108 Net borrowings 16,966,050 16,252,554 Total equity 54,713,966 58,191,897 Net borrowings-to-equity 31.01 % 27.93 %

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Cash and Cash Equivalents	Cash and cash equivalents as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Cash ￦ 8,940 7,510 Demand deposits and checking accounts 2,310,431 2,826,227 Time deposits 947,904 2,638,838 Other cash equivalents 1,507,891 2,580,533 ￦ 4,775,166 8,053,108

Trade Accounts and Notes Rece_2

Trade Accounts and Notes Receivable (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [line items]
Summary of lease investment and net lease investment	(c) As of December 31, 2021 and 2022, the Company’s gross investment and net investment in the leases are as follows: (in millions of Won) 2021 2022 Less than 1 year ￦ 126 — Undiscounted lease payments 126 — Present value of minimum lease payment ￦ 126 —
Trade accounts and notes receivables, net [member]
Statement [line items]
Summary of Financial Assets	(a) Trade accounts and notes receivable as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Trade accounts and notes receivable ￦ 9,266,729 8,695,788 Finance lease receivables 126 — Unbilled Due from customers for contract work 1,027,039 1,340,146 Less: Allowance for doubtful accounts (314,955 ) (333,792 ) ￦ 9,978,939 9,702,142 Non-current Trade accounts and notes receivable ￦ 113,370 68,342 Less: Allowance for doubtful accounts (50,165 ) (44,309 ) ￦ 63,205 24,033
Finance lease receivables [member]
Statement [line items]
Summary of Financial Assets	(b) Finance lease receivables are as follows: (in millions of Won) Customer Contents 2021 2022 Officers and employees Songdo apartment rental contract ￦ 75 — ZHAOHUUI PROSPERITY INT’L LTD Office Rental 51 — ￦ 126 —

Other Receivables (Tables)

Other Receivables (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [LineItems]
Summary of lease investment and net lease investment	(c) As of December 31, 2021 and 2022, the Company’s gross investment and net investment in the leases are as follows: (in millions of Won) 2021 2022 Less than 1 year ￦ 126 — Undiscounted lease payments 126 — Present value of minimum lease payment ￦ 126 —
Other receivables [member]
Statement [LineItems]
Summary of Financial Assets	(a) The details of other receivables as of December 31, 2021 and 2022, are as follows: (in millions of Won) 2021 2022 Current Loans ￦ 331,692 278,346 Other accounts receivable 1,305,383 1,381,804 Accrued income 350,301 334,741 Deposits 130,011 131,468 Others 17,705 23,201 Lease receivables 63,568 46,764 Less: Allowance for doubtful accounts (94,051 ) (83,627 ) ￦ 2,104,609 2,112,697 Non-current Loans ￦ 884,990 1,082,139 Other accounts receivable 196,018 237,161 Accrued income 121,041 121,783 Deposits 390,971 292,722 Lease receivables 80,317 55,312 Less: Allowance for doubtful accounts (258,194 ) (268,786 ) ￦ 1,415,143 1,520,331
Summary of lease investment and net lease investment	(c) As of December 31, 2021 and 2022, total and net lease investments in the leases are as follows: (in millions of Won) 2021 2022 Less than 1 year ￦ 63,782 48,127 1 year - 3 years 58,589 19,861 3 years - 5 years 5,388 5,371 Over 5 years 52,634 64,811 Undiscounted lease payments 180,393 138,170 Unrealized interest income (36,508 ) (36,094 ) Present value of minimum lease payment ￦ 143,885 102,076
Lease receivables [member]
Statement [LineItems]
Summary of Financial Assets	(b) The details of lease receivables are as follows: (in millions of Won) Customer Leased items 2021 2022 Pohang University of Science and Technology Lease contract ￦ — 7,738 Korea Business Angels Association Lease contract — 2,621 HEUNG-A HEUNG-A 6 Container Ships, 4 Tankers 119,636 88,573 KOGAS, ONGC Videsh Limited, GAIL(India) Limited, Myanmar Oil and Gas Enterprise Helicopter, Ship, Office, Jetty 24,249 3,144 ￦ 143,885 102,076

Other Financial Assets (Tables)

Other Financial Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary Of Other Financial Assets	Other financial assets as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Derivatives assets ￦ 66,558 223,771 Debt securities 157,895 121,122 Deposit instruments(* 1,2) 2,709,171 2,558,946 Short-term financial instruments(* 2) 10,514,093 8,006,081 ￦ 13,447,717 10,909,920 Non-current Derivatives assets ￦ 182,538 136,224 Equity securities(* 3) 1,466,061 1,462,088 Debt securities 3,968 78,901 Other securities(* 3) 430,998 632,469 Deposit instruments(* 2) 36,109 22,856 ￦ 2,119,674 2,332,538 (*1) As of December 31, 2021, ￦ (*2) As of December 31, 2021 and 2022, financial instruments amounting to ￦ ￦ (*3) As of December 31, 2021 and 2022, ￦ ￦

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Inventories	(a) Inventories as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Finished goods ￦ 2,583,191 2,508,370 Merchandise 1,326,736 1,237,203 Semi-finished goods 2,902,717 3,453,150 Raw materials 3,777,112 4,171,049 Fuel and materials 917,906 1,109,100 Construction inventories 1,597,719 1,131,776 Materials-in-transit 3,051,786 2,738,439 Others 101,133 100,873 16,258,300 16,449,960 Less: Allowance for inventories valuation (161,929 ) (316,557 ) ￦ 16,096,371 16,133,403
Changes of Allowance for Inventories Valuation	(b) The changes in allowance for inventories valuation for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Beginning ￦ 216,143 131,642 161,929 Loss on valuation of inventories 54,014 78,783 259,678 Utilization on sale of inventories (132,707 ) (49,528 ) (97,749 ) Others (5,808 ) 1,032 (7,301 ) Ending ￦ 131,642 161,929 316,557

Assets Held for Sale (Tables)

Assets Held for Sale (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Details of Assets Held For Sale and Related Liabilities	Details of assets held for sale as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 The controlling Subsidiaries(*6) Total Subsidiaries(*3,6) Asset Cash and cash equivalents(*4) ￦ — 554 554 174 Account receivables and other receivables — 956 956 648 Investment stock in joint ventures(*5,7) — 13,044 13,044 — Property, plant and equipment 29,236 30,995 60,231 10,552 Intangible assets 553 2,977 3,530 — Others — 155 155 629 ￦ 29,789 48,681 78,470 12,003 Liability Others ￦ 185 4 189 5 (*1) During the year ended December 31, 2021, the Company sold the land in the Yanghak Neighborhood Park development reserve area that was classified as asset held for sale and the Company recognized ￦ (*2) During the year ended December 31, 2021, the Company decided to trade and exchange the emission rights and reclassified the emission rights to assets held for sale. After that, the Company recognized ￦ (*3) During the year ended December 31, 2021, the Company decided to dispose Synthetic Natural Gas (SNG) facility for which use was discontinued, and classified as asset held for sale for ￦ spin-off ￦ ￦ (*4) Cash and cash equivalents in the statement of cash flows include cash and cash equivalents that are classified as assets held for sale as of December 31, 2021 and December 31, 2022. (*5) During the year ended December 31, 2021, the Company decided to dispose of interests of POSCO(Guangdong) Automotive Steel Co, Ltd. which is classified investment in joint ventures as asset held for sale for ￦ ￦ (*6) During the year ended December 31, 2021, the Company decided to dispose of tangible and intangible assets of HUME COAL PTY LTD, a subsidiary, and classified as assets held for sale for ￦ ￦ (*7) During the year ended December 31, 2022, the Company decided to dispose of interests of CSP-Compania held-for-sale

Investments in Associates and_2

Investments in Associates and Joint ventures (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Investments in Associates and Joint Ventures	(a) Investments in associates and joint ventures as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Investments in associates ￦ 2,203,274 2,518,906 Investments in joint ventures 2,311,373 2,477,645 ￦ 4,514,647 4,996,551
Details of Investments in Associates	(b) Details of investments in associates as of December 31, 2021 and 2022 are as follows: (in millions of Won) Number of shares Ownership (%) Acquisition cost Book value Company 2021 2022 [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund 178,691,901,565 27.23 ￦ — ￦ 176,136 — Samcheok Blue Power Co.,Ltd.(*1) 4,507,138 34.00 429,904 382,887 352,500 SNNC 18,130,000 49.00 90,650 171,332 182,414 QSONE Co.,Ltd. 200,000 50.00 84,395 86,058 86,378 Chun-cheon Energy Co., Ltd(*1) 17,308,143 49.10 86,541 9,571 9,513 Western Inland highway CO.,LTD. — — — 53,563 — Pocheon-Hwado Highway Corp.(*1) 6,981,975 27.64 34,910 28,813 27,165 CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 1,181,160 29.53 5,906 19,191 14,605 Daesung Steel(*2) 108,038 17.54 14,000 19,073 20,469 PCC Amberstone Private Equity Fund 1(*2) 8,130,098,340 8.80 7,882 9,251 9,326 Others (58 companies)(*1) 107,035 151,708 1,062,910 854,078 [Foreign] South-East Asia Gas Pipeline Company Ltd. 135,219,000 25.04 132,907 238,601 290,318 AES-VCM — 30.00 164,303 182,639 209,594 9404-5515 Quebec Inc. 284,463,243 25.85 328,509 135,738 331,261 FQM Australia Holdings Pty Ltd 186,000,030 30.00 109,568 91,052 98,103 Eureka Moly LLC — 20.00 240,123 13,633 14,574 AMCI (WA) PTY LTD 49 49.00 209,664 67,972 57,830 NCR LLC — 22.10 181,535 102,319 187,372 KOREA LNG LTD. 2,400 20.00 135,205 31,340 29,124 Nickel Mining Company SAS 3,234,698 49.00 157,585 48,249 90,636 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 565,680,000 40.00 104,432 22,769 98,933 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd — — — 19,099 — PT. Wampu Electric Power(*1) 8,708,400 20.00 10,054 15,851 16,659 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 50 25.00 4,723 9,140 8,590 Others (29 companies)(*1) 161,962 231,834 1,140,364 1,664,828 ￦ 2,203,274 2,518,906 (*1) As of December 31, 2021 and 2022, investments in associates amounting to ￦ ￦ (*2) As of December 31, 2022, it was classified as an associate even though the Company’s ownership percentage is less than 20% since the Company has significant influence over the investee when considering the structure of its Board of Directors and others.
Details of Investments in Joint Ventures	(c) Details of investments in joint ventures as of December 31, 2021 and 2022 are as follows: (in millions of Won) Number of shares Ownership (%) Acquisition cost Book value Company 2021 2022 [Domestic] POSCO MITSUBISHI CARBON TECHNOLOGY 11,568,000 60.00 ￦ 115,680 ￦ 169,838 161,465 Others (6 companies) 6,676 8,845 176,514 170,310 [Foreign] Roy Hill Holdings Pty Ltd(*1) 13,117,972 12.50 1,528,672 1,346,712 1,418,022 POSCO-NPS 325,050,000 50.00 364,609 393,793 412,002 KOBRASCO 2,010,719,185 50.00 32,950 68,296 103,044 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. — 25.00 61,961 107,650 111,219 DMSA/AMSA(*1) — 3.89 346,880 24,144 23,740 CSP - Compania Siderurgica do Pecem(*2) 1,578,377,432 20.00 676,060 52,257 — HBIS-POSCO Automotive Steel Co., Ltd — 50.00 235,251 110,769 216,138 Others (9 companies) 31,238 23,170 2,134,859 2,307,335 ￦ 2,311,373 2,477,645 (*1) As of December 31, 2021 and December 31, 2022, the investments in joint ventures are provided as collateral in relation to the joint ventures’ borrowings. (*2) During the year ended December 31, 2022, the Company decided to dispose of CSP—Compania Siderurgica do Pecem and recognized the impairment loss of ￦
Changes in Investments in Associates and Joint Ventures	(d) The movements of investments in associates and joint ventures for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Company December 31, Acquisition Dividends Share of Other December 31, [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund ￦ 175,939 — — 197 — 176,136 Samcheok Blue Power Co.,Ltd. 145,092 250,495 (405 ) (4,248 ) (8,047 ) 382,887 SNNC 160,332 — (18,243 ) 29,314 (71 ) 171,332 QSONE Co.,Ltd. 86,004 — (1,140 ) 1,194 — 86,058 Chun-cheon Energy Co., Ltd 23,913 — — (15,094 ) 752 9,571 Western Inland highway CO.,LTD. 45,070 4,031 — (1,981 ) 6,443 53,563 NEXTRAIN CO., Ltd. 47,364 — — (127 ) (47,237 ) — Pocheon-Hwado Highway Corp. 13,721 13,954 — (2,679 ) 3,817 28,813 CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 17,137 — — 2,054 — 19,191 Daesung Steel 16,990 — — 2,083 — 19,073 PCC Amberstone Private Equity Fund 1 9,230 — (674 ) 977 (282 ) 9,251 POSCO MITSUBISHI CARBON TECHNOLOGY 153,457 — — 16,243 138 169,838 Others (62 companies) 117,486 38,021 (7,159 ) 6,399 (41,036 ) 113,711 1,011,735 306,501 (27,621 ) 34,332 (85,523 ) 1,239,424 [Foreign] South-East Asia Gas Pipeline Company Ltd. 199,342 — (27,828 ) 48,159 18,928 238,601 AES-VCM 158,777 — (28,623 ) 35,959 16,526 182,639 9404-5515 Quebec Inc. 123,296 — (16,999 ) 18,071 11,370 135,738 FQM Australia Holdings Pty Ltd — 109,568 (17,997 ) (519 ) 91,052 Eureka Moly LLC 43,520 — — (32,607 ) 2,720 13,633 AMCI (WA) PTY LTD 71,732 — — (5,986 ) 2,226 67,972 NCR LLC 46,608 44,797 — (2,016 ) 12,930 102,319 KOREA LNG LTD. 42,229 — (9,178 ) 9,145 (10,856 ) 31,340 Nickel Mining Company SAS 40,890 — — 7,243 116 48,249 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 22,147 — — (1,838 ) 2,460 22,769 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 15,181 — — 1,752 2,166 19,099 PT. Wampu Electric Power 12,716 — — 1,389 1,746 15,851 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 7,110 — — 675 1,355 9,140 Roy Hill Holdings Pty Ltd 1,418,056 — (522,947 ) 392,887 58,716 1,346,712 POSCO-NPS 353,725 — (20,479 ) 28,729 31,818 393,793 KOBRASCO 54,400 — (39,059 ) 52,118 837 68,296 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 91,270 — — 6,291 10,089 107,650 DMSA/AMSA 31,104 — — 674 (7,634 ) 24,144 CSP - Compania Siderurgica do Pecem — 19,176 — 22,398 10,683 52,257 HBIS-POSCO Automotive Steel Co., Ltd 109,057 — 1,636 76 110,769 Others (38 companies) 132,411 12,184 (4,713 ) 48,555 4,763 193,200 2,864,514 294,782 (669,826 ) 615,237 170,516 3,275,223 ￦ 3,876,249 601,283 (697,447 ) 649,569 84,993 4,514,647 (*1) Other increase or decrease represents the changes in investments in associates and joint ventures due to disposals and change in capital adjustments effect from translations of financial statements of foreign investees and others during the year ended December 31, 2021. 2) For the year ended December 31, 2022 (in millions of Won) Company December 31, Acquisition Dividends Share of Other December 31, [Domestic] EQP POSCO Global NO1 Natural Resources ￦ 176,136 — (143,170 ) 145,822 (178,788 ) — Samcheok Blue Power Co.,Ltd. 382,887 — (9,992 ) (19,354 ) (1,041 ) 352,500 SNNC 171,332 — (5,348 ) 15,484 946 182,414 QSONE Co.,Ltd. 86,058 — (1,100 ) 1,420 — 86,378 Chun-cheon Energy Co., Ltd 9,571 — — (802 ) 744 9,513 Western Inland highway CO.,LTD. 53,563 — — (125 ) (53,438 ) — Pocheon-Hwado Highway Corp. 28,813 5,519 — (4,683 ) (2,484 ) 27,165 CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 19,191 — — (453 ) (4,133 ) 14,605 Daesung Steel 19,073 — — 1,396 — 20,469 PCC Amberstone Private Equity Fund 1 9,251 — (652 ) 1,104 (377 ) 9,326 POSCO MITSUBISHI CARBON TECHNOLOGY 169,838 — (24,000 ) 15,604 23 161,465 Others (64 companies) 113,711 45,563 (4,368 ) (3,931 ) 9,578 160,553 1,239,424 51,082 (188,630 ) 151,482 (228,970 ) 1,024,388 [Foreign] South-East Asia Gas Pipeline Company Ltd. 238,601 — (14,541 ) 50,143 16,115 290,318 AES-VCM 182,639 — (33,174 ) 45,382 14,747 209,594 9404-5515 Quebec Inc.(*2) 135,738 172,316 (31,949 ) 25,195 29,961 331,261 FQM Australia Holdings Pty Ltd 91,052 166 6,885 98,103 Eureka Moly LLC 13,633 — — — 941 14,574 AMCI (WA) PTY LTD 67,972 — — (3,964 ) (6,178 ) 57,830 NCR LLC 102,319 82,798 — (2,338 ) 4,593 187,372 KOREA LNG LTD. 31,340 — (21,161 ) 21,027 (2,082 ) 29,124 Nickel Mining Company SAS 48,249 — — 42,169 218 90,636 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 22,769 82,010 — (1,302 ) (4,544 ) 98,933 Zhongyue POSCO (Qinhuangdao) Tinplate 19,099 — — 213 (19,312 ) — PT. Wampu Electric Power 15,851 — (2,474 ) 823 2,459 16,659 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 9,140 — — (220 ) (330 ) 8,590 Roy Hill Holdings Pty Ltd 1,346,712 — (233,592 ) 273,084 31,818 1,418,022 POSCO-NPS 393,793 — (34,909 ) 25,884 27,234 412,002 KOBRASCO 68,296 — (21,287 ) 48,267 7,768 103,044 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 107,650 — — 6,527 (2,958 ) 111,219 DMSA/AMSA 24,144 — — (2,108 ) 1,704 23,740 CSP - Compania Siderurgica do Pecem 52,257 — — (90,395 ) 38,138 — HBIS-POSCO Automotive Steel Co., Ltd 110,769 126,195 (10,515 ) (10,311 ) 216,138 Others (37 companies) 193,200 29,975 (56,527 ) 96,740 (8,384 ) 255,004 3,275,223 493,294 (449,614 ) 524,778 128,482 3,972,163 ￦ 4,514,647 544,376 (638,244 ) 676,260 (100,488 ) 4,996,551 (*1) Other increase or decrease represents the changes in investments in associates and joint ventures due to disposals and change in capital adjustments effect from translations of financial statements of foreign investees and others during the year ended December 31, 2022. (*2) During the year ended December 31, 2022, it was additionally acquired due to the in-kind (*3) During the year ended December 31, 2022, dividends were declared prior to liquidation. The Company recognized full impairment loss of ￦
Summarized Financial Information of Associates and Joint Ventures	(e) Summarized financial information of associates and joint ventures as of and for the years ended December 31, 2021 and 2022 are as follows: 1) December 31, 2021 (in millions of Won) Company Assets Liabilities Equity Sales Net income [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund ￦ 400,339 574 399,765 — 5,411 Samcheok Blue Power Co.,Ltd. 2,301,783 1,620,752 681,031 — (6,226 ) SNNC 628,075 236,726 391,349 869,815 75,125 QSONE Co.,Ltd. 251,158 79,042 172,116 17,962 2,388 Chun-cheon Energy Co., Ltd 616,111 528,683 87,428 327,534 (5,424 ) Western Inland highway CO.,LTD. 305,166 42,052 263,114 — (2,137 ) Pocheon-Hwado Highway Corp. 217,888 95,005 122,883 — (929 ) CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 56,418 21,740 34,678 45,543 6,957 Daesung Steel 176,458 99,112 77,346 113,706 11,868 PCC Amberstone Private Equity Fund 1 105,169 — 105,169 11,910 11,110 POSCO MITSUBISHI CARBON TECHNOLOGY 470,330 185,622 284,708 172,441 28,699 [Foreign] South-East Asia Gas Pipeline Company Ltd. 1,604,624 651,751 952,873 439,974 192,322 AES-VCM 1,677,096 1,084,900 592,196 366,205 119,863 9404-5515 Quebec Inc. 1,317,335 3 1,317,332 — 173,763 FQM Australia Holdings Pty Ltd 1,348,138 1,021,630 326,508 243,611 (64,143 ) KOREA LNG LTD. 157,060 357 156,703 47,843 45,724 Nickel Mining Company SAS 475,751 307,570 168,181 328,570 31,688 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 129,618 72,965 56,653 28,488 (4,680 ) Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 92,850 31,260 61,590 174,511 5,193 PT. Wampu Electric Power 209,172 132,917 76,255 20,288 6,946 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 89,809 54,517 35,292 117,461 2,595 Roy Hill Holdings Pty Ltd 9,165,759 2,227,659 6,938,100 8,839,084 3,740,696 POSCO-NPS 787,383 — 787,383 — 52,451 KOBRASCO 194,022 57,430 136,592 165,224 104,507 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 727,958 324,222 403,736 2,044,978 25,165 DMSA/AMSA 3,631,856 2,068,847 1,563,009 749,634 636,113 CSP - Compania Siderurgica do Pecem 3,777,391 3,542,398 234,993 2,570,010 653,370 HBIS-POSCO Automotive Steel Co., Ltd 502,645 261,765 240,880 482,696 3,272 2) December 31, 2022 (in millions of Won) Company Assets Liabilities Equity Sales Net income [Domestic] EQP POSCO Global NO1 Natural Resources Private Equity Fund ￦ 9,471 480 8,991 — 425,366 Samcheok Blue Power Co.,Ltd. 3,515,861 2,885,218 630,643 — (8,447 ) SNNC 667,440 274,801 392,639 986,557 10,273 QSONE Co.,Ltd. 253,078 80,322 172,756 18,753 2,840 Chun-cheon Energy Co., Ltd 634,842 527,190 107,652 585,610 20,224 Pocheon-Hwado Highway Corp. 366,163 244,455 121,708 — (1,175 ) CHUNGJU ENTERPRISE CITY DEVELOPMENT Co.,Ltd 24,926 5,769 19,157 17,189 (1,521 ) Daesung Steel 175,429 90,126 85,303 128,401 7,957 PCC Amberstone Private Equity Fund 1 106,024 — 106,024 13,877 12,546 POSCO MITSUBISHI CARBON TECHNOLOGY 447,604 175,229 272,375 252,246 27,628 [Foreign] South-East Asia Gas Pipeline Company Ltd. 1,705,670 546,262 1,159,408 447,696 200,246 AES-VCM 1,701,272 1,019,227 682,045 417,021 151,022 9404-5515 Quebec Inc. 1,397,061 — 1,397,061 — 182,708 FQM Australia Holdings Pty Ltd 1,458,318 1,131,628 326,690 493,202 (22,768 ) KOREA LNG LTD. 145,845 225 145,620 107,295 105,135 Nickel Mining Company SAS 539,318 279,291 260,027 379,922 91,008 ZHEJIANG HUAYOU-POSCO ESM CO., LTD 305,740 57,932 247,808 45,771 (3,176 ) PT. Wampu Electric Power 209,815 129,520 80,295 21,760 4,115 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 79,116 45,677 33,439 136,663 (992 ) Roy Hill Holdings Pty Ltd 9,859,888 2,152,428 7,707,460 7,706,908 2,542,223 POSCO-NPS 823,800 — 823,800 — 49,341 KOBRASCO 262,724 57,242 205,482 147,843 96,534 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. 663,509 245,499 418,010 1,881,946 26,106 DMSA/AMSA 3,022,659 2,412,377 610,282 1,368,730 (54,212 ) CSP - Compania Siderurgica do Pecem 4,422,752 3,678,956 743,796 3,101,132 500,082 HBIS-POSCO Automotive Steel Co., Ltd 712,633 270,668 441,965 473,494 (15,515 )
Summary of Changes in Unrecognized Accumulated Losses of Equity Accounted Investees due to Discontinue Use of Equity Method	(f) Changes in accumulated losses of equity-accounted investees that were not recognized since the Company discontinues the use of the equity method for the year ended December 31, 2022 were as follows: (in millions of Won) Company Beginning Increase Ending New Songdo International City Development, LLC ￦ 199,483 (64,988 ) 134,495 UITrans LRT Co., Ltd. 40,103 3,769 43,872 Clean Iksan Co., Ltd. 797 (94 ) 703 HYOCHUN Co., Ltd. 3,837 559 4,396 KIRIN VIETNAM CO., Ltd. 100 3 103 INKOTECH, INC. 612 (72 ) 540 POSTO-Poggenamp Electrical Steel Pvt, Ltd. 301 256 557 Gunggi Green Energy 448 3,848 4,296 Link City PFV Inc. — 5,452 5,452 Noeul Green Energy — 1,886 1,886 POHANG E&E Co., LTD — 6,391 6,391 ￦ 245,681 (42,990 ) 202,691

Joint Operations (Tables)

Joint Operations (Tables)	12 Months Ended
	Dec. 31, 2022
Investments accounted for using equity method [abstract]
Details of Significant Joint Operations	Details of significant joint operations that the Company is participating in as a party to a joint arrangement as of December 31, 2022 are as follows: Joint operations Operation Ownership (%) Location Myanmar A-1/A-3 Mine development and gas production 51.00 Myanmar Offshore Midstream Gas transportation facility 51.00 Myanmar Greenhills Mine Mine development 20.00 Canada Mt. Thorley J/V Mine development 20.00 Australia POSMAC J/V Mine development 20.00 Australia Samcheok Thermal Power Plant EPC (Unit 1, 2) Construction work Construction 49.00 Korea Sinansan Line Double Track Train Construction 36.00 Korea Panama Metro Line 3 Project construction work Construction 20.00 Panama 2*600 MW Matarbari Ultra Super Critical Coal-Fired Power construction Construction 67.00 Bangladesh Yangsan Sasong 2nd Apartment Project (B5,6,7,9 Block) Construction work Construction 49.00 Korea Yongmun 1, 2, 3 District Housing Reconstruction Maintenance Project Construction 70.00 Korea Songdo B5 Block officetel Project Construction work Construction 80.00 Korea Particle Accelerator Facility Construction work Construction 55.00 Korea Anyang Jinheung Apartment Construction work Construction 45.00 Korea

Investment Property, Net (Table

Investment Property, Net (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Investment Property	(a) Investment property as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Acquisition Accumulated Book value Acquisition cost Accumulated Book value Land ￦ 349,026 (16,718 ) 332,308 325,241 (16,718 ) 308,523 Buildings 803,156 (218,607 ) 584,549 825,183 (231,678 ) 593,505 Structures 3,213 (2,460 ) 753 3,569 (2,213 ) 1,356 Right of use assets 196,344 (27,877 ) 168,467 206,166 (35,519 ) 170,647 ￦ 1,351,739 (265,662 ) 1,086,077 1,360,159 (286,128 ) 1,074,031
Changes in Carrying Amount of Investment Property	1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Disposals Depreciation Others(*1) Ending Land ￦ 279,397 83,497 (1,092 ) — (29,494 ) 332,308 Buildings 559,584 11,378 (2,264 ) (21,362 ) 37,213 584,549 Structures 1,199 — — (598 ) 152 753 Right of use assets 154,601 — — (4,364 ) 18,230 168,467 ￦ 994,781 94,875 (3,356 ) (26,324 ) 26,101 1,086,077 (*1) Includes reclassification resulting from changing purpose of use, adjustment of foreign currency translation difference and others. 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Disposals Depreciation Others(*1) Ending Land ￦ 332,308 — (2,921 ) — (20,864 ) 308,523 Buildings 584,549 1,661 (34 ) (28,336 ) 35,665 593,505 Structures 753 — — (797 ) 1,400 1,356 Right of use assets 168,467 — (21,151 ) (6,888 ) 30,219 170,647 ￦ 1,086,077 1,661 (24,106 ) (36,021 ) 46,420 1,074,031 (*1) Includes reclassification resulting from changing purpose of use, adjustment of foreign currency translation difference and others.

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Property, Plant and Equipment	(a) Property, plant and equipment as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Acquisition Accumulated Government Book value Acquisition Accumulated Government Book value Land ￦ 2,702,768 (53 ) — 2,702,715 3,103,218 (53 ) — 3,103,165 Buildings 9,802,539 (5,592,600 ) (5,489 ) 4,204,450 10,102,634 (5,922,285 ) (5,455 ) 4,174,894 Structures 6,683,546 (3,551,692 ) (59 ) 3,131,795 6,989,634 (3,826,658 ) (49 ) 3,162,927 Machinery and equipment 50,090,721 (33,663,244 ) (7,321 ) 16,420,156 52,198,121 (35,767,810 ) (7,481 ) 16,422,830 Vehicles 324,073 (277,437 ) (606 ) 46,030 337,932 (284,897 ) (904 ) 52,131 Tools 453,297 (375,212 ) (290 ) 77,795 497,173 (405,844 ) (368 ) 90,961 Furniture and fixtures 752,314 (585,881 ) (271 ) 166,162 796,405 (622,944 ) (116 ) 173,345 Lease assets 1,288,639 (420,893 ) — 867,746 1,299,779 (378,581 ) — 921,198 Bearer plants 185,234 (30,552 ) — 154,682 180,486 (38,766 ) — 141,720 Construction-in- progress 1,961,033 (125,620 ) (10,246 ) 1,825,167 3,621,269 (73,266 ) (9,978 ) 3,538,025 ￦ 74,244,164 (44,623,184 ) (24,282 ) 29,596,698 79,126,651 (47,321,104 ) (24,351 ) 31,781,196
Changes in Carrying Amount of Property, Plant and Equipment	(b) Changes in the carrying amount of property, plant and equipment for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Disposals Depreciation Impairment Others(*4) Ending Land ￦ 2,590,087 66,015 (117 ) — 5,670 41,060 2,702,715 Buildings 4,161,400 22,559 (4,001 ) (316,999 ) (32,863 ) 374,354 4,204,450 Structures 3,025,226 15,728 (15,727 ) (233,370 ) (4,900 ) 344,838 3,131,795 Machinery and equipment 16,857,307 206,564 (31,769 ) (2,283,704 ) (77,173 ) 1,748,931 16,420,156 Vehicles 37,156 14,896 (832 ) (15,242 ) (58 ) 10,110 46,030 Tools 60,301 21,802 (782 ) (30,864 ) (69 ) 27,407 77,795 Furniture and fixtures 127,459 28,178 (1,630 ) (47,135 ) (667 ) 59,957 166,162 Lease assets 773,700 224,667 (8,320 ) (172,443 ) (1,547 ) 51,689 867,746 Bearer plants 149,965 — (24,876 ) (9,264 ) — 38,857 154,682 Construction-in-progress 1,617,540 2,838,175 (10,789 ) — (190,556 ) (2,429,203 ) 1,825,167 ￦ 29,400,141 3,438,584 (98,843 ) (3,109,021 ) (302,163 ) 268,000 29,596,698 (*1) The Company estimated the recoverable amount of individual assets that it ceased their use due to the disposal plan and others at fair value less costs to sell based on sale price or scrap value and recognized an impairment loss since recoverable amounts are less than their carrying amounts for the year ended December 31, 2021. During the year ended December 31, 2021, the Company recognized impairment losses on damaged assets caused by the fire accident. (*2) The Company decided to stop the intended use for Synthetic Natural Gas (SNG) facility and sell the related assets. The Company estimated the recoverable amount based on expected sale price and recognized ￦ (*3) During the year ended December 31, 2021, evidence of impairment occurred due to changes in the quality of bituminous coal and changes in production plans at Narrabri Coal Mine where POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD, a subsidiary of the Company, participates as a non-operating ￦ (*4) Represents assets transferred from construction-in-progress 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Business Disposals Depreciation Impairment Others(*1) Ending Land ￦ 2,702,715 89,357 248,858 (1,247 ) — — 63,482 3,103,165 Buildings 4,204,450 127,837 37,741 (9,957 ) (317,350 ) (11,230 ) 143,403 4,174,894 Structures 3,131,795 82,130 38,535 (3,274 ) (253,996 ) (5,084 ) 172,821 3,162,927 Machinery and equipment 16,420,156 597,172 1,216 (33,511 ) (2,303,917 ) (184,706 ) 1,926,420 16,422,830 Vehicles 46,030 15,592 902 (1,017 ) (18,717 ) (123 ) 9,464 52,131 Tools 77,795 32,386 203 (187 ) (37,170 ) (351 ) 18,285 90,961 Furniture and fixtures 166,162 33,936 1,963 (1,175 ) (59,359 ) (1,990 ) 33,808 173,345 Lease assets 867,746 184,260 193,572 (22,029 ) (168,521 ) — (133,830 ) 921,198 Bearer plants 154,682 — — — (9,691 ) — (3,271 ) 141,720 Construction-in-progress 1,825,167 3,947,703 11,111 (383 ) — (9,699 ) (2,235,874 ) 3,538,025 ￦ 29,596,698 5,110,373 534,101 (72,780 ) (3,168,721 ) (213,183 ) (5,292 ) 31,781,196 (*1) Represents assets transferred from construction-in-progress (*2) Represents increases in property, plant and equipment due to business combination upon acquisition of Senex Energy Limited during the year ended December 31, 2022. (*3) The Company estimated the recoverable amounts (net fair value) , ￦
Borrowing Costs Capitalized and Capitalized Interest Rate	(c) Borrowing costs capitalized and the capitalized interest rate for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Weighted average expenditure ￦ 932,298 1,230,145 1,657,425 Borrowing costs capitalized 29,653 31,295 44,264 Capitalization rate (%) 3.14 ~ 3.18 2.25 ~ 3.16 2.39 ~ 3.85
Property, Plant and Equipment and Investment Property Pledged as Collateral	(d) Property, plant and equipment and investment property pledged as collateral as of December 31, 2021 and 2022 are as follows: (in millions of Won) Book value Collateral right holder 2021 2022 Land Korean Development Bank ￦ 933,560 1,161,696 Buildings and structures Korean Development Bank 1,598,040 1,449,066 Machinery and equipment Korean Development Bank 2,286,656 2,123,621 ￦ 4,818,256 4,734,383
Summary of changes in right of use assets property plant and equipment	(e) Changes in the carrying amount of right of use assets presented as investment property and property, plant and equipment for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Depreciation Others Ending Land ￦ 371,719 14,161 (14,191 ) 19,757 391,446 Buildings and structures 171,760 30,912 (61,261 ) 2,443 143,854 Machinery and equipment 239,181 13,543 (41,721 ) 45,202 256,205 Vehicles 11,456 12,159 (8,657 ) (205 ) 14,753 Ships 106,555 120,217 (16,716 ) — 210,056 others 27,630 33,675 (34,261 ) (7,145 ) 19,899 ￦ 928,301 224,667 (176,807 ) 60,052 1,036,213 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Business Depreciation Others Ending Land ￦ 391,446 18,077 — (16,843 ) (24,513 ) 368,167 Buildings and structures 143,854 74,454 6,714 (50,397 ) (10,977 ) 163,648 Machinery and equipment 256,205 43,088 175,795 (56,333 ) (99,734 ) 319,021 Vehicles 14,753 12,467 98 (12,015 ) 3,349 18,652 Ships 210,056 23,793 — (18,355 ) 2 215,496 others 19,899 12,381 10,965 (21,467 ) (14,916 ) 6,862 ￦ 1,036,213 184,260 193,572 (175,410 ) (146,789 ) 1,091,846 (*1) Represents increases in right-in-use
Summary of lease expense recognised in the income statement	(f) The amount recognized in profit or loss related to leases for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Interest on lease liabilities ￦ 36,373 32,331 34,936 Expenses related to short-term leases 18,809 20,885 29,931 Expenses related to leases of low-value 14,375 18,577 17,877 ￦ 69,557 71,793 82,744

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Goodwill and Other Intangible Assets	(a) Goodwill and other intangible assets as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Acquisition Accumulated Government Book value Acquisition Accumulated Government Book value Goodwill ￦ 1,648,119 (912,150 ) — 735,969 1,723,974 (1,281,487 ) — 442,487 Intellectual property rights 3,987,689 (1,761,881 ) — 2,225,808 4,944,973 (1,808,901 ) — 3,136,072 Membership 146,043 (3,673 ) — 142,370 135,905 (2,963 ) — 132,942 Development expense 656,712 (502,739 ) — 153,973 687,437 (571,266 ) — 116,171 Port facilities usage rights 685,540 (469,519 ) — 216,021 681,530 (484,319 ) — 197,211 Exploration and evaluation assets 280,092 (218,135 ) — 61,957 260,548 (159,557 ) — 100,991 Development assets — — — — 78,970 — — 78,970 Customer relationships 865,622 (579,902 ) — 285,720 865,691 (624,380 ) — 241,311 Other intangible assets 1,098,320 (753,790 ) (39 ) 344,491 1,175,409 (783,088 ) (25 ) 392,296 ￦ 9,368,137 (5,201,789 ) (39 ) 4,166,309 10,554,437 (5,715,961 ) (25 ) 4,838,451
Changes in Carrying Amount of Goodwill and Other Intangible Assets	1) For the year ended December 31, 2021 (in millions of Won) Beginning Acquisitions Disposals Amortization Impairment Others(*3) Ending Goodwill ￦ 903,893 17,804 — — (189,167 ) 3,439 735,969 Intellectual property rights 2,170,738 281,544 (574 ) (271,931 ) (20,005 ) 66,036 2,225,808 Membership(*1) 138,703 7,457 (4,198 ) (137 ) 145 400 142,370 Development expense 227,111 11,301 — (72,294 ) (4,027 ) (8,118 ) 153,973 Port facilities usage rights 236,272 — — (20,581 ) — 330 216,021 Exploratation and evaluation assets 57,140 3,649 — — (374 ) 1,542 61,957 Customer relationships 330,247 — — (44,478 ) — (49 ) 285,720 Other intangible assets 385,328 68,253 (14,818 ) (34,679 ) (10,032 ) (49,561 ) 344,491 ￦ 4,449,432 390,008 (19,590 ) (444,100 ) (223,460 ) 14,019 4,166,309 (*1) Economic useful life of membership is indefinite. (*2) During the year ended December 31, 2021, the Company decided to sell a portion of paid-in ￦ (*3) Represents assets transferred from construction-in-progress (*4) During the year ended December 31, 2021, evidence of impairment has occurred due to changes in the quality of bituminous coal and changes in production plans at Narrabri Coal Mine where POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD, a subsidiary of the Company, participates as a non-operating ￦ (*5) During the year ended December 31, 2021, impairment loss of ￦ 2) For the year ended December 31, 2022 (in millions of Won) Beginning Acquisitions Business Disposals Amortization Impairment Others(*2) Ending Goodwill ￦ 735,969 — 66,206 — — (369,337 ) 9,649 442,487 Intellectual property rights 2,225,808 354,179 912,971 (582 ) (326,494 ) 379 (30,189 ) 3,136,072 Membership(*1) 142,370 9,230 — (2,082 ) (145 ) 854 (17,285 ) 132,942 Development expense 153,973 1,800 — (13 ) (67,446 ) (1,046 ) 28,903 116,171 Port facilities usage rights 216,021 — — — (14,800 ) — (4,010 ) 197,211 Exploratation and evaluation assets 61,957 24,583 21,266 — — — (6,815 ) 100,991 Development assets — 6,607 76,591 — — — (4,228 ) 78,970 Customer relationships 285,720 — — — (44,478 ) — 69 241,311 Other intangible assets 344,491 99,388 26,649 (145 ) (35,472 ) (232 ) (42,383 ) 392,296 ￦ 4,166,309 495,787 1,103,683 (2,822 ) (488,835 ) (369,382 ) (66,289 ) 4,838,451 (* 1 Economic useful life of membership is indefinite. (* 2 Represents assets transferred from construction-in-progress (* 3 Represents increases in intangible assets upon acquisition of Senex Energy Limited during the year ended December 31, 2022. (* 4 Represents increases in intangible assets upon acquisition of POSCO Silicon Solution Co., Ltd (formerly, TERA TECHNOS CO., Ltd.) during the year ended December 31, 2022.
Allocation of Goodwill to Individually Operating Entities Which are Determined to be CGUs	(c) For the purpose of impairment testing, goodwill is allocated to individual operating entities each of which is determined to be a CGU. The goodwill amounts as of December 31, 2021 and 2022 are as follows: (in millions of Won) Reportable segments Total number of 2021 2022 CGUs 2021 2022 Steel 7 10 POSCO VST CO., LTD. ￦ 36,955 36,955 POSCO Center Beijing(*2) 178 173 Others 12,542 13,741 Green Tranding Infrastructure(*3) 3 3 POSCO INTERNATIONAL Corporation(*1) 578,046 240,092 GRAIN TERMINAL HOLDING PTE. LTD. 21,516 — PT. Bio Inti Agrindo 7,468 7,270 E&C 2 2 POSCO ENGINEERING & CONSTRUCTION CO., LTD. 24,868 24,868 POSCO O&M Co., Ltd — 35,728 Energy, etc(*3) — 2 POSCO ENERGY CO., LTD. 26,471 26,471 Shinhan Green Energy Co Ltd 17,804 17,804 Green Materials(*3) — 3 POSCO CHEMICAL CO., LTD 8,800 8,800 Posco Silicon Solution Co., Ltd — 30,477 Zhangjiagang Pohang Refractions Co., Ltd. 108 108 Others(*3) 5 — Others 1,213 — 17 20 ￦ 735,969 442,487 (*1) The recoverable amount of POSCO INTERNATIONAL Corporation, a subsidiary in trading segment of the green infrastructure business, is determined based on its value in use. As of December 31, 2022, the value in use is estimated by applying an 8.97% (2021: 8.14%) post-tax 5-year ￦ The Company calculated the value in use by discounting the post-tax post-tax pre-tax pre-tax The value in use of the CGU is sensitive to assumptions such as discount rate, terminal growth and estimated sales ￦ ￦ (*2) During the year ended December 31, 2022, the entity was changed from the construction segment to the steel segment. (*3) As a result of the reorganization of business segments during the year ended December 31, 2022, the others segment from the previous year was subdivided into energy and others segment and green materials and energy segment. In addition, trading, construction and energy and other segments were presented under the green infrastructure business .

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Other Current Assets and Other Non-Current Assets	Other current assets and other non-current (in millions of Won) 2021 2022 Current Advance payments ￦ 564,196 782,439 Prepaid expenses 274,023 263,536 Firm commitment asset 11,323 9,674 Others 65,816 20,290 ￦ 915,358 1,075,939 Non-current Long-term advance payments ￦ 47,752 23,429 Long-term prepaid expenses 76,739 53,803 Others(*1) 74,116 90,141 ￦ 198,607 167,373 (*1) As of December 31, 2021 and 2022, the Company recognized tax assets amounting to ￦ ￦

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [LineItems]
Summary of Borrowings	(a) Short-term borrowings and current portion of long-term borrowings as of December 31, 2021 and 2022 are as follows: (in millions of Won) Bank Issuance date Maturity date Interest 2021 2022 Short-term borrowings Bank overdrafts JP Morgan and others March, 2022~ December, 2022 January, 2023~ December, 2023 1.20~7.38 ￦ 118,558 197,718 Short-term borrowings HSBC and others January, 2022~ December, 2022 January, 2023~ December, 2023 0.22~18.20 4,991,866 6,635,402 5,110,424 6,833,120 Current portion of long-term liabilities Current portion of long-term borrowings Export-Import Bank of Korea and others November, 2004~October, 2022 February, 2023~ December, 2023 0.75~16.50 992,154 2,302,592 Current portion of debentures Merrill lynch and others October, 2013~ September, 2021 January, 2023~ October, 2023 1.44~5.99 2,731,321 2,782,049 Less: Current portion of discount on debentures issued (3,832 ) (1,767 ) 3,719,643 5,082,874 ￦ 8,830,067 11,915,994
Summary Disclosure of Detailed Information about Exchangeable Bonds Explanatory	Foreign currency exchangable bonds Type of bond Exchangable bonds Aggregate principal amount EUR 1,065,900,000 Interest rate - Coupon rate : - - Yield to Maturity : (0.78%) Maturity date September 1, 2026 Redemption 1) Redemption at Maturity : Outstanding bond principal, which is not repaid early or which call option is not exercised on, is repaid at maturity as a lump sum 2) Prepayment : The issuer has call option and the bondholders have put option Exchange rate 100% Exchange price (Won/share) 463,438(*) Underlying shares exchange Registered common shares (treasury shares) Exchange period From October 12, 2021 to August 22, 2026 Adjustments for exchange price Adjusting the exchange price according to the terms and conditions of the bond in the events of reason for adjusting the exchange price such as, bonus issue, share split, share consolidation, change of share type, issuannce of options or warranties to shareholders, share dividend, cash dividend, issuance of new shares under the market price. Put option by bondholders - 3 years(September 1, 2024) from the closing date - In the event of a change of control of the Company - Where the shares issued by the Company are delisted (or suspended for more than 30 consecutive trading days) Call option by the Issuer - Share price(based on closing price) is higher than 130% of exchange price for more than 20 trading days during 30 consecutive trading days in a row, after 3 years (September 1, 2024) from the closing day to 30 business days before the maturity of bonds. - When the outstanding balance of outstanding bonds is less than 10% of the total issuance(Clean-Up - Where additional reasons for tax burden arise due to the amendment of relevant laws and regulations, etc. (*) The exchange price has changed due to cash dividends during the year ended December 31, 2022. The Company has designated exchangeable bonds listed on the Singapore Stock Exchange as financial liabilities measured at fair value through profit or loss. The quoted transaction price is used in fair value measurement, and changes in fair value are recognized in profit or loss.
Summary of Assets Pledges as Collateral	(c) Assets pledged as collateral with regard to the borrowings as of December 31, 2022 are as follows: (in millions of Won) Bank Book value Pledged Property, plant and equipment and Investment property Korea Development Bank and others ￦ 4,666,691 6,044,317 Trade accounts and notes receivable Korea Development Bank and others 215,133 215,133 Financial instruments Woori Bank and others 16,923 16,924 ￦ 4,898,747 6,276,374
Long-term borrowings [member]
Statement [LineItems]
Summary of Borrowings	(b) Long-term borrowings, excluding current portion as of December 31, 2021 and 2022 are as follows: (in millions of Won) Bank Issuance date Maturity date Interest 2021 2022 Long-term borrowings Export-Import Bank of Korea and others September, 2001~ November, 2022 July, 2024~ March, 2040 0.19~8.50 ￦ 3,841,375 2,718,212 Less: Present value discount (12,530 ) (8,951 ) Bonds KB Securities co.,Ltd. and others July, 2015~ October, 2022 January, 2024~ May, 2032 0.50~4.60 7,671,755 8,351,006 Less: Discount on debentures issued (24,644 ) (28,893 ) Exchangeable bonds(*1) Foreign currency exchangeable bonds September, 2021 September, 2026 1,435,193 1,358,294 ￦ 12,911,149 12,389,668

Other Payables (Tables)

Other Payables (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [LineItems]
Summary of Financial Liabilities	Other financial liabilities as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Derivatives liabilities ￦ 91,739 95,157 Financial guarantee liabilities 19,902 11,370 ￦ 111,641 106,527 Non-current Derivatives liabilities ￦ 18,300 79,984 Financial guarantee liabilities 5,696 7,068 ￦ 23,996 87,052
Other payables [member]
Statement [LineItems]
Summary of Financial Liabilities	Other payables as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Accounts payable ￦ 1,034,823 1,423,402 Accrued expenses 835,226 981,609 Dividend payable 4,046 4,371 Lease liabilities 181,774 149,384 Withholdings 133,492 307,102 ￦ 2,189,361 2,865,868 Non-current Accounts payable ￦ 17,312 15,713 Accrued expenses 8,760 8,102 Lease liabilities 596,240 674,098 Long-term withholdings 56,697 92,489 ￦ 679,009 790,402

Provisions (Tables)

Provisions (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Provisions	(a) Provisions as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Non-current Current Non-current Provision for bonus payments ￦ 93,502 45,031 136,275 33,157 Provision for construction warranties 14,519 222,141 35,702 170,272 Provision for legal contingencies and claims(*1) 24,441 69,050 46,823 59,518 Provision for the restoration(*2,3) 5,918 153,613 6,049 185,097 Others(*4,5,6) 261,604 99,257 291,139 131,874 ￦ 399,984 589,092 515,988 579,918 (*1) The Company recognized probable outflow of resources amounting to ￦ ￦ (*2) Due to contamination of lands near the Company’s magnesium smelting plant located in Gangneung province and others, the Company recognized present values of estimated costs for recovery amounting to ￦ (*3) Due to contamination of river water quality near Greenhills mine which POSCO CANADA LTD. owns, the Company recognized present values of estimated costs for recovery amounting to ￦ (*4) As of December 31, 2021 and 2022, POSCO ENERGY CO., LTD., and Korea Fuel Cell, recognized ￦ ￦ (*5) As of December 31, 2021 and 2022, the Company has recognized emission liabilities amounting to ￦ ￦ (*6) According to the Act on the promotion of the development, use and diffusion of new and reneable energy, POSCO Energy Co., Ltd. is obliged to supply a certain amount of power generated by new and renewable energy. In accordance with the Act, POSCO Energy Co., Ltd. estimated the cost required to fulfill its obligations, such as insufficient supply of power using new and renewable energy to be borne, and as of December 31, 2021 and 2022, the Company recognized ￦ ￦
Changes in Provisions	(c) Changes in provisions for the years ended December 31, 2021 and 2022 were as follows: 1) For the year ended December 31, 2021 (in millions of Won) Beginning Increase Utilization Reversal Others(*1) Ending Provision for bonus payments ￦ 121,951 160,893 (138,003 ) (4,989 ) (1,319 ) 138,533 Provision for construction warranties 227,097 79,518 (67,196 ) (3,080 ) 321 236,660 Provision for legal contingencies and claims 87,450 66,395 (28,400 ) (32,731 ) 777 93,491 Provision for the restoration 139,745 29,456 (7,646 ) (11,129 ) 9,105 159,531 Others 389,999 291,284 (185,066 ) (119,633 ) (15,723 ) 360,861 ￦ 966,242 627,546 (426,311 ) (171,562 ) (6,839 ) 989,076 (*1) Includes adjustments of foreign currency translation differences and others. 2) For the year ended December 31, 2022 (in millions of Won) Beginning Increase Utilization Reversal Others(*1) Ending Provision for bonus payments ￦ 138,533 176,677 (137,092 ) (5,813 ) (2,873 ) 169,432 Provision for construction warranties 236,660 52,438 (73,853 ) (8,287 ) (984 ) 205,974 Provision for legal contingencies and claims 93,491 47,344 (33,175 ) (8,654 ) 7,335 106,341 Provision for the restoration 159,531 45,130 (43,168 ) (1,299 ) 30,952 191,146 Others 360,861 317,621 (203,985 ) (60,738 ) 9,254 423,013 ￦ 989,076 639,210 (491,273 ) (84,791 ) 43,684 1,095,906 (*1) Includes adjustments of foreign currency translation differences and others.

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Expense Related to Post-employment Benefit Plans under Defined Contribution Plans	(a) Defined contribution plans The expenses related to post-employment benefit plans under defined contribution plans for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Expense related to post-employment benefit plans under defined contribution plans ￦ 50,694 54,527 62,467
Amounts Recognized in Relation to Net Defined Benefit Liabilities in Statements of Financial Position	(b) Defined benefit plans 1) The amounts recognized in relation to net defined benefit liabilities in the statements of financial position as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Present value of funded obligations ￦ 2,401,261 2,200,127 Fair value of plan assets(*1) (2,620,046 ) (2,703,639 ) Present value of non-funded 13,770 20,560 Net defined benefit liabilities ￦ (205,015 ) (482,952 ) (*1) As of December 31, 2021 and 2022, the Company recognized net defined ￦ ￦
Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets	(in millions of Won) 2021 2022 Defined benefit obligations at the beginning of year ￦ 2,453,353 2,415,031 Current service costs 243,029 235,007 Interest costs 52,118 71,348 Remeasurements : (78,888 ) (192,339 ) - Loss (gain) from change in financial assumptions (159,154 ) (381,800 ) - Loss (gain) from change in demographic assumptions 1,512 (621 ) - Loss (gain) from change in others 78,754 190,082 Benefits paid (253,208 ) (300,353 ) Others (1,373 ) (8,007 ) Defined benefit obligations at the end of year ￦ 2,415,031 2,220,687 3) Changes in fair value of plan assets for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Fair value of plan assets at the beginning of year ￦ 2,397,717 2,620,046 Interest on plan assets 51,580 77,745 Remeasurement of plan assets (9,529 ) (57,335 ) Contributions to plan assets 417,486 346,773 Benefits paid (230,938 ) (287,312 ) Others (6,270 ) 3,722 Fair value of plan assets at the end of year ￦ 2,620,046 2,703,639
Fair Value of Plan Assets	4) The fair value of plan assets as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Equity instruments ￦ 23,980 5,949 Debt instruments 811,498 758,250 Deposits 1,724,245 1,813,863 Others 60,323 125,577 ￦ 2,620,046 2,703,639
Amounts Recognized in Consolidated Statements of Comprehensive Income	5) The amounts recognized in consolidated statement of comprehensive income for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Current service costs ￦ 245,047 243,029 235,007 Net interest costs(*1) 3,277 538 (6,397 ) ￦ 248,324 243,567 228,610 (*1) The actual return on plan assets amounted to ￦ ￦ ￦ The expenses by function were as follows: (in millions of Won) 2020 2021 2022 Cost of sales ￦ 177,223 166,734 156,576 Selling and administrative expenses 69,256 76,265 71,060 Others 1,845 568 974 ￦ 248,324 243,567 228,610
Accumulated Actuarial Gains (Losses), Net of Tax Recognized in Other Comprehensive Income	6) Accumulated actuarial gains (losses), net of tax recognized in other comprehensive income for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Beginning ￦ (589,796 ) (553,221 ) (502,066 ) Current actuarial gains (losses) 36,575 51,155 105,769 Ending ￦ (553,221 ) (502,066 ) (396,297 )
Principal Actuarial Assumptions	7) The principal actuarial assumptions as of December 31, 2021 and 2022 are as follows: (%) 2021 2022 Discount rate 1.25 ~ 7.84 2.00 ~ 7.60 Expected future increase in salaries(*1) 1.50 ~ 11.50 1.50 ~ 12.20 (*1) The expected future increase in salaries is based on the average salary increase rate for the past 5 years.
Changes to Defined Benefit Obligation Due to Reasonably Possible Changes to one of the Relevant Actuarial Assumptions	8) Reasonably possible changes at the reporting date to one of the relevant actuarial assumptions, holding the other assumptions constant, would have affected the defined benefit obligation by the amounts shown below: (in millions of Won) 1% Increase 1% Decrease Amount Percentage(%) Amount Percentage(%) Discount rate ￦ (129,873 ) (5.8 ) 146,641 6.6 Expected future increase in salaries 146,953 6.6 (132,348 ) (6.0 )
Maturity of Expected Benefit Payments	9) As of December 31, 2022, the maturity of the expected benefit payments are as follows: (in millions of Won) Within 1 year 5 years - 10 years 10 years After Total Benefits to be paid ￦ 328,477 832,597 650,418 1,087,836 421,889 3,321,217

Other Liabilities (Tables)

Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Other Liabilities	Other liabilities as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Current Due to customers for contract work ￦ 813,207 756,316 Advances received 845,652 787,477 Unearned revenue 106,574 62,030 Withholdings 340,107 369,067 Firm commitment liability 11,852 7,566 Others(*1) 14,844 24,375 ￦ 2,132,236 2,006,831 Non-current Advances received ￦ 730,505 433,958 Unearned revenue 27,908 22,203 Others(*1) 28,583 129,673 ￦ 786,996 585,834 (*1) As of December 31, 2022, the Company recognized the liabilities assumed amounted to ￦

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [LineItems]
Summary of Carrying Amount and Fair Values of Financial Assets and Financial Liabilities by Fair value	(a) Classification and fair value of financial instruments 1) The carrying amount and the fair values of financial assets and financial liabilities by fair value hierarchy as of December 31, 2021 and 2022 are as follows: ① (in millions of Won) Fair value Book value Level 1 Level 2 Level 3 Total Financial assets Fair value through profit or loss Derivative assets ￦ 241,541 — 241,541 — 241,541 Short-term financial instruments 10,514,093 — 10,514,093 — 10,514,093 Debt securities 10,717 — — 10,717 10,717 Other securities 430,998 37,343 1,022 392,633 430,998 Other receivables 2,000 — — 2,000 2,000 Derivative hedging instruments(*2) 7,555 — 7,555 — 7,555 Fair value through other comprehensive income Equity securities 1,466,061 1,250,497 — 215,564 1,466,061 Financial assets measured at amortized cost(*1) Cash and cash Equivalents 4,775,166 — — — — Trade accounts and notes receivable 9,051,708 — — — — Other receivables 2,761,566 — — — — Debt securities 151,146 — — — — Deposit instruments 2,745,280 — — — — ￦ 32,157,831 1,287,840 10,764,211 620,914 12,672,965 Financial liabilities Fair value through profit or loss Derivative liabilities ￦ 93,236 — 93,236 — 93,236 Borrowings 1,435,193 1,435,193 — — 1,435,193 Derivative hedging instruments(*2) 16,803 — 16,803 — 16,803 Financial liabilities measured at amortized cost(*1) Trade accounts and notes payable 5,468,869 — — — — Borrowings 20,306,023 — 20,393,246 — 20,393,246 Financial guarantee liabilities 25,598 — — — — Others 2,693,163 — — — — ￦ 30,038,885 1,435,193 20,503,285 — 21,938,478 (*1) Fair value of financial assets and liabilities measured at amortized cost except borrowings approximates their carrying amounts. (*2) The Company applies hedge accounting which uses forward contracts as hedging instrument in order to hedge the risk of changes in fair value of product prices regarding firm commitments or purchase commitments. Also, the Company applies cash flow hedge accounting which uses currency swap as hedging instrument in order to hedge the risk of interest rate and foreign exchange rate changes in foreign currency which influences cash flow from borrowings. ② (in millions of Won) Fair value Book value Level 1 Level 2 Level 3 Total Financial assets Fair value through profit or loss Derivative assets ￦ 350,149 — 350,149 — 350,149 Short-term financial instruments 8,006,081 — 8,006,081 — 8,006,081 Debt securities 75,876 — 69,926 5,950 75,876 Other securities 632,469 29,687 1,022 601,760 632,469 Other receivables 2,000 — — 2,000 2,000 Derivative hedging instruments(*2) 9,846 — 9,846 — 9,846 Fair value through other comprehensive income Equity securities 1,462,088 1,210,124 — 251,964 1,462,088 Financial assets measured at amortized cost(*1) Cash and cash Equivalents 8,053,108 — — — — Trade accounts and notes receivable 8,414,667 — — — — Other receivables 2,458,227 — — — — Debt securities 124,147 — — — — Deposit instruments 2,581,802 — — — — ￦ 32,170,460 1,239,811 8,437,024 861,674 10,538,509 Financial liabilities Fair value through profit or loss Derivative liabilities ￦ 157,036 — 157,036 — 157,036 Borrowings 1,358,294 1,358,294 — — 1,358,294 Derivative hedging instruments(*2) 18,105 — 18,105 — 18,105 Financial liabilities measured at amortized cost(*1) Trade accounts and notes payable 5,520,821 — — — — Borrowings 22,947,368 — 22,331,771 — 22,331,771 Financial guarantee liabilities 18,438 — — — — Others 2,789,195 — — — — ￦ 32,809,257 1,358,294 22,506,912 — 23,865,206 (*1) Fair value of financial assets and liabilities measured at amortized cost except borrowings approximates their carrying amounts. (*2) The Company applies hedge accounting which uses forward contracts as hedging instrument in order to hedge the risk of changes in fair value of product prices regarding firm commitments or
Value Measurement Method and Significant but not Observable Inputs for the Financial Assets Classified as Fair Value Hierarchy Level 3	① Value measurement method and significant but not observable inputs for the financial assets classified as fair value hierarchy Level 3 as of December 31, 2022 are as follows: (in millions of Won) Fair value Valuation technique Inputs Range of inputs Effect on fair value Financial assets at fair value ￦ 78,759 Discounted cash flows Growth rate 0% ~ 1% As growth rate increases, fair value increases Discount rate 4.97% ~ 14.89% As discount rate increases, fair value decreases 49,687 Proxy firm valuation method Price multiples 1.0096 As price multiples increases, fair value increases 733,228 Asset value approach — — —
Sensitivity Analysis of Financial Assets and Financial Liabilities Classified as Level 3 of Fair Value Hierarchy	② Sensitivity analysis of financial assets and financial liabilities classified as Level 3 of fair value hierarchy If other inputs remain constant as of December 31, 2022 and one of the significant but not observable input is changed, the effect on fair value measurement is as follows: (in millions of Won) Input variable Favorable Unfavorable Financial assets at fair value Fluctuation 0.5% of growth rate ￦ 237 (214 ) Fluctuation 0.5% of discount rate 20,437 (18,667 )
Fair Values of Financial Assets and Financial Liabilities	③ Changes in fair value of financial assets and financial liabilities classified as Level 3 for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Beginning ￦ 731,735 620,914 Acquisition 138,473 182,217 Gain or l 5,292 24,613 Other comprehensive income 1,581 126,510 Disposal and others (256,167 ) (92,580 ) Ending ￦ 620,914 861,674
Finance Income and Costs by Category of Financial Instruments	4) Finance income and costs by category of financial instrument for the years ended December 31, 2020, 2021 and 2022 were as follows: ① For the year ended December 31, 2020 Finance income and costs Other comprehensive (in millions of Won) Interest Gain and Gain and Gain and Others Total Financial assets at fair value through profit or loss ￦ 165,160 (15,883 ) — 9,979 329 159,585 — Derivative assets — 56,273 — 318,820 — 375,093 — Financial assets at fair value through other comprehensive income — — — — 38,019 38,019 (77,627 ) Financial assets measured at amortized cost 207,014 — (222,215 ) (15,779 ) (5,821 ) (36,801 ) — Derivative liabilities — (170,155 ) — (376,823 ) — (546,978 ) (331 ) Financial liabilities measured at amortized cost (638,797 ) — 450,984 — (16,010 ) (203,823 ) — ￦ (266,623 ) (129,765 ) 228,769 (63,803 ) 16,517 (214,905 ) (77,958 ) ② For the year ended December 31, 2021 Finance income and costs Other comprehensive (in millions of Won) Interest Gain and Gain and Gain and Others Total Financial assets at fair value through profit or loss ￦ 158,121 (12,093 ) — 12,119 26,170 184,317 — Derivative assets — 213,724 — 370,547 — 584,271 — Financial assets at fair value through other comprehensive income — — — — 48,281 48,281 214,888 Financial assets measured at amortized cost 134,122 — 651,435 (17,769 ) (7,149 ) 760,639 — Financial liabilities at fair value — 54,057 33,069 — (15,876 ) 71,250 — Derivative liabilities — 55,858 — (465,174 ) — (409,316 ) 309 Financial liabilities measured at amortized cost (439,826 ) — (846,202 ) (16 ) 11,537 (1,274,507 ) — ￦ (147,583 ) 311,546 (161,698 ) (100,293 ) 62,963 (35,065 ) 215,197 ③ For the year ended December 31, 2022 (in millions of Won) Finance income and costs Other comprehensive Interest Gain and Gain and Gain and Others Total Financial assets at fair value through profit or loss ￦ 20,421 (599,777 ) — 237,771 545 (341,040 ) — Derivative assets — 232,246 — 797,211 — 1,029,457 — Financial assets at fair value through other comprehensive income — — — — 38,837 38,837 (10,076 ) Financial assets measured at amortized cost 226,584 — 414,944 (64,244 ) (42,433 ) 534,851 — Financial liabilities at fair value — 85,790 (8,891 ) — — 76,899 — Derivative liabilities — (162,649 ) — (647,418 ) — (810,067 ) 1,023 Financial liabilities measured at amortized cost (607,458 ) — (893,377 ) — 1,443 (1,499,392 ) — ￦ (360,453 ) (444,390 ) (487,324 ) 323,320 (1,608 ) (970,455 ) (9,053 )
Maximum Exposure to Credit Risk	The carrying amount of financial assets represents the Company’s maximum exposure to credit risk. The maximum exposure to credit risk as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Cash and cash equivalents ￦ 4,775,166 8,053,108 Derivative assets 249,096 359,995 Short-term financial instrument 10,514,093 8,006,082 Debt securities 161,863 200,023 Other securities 430,998 632,469 Other receivables 2,763,566 2,460,227 Trade accounts and notes receivable 9,051,708 9,754,813 Deposit instruments 2,745,280 2,581,802 ￦ 30,691,770 32,048,519
Allowance for Doubtful Accounts	① Allowance for doubtful accounts as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Trade accounts and notes receivable ￦ 365,120 378,100 Other accounts receivable 171,273 178,264 Loans 172,162 165,051 Other assets 8,810 9,098 ￦ 717,365 730,513
Impairment Losses on Financial Assets	② Impairment losses on financial assets for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Bad debt expenses ￦ 40,153 24,791 Other bad debt expenses(*1) 19,704 14,968 Less: Recovery of allowance for other bad debt accounts (32,679 ) (5,144 ) ￦ 27,178 34,615 (*1) Other bad debt expenses are mainly related to loans and other accounts receivable.
Aging and Impairment Losses of Trade Accounts and Notes Receivable and Other Receivables	③ The aging and allowance for doubtful accounts of trade accounts and notes receivable as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Trade accounts and Impairment Trade accounts and Impairment C ￦ 9,481,730 28,866 7,888,518 20,752 Over due less than 1 month 289,716 6,537 864,391 63,311 1 month - 3 months 132,509 2,821 388,151 10,337 3 months - 12 months 85,339 22,212 517,171 12,645 Over 12 months 417,970 304,684 446,045 271,055 ￦ 10,407,264 365,120 10,104,276 378,100 ④ The aging and allowance for doubtful accounts of other receivables as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Loans and other Impairment Loans and other Impairment C ￦ 2,239,492 99,661 2,049,908 53,070 Over due less than 1 month 33,276 373 141,718 2,987 1 month - 3 months 86,517 71 108,152 16,408 3 months - 12 months 289,810 12,227 24,912 930 Over 12 months 466,716 239,913 487,950 279,018 ￦ 3,115,811 352,245 2,812,640 352,413
Changes in Allowance for Doubtful Accounts	2021 2022 (in millions of Won) Trade accounts and Impairment Trade accounts and Impairment C ￦ 9,481,730 28,866 7,888,518 20,752 Over due less than 1 month 289,716 6,537 864,391 63,311 1 month - 3 months 132,509 2,821 388,151 10,337 3 months - 12 months 85,339 22,212 517,171 12,645 Over 12 months 417,970 304,684 446,045 271,055 ￦ 10,407,264 365,120 10,104,276 378,100 ④ The aging and allowance for doubtful accounts of other receivables as of December 31, 2021 and 2022 are as follows: 2021 2022 (in millions of Won) Loans and other Impairment Loans and other Impairment C ￦ 2,239,492 99,661 2,049,908 53,070 Over due less than 1 month 33,276 373 141,718 2,987 1 month - 3 months 86,517 71 108,152 16,408 3 months - 12 months 289,810 12,227 24,912 930 Over 12 months 466,716 239,913 487,950 279,018 ￦ 3,115,811 352,245 2,812,640 352,413 ⑤ Changes in the allowance for doubtful accounts for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Beginning ￦ 898,273 753,693 717,365 Bad debt expenses(reversal) 829 40,153 24,791 Other bad debt expenses 53,105 (12,975 ) 9,824 Others(*1) (198,514 ) (63,506 ) (21,467 ) Ending ￦ 753,693 717,365 730,513 (*1) Others for the years ended December 31, 2020, 2021 and 2022, included decreases mainly due to write-off amounting to ￦ ￦ ￦
Contractual Maturities for Non-derivative Financial Liabilities	1) Contractual maturities of non-derivative financial liabilities are as follows: (in millions of Won) Book value Contractual Within 1 year After Trade accounts and notes payable ￦ 5,520,822 5,520,822 5,520,807 15 — Borrowings 24,305,662 25,525,529 11,924,070 12,711,700 889,759 Financial guarantee liabilities(*1) 18,437 3,982,288 3,982,288 — — Lease liabilities 823,482 853,253 146,558 393,948 312,747 Other financial liabilities 2,671,022 2,671,287 2,554,837 116,450 — ￦ 33,339,425 38,553,179 24,128,560 13,222,113 1,202,506 (*1) For issued financial guarantee contracts, the maximum amount of the guarantee is allocated to the earliest period in which the guarantee could be called.
Contractual Maturities Analysis of Derivative Financial Liabilities	2) Contractual maturities of derivative financial liabilities are as follows: (in millions of Won) Within 1 year - 5 years After Total Currency forward ￦ 72,048 8,349 — 80,397 Currency swap 3,750 170 — 3,920 Others 19,359 71,465 — 90,824 ￦ 95,157 79,984 — 175,141
Currency risk [member]
Statement [LineItems]
Market Risk Exposure	1) The Company has exposure to the risk that the fair value or future cash flows of a financial instrument will fluctuate because of the changes in foreign exchange rates. The exposure to currency risk as of December 31, 2021 and 2022 is as follows: (in millions of Won) 2021 2022 Assets Liabilities Assets Liabilities USD ￦ 5,237,890 7,879,302 5,553,742 8,996,494 EUR 622,749 2,620,254 574,739 2,438,031 JPY 156,007 545,622 525,815 384,535 Others 849,744 467,053 1,614,928 807,876
Sensitivity Analysis for Market Risk	2) As of December 31, 2021 and 2022, provided that functional currency against foreign currencies other than functional currency hypothetically strengthens or weakens by 10%, the changes in gain or loss for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 10% increase 10% decrease 10% increase 10% decrease USD ￦ (264,141 ) 264,141 (344,275 ) 344,275 EUR (199,751 ) 199,751 (186,329 ) 186,329 JPY (38,962 ) 38,962 14,128 (14,128 )
Interest rate risk [member]
Statement [LineItems]
Market Risk Exposure	1) The carrying amount of interest-bearing financial instruments as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Fixed rate Financial assets ￦ 20,677,076 21,394,764 Financial liabilities (16,092,096 ) (16,932,079 ) ￦ 4,584,980 4,462,685 Variable rate Financial liabilities ￦ (6,427,133 ) (8,197,066 )
Sensitivity Analysis for Market Risk	2) Sensitivity analysis on the cash flows of financial instruments with variable interest rate The Company’s interest rate risk mainly arises from borrowings with variable interest rate. As of December 31, 2021 and 2022, provided that other factors remain the same and the interest rate of borrowings with floating rates increases or decreases by 1%, the changes in interest expense for the years ended December 31, 2021 and 2022 would have been (in millions of Won) 2021 2022 1% increase 1% decrease 1% increase 1% decrease Variable rate financial instruments ￦ (64,271) 64,271 (81,971 ) 81,971

Share Capital and Capital Sur_2

Share Capital and Capital Surplus (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Share Capital	(a) Share capital as of December 31, 2021 and 2022 are as follows: (Share, in Won) 2021 2022 Authorized shares 200,000,000 200,000,000 Par value ￦ 5,000 5,000 Issued shares(*1) 87,186,835 84,571,230 Shared capital(*2) ￦ 482,403,125,000 482,403,125,000 (*1) As of December 31, 2022, total number of ADRs of 24,779,936 outstanding in overseas stock market are equivalent to 6,194,984 shares of common stock. (*2) As of December 31, 2022, the difference between the ending balance of common stock and the aggregate par value of issued common stock is ￦
Changes in Issued Common Stock	(share) 2021 2022 Issued Treasury Number of Issued Treasury Number of Beginning 87,186,835 (11,171,363 ) 76,015,472 87,186,835 (11,561,263 ) 75,625,572 Acquisition of treasury shares — (389,900 ) (389,900 ) — — — Disposal of treasury shares — — — — 223,605 223,605 Retirement of treasury shares — — — (2,615,605 ) 2,615,605 — Ending 87,186,835 (11,561,263 ) 75,625,572 84,571,230 (8,722,053 ) 75,849,177
Summary of Capital Surplus	(c) Capital surplus as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Share premium ￦ 463,825 463,825 Gain on disposal of treasury shares 796,623 806,114 Other capital surplus 136,968 140,349 ￦ 1,397,416 1,410,288

Hybrid Bonds (Tables)

Hybrid Bonds (Tables)	12 Months Ended
	Dec. 31, 2022
POSCO ENERGY CO., LTD. [member]
Statement [LineItems]
Summary of Hybrid Bonds	(a) The Company issued hybrid bonds, which are classified as equity in the consolidated financial statements. During the year ended December 31, 2022, the hybrid bonds were transferred to a new subsidiary (POSCO) which was established through a vertical spin-off. Accordingly, the ownership interests of the controlling company as of December 31, 2021 have been reclassified as non-controlling interests as of December 31, 2022. Hybrid bonds classified as equity as of December 31, 2021 and December 31, 2022 are as follows: (in millions of Won) Date of issue Date of Interest 2021 2022 Hybrid bond 1-2(*1) 2013-06-13 2043-06-13 4.60 ￦ 200,000 200,000 Issuance cost (616 ) (616 ) ￦ 199,384 199,384 (*1) Details of issuance of hybrid bonds as of December 31, 2022 are as follows: Hybrid bond 1-2 Maturity date 30 years (The issuer has a right to extend the maturity date) Interest rate Issue date ~ 2023-06-12 : 4.60% Reset every 10 years as follows; · After 10 years : return on government bond of the Republic of Korea (10 years) + 1.40% · After 10 years : additionally +0.25% according to Step-up clauses · After 30 years : additionally +0.75% Interest payments condition Quarterly (Optional deferral of interest payment is available to the Company) Others The Company can call the hybrid bond at year 10th anniversary of issuance and interest payment date afterwards The hybrid bond holder’s preference in the event of liquidation is senior to the common stockholders, but subordinate to other creditors. The interest accumulated but not paid on the hybrid bonds as of December 31, 2022 amounts to ￦ (b) POSCO ENERGY CO., LTD., a subsidiary of the Company, issued hybrid bonds, which are classified as non-controlling interests in the consolidated financial statements. Hybrid bonds as of December 31, 2021 and 2022 are as follows: (in millions of Won) Date of issue Date of maturity Interest rate (%) 2021 2022 Hybrid bond 1-4(*1) 2013-08-29 2043-08-29 5.21 ￦ 140,000 140,000 Issuance cost (429 ) (429 ) ￦ 139,571 139,571

Reserves (Tables)

Reserves (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [LineItems]
Summary of Reserves	(a) Reserves as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Accumulated comprehensive loss of investments in associates and joint ventures ￦ (532,833 ) (406,555 ) Changes in fair value of equity investments at fair value through other comprehensive income (153,359 ) (103,843 ) Foreign currency translation differences 7,762 60,487 Gain or losses on valuation of derivatives (455 ) (3 ) Others 11,900 5,924 ￦ (666,985 ) (443,990 )
Unrealized fair value of available-for-sale investments [member]
Statement [LineItems]
Summary of Reserves	(b) Changes in fair value of equity investments at fair value through other comprehensive income for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Beginning balance ￦ (359,283 ) (153,359 ) Changes in unrealized fair value of equity investments 201,144 37,068 Reclassification upon disposal 1,667 20,729 Others 3,113 (8,281 ) Ending balance ￦ (153,359 ) (103,843 )

Treasury Shares (Tables)

Treasury Shares (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Changes in Treasury Shares	Based on the Board of Directors’ resolution, POSCO HOLDINGS INC. holds treasury shares for business purposes including its share price stabilization. The changes in treasury shares for the years ended December 31, 2021 and 2022 were as follows: (shares, in millions of Won) 2021 2022 Number of shares Amount Number of shares Amount Beginning 11,171,363 ￦ 2,391,523 11,561,263 ￦ 2,508,294 Acquisition of treasury shares 389,900 116,771 — — Disposal of treasury shares — — (223,605 ) (48,513 ) Retirement of treasury shares — — (2,615,605 ) (567,473 ) Ending 11,561,263 ￦ 2,508,294 8,722,053 ￦ 1,892,308

Share-Based Payments (Tables)

Share-Based Payments (Tables)	12 Months Ended
	Dec. 31, 2022
Share Based Payments [Abstract]
Summary Of Company Stock Grant Program	As of December 31, 2022, detailed information of the Company’s Stock Grant program is as follows: (in Won, except share information) Grant Affiliated company of the Total quantity of treasury Fair value of common shares per Granted in 2022 2022-12-31 POSCO HOLDINGS INC. 15,888 ￦ 276,500 Subsidiaries 27,926

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Revenue Disaggregated by Types of Revenue and Timing of Revenue Recognition	1) Details of revenue disaggregated by types of revenue and timing of revenue recognition for the years ended December 31, 2020, 2021 and 2022 were as follows: ① For the year ended December 31, 2020 (in millions of Won) Green Infrastructure Steel Construction Trading Energy Green Others Total Types of revenue Revenue from sales of goods ￦ 28,394,790 — 18,796,522 2,490 742,128 172,689 48,108,619 Revenue from services 462,489 45,359 388,222 1,801,862 1,498 8,020 2,707,450 Revenue from construction contract — 6,197,497 — — 27,949 — 6,225,446 Others 35,599 7,196 160,478 76,384 — 145,506 425,163 ￦ 28,892,878 6,250,052 19,345,222 1,880,736 771,575 326,215 57,466,678 Timing of revenue recognition Revenue recognized at a point in time ￦ 28,430,389 141,916 18,957,000 78,874 742,128 318,195 48,668,502 Revenue recognized over time 462,489 6,108,136 388,222 1,801,862 29,447 8,020 8,798,176 ￦ 28,892,878 6,250,052 19,345,222 1,880,736 771,575 326,215 57,466,678 ② For the year ended December 31, 2021 (in millions of Won) Green Infrastructure Steel Construction Trading Energy Green Others Total Types of revenue Revenue from sales of goods ￦ 40,305,393 — 24,233,531 7,751 1,210,874 219,425 65,976,974 Revenue from services 680,513 58,807 547,369 2,027,133 3,150 102,881 3,419,853 Revenue from construction contract — 6,014,050 — — 27,933 34 6,042,017 Others 107,499 2,365 284,708 26,393 — 149,392 570,357 ￦ 41,093,405 6,075,222 25,065,608 2,061,277 1,241,957 471,732 76,009,201 Timing of revenue recognition Revenue recognized at a point in time ￦ 40,412,892 491,313 24,518,239 34,144 1,210,874 368,817 67,036,279 Revenue recognized over time 680,513 5,583,909 547,369 2,027,133 31,083 102,915 8,972,922 ￦ 41,093,405 6,075,222 25,065,608 2,061,277 1,241,957 471,732 76,009,201 ③ For the year ended December 31, 2022 (in millions of Won) Green Infrastructure Steel Construction Trading Energy Green Others Total Types of revenue Revenue from sales of goods ￦ 43,508,308 — 24,824,117 84,168 2,418,796 — 70,835,389 Revenue from services 919,391 142,708 586,047 3,849,390 4,501 8,017 5,510,054 Revenue from construction contract — 7,769,863 — — 28,488 — 7,798,351 Others 119,267 8,537 545,294 65,401 — 121,323 859,822 ￦ 44,546,966 7,921,108 25,955,458 3,998,959 2,451,785 129,340 85,003,616 Timing of revenue recognition Revenue recognized at a point in time ￦ 43,627,575 837,363 25,369,411 149,569 2,418,796 121,323 72,524,037 Revenue recognized over time 919,391 7,083,745 586,047 3,849,390 32,989 8,017 12,479,579 ￦ 44,546,966 7,921,108 25,955,458 3,998,959 2,451,785 129,340 85,003,616
Summary of Contract Assets and Liabilities From Contracts With Customers	(b) Details of contract assets and liabilities from contracts with customers as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Receivables Account receivables ￦ 9,051,708 8,414,667 Contract assets Due from customers for contract work 990,436 1,311,508 Contract liabilities Advance received 1,583,732 1,233,424 Due to customers for contract work 813,207 756,316 Unearned revenue 133,765 84,195

Revenue - Contract Balances (Ta

Revenue - Contract Balances (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of In-Progress Contracts	(a) Details of outstanding contracts as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Accumulated cost ￦ 30,691,333 27,940,760 Accumulated contract profit 2,462,231 1,759,843 Accumulated contract loss (1,244,787 ) (885,148 ) Accumulated contract revenue 31,908,777 28,815,455
Summary of Due From Customers for Contract Work and Due to Customers for Contract Work	(b) Details of due from customers for contract work and due to customers for contract work as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Unbilled due from customers for contract work ￦ 1,027,039 1,340,146 Due to customers for contract work (813,207 ) (756,316 ) ￦ 213,832 583,830
Summary of Changes in Estimated Total Contract Costs and Impact on Profit or Loss	(c) Due to the factors causing the cost variation for the years ended December 31, 2021 and 2022, the estimated total contract costs have changed. Details of changes in estimated total contract costs and the impact on profit before income taxes for the years ended December 31, 2021, 2022 and future periods are as follows: (in millions of Won) 2021 2022 Changes in total contract revenues ￦ 862,660 1,222,558 Changes in estimated total contract costs 659,613 1,622,429 Changes in profit before income taxes of construction contract : - Current period 116,340 (165,623 ) - Future periods 86,707 (234,248 )
Summary of Significant Assumptions Including Uncertainty of Estimate of Total Contract Costs	The significant assumptions including uncertainty of the estimate of total contract costs are as follows: Method of significant assumption Material cost Assumption based on recent purchasing price and quoted market price Labor cost Assumption based on standard monthly and daily labor cost Outsourcing cost Assumption based on the past experience rate of similar project and market price
Summary of Expected Revenue In Relation To Performance Obligations	(e) As of December 31, 2022, revenue expected to be recognized in the future in relation to performance obligations that have not been fulfilled (or partially fulfilled) is as follows: (in millions of Won) 2023 2024 2025 After 2026 Total Expected Revenue ￦ 7,529,798 5,999,477 2,350,137 988,206 16,867,618

Selling and Administrative Ex_2

Selling and Administrative Expenses (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Other Administrative Expenses	Other administrative expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Wages and salaries ￦ 828,667 941,824 1,075,873 Expenses related to post-employment benefits 83,037 142,606 84,582 Other employee benefits 187,075 207,074 230,909 Travel 17,513 18,916 39,661 Depreciation 146,483 144,037 148,639 Amortization 115,254 87,232 90,069 Communication 10,390 9,898 10,890 Electricity 7,968 7,398 9,563 Taxes and public dues 59,274 85,808 95,976 Rental 34,966 28,682 36,732 Repairs 8,952 12,604 17,343 Entertainment 8,328 10,186 13,741 Advertising 71,743 89,218 103,551 Research & development 116,273 123,092 179,714 Service fees 156,530 187,271 225,072 Vehicles maintenance 4,880 5,336 7,102 Industry association fee 9,586 9,691 11,624 Conference 11,576 14,479 20,259 Increase (decrease) to provisions 12,285 8,936 (909 ) Others 48,822 75,521 79,575 ￦ 1,939,602 2,209,809 2,479,966
Summary of Selling Expenses	Selling expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Freight and custody ￦ 180,503 192,973 77,427 Operating expenses for distribution center 6,977 7,382 2,507 Sales commissions 86,851 65,404 75,012 Sales advertising 1,284 3,620 5,782 Sales promotion 7,086 6,264 19,388 Sample 1,650 2,164 2,052 Sales insurance premium 30,364 41,069 39,018 Contract cost 46,247 61,450 57,661 Others 15,978 12,749 15,635 ￦ 376,940 393,075 294,482

Research and Development Expe_2

Research and Development Expenditures Recognized as Expenses (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Research and Development Expenditures Recognized as Expenses	Research and development expenditures recognized as expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Administrative expenses ￦ 116,273 123,092 179,714 Cost of sales 351,861 345,457 356,560 ￦ 468,134 468,549 536,274

Finance Income and Costs (Table

Finance Income and Costs (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Details of Finance Income and Costs	Details of finance income and costs for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Finance income Interest income(*1) ￦ 372,174 292,243 247,005 Dividend income 38,348 74,451 39,383 Gain on foreign currency transactions 1,147,692 1,079,939 2,284,126 Gain on foreign currency translations 574,463 298,452 703,627 Gain on derivatives transactions 352,005 402,171 840,265 Gain on valuations of derivatives 115,642 370,780 262,723 Gain on disposals of financial assets at fair value through profit of loss 15,550 20,070 256,016 Gain on valuations of financial assets at fair value through profit or loss 51,581 101,717 98,359 Gain on valuations of financial liabilities at fair value through profit or loss — 54,057 85,790 Others 10,044 36,230 16,717 ￦ 2,677,499 2,730,110 4,834,011 Finance costs Interest expenses ￦ (638,797 ) (439,826 ) (607,458 ) Loss on foreign currency transactions (1,067,907 ) (985,179 ) (2,505,862 ) Loss on foreign currency translations (425,479 ) (554,910 ) (969,215 ) Loss on derivatives transactions (410,008 ) (496,798 ) (690,471 ) Loss on valuations of derivatives (229,524 ) (101,198 ) (193,127 ) Loss on disposals of trade accounts and notes receivable (15,816 ) (17,769 ) (64,244 ) Loss on disposals of financial assets at fair value through profit or loss (5,571 ) (7,951 ) (18,245 ) Loss on valuations of financial assets at fair value through profit or loss (67,464 ) (113,810 ) (698,136 ) Others (31,836 ) (47,734 ) (57,708 ) ￦ (2,892,402 ) (2,765,175 ) (5,804,466 ) (*1) Interest income calculated using the effective interest method for the years ended December 31, 2020, 2021 and 2022 were ￦ ￦ million and ￦

Other Operating Income and Ex_2

Other Operating Income and Expenses (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Details of Other Operating Income and Expenses	Details of other operating income and expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Other operating income Gain on disposals of assets held for sale ￦ 841 60,208 55,262 Gain on disposals of investment in subsidiaries, associates and joint ventures 88,836 85,981 13,904 Gain on disposals of property, plant and equipment 15,548 12,016 18,502 Gain on disposals of intangible assets 815 273 291 Gain on valuation of firm commitment 107,511 169,485 181,645 Gain on disposals of emission rights 24,851 567 5,181 Reversal of other provisions 5,154 33,887 5,245 Compensation for insured losses(*1) 25,253 38,115 237,565 Miscellaneous Income (*2) 111,701 157,703 64,235 Others 21,826 19,762 10,187 ￦ 402,336 577,997 592,017 Other operating expenses Impairment loss on assets held for sale ￦ (5,030 ) — — Loss on disposals of investments in subsidiaries, associates and joint ventures (14,632 ) (12,882 ) (12,400 ) Loss on disposals of property, plant and equipment (142,126 ) (95,720 ) (111,082 ) Impairment loss on property, plant and equipment (27,040 ) (311,520 ) (213,183 ) Impairment loss on intangible assets (197,776 ) (224,328 ) (370,663 ) Loss on valuation of firm commitment (93,098 ) (111,542 ) (156,183 ) Idle tangible asset expenses (19,276 ) (23,843 ) (18,184 ) Increase to provisions (30,536 ) (37,962 ) (88,857 ) Donations (45,652 ) (101,258 ) (80,558 ) Miscellaneous losses (63,525 ) (69,972 ) (63,812 ) Others (6,883 ) (38,465 ) (8,763 ) ￦ (645,574 ) (1,027,492 ) (1,123,685 ) (*1) During the year ended December 31, 2022, POSCO, a subsidiary, received insurance payments of ￦ (*2) During the year ended December 31, 2021, the Company recognized ￦

Expenses by Nature (Tables)

Expenses by Nature (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Expenses by Nature	Expenses that are recorded by nature as cost of sales, selling and administrative expenses, impairment loss on other receivables and other operating expenses in the statements of comprehensive income for the years ended December 31, 2020, 2021 and 2022 were as follows (excluding finance costs and income tax expense): (in millions of Won) 2020 2021 2022 Raw material used, changes in inventories and others ￦ 34,555,624 44,466,766 54,670,367 Employee benefits(*2) 3,624,953 4,023,167 4,330,946 Outsourced processing cost 7,808,343 7,690,334 8,641,448 Electricity 656,121 744,207 936,360 Depreciation(*1) 3,156,181 3,135,345 3,204,744 Amortization 465,558 444,100 488,835 Freight and custody 1,428,012 1,580,200 3,077,044 Sales commissions 86,851 65,404 75,012 Loss on disposal of property, plant and equipment 142,126 95,720 111,082 Impairment loss on property, plant and equipment 27,040 311,520 213,183 Impairment loss on goodwill and intangible assets 197,776 224,328 370,663 Donations 45,652 101,258 80,558 Other 3,638,393 4,962,224 5,058,849 ￦ 55,832,630 67,844,573 81,259,091 (*1) Includes depreciation of investment property. (*2) The details of employee benefits expenses for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Wages and salaries ￦ 3,316,364 3,684,894 4,024,805 Expenses related to post-employment benefits 308,589 338,273 306,141 ￦ 3,624,953 4,023,167 4,330,946

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Summary of Income Tax Expense	(a) Income tax expense for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Current income taxes(*1) ￦ 692,870 2,470,416 932,085 Deferred income tax due to temporary differences (481,303 ) (153,919 ) (407,958 ) Items recorded directly in equity 12,705 (102,670 ) (62,593 ) Income tax expense ￦ 224,272 2,213,827 461,534 (*1) Refund (additional payment) of income taxes when filing a final corporation tax return is credited (charged) directly to current income taxes.
Income Tax Credit (Charged) Directly to Equity	(b) The income taxes credited (charged) directly to equity for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Net changes in fair value of equity investments at fair value through other comprehensive income ￦ 26,850 (83,532 ) (37,431 ) Others (14,145 ) (19,138 ) (25,162 ) ￦ 12,705 (102,670 ) (62,593 )
Reconciliation of Calculated Income Tax Expense Based on the Statutory Rate to Actual Amount of Taxes Recorded	(c) The following table reconciles the calculated income tax expense based on POSCO HOLDINGS INC’s statutory rate (27.5%) to the actual amount of taxes recorded by the Company for the years ended December 31, 2020, 2021 and 2022. (in millions of Won) 2020 2021 2022 Profit before income tax expense ￦ 1,972,764 9,389,809 4,047,491 Income tax expense computed at statutory rate 533,875 2,572,702 1,101,240 Adjustments: Tax credits (90,093 ) (313,205 ) (133,727 ) Additional income tax expense for prior years (Refund of tax for prior years) (14,362 ) (42,667 ) 22,929 Investment in subsidiaries, associates and joint ventures(*2) 147,874 (111,938 ) (413,349 ) Tax effects due to permanent differences 2,591 17,811 19,350 Effect of tax rate change — — (180,533 ) Others(*1) (355,613 ) 91,124 45,624 (309,603 ) (358,875 ) (639,706 ) Income tax expense ￦ 224,272 2,213,827 461,534 Effective tax rate (%) 11.37 % 23.58 % 11.40 % (*1) Due to changes in estimation on deductibility of temporary difference related to Synthetic Natural Gas (SNG) facility and Business Combination of Off-gas Power Station Business Sector, ￦ . (*2) During the year ended December 31, 2022, POSCO HOLDINGS INC. sold certain of its subsidiaries and associates to POSCO, a subsidiary of POSCO HOLDINGS INC., and classified CSP-Compania Siderurgica do Pecem, an investment in joint venture as assets held for sale. This amount includes recognition of deferred tax assets of million in connection with these transactions .
Movements in Deferred Tax Assets (Liabilities)	(d) The movements in deferred tax assets (liabilities) for the years ended December 31, 2021 and 2022 were as follows: (in millions of Won) 2021 2022 Beginning Inc. (Dec.) Ending Beginning Inc. (Dec.) Ending Deferred income tax due to temporary differences Allowance for doubtful accounts ￦ 147,224 (3,866 ) 143,358 143,358 (12,857 ) 130,501 PP&E - Depreciation 32,236 (1,328 ) 30,908 30,908 (6,981 ) 23,927 Share of profit or loss of equity-accounted investees 219,431 5,135 224,566 224,566 45,072 269,638 Allowance for inventories valuation 11,542 11,441 22,983 22,983 24,582 47,565 PP&E - Revaluation (1,733,999 ) 130,616 (1,603,383 ) (1,603,383 ) 1,455,648 (147,735 ) Prepaid expenses 19,831 (301 ) 19,530 19,530 (2,607 ) 16,923 PP&E - Impairment loss 383,503 70,166 453,669 453,669 (436,570 ) 17,099 Gain or loss on foreign currency translation (51,645 ) 50,540 (1,105 ) (1,105 ) (12,601 ) (13,706 ) Defined benefit liabilities (121,820 ) (26,521 ) (148,341 ) (148,341 ) 107,924 (40,417 ) Provision for construction losses 17,605 (7,415 ) 10,190 10,190 7,759 17,949 Provision for construction warranty 63,515 10,845 74,360 74,360 (4,089 ) 70,271 Accrued income (41,176 ) (9,276 ) (50,452 ) (50,452 ) 10,690 (39,762 ) Provision for accelerated depreciation (2,915 ) (5,595 ) (8,510 ) (8,510 ) (2,728,164 ) (2,736,674 ) Spin-off — — — — 2,111,815 2,111,815 Impairment loss on AFS 108,598 9,551 118,149 118,149 (23,607 ) 94,542 Difference in acquisition costs of treasury shares 69,408 — 69,408 69,408 (25,516 ) 43,892 Others 392,640 (83,022 ) 309,618 309,618 99,186 408,804 (486,022 ) 150,970 (335,052 ) (335,052 ) 609,684 274,632 Deferred income taxes recognized directly to equity Net changes in fair value of equity investments at fair value through other comprehensive income 156,991 (83,532 ) 73,459 73,459 (37,431 ) 36,028 Others 153,876 (19,139 ) 134,737 134,737 (141,788 ) (7,051 ) 310,867 (102,671 ) 208,196 208,196 (179,219 ) 28,977 Deferred tax from tax credit Tax credit carry-forward and others 72,406 458 72,864 72,864 (1,500 ) 71,364 Investments in subsidiaries, associates and joint ventures Investments in subsidiaries, associates and joint ventures 139,867 105,162 245,029 245,029 (21,008 ) 224,021 ￦ 37,118 153,919 191,037 191,037 407,957 598,994
Summary of Deferred Tax Assets And Liabilities	(e) Deferred tax assets and liabilities as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Assets Liabilities Net Assets Liabilities Net Deferred income tax due to temporary differences Allowance for doubtful accounts ￦ 143,526 (168 ) 143,358 130,700 (199 ) 130,501 PP&E - Depreciation 97,713 (66,805 ) 30,908 94,003 (70,076 ) 23,927 Share of profit or loss of equity-accounted investees 294,505 (69,939 ) 224,566 284,568 (14,930 ) 269,638 Allowance for inventories valuation 22,983 — 22,983 47,565 — 47,565 PP&E - Revaluation — (1,603,383 ) (1,603,383 ) — (147,735 ) (147,735 ) Prepaid expenses 19,604 (74 ) 19,530 17,003 (80 ) 16,923 PP&E - Impairment loss 453,669 — 453,669 17,099 — 17,099 Gain or loss on foreign currency translation 87,947 (89,052 ) (1,105 ) 75,235 (88,941 ) (13,706 ) Defined benefit liabilities 459,074 (607,415 ) (148,341 ) 550,140 (590,557 ) (40,417 ) Provision for construction losses 10,190 — 10,190 17,949 — 17,949 Provision for construction warranty 74,360 — 74,360 70,271 — 70,271 Accrued income — (50,452 ) (50,452 ) — (39,762 ) (39,762 ) Provision for accelerated depreciation — (8,510 ) (8,510 ) — (2,736,674 ) (2,736,674 ) Spin-off — — — 2,112,733 (918 ) 2,111,815 Impairment loss on AFS 118,149 — 118,149 94,542 — 94,542 Difference in acquisition costs of treasury shares 69,408 — 69,408 43,892 — 43,892 Others 540,588 (230,970 ) 309,618 468,549 (59,745 ) 408,804 2,391,716 (2,726,768 ) (335,052 ) 4,024,249 (3,749,617 ) 274,632 Deferred income taxes recognized directly to equity Net changes in fair value of equity investments at fair value through other comprehensive income 143,956 (70,497 ) 73,459 105,125 (69,097 ) 36,028 Others 159,793 (25,056 ) 134,737 30,370 (37,421 ) (7,051 ) 303,749 (95,553 ) 208,196 135,495 (106,518 ) 28,977 Deferred tax from tax credit Tax credit carry-forward and others 72,864 — 72,864 71,364 — 71,364 Investments in subsidiaries, associates and joint ventures Investments in subsidiaries, associates and joint ventures 513,884 (268,855 ) 245,029 463,133 (239,112 ) 224,021 ￦ 3,282,213 (3,091,176 ) 191,037 4,694,241 (4,095,247 ) 598,994 (f) As of December 31, 202 2 ￦ ￦ (g) The Company recognized current tax payable or receivable at the amount expected to be paid or received that reflects uncertainty related to income taxes.

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Basic And Diluted Earnings Per Share	(a) Basic earnings per share for the years ended December 31, 2020, 2021 and 2022 were as follows: (in Won, except share 2020 2021 2022 Profit attribute to controlling interest ￦ 1,581,207,551,926 6,606,727,454,113 3,157,536,155,264 Interests of hybrid bonds, net of tax (6,688,273,972 ) (6,669,999,999 ) (1,078,164,383 ) Weighted-average number of common shares outstanding(*1) 79,120,963 75,696,150 75,814,870 Basic earnings per share ￦ 19,900 87,191 41,634 (*1) The weighted-average number of common shares used to calculate basic earnings per share are as follows: (shares) 2020 2021 2022 Total number of common shares issued 87,186,835 87,186,835 84,571,230 Weighted-average number of treasury shares (8,065,872 ) (11,490,685 ) (8,756,360 ) Weighted-average number of common shares outstanding 79,120,963 75,696,150 75,814,870
Summary of Diluted Earnings Per Share	(b) Diluted earnings per share for the years ended December 31, 2020, 2021 and 2022 were as follows: (in Won, except share 2020 2021 2022 Profit attribute to controlling interest ￦ 1,581,207,551,926 6,606,727,454,113 3,157,536,155,264 Interests of hybrid bonds, net of tax (6,688,273,972 ) (6,669,999,999 ) (1,078,164,383 ) Gain or loss from exchange rate on and revaluation of exchangeable bonds — (63,166,690,813 ) (55,751,463,819 ) Adjusted weighted-average number of common shares(*1) 79,120,963 76,688,340 78,906,375 Diluted earnings per share ￦ 19,900 85,240 39,296
Summary of weighted-average number of common shares used to calculate diluted earnings per share	(*1) The weighted-average number of common shares used to calculate diluted earnings per share are as follows: (shares) 2020 2021 2022 Weighted-average number of common shares outstanding 79,120,963 75,696,150 75,814,870 Weighted-average number of potential common share — 992,190 3,091,505 Adjusted weighted-average number of common shares 79,120,963 76,688,340 78,906,375

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2022
Statement [LineItems]
Significant Financial Transactions Between the Company, Excluding the Controlling Company, and Related Parties	(e) Significant financial transactions between the Company, excluding the controlling company, and related companies for the years ended December 31, 2021 and 2022 were as follows: 1) December 31, 2021 (in millions of Won) Beginning Lend Collect Others(*1) Ending Associates and joint ventures UITrans LRT Co., Ltd. ￦ 23,452 5,682 — (35 ) 29,099 South-East Asia Gas Pipeline Company Ltd. 91,003 — (49,928 ) 6,348 47,423 PT. Batutua Tembaga Raya(*2) 35,355 — — (35,355 ) — PT. Tanggamus Electric Power 4,304 — — 386 4,690 PT. Wampu Electric Power 5,186 — — 465 5,651 PT. POSMI Steel Indonesia 2,176 — — 195 2,371 Nickel Mining Company SAS 62,420 — — 191 62,611 KRAKATAU POS-CHEM DONG-SUH CHEMICAL 5,440 — — (698 ) 4,742 POS-SeaAH Steel Wire (Thailand) Co., Ltd. 6,528 — — 585 7,113 AMCI (WA) PTY LTD 83,291 6,154 — 2,220 91,665 POS-AUSTEM YANTAI AUTOMOTIVE CO.,LTD 5,440 — — 488 5,928 POS-AUSTEM WUHAN AUTOMOTIVE CO.,LTD 8,704 — — 780 9,484 Hyo-chun Co., Ltd. 2,382 — — — 2,382 POS-AUSTEM Suzhou Automotive Co., Ltd 16,320 — — 1,463 17,783 CAML RESOURCES PTY LTD 3,312 — (3,312 ) — — Shinahn wind power generation(*3) 37 60 — (97 ) — FQM Australia Holdings Pty Ltd — 27,242 — (15 ) 27,227 ￦ 355,350 39,138 (53,240 ) (23,079 ) 318,169 (*1) Includes adjustments of foreign currency translation differences and others. (*2) PT. Batutua Tembaga Raya was excluded from the association due to the sale of its shares during the years ended December 31, 2021. Meanwhile, the uncollected loan was offset and written off from the loan loss provisions set in the previous period, and these effects are included in Others. (*3) Shinahn Wind Power Generation was excluded from the association due to the sale of its shares during the years period ended December 31, 2021. 2) December 31, 2022 (in millions of Won) Beginning Lend Collect Others(*1) Ending Associates and joint ventures UITrans LRT Co., Ltd. ￦ 29,099 7,460 (5 ) (44 ) 36,510 South-East Asia Gas Pipeline Company Ltd. 47,423 — (45,639 ) (1,784 ) — PT. Tanggamus Electric Power 4,690 — — 324 5,014 PT. Wampu Electric Power 5,651 — (1,876 ) 213 3,988 PT. POSMI Steel Indonesia 2,371 — (2,371 ) — — Nickel Mining Company SAS 62,611 — — 413 63,024 KRAKATAU POS-CHEM DONG-SUH CHEMICAL 4,742 — (1,264 ) 324 3,802 POS-SeAH Steel Wire (Thailand) Co., Ltd. 7,113 — — 491 7,604 AMCI (WA) PTY LTD 91,665 6,975 — 5,641 104,281 POS-AUSTEM YANTAI AUTOMOTIVE CO.,LTD 5,928 — (6,548 ) 620 — POS-AUSTEM WUHAN AUTOMOTIVE CO.,LTD 9,484 — — 654 10,138 Hyo-chun Co., Ltd. 2,382 — — — 2,382 POS-AUSTEM Suzhou Automotive Co., Ltd 17,783 — (6,069 ) 959 12,673 FQM Australia Holdings PTY Ltd 27,227 7,935 — (122 ) 35,040 POHANG E&E Coi., LTD — 100 — — 100 POSCO(Guangdong) Automotive Steel Co., Ltd. — 35,131 — — 35,131 ￦ 318,169 57,601 (63,772 ) 7,689 319,687 (*1) Includes adjustments of foreign currency translation differences and others.
Details of Compensation to Key Management Officers	(f) For the years ended December 31, 2020, 2021 and 2022, details of compensation to key management officers were as follows: (in millions of Won) 2020 2021 2022 Short-term benefits ￦ 109,546 111,900 174,629 Long-term benefits 15,288 18,115 9,182 Retirement benefits 16,238 22,239 22,106 ￦ 141,072 152,254 205,917
Posco [member]
Statement [LineItems]
Significant Transactions With Related Parties	(a) Significant transactions between the controlling company and related companies for the years ended December 31, 2020, 2021 and 2022 were as follows: 1) For the year ended December 31, 2020 (in millions of Won) Sales and others(*1) Purchase and others(*2) Sales Others Purchase of Purchase of Outsourced Others Subsidiaries(*3) POSCO ENGINEERING & CONSTRUCTION CO.,LTD. ￦ 6,790 11,123 15 772,846 220 63,467 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 418,619 1,820 — — 28,523 639 POSCO ICT(*4) 2,747 4,996 — 374,914 41,384 181,554 eNtoB Corporation 15 60 214,750 34,217 76 25,870 POSCO CHEMICAL CO., LTD 258,154 34,944 456,780 23,003 304,135 4,816 POSCO ENERGY CO., LTD. 1,262 2,396 14,011 3 — 23,336 POSCO MOBILITY SOLUTION 381,591 — — — 32,325 1,500 POSCO INTERNATIONAL Corporation 5,644,017 56,322 342,520 — 11,371 4,375 POSCO Thainox Public Company Limited 311,924 137 2,538 — — — POSCO Canada Ltd. — 1,325 162,385 — — — POSCO Asia Co., Ltd. 1,514,154 1,060 151,373 4,331 1,508 3,915 Qingdao Pohang Stainless Steel Co., Ltd. 145,006 66 — — — 305 POSCO JAPAN Co., Ltd. 1,076,987 — 37,210 5,277 — 6,225 POSCO-VIETNAM Co., Ltd. 253,060 605 — — — 96 POSCO MEXICO S.A. DE C.V. 168,188 403 — — — 2,000 POSCO Maharashtra Steel Private Limited 328,943 2,507 — — — 479 POSCO (Suzhou) Automotive Processing Center Co., Ltd. 112,925 — — — — — POSCO VST CO., LTD. 208,464 218 — — — 156 POSCO INTERNATIONAL SINGAPORE PTE LTD. — — 600,580 — — — POSCO ASSAN TST STEEL INDUSTRY 264,786 948 2,314 — — 18 Others 806,672 22,069 71,261 45,695 238,496 135,429 11,904,304 140,999 2,055,737 1,260,286 658,038 454,180 Associates and joint ventures(*3) SNNC 5,651 4,739 545,001 — — — POSCO-SAMSUNG-Slovakia Processing Center 40,512 — — — — — Roy Hill Holdings Pty Ltd — 91,188 1,300,296 — — — Others 34,620 69,151 64,861 84,839 4,086 44,068 80,783 165,078 1,910,158 84,839 4,086 44,068 ￦ 11,985,087 306,077 3,965,895 1,345,125 662,124 498,248 (*1) Sales and others mainly consist of sales of steel products to subsidiaries, associates and joint ventures. (*2) Purchases and others mainly consist of subsidiaries’ purchases of construction services and purchases of raw materials to manufacture steel products. (*3) As of December 31, 2020, the company provided guarantees to related parties. (Note 39) (*4) Others (purchase) mainly consist of service fees related to maintenance and repair of ERP System. 2) For the year ended December 31, 2021 (in millions of Won) Sales and others(*1) Purchase and others(*2) Sales Others Purchase of Purchase of Outsourced Others Subsidiaries(*3) POSCO ENGINEERING & CONSTRUCTION CO.,LTD. ￦ 5,859 11,113 — 491,624 158 32,328 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 695,451 2,602 — — 39,014 627 POSCO ICT(*4) 1,605 4,996 — 324,275 46,037 181,221 eNtoB Corporation 14 — 381,633 65,254 115 25,242 POSCO CHEMICAL CO., LTD 318,808 31,917 462,013 14,358 298,431 3,724 POSCO ENERGY CO., LTD. 5,207 1,450 11,271 — — 26,137 POSCO MOBILITY SOLUTION 807,925 — — — 45,758 914 POSCO INTERNATIONAL Corporation 9,750,636 54,331 1,299,561 — 988 8,968 POSCO Thainox Public Company Limited 309,295 — — — — 69 POSCO Canada Ltd. — 1,372 202,523 — — — POSCO Asia Co., Ltd. 19,142 426 417 — — 1,648 Qingdao Pohang Stainless Steel Co., Ltd. 188,470 8 — — — 83 POSCO JAPAN Co., Ltd. 1,613,634 1 27,937 1,726 — 4,894 POSCO-VIETNAM Co., Ltd. 441,758 975 — — — 46 POSCO MEXICO S.A. DE C.V. 460,773 548 — — — 1,494 POSCO Maharashtra Steel Private Limited 899,675 903 — — — 229 POSCO (Suzhou) Automotive Processing Center Co., Ltd. 161,808 — — — — 2 POSCO VST CO., LTD. 201,517 — — — — 20 POSCO INTERNATIONAL SINGAPORE PTE LTD. — 1,453 1,704,193 — — — POSCO ASSAN TST STEEL INDUSTRY 278,749 734 8 — — 24 Others 1,337,458 56,161 220,000 63,116 276,202 153,677 17,497,784 168,990 4,309,556 960,353 706,703 441,347 Associates and joint ventures(*3) SNNC 72,797 2,514 736,441 — — 107 POSCO-SAMSUNG-Slovakia Processing Center 72,342 — — — — — Roy Hill Holdings Pty Ltd — 418,044 2,338,625 — — — Others 37,410 63,298 107,637 — — 49,741 182,549 483,856 3,182,703 — — 49,848 ￦ 17,680,333 652,846 7,492,259 960,353 706,703 491,195 (*1) Sales and others mainly consist of sales of steel products to subsidiaries, associates and joint ventures. (*2) Purchases and others mainly consist of subsidiaries’ purchases of construction services and purchases of raw materials to manufacture steel products. (*3) As of December 31, 2021, the company provided guarantees to related parties. (Note 39) (*4) Others (purchase) mainly consist of service fees related to maintenance and repair of ERP System. 3) For the year ended December 31, 2022 (in millions of Won) Sales and others(*1) Purchase and others(*2) Sales Dividends Others Purchase of Purchase of Outsourced Others Subsidiaries(*3) POSCO ￦ 87,165 — 2 — — — 10,446 POSCO ENGINEERING & CONSTRUCTION CO.,LTD. 7,502 16,555 7 — 80,306 — 13,086 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 133,743 — 215 — — 7,656 18 POSCO ICT(*4) 1,760 4,970 18 — 39,932 10,190 34,724 eNtoB Corporation 3 24 — 60,649 9,706 32 3,453 POSCO CHEMICAL CO., LTD 89,535 13,878 44 84,301 4,757 56,325 908 POSCO ENERGY CO., LTD. 4,331 — — 6,682 — — 3,925 POSCO MOBILITY SOLUTION 176,534 — — — — 8,802 28 POSCO INTERNATIONAL Corporation 2,102,356 62,093 — 244,230 — 768 1,049 POSCO Thainox Public Company Limited 49,359 22,867 — — — — 1 POSCO Canada Ltd. — — — 77,225 — — — Qingdao Pohang Stainless Steel Co., Ltd. 32,584 — — — — — — POSCO JAPAN Co., Ltd. 28,790 — — 835 — — 16 POSCO-VIETNAM Co., Ltd. 44,840 — 513 — — — — POSCO MEXICO S.A. DE C.V. 102,776 — 562 — — — — POSCO Maharashtra Steel Private Limited 171,806 — 1,130 — — — 120 POSCO (Suzhou) Automotive Processing Center Co., Ltd. 42,320 — — — — — 15 POSCO VST CO., LTD. 28,475 — — — — — — POSCO INTERNATIONAL SINGAPORE PTE LTD. — — 179 379,823 — — — POSCO ASSAN TST STEEL INDUSTRY 47,335 — 537 — — — 8 Others 203,869 2,452 6,574 61,457 18,844 53,139 223,222 3,355,083 122,839 9,781 915,202 153,545 136,912 291,019 Associates and joint ventures(*3) SNNC 3,242 5,348 8 148,239 — — — POSCO-SAMSUNG-Slovakia Processing Center 25,614 — — — — — — Roy Hill Holdings Pty Ltd — 186,813 — 210,455 — — — Others 78,048 209,457 14,704 14,015 — — 197 106,904 401,618 14,712 372,709 — — 197 ￦ 3,461,987 524,457 24,493 1,287,911 153,545 136,912 291,216 (*1) Sales and others mainly consist of sales of steel products to subsidiaries, associates and joint ventures. (*2) Purchases and others mainly consist of subsidiaries’ purchases of construction services and purchases of raw materials to manufacture steel products. (*3) As of December 31, 2022, the company provided guarantees to related parties. (Note 39) (*4) Others (purchase) mainly consist of service fees related to maintenance and repair of ERP System.
Related Account Balances With Related Parties	(b) The related account balances of receivables and payables resulting from significant transactions between the controlling company and related companies as of December 31, 2021 and 2022 are as follows: 1) December 31, 2021 (in millions of Won) Receivables Payables Trade accounts Others Total Trade accounts Accounts Others Total Subsidiaries POSCO ENGINEERING & CONSTRUCTION CO., LTD. ￦ 5,692 10 5,702 — 97,007 507 97,514 POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 95,001 — 95,001 — 154 5,082 5,236 POSCO ICT 221 3 224 3,736 155,064 27,562 186,362 eNtoB Corporation — — — 1,683 23,851 — 25,534 POSCO CHEMICAL CO., LTD 35,895 3,664 39,559 12,969 57,498 17,990 88,457 POSCO ENERGY CO., LTD. 1,485 292 1,777 — 6,169 10,066 16,235 POSCO MOBILITY SOLUTION 133,608 — 133,608 71 2,232 5,104 7,407 POSCO INTERNATIONAL Corporation 1,279,463 4 1,279,467 4,831 483 502 5,816 POSCO Thainox Public Company Limited 54,804 — 54,804 — — — — Qingdao Pohang Stainless Steel Co., Ltd. 35,423 — 35,423 — 83 — 83 POSCO MEXICO S.A. DE C.V. 179,428 251 179,679 — — — — POSCO Maharashtra Steel Private Limited 530,693 1,048 531,741 — — — — POSCO INTERNATIONAL SINGAPORE PTE LTD. — 14 14 169,565 90 — 169,655 POSCO ASSAN TST STEEL INDUSTRY 220,481 951 221,432 — — — — PT. KRAKATAU POSCO 1,395 14,750 16,145 — — — — Others 366,857 7,011 373,868 22,583 48,274 84,778 155,635 2,940,446 27,998 2,968,444 215,438 390,905 151,591 757,934 Associates and joint ventures SNNC 420 65 485 52,396 — — 52,396 Roy Hill Holdings Pty Ltd — 34,356 34,356 436,774 — — 436,774 FQM Australia Holdings Pty Ltd(*1) — 181,122 181,122 — — — — Others 168,167 15,895 184,062 5,549 187 — 5,736 168,587 231,438 400,025 494,719 187 — 494,906 ￦ 3,109,033 259,436 3,368,469 710,157 391,092 151,591 1,252,840 (*1) During the year ended December 31, 2021, the Company made a new loan of ￦ 2) December 31, 2022 (in millions of Won) Receivables Payables Trade accounts Others Total Accounts Others Total Subsidiaries POSCO ￦ 75,343 6,600 81,943 5,678 14,663 20,341 POSCO ENGINEERING & CONSTRUCTION CO., LTD. 3,808 660 4,468 — — — POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.) 818 — 818 — — — POSCO ICT 687 — 687 859 705 1,564 eNtoB Corporation — — — — — — POSCO CHEMICAL CO., LTD 8,550 — 8,550 — 5,086 5,086 POSCO ENERGY CO., LTD. 3,400 462 3,862 — 1,593 1,593 POSCO MOBILITY SOLUTION 489 — 489 — — — POSCO INTERNATIONAL Corporation 2,002 — 2,002 — 502 502 Qingdao Pohang Stainless Steel Co., Ltd. — — — 122 — 122 POSCO Maharashtra Steel Private Limited — 466 466 486 — 486 POSCO ASSAN TST STEEL INDUSTRY — 513 513 104 — 104 PT. KRAKATAU POSCO — 8,967 8,967 391 — 391 Others 1,918 5,618 7,536 11,874 3,335 15,209 97,015 23,286 120,301 19,514 25,884 45,398 Associates and joint ventures SNNC 94 — 94 — — — Roy Hill Holdings Pty Ltd 23,400 — 23,400 — — — FQM Australia Holdings Pty Ltd(*1) — 202,562 202,562 — — — Others 190 761 951 74 — 74 23,684 203,323 227,007 74 — 74 ￦ 120,699 226,609 347,308 19,588 25,884 45,472 (*1) FQM Australia Holdings Pty Ltd’s other receivable consists of long-term loans. During the year ended December 31, 2022, the company provided additional loan ￦
Company, excluding the controlling company [member]
Statement [LineItems]
Significant Transactions With Related Parties	(c) Significant transactions between the Company, excluding the controlling company, and related companies for the years ended December 31, 2020, 2021 and 2022 were as follows: 1) For the year ended December 31, 2020 (in millions of Won) Sales and others Purchase and others Sales Others Purchase of Others Associates and joint ventures POSCO PLANTEC Co., Ltd. ￦ 2,558 — 5 — New Songdo International City Development, LLC 125,909 26,451 — 137 SNNC 61,332 30 48,764 126,060 Chuncheon Energy Co., Ltd. 213 211 — — Noeul Green Energy Co., Ltd. 6,059 — — 829 CSP—Compania Siderurgica do Pecem 47,243 11,432 165,269 14,399 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 42,189 — 37,509 151 BX STEEL POSCO Cold Rolled Sheet Co., Ltd. — — 5,780 — POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd 8,757 — — — PT. Batutua Tembaga Raya — 1,061 28,174 — POSCO SeAH Steel Wire(Nantong) Co., Ltd. 29,964 — 384 — DMSA/AMSA — — 29,189 — South-East Asia Gas Pipeline Company Ltd. 7 71,299 — — POSCO MITSUBISHI CARBON TECHNOLOGY 31,068 19,530 3,608 701 Samcheok BluePower Co., Ltd 220,372 — — — TK CHEMICAL CORPORATION 104,749 — 26,863 — Pocheon-Hwado Highway Corp. 17,631 — — — UITrans LRT Co., Ltd. 2,263 — — — Roy Hill Holdings Pty Ltd — 22,797 — — Others 162,257 49,158 49,315 37,582 ￦ 862,571 201,969 394,860 179,859 2) For the year ended December 31, 2021 (in millions of Won) Sales and others Purchase and others Sales Dividends Others Purchase of Others Associates and joint ventures New Songdo International City Development, LLC ￦ 286,731 — 266 — 165 SNNC 75,129 — 743 19,720 40,090 Noeul Green Energy Co., Ltd. 6,127 — — — 1,896 CSP—Compania Siderurgica do Pecem 4,660 — — 96,179 — Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 46,323 — — 33,316 5,686 POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd. 14,673 — — — — POSCO SeAH Steel Wire (Nantong) Co., Ltd. 39,887 — — 164 — DMSA/AMSA — — — 9,875 — South-East Asia Gas Pipeline Company Ltd. — 27,828 7,564 — — POSCO MITSUBISHI CARBON TECHNOLOGY 65,746 — 10 4,347 180 Samcheok Blue Power Co., Ltd. 263,730 405 — — 4 TK CHEMICAL CORPORATION 14,906 — — 2,292 — Pocheon-Hwado Highway Corp. 62,829 — — — — UITrans LRT Co., Ltd. 10,736 — — — — Roy Hill Holdings Pty Ltd — 104,903 — — — Others 184,606 49,031 15,449 31,379 18,505 ￦ 1,076,083 182,167 24,032 197,272 66,526 3) For the year ended December 31, 2022 (in millions of Won) Sales and others Purchase and others Sales Dividends Others Purchase of Others Associates and joint ventures New Songdo International City Development, LLC ￦ 270,465 — — — 148 SNNC 161,565 — 412 613,514 1,755 Noeul Green Energy Co., Ltd. 5,531 — — — 1,716 CSP—Compania Siderurgica do Pecem 7,173 — — 126,123 22,663 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd(*1) 17,824 — — 24,190 — POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd. 14,863 — — — — POSCO SeAH Steel Wire (Nantong) Co., Ltd. 32,007 — — 357 — South-East Asia Gas Pipeline Company Ltd. — 14,541 2,974 — — POSCO MITSUBISHI CARBON TECHNOLOGY 134,498 24,000 — 5,446 — Samcheok Blue Power Co., Ltd. 502,259 9,992 26 — — Pocheon-Hwado Highway Corp. 93,428 — — — — UITrans LRT Co., Ltd. — — — — — Roy Hill Holdings Pty Ltd — 46,780 — 1,463,383 — Others 547,627 137,733 3,026 507,705 122,092 ￦ 1,787,240 233,046 6,438 2,740,718 148,374 (*1) Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd was excluded from the association due to the sale of its shares during the year ended December 31, 2022.
Related Account Balances With Related Parties	(d) The related account balances of receivables and payables resulting from significant transactions between the Company, excluding the controlling company, and related companies as of December 31, 2021 and December 31, 2022 are as follows: 1) December 31, 2021 (in millions of Won) Receivables(*1) Payables Trade Loans Others Total Trade Others Total Associates and joint ventures New Songdo International City Development, LLC ￦ 49,748 — 16,261 66,009 — — — Chuncheon Energy Co., Ltd. — — — — 257 — 257 Samcheok Blue Power Co., Ltd. 120,672 — — 120,672 — 23,683 23,683 Nickel Mining Company SAS — 62,611 477 63,088 — — — CSP—Compania Siderurgica do Pecem — — — — 3,144 — 3,144 Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd 9,108 — — 9,108 4,393 — 4,393 POSCO SeAH Steel Wire(Nantong) Co., Ltd. 19,271 — — 19,271 — 18 18 South-East Asia Gas Pipeline Company Ltd. — 47,423 — 47,423 — — — POSCO MITSUBISHI CARBON TECHNOLOGY 8,183 — — 8,183 1,083 — 1,083 Pocheon-Hwado Highway Corp. 14,162 — — 14,162 — — — UITrans LRT Co., Ltd. 7,048 29,099 — 36,147 — — — Roy Hill Holdings Pty Ltd — — 8,589 8,589 — — — SNNC 4,708 — — 4,708 143 — 143 Others 34,254 179,036 106,186 319,476 97 31,047 31,144 ￦ 267,154 318,169 131,513 716,836 9,117 54,748 63,865 (*1) As of December 31, 2021, the Company recognizes bad-debt allowance for receivables amounting to ￦ 2) December 31, 2022 (in millions of Won) Receivables(*1) Payables Trade Loans Others Total Trade Others Total Associates and joint ventures New Songdo International City Development, LLC ￦ 63,413 — 16,858 80,271 — 39,664 39,664 Chuncheon Energy Co., Ltd. — — — — — 50 50 Samcheok Blue Power Co., Ltd. 107,119 — — 107,119 — 18,224 18,224 Nickel Mining Company SAS — 63,024 263 63,287 — 358 358 CSP—Compania Siderurgica do Pecem 3 — — 3 — — — POSCO SeAH Steel Wire(Nantong) Co., Ltd. 7,096 — — 7,096 — — — South-East Asia Gas Pipeline Company Ltd. — — — — — — — POSCO MITSUBISHI CARBON TECHNOLOGY 12,589 — 52 12,641 1,198 4 1,202 Pocheon-Hwado Highway Corp. 16,297 — — 16,297 — — — UITrans LRT Co., Ltd. — 36,510 — 36,510 — 1,999 1,999 Roy Hill Holdings Pty Ltd — — 7,110 7,110 571,084 — 571,084 SNNC 7,827 — 51 7,878 44,124 198 44,322 POSCO(Guangdong) Automotive Steel Co., Ltd. — 35,131 — 35,131 — — — Others 98,920 185,022 112,538 396,480 54,708 25,241 79,949 ￦ 313,264 319,687 136,872 769,823 671,114 85,738 756,852 (*1) As of December 31, 2022, the Company recognizes bad-debt allowance for receivables amounting to ￦

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2022
Contingent liabilities on outstanding guarantees [member]
Statement [LineItems]
Summary of Contingent Liabilities	1) Contingent liabilities on outstanding guarantees provided by the Company as of December 31, 2022 are as follows: (in millions of Won) Guarantee limit Guarantee amount Guarantor Guarantee beneficiary Financial institution Foreign currency Won equivalent Foreign currency Won equivalent [The Company] POSCO HOLDINGS INC. POSCO Asia Co., Ltd. Credit Agricole and others USD 205,000,000 259,797 — — POSCO Maharashtra Steel Private Limited SMBC and others USD 139,784,000 177,149 109,784,000 139,129 PT. KRAKATAU POSCO Export-Import Bank of Korea and others USD 2,164,300,000 2,742,818 1,250,244,173 1,584,435 POSCO ASSAN TST STEEL INDUSTRY SOCIETE GENERALE and others USD 131,874,750 167,126 131,874,750 167,126 POSCO POSCO MEXICO S.A. DE C.V. BOA and others USD 60,000,000 76,038 60,000,000 76,038 POSCO-VIETNAM Co., Ltd. SMBC and others USD 156,000,000 197,699 109,999,999 139,403 POSCO COATED STEEL (THAILAND) CO., LTD. SMBC and others THB 5,501,000,000 201,667 4,765,000,000 174,685 POSCO INTERNATIONAL Corporation POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE. LTD. Export-Import Bank of Korea and others USD 180,000,000 228,114 150,000,000 190,095 POSCO INTERNATIONAL POWER (PNGLAE) LIMITED KDB bank USD 20,880,000 26,461 17,400,000 22,051 GOLDEN LACE POSCO INTERNATIONAL CO., LTD. Shinhan Bank and others USD 13,200,000 16,728 11,000,000 13,940 PT. Bio Inti Agrindo BTPN and others IDR 1,250,510,000,000 101,166 1,178,510,000,000 95,341 POSCO ASSAN TST STEEL INDUSTRY ING USD 14,652,750 18,569 14,652,750 18,569 POSCO INTERNATIONAL Deutschland GmbH Bank Mendes Gans Amsterdam USD 50,000,000 63,365 — — POSCO INTERNATIONAL AMERICA Corp. 15,002,042 19,012 POSCO INTERNATIONAL JAPAN Corp. 7,521,345 9,532 POSCO INTERNATIONAL SINGAPORE PTE. LTD. — — POSCO INTERNATIONAL Malaysia SDN BHD — — POSCO INTERNATIONAL Italia S.R.L. — — POSCO INTERNATIONAL MEXICO S.A. de C.V. — — (in millions of Won) Guarantee limit Guarantee amount Guarantor Guarantee beneficiary Financial institution Foreign currency Won equivalent Foreign currency Won equivalent GRAIN TERMINAL HOLDING PTE. LTD. Export-Import Bank of Korea and others USD 27,000,000 34,217 27,000,000 34,217 POSCO INTERNATIONAL E&P MALAYSIA SDN. BHD. SC, Malaysia USD 6,000,000 7,604 6,000,000 7,604 POSCO ENGINEERING & CONSTRUCTION CO., LTD. POSCO E&C Vietnam Co., Ltd. POSCO Asia Co., Ltd. and others USD 36,000,000 45,623 36,000,000 45,623 PT.POSCO E&C INDONESIA POSCO Asia Co., Ltd. and others USD 25,900,000 32,823 25,900,000 32,823 POSCO ICT PT.POSCO ICT INDONESIA POSCO Asia Co., Ltd. and others USD 1,500,000 1,901 300,000 380 POSCO STEELEON Co., Ltd. Myanmar POSCO C&C Company, Limited. POSCO Asia Co., Ltd. and others USD 13,986,947 17,726 11,952,170 15,147 POSCO ENERGY CO., LTD PT. KRAKATAU POSCO ENERGY POSCO Asia Co., Ltd. and others USD 65,102,271 82,504 65,102,271 82,504 [Associates and joint ventures] POSCO HOLDINGS INC. CSP—Compania Siderurgica do Pecem Export-Import Bank of Korea and others USD 420,000,000 532,264 358,266,014 454,030 BNDES BRL 464,060,000 111,244 464,060,000 111,244 Nickel Mining Company SAS SMBC EUR 46,000,000 62,155 46,000,000 62,155 POSCO LLP POSUK Titanium SMBC USD 13,500,000 17,109 13,250,000 16,792 POSCO INTERNATIONAL Corporation GLOBAL KOMSCO Daewoo LLC Hana Bank USD 6,650,000 8,428 6,300,000 7,984 POSCO ENGINEERING & CONSTRUCTION CO., LTD. Chun-cheon Energy Co., Ltd. Kookmin Bank and others KRW 149,200 149,200 143,110 143,110 [Others] POSCO INTERNATIONAL Corporation SHERRITT INTERNATIONAL CORP. Export-Import Bank of Korea USD 21,818,182 27,650 860,880 1,091 POSCO ENGINEERING & CONSTRUCTION CO., LTD. Busan Sanseong Tunnel and others Balhae Infrastructure Fund and others KRW 1,491,670 1,491,670 547,785 547,785 POSCO ICT Busan Sanseong Tunnel Kookmin Bank KRW 7,621 7,621 6,391 6,391 POSCO AUSTRALIA PTY LTD Department of Trade and Investment (NSW Government) and others Woori Bank and others AUD 14,242,095 12,226 14,242,095 12,226 PT. Bio lnti Agrindo KSU Mandob Bank Muamalat IDR 80,000,000,000 6,472 80,000,000,000 6,472 POSCO Maharashtra Steel Private Limited Gail India and others HSBC and others INR 772,210,905 11,823 772,210,905 11,823 USD 3,773,148,900 4,781,713 2,428,410,394 3,077,525 KRW 1,648,491 1,648,491 697,286 697,286 IDR 1,330,510,000,000 107,638 1,258,510,000,000 101,813 INR 772,210,905 11,823 772,210,905 11,823 THB 5,501,000,000 201,667 4,765,000,000 174,685 EUR 46,000,000 62,155 46,000,000 62,155 AUD 14,242,095 12,226 14,242,095 12,226 BRL 464,060,000 111,244 464,060,000 111,244 2) Contingent liabilities on debt acquisition, financial support agreement provided by the Company as of December 31, 2022 are as follows: (in millions of Won) Agreed amount Executed amount Provider Recipient Creditor Foreign Won Foreign Won [The Company] POSCO ENGINEERING & CONSTRUCTION CO., LTD. JB CLARK HILLS HSBC and others USD 30,000,000 38,019 27,500,000 34,851 [Associates and joint ventures] POSCO ENGINEERING & CONSTRUCTION CO., LTD. New Songdo International City Development, LLC Others KRW 520,000 520,000 453,400 453,400 POHANG E&E Coi., LTD Heungkuk Life Insurance Co., Ltd. KRW 71,930 71,930 50,492 50,492 UITrans LRT Co., Ltd Kookmin Bank and others KRW 205,051 205,051 176,600 176,600 Pocheon-Hwado Highway Corp. Lotte Insurance Co., Ltd and others KRW 319,526 319,526 95,137 95,137 Pureun Tongyeong Enviro Co., Ltd. KDB Bank and others KRW 22,714 22,714 13,035 13,035 Pure Gimpo.Co.,Ltd KDB Bank and others KRW 51,559 51,559 27,213 27,213 Clean Iksan Co.,Ltd SAMSUNG FIRE & MARINE INSURANCE KRW 44,054 44,054 27,710 27,710 POSCO ICT UITrans LRT Co., Ltd Kookmin Bank KRW 43,736 43,736 35,261 35,261 [Others] POSCO ENGINEERING & CONSTRUCTION CO., LTD. Incheon-Gimpo Expressway Co., Ltd and others Kookmin Bank and others KRW 3,823,072 3,823,072 1,627,863 1,627,863 POSCO ICT Incheon-Gimpo Expressway Co., Ltd and others Kookmin Bank and others KRW 216,051 216,051 94,474 94,474
Litigations in progress [member]
Statement [LineItems]
Summary of Contingent Liabilities	As of December 31, 2022, litigations in progress that POSCO HOLDINGS INC. and certain subsidiaries are defendants in legal actions arising from the normal course of business are as follows: (in millions of Won, in thousands of foreign currencies) Company Legal Claim amount Won Description POSCO HOLDINGS INC. 2 KRW 9,445 9,445 Lawsuit on claim for damages and others POSCO 46 KRW 254,990 254,990 Lawsuit on claim for employee status and others POSCO INTERNATIONAL Corporation 1 CAD 79,000 73,895 Lawsuit on claim for damages 2 INR 4,469,396 68,426 Lawsuit on claim for payment on guarantees and others(*1) 6 KRW 15,116 15,116 Lawsuit on claim for damages and others 1 PKR 124,775 697 Lawsuit on claim for damages 5 USD 73,141 92,692 Lawsuit on claim for damages and others POSCO ENGINEERING & CONSTRUCTION CO., LTD. 107 KRW 546,364 546,364 Lawsuit on claim for damages and others(*1) POSCO ICT 1 BRL 7,586 1,818 Lawsuit on claim for damages 14 KRW 7,751 7,751 Lawsuit on claim for damages and others(*1) POSCO ENERGY CO., LTD. 2 KRW 66,505 66,505 Lawsuit on claim for damages and others POSCO CHEMCAL CO., LTD 3 KRW 1,514 1,514 Lawsuit on claim for damages and others POSCO M-TECH 1 KRW 45 45 Lawsuit on claim for damages and others POSCO A&C 8 KRW 11,556 11,556 Lawsuit on claim for payment on construction and others(*1) POSCO O&M Co., Ltd. 3 KRW 1,035 1,035 Lawsuit on claim for damages and others eNtoB Corporation 1 KRW 14 14 Lawsuit on claim for damages and others POSCO MOBILITY SOLUTION 1 KRW 6 6 Lawsuit on claim for wages POSCO Humans 2 KRW 233 233 Lawsuit on claim for invalidation of dismissal(*1) POSCO-India Pune Processing Center. 1 INR 2,197,800 33,648 Lawsuit over contract dispute POSCO INTERNATIONAL VIETNAM 1 VND 579,407 31 Lawsuit over contract dispute(*1) POSCO Engineering and Construction India Private Limited 2 INR 493,968 7,563 Lawsuit on claim for payment and others POSCO ENGINEERING & CONSTRUCTION DO BRAZIL 79 BRL 185,766 44,532 Lawsuit on claim for payment on construction and others(*1) POSCO ENGINEERING (THAILAND) 1 THB 160,929 5,900 Lawsuit on claim for payment on construction QINGDAO POHANG STAINLESS STEEL CO., LTD. 4 CNY 55,760 10,117 Lawsuit over contract dispute POSCO INDIA PROCESSING CENTER PRIVATE LIMITED 1 INR 54,420 833 Lawsuit on claim for damages POSCO E&C CHINA CO., LTD. 2 CNY 24,837 4,506 Lawsuit over contract dispute and others POSCO SOUTH EAST ASIA PTE. LTD 2 USD 15,900 20,150 Lawsuit over contract dispute and others Brazil Sao Paulo Steel Processing Center 4 BRL 3,844 921 Lawsuit on claim for labor and others POSCO Thainox Public Company Limited 1 THB 3,000 110 Lawsuit on invalidation of a check POSCO(Yantai) Automotive Processing Center Co., Ltd 1 CNY 231 42 Lawsuit on claim for labor and others POSCO ASSAN TST STEEL INDUSTRY 6 USD 133 168 Lawsuit on claim for labor and others(*1) POSCO TNPC Otomotiv Celik San. Ve Tic. A.S 3 TRY 93 6 Lawsuit over industrial accidents and others(*1) POSCO(Dalian) IT Center Development 1 CNY 49 9 Lawsuit on claim for damages POSCO-India Private Limited 1 INR 2,466 38 Lawsuit on claim for wages PT. KRAKATAU POSCO ENERGY 1 IDR 38,243,593 3,094 Lawsuit on claim for wages POSCO INTERNATIONAL SINGAPORE PTE. LTD. 1 USD 54,665 69,276 Lawsuit on claim for damages (*1) The Company made a reliable estimate in 57 lawsuits by considering the possibility and amount of expected outflow of resources and recognized ￦
Disclosure of major contingencies	Other major contingencies for the Company as of December 31, 2022 are as follows: Company Description POSCO HOLDINGS INC. POSCO HOLDINGS INC. has provided 3 blank checks to Korea Energy Agency as collateral for long-term foreign currency borrowings. POSCO HOLDINGS INC. is jointly liable for guarantees of indebtedness (including financial guarantee contracts) before the spin off date of POSCO. POSCO INTERNATIONAL Corporation As of December 31, 2022, POSCO INTERNATIONAL Corporation has provided 30 blank promissory notes and 23 blank checks to Korea Energy Agency and others as collateral for the guarantee on performance for contracts and others. POSCO ENGINEERING & CONSTRUCTION CO., LTD. As of December 31, 2022, POSCO ENGINEERING & CONSTRUCTION CO., LTD. has provided 34 blank checks and 4 blank promissory notes as collateral for agreements and outstanding loans, and has provided joint guarantee of ￦7,515,815 million for guarantee that partners had issued from Korea Housing & Urban Guarantee Corporation and others. POSCO ICT As of December 31, 2022, POSCO ICT has provided 6 blank checks to financial institutions as collateral for the guarantee on performance for contracts and others.

Additional Information of Sta_2

Additional Information of Statement of Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Changes in Operating Assets and Liabilities	(a) Changes in operating assets and liabilities for the years ended December 31, 2020, 2021 and 2022 were as follows: (in millions of Won) 2020 2021 2022 Trade accounts and notes receivable ￦ 818,857 (1,492,664 ) 531,848 Other receivables 210,630 (441,412 ) (96,141 ) Inventories 1,443,931 (6,346,717 ) (195,309 ) Other current assets 51,750 (210,614 ) (230,084 ) Other non-current assets (92,068 ) (246,066 ) 42,767 Trade accounts and notes payable 594,414 1,401,942 141,925 Other payables (78,997 ) 170,209 611,932 Other current liabilities 101,027 241,998 (213,738 ) Provisions (81,988 ) (154,471 ) (295,624 ) Payments of severance benefits (225,293 ) (253,207 ) (300,353 ) Plan assets (94,121 ) (186,548 ) (59,461 ) Other non-current liabilities 207,766 473,240 (306,251 ) ￦ 2,855,908 (7,044,310 ) (368,489 )
Changes in Liabilities Arising from Financial Activities	(b) Changes in liabilities arising from financial activities for the years ended December 31, 2021 and 2022 were as follows: 1) December 31, 2021 (in millions of Won) Liabilities Derivatives Short-term Long-term Dividend Finance Beginning ￦ 5,194,395 15,303,212 2,703 739,675 178,988 Changes from financing cash flows (329,897 ) 639,414 (1,327,414 ) (281,288 ) (11,338 ) Changes arising from obtaining or losing control of subsidiaries or other business — 41,359 — — — The effect of changes in foreign exchange rates 245,926 689,078 — 57,814 — Changes in fair values — (54,057 ) — — (59,668 ) Other changes: Decrease in retained earnings — — 1,259,272 — — Decrease in non-controlling interest — — 69,485 — — Interest expenses — 11,786 — 22 — Increase in lease assets — — — 261,791 — Ending ￦ 5,110,424 16,630,792 4,046 778,014 107,982 2) December 31, 2022 (in millions of Won) Liabilities Derivatives Short-term Long-term Dividend Finance Beginning ￦ 5,110,424 16,630,792 4,046 778,014 107,982 Changes from financing cash flows 1,764,569 415,692 (1,234,899 ) (268,082 ) 102,973 Changes arising from obtaining or losing control of subsidiaries or other business — 142,290 — 193,572 — The effect of changes in foreign exchange rates (41,873 ) 355,540 — (96,771 ) — Changes in fair values — (85,790 ) — — (19,458 ) Other changes: Decrease in retained earnings — — 1,138,107 — — Decrease in non-controlling interest — — 97,117 — — Interest expenses — 14,018 — 34,935 — Increase in lease assets — — — 181,814 — Ending ￦ 6,833,120 17,472,542 4,371 823,482 191,497

Operating Segments and Geogra_2

Operating Segments and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2022
Text block [abstract]
Information about Reportable Segments	(b) Information about reportable segments as of and for the years ended December 31, 2020, 2021 and 2022 were as follows: 1) As of and for the year ended December 31, 2020 ① The segment results as previously disclosed are as follows: (in millions of Won) Steel Trading Construction Others Total External revenues ￦ 28,892,877 19,345,222 6,576,170 2,978,527 57,792,796 Internal revenues 15,365,443 12,946,803 1,033,821 2,609,941 31,956,008 Including inter segment revenue 10,545,577 6,413,835 965,409 2,442,961 20,367,782 Total revenues 44,258,320 32,292,025 7,609,991 5,588,468 89,748,804 Interest income 233,833 44,528 103,974 22,607 404,942 Interest expenses (467,767 ) (127,800 ) (60,768 ) (69,152 ) (725,487 ) Depreciation and amortization (3,040,316 ) (313,134 ) (71,144 ) (236,763 ) (3,661,357 ) Impairment loss on property, plant and equipment and others (37,623 ) (8,226 ) (32,184 ) (224 ) (78,257 ) Share of loss of equity-accounted investees, net (409,889 ) (116,074 ) (65,409 ) (17,631 ) (609,003 ) Income tax expense (77,682 ) (92,589 ) (57,178 ) (72,929 ) (300,378 ) Segment profit 711,883 157,152 150,021 293,513 1,312,569 Segment total assets 71,105,618 13,152,462 7,658,130 9,356,528 101,272,738 Investment in subsidiaries, associates and joint ventures 15,425,607 1,958,333 603,752 907,645 18,895,337 Acquisition of non-current assets 2,819,217 180,005 36,385 451,158 3,486,765 Segment total liabilities 20,976,864 8,804,555 4,260,003 4,896,040 38,937,462 ② The restated segment results due to the change of operating segments are as follows: Green infrastructure (in millions of Won) Steel Construction Trading Energy and Green materials Others Total External revenues ￦ 28,892,877 6,576,170 19,345,222 1,739,469 771,575 467,483 57,792,796 Internal revenues 15,365,443 1,033,821 12,946,803 829,141 842,113 938,687 31,956,008 Including inter segment revenue 10,545,577 965,409 6,413,835 805,270 838,099 919,085 20,487,275 Total revenues 44,258,320 7,609,991 32,292,025 2,568,610 1,613,688 1,406,170 89,748,804 Interest income 233,833 103,974 44,528 15,944 1,909 4,754 404,942 Interest expenses (467,767 ) (60,768 ) (127,800 ) (57,747 ) (7,132 ) (4,273 ) (725,487 ) Depreciation and amortization (3,040,316 ) (313,134 ) (71,144 ) (129,478 ) (68,633 ) (38,652 ) (3,661,357 ) Impairment loss on property, plant and equipment and others (37,623 ) (32,184 ) (8,226 ) (141 ) (83 ) — (78,257 ) Share of loss of equity-accounted investees, net (409,889 ) (65,409 ) (116,074 ) (17,631 ) — — (609,003 ) Income tax expense (77,682 ) (57,178 ) (92,589 ) (48,003 ) (8,123 ) (16,803 ) (300,378 ) Segment profit (loss) 711,882 150,021 157,152 178,111 50,426 64,976 1,312,569 Segment assets 71,105,618 7,658,130 13,152,462 5,121,834 2,511,066 1,723,628 101,272,738 Investment in subsidiaries, associates and joint ventures 15,425,607 603,752 1,958,333 609,725 158,560 139,360 18,895,337 Acquisition of non-current assets 2,819,217 180,005 36,385 62,243 263,646 125,269 3,486,765 Segment liabilities 20,976,864 4,260,003 8,804,555 3,035,137 1,084,585 776,318 38,937,462 2) As of and for the year ended December 31, 2021 ① The segment results as previously disclosed are as follows: (in millions of Won) Steel Trading Construction Others Total External revenues ￦ 41,093,405 25,065,608 6,398,366 3,774,966 76,332,345 Internal revenues 22,455,511 20,224,841 1,014,148 3,012,917 46,707,417 Including inter segment revenue 14,940,813 10,653,742 940,408 2,800,594 29,335,557 Total revenues 63,548,916 45,290,449 7,412,514 6,787,883 123,039,762 Interest income 179,841 30,265 72,830 35,305 318,241 Interest expenses (313,769 ) (100,419 ) (39,134 ) (61,152 ) (514,474 ) Depreciation and amortization (3,000,179 ) (343,489 ) (69,777 ) (271,898 ) (3,685,343 ) Impairment loss on property, plant and equipment and others (249,645 ) (66,157 ) (10 ) (36,774 ) (352,586 ) Share of loss of equity-accounted investees, net (261,363 ) (70,321 ) (45,778 ) (11,874 ) (389,336 ) Income tax expense (2,045,079 ) (101,622 ) (116,799 ) (66,927 ) (2,330,427 ) Segment profit 6,587,903 324,888 164,276 360,883 7,437,950 Segment total assets 80,953,507 16,373,409 8,136,549 11,923,740 117,387,205 Investment in subsidiaries, associates and joint ventures 16,567,555 2,066,688 538,484 1,195,600 20,368,327 Acquisition of non-current assets 2,194,346 478,278 10,233 928,947 3,611,804 Segment total liabilities 25,714,577 11,049,017 4,451,055 5,379,210 46,593,859 ② The restated segment results due to the change of operating segments are as follows: Green infrastructure (in millions of Won) Steel Construction Trading Energy and Green materials Others Total External revenues ￦ 41,093,405 6,398,366 25,065,608 2,061,277 1,241,957 471,732 76,332,345 Internal revenues 22,455,511 1,014,148 20,224,841 854,982 847,205 1,310,730 46,707,417 Including inter segment revenue 14,940,813 940,408 10,653,742 828,635 843,576 1,284,320 29,491,494 Total revenues 63,548,916 7,412,514 45,290,449 2,916,259 2,089,162 1,782,462 123,039,762 Interest income 179,841 72,830 30,265 12,905 19,073 3,327 318,241 Interest expenses (313,769 ) (39,134 ) (100,419 ) (47,827 ) (9,373 ) (3,952 ) (514,474 ) Depreciation and amortization (3,000,179 ) (69,777 ) (343,489 ) (142,426 ) (84,390 ) (45,082 ) (3,685,343 ) Impairment loss on property, plant and equipment and others (249,645 ) (10 ) (66,157 ) (25,270 ) (11,504 ) — (352,586 ) Share of loss of equity-accounted investees, net (261,363 ) (45,778 ) (70,321 ) (11,874 ) — — (389,336 ) Income tax expense (2,045,079 ) (116,799 ) (101,622 ) (37,970 ) (10,698 ) (18,259 ) (2,330,427 ) Segment profit 6,587,903 164,276 324,888 182,739 111,756 66,388 7,437,950 Segment assets 80,953,507 8,136,549 16,373,409 5,459,441 4,692,597 1,771,702 117,387,205 Investment in subsidiaries, associates and joint ventures 16,567,555 538,484 2,066,688 886,318 188,532 120,750 20,368,327 Acquisition of non-current assets 2,194,346 10,233 478,278 152,445 661,376 115,126 3,611,804 Segment liabilities 25,714,577 4,451,055 11,049,017 3,124,777 1,519,026 735,407 46,593,859 3) As of and for the year ended December 31, 2022 Green infrastructure (in millions of Won) Steel Construction Trading Energy and Green materials Others Total External revenues ￦ 44,546,966 7,667,696 25,955,458 3,998,959 2,451,785 129,340 84,750,204 Internal revenues 26,102,681 1,217,795 23,634,302 3,426,549 936,975 1,040,196 56,358,498 Including inter segment revenue 18,226,727 1,074,088 11,853,034 3,442,447 923,552 1,818,578 37,338,426 Total revenues 70,649,647 8,885,491 49,589,760 7,425,508 3,388,760 1,169,536 141,108,702 Interest income 141,047 68,774 37,603 23,928 22,708 (13,319 ) 280,741 Interest expenses (446,058 ) (44,309 ) (156,663 ) (56,799 ) (11,770 ) (84 ) (715,683 ) Depreciation and amortization (3,036,041 ) (64,813 ) (392,969 ) (149,754 ) (94,416 ) (20,811 ) (3,758,804 ) Impairment loss on property, plant and equipment and others (234,904 ) (32 ) (23,035 ) (292 ) (1,053 ) — (259,316 ) Share of loss of equity-accounted investees, net (6,239 ) (2,792 ) (29,541 ) (8,552 ) — (263,264 ) (310,388 ) Income tax expense (565,353 ) (92,715 ) (189,535 ) (93,210 ) (14,120 ) (1,785,487 ) (2,740,420 ) Segment profit 1,711,940 137,911 525,500 293,859 109,209 (1,087,428 ) 1,690,991 Segment assets 66,143,103 8,878,530 15,693,605 6,612,825 6,652,469 51,421,190 155,401,722 Investment in subsidiaries, associates and joint ventures 2,659,443 565,873 1,821,243 957,168 600,277 44,951,810 51,555,814 Acquisition of non-current assets 3,287,878 53,708 622,678 125,942 1,169,725 370,837 5,630,768 Segment liabilities 25,111,665 4,937,907 10,097,503 3,683,068 2,127,424 4,156,863 50,114,430
Reconciliation of Segment Revenues, Profit or Loss, Assets and Liabilities and Other Significant Items	(c) Reconciliations of total segment revenues, profit or loss, assets and liabilities, and other significant items to their respective consolidated financial statement line items are as follows: 1) Revenues (in millions of Won) 2020 2021 2022 Total revenue for reportable segments ￦ 89,748,804 123,039,762 141,108,702 Elimination of inter-segment revenue (31,956,008 ) (46,707,417 ) (56,358,498 ) Basis difference(*2) (326,118 ) (323,144 ) 253,412 ￦ 57,466,678 76,009,201 85,003,616 2) Profit (in millions of Won) 2020 2021 2022 Total profit for reportable segments ￦ 1,312,569 7,437,950 1,690,991 Goodwill and corporate FV adjustments (74,685 ) (62,500 ) (68,771 ) Elimination of inter-segment profit(Loss) 550,268 (179,560 ) 1,938,263 Income tax expense 236,934 2,220,183 453,883 Basis difference(*2) (52,322 ) (26,264 ) 33,125 Profit before income tax expense ￦ 1,972,764 9,389,809 4,047,491 3) Assets (in millions of Won) 2021 2022 Total assets for reportable segments(*1) ￦ 117,387,205 155,401,722 Equity-accounted investees (15,532,200 ) (46,559,264 ) Goodwill and corporate FV adjustments 2,411,729 2,366,408 Elimination of inter-segment assets (12,795,120 ) (12,802,085 ) Basis difference(*2) 827,276 614,969 ￦ 92,298,890 99,021,750 (*1) As segment assets and liabilities are determined based on separate financial statements, the carrying amount of assets of subsidiaries, which are in a different segment from that of their immediate parent company, in the separate financial statements the immediate parent company is eliminated upon consolidation. In addition, the amount of investment in associates and joint ventures are adjusted from the amount reflected in segment assets to that determined using equity method in consolidated financial statements. 4) Liabilities (in millions of Won) 2021 2022 Total liabilities for reportable segments ￦ 46,593,859 50,114,430 Corporate FV adjustments 236,833 215,760 Elimination of inter-segment liabilities (10,164,021 ) (10,180,810 ) Basis difference(*2) 918,253 680,473 ￦ 37,584,924 40,829,853 5) Other significant items a) December 31, 2020 (in millions of Won) Total segment Goodwill and Elimination of inter-segment Basis Consolidated Interest income ￦ 404,942 — (32,768 ) — 372,174 Interest expenses (725,487 ) 806 85,884 — (638,797 ) Depreciation and amortization (3,661,357 ) (102,385 ) 142,002 — (3,621,740 ) Share of profit of equity-accounted investees, net (609,003 ) — 742,300 — 133,297 Income tax expense (300,378 ) 27,655 35,789 12,662 (224,272 ) Impairment loss on property, plant and equipment and others (78,257 ) (761 ) (150,828 ) — (229,846 ) ￦ (4,969,540 ) (74,685 ) 822,379 12,662 (4,209,184 ) b) December 31, 2021 (in millions of Won) Total segment Goodwill and Elimination of inter-segment Basis Consolidated Interest income ￦ 318,241 — (25,998 ) — 292,243 Interest expenses (514,474 ) 605 74,043 — (439,826 ) Depreciation and amortization (3,685,343 ) (88,927 ) 194,824 — (3,579,446 ) Share of profit of equity-accounted investees, net (389,336 ) — 1,038,905 — 649,569 Income tax expense (2,330,427 ) 25,719 84,525 6,356 (2,213,827 ) Impairment loss on property, plant and equipment and others (352,586 ) — (183,262 ) — (535,848 ) ￦ (6,953,925 ) (62,603 ) 1,183,037 6,356 (5,827,135 ) c) December 31, 2022 (in millions of Won) Total segment Goodwill and Elimination of inter-segment Basis Consolidated Interest income ￦ 280,741 — (33,736 ) — 247,005 Interest expenses (715,683 ) — 108,225 — (607,458 ) Depreciation and amortization (3,758,804 ) (95,195 ) 166,378 — (3,687,621 ) Share of profit of equity-accounted investees, net (310,388 ) — 986,648 — 676,260 Income tax expense (2,740,420 ) 25,803 2,260,734 (7,651 ) (461,534 ) Impairment loss on property, plant and equipment and others (259,316 ) — (324,529 ) — (583,845 ) ￦ (7,503,870 ) (69,392 ) 3,163,720 (7,651 ) (4,417,193 ) (*2) Basis difference is related to the differences in recorded revenue and expenses for development and sale of certain residential real estates between the report reviewed by management and the consolidated financial statements.
Revenue and Non-current Assets by Geographic Area	(d) Revenue by geographic area for the years ended December 31, 2020, 2021 and 2022 was as follows: (in millions of Won) 2020 2021 2022 Domestic ￦ 36,806,651 49,732,699 54,519,647 Japan 1,788,839 2,200,855 2,651,584 China 7,238,063 7,146,695 7,430,619 Asia-other 7,897,041 11,425,513 12,614,612 North America 1,308,943 2,083,309 2,413,054 Others 2,753,259 3,743,274 5,120,688 57,792,796 76,332,345 84,750,204 Basis difference (326,118 ) (323,144 ) 253,412 ￦ 76,009,201 85,003,616 The information on geography, segment revenue is presented based on the geographical location of customers. (e) Non-current assets by geographic area as of December 31, 2021 and 2022 are as follows: (in millions of Won) 2021 2022 Domestic ￦ 27,806,262 28,623,582 Japan 155,556 139,636 China 1,175,593 1,199,461 Asia-other 4,198,982 4,768,410 North America 313,356 323,543 Others 1,199,335 2,639,045 ￦ 34,849,084 37,693,677 Non-current assets by geographic area include investment property, property, plant and equipment, goodwill and other intangible assets. (f) There are no customers whose revenue is 10% or more of the consolidated revenue.

Business combination (Tables)

Business combination (Tables)	12 Months Ended
	Dec. 31, 2022
Disclosure of detailed information about business combination [line items]
Summary of fair value of the identifiable assets acquired and liabilities assumed	The fair value of the identifiable assets acquired and liabilities assumed as of the acquisition date is as follows: (in millions of Won) April 1, 2022 Assets Cash and cash equivalents ￦ 39,967 Trade accounts, notes receivable and other receivables, net 21,455 Inventories 12,693 Other current assets 3,054 Total current assets 77,169 Other long-term financial assets 1,257 Property, plant and equipment, net 244,058 Intangible assets, net 1,011,517 Total non-current assets 1,256,832 Total assets ￦ 1,334,001 Liabilities Trade accounts and notes payable ￦ 78,027 Short-term borrowings 71,959 Other short-term financial liabilities 14,471 Provisions 343 Other current liabilities 21,544 Total current liabilities 186,344 Other payables 181,913 Long-term borrowings 68,034 Other long-term financial liabilities 1,553 Other non-current liabilities 70,982 Long-term provisions 24,115 Total non-current liabilities 346,597 Total liabilities ￦ 532,941 Net assets 801,060 Share acquisition ratio (%) 100 Net assets acquired 801,060 Consideration paid 801,060

General Information - Additiona

General Information - Additional Information (Detail) ₩ in Millions		12 Months Ended
	Mar. 02, 2022	Dec. 31, 2022 KRW (₩) Entity	Dec. 31, 2021 KRW (₩)	Dec. 31, 2020 KRW (₩)
Disclosure of general information [Line Items]
Number of associates and joint ventures | Entity		130
Increase (decrease) in ownership interests in subsidiaries | ₩		₩ 418,044	₩ 543,464	₩ 134,958
Dividends paid by subsidiaries | ₩		122,838	133,125
POSCO CHEMICAL CO., LTD. and others [member]
Disclosure of general information [Line Items]
Increase (decrease) in ownership interests in subsidiaries | ₩		₩ (7,827)	₩ 83,546
POSCO HOLDINGS INC [Member]
Disclosure of general information [Line Items]
Ownership (%)	100%
Domestic [member]
Disclosure of general information [Line Items]
Number of subsidiaries | Entity		45
Foreign [member]
Disclosure of general information [Line Items]
Number of subsidiaries | Entity		135

General Information - POSCO HOL

General Information - POSCO HOLDINGS INC.'S Shareholders (Detail) - shares	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of details of shareholders [line items]
Number of shares	84,571,230	87,186,835	87,186,835
Ownership (%)	100%
National Pension Service [member]
Disclosure of details of shareholders [line items]
Number of shares	7,706,725
Ownership (%)	9.11%
BlackRock Fund Advisors(*1)
Disclosure of details of shareholders [line items]
Number of shares	4,390,734
Ownership (%)	5.19%
Nippon Steel Corporation [Member]
Disclosure of details of shareholders [line items]
Number of shares	2,894,712
Ownership (%)	3.42%
Government of Singapore [Member]
Disclosure of details of shareholders [line items]
Number of shares	3,336,926
Ownership (%)	3.95%
FMR LLC (Fidelity Management&Research)
Disclosure of details of shareholders [line items]
Number of shares	2,783,481
Ownership (%)	3.29%
Others [member]
Disclosure of details of shareholders [line items]
Number of shares	63,458,652
Ownership (%)	75.04%

General Information - Details o

General Information - Details of Consolidated Subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Domestic [member] | POSCO [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel, rolled products and plates
Ownership (%)	100%
Region	Pohang
Domestic [member] | POSCO [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Domestic [member] | POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Engineering and construction
Ownership (%)	52.80%	52.80%
Region	Pohang
Domestic [member] | POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	52.80%	52.80%
Domestic [member] | POSCO STEELEON CO., Ltd. (formerly, COATED & COLOR STEEL Co., Ltd.) [member]
Disclosure of subsidiaries [line items]
Principal operations	Coated steel manufacturing
Ownership (%)	56.87%	56.87%
Region	Pohang
Domestic [member] | POSCO STEELEON CO., Ltd. (formerly, COATED & COLOR STEEL Co., Ltd.) [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		56.87%
Domestic [member] | POSCO STEELEON CO., Ltd. (formerly, COATED & COLOR STEEL Co., Ltd.) [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	56.87%
Domestic [member] | POSCO ICT [member]
Disclosure of subsidiaries [line items]
Principal operations	Computer hardware and software distribution
Ownership (%)	65.38%	65.38%
Region	Pohang
Domestic [member] | POSCO ICT [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	65.38%	65.38%
Domestic [member] | POSCO Research Institute [member]
Disclosure of subsidiaries [line items]
Principal operations	Economic research and consulting
Ownership (%)	100%	100%
Region	Seoul
Domestic [member] | POSCO Research Institute [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | POSCO O&M Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Business facility maintenance
Ownership (%)	100%	100%
Region	Seoul
Domestic [member] | POSCO O&M Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	47.17%	47.17%
Domestic [member] | POSCO O&M Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	52.83%	52.83%
Domestic [member] | POSCO A&C [member]
Disclosure of subsidiaries [line items]
Principal operations	Architecture and consulting
Ownership (%)	100%	100%
Region	Seoul
Domestic [member] | POSCO A&C [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	45.66%	45.66%
Domestic [member] | POSCO A&C [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	54.34%	54.34%
Domestic [member] | POSCO Venture Capital Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	95%	95%
Region	Pohang
Domestic [member] | POSCO Venture Capital Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	95%	95%
Domestic [member] | eNtoB Corporation [member]
Disclosure of subsidiaries [line items]
Principal operations	Electronic commerce
Ownership (%)	69.32%	67.44%
Region	Seoul
Domestic [member] | eNtoB Corporation [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		7.50%
Domestic [member] | eNtoB Corporation [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	69.32%	59.94%
Domestic [member] | POSCO CHEMICAL CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Refractories, Anode/Cathode materials manufacturing and sales
Ownership (%)	59.76%	59.72%
Region	Pohang
Domestic [member] | POSCO CHEMICAL CO., LTD. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	59.76%	59.72%
Domestic [member] | POSCO M-TECH [member]
Disclosure of subsidiaries [line items]
Principal operations	Packing materials manufacturing and sales
Ownership (%)	48.85%	48.85%
Region	Pohang
Domestic [member] | POSCO M-TECH [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		48.85%
Domestic [member] | POSCO M-TECH [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	48.85%
Domestic [member] | POSCO FLOW Co., Ltd. (formerly, POSCO-Terminal Co., Ltd.) [member]
Disclosure of subsidiaries [line items]
Principal operations	Transporting and warehousing
Ownership (%)	100%	100%
Region	Gwangyang
Domestic [member] | POSCO FLOW Co., Ltd. (formerly, POSCO-Terminal Co., Ltd.) [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | POSCO ENERGY CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Generation of electricity
Ownership (%)	100%	100%
Region	Seoul
Domestic [member] | POSCO ENERGY CO., LTD. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | PNR [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel by product manufacturing and sales
Ownership (%)	70%	70%
Region	Pohang
Domestic [member] | PNR [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		70%
Domestic [member] | PNR [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%
Domestic [member] | Future Creation Fund Postech Early Stage account [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	40%	40%
Region	Seoul
Domestic [member] | Future Creation Fund Postech Early Stage account [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	40%	40%
Domestic [member] | POSCO WOMAN'S FUND [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	40%	40%
Region	Seoul
Domestic [member] | POSCO WOMAN'S FUND [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	40%	40%
Domestic [member] | SPH Co, ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	House manufacturing and management
Ownership (%)	100%	100%
Region	Incheon
Domestic [member] | SPH Co, ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | POSCO Group University
Disclosure of subsidiaries [line items]
Principal operations	Education service and real estate business
Ownership (%)	100%	100%
Region	Incheon
Domestic [member] | POSCO Group University | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | Growth Ladder POSCO K-Growth Global Fund [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	50%	50%
Region	Pohang
Domestic [member] | Growth Ladder POSCO K-Growth Global Fund [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50%	50%
Domestic [member] | 2015 POSCO New technology II Fund [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)		25%
Region	Pohang
Domestic [member] | 2015 POSCO New technology II Fund [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)		25%
Domestic [member] | POSCO Research & Technology [member]
Disclosure of subsidiaries [line items]
Principal operations	Intellectual Property Services and consulting
Ownership (%)	100%	100%
Region	Seoul
Domestic [member] | POSCO Research & Technology [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | TANCHEON E&E
Disclosure of subsidiaries [line items]
Principal operations	Refuse derived fuel and power generation
Ownership (%)	100%	100%
Region	Seoul
Domestic [member] | TANCHEON E&E | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | POSCO Humans [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction
Ownership (%)	100%	100%
Region	Pohang
Domestic [member] | POSCO Humans [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		75.49%
Domestic [member] | POSCO Humans [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	24.51%
Domestic [member] | Mapo Hibroad Parking Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction
Ownership (%)	71%	71%
Region	Seoul
Domestic [member] | Mapo Hibroad Parking Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	71%	71%
Domestic [member] | Busan E&E Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Refuse derived fuel and power generation
Ownership (%)	70%	70%
Region	Busan
Domestic [member] | Busan E&E Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%	70%
Domestic [member] | POSCO INTERNATIONAL Corporation
Disclosure of subsidiaries [line items]
Principal operations	Trading, energy & resource development and others
Ownership (%)	62.92%	62.94%
Region	Incheon
Domestic [member] | POSCO INTERNATIONAL Corporation | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	62.92%	62.91%
Domestic [member] | POSCO INTERNATIONAL Corporation | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)		0.03%
Domestic [member] | Pohang Scrap Recycling Distribution Center Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel processing and sales
Ownership (%)	51%	51%
Region	Pohang
Domestic [member] | Pohang Scrap Recycling Distribution Center Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	51%	51%
Domestic [member] | Songdo Development PMC (Project Management Company) LLC. [member]
Disclosure of subsidiaries [line items]
Principal operations	Housing business agency
Ownership (%)	100%	100%
Region	Incheon
Domestic [member] | Songdo Development PMC (Project Management Company) LLC. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | Korea Fuel Cell [Member]
Disclosure of subsidiaries [line items]
Principal operations	Fuel cell
Ownership (%)	100%	100%
Region	Pohang
Domestic [member] | Korea Fuel Cell [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | POSCO GEM fund no1 [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	100%	100%
Region	Pohang
Domestic [member] | POSCO GEM fund no1 [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	98.81%	98.81%
Domestic [member] | POSCO GEM fund no1 [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	1.19%	1.19%
Domestic [member] | POSCO MOBILITY SOLUTION [member]
Disclosure of subsidiaries [line items]
Principal operations	STC, TMC, Plate manufacturing and sales
Ownership (%)	100%	100%
Region	Cheonan
Domestic [member] | POSCO MOBILITY SOLUTION [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Domestic [member] | P&O Chemical Co., Ltd.
Disclosure of subsidiaries [line items]
Principal operations	Chemical production
Ownership (%)	51%	51%
Region	Gwangyang
Domestic [member] | P&O Chemical Co., Ltd. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	51%	51%
Domestic [member] | Posco New Growth [Member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	99.85%	100%
Region	Seoul
Domestic [member] | Posco New Growth [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	99.67%	99.66%
Domestic [member] | Posco New Growth [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	0.18%	0.34%
Domestic [member] | IMP Fund I [Member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	98.04%	98.04%
Region	Pohang
Domestic [member] | IMP Fund I [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	98.04%	98.04%
Domestic [member] | POSCO-Pilbara LITHIUM SOLUTION CO., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Lithium manufacturing and sales
Ownership (%)	82%	100%
Region	Gwangyang
Domestic [member] | POSCO-Pilbara LITHIUM SOLUTION CO., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	82%	100%
Domestic [member] | POSCO-HY Clean Metal Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Non-ferrous metal smelting
Ownership (%)	65%	65%
Region	Gwangyang
Domestic [member] | POSCO-HY Clean Metal Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		65%
Domestic [member] | POSCO-HY Clean Metal Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	65%
Domestic [member] | POSCO silicon solution co., ltd (formerly, TERA TECHNOS CO., Ltd.)
Disclosure of subsidiaries [line items]
Principal operations	Other enginerring R&D industries
Ownership (%)	100%
Region	Sejong
Domestic [member] | POSCO silicon solution co., ltd (formerly, TERA TECHNOS CO., Ltd.) | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Domestic [member] | POSCO Lithium Solution CO., Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Lithium manufacturing and sales
Ownership (%)	100%
Region	Gwangyang
Domestic [member] | POSCO Lithium Solution CO., Ltd. [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Domestic [member] | Consus Pf private Real Estate Fund [Member]
Disclosure of subsidiaries [line items]
Principal operations	REITs
Ownership (%)	66.67%	66.67%
Domestic [member] | Consus Pf private Real Estate Fund [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	66.67%	66.67%
Domestic [member] | New Energy Hub [Member]
Disclosure of subsidiaries [line items]
Principal operations	Electricity and gas supply
Ownership (%)	100%	100%
Region	Gwangyang
Domestic [member] | New Energy Hub [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50%	87.44%
Domestic [member] | New Energy Hub [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50%	12.56%
Domestic [member] | Posco Busan New deal Fund [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	32%	32%
Region	Pohang
Domestic [member] | Posco Busan New deal Fund [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	32%	32%
Domestic [member] | Shinan Green Energy Co., LTD [Member]
Disclosure of subsidiaries [line items]
Principal operations	Electricity production
Ownership (%)	54.53%	54.53%
Region	Shinahn
Domestic [member] | Shinan Green Energy Co., LTD [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	54.53%	54.53%
Domestic [member] | eSteel4U [Member]
Disclosure of subsidiaries [line items]
Principal operations	Wholesales and retail
Ownership (%)	61.12%
Region	Seoul
Domestic [member] | eSteel4U [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	61.12%
Domestic [member] | POSCO social investment fund
Disclosure of subsidiaries [line items]
Principal operations	Investment in venture companies
Ownership (%)	70%
Region	Pohang
Domestic [member] | POSCO social investment fund | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	20%
Domestic [member] | POSCO social investment fund | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50%
Domestic [member] | POSCO GS eco materials co., ltd
Disclosure of subsidiaries [line items]
Principal operations	Rechargeable battery
Ownership (%)	100%
Region	Seoul
Domestic [member] | POSCO GS eco materials co., ltd | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Domestic [member] | Consus Pf Private Real Estate Fund No.2 [Member]
Disclosure of subsidiaries [line items]
Principal operations	Real estate development
Ownership (%)	66.67%
Domestic [member] | Consus Pf Private Real Estate Fund No.2 [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	66.67%
Foreign [member] | POSCO America Corporation [member]
Disclosure of subsidiaries [line items]
Principal operations	Research&Consulting
Ownership (%)	100%	100%
Region	USA
Foreign [member] | POSCO America Corporation [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	99.45%	99.45%
Foreign [member] | POSCO America Corporation [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	0.55%	0.55%
Foreign [member] | POSCO AUSTRALIA PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Raw material sales & mine development
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POSCO AUSTRALIA PTY LTD [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO Canada Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Coal sales
Ownership (%)	100%	100%
Region	Canada
Foreign [member] | POSCO Canada Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCAN ELKVIEW COAL LTD.
Disclosure of subsidiaries [line items]
Principal operations	Coal sales
Ownership (%)		100%
Region	Canada
Foreign [member] | POSCAN ELKVIEW COAL LTD. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO Asia Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Finance
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO Asia Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-CTPC Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO-CTPC Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO E&C Vietnam Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel structure manufacturing and sales
Ownership (%)	100%	100%
Region	Vietnam
Foreign [member] | POSCO E&C Vietnam Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO (Zhangjiagang) Stainless Steel Co.,Ltd.
Disclosure of subsidiaries [line items]
Principal operations	Stainless steel manufacturing and sales
Ownership (%)	82.48%	82.48%
Region	China
Foreign [member] | POSCO (Zhangjiagang) Stainless Steel Co.,Ltd. | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	58.60%	58.60%
Foreign [member] | POSCO (Zhangjiagang) Stainless Steel Co.,Ltd. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	23.88%	23.88%
Foreign [member] | POSCO (Thailand) Company Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	Thailand
Foreign [member] | POSCO (Thailand) Company Limited [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO (Thailand) Company Limited [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | POSCO-MKPC SDN BHD [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	70%	70%
Region	Malaysia
Foreign [member] | POSCO-MKPC SDN BHD [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		70%
Foreign [member] | POSCO-MKPC SDN BHD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%
Foreign [member] | Qingdao Pohang Stainless Steel Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Stainless steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | Qingdao Pohang Stainless Steel Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%	70%
Foreign [member] | Qingdao Pohang Stainless Steel Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	30%	30%
Foreign [member] | POSCO(Suzhou) Automotive Processing Center Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO(Suzhou) Automotive Processing Center Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	90%	90%
Foreign [member] | POSCO(Suzhou) Automotive Processing Center Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	10%	10%
Foreign [member] | POSCO-China Qingdao Processing Center Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO-China Qingdao Processing Center Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POS-ORE PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Iron ore development and sales
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POS-ORE PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-China Holding Corp. [member]
Disclosure of subsidiaries [line items]
Principal operations	Holding company
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO-China Holding Corp. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO JAPAN Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel Marketing, demand development and technology research
Ownership (%)	100%	100%
Region	Japan
Foreign [member] | POSCO JAPAN Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POS-CD PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Coal sales
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POS-CD PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POS-GC PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Coal sales
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POS-GC PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-India Private Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	India
Foreign [member] | POSCO-India Private Limited [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO-India Private Limited [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | POSCO-India Pune Processing Center. Pvt. Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	65%	65%
Region	India
Foreign [member] | POSCO-India Pune Processing Center. Pvt. Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	65%	65%
Foreign [member] | POSCO Japan PC CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	86.12%	86.12%
Region	Japan
Foreign [member] | POSCO Japan PC CO., LTD. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	86.12%	86.12%
Foreign [member] | POSCO-CFPC Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO-CFPC Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	44.66%	39.60%
Foreign [member] | POSCO-CFPC Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	55.34%	60.40%
Foreign [member] | POSCO E&C CHINA Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Civil engineering and construction
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO E&C CHINA Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO MPPC S.A. de C.V. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	96.31%	96.31%
Region	Mexico
Foreign [member] | POSCO MPPC S.A. de C.V. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	21.02%	21.02%
Foreign [member] | POSCO MPPC S.A. de C.V. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	75.29%	75.29%
Foreign [member] | Zhangjigang Pohang Port Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Loading and unloading service
Ownership (%)	100%	100%
Region	China
Foreign [member] | Zhangjigang Pohang Port Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-VIETNAM Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	Vietnam
Foreign [member] | POSCO-VIETNAM Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	0%	100%
Foreign [member] | POSCO-VIETNAM Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | POSCO MEXICO S.A. DE C.V. [member]
Disclosure of subsidiaries [line items]
Principal operations	Automotive steel sheet manufacturing and sales
Ownership (%)	98.16%	98.16%
Region	Mexico
Foreign [member] | POSCO MEXICO S.A. DE C.V. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	83.28%	83.28%
Foreign [member] | POSCO MEXICO S.A. DE C.V. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	14.88%	14.88%
Foreign [member] | POSCO-Poland Wroclaw Processing Center Sp. z o. o. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	60%	60%
Region	Poland
Foreign [member] | POSCO-Poland Wroclaw Processing Center Sp. z o. o. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	60%	60%
Foreign [member] | POS-NP PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Coal sales
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POS-NP PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO ENGINEERING AND CONSTRUCTION AUSTRALIA (POSCO E&C AUSTRALIA) PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction and engineering service
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POSCO ENGINEERING AND CONSTRUCTION AUSTRALIA (POSCO E&C AUSTRALIA) PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO-TISCO (JILIN) PROCESSING CENTER Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	60%	60%
Region	China
Foreign [member] | POSCO-TISCO (JILIN) PROCESSING CENTER Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50%	50%
Foreign [member] | POSCO-TISCO (JILIN) PROCESSING CENTER Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	10%	10%
Foreign [member] | POSCO Thainox Public Company Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	STS cold-rolled steel manufacturing and sales
Ownership (%)	74.56%	74.56%
Region	Thailand
Foreign [member] | POSCO Thainox Public Company Limited [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		74.56%
Foreign [member] | POSCO Thainox Public Company Limited [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	74.56%
Foreign [member] | HUNCHUN POSCO HMM INTERNATIONAL LOGISTICS CO., LTD.
Disclosure of subsidiaries [line items]
Principal operations	Logistics
Ownership (%)	81.55%	81.55%
Region	China
Foreign [member] | HUNCHUN POSCO HMM INTERNATIONAL LOGISTICS CO., LTD. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	81.55%	81.55%
Foreign [member] | POSCO INTERNATIONAL VIETNAM CO.,LTD.
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Vietnam
Foreign [member] | POSCO INTERNATIONAL VIETNAM CO.,LTD. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO(Chongqing) Automotive Processing Center Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO(Chongqing) Automotive Processing Center Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		90%
Foreign [member] | POSCO(Chongqing) Automotive Processing Center Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	10%
Foreign [member] | SUZHOU POSCO-CORE TECHNOLOGY CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Component manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | SUZHOU POSCO-CORE TECHNOLOGY CO., LTD. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		33.91%
Foreign [member] | SUZHOU POSCO-CORE TECHNOLOGY CO., LTD. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	66.09%
Foreign [member] | PT.Krakatau Posco Chemical Calcination [member]
Disclosure of subsidiaries [line items]
Principal operations	Quicklime manufacturing and sales
Ownership (%)	80%	80%
Region	Indonesia
Foreign [member] | PT.Krakatau Posco Chemical Calcination [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	80%	80%
Foreign [member] | POSCO AFRICA (PROPRIETARY) LIMITED [member]
Disclosure of subsidiaries [line items]
Principal operations	Mine development
Ownership (%)	100%	100%
Region	South Africa
Foreign [member] | POSCO AFRICA (PROPRIETARY) LIMITED [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO ICT BRASIL [member]
Disclosure of subsidiaries [line items]
Principal operations	IT service and engineering
Ownership (%)	100%	100%
Region	Brazil
Foreign [member] | POSCO ICT BRASIL [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO Center Beijing [member]
Disclosure of subsidiaries [line items]
Principal operations	Real estate development, rental and management
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO Center Beijing [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-Malaysia SDN. BHD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	95.42%	95.42%
Region	Malaysia
Foreign [member] | POSCO-Malaysia SDN. BHD. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		81.79%
Foreign [member] | POSCO-Malaysia SDN. BHD. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	95.42%	13.63%
Foreign [member] | PT KRAKATAU BLUE WATER [member]
Disclosure of subsidiaries [line items]
Principal operations	Wastewater treamtment facilities operation and maintenance
Ownership (%)	67%	67%
Region	Indonesia
Foreign [member] | PT KRAKATAU BLUE WATER [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	67%	67%
Foreign [member] | POSCO INTERNATIONAL MYANMAR CO.,LTD.
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Myanmar
Foreign [member] | POSCO INTERNATIONAL MYANMAR CO.,LTD. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-Italy Processing Center [member]
Disclosure of subsidiaries [line items]
Principal operations	Stainless steel sheet manufacturing and sales
Ownership (%)	100%	100%
Region	Italy
Foreign [member] | POSCO-Italy Processing Center [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	88.89%	88.89%
Foreign [member] | POSCO-Italy Processing Center [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	11.11%	11.11%
Foreign [member] | Myanmar POSCO C&C Company, Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	70%	70%
Region	Myanmar
Foreign [member] | Myanmar POSCO C&C Company, Limited [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%	70%
Foreign [member] | POSCO ICT VIETNAM [member]
Disclosure of subsidiaries [line items]
Principal operations	IT service and electric control engineering
Ownership (%)	100%	100%
Region	Vietnam
Foreign [member] | POSCO ICT VIETNAM [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE.LTD.
Disclosure of subsidiaries [line items]
Principal operations	Real estate development
Ownership (%)	75%	75%
Region	Singapore
Foreign [member] | POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE.LTD. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	75%	75%
Foreign [member] | Myanmar POSCO Engineering & Construction Company, Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction and engineering service
Ownership (%)	100%	100%
Region	Myanmar
Foreign [member] | Myanmar POSCO Engineering & Construction Company, Limited [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POS-Minerals Corporation [member]
Disclosure of subsidiaries [line items]
Principal operations	Mine development management and sales
Ownership (%)	100%	100%
Region	USA
Foreign [member] | POS-Minerals Corporation [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO(Wuhu) Automotive Processing Center Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO(Wuhu) Automotive Processing Center Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	68.57%	68.57%
Foreign [member] | POSCO(Wuhu) Automotive Processing Center Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	31.43%	31.43%
Foreign [member] | POSCO Engineering and Construction India Private Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	Civil engineering and construction
Ownership (%)	100%	100%
Region	India
Foreign [member] | POSCO Engineering and Construction India Private Limited [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO COATED STEEL (THAILAND) CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Vehicle steel manufacturing and sales
Ownership (%)	100%	100%
Region	Thailand
Foreign [member] | POSCO COATED STEEL (THAILAND) CO., LTD. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO COATED STEEL (THAILAND) CO., LTD. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | POSCO INTERNATIONAL AMARA Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Real estate development
Ownership (%)	85%	85%
Region	Myanmar
Foreign [member] | POSCO INTERNATIONAL AMARA Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	85%	85%
Foreign [member] | POSMATE-CHINA CO., LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Business facility maintenance
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSMATE-CHINA CO., LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-Mexico Villagran Wire-rod Processing Center
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	66.75%	66.75%
Region	Mexico
Foreign [member] | POSCO-Mexico Villagran Wire-rod Processing Center | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	56.75%	56.75%
Foreign [member] | POSCO-Mexico Villagran Wire-rod Processing Center | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	10%	10%
Foreign [member] | POSCO ChengDu Processing Center [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	43%	43%
Region	China
Foreign [member] | POSCO ChengDu Processing Center [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		33%
Foreign [member] | POSCO ChengDu Processing Center [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	43%	10%
Foreign [member] | POSCO E&C SMART S DE RL DE CV [member]
Disclosure of subsidiaries [line items]
Principal operations	Civil engineering and construction
Ownership (%)	100%	100%
Region	Mexico
Foreign [member] | POSCO E&C SMART S DE RL DE CV [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO Philippine Manila Processing Center, Inc. [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	Philippines
Foreign [member] | POSCO Philippine Manila Processing Center, Inc. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO Philippine Manila Processing Center, Inc. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | POSCO E&C HOLDINGS CO., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Holding company
Ownership (%)	100%	100%
Region	Thailand
Foreign [member] | POSCO E&C HOLDINGS CO., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PT.Krakatau Posco Social Enterprise [member]
Disclosure of subsidiaries [line items]
Principal operations	Social enterprise
Ownership (%)	100%	100%
Region	Indonesia
Foreign [member] | PT.Krakatau Posco Social Enterprise [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Ventanas Philippines Construction Inc [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction
Ownership (%)	100%	100%
Region	Philippines
Foreign [member] | Ventanas Philippines Construction Inc [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | SANPU TRADING Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Raw material trading
Ownership (%)	70.04%	70.04%
Region	China
Foreign [member] | SANPU TRADING Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70.04%	70.04%
Foreign [member] | Zhangjiagang BLZ Pohang International Trading [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel Intermediate trade
Ownership (%)	100%	100%
Region	China
Foreign [member] | Zhangjiagang BLZ Pohang International Trading [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO RU Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Principal operations	Trade and business development
Ownership (%)	100%	100%
Region	Russia
Foreign [member] | POSCO RU Limited Liability Company [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO Europe Steel Distribution Center [member]
Disclosure of subsidiaries [line items]
Principal operations	Logistics & Steel sales
Ownership (%)	70%	70%
Region	Slovenia
Foreign [member] | POSCO Europe Steel Distribution Center [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		50%
Foreign [member] | POSCO Europe Steel Distribution Center [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%	20%
Foreign [member] | POSCO ENGINEERING (THAILAND) CO., LTD. [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction and engineering service
Ownership (%)	100%	100%
Region	Thailand
Foreign [member] | POSCO ENGINEERING (THAILAND) CO., LTD. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO VST Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Stainless steel sheet manufacturing and sales
Ownership (%)	95.65%	95.65%
Region	Vietnam
Foreign [member] | POSCO VST Co., Ltd. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	95.65%	95.65%
Foreign [member] | POSCO Maharashtra Steel Private Limited [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	India
Foreign [member] | POSCO Maharashtra Steel Private Limited [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INDIA HOLDINGS PRIVATE LIMITED [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	95.32%	95.32%
Region	India
Foreign [member] | POSCO INDIA HOLDINGS PRIVATE LIMITED [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	93.34%	93.34%
Foreign [member] | POSCO INDIA HOLDINGS PRIVATE LIMITED [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	1.98%	1.98%
Foreign [member] | POSCO TNPC Otomotiv Celik San. Ve Tic. A.S [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	Turkey
Foreign [member] | POSCO TNPC Otomotiv Celik San. Ve Tic. A.S [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | POSCO TNPC Otomotiv Celik San. Ve Tic. A.S [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | Pos-Sea Pte Ltd [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel Intermediate trade
Ownership (%)	100%	100%
Region	Singapore
Foreign [member] | Pos-Sea Pte Ltd [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO-Indonesia Jakarta Processing Center [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	92.20%	92.20%
Region	Indonesia
Foreign [member] | POSCO-Indonesia Jakarta Processing Center [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70.51%	70.51%
Foreign [member] | POSCO-Indonesia Jakarta Processing Center [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	21.69%	21.69%
Foreign [member] | PT.MRI [member]
Disclosure of subsidiaries [line items]
Principal operations	Mine development
Ownership (%)	65%	65%
Region	Indonesia
Foreign [member] | PT.MRI [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	65%	65%
Foreign [member] | POSCO TMC INDIA PRIVATE LIMITED [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	India
Foreign [member] | POSCO TMC INDIA PRIVATE LIMITED [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PT.POSCO ICT INDONESIA [member]
Disclosure of subsidiaries [line items]
Principal operations	IT service and electric control engineering
Ownership (%)	66.99%	66.99%
Region	Indonesia
Foreign [member] | PT.POSCO ICT INDONESIA [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	66.99%	66.99%
Foreign [member] | POSCO NCR Coal Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Coal sales
Ownership (%)	100%	100%
Region	Canada
Foreign [member] | POSCO NCR Coal Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO WA PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Iron ore sales & mine development
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POSCO WA PTY LTD [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO AUSTRALIA GP PTY LIMITED [member]
Disclosure of subsidiaries [line items]
Principal operations	Resource development
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POSCO AUSTRALIA GP PTY LIMITED [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PT. Krakatau Posco Energy [member]
Disclosure of subsidiaries [line items]
Principal operations	Electricity production construction and operation
Ownership (%)	90%	90%
Region	Indonesia
Foreign [member] | PT. Krakatau Posco Energy [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	90%	90%
Foreign [member] | POSCO INTERNATIONAL SINGAPORE PTE. LTD.
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Singapore
Foreign [member] | POSCO INTERNATIONAL SINGAPORE PTE. LTD. | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO MAURITIUS LIMITED [member]
Disclosure of subsidiaries [line items]
Principal operations	Coal development and sales
Ownership (%)	100%	100%
Region	Mauritius
Foreign [member] | POSCO MAURITIUS LIMITED [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PGSF, L.P. [member]
Disclosure of subsidiaries [line items]
Principal operations	Investment in bio tech Industry
Ownership (%)	100%	100%
Region	USA
Foreign [member] | PGSF, L.P. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO(Dalian) IT Center Development Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Principal operations	Real estate development and investment
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO(Dalian) IT Center Development Co., Ltd. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PT. POSCO E&C INDONESIA [member]
Disclosure of subsidiaries [line items]
Principal operations	Civil engineering and construction
Ownership (%)	100%	100%
Region	Indonesia
Foreign [member] | PT. POSCO E&C INDONESIA [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | HUME COAL PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Raw material manufacturing
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | HUME COAL PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Brazil Sao Paulo Steel Processing Center [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	76%	76%
Region	Brazil
Foreign [member] | Brazil Sao Paulo Steel Processing Center [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	76%	76%
Foreign [member] | POSCO ENGINEERING & CONSTRUCTION DO BRAZIL LTDA. [member]
Disclosure of subsidiaries [line items]
Principal operations	Construction
Ownership (%)	100%	100%
Region	Brazil
Foreign [member] | POSCO ENGINEERING & CONSTRUCTION DO BRAZIL LTDA. [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO ASSAN TST STEEL INDUSTRY [member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	70%	70%
Region	Turkey
Foreign [member] | POSCO ASSAN TST STEEL INDUSTRY [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	60%	60%
Foreign [member] | POSCO ASSAN TST STEEL INDUSTRY [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	10%	10%
Foreign [member] | POS-LT PTY LTD [member]
Disclosure of subsidiaries [line items]
Principal operations	Lithium mining investment
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POS-LT PTY LTD [member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO Argentina S.A.U. [member]
Disclosure of subsidiaries [line items]
Principal operations	Mineral exploration/manufacturing/sales
Ownership (%)	100%	100%
Region	Argentina
Foreign [member] | POSCO Argentina S.A.U. [member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL POWER (PNGLAE) LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Electricity production
Ownership (%)	100%	100%
Region	Papua New Guinea
Foreign [member] | POSCO INTERNATIONAL POWER (PNGLAE) LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | GOLDEN LACE POSCO INTERNATIONAL CO., LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Rice processing
Ownership (%)	60%	60%
Region	Myanmar
Foreign [member] | GOLDEN LACE POSCO INTERNATIONAL CO., LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	60%	60%
Foreign [member] | POSCO INTERNATIONAL Deutschland GMBH [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Germany
Foreign [member] | POSCO INTERNATIONAL Deutschland GMBH [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL JAPAN CORP [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Japan
Foreign [member] | POSCO INTERNATIONAL JAPAN CORP [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL (CHINA) CO., LTD
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO INTERNATIONAL (CHINA) CO., LTD | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | JB CLARK HILLS1 [Member]
Disclosure of subsidiaries [line items]
Principal operations	Apartment construction
Ownership (%)	70%	70%
Region	Philippines
Foreign [member] | JB CLARK HILLS1 [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	70%	70%
Foreign [member] | POSCO INTERNATIONAL MALAYSIA SDN BHD [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Malaysia
Foreign [member] | POSCO INTERNATIONAL MALAYSIA SDN BHD [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO YAMATO VINA STEEL JOINT STOCK COMPANY (Formerly, POSCO SS VINA JOINT STOCK COMPANY) | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	51%
Foreign [member] | PT POSCO INTERNATIONAL INDONESIA [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trade
Ownership (%)	100%	100%
Region	Indonesia
Foreign [member] | PT POSCO INTERNATIONAL INDONESIA [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO CHEMICAL Free Zone Enterprise [Member]
Disclosure of subsidiaries [line items]
Principal operations	Refractory Construction
Ownership (%)		100%
Region	Nigeria
Foreign [member] | POSCO CHEMICAL Free Zone Enterprise [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)		100%
Foreign [member] | DAEWOO INTERNATIONAL SHANGHAI WAIGAOQIAO CO., LTD [Member]
Disclosure of subsidiaries [line items]
Principal operations	Intermediary trade & bonded warehouse operation
Ownership (%)	100%	100%
Region	China
Foreign [member] | DAEWOO INTERNATIONAL SHANGHAI WAIGAOQIAO CO., LTD [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO ICTChina CO.,LTD [Member]
Disclosure of subsidiaries [line items]
Principal operations	IT service and DVR business
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO ICTChina CO.,LTD [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL UKRAINE, LLC. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Grain sales
Ownership (%)	100%	100%
Region	Ukraine
Foreign [member] | POSCO INTERNATIONAL UKRAINE, LLC. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Zhangjiagang Pohang Refractories Co., Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Refractory materials sales & furnacemaintenance
Ownership (%)	51%	51%
Region	China
Foreign [member] | Zhangjiagang Pohang Refractories Co., Ltd. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	51%	51%
Foreign [member] | POSCO Vietnam Processing Center. Co.,Ltd [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	Vietnam
Foreign [member] | POSCO Vietnam Processing Center. Co.,Ltd [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	94.05%	94.05%
Foreign [member] | POSCO Vietnam Processing Center. Co.,Ltd [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	5.95%	5.95%
Foreign [member] | POSCO (Liaoning) Automotive Processing Center Co., Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO (Liaoning) Automotive Processing Center Co., Ltd. [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	90%	90%
Foreign [member] | POSCO (Liaoning) Automotive Processing Center Co., Ltd. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	10%	10%
Foreign [member] | POSCO AMERICA ALABAMA PROCESSING CENTER CO., LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	97.80%	97.80%
Region	USA
Foreign [member] | POSCO AMERICA ALABAMA PROCESSING CENTER CO., LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	97.80%	97.80%
Foreign [member] | POSCO (Yantai) Automotive Processing Center Co., Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO (Yantai) Automotive Processing Center Co., Ltd. [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	90%	90%
Foreign [member] | POSCO (Yantai) Automotive Processing Center Co., Ltd. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	10%	10%
Foreign [member] | POSCO India Steel Distribution Center Private Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel logistics
Ownership (%)	100%	100%
Region	India
Foreign [member] | POSCO India Steel Distribution Center Private Ltd. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO YAMATO VINA STEEL JOINT STOCK COMPANY (formerly, POSCO SS VINA JOINT STOCK COMPANY) [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	51%	51%
Region	Vietnam
Foreign [member] | POSCO YAMATO VINA STEEL JOINT STOCK COMPANY (formerly, POSCO SS VINA JOINT STOCK COMPANY) [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		51%
Foreign [member] | POSCO INTERNATIONAL AMERICA CORP. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	USA
Foreign [member] | POSCO INTERNATIONAL AMERICA CORP. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Resource development
Ownership (%)	100%	100%
Region	Australia
Foreign [member] | POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL TEXTILE LLC. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Textile manufacturing
Ownership (%)	100%	100%
Region	Uzbekistan
Foreign [member] | POSCO INTERNATIONAL TEXTILE LLC. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PT.POSCO INDONESIA INTI [Member]
Disclosure of subsidiaries [line items]
Principal operations	Consulting
Ownership (%)	100%	100%
Region	Indonesia
Foreign [member] | PT.POSCO INDONESIA INTI [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL SHANGHAI CO., LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO INTERNATIONAL SHANGHAI CO., LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL INDIA PVT. LTD [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	India
Foreign [member] | POSCO INTERNATIONAL INDIA PVT. LTD [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | GRAIN TERMINAL HOLDING PTE. LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	75%	75%
Region	Singapore
Foreign [member] | GRAIN TERMINAL HOLDING PTE. LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	75%	75%
Foreign [member] | Mykolaiv Milling Works PJSC. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Grain trading
Ownership (%)	100%	100%
Region	Ukraine
Foreign [member] | Mykolaiv Milling Works PJSC. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Yuzhnaya Stevedoring Company Limited LLC. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Cargo handling
Ownership (%)	100%	100%
Region	Ukraine
Foreign [member] | Yuzhnaya Stevedoring Company Limited LLC. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Posco International (Thailand) Co., Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trade
Ownership (%)	100%	100%
Region	Thailand
Foreign [member] | Posco International (Thailand) Co., Ltd. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PEC POWERCON SDN. BHD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Construction and engineering service
Ownership (%)	100%	100%
Region	Malaysia
Foreign [member] | PEC POWERCON SDN. BHD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | POSCO INTERNATIONAL EP MALAYSIA SDN. BHD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Extraction of Crude petroleum and Natural gas
Ownership (%)	100%	100%
Region	Malaysia
Foreign [member] | POSCO INTERNATIONAL EP MALAYSIA SDN. BHD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | AGPA PTE. LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Holding company
Ownership (%)	100%	100%
Region	Singapore
Foreign [member] | AGPA PTE. LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Poland Legnica Sourcing Center Sp. z o.o
Disclosure of subsidiaries [line items]
Principal operations	Non-ferrous metal Smetling
Ownership (%)	100%	100%
Region	Poland
Foreign [member] | Poland Legnica Sourcing Center Sp. z o.o | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | Senex Holdings PTY LTD
Disclosure of subsidiaries [line items]
Principal operations	Extraction of Crude petroleum and Natural gas
Ownership (%)	50.10%
Region	Australia
Foreign [member] | Senex Holdings PTY LTD | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50.10%
Foreign [member] | Posco International Mexico e-Mobility S.A DE C.V
Disclosure of subsidiaries [line items]
Principal operations	Electric Vehicle Parts Manufacturing
Ownership (%)	100%
Region	Mexico
Foreign [member] | Posco International Mexico e-Mobility S.A DE C.V | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | POSCO CHEMICAL CANADA INC
Disclosure of subsidiaries [line items]
Principal operations	Holding company
Ownership (%)	100%
Region	Canada
Foreign [member] | POSCO CHEMICAL CANADA INC | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | ULTIUM CAM GP INC
Disclosure of subsidiaries [line items]
Principal operations	Holding company
Ownership (%)	85%
Region	Canada
Foreign [member] | ULTIUM CAM GP INC | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	85%
Foreign [member] | ULTIUM CAM LIMITED PARTNERSHIP
Disclosure of subsidiaries [line items]
Principal operations	Anode material manufacturing
Ownership (%)	85%
Region	Canada
Foreign [member] | ULTIUM CAM LIMITED PARTNERSHIP | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	85%
Foreign [member] | POSCO(Wuhan) automotive processing center Co.,Ltd
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%
Region	China
Foreign [member] | POSCO(Wuhan) automotive processing center Co.,Ltd | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	68.57%
Foreign [member] | POSCO(Wuhan) automotive processing center Co.,Ltd | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	31.43%
Foreign [member] | POSCO BRAZIL LTDA
Disclosure of subsidiaries [line items]
Principal operations	Office Administration, Management Consulting
Ownership (%)	100%
Region	Brazil
Foreign [member] | POSCO BRAZIL LTDA | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%
Foreign [member] | PT. Bio Inti Agrindo [Member]
Disclosure of subsidiaries [line items]
Principal operations	Forest resources development
Ownership (%)	85%	85%
Region	Indonesia
Foreign [member] | PT. Bio Inti Agrindo [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	85%	85%
Foreign [member] | POSCO(Suzhou) Steel Processing Center CO., LTD. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	100%	100%
Region	China
Foreign [member] | POSCO(Suzhou) Steel Processing Center CO., LTD. [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)		30%
Foreign [member] | POSCO(Suzhou) Steel Processing Center CO., LTD. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	70%
Foreign [member] | POSCO INTERNATIONAL ITALIA S.R.L. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Italy
Foreign [member] | POSCO INTERNATIONAL ITALIA S.R.L. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | PT. KRAKATAU POSCO [Member]
Disclosure of subsidiaries [line items]
Principal operations	Steel manufacturing and sales
Ownership (%)	50%	70%
Region	Indonesia
Foreign [member] | PT. KRAKATAU POSCO [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	50%	70%
Foreign [member] | POSCO INTERNATIONAL MEXICO, S.A de C.V.. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Trading business
Ownership (%)	100%	100%
Region	Mexico
Foreign [member] | POSCO INTERNATIONAL MEXICO, S.A de C.V.. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | HONG KONG POSCO EC (CHINA) INVESTMENT Co., Ltd. [Member]
Disclosure of subsidiaries [line items]
Principal operations	Real estate development and investment
Ownership (%)	100%	100%
Region	Hongkong
Foreign [member] | HONG KONG POSCO EC (CHINA) INVESTMENT Co., Ltd. [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	100%	100%
Foreign [member] | ZHEJIANG POSCOHUAYOU ESM CO., LTD [Member]
Disclosure of subsidiaries [line items]
Principal operations	Anode material manufacturing
Ownership (%)	60%	60%
Region	China
Foreign [member] | ZHEJIANG POSCOHUAYOU ESM CO., LTD [Member] | POSCO HOLDINGS INC. [member]
Disclosure of subsidiaries [line items]
Ownership (%)	18.70%	60%
Foreign [member] | ZHEJIANG POSCOHUAYOU ESM CO., LTD [Member] | Subsidiaries [member]
Disclosure of subsidiaries [line items]
Ownership (%)	41.30%

General Information - Details_2

General Information - Details of Consolidated Subsidiaries (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2022 Subsidiaries
Senex Holdings PTY LTD
Disclosure of subsidiaries [line items]
Number of subsidiaries	19

General Information - Details_3

General Information - Details of Non-controlling Interest (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of subsidiaries [line items]
Current assets	₩ 48,243,041	₩ 47,419,860
Non-current assets	50,778,709	44,879,030
Current liabilities	(23,434,705)	(21,271,371)
Non-current liabilities	(17,395,148)	(16,313,553)
Equity	58,191,897	54,713,966	₩ 47,603,523	₩ 47,763,298
Non-controlling interests	5,714,367	4,334,646
Sales	85,003,616	76,009,201	57,466,678
Profit (loss) for the period	3,585,957	7,175,982	1,748,492
Profit (loss) attributable to non-controlling interests	428,421	569,254	167,284
Cash flows from operating activities	6,186,765	6,259,365	8,685,737
Cash flows from investing activities	(4,219,871)	(5,583,507)	(6,259,265)
Effect of exchange rate fluctuation on cash held	(8,740)	112,950	(95,272)
Net increase (decrease) in cash and cash equivalents	3,277,562	20,142	1,240,332
POSCO INTERNATIONAL Corporation [member]
Disclosure of subsidiaries [line items]
Current assets	5,289,899	5,952,771	3,992,996
Non-current assets	3,470,861	3,322,590	3,410,528
Current liabilities	(3,809,495)	(4,537,785)	(2,649,187)
Non-current liabilities	(2,203,923)	(1,666,455)	(1,816,160)
Equity	2,747,342	3,071,121	2,938,177
Non-controlling interests	1,018,764	1,138,360	1,089,082
Sales	32,532,465	30,545,740	19,230,652
Profit (loss) for the period	323,749	223,845	173,155
Profit (loss) attributable to non-controlling interests	120,052	82,972	64,183
Cash flows from operating activities	480,927	(235,359)	324,822
Cash flows from investing activities	(389,092)	(91,619)	(38,535)
Cash flows from financing activities (before dividends to non-controlling interest)	136,954	279,529	(99,765)
Dividend to non-controlling interest	(36,585)	(32,004)	(32,004)
Effect of exchange rate fluctuation on cash held	853	1,937	(2,425)
Net increase (decrease) in cash and cash equivalents	193,057	(77,516)	152,093
PT. KRAKATAU POSCO [member]
Disclosure of subsidiaries [line items]
Current assets	1,125,123	968,129	503,633
Non-current assets	3,062,378	2,388,139	2,366,359
Current liabilities	(2,486,616)	(1,155,003)	(1,722,805)
Non-current liabilities	(834,456)	(1,778,668)	(1,235,948)
Equity	866,429	422,597	(88,761)
Non-controlling interests	433,214	126,779	(26,628)
Sales	3,006,300	2,694,601	1,691,310
Profit (loss) for the period	140,967	500,801	(179,403)
Profit (loss) attributable to non-controlling interests	70,483	150,240	(53,821)
Cash flows from operating activities	342,484	151,393	62,276
Cash flows from investing activities	(372,345)	(4,022)	212
Cash flows from financing activities (before dividends to non-controlling interest)	(115,046)	(81,187)	(45,207)
Effect of exchange rate fluctuation on cash held	12,690	3,916	(1,421)
Net increase (decrease) in cash and cash equivalents	(132,217)	70,100	15,860
POSCO CHEMICAL CO., LTD [member]
Disclosure of subsidiaries [line items]
Current assets	1,832,804	2,071,307	774,817
Non-current assets	2,261,649	1,708,558	1,229,349
Current liabilities	(920,656)	(604,333)	(203,443)
Non-current liabilities	(938,447)	(835,222)	(833,857)
Equity	2,235,350	2,340,310	966,866
Non-controlling interests	899,416	942,660	374,582
Sales	3,041,287	1,939,524	1,524,146
Profit (loss) for the period	114,365	128,960	29,720
Profit (loss) attributable to non-controlling interests	46,016	51,944	11,514
Cash flows from operating activities	(27,009)	36,745	11,021
Cash flows from investing activities	(26,492)	(639,965)	(162,861)
Cash flows from financing activities (before dividends to non-controlling interest)	107,266	595,521	122,736
Dividend to non-controlling interest	(9,360)	(7,370)	(9,451)
Effect of exchange rate fluctuation on cash held	(2,469)	6	(398)
Net increase (decrease) in cash and cash equivalents	41,936	(15,063)	(38,953)
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member]
Disclosure of subsidiaries [line items]
Current assets	5,326,049	5,221,691	4,614,481
Non-current assets	2,033,432	1,929,362	1,823,229
Current liabilities	(3,372,310)	(3,100,971)	(2,933,668)
Non-current liabilities	(1,076,909)	(1,306,648)	(978,672)
Equity	2,910,262	2,743,434	2,525,370
Non-controlling interests	1,373,670	1,294,925	1,191,998
Sales	8,376,559	6,693,933	6,943,725
Profit (loss) for the period	174,061	266,821	315,139
Profit (loss) attributable to non-controlling interests	82,158	125,942	148,748
Cash flows from operating activities	(54,506)	113,021	451,803
Cash flows from investing activities	160,750	(243,463)	(398,937)
Cash flows from financing activities (before dividends to non-controlling interest)	154,946	36,359	9,475
Dividend to non-controlling interest	(14,800)	(9,867)	(9,867)
Effect of exchange rate fluctuation on cash held	(450)	3,048	(2,220)
Net increase (decrease) in cash and cash equivalents	245,940	(100,902)	50,254
POSCO ICT [member]
Disclosure of subsidiaries [line items]
Current assets	585,766	423,422	465,158
Non-current assets	226,598	185,508	187,415
Current liabilities	(419,452)	(263,794)	(278,335)
Non-current liabilities	(4,431)	(10,051)	(24,132)
Equity	388,481	335,085	350,106
Non-controlling interests	134,484	116,000	121,200
Sales	1,101,037	832,127	935,958
Profit (loss) for the period	42,832	(18,802)	8,961
Profit (loss) attributable to non-controlling interests	14,828	(6,509)	3,102
Cash flows from operating activities	(594)	(18,494)	21,403
Cash flows from investing activities	3,973	(17,309)	(4,841)
Cash flows from financing activities (before dividends to non-controlling interest)	(561)	(226)	(302)
Dividend to non-controlling interest	(2,628)	(2,628)	(2,628)
Effect of exchange rate fluctuation on cash held	(35)	3	(74)
Net increase (decrease) in cash and cash equivalents	155	(38,654)	13,558
Others [member]
Disclosure of subsidiaries [line items]
Current assets	10,305,149	9,496,214	7,207,141
Non-current assets	7,264,540	4,772,409	4,789,484
Current liabilities	(8,680,121)	(7,918,852)	(6,354,111)
Non-current liabilities	(2,094,774)	(1,706,779)	(1,727,139)
Equity	6,794,794	4,642,992	3,915,375
Non-controlling interests	2,480,625	1,542,960	1,330,280
Sales	34,933,760	28,538,963	21,059,978
Profit (loss) for the period	269,926	690,197	(44,660)
Profit (loss) attributable to non-controlling interests	106,091	189,590	(19,899)
Cash flows from operating activities	68,906	130,828	123,108
Cash flows from investing activities	(619,072)	(86,585)	(93,565)
Cash flows from financing activities (before dividends to non-controlling interest)	614,001	9,604	(192,311)
Dividend to non-controlling interest	(16,921)	(7,671)	(6,102)
Effect of exchange rate fluctuation on cash held	(1,412)	6,216	702
Net increase (decrease) in cash and cash equivalents	45,502	52,392	(168,168)
Non-controlling Interest [member]
Disclosure of subsidiaries [line items]
Current assets	24,464,790	24,133,534	17,558,226
Non-current assets	18,319,458	14,306,566	13,806,364
Current liabilities	(19,688,650)	(17,580,738)	(14,141,549)
Non-current liabilities	(7,152,940)	(7,303,823)	(6,615,908)
Equity	15,942,658	13,555,539	10,607,133
Non-controlling interests	6,340,173	5,161,684	4,080,514
Sales	82,991,408	71,244,888	51,385,769
Profit (loss) for the period	1,065,900	1,791,822	302,912
Profit (loss) attributable to non-controlling interests	439,628	594,179	153,827
Cash flows from operating activities	810,208	178,134	994,433
Cash flows from investing activities	(1,242,278)	(1,082,963)	(698,527)
Cash flows from financing activities (before dividends to non-controlling interest)	897,560	839,600	(205,374)
Dividend to non-controlling interest	(80,294)	(59,540)	(60,052)
Effect of exchange rate fluctuation on cash held	9,177	15,126	(5,836)
Net increase (decrease) in cash and cash equivalents	₩ 394,373	₩ (109,643)	₩ 24,644

General Information - Details_4

General Information - Details of Associates (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Daesung Steel [member]
Disclosure of associates [line items]
Ownership (%)	20%
Domestic [member] | New Songdo International City Development, LLC [member]
Disclosure of associates [line items]
Category of business	Real estate rental
Ownership (%)	29.90%	29.90%
Region	Incheon
Domestic [member] | Gale International Korea, LLC [member]
Disclosure of associates [line items]
Category of business	Real estate rental
Ownership (%)	29.90%	29.90%
Region	Incheon
Domestic [member] | SNNC [member]
Disclosure of associates [line items]
Category of business	Raw material manufacturing and sales
Ownership (%)	49%	49%
Region	Gwangyang
Domestic [member] | KONES, Corp. [member]
Disclosure of associates [line items]
Category of business	Technical service
Ownership (%)	26.72%	26.72%
Region	Gyeongju
Domestic [member] | Chungju Enterprise City Development Co., Ltd [member]
Disclosure of associates [line items]
Category of business	Real estate development
Ownership (%)	29.53%	29.53%
Region	Chungju
Domestic [member] | DAEHO GLOBAL MANAGEMENT CO., LTD. [member]
Disclosure of associates [line items]
Category of business	Investment advisory service
Ownership (%)	35.82%	35.82%
Region	Pohang
Domestic [member] | Mokpo Deayang industrial Corporation [member]
Disclosure of associates [line items]
Category of business	Real estate development and rental
Ownership (%)	27.40%	27.40%
Region	Mokpo
Domestic [member] | Gunggi Green Energy [member]
Disclosure of associates [line items]
Category of business	Electricity generation
Ownership (%)	19%	19%
Region	Hwaseong
Domestic [member] | Pohang Special Welding Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Welding material and tools manufacturing and sales
Ownership (%)	50%	50%
Region	Pohang
Domestic [member] | EQP POSCO Global No1 Natural Resources Private Equity Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	27.23%	42.82%
Region	Seoul
Domestic [member] | KC Chemicals CORP [member]
Disclosure of associates [line items]
Category of business	Machinery manufacturing
Ownership (%)	18.76%	19%
Region	Hwaseong
Domestic [member] | POSTECH Social Enterprise Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	9.17%	9.17%
Region	Seoul
Domestic [member] | QSONE Co.,Ltd. [member]
Disclosure of associates [line items]
Category of business	Real estate rental and facility management
Ownership (%)	50%	50%
Region	Seoul
Domestic [member] | Chun-cheon Energy Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Electricity generation
Ownership (%)	49.10%	49.10%
Region	Chuncheon
Domestic [member] | Noeul Green Energy Co., Ltd [member]
Disclosure of associates [line items]
Category of business	Electricity generation
Ownership (%)	10%	10%
Region	Seoul
Domestic [member] | Posco-IDV Growth Ladder IP Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	17.86%	17.86%
Region	Seoul
Domestic [member] | Daesung Steel [member]
Disclosure of associates [line items]
Category of business	Steel sales
Ownership (%)	17.54%	17.54%
Region	Busan
Domestic [member] | Pohang E&E Co,. Ltd. [member]
Disclosure of associates [line items]
Category of business	Investment in waste energy
Ownership (%)	30%	30%
Region	Pohang
Domestic [member] | POSCO Energy Valley Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	20%	20%
Region	Pohang
Domestic [member] | Hyundai Invest Guggenheim CLO Private Special Asset Investment Trust II [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	38.57%	38.47%
Region	Seoul
Domestic [member] | Posco Agri-Food Export Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	30%	30%
Region	Seoul
Domestic [member] | Posco Culture Contents Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	31.67%	31.67%
Region	Seoul
Domestic [member] | PCC Amberstone Private Equity Fund I [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	8.80%	8.80%
Region	Seoul
Domestic [member] | UITrans LRT Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Transporting
Ownership (%)	38.19%	38.19%
Region	Seoul
Domestic [member] | POSCO Advanced Technical Staff Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	15.86%	15.87%
Region	Seoul
Domestic [member] | POSCO 4th Industrial Revolution Fund [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	19.05%	20%
Region	Seoul
Domestic [member] | Pureun Tongyeong Enviro Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Sewerage treatment
Ownership (%)	20.40%	20.40%
Region	Tongyeong
Domestic [member] | Pure Gimpo Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Construction
Ownership (%)	28.79%	28.79%
Region	Gimpo
Domestic [member] | Posgreen Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Lime and plaster manufacturing
Ownership (%)	19%	19%
Region	Gwangyang
Domestic [member] | Clean Iksan Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Construction
Ownership (%)	23.50%	23.50%
Region	Iksan
Domestic [member] | Innovalley Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Real estate development
Ownership (%)	28.77%	28.77%
Region	Yongin
Domestic [member] | Blue Ocean private equity fund [member]
Disclosure of associates [line items]
Category of business	Private equity financial
Ownership (%)	27.52%	27.52%
Region	Seoul
Domestic [member] | Western Inland Highway Co Ltd [member]
Disclosure of associates [line items]
Category of business	Construction
Ownership (%)		20.39%
Region	Incheon
Domestic [member] | INNOPOLIS Job Creation Fund II [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	6.13%	6.13%
Region	Seoul
Domestic [member] | Samcheok Blue Power Co.,Ltd.
Disclosure of associates [line items]
Category of business	Generation of electricity
Ownership (%)	34%	34%
Region	Samcheok
Domestic [member] | INKOTECH INC [member]
Disclosure of associates [line items]
Category of business	Electricity generation and sales
Ownership (%)	10%	10%
Region	Seoul
Domestic [member] | PCC Social Enterprise Fund II [member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	16.67%	16.67%
Region	Seoul
Domestic [member] | PCC Amberstone Private Equity Fund II [member]
Disclosure of associates [line items]
Category of business	Private equity trust
Ownership (%)	19.91%	19.91%
Region	Seoul
Domestic [member] | PCCConar No 1 Fund l [Member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	15.34%	14.68%
Region	Pohang
Domestic [member] | Hyochun CO., LTD [member]
Disclosure of associates [line items]
Category of business	Screen door operation and other
Ownership (%)	18%	18%
Region	Seoul
Domestic [member] | PCC EV Fund [Member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)		18.18%
Region	Pohang
Domestic [member] | IBKCPCC 1st Fund [Member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	18.18%	18.18%
Region	Pohang
Domestic [member] | 2019 PCC Materials and Parts Fund [Member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	8.70%	8.70%
Region	Pohang
Domestic [member] | PCCWoori LP secondary Fund [Member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	18.85%	18.85%
Region	Pohang
Domestic [member] | Link City PFV Inc.
Disclosure of associates [line items]
Category of business	Contruction, housing construction and sales
Ownership (%)	44%	44%
Region	Uijeongbu
Domestic [member] | BNH-POSCO Bio Healthcare Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	18.14%	18.14%
Region	Pohang
Domestic [member] | PCC-BM Project Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	8.77%	8.77%
Region	Pohang
Domestic [member] | Energy Innovation Fund [Member]
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	10.11%	10.11%
Region	Pohang
Domestic [member] | ConsusPSdevelopment Professional Private Real Estate Fund
Disclosure of associates [line items]
Category of business	Real estate development
Ownership (%)	50%	50%
Region	Seoul
Domestic [member] | POSTECH Holdings 4th Fund
Disclosure of associates [line items]
Category of business	Private Investment Association
Ownership (%)	40%	40%
Region	Pohang
Domestic [member] | SNU STH IP Fund [Member]
Disclosure of associates [line items]
Category of business	Private Investment Association
Ownership (%)	33.33%	33.33%
Region	Seoul
Domestic [member] | PCC-BM Project Fund 2
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	13.70%	13.70%
Region	Pohang
Domestic [member] | G&G Technology Innovation Fund No.1
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	13.97%	13.97%
Region	Seongnam
Domestic [member] | NPX-PCC Edutech Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	19.96%	19.96%
Region	Pohang
Domestic [member] | C&-PCC I Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	0.68%	0.68%
Region	Pohang
Domestic [member] | 2020 POSCO-MOORIM Bio New Technology Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	5%	5%
Region	Pohang
Domestic [member] | PCC-KAI Secondary I Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	19.12%	19.12%
Region	Seoul
Domestic [member] | Human Eco Land Company Limited [Member]
Disclosure of associates [line items]
Category of business	Sewage facilities management
Ownership (%)		27.95%
Region	Ansan
Domestic [member] | 2021 PCC Bio New Technology Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies
Ownership (%)	5.45%	5.45%
Region	Pohang
Domestic [member] | Consus OS Private Real Estate Fund [Member]
Disclosure of associates [line items]
Category of business	Real estate development
Ownership (%)	50%	50%
Region	Seoul
Domestic [member] | Consus New Deal Infra Development Specialized Private Special Asset Investment Trust [Member]
Disclosure of associates [line items]
Category of business	Investment Association
Ownership (%)	40%	40%
Region	Seoul
Domestic [member] | Pocheon-Hwado Highway Corp. (formerly, Metropolitan Outer Ring Expressway co., ltd.)
Disclosure of associates [line items]
Category of business	Investment in Expressway
Ownership (%)	27.64%	23.27%
Region	Incheon
Domestic [member] | RPSD Project Co., Ltd [Member]
Disclosure of associates [line items]
Category of business	Real estate development
Ownership (%)		29%
Region	Incheon
Domestic [member] | CURO CO.,LTD [Member]
Disclosure of associates [line items]
Category of business	Manufacturing, construction
Ownership (%)	0.53%	0.54%
Region	Ulsan
Domestic [member] | KPGE Inc. [Member]
Disclosure of associates [line items]
Category of business	Wholesales and retail, generator material, trade
Ownership (%)		25%
Region	Busan
Domestic [member] | PCC-Xinova PRE-IPO Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	9.09%
Region	Pohang
Domestic [member] | PCC-Bailey Project Fund
Disclosure of associates [line items]
Category of business	Investment in new technologies business
Ownership (%)	7.27%
Region	Pohang
Domestic [member] | Erae Ams Co.,Ltd
Disclosure of associates [line items]
Category of business	Automotive parts manufacturing
Ownership (%)	16.66%
Region	Daegu
Domestic [member] | CR Inotech Co., Ltd.
Disclosure of associates [line items]
Category of business	Manufacturing
Ownership (%)	19%
Region	Gwangyang
Domestic [member] | Posco JK Solid Solution Co., ltd
Disclosure of associates [line items]
Category of business	Material manufacturing for rechargeable battery
Ownership (%)	40%
Region	Yangsan
Domestic [member] | Consus BG Private Real Estate Fund No.2 [Member]
Disclosure of associates [line items]
Category of business	Real estate development
Ownership (%)	50%	50%
Region	Seoul
Domestic [member] | Hybrid ESG Secondary Venture No.1 [Member]
Disclosure of associates [line items]
Category of business	Investment Association
Ownership (%)	18.27%	18.27%
Region	Pohang
Foreign [member]
Disclosure of associates [line items]
Region	New Caledonia
Foreign [member] | VSC POSCO Steel Corporation [member]
Disclosure of associates [line items]
Category of business	Steel processing and sales
Ownership (%)		50%
Region	Vietnam
Foreign [member] | POSCHROME (PROPRIETARY) LIMITED [member]
Disclosure of associates [line items]
Category of business	Raw material manufacturing and sales
Ownership (%)	50%	50%
Region	South Africa
Foreign [member] | CAML RESOURCES PTY LTD. [member]
Disclosure of associates [line items]
Category of business	Raw material manufacturing and sales
Ownership (%)	33.34%	33.34%
Region	Australia
Foreign [member] | Nickel mining company SAS [member]
Disclosure of associates [line items]
Category of business	Raw material manufacturing and sales
Ownership (%)	49%	49%
Foreign [member] | PT. Wampu Electric Power [member]
Disclosure of associates [line items]
Category of business	Construction and civil engineering
Ownership (%)	20%	20%
Region	Indonesia
Foreign [member] | POSK(Pinghu) Steel Processing Center Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Steel processing and sales
Ownership (%)	20%	20%
Region	China
Foreign [member] | PT.INDONESIA POS CHEMTECH CHOSUN Ref [member]
Disclosure of associates [line items]
Category of business	Refractory manufacturing and sales
Ownership (%)	30.19%	30.19%
Region	Indonesia
Foreign [member] | NS-Thainox Auto Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Steel manufacturing and sales
Ownership (%)	49%	49%
Region	Thailand
Foreign [member] | Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd [member]
Disclosure of associates [line items]
Category of business	Tinplate manufacturing and sales
Ownership (%)		34%
Region	China
Foreign [member] | PT. Tanggamus Electric Power [member]
Disclosure of associates [line items]
Category of business	Construction and civil engineering
Ownership (%)	17.50%	17.50%
Region	Indonesia
Foreign [member] | LLP POSUK Titanium [member]
Disclosure of associates [line items]
Category of business	Titanium manufacturing and sales
Ownership (%)	35.30%	35.30%
Region	Kazakhstan
Foreign [member] | IMFA ALLOYS FINLEASE LTD. [member]
Disclosure of associates [line items]
Category of business	Raw material manufacturing and sales
Ownership (%)	24%	24%
Region	India
Foreign [member] | KRAKATAU POS-CHEM DONG-SUH CHEMICAL [member]
Disclosure of associates [line items]
Category of business	Chemical by-product manufacturing and sales
Ownership (%)	19%	19%
Region	Indonesia
Foreign [member] | 9404-5515 Quebec
Disclosure of associates [line items]
Category of business	Investments management
Ownership (%)	25.85%	10.40%
Region	Canada
Foreign [member] | Hamparan Mulya [member]
Disclosure of associates [line items]
Category of business	Resource development
Ownership (%)	45%	45%
Region	Indonesia
Foreign [member] | POS-SEAHSTEELWIRE (TIANJIN) CO., Ltd [member]
Disclosure of associates [line items]
Category of business	Steel manufacturing and sales
Ownership (%)	25%	25%
Region	China
Foreign [member] | Eureka Moly LLC [member]
Disclosure of associates [line items]
Category of business	Raw material manufacturing and sales
Ownership (%)	20%	20%
Region	USA
Foreign [member] | KIRIN VIETNAM CO., LTD [member]
Disclosure of associates [line items]
Category of business	Panel manufacturing
Ownership (%)	19%	19%
Region	Vietnam
Foreign [member] | POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Steel processing and sales
Ownership (%)	25%	25%
Region	China
Foreign [member] | POS-SeAH Steel Wire (Thailand) Co., Ltd. [member]
Disclosure of associates [line items]
Category of business	Steel manufacturing and sales
Ownership (%)	25%	25%
Region	Thailand
Foreign [member] | Jupiter Mines Limited [member]
Disclosure of associates [line items]
Category of business	Resource development
Ownership (%)	6.89%	6.89%
Region	Australia
Foreign [member] | SAMHWAN VINA CO., LTD [member]
Disclosure of associates [line items]
Category of business	Steel manufacturing and sales
Ownership (%)	19%	19%
Region	Vietnam
Foreign [member] | Saudi-Korean Company for Maintenance Properties Management LLC [member]
Disclosure of associates [line items]
Category of business	Building management
Ownership (%)	19%	19%
Region	Saudi Arabia
Foreign [member] | AMCI (WA) PTY LTD [member]
Disclosure of associates [line items]
Category of business	Iron ore sales & mine development
Ownership (%)	49%	49%
Region	Australia
Foreign [member] | NCR LLC [member]
Disclosure of associates [line items]
Category of business	Coal sales
Ownership (%)	22.10%	22.10%
Region	Canada
Foreign [member] | SHANGHAI LANSHENG DAEWOO CORP. [member]
Disclosure of associates [line items]
Category of business	Trading
Ownership (%)	49%	49%
Region	China
Foreign [member] | SHANGHAI WAIGAOQIAO FREE TRADE ZONE LANSHENG DAEWOO IN'L TRADING CO., LTD. [member]
Disclosure of associates [line items]
Category of business	Trading
Ownership (%)	49%	49%
Region	China
Foreign [member] | General Medicines Company Ltd. [member]
Disclosure of associates [line items]
Category of business	Medicine manufacturing and sales
Ownership (%)	33%	33%
Region	Sudan
Foreign [member] | KOREA LNG LTD. [member]
Disclosure of associates [line items]
Category of business	Gas production and sales
Ownership (%)	20%	20%
Region	England
Foreign [member] | AES-VCM Mong Duong Power Company Limited [member]
Disclosure of associates [line items]
Category of business	Electricity generation
Ownership (%)	30%	30%
Region	Vietnam
Foreign [member] | South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of associates [line items]
Category of business	Pipeline construction and management
Ownership (%)	25.04%	25.04%
Region	Myanmar
Foreign [member] | GLOBAL KOMSCO Daewoo LLC [member]
Disclosure of associates [line items]
Category of business	Cotton celluloid manufacturing and sales
Ownership (%)	35%	35%
Region	Uzbekistan
Foreign [member] | POSCO-Poggenamp Electrical Steel Pvt. Ltd. [member]
Disclosure of associates [line items]
Category of business	Steel processing and sales
Ownership (%)	26%	26%
Region	India
Foreign [member] | Qingdao Pohang DGENX Stainless Steel Pipe Co Ltd [member]
Disclosure of associates [line items]
Category of business	Exhaust meter manufacturing
Ownership (%)	40%	40%
Region	China
Foreign [member] | SHINPOONG DAEWOO PHARMA VIETNAM CO.,LTD [member]
Disclosure of associates [line items]
Category of business	Medicine production
Ownership (%)	3.42%	3.42%
Region	Vietnam
Foreign [member] | ZHEJIANG HUAYOU-POSCO ESM CO., LTD
Disclosure of associates [line items]
Category of business	Anode material Production
Ownership (%)	40%	40%
Region	China
Foreign [member] | MONG DUONG FINANCE HOLDINGS B.V
Disclosure of associates [line items]
Category of business	Financial Holdings
Ownership (%)	30%	30%
Region	Netherlands
Foreign [member] | FQM Australia Holdings Pty Ltd [Member]
Disclosure of associates [line items]
Category of business	Non-ferrous metal Mining
Ownership (%)	30%	30%
Region	Australia
Foreign [member] | Qingdao ZhongShou New Energy Technology Co Ltd [Member]
Disclosure of associates [line items]
Category of business	Artificial Graphite manufacturing
Ownership (%)	13.01%	19.09%
Region	China
Foreign [member] | Black Rock Mining Limited [Member]
Disclosure of associates [line items]
Category of business	Mining
Ownership (%)	12.90%	14.81%
Region	Australia
Foreign [member] | Inner Mongolia Sinuo New Material Technology Co.,Ltd
Disclosure of associates [line items]
Category of business	Artificial Graphite manufacturing
Ownership (%)	12.85%
Region	China
Foreign [member] | ZHANGJIAGANG XIAO-SHA COIL SERVICE CENTER CO.,LTD
Disclosure of associates [line items]
Category of business	Steel processing and sales
Ownership (%)	17.50%
Region	China
Foreign [member] | TMK Gulf International Pipe Industry L.L.C
Disclosure of associates [line items]
Category of business	Manufacturing
Ownership (%)	6.77%
Region	Oman

General Information - Details_5

General Information - Details of Joint Ventures (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Domestic [member] | POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of joint ventures [line items]
Category of business	Steel processing and sales
Ownership (%)	60%	60%
Region	Gwangyang
Domestic [member] | POSCO-KB Shipbuilding Restructuring Fund [member]
Disclosure of joint ventures [line items]
Category of business	Investment in new technologies
Ownership (%)	18.75%	18.75%
Region	Seoul
Domestic [member] | POSCO-NSC Venture Fund [member]
Disclosure of joint ventures [line items]
Category of business	Investment in new technologies
Ownership (%)	16.67%	16.67%
Region	Seoul
Domestic [member] | Posto Plutus Project 3rd Project Fund [member]
Disclosure of joint ventures [line items]
Category of business	Investment in new technologies
Ownership (%)	5.96%	5.96%
Region	Seoul
Domestic [member] | PCC Bio 2nd Fund [member]
Disclosure of joint ventures [line items]
Category of business	Investment in new technologies
Ownership (%)	19.72%	19.72%
Region	Seoul
Domestic [member] | Union PCC Portfolio Fund [member]
Disclosure of joint ventures [line items]
Category of business	Investment in new technologies
Ownership (%)	14.12%	14.12%
Region	Seoul
Domestic [member] | Eco Energy Solution Co., ltd
Disclosure of joint ventures [line items]
Category of business	Service
Ownership (%)	50%
Region	Seoul
Foreign [member] | KOBRASCO [member]
Disclosure of joint ventures [line items]
Category of business	Steel materials manufacturing and sales
Ownership (%)	50%	50%
Region	Brazil
Foreign [member] | PT. POSMI Steel Indonesia [member]
Disclosure of joint ventures [line items]
Category of business	Steel processing and sales
Ownership (%)		36.69%
Region	Indonesia
Foreign [member] | CSP — Compania Siderurgica do Pecem [member]
Disclosure of joint ventures [line items]
Category of business	Steel manufacturing and sales
Ownership (%)	20%	20%
Region	Brazil
Foreign [member] | BX STEEL POSCO Cold Rolled Sheet Co., Ltd. [member]
Disclosure of joint ventures [line items]
Category of business	Steel processing and sales
Ownership (%)	25%	25%
Region	China
Foreign [member] | POSCO-SAMSUNG-Slovakia Processing Center [member]
Disclosure of joint ventures [line items]
Category of business	Steel processing and sales
Ownership (%)	30%	30%
Region	Slovakia
Foreign [member] | YULCHON MEXICO S.A. DE C.V. [member]
Disclosure of joint ventures [line items]
Category of business	Tube for automobile manufacturing
Ownership (%)	11.85%	11.85%
Region	Mexico
Foreign [member] | Hyunson Engineering & Construction HYENCO [member]
Disclosure of joint ventures [line items]
Category of business	Construction
Ownership (%)	4.89%	4.89%
Region	Algeria
Foreign [member] | POSCO E&C Saudi Arabia [member]
Disclosure of joint ventures [line items]
Category of business	Civil engineering and construction
Ownership (%)	40%	40%
Region	Saudi Arabia
Foreign [member] | POS-AUSTEM Suzhou Automotive Co., Ltd [member]
Disclosure of joint ventures [line items]
Category of business	Automotive parts manufacturing
Ownership (%)	19.90%	19.90%
Region	China
Foreign [member] | POS-InfraAuto (Suzhou) Co., Ltd [member]
Disclosure of joint ventures [line items]
Category of business	Automotive parts manufacturing
Ownership (%)	16.20%	16.20%
Region	China
Foreign [member] | POS-AUSTEM YANTAI AUTOMOTIVE CO.,LTD
Disclosure of joint ventures [line items]
Category of business	Automotive parts manufacturing
Ownership (%)	11.10%	11.10%
Region	China
Foreign [member] | POS-AUSTEM WUHAN AUTOMOTIVE CO., LTD [member]
Disclosure of joint ventures [line items]
Category of business	Automotive parts manufacturing
Ownership (%)	7.43%	7.43%
Region	China
Foreign [member] | Kwanika Copper Corporation [member]
Disclosure of joint ventures [line items]
Category of business	Energy & resource development
Ownership (%)		34.04%
Region	Canada
Foreign [member] | DMSA/AMSA [member]
Disclosure of joint ventures [line items]
Category of business	Energy & resource development
Ownership (%)	3.89%	3.89%
Region	Madagascar
Foreign [member] | Roy Hill Holdings Pty Ltd. [member]
Disclosure of joint ventures [line items]
Category of business	Energy & resource development
Ownership (%)	12.50%	12.50%
Region	Australia
Foreign [member] | POSCO-NPS Niobium LLC [member]
Disclosure of joint ventures [line items]
Category of business	Mine development
Ownership (%)	50%	50%
Region	USA
Foreign [member] | HBIS-POSCO Automotive Steel Co., Ltd
Disclosure of joint ventures [line items]
Category of business	Steel manufacturing and sales
Ownership (%)	50%	50%
Region	China

General Information - Consolida

General Information - Consolidated Subsidiaries Acquired or Newly Established (Detail) - Subsidiaries [member]	12 Months Ended
	Dec. 31, 2022
POSCO Lithium Solution Co., Ltd. [Member]
Disclosure of subsidiaries [line items]
Date of addition	2022-12
Ownership (%)	100%
Reason	New establishment
Consus Pf private Real Estate Fund [Member]
Disclosure of subsidiaries [line items]
Date of addition	2022-09
Ownership (%)	66.70%
Reason	New establishment
Senex Holdings PTY LTD and subsidiaries (formerly, K-A Energy 1 PTY LTD)
Disclosure of subsidiaries [line items]
Date of addition	2022-01	[1],[2]
Ownership (%)	50.10%	[1],[2]
Reason	New establishment	[1],[2]
POSCO
Disclosure of subsidiaries [line items]
Date of addition	2022-03
Ownership (%)	100%
Reason	Spin-off from the controlling company
Posco International Mexico e-Mobility S.A DE C.V
Disclosure of subsidiaries [line items]
Date of addition	2022-03
Ownership (%)	100%
Reason	New establishment
eSteel4U
Disclosure of subsidiaries [line items]
Date of addition	2022-04
Ownership (%)	61.12%
Reason	New establishment
POSCO social investment fund
Disclosure of subsidiaries [line items]
Date of addition	2022-04
Ownership (%)	70%
Reason	New establishment
POSCO CHEMICAL CANADA INC
Disclosure of subsidiaries [line items]
Date of addition	2022-06
Ownership (%)	100%
Reason	New establishment
POSCO silicon solution co., ltd (formerly, TERA TECHNOS CO., Ltd.)
Disclosure of subsidiaries [line items]
Date of addition	2022-07
Ownership (%)	100%
Reason	New addition
ULTIUM CAM GP INC
Disclosure of subsidiaries [line items]
Date of addition	2022-09
Ownership (%)	85%
Reason	New establishment
ULTIUM CAM LIMITED PARTNERSHIP
Disclosure of subsidiaries [line items]
Date of addition	2022-09
Ownership (%)	85%
Reason	New establishment
POSCO(Wuhan) automotive processing center Co.,Ltd
Disclosure of subsidiaries [line items]
Date of addition	2022-09
Ownership (%)	100%
Reason	Spin-off from POSCO(Wuhu)Automotive Processing Center Co., Ltd.
POSCO BRAZIL LTDA
Disclosure of subsidiaries [line items]
Date of addition	2022-10
Ownership (%)	100%
Reason	New establishment
POSCO GS eco materials co., ltd
Disclosure of subsidiaries [line items]
Date of addition	2022-10
Ownership (%)	100%
Reason	New establishment
[1]During the year ended December 31, 2022, K-A

General Information - Consoli_2

General Information - Consolidated Subsidiaries Acquired or Newly Established (Parenthetical) (Detail)	Dec. 31, 2022
Senex Holdings PTY LTD [Member]
Disclosure of subsidiaries [line items]
Percentage of voting equity interests acquired	100%

General Information - Subsidiar

General Information - Subsidiaries That Were Excluded From Consolidation (Detail)	12 Months Ended
	Dec. 31, 2022
POSCAN ELKVIEW COAL LTD
Disclosure of subsidiaries [line items]
Date of exclusion	2022-08
Reason	Merged into POSCO Canada Ltd.
2015 POSCO New technology II Fund
Disclosure of subsidiaries [line items]
Date of exclusion	2022-12
Reason	Liquidation
POSCO CHEMICAL Free Zone Enterprise
Disclosure of subsidiaries [line items]
Date of exclusion	2022-12
Reason	Liquidation

Statement of Compliance - Addit

Statement of Compliance - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of initial application of standards or interpretations [line items]
Impairment loss on property, plant and equipment	₩ 213,183	₩ 311,520	₩ 27,040
Inventory write-down	259,678	₩ 78,783	₩ 54,014
Proceeds from insurance claim	234,000
Naengcheon stream [Member]
Disclosure of initial application of standards or interpretations [line items]
Impairment loss on property, plant and equipment	207,072
Inventory write-down	₩ 95,278

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Detail)	12 Months Ended
	Dec. 31, 2022
Bottom of range [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	5 years
Bottom of range [member] | Structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	4 years
Bottom of range [member] | Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	4 years
Bottom of range [member] | Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	3 years
Bottom of range [member] | Tools [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	3 years
Bottom of range [member] | Furniture and fixtures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	3 years
Bottom of range [member] | Finance lease assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	2 years
Top of range [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	50 years
Top of range [member] | Structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	50 years
Top of range [member] | Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	25 years
Top of range [member] | Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	20 years
Top of range [member] | Tools [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	10 years
Top of range [member] | Furniture and fixtures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	20 years
Top of range [member] | Finance lease assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	30 years
Top of range [member] | Bearer plants [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives	20 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Estimated Useful Lives of Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2022
Intellectual property rights [member] | Bottom of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	4 years
Intellectual property rights [member] | Top of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	25 years
Development costs [member] | Bottom of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	3 years
Development costs [member] | Top of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	5 years
Port facilities usage rights [member] | Bottom of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	4 years
Port facilities usage rights [member] | Top of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	75 years
Other intangible assets [member] | Bottom of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	2 years
Other intangible assets [member] | Top of range [member]
Disclosure of detailed information about intangible assets [line items]
Estimated useful lives of intangible assets	15 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Additional Information (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
IAS Number One Classification Of Financial Liabilities From Non Current To Non Current One [Member] | Exchangeable Bond [member] | With Effect From First Of January Two Thousand And Twenty Four [Member]
Disclosure of summary of significant accounting policies [Line Items]
Exchangeable bonds reclassfication from non current liabilities to current liabilities	₩ 1,358,294

Financial Risk Management - Net

Financial Risk Management - Net Borrowing-to-Equity Ratio (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [abstract]
Total borrowings	₩ 24,305,662	₩ 21,741,216
Less: Cash and cash equivalents	8,053,108	4,775,166
Net borrowings	16,252,554	16,966,050
Total equity	₩ 58,191,897	₩ 54,713,966	₩ 47,603,523	₩ 47,763,298
Net borrowings-to-equity ratio	27.93%	31.01%

Financial Risk Management - Dis

Financial Risk Management - Disclosure of Financial Instruments Classified as Transition Not Yet Completed (Detail) - Maturity Date After Thirty June Two Thousand And Twenty Three [Member] - USD LIBOR [Member] ₩ in Millions	Dec. 31, 2022 KRW (₩)
Non Derivative Financial Liabilities Borrowings [Member] | Transition Not Yet Completed [Member]
Disclosure In Tabular Form Of Financial Instruments For Which Transition Is Not Yet Completed [Line Items]
Notional amount	₩ 2,553,006
Non Derivative Financial Liabilities Borrowings [Member] | Modification Of Clause Completed [Member]
Disclosure In Tabular Form Of Financial Instruments For Which Transition Is Not Yet Completed [Line Items]
Notional amount	15,971
Non Derivative Financial Assets Loans [Member] | Transition Not Yet Completed [Member]
Disclosure In Tabular Form Of Financial Instruments For Which Transition Is Not Yet Completed [Line Items]
Notional amount	3,802
Interest rate swap contract [member] | Transition Not Yet Completed [Member]
Disclosure In Tabular Form Of Financial Instruments For Which Transition Is Not Yet Completed [Line Items]
Financial assets	35,781
Interest rate swap contract [member] | Modification Of Clause Completed [Member]
Disclosure In Tabular Form Of Financial Instruments For Which Transition Is Not Yet Completed [Line Items]
Financial assets	₩ 7,357

Financial Risk Management - D_2

Financial Risk Management - Disclosure In Tabular Form Of Financial Instruments For Which Transition Is Not Yet Completed (Parenthetical) (Detail) - USD LIBOR [Member] - Transition Not Yet Completed [Member] - Before June Thirtieth Two Thousand And Twenty Three [Member] ₩ in Millions	Dec. 31, 2022 KRW (₩)
Non Derivative Financial Assets Loans [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Notional amount	₩ 22,811
Interest rate swap contract [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Financial assets	8,236
Non Derivative Financial Liabilities Borrowings [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Notional amount	₩ 211,969

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Cash and cash equivalents [abstract]
Cash	₩ 7,510	₩ 8,940
Demand deposits and checking accounts	2,826,227	2,310,431
Time deposits	2,638,838	947,904
Other cash equivalents	2,580,533	1,507,891
Cash and cash equivalents	₩ 8,053,108	₩ 4,775,166

Cash and Cash Equivalents - S_2

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents - Additional Information (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Posco [member]
Disclosure of Cash and Cash Equivalents [Line Items]
Cash equivalents, restricted	₩ 7,638

Trade Accounts and Notes Rece_3

Trade Accounts and Notes Receivable - Summary of Trade Accounts and Notes Receivables (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current
Current trade accounts and notes receivable	₩ 9,702,142	₩ 9,978,939
Non-current
Non-current trade accounts and notes receivable	24,033	63,205
Gross amount [member]
Current
Trade accounts and notes receivable	8,695,788	9,266,729
Finance lease receivables	0	126
Unbilled Due from customers for contract work	1,340,146	1,027,039
Non-current
Trade accounts and notes receivable	68,342	113,370
Allowance for credit losses [member]
Current
Less: Allowance for doubtful accounts	(333,792)	(314,955)
Non-current
Less: Allowance for doubtful accounts	₩ (44,309)	₩ (50,165)

Trade Accounts and Notes Rece_4

Trade Accounts and Notes Receivable - Additional Information (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Trade accounts and notes receivables, net [member]
Disclosure of financial assets [line items]
Trade accounts and notes receivable sold to financial institutions, for which the derecognition conditions were not met	₩ 215,133	₩ 270,101

Trade Accounts and Notes Rece_5

Trade Accounts and Notes Receivable - Finance Lease Receivables (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of finance lease and operating lease by lessor [line items]
Finance lease receivables	₩ 0	₩ 126
Officers and employees
Disclosure of finance lease and operating lease by lessor [line items]
Finance lease receivables	0	75
ZHAOHUUI PROSPERITY INT'L LTD [member]
Disclosure of finance lease and operating lease by lessor [line items]
Finance lease receivables	₩ 0	₩ 51

Trade Accounts and Notes Rece_6

Trade Accounts and Notes Receivable - Summary of lease investment and net lease investment (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of finance lease and operating lease by lessor [line items]
Present value of minimum lease payment	₩ 0	₩ 126
Trade accounts and notes receivables, net [member]
Disclosure of finance lease and operating lease by lessor [line items]
Undiscounted lease payments	0	126
Present value of minimum lease payment	0	126
Less than 1 year [member] | Trade accounts and notes receivables, net [member]
Disclosure of finance lease and operating lease by lessor [line items]
Gross amount of lease payment	₩ 0	₩ 126

Other Receivables - Summary of

Other Receivables - Summary of Other Receivables (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current
Other current receivables	₩ 2,112,697	₩ 2,104,609
Non-current
Lease receivables	1,520,331	1,415,143
Other non-current receivables	1,520,331	1,415,143
Gross amount [member]
Current
Loans	278,346	331,692
Other accounts receivable	1,381,804	1,305,383
Accrued income	334,741	350,301
Deposits	131,468	130,011
Others	23,201	17,705
Lease receivables	46,764	63,568
Non-current
Loans	1,082,139	884,990
Other accounts receivable	237,161	196,018
Accrued income	121,783	121,041
Deposits	292,722	390,971
Lease receivables	55,312	80,317
Allowance for credit losses [member]
Current
Other current receivables	(83,627)	(94,051)
Non-current
Other non-current receivables	₩ (268,786)	₩ (258,194)

Other Receivables - Finance Lea

Other Receivables - Finance Lease Receivables (Detail) - Lease receivables [member] - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of finance lease and operating lease by lessor [line items]
Undiscounted finance lease payments to be received	₩ 102,076	₩ 143,885
Pohang University of Science and Technology
Disclosure of finance lease and operating lease by lessor [line items]
Undiscounted finance lease payments to be received	7,738
Korea Business Angels Association
Disclosure of finance lease and operating lease by lessor [line items]
Undiscounted finance lease payments to be received	2,621
HEUNG-A SHIPPING CO., LTD., HEUNG-A LINE CO., LTD., MSC
Disclosure of finance lease and operating lease by lessor [line items]
Undiscounted finance lease payments to be received	88,573	119,636
KOGAS, ONGC Videsh Limited, GAIL(India) Limited, Myanmar Oil and Gas Enterprise
Disclosure of finance lease and operating lease by lessor [line items]
Undiscounted finance lease payments to be received	₩ 3,144	₩ 24,249

Other Receivables - Summary o_2

Other Receivables - Summary of lease investment and net lease investment (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure Of Leases By Lessor [Line Items]
Present value of minimum lease payment	₩ 0	₩ 126
Other receivables [member]
Disclosure Of Leases By Lessor [Line Items]
Undiscounted lease payments	138,170	180,393
Unrealized interest income	(36,094)	(36,508)
Present value of minimum lease payment	102,076	143,885
Less than 1 year [member] | Other receivables [member]
Disclosure Of Leases By Lessor [Line Items]
Gross amount of lease payment	48,127	63,782
1 year - 3 years [member] | Other receivables [member]
Disclosure Of Leases By Lessor [Line Items]
Gross amount of lease payment	19,861	58,589
3 years – 5 years [member] | Other receivables [member]
Disclosure Of Leases By Lessor [Line Items]
Gross amount of lease payment	5,371	5,388
Over 5 years [members] | Other receivables [member]
Disclosure Of Leases By Lessor [Line Items]
Gross amount of lease payment	₩ 64,811	₩ 52,634

Other Financial Assets - Summar

Other Financial Assets - Summary of Other Financial Assets (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current
Derivatives assets	₩ 223,771	₩ 66,558
Debt securities	121,122	157,895
Deposit instruments	2,558,946	2,709,171
Short-term financial instruments	8,006,081	10,514,093
Other current financial assets	10,909,920	13,447,717
Non-current
Derivatives assets	136,224	182,538
Equity securities	1,462,088	1,466,061
Debt securities	78,901	3,968
Other Securities	632,469	430,998
Deposit instruments	22,856	36,109
Other non current financial assets	₩ 2,332,538	₩ 2,119,674

Other Financial Assets - Summ_2

Other Financial Assets - Summary of Other Financial Assets (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Government [member]
Disclosure of financial assets [line items]
Financial instruments restricted for use		₩ 4,314
Financial arrangements, pledge and others [member]
Disclosure of financial assets [line items]
Financial instruments restricted for use	₩ 73,192	83,738
Available-for-sale financial assets [member]
Disclosure of financial assets [line items]
Available-for-sale securities, respectively, have been provided as collateral for borrowings, construction projects and others	₩ 153,640	₩ 189,198

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of inventories [Line Items]
Inventories	₩ 16,133,403	₩ 16,096,371
Gross amount [member]
Disclosure of inventories [Line Items]
Finished goods	2,508,370	2,583,191
Merchandise	1,237,203	1,326,736
Semi-finished goods	3,453,150	2,902,717
Raw materials	4,171,049	3,777,112
Fuel and materials	1,109,100	917,906
Construction inventories	1,131,776	1,597,719
Materials-in-transit	2,738,439	3,051,786
Others	100,873	101,133
Inventories	16,449,960	16,258,300
Allowance for inventories valuation [member]
Disclosure of inventories [Line Items]
Inventories	₩ (316,557)	₩ (161,929)

Inventories - Changes of Allowa

Inventories - Changes of Allowance for Inventories Valuation (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Classes of current inventories [abstract]
Allowance for inventories valuation, beginning balance	₩ 161,929	₩ 131,642	₩ 216,143
Loss on valuation of inventories	259,678	78,783	54,014
Utilization on sale of inventories	(97,749)	(49,528)	(132,707)
Others	(7,301)	1,032	(5,808)
Allowance for inventories valuation, ending balance	₩ 316,557	₩ 161,929	₩ 131,642

Inventories - Additional Inform

Inventories - Additional Information (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
Cost of sales [member]
Disclosure of inventories [Line Items]
Loss of inventory due to damage	₩ 95,278

Assets Held for Sale - Details

Assets Held for Sale - Details of Assets Held For Sale and Related Liabilities (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Asset
Investment stock in joint ventures	₩ 2,477,645	₩ 2,311,373
Property, plant and equipment	31,781,196	29,596,698	₩ 29,400,141
Assets held for sale	12,003	78,470
Assets held for sale and related liabilities [member]
Asset
Cash and cash equivalents		554
Account receivables and other receivables		956
Investment stock in joint ventures		13,044
Property, plant and equipment		60,231
Intangible assets		3,530
Others		155
Assets held for sale		78,470
Liability
Others		189
Posco [member] | Assets held for sale and related liabilities [member]
Asset
Property, plant and equipment		29,236
Intangible assets		553
Assets held for sale		29,789
Liability
Others		185
Subsidiaries [member] | Assets held for sale and related liabilities [member]
Asset
Cash and cash equivalents	174	554
Account receivables and other receivables	648	956
Investment stock in joint ventures		13,044
Property, plant and equipment	10,552	30,995
Intangible assets		2,977
Others	629	155
Assets held for sale	12,003	48,681
Liability
Others	₩ 5	₩ 4

Assets Held for Sale - Detail_2

Assets Held for Sale - Details of Assets Held For Sale and Related Liabilities (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets and liabilities held for sale [Line Items]
Gain loss on disposal of land held for sale	₩ 18,502	₩ 12,016	₩ 15,548
Disposals of property, plant and equipment	72,780	98,843
Property plant and equipment	31,781,196	29,596,698	29,400,141
Investments in joint ventures	2,477,645	2,311,373
Land [member]
Assets and liabilities held for sale [Line Items]
Disposals of property, plant and equipment	1,247	117
Property plant and equipment	3,103,165	2,702,715	₩ 2,590,087
Assets held for sale and related liabilities [member]
Assets and liabilities held for sale [Line Items]
Property plant and equipment		60,231
Investments in joint ventures		13,044
Assets held for sale and related liabilities [member] | Synthetic Natural Gas [Member]
Assets and liabilities held for sale [Line Items]
Property plant and equipment reclassified as held for sale		24,000
Disposals of property, plant and equipment	13,695
Property plant and equipment	10,305
Assets held for sale and related liabilities [member] | Parent [member]
Assets and liabilities held for sale [Line Items]
Property plant and equipment		29,236
Assets held for sale and related liabilities [member] | Parent [member] | Emission Rights [Member]
Assets and liabilities held for sale [Line Items]
Gain loss on emission rights held for sale		1,316
Assets held for sale and related liabilities [member] | Subsidiaries [member]
Assets and liabilities held for sale [Line Items]
Property plant and equipment	10,552	30,995
Investments in joint ventures		13,044
Assets held for sale and related liabilities [member] | Subsidiaries [member] | Tangible And Intangible Assets [Member] | HUME COAL PTY LTD [Member]
Assets and liabilities held for sale [Line Items]
Non current assets classified as held for sale		33,972
Gains (losses) on disposals of non-current assets	55,025
Assets held for sale and related liabilities [member] | Subsidiaries [member] | POSCO(Guangdong) Automotive Steel Co, Ltd [member]
Assets and liabilities held for sale [Line Items]
Investments in joint ventures		13,044
Gains (loss) on disposals of investments in joint ventures	₩ (3,964)
Assets held for sale and related liabilities [member] | Land [member] | Parent [member] | Yanghak Neighbourhood Park Reserve Development Area [Member]
Assets and liabilities held for sale [Line Items]
Gain loss on disposal of land held for sale		₩ 43,760

Investments in Associates and_3

Investments in Associates and Joint Ventures - Summary of Investments in Associates and Joint Ventures (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments in subsidiaries, joint ventures and associates [abstract]
Investments in associates	₩ 2,518,906	₩ 2,203,274
Investments in joint ventures	2,477,645	2,311,373
Investments in associates and joint ventures	₩ 4,996,551	₩ 4,514,647	₩ 3,876,249

Investments in Associates and_4

Investments in Associates and Joint Ventures - Details of Investments in Associates (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩) Companies shares	Dec. 31, 2021 KRW (₩)
Disclosure of associates [line items]
Investments in associates	₩ 2,518,906	₩ 2,203,274
Daesung Steel [member]
Disclosure of associates [line items]
Ownership (%)	20%
Domestic [member]
Disclosure of associates [line items]
Investments in associates	₩ 854,078	₩ 1,062,910
Domestic [member] | EQP POSCO Global No1 Natural Resources Private Equity Fund [member]
Disclosure of associates [line items]
Number of shares | shares	178,691,901,565
Ownership (%)	27.23%	42.82%
Investments in associates		₩ 176,136
Domestic [member] | Samcheok Blue Power Co.,Ltd.
Disclosure of associates [line items]
Number of shares | shares	4,507,138
Ownership (%)	34%
Investments in associates	₩ 352,500	₩ 382,887
Domestic [member] | SNNC [member]
Disclosure of associates [line items]
Number of shares | shares	18,130,000
Ownership (%)	49%	49%
Investments in associates	₩ 182,414	₩ 171,332
Domestic [member] | QSONE Co.,Ltd. [member]
Disclosure of associates [line items]
Number of shares | shares	200,000
Ownership (%)	50%	50%
Investments in associates	₩ 86,378	₩ 86,058
Domestic [member] | Chun-cheon Energy Co., Ltd. [member]
Disclosure of associates [line items]
Number of shares | shares	17,308,143
Ownership (%)	49.10%	49.10%
Investments in associates	₩ 9,513	₩ 9,571
Domestic [member] | Western Inland Highway Co Ltd [member]
Disclosure of associates [line items]
Ownership (%)		20.39%
Investments in associates		₩ 53,563
Domestic [member] | Pocheon-Hwado Highway Corp. [member]
Disclosure of associates [line items]
Number of shares | shares	6,981,975
Ownership (%)	27.64%
Investments in associates	₩ 27,165	₩ 28,813
Domestic [member] | Chungju Enterprise City Development Co., Ltd [member]
Disclosure of associates [line items]
Number of shares | shares	1,181,160
Ownership (%)	29.53%	29.53%
Investments in associates	₩ 14,605	₩ 19,191
Domestic [member] | Daesung Steel [member]
Disclosure of associates [line items]
Number of shares | shares	108,038
Ownership (%)	17.54%	17.54%
Investments in associates	₩ 20,469	₩ 19,073
Domestic [member] | PCC Amberstone Private Equity Fund I [member]
Disclosure of associates [line items]
Number of shares | shares	8,130,098,340
Ownership (%)	8.80%	8.80%
Investments in associates	₩ 9,326	₩ 9,251
Domestic [member] | Other associates [member]
Disclosure of associates [line items]
Number of companies in other associates | Companies	58
Investments in associates	₩ 151,708	107,035
Domestic [member] | Acquisition cost [member] | Samcheok Blue Power Co.,Ltd.
Disclosure of associates [line items]
Investments in associates	429,904
Domestic [member] | Acquisition cost [member] | SNNC [member]
Disclosure of associates [line items]
Investments in associates	90,650
Domestic [member] | Acquisition cost [member] | QSONE Co.,Ltd. [member]
Disclosure of associates [line items]
Investments in associates	84,395
Domestic [member] | Acquisition cost [member] | Chun-cheon Energy Co., Ltd. [member]
Disclosure of associates [line items]
Investments in associates	86,541
Domestic [member] | Acquisition cost [member] | Pocheon-Hwado Highway Corp. [member]
Disclosure of associates [line items]
Investments in associates	34,910
Domestic [member] | Acquisition cost [member] | Chungju Enterprise City Development Co., Ltd [member]
Disclosure of associates [line items]
Investments in associates	5,906
Domestic [member] | Acquisition cost [member] | Daesung Steel [member]
Disclosure of associates [line items]
Investments in associates	14,000
Domestic [member] | Acquisition cost [member] | PCC Amberstone Private Equity Fund I [member]
Disclosure of associates [line items]
Investments in associates	7,882
Foreign [member]
Disclosure of associates [line items]
Investments in associates	₩ 1,664,828	₩ 1,140,364
Foreign [member] | South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of associates [line items]
Number of shares | shares	135,219,000
Ownership (%)	25.04%	25.04%
Investments in associates	₩ 290,318	₩ 238,601
Foreign [member] | AES-VCM Mong Duong Power Company Limited [member]
Disclosure of associates [line items]
Ownership (%)	30%	30%
Investments in associates	₩ 209,594	₩ 182,639
Foreign [member] | 9404-5515 Quebec Inc. [member]
Disclosure of associates [line items]
Number of shares | shares	284,463,243
Ownership (%)	25.85%
Investments in associates	₩ 331,261	₩ 135,738
Foreign [member] | FQM Australia Holdings Pty Ltd [member]
Disclosure of associates [line items]
Number of shares | shares	186,000,030
Ownership (%)	30%	30%
Investments in associates	₩ 98,103	₩ 91,052
Foreign [member] | Eureka Moly LLC [member]
Disclosure of associates [line items]
Ownership (%)	20%	20%
Investments in associates	₩ 14,574	₩ 13,633
Foreign [member] | AMCI (WA) PTY LTD [member]
Disclosure of associates [line items]
Number of shares | shares	49
Ownership (%)	49%	49%
Investments in associates	₩ 57,830	₩ 67,972
Foreign [member] | NCR LLC [member]
Disclosure of associates [line items]
Ownership (%)	22.10%	22.10%
Investments in associates	₩ 187,372	₩ 102,319
Foreign [member] | KOREA LNG LTD. [member]
Disclosure of associates [line items]
Number of shares | shares	2,400
Ownership (%)	20%	20%
Investments in associates	₩ 29,124	₩ 31,340
Foreign [member] | Nickel mining company SAS [member]
Disclosure of associates [line items]
Number of shares | shares	3,234,698
Ownership (%)	49%	49%
Investments in associates	₩ 90,636	₩ 48,249
Foreign [member] | Zhejiang Huayou Posco Esm Co Ltd [Member]
Disclosure of associates [line items]
Number of shares | shares	565,680,000
Ownership (%)	40%
Investments in associates	₩ 98,933	₩ 22,769
Foreign [member] | Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd [member]
Disclosure of associates [line items]
Ownership (%)		34%
Investments in associates		₩ 19,099
Foreign [member] | PT. Wampu Electric Power [member]
Disclosure of associates [line items]
Number of shares | shares	8,708,400
Ownership (%)	20%	20%
Investments in associates	₩ 16,659	₩ 15,851
Foreign [member] | POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of associates [line items]
Number of shares | shares	50
Ownership (%)	25%	25%
Investments in associates	₩ 8,590	₩ 9,140
Foreign [member] | Other associates [member]
Disclosure of associates [line items]
Number of companies in other associates | Companies	29
Investments in associates	₩ 231,834	₩ 161,962
Foreign [member] | Acquisition cost [member] | South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of associates [line items]
Investments in associates	132,907
Foreign [member] | Acquisition cost [member] | AES-VCM Mong Duong Power Company Limited [member]
Disclosure of associates [line items]
Investments in associates	164,303
Foreign [member] | Acquisition cost [member] | 9404-5515 Quebec Inc. [member]
Disclosure of associates [line items]
Investments in associates	328,509
Foreign [member] | Acquisition cost [member] | FQM Australia Holdings Pty Ltd [member]
Disclosure of associates [line items]
Investments in associates	109,568
Foreign [member] | Acquisition cost [member] | Eureka Moly LLC [member]
Disclosure of associates [line items]
Investments in associates	240,123
Foreign [member] | Acquisition cost [member] | AMCI (WA) PTY LTD [member]
Disclosure of associates [line items]
Investments in associates	209,664
Foreign [member] | Acquisition cost [member] | NCR LLC [member]
Disclosure of associates [line items]
Investments in associates	181,535
Foreign [member] | Acquisition cost [member] | KOREA LNG LTD. [member]
Disclosure of associates [line items]
Investments in associates	135,205
Foreign [member] | Acquisition cost [member] | Nickel mining company SAS [member]
Disclosure of associates [line items]
Investments in associates	157,585
Foreign [member] | Acquisition cost [member] | Zhejiang Huayou Posco Esm Co Ltd [Member]
Disclosure of associates [line items]
Investments in associates	104,432
Foreign [member] | Acquisition cost [member] | PT. Wampu Electric Power [member]
Disclosure of associates [line items]
Investments in associates	10,054
Foreign [member] | Acquisition cost [member] | POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of associates [line items]
Investments in associates	₩ 4,723

Investments in Associates and_5

Investments in Associates and Joint Ventures - Details of Investments in Associates (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of associates [line items]
Investment in associates provided as collateral for borrowings	₩ 628,573	₩ 629,832
Daesung Steel [member]
Disclosure of associates [line items]
Proportion of ownership in associate	20%

Investments in Associates and_6

Investments in Associates and Joint Ventures - Details of Investments in Joint Ventures (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩) Companies shares	Dec. 31, 2021 KRW (₩)
Disclosure of joint ventures [line items]
Investments in joint ventures	₩ 2,477,645	₩ 2,311,373
Domestic [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	₩ 170,310	₩ 176,514
Domestic [member] | POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of joint ventures [line items]
Number of shares | shares	11,568,000
Ownership (%)	60%	60%
Investments in joint ventures	₩ 161,465	₩ 169,838
Domestic [member] | Other joint ventures [member]
Disclosure of joint ventures [line items]
Number of companies in other joint ventures | Companies	6
Investments in joint ventures	₩ 8,845	6,676
Domestic [member] | Acquisition cost [member] | POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	115,680
Foreign [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	₩ 2,307,335	₩ 2,134,859
Foreign [member] | Roy Hill Holdings Pty Ltd. [member]
Disclosure of joint ventures [line items]
Number of shares | shares	13,117,972
Ownership (%)	12.50%	12.50%
Investments in joint ventures	₩ 1,418,022	₩ 1,346,712
Foreign [member] | POSCO-NPS Niobium LLC [member]
Disclosure of joint ventures [line items]
Number of shares | shares	325,050,000
Ownership (%)	50%	50%
Investments in joint ventures	₩ 412,002	₩ 393,793
Foreign [member] | KOBRASCO [member]
Disclosure of joint ventures [line items]
Number of shares | shares	2,010,719,185
Ownership (%)	50%	50%
Investments in joint ventures	₩ 103,044	₩ 68,296
Foreign [member] | BX STEEL POSCO Cold Rolled Sheet Co., Ltd. [member]
Disclosure of joint ventures [line items]
Ownership (%)	25%	25%
Investments in joint ventures	₩ 111,219	₩ 107,650
Foreign [member] | DMSA/AMSA [member]
Disclosure of joint ventures [line items]
Ownership (%)	3.89%	3.89%
Investments in joint ventures	₩ 23,740	₩ 24,144
Foreign [member] | CSP - Compania Siderurgica do Pecem [member]
Disclosure of joint ventures [line items]
Number of shares | shares	1,578,377,432
Ownership (%)	20%	20%
Investments in joint ventures	₩ 0	₩ 52,257
Foreign [member] | HBIS-POSCO Automotive Steel Co., Ltd [member]
Disclosure of joint ventures [line items]
Ownership (%)	50%	50%
Investments in joint ventures	₩ 216,138	₩ 110,769
Foreign [member] | Other joint ventures [member]
Disclosure of joint ventures [line items]
Number of companies in other joint ventures | Companies	9
Investments in joint ventures	₩ 23,170	₩ 31,238
Foreign [member] | Acquisition cost [member] | Roy Hill Holdings Pty Ltd. [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	1,528,672
Foreign [member] | Acquisition cost [member] | POSCO-NPS Niobium LLC [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	364,609
Foreign [member] | Acquisition cost [member] | KOBRASCO [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	32,950
Foreign [member] | Acquisition cost [member] | BX STEEL POSCO Cold Rolled Sheet Co., Ltd. [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	61,961
Foreign [member] | Acquisition cost [member] | DMSA/AMSA [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	346,880
Foreign [member] | Acquisition cost [member] | CSP - Compania Siderurgica do Pecem [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	676,060
Foreign [member] | Acquisition cost [member] | HBIS-POSCO Automotive Steel Co., Ltd [member]
Disclosure of joint ventures [line items]
Investments in joint ventures	₩ 235,251

Investments in Associates and_7

Investments in Associates and Joint Ventures - Details of Investments in Joint Ventures (Parenthetical) (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
CSP - Compania Siderurgica do Pecem [member]
Disclosure of joint ventures [line items]
Impairment loss	₩ 160,415

Investments in Associates and_8

Investments in Associates and Joint Ventures - Changes in Investments in Associates and Joint Ventures (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩) Companies	Dec. 31, 2021 KRW (₩) Companies	Dec. 31, 2020 KRW (₩)
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	₩ 4,514,647	₩ 3,876,249
Acquisition	544,376	601,283
Dividends	(638,244)	(697,447)
Share of profits (losses)	676,260	649,569	₩ 133,297
Other increase (decrease)	(100,488)	84,993
Book value, ending balance	4,996,551	4,514,647	3,876,249
Domestic [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	1,239,424	1,011,735
Acquisition	51,082	306,501
Dividends	(188,630)	(27,621)
Share of profits (losses)	151,482	34,332
Other increase (decrease)	(228,970)	(85,523)
Book value, ending balance	1,024,388	1,239,424	1,011,735
Domestic [member] | POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	169,838	153,457
Dividends	(24,000)
Share of profits (losses)	15,604	16,243
Other increase (decrease)	23	138
Book value, ending balance	161,465	169,838	153,457
Domestic [member] | EQP POSCO Global No1 Natural Resources Private Equity Fund [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	176,136	175,939
Dividends	(143,170)
Share of profits (losses)	145,822	197
Other increase (decrease)	(178,788)
Book value, ending balance		176,136	175,939
Domestic [member] | Samcheok Blue Power Co.,Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	382,887	145,092
Acquisition		250,495
Dividends	(9,992)	(405)
Share of profits (losses)	(19,354)	(4,248)
Other increase (decrease)	(1,041)	(8,047)
Book value, ending balance	352,500	382,887	145,092
Domestic [member] | SNNC [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	171,332	160,332
Dividends	(5,348)	(18,243)
Share of profits (losses)	15,484	29,314
Other increase (decrease)	946	(71)
Book value, ending balance	182,414	171,332	160,332
Domestic [member] | QSONE Co.,Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	86,058	86,004
Dividends	(1,100)	(1,140)
Share of profits (losses)	1,420	1,194
Book value, ending balance	86,378	86,058	86,004
Domestic [member] | Chun-cheon Energy Co., Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	9,571	23,913
Share of profits (losses)	(802)	(15,094)
Other increase (decrease)	744	752
Book value, ending balance	9,513	9,571	23,913
Domestic [member] | Chungju Enterprise City Development Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	19,191	17,137
Share of profits (losses)	(453)	2,054
Other increase (decrease)	(4,133)
Book value, ending balance	14,605	19,191	17,137
Domestic [member] | Daesung Steel [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	19,073	16,990
Share of profits (losses)	1,396	2,083
Book value, ending balance	20,469	19,073	16,990
Domestic [member] | Western Inland Highway Co Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	53,563	45,070
Acquisition		4,031
Share of profits (losses)	(125)	(1,981)
Other increase (decrease)	(53,438)	6,443
Book value, ending balance		53,563	45,070
Domestic [member] | Pocheon-Hwado Highway Corp. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	28,813	13,721
Acquisition	5,519	13,954
Share of profits (losses)	(4,683)	(2,679)
Other increase (decrease)	(2,484)	3,817
Book value, ending balance	₩ 27,165	₩ 28,813	13,721
Domestic [member] | Other associates and joint ventures [member]
Disclosure of investments in associates and joint ventures [Line Items]
Number of companies in other associates and joint ventures | Companies	64	62
Book value, beginning balance	₩ 113,711	₩ 117,486
Acquisition	45,563	38,021
Dividends	(4,368)	(7,159)
Share of profits (losses)	(3,931)	6,399
Other increase (decrease)	9,578	(41,036)
Book value, ending balance	160,553	113,711	117,486
Domestic [member] | NEXTRAIN Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance		47,364
Share of profits (losses)		(127)
Other increase (decrease)		(47,237)
Book value, ending balance			47,364
Domestic [member] | PCC Amberstone Private Equity Fund 1 [Member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	9,251	9,230
Dividends	(652)	(674)
Share of profits (losses)	1,104	977
Other increase (decrease)	(377)	(282)
Book value, ending balance	9,326	9,251	9,230
Foreign [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	3,275,223	2,864,514
Acquisition	493,294	294,782
Dividends	(449,614)	(669,826)
Share of profits (losses)	524,778	615,237
Other increase (decrease)	128,482	170,516
Book value, ending balance	3,972,163	3,275,223	2,864,514
Foreign [member] | Roy Hill Holdings Pty Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	1,346,712	1,418,056
Dividends	(233,592)	(522,947)
Share of profits (losses)	273,084	392,887
Other increase (decrease)	31,818	58,716
Book value, ending balance	1,418,022	1,346,712	1,418,056
Foreign [member] | POSCO-NPS Niobium LLC [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	393,793	353,725
Dividends	(34,909)	(20,479)
Share of profits (losses)	25,884	28,729
Other increase (decrease)	27,234	31,818
Book value, ending balance	412,002	393,793	353,725
Foreign [member] | KOBRASCO [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	68,296	54,400
Dividends	(21,287)	(39,059)
Share of profits (losses)	48,267	52,118
Other increase (decrease)	7,768	837
Book value, ending balance	103,044	68,296	54,400
Foreign [member] | BX STEEL POSCO Cold Rolled Sheet Co., Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	107,650	91,270
Share of profits (losses)	6,527	6,291
Other increase (decrease)	(2,958)	10,089
Book value, ending balance	111,219	107,650	91,270
Foreign [member] | DMSA/AMSA [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	24,144	31,104
Share of profits (losses)	(2,108)	674
Other increase (decrease)	1,704	(7,634)
Book value, ending balance	23,740	24,144	31,104
Foreign [member] | CSP - Compania Siderurgica do Pecem [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	52,257
Acquisition		19,176
Share of profits (losses)	(90,395)	22,398
Other increase (decrease)	38,138	10,683
Book value, ending balance		52,257
Foreign [member] | HBIS-POSCO Automotive Steel Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	110,769
Acquisition	126,195	109,057
Share of profits (losses)	(10,515)	1,636
Other increase (decrease)	(10,311)	76
Book value, ending balance	₩ 216,138	₩ 110,769
Foreign [member] | Other associates and joint ventures [member]
Disclosure of investments in associates and joint ventures [Line Items]
Number of companies in other associates and joint ventures | Companies	37	38
Book value, beginning balance	₩ 193,200	₩ 132,411
Acquisition	29,975	12,184
Dividends	(56,527)	(4,713)
Share of profits (losses)	96,740	48,555
Other increase (decrease)	(8,384)	4,763
Book value, ending balance	255,004	193,200	132,411
Foreign [member] | AES-VCM Mong Duong Power Company Limited [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	182,639	158,777
Dividends	(33,174)	(28,623)
Share of profits (losses)	45,382	35,959
Other increase (decrease)	14,747	16,526
Book value, ending balance	209,594	182,639	158,777
Foreign [member] | South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	238,601	199,342
Dividends	(14,541)	(27,828)
Share of profits (losses)	50,143	48,159
Other increase (decrease)	16,115	18,928
Book value, ending balance	290,318	238,601	199,342
Foreign [member] | 9404-5515 Quebec Inc.
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	135,738	123,296
Acquisition	172,316
Dividends	(31,949)	(16,999)
Share of profits (losses)	25,195	18,071
Other increase (decrease)	29,961	11,370
Book value, ending balance	331,261	135,738	123,296
Foreign [member] | FQM Australia Holdings Pty Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	91,052
Acquisition		109,568
Share of profits (losses)	166	(17,997)
Other increase (decrease)	6,885	(519)
Book value, ending balance	98,103	91,052
Foreign [member] | Eureka Moly LLC [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	13,633	43,520
Share of profits (losses)		(32,607)
Other increase (decrease)	941	2,720
Book value, ending balance	14,574	13,633	43,520
Foreign [member] | AMCI (WA) PTY LTD [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	67,972	71,732
Share of profits (losses)	(3,964)	(5,986)
Other increase (decrease)	(6,178)	2,226
Book value, ending balance	57,830	67,972	71,732
Foreign [member] | Nickel mining company SAS [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	48,249	40,890
Share of profits (losses)	42,169	7,243
Other increase (decrease)	218	116
Book value, ending balance	90,636	48,249	40,890
Foreign [member] | KOREA LNG LTD. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	31,340	42,229
Dividends	(21,161)	(9,178)
Share of profits (losses)	21,027	9,145
Other increase (decrease)	(2,082)	(10,856)
Book value, ending balance	29,124	31,340	42,229
Foreign [member] | NCR LLC [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	102,319	46,608
Acquisition	82,798	44,797
Share of profits (losses)	(2,338)	(2,016)
Other increase (decrease)	4,593	12,930
Book value, ending balance	187,372	102,319	46,608
Foreign [member] | PT. Wampu Electric Power [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	15,851	12,716
Dividends	(2,474)
Share of profits (losses)	823	1,389
Other increase (decrease)	2,459	1,746
Book value, ending balance	16,659	15,851	12,716
Foreign [member] | Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	19,099	15,181
Share of profits (losses)	213	1,752
Other increase (decrease)	(19,312)	2,166
Book value, ending balance		19,099	15,181
Foreign [member] | POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	9,140	7,110
Share of profits (losses)	(220)	675
Other increase (decrease)	(330)	1,355
Book value, ending balance	8,590	9,140	7,110
Foreign [member] | Zhejiang Huayou Posco Esm Co Ltd [Member]
Disclosure of investments in associates and joint ventures [Line Items]
Book value, beginning balance	22,769	22,147
Acquisition	82,010
Share of profits (losses)	(1,302)	(1,838)
Other increase (decrease)	(4,544)	2,460
Book value, ending balance	₩ 98,933	₩ 22,769	₩ 22,147

Investments in Associates and_9

Investments in Associates and Joint Ventures - Changes in Investments in Associates and Joint Ventures (Parenthetical) (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
EQP POSCO Global No1 Natural Resources Private Equity Fund [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Impairment loss	₩ 10,065

Investments in Associates an_10

Investments in Associates and Joint Ventures - Summarized Financial Information of Associates and Joint Ventures (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of investments in associates and joint ventures [Line Items]
Assets	₩ 99,021,750	₩ 92,298,890
Liabilities	40,829,853	37,584,924
Equity	58,191,897	54,713,966	₩ 47,603,523	₩ 47,763,298
Sales	85,003,616	76,009,201	57,466,678
Net income (loss)	3,585,957	7,175,982	₩ 1,748,492
Domestic [member] | POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	447,604	470,330
Liabilities	175,229	185,622
Equity	272,375	284,708
Sales	252,246	172,441
Net income (loss)	27,628	28,699
Domestic [member] | EQP POSCO Global No1 Natural Resources Private Equity Fund [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	9,471	400,339
Liabilities	480	574
Equity	8,991	399,765
Net income (loss)	425,366	5,411
Domestic [member] | Samcheok Blue Power Co.,Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	3,515,861	2,301,783
Liabilities	2,885,218	1,620,752
Equity	630,643	681,031
Net income (loss)	(8,447)	(6,226)
Domestic [member] | SNNC [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	667,440	628,075
Liabilities	274,801	236,726
Equity	392,639	391,349
Sales	986,557	869,815
Net income (loss)	10,273	75,125
Domestic [member] | QSONE Co.,Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	253,078	251,158
Liabilities	80,322	79,042
Equity	172,756	172,116
Sales	18,753	17,962
Net income (loss)	2,840	2,388
Domestic [member] | Chun-cheon Energy Co., Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	634,842	616,111
Liabilities	527,190	528,683
Equity	107,652	87,428
Sales	585,610	327,534
Net income (loss)	20,224	(5,424)
Domestic [member] | Western Inland Highway Co Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets		305,166
Liabilities		42,052
Equity		263,114
Net income (loss)		(2,137)
Domestic [member] | Daesung Steel [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	175,429	176,458
Liabilities	90,126	99,112
Equity	85,303	77,346
Sales	128,401	113,706
Net income (loss)	7,957	11,868
Domestic [member] | Chungju Enterprise City Development Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	24,926	56,418
Liabilities	5,769	21,740
Equity	19,157	34,678
Sales	17,189	45,543
Net income (loss)	(1,521)	6,957
Domestic [member] | PCC Amberstone Private Equity Fund 1 [Member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	106,024	105,169
Equity	106,024	105,169
Sales	13,877	11,910
Net income (loss)	12,546	11,110
Domestic [member] | Pocheon-Hwado Highway Corp. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	366,163	217,888
Liabilities	244,455	95,005
Equity	121,708	122,883
Net income (loss)	(1,175)	(929)
Foreign [member] | Roy Hill Holdings Pty Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	9,859,888	9,165,759
Liabilities	2,152,428	2,227,659
Equity	7,707,460	6,938,100
Sales	7,706,908	8,839,084
Net income (loss)	2,542,223	3,740,696
Foreign [member] | POSCO-NPS Niobium LLC [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	823,800	787,383
Equity	823,800	787,383
Net income (loss)	49,341	52,451
Foreign [member] | KOBRASCO [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	262,724	194,022
Liabilities	57,242	57,430
Equity	205,482	136,592
Sales	147,843	165,224
Net income (loss)	96,534	104,507
Foreign [member] | BX STEEL POSCO Cold Rolled Sheet Co., Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	663,509	727,958
Liabilities	245,499	324,222
Equity	418,010	403,736
Sales	1,881,946	2,044,978
Net income (loss)	26,106	25,165
Foreign [member] | DMSA/AMSA [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	3,022,659	3,631,856
Liabilities	2,412,377	2,068,847
Equity	610,282	1,563,009
Sales	1,368,730	749,634
Net income (loss)	(54,212)	636,113
Foreign [member] | CSP - Compania Siderurgica do Pecem [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	4,422,752	3,777,391
Liabilities	3,678,956	3,542,398
Equity	743,796	234,993
Sales	3,101,132	2,570,010
Net income (loss)	500,082	653,370
Foreign [member] | HBIS-POSCO Automotive Steel Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	712,633	502,645
Liabilities	270,668	261,765
Equity	441,965	240,880
Sales	473,494	482,696
Net income (loss)	(15,515)	3,272
Foreign [member] | South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	1,705,670	1,604,624
Liabilities	546,262	651,751
Equity	1,159,408	952,873
Sales	447,696	439,974
Net income (loss)	200,246	192,322
Foreign [member] | AES-VCM Mong Duong Power Company Limited [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	1,701,272	1,677,096
Liabilities	1,019,227	1,084,900
Equity	682,045	592,196
Sales	417,021	366,205
Net income (loss)	151,022	119,863
Foreign [member] | 9404-5515 Quebec Inc.
Disclosure of investments in associates and joint ventures [Line Items]
Assets	1,397,061	1,317,335
Liabilities		3
Equity	1,397,061	1,317,332
Net income (loss)	182,708	173,763
Foreign [member] | FQM Australia Holdings Pty Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	1,458,318	1,348,138
Liabilities	1,131,628	1,021,630
Equity	326,690	326,508
Sales	493,202	243,611
Net income (loss)	(22,768)	(64,143)
Foreign [member] | Nickel mining company SAS [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	539,318	475,751
Liabilities	279,291	307,570
Equity	260,027	168,181
Sales	379,922	328,570
Net income (loss)	91,008	31,688
Foreign [member] | KOREA LNG LTD. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	145,845	157,060
Liabilities	225	357
Equity	145,620	156,703
Sales	107,295	47,843
Net income (loss)	105,135	45,724
Foreign [member] | PT. Wampu Electric Power [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	209,815	209,172
Liabilities	129,520	132,917
Equity	80,295	76,255
Sales	21,760	20,288
Net income (loss)	4,115	6,946
Foreign [member] | Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets		92,850
Liabilities		31,260
Equity		61,590
Sales		174,511
Net income (loss)		5,193
Foreign [member] | POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	79,116	89,809
Liabilities	45,677	54,517
Equity	33,439	35,292
Sales	136,663	117,461
Net income (loss)	(992)	2,595
Foreign [member] | Zhejiang Huayou Posco Esm Co Ltd [Member]
Disclosure of investments in associates and joint ventures [Line Items]
Assets	305,740	129,618
Liabilities	57,932	72,965
Equity	247,808	56,653
Sales	45,771	28,488
Net income (loss)	₩ (3,176)	₩ (4,680)

Investments in Associates an_11

Investments in Associates and Joint ventures - Summary of Changes in Unrecognized Accumulated Losses of Equity Accounted Investees due to Discontinue Use of Equity Method (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	₩ 245,681
Increase (decrease)	(42,990)
Ending balance	202,691
New Songdo International City Development, LLC [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	199,483
Increase (decrease)	(64,988)
Ending balance	134,495
UITrans LRT Co., Ltd. [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	40,103
Increase (decrease)	3,769
Ending balance	43,872
Clean Iksan Co., Ltd. [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	797
Increase (decrease)	(94)
Ending balance	703
Hyochun CO., LTD [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	3,837
Increase (decrease)	559
Ending balance	4,396
KIRIN VIETNAM CO., LTD [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	100
Increase (decrease)	3
Ending balance	103
INKOTECH INC [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	612
Increase (decrease)	(72)
Ending balance	540
POSTO-Poggenamp Electrical Steel Pvt, Ltd. [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	301
Increase (decrease)	256
Ending balance	557
Gunggi Green Energy [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Beginning balance	448
Increase (decrease)	3,848
Ending balance	4,296
Link City PFV Inc. [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Increase (decrease)	5,452
Ending balance	5,452
Noeul Green Energy [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Increase (decrease)	1,886
Ending balance	1,886
Pohang E&E Co,. Ltd. [member]
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items]
Increase (decrease)	6,391
Ending balance	₩ 6,391

Joint Operations - Details of S

Joint Operations - Details of Significant Joint Operations (Detail)	12 Months Ended
	Dec. 31, 2022
Myanmar A-1/A-3 mine [member]
Disclosure of joint operations [line items]
Category of business	Mine development and gas production
Ownership (%)	51%
Location	Myanmar
Offshore Midstream [member]
Disclosure of joint operations [line items]
Category of business	Gas transportation facility
Ownership (%)	51%
Location	Myanmar
Greenhills Mine [member]
Disclosure of joint operations [line items]
Category of business	Mine development
Ownership (%)	20%
Location	Canada
Mt. Thorley J/V [member]
Disclosure of joint operations [line items]
Category of business	Mine development
Ownership (%)	20%
Location	Australia
POSMAC J/V [member]
Disclosure of joint operations [line items]
Category of business	Mine development
Ownership (%)	20%
Location	Australia
Samcheok Thermal Power Plant EPC Unit One Two Construction Work[Member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	49%
Location	Korea
Sinansan Line Double Track Train Private Investment project construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	36%
Location	Korea
Panama Metro Line 3 Project construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	20%
Location	Panama
2*600 MW Matarbari Ultra Super Critical Coal-Fired Power construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	67%
Location	Bangladesh
Yangsan Sasong 2nd Apartment Project (B5,6,7,9 Block) Construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	49%
Location	Korea
Songdo B5 Block officetel Project Construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	80%
Location	Korea
Particle Accelerator Facility Construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	55%
Location	Korea
Anyang Jinheung Apartment Construction work [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	45%
Location	Korea
Yongmun 1, 2, 3 District Housing Reconstruction Maintenance Project [member]
Disclosure of joint operations [line items]
Category of business	Construction
Ownership (%)	70%
Location	Korea

Investment Property, Net - Summ

Investment Property, Net - Summary of Investment Property (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about investment property [line items]
Investment property	₩ 1,074,031	₩ 1,086,077	₩ 994,781
Land [member]
Disclosure of detailed information about investment property [line items]
Investment property	308,523	332,308	279,397
Buildings [member]
Disclosure of detailed information about investment property [line items]
Investment property	593,505	584,549	559,584
Structures [member]
Disclosure of detailed information about investment property [line items]
Investment property	1,356	753	1,199
Right of use assets [member]
Disclosure of detailed information about investment property [line items]
Investment property	170,647	168,467	₩ 154,601
Gross amount [member]
Disclosure of detailed information about investment property [line items]
Investment property	1,360,159	1,351,739
Gross amount [member] | Land [member]
Disclosure of detailed information about investment property [line items]
Investment property	325,241	349,026
Gross amount [member] | Buildings [member]
Disclosure of detailed information about investment property [line items]
Investment property	825,183	803,156
Gross amount [member] | Structures [member]
Disclosure of detailed information about investment property [line items]
Investment property	3,569	3,213
Gross amount [member] | Right of use assets [member]
Disclosure of detailed information about investment property [line items]
Investment property	206,166	196,344
Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about investment property [line items]
Investment property	(286,128)	(265,662)
Accumulated depreciation, amortization and impairment [member] | Land [member]
Disclosure of detailed information about investment property [line items]
Investment property	(16,718)	(16,718)
Accumulated depreciation, amortization and impairment [member] | Buildings [member]
Disclosure of detailed information about investment property [line items]
Investment property	(231,678)	(218,607)
Accumulated depreciation, amortization and impairment [member] | Structures [member]
Disclosure of detailed information about investment property [line items]
Investment property	(2,213)	(2,460)
Accumulated depreciation, amortization and impairment [member] | Right of use assets [member]
Disclosure of detailed information about investment property [line items]
Investment property	₩ (35,519)	₩ (27,877)

Investment Property, Net - Addi

Investment Property, Net - Additional Information (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about investment property [line items]
Investment property	₩ 1,074,031	₩ 1,086,077	₩ 994,781
Fair value [member] | 6 Subsidiaries, including POSCO(Dalian) IT Center Development Co.,Ltd [member]
Disclosure of detailed information about investment property [line items]
Investment property	₩ 3,255,898

Investment Property, Net - Chan

Investment Property, Net - Changes in Carrying Amount of Investment Property (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about investment property [line items]
Beginning	₩ 1,086,077	₩ 994,781
Acquisitions	1,661	94,875
Disposals	(24,106)	(3,356)
Depreciation	(36,021)	(26,324)
Others	46,420	26,101
Ending	1,074,031	1,086,077
Land [member]
Disclosure of detailed information about investment property [line items]
Beginning	332,308	279,397
Acquisitions		83,497
Disposals	(2,921)	(1,092)
Others	(20,864)	(29,494)
Ending	308,523	332,308
Buildings [member]
Disclosure of detailed information about investment property [line items]
Beginning	584,549	559,584
Acquisitions	1,661	11,378
Disposals	(34)	(2,264)
Depreciation	(28,336)	(21,362)
Others	35,665	37,213
Ending	593,505	584,549
Structures [member]
Disclosure of detailed information about investment property [line items]
Beginning	753	1,199
Depreciation	(797)	(598)
Others	1,400	152
Ending	1,356	753
Right of use assets [member]
Disclosure of detailed information about investment property [line items]
Beginning	168,467	154,601
Disposals	(21,151)
Depreciation	(6,888)	(4,364)
Others	30,219	18,230
Ending	₩ 170,647	₩ 168,467

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	₩ 31,781,196	₩ 29,596,698	₩ 29,400,141
Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	79,126,651	74,244,164
Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(47,321,104)	(44,623,184)
Government grants	(24,351)	(24,282)
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	3,103,165	2,702,715	2,590,087
Land [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	3,103,218	2,702,768
Land [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(53)	(53)
Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	4,174,894	4,204,450	4,161,400
Buildings [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	10,102,634	9,802,539
Buildings [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(5,922,285)	(5,592,600)
Government grants	(5,455)	(5,489)
Structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	3,162,927	3,131,795	3,025,226
Structures [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	6,989,634	6,683,546
Structures [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(3,826,658)	(3,551,692)
Government grants	(49)	(59)
Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	16,422,830	16,420,156	16,857,307
Machinery and equipment [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	52,198,121	50,090,721
Machinery and equipment [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(35,767,810)	(33,663,244)
Government grants	(7,481)	(7,321)
Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	52,131	46,030	37,156
Vehicles [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	337,932	324,073
Vehicles [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(284,897)	(277,437)
Government grants	(904)	(606)
Tools [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	90,961	77,795	60,301
Tools [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	497,173	453,297
Tools [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(405,844)	(375,212)
Government grants	(368)	(290)
Furniture and fixtures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	173,345	166,162	127,459
Furniture and fixtures [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	796,405	752,314
Furniture and fixtures [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(622,944)	(585,881)
Government grants	(116)	(271)
Lease assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	921,198	867,746
Lease assets [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	1,299,779	1,288,639
Lease assets [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(378,581)	(420,893)
Bearer plants [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	141,720	154,682	149,965
Bearer plants [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	180,486	185,234
Bearer plants [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(38,766)	(30,552)
Construction-in-progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	3,538,025	1,825,167	₩ 1,617,540
Construction-in-progress [member] | Gross amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	3,621,269	1,961,033
Construction-in-progress [member] | Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(73,266)	(125,620)
Government grants	₩ (9,978)	₩ (10,246)

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Changes in Carrying Amount of Property, Plant and Equipment (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	₩ 29,596,698	₩ 29,400,141
Acquisitions	5,110,373	3,438,584
Business Combination	534,101
Disposals	(72,780)	(98,843)
Depreciation	(3,168,721)	(3,109,021)
Impairment loss	(213,183)	(302,163)
Others	(5,292)	268,000
Ending	31,781,196	29,596,698
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	2,702,715	2,590,087
Acquisitions	89,357	66,015
Business Combination	248,858
Disposals	(1,247)	(117)
Depreciation	0
Impairment loss	0	5,670
Others	63,482	41,060
Ending	3,103,165	2,702,715
Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	4,204,450	4,161,400
Acquisitions	127,837	22,559
Business Combination	37,741
Disposals	(9,957)	(4,001)
Depreciation	(317,350)	(316,999)
Impairment loss	(11,230)	(32,863)
Others	143,403	374,354
Ending	4,174,894	4,204,450
Structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	3,131,795	3,025,226
Acquisitions	82,130	15,728
Business Combination	38,535
Disposals	(3,274)	(15,727)
Depreciation	(253,996)	(233,370)
Impairment loss	(5,084)	(4,900)
Others	172,821	344,838
Ending	3,162,927	3,131,795
Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	16,420,156	16,857,307
Acquisitions	597,172	206,564
Business Combination	1,216
Disposals	(33,511)	(31,769)
Depreciation	(2,303,917)	(2,283,704)
Impairment loss	(184,706)	(77,173)
Others	1,926,420	1,748,931
Ending	16,422,830	16,420,156
Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	46,030	37,156
Acquisitions	15,592	14,896
Business Combination	902
Disposals	(1,017)	(832)
Depreciation	(18,717)	(15,242)
Impairment loss	(123)	(58)
Others	9,464	10,110
Ending	52,131	46,030
Tools [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	77,795	60,301
Acquisitions	32,386	21,802
Business Combination	203
Disposals	(187)	(782)
Depreciation	(37,170)	(30,864)
Impairment loss	(351)	(69)
Others	18,285	27,407
Ending	90,961	77,795
Furniture and fixtures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	166,162	127,459
Acquisitions	33,936	28,178
Business Combination	1,963
Disposals	(1,175)	(1,630)
Depreciation	(59,359)	(47,135)
Impairment loss	(1,990)	(667)
Others	33,808	59,957
Ending	173,345	166,162
Finance lease assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	867,746	773,700
Acquisitions	184,260	224,667
Business Combination	193,572
Disposals	(22,029)	(8,320)
Depreciation	(168,521)	(172,443)
Impairment loss	0	(1,547)
Others	(133,830)	51,689
Ending	921,198	867,746
Construction-in-progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	1,825,167	1,617,540
Acquisitions	3,947,703	2,838,175
Business Combination	11,111
Disposals	(383)	(10,789)
Depreciation	0
Impairment loss	(9,699)	(190,556)
Others	(2,235,874)	(2,429,203)
Ending	3,538,025	1,825,167
Bearer plants [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning	154,682	149,965
Acquisitions	0
Business Combination	0
Disposals	0	(24,876)
Depreciation	(9,691)	(9,264)
Impairment loss	0
Others	(3,271)	38,857
Ending	₩ 141,720	₩ 154,682

Property, Plant and Equipment_5

Property, Plant and Equipment, Net - Changes in Carrying Amount of Property, Plant and Equipment (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss on property plant and equipment	₩ 213,183	₩ 311,520	₩ 27,040
Synthetic natural gas facility [member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss on property plant and equipment		217,564
Naengcheon stream [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss on property plant and equipment	₩ 207,072
PKXposco daewoo australia holdings pty ltd [member] | Non operating party [member] | Narrabari coal mine [member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss on property plant and equipment		₩ 27,672

Property, Plant and Equipment_6

Property, Plant and Equipment, Net - Borrowing Costs Capitalized and Capitalized Interest Rate (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]
Expenditure	₩ 4,927,586	₩ 3,068,591	₩ 3,154,412
Borrowing costs capitalized	44,264	31,295	29,653
Weighted average [member]
Disclosure of detailed information about property, plant and equipment [line items]
Expenditure	₩ 1,657,425	₩ 1,230,145	₩ 932,298
Bottom of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Capitalization rate (%)	2.39%	2.25%	3.14%
Top of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Capitalization rate (%)	3.85%	3.16%	3.18%

Property, Plant and Equipment_7

Property, Plant and Equipment, Net - Property, Plant and Equipment and Investment Property Pledged as Collateral (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment and investment property pledged as collateral	₩ 4,734,383	₩ 4,818,256
Land [member] | Korean Development Bank and others [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment and investment property pledged as collateral	1,161,696	933,560
Buildings and structures [member] | Korean Development Bank and others [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment and investment property pledged as collateral	1,449,066	1,598,040
Machinery and equipment [member] | Korean Development Bank and others [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment and investment property pledged as collateral	₩ 2,123,621	₩ 2,286,656

Property, Plant and Equipment_8

Property, Plant and Equipment, Net - Property, Plant and Equipment and Investment Property Pledged as Collateral (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Assets pledged as collateral	₩ 4,734,383	₩ 4,818,256
Investment Property And Other Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Assets pledged as collateral	₩ 6,012,568

Property, Plant and Equipment_9

Property, Plant and Equipment, Net - Summary of Changes in Right-of-use Assets Property Plant and Equipment (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	₩ 1,036,213
Right of use assets Acquisitions	184,260	₩ 224,667
Business Combination	193,572
Depreciation	(175,410)	(176,807)
Others	(146,789)	60,052
Ending balance	1,091,846	1,036,213
Land [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	391,446
Right of use assets Acquisitions	18,077	14,161
Business Combination	0
Depreciation	(16,843)	(14,191)
Others	(24,513)	19,757
Ending balance	368,167	391,446
Buildings and structures [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	143,854
Right of use assets Acquisitions	74,454	30,912
Business Combination	6,714
Depreciation	(50,397)	(61,261)
Others	(10,977)	2,443
Ending balance	163,648	143,854
Machinery and equipment [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	256,205
Right of use assets Acquisitions	43,088	13,543
Business Combination	175,795
Depreciation	(56,333)	(41,721)
Others	(99,734)	45,202
Ending balance	319,021	256,205
Vehicles [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	14,753
Right of use assets Acquisitions	12,467	12,159
Business Combination	98
Depreciation	(12,015)	(8,657)
Others	3,349	(205)
Ending balance	18,652	14,753
Ships [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	210,056
Right of use assets Acquisitions	23,793	120,217
Business Combination	0
Depreciation	(18,355)	(16,716)
Others	2	0
Ending balance	215,496	210,056
Other assets [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	19,899
Right of use assets Acquisitions	12,381	33,675
Business Combination	10,965
Depreciation	(21,467)	(34,261)
Others	(14,916)	(7,145)
Ending balance	6,862	19,899
Date of initial application IFRS-16 [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	1,036,213	928,301
Ending balance		1,036,213
Date of initial application IFRS-16 [member] | Land [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	391,446	371,719
Ending balance		391,446
Date of initial application IFRS-16 [member] | Buildings and structures [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	143,854	171,760
Ending balance		143,854
Date of initial application IFRS-16 [member] | Machinery and equipment [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	256,205	239,181
Ending balance		256,205
Date of initial application IFRS-16 [member] | Vehicles [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	14,753	11,456
Ending balance		14,753
Date of initial application IFRS-16 [member] | Ships [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	210,056	106,555
Ending balance		210,056
Date of initial application IFRS-16 [member] | Other assets [member]
Disclosure details of changes in right-of-use assets property plant and equipment [line items]
Beginning Balance	₩ 19,899	27,630
Ending balance		₩ 19,899

Property, Plant and Equipmen_10

Property, Plant and Equipment, Net - Summary of Lease Expense Recognised in the Income Statement (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Text block [abstract]
Interest on lease liabilities	₩ 34,936	₩ 32,331	₩ 36,373
Expenses related to short-term leases	29,931	20,885	18,809
Expenses related to leases of low-value assets	17,877	18,577	14,375
Total	₩ 82,744	₩ 71,793	₩ 69,557

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets, Net - Summary of Goodwill and Other Intangible Assets (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	₩ 4,838,451	₩ 4,166,309	₩ 4,449,432
Goodwill [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	442,487	735,969	903,893
Intellectual property rights [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	3,136,072	2,225,808	2,170,738
Membership [Member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	132,942	142,370	138,703
Development costs [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	116,171	153,973	227,111
Port facilities usage rights [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	197,211	216,021	236,272
Exploration and evaluation assets [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	100,991	61,957	57,140
Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	241,311	285,720	330,247
Other intangible assets [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	392,296	344,491	₩ 385,328
Intangible assets under development [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	78,970
Gross amount [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	10,554,437	9,368,137
Gross amount [member] | Goodwill [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	1,723,974	1,648,119
Gross amount [member] | Intellectual property rights [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	4,944,973	3,987,689
Gross amount [member] | Membership [Member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	135,905	146,043
Gross amount [member] | Development costs [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	687,437	656,712
Gross amount [member] | Port facilities usage rights [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	681,530	685,540
Gross amount [member] | Exploration and evaluation assets [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	260,548	280,092
Gross amount [member] | Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	865,691	865,622
Gross amount [member] | Other intangible assets [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	1,175,409	1,098,320
Gross amount [member] | Intangible assets under development [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	78,970
Accumulated depreciation, amortization and impairment [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(5,715,961)	(5,201,789)
Government grants	(25)	(39)
Accumulated depreciation, amortization and impairment [member] | Goodwill [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(1,281,487)	(912,150)
Accumulated depreciation, amortization and impairment [member] | Intellectual property rights [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(1,808,901)	(1,761,881)
Accumulated depreciation, amortization and impairment [member] | Membership [Member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(2,963)	(3,673)
Accumulated depreciation, amortization and impairment [member] | Development costs [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(571,266)	(502,739)
Accumulated depreciation, amortization and impairment [member] | Port facilities usage rights [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(484,319)	(469,519)
Accumulated depreciation, amortization and impairment [member] | Exploration and evaluation assets [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(159,557)	(218,135)
Accumulated depreciation, amortization and impairment [member] | Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(624,380)	(579,902)
Accumulated depreciation, amortization and impairment [member] | Other intangible assets [member]
Disclosure of detailed information about intangible assets [line items]
Goodwill and other intangible assets	(783,088)	(753,790)
Government grants	₩ (25)	₩ (39)

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets, Net - Changes in Carrying Amount of Goodwill and Other Intangible Assets (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	₩ 4,166,309	₩ 4,449,432
Acquisitions	495,787	390,008
Business combination	1,103,683
Disposals	(2,822)	(19,590)
Amortization	(488,835)	(444,100)
Impairment loss	(369,382)	(223,460)
Others	(66,289)	14,019
Ending	4,838,451	4,166,309
Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	735,969	903,893
Acquisitions	0	17,804
Business combination	66,206
Disposals	0	0
Amortization	0	0
Impairment loss	(369,337)	(189,167)
Others	9,649	3,439
Ending	442,487	735,969
Intellectual property rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	2,225,808	2,170,738
Acquisitions	354,179	281,544
Business combination	912,971
Disposals	(582)	(574)
Amortization	(326,494)	(271,931)
Impairment loss	379	(20,005)
Others	(30,189)	66,036
Ending	3,136,072	2,225,808
Membership [Member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	142,370	138,703
Acquisitions	9,230	7,457
Business combination	0
Disposals	(2,082)	(4,198)
Amortization	(145)	(137)
Impairment loss	854	145
Others	(17,285)	400
Ending	132,942	142,370
Development costs [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	153,973	227,111
Acquisitions	1,800	11,301
Business combination	0
Disposals	(13)	0
Amortization	(67,446)	(72,294)
Impairment loss	(1,046)	(4,027)
Others	28,903	(8,118)
Ending	116,171	153,973
Port facilities usage rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	216,021	236,272
Acquisitions	0	0
Business combination	0
Disposals	0	0
Amortization	(14,800)	(20,581)
Impairment loss	0	0
Others	(4,010)	330
Ending	197,211	216,021
Exploration and evaluation assets [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	61,957	57,140
Acquisitions	24,583	3,649
Business combination	21,266
Disposals	0	0
Amortization	0	0
Impairment loss	0	(374)
Others	(6,815)	1,542
Ending	100,991	61,957
Customer relationships [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	285,720	330,247
Acquisitions	0	0
Business combination	0
Disposals	0	0
Amortization	(44,478)	(44,478)
Impairment loss	0	0
Others	69	(49)
Ending	241,311	285,720
Other intangible assets [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning	344,491	385,328
Acquisitions	99,388	68,253
Business combination	26,649
Disposals	(145)	(14,818)
Amortization	(35,472)	(34,679)
Impairment loss	(232)	(10,032)
Others	(42,383)	(49,561)
Ending	392,296	₩ 344,491
Intangible assets under development [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Acquisitions	6,607
Business combination	76,591
Others	(4,228)
Ending	₩ 78,970

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets, Net - Allocation of Goodwill to Individually Operating Entities Which are Determined to be CGUs (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩) Cash_Generating_Units	Dec. 31, 2021 KRW (₩) Cash_Generating_Units
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	20	17
Goodwill	₩ 442,487	₩ 735,969
Steel [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	10	7
Green Tranding Infrastructure [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	3	3
Construction [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	2	2
Others [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	0	5
POSCO VST Co., Ltd. [member] | Steel [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	POSCO VST CO., LTD.
Goodwill	₩ 36,955	₩ 36,955
Others [member] | Steel [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	Others
Goodwill	₩ 13,741	12,542
Others [member] | Other reportable segment [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	Others
Goodwill	₩ 0	₩ 1,213
POSCO INTERNATIONAL CORPORATION [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Discount rate	8.97%	8.14%
Terminal growth rate	1.70%	2%
Impairment loss on goodwill	₩ 337,953
Discount rate increase	0.50%
Terminal growth rate decrease	0.50%
Value in use decrease due to decrease in terminal growth rate	3.93%
Value in use decrease due to increase in discount rate, amount	₩ 193,420
Value in use decrease due to decrease in terminal growth rate, amount	₩ 131,208
Pre tax discount rate	11.54%	10.56%
POSCO INTERNATIONAL CORPORATION [Member] | Green Tranding Infrastructure [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	POSCO INTERNATIONAL Corporation(*1)
Goodwill	₩ 240,092	₩ 578,046
GRAIN TERMINAL HOLDING PTE. LTD
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Value in use decrease due to increase in discount rate	5.79%
GRAIN TERMINAL HOLDING PTE. LTD | Green Tranding Infrastructure [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	GRAIN TERMINAL HOLDING PTE. LTD.
Goodwill	₩ 0	21,516
PT. Bio lnti Agrindo [member] | Green Tranding Infrastructure [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	PT. Bio Inti Agrindo
Goodwill	₩ 7,270	7,468
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Construction [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	POSCO ENGINEERING & CONSTRUCTION CO., LTD.
Goodwill	₩ 24,868	24,868
POSCO Center Beijing [member] | Steel [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	POSCO Center Beijing
Goodwill	₩ 173	178
POSCO ENERGY CO., LTD. [member] | Energy [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	2
CGUs	POSCO ENERGY CO., LTD.
Goodwill	₩ 26,471	26,471
POSCO O M CO LTD [Member] | Construction [member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	POSCO O&M Co., Ltd
Goodwill	₩ 35,728	0
Shinhan Green Energy Co Ltd [Member] | Energy [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	Shinhan Green Energy Co Ltd
Goodwill	₩ 17,804	17,804
POSCO CHEMICAL CO., LTD [Member] | Materials [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total number of CGUs | Cash_Generating_Units	3
CGUs	POSCO CHEMICAL CO., LTD
Goodwill	₩ 8,800	8,800
Posco Silicon Solution Co., Ltd [Member] | Materials [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	Posco Silicon Solution Co., Ltd
Goodwill	₩ 30,477	0
Zhangjiagang Pohang Refractions Co., Ltd. [Member] | Materials [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
CGUs	Zhangjiagang Pohang Refractions Co., Ltd.
Goodwill	₩ 108	₩ 108

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets, Net - Changes in Carrying Amount of Goodwill and Other Intangible Assets (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment loss recognised in profit or loss, intangible assets other than goodwill	₩ 370,663	₩ 224,328	₩ 197,776
Paid In Emission Rights [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment loss recognised in profit or loss, intangible assets other than goodwill		7,180
Changes In The Quality Of Bituminous Coal And Changes In Production Plans At Narrabri Coal Mine [Member] | POSCO INTERNATIONAL CORPORATION [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment loss recognised in profit or loss, intangible assets other than goodwill		184,770
Changes In The Quality Of Bituminous Coal And Changes In Production Plans At Narrabri Coal Mine [Member] | POSCO INTERNATIONAL AUSTRALIA HOLDINGS PTY. LTD. [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment loss recognised in profit or loss, intangible assets other than goodwill		₩ 20,006

Other Assets - Summary of Other

Other Assets - Summary of Other Current Assets and Other Non-Current Assets (Detail) - KRW (₩) ₩ in Millions		Dec. 31, 2022	Dec. 31, 2021
Current
Advance payments		₩ 782,439	₩ 564,196
Prepaid expenses		263,536	274,023
Firm commitment asset		9,674	11,323
Others		20,290	65,816
Other current assets		1,075,939	915,358
Non-current
Long-term advance payments		23,429	47,752
Long-term prepaid expenses		53,803	76,739
Others	[1]	90,141	74,116
Other non-current assets		₩ 167,373	₩ 198,607
[1]As of December 31, 2021 and 2022, the Company recognized tax assets amounting to ￦ ￦

Other Assets - Summary of Oth_2

Other Assets - Summary of Other Current Assets and Other Non-Current Assets (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Subclassifications of assets, liabilities and equities [abstract]
Tax assets	₩ 6,764	₩ 4,722

Borrowings - Short-term Borrowi

Borrowings - Short-term Borrowings and Current Portion of Long-term Borrowings (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Short-term borrowings	₩ 6,833,120	₩ 5,110,424
Current portion of debentures	5,082,874	3,719,643
Current borrowings and current portion of non-current borrowings	11,915,994	8,830,067
JP Morgan and others [member]
Disclosure of detailed information about borrowings [line items]
Short-term borrowings	197,718	118,558
HSBC and others [member]
Disclosure of detailed information about borrowings [line items]
Short-term borrowings	₩ 6,635,402	4,991,866
Bottom of range [member] | Short-term borrowings [member] | JP Morgan and others [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	March, 2022
Maturity date	January, 2023
Interest rate (%)	1.20%
Bottom of range [member] | Short-term borrowings [member] | HSBC and others [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	January, 2022
Maturity date	January, 2023
Interest rate (%)	0.22%
Bottom of range [member] | Current portion of long-term liabilities [member] | Export-Import Bank of Korea and others [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	November, 2004
Maturity date	February, 2023
Interest rate (%)	0.75%
Bottom of range [member] | Current portion of long-term liabilities [member] | Merrill Lynch and Others [Member]
Disclosure of detailed information about borrowings [line items]
Issuance date	October, 2013
Maturity date	January, 2023
Interest rate (%)	1.44%
Top of range [member] | Short-term borrowings [member] | JP Morgan and others [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	December, 2022
Maturity date	December, 2023
Interest rate (%)	7.38%
Top of range [member] | Short-term borrowings [member] | HSBC and others [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	December, 2022
Maturity date	December, 2023
Interest rate (%)	18.20%
Top of range [member] | Current portion of long-term liabilities [member] | Export-Import Bank of Korea and others [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	October, 2022
Maturity date	December, 2023
Interest rate (%)	16.50%
Top of range [member] | Current portion of long-term liabilities [member] | Merrill Lynch and Others [Member]
Disclosure of detailed information about borrowings [line items]
Issuance date	September, 2021
Maturity date	October, 2023
Interest rate (%)	5.99%
Gross amount [member] | Export-Import Bank of Korea and others [member]
Disclosure of detailed information about borrowings [line items]
Current portion of debentures	₩ 2,302,592	992,154
Gross amount [member] | Merrill Lynch and Others [Member]
Disclosure of detailed information about borrowings [line items]
Current portion of debentures	2,782,049	2,731,321
Discount on debentures [member]
Disclosure of detailed information about borrowings [line items]
Current portion of debentures	₩ (1,767)	₩ (3,832)

Borrowings - Long-term Borrowin

Borrowings - Long-term Borrowings, Excluding Current Portion (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Long-term borrowings, excluding current portion	₩ 12,389,668	₩ 12,911,149
Export-Import Bank of Korea and others [member] | Long-term borrowings [member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	September, 2001
Maturity date	July, 2024
Interest rate (%)	0.19%
Export-Import Bank of Korea and others [member] | Long-term borrowings [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	November, 2022
Maturity date	March, 2040
Interest rate (%)	8.50%
KB Securities and others [member] | Long-term borrowings [member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	July, 2015
Maturity date	January, 2024
Interest rate (%)	0.50%
KB Securities and others [member] | Long-term borrowings [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	October, 2022
Maturity date	May, 2032
Interest rate (%)	4.60%
Foreign Currency Exchangeable Bonds [Member] | Long-term borrowings [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Issuance date	September, 2021
Maturity date	September, 2026
Gross amount [member] | Export-Import Bank of Korea and others [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings, excluding current portion	₩ 2,718,212	3,841,375
Gross amount [member] | KB Securities and others [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings, excluding current portion	8,351,006	7,671,755
Present value discount [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings, excluding current portion	(8,951)	(12,530)
Discount on debentures [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings, excluding current portion	(28,893)	(24,644)
Exchangeable Bonds [Member] | Foreign Currency Exchangeable Bonds [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current bonds issued	₩ 1,358,294	₩ 1,435,193

Borrowings - Schedule Disclosur

Borrowings - Schedule Disclosure of Detailed Information about Exchangeable Bonds (Detail) - 12 months ended Dec. 31, 2022 - Foreign Currency Exchangeable Bonds [Member] € in Millions	EUR (€)	$ / shares
Disclosure of detailed information about borrowings [line items]
Notional amount | €	€ 1,065,900,000
Borrowings, interest rate	0.78%
Exchangeable bonds exchange rate	100%
Exchangeable bonds exchange price | $ / shares		$ 463,438
Exchangeable Bonds Exchange Period	From October 12, 2021 to August 22, 2026
Put option exercisable option date by bondholder from issuing date	Sep. 01, 2024
Put option exercisable option period by bondholder from issuing date	3 years
Put option by bondholders trigger number of consecutive trading days In which shares were suspended for trading	30 days
Call option by the issuer trigger percentage of share price over exchange price	130%
Number of trading days for determining share price	20 days
Number of consecutive trading days for determining share price	30 days
Call option by the issuer trigger clean up call percentage	10%

Borrowings - Summary of Assets

Borrowings - Summary of Assets Pledges as Collateral (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Disclosure Of Assets Pledged As Collateral [line items]
Pledged amount	₩ 6,276,374
Book value [member]
Disclosure Of Assets Pledged As Collateral [line items]
Assets	4,898,747
Property, plant and equipment including investment property [member] | Korean Development Bank and others [member]
Disclosure Of Assets Pledged As Collateral [line items]
Pledged amount	6,044,317
Property, plant and equipment including investment property [member] | Book value [member] | Korean Development Bank and others [member]
Disclosure Of Assets Pledged As Collateral [line items]
Assets	4,666,691
Trade accounts and notes receivables, net [member] | Korean Development Bank and others [member]
Disclosure Of Assets Pledged As Collateral [line items]
Pledged amount	215,133
Trade accounts and notes receivables, net [member] | Book value [member] | Korean Development Bank and others [member]
Disclosure Of Assets Pledged As Collateral [line items]
Assets	215,133
Financial Instruments [Member] | Woori Bank and others [member]
Disclosure Of Assets Pledged As Collateral [line items]
Pledged amount	16,924
Financial Instruments [Member] | Book value [member] | Woori Bank and others [member]
Disclosure Of Assets Pledged As Collateral [line items]
Assets	₩ 16,923

Other Payables - Summary of Oth

Other Payables - Summary of Other Payables (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current
Accounts payable	₩ 1,423,402	₩ 1,034,823
Accrued expenses	981,609	835,226
Dividend payable	4,371	4,046
Lease liabilities	149,384	181,774
Withholdings	307,102	133,492
Other payables, current	2,865,868	2,189,361
Non-current
Accounts payable	15,713	17,312
Accrued expenses	8,102	8,760
Lease liabilities	674,098	596,240
Long-term withholdings	92,489	56,697
Other payables, non-current	₩ 790,402	₩ 679,009

Other Financial Liabilities - S

Other Financial Liabilities - Summary of Other Financial Liabilities (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current
Derivatives liabilities	₩ 95,157	₩ 91,739
Financial guarantee liabilities	11,370	19,902
Other financial liabilities, current	106,527	111,641
Non-current
Derivatives liabilities	79,984	18,300
Financial guarantee liabilities	7,068	5,696
Other financial liabilities, non-current	₩ 87,052	₩ 23,996

Provisions - Summary of Provisi

Provisions - Summary of Provisions (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of other provisions [line items]
Current	₩ 515,988	₩ 399,984
Non-current	579,918	589,092
Provision for bonus payments [member]
Disclosure of other provisions [line items]
Current	136,275	93,502
Non-current	33,157	45,031
Provision for construction warranties [member]
Disclosure of other provisions [line items]
Current	35,702	14,519
Non-current	170,272	222,141
Provision for legal contingencies and claims [member]
Disclosure of other provisions [line items]
Current	46,823	24,441
Non-current	59,518	69,050
Provision for the restoration [member]
Disclosure of other provisions [line items]
Current	6,049	5,918
Non-current	185,097	153,613
Others [member]
Disclosure of other provisions [line items]
Current	291,139	261,604
Non-current	₩ 131,874	₩ 99,257

Provisions - Summary of Provi_2

Provisions - Summary of Provisions (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of other provisions [line items]
Other provisions	₩ 1,095,906	₩ 989,076	₩ 966,242
Other provisions current	515,988	399,984
Others [member]
Disclosure of other provisions [line items]
Other provisions	423,013	360,861	389,999
Other provisions current	291,139	261,604
Others [member] | POSCO ENERGY and Korea Fuel Cell [member]
Disclosure of other provisions [line items]
Other provisions	97,928	80,727
Lawsuits provision [member]
Disclosure of other provisions [line items]
Other provisions	52,530	61,911
Emission of greenhouse gases [member]
Disclosure of other provisions [line items]
Other provisions current	14,178	84,364
Provision for decommissioning, restoration and rehabilitation costs [member]
Disclosure of other provisions [line items]
Other provisions	191,146	159,531	₩ 139,745
Other provisions current	6,049	5,918
Provision for decommissioning, restoration and rehabilitation costs [member] | POSCO Canada Ltd. [member]
Disclosure of other provisions [line items]
Other provisions	52,008
New And Renewable Energy [Member]
Disclosure of other provisions [line items]
Other provisions	123,073	₩ 100,551
Land [member] | Gangneung province [member]
Disclosure of other provisions [line items]
Other provisions	₩ 22,041
Land [member] | Gangneung province [member] | Bottom of range [member]
Disclosure of other provisions [line items]
Discount rates	5.02%
Land [member] | Gangneung province [member] | Top of range [member]
Disclosure of other provisions [line items]
Discount rates	5.10%
Land [member] | Pohang work [member] | Bottom of range [member]
Disclosure of other provisions [line items]
Discount rates	5.02%
Land [member] | Pohang work [member] | Top of range [member]
Disclosure of other provisions [line items]
Discount rates	5.10%

Provisions - Changes in Provisi

Provisions - Changes in Provisions (Detail) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Disclosure of other provisions [line items]
Beginning		₩ 989,076	₩ 966,242
Increase		639,210	627,546
Utilization		(491,273)	(426,311)
Reversal		(84,791)	(171,562)
Others	[1]	43,684	(6,839)
Ending		1,095,906	989,076
Provision for bonus payments [member]
Disclosure of other provisions [line items]
Beginning		138,533	121,951
Increase		176,677	160,893
Utilization		(137,092)	(138,003)
Reversal		(5,813)	(4,989)
Others	[1]	(2,873)	(1,319)
Ending		169,432	138,533
Provision for construction warranties [member]
Disclosure of other provisions [line items]
Beginning		236,660	227,097
Increase		52,438	79,518
Utilization		(73,853)	(67,196)
Reversal		(8,287)	(3,080)
Others	[1]	(984)	321
Ending		205,974	236,660
Provision for legal contingencies and claims [member]
Disclosure of other provisions [line items]
Beginning		93,491	87,450
Increase		47,344	66,395
Utilization		(33,175)	(28,400)
Reversal		(8,654)	(32,731)
Others	[1]	7,335	777
Ending		106,341	93,491
Provisions for the restoration [member]
Disclosure of other provisions [line items]
Beginning		159,531	139,745
Increase		45,130	29,456
Utilization		(43,168)	(7,646)
Reversal		(1,299)	(11,129)
Others	[1]	30,952	9,105
Ending		191,146	159,531
Others [member]
Disclosure of other provisions [line items]
Beginning		360,861	389,999
Increase		317,621	291,284
Utilization		(203,985)	(185,066)
Reversal		(60,738)	(119,633)
Others	[1]	9,254	(15,723)
Ending		₩ 423,013	₩ 360,861
[1]Includes adjustments of foreign currency translation differences and others.

Employee Benefits - Expense Rel

Employee Benefits - Expense Related to Post-employment Benefit Plans under Defined Contribution Plans (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Expense related to post-employment benefit plans under defined contribution plans	₩ 62,467	₩ 54,527	₩ 50,694

Employee Benefits - Amounts Rec

Employee Benefits - Amounts Recognized in Relation to Net Defined Benefit Liabilities in Statements of Financial Position (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of defined benefit plans [abstract]
Present value of funded obligations	₩ 2,200,127	₩ 2,401,261
Fair value of plan assets	(2,703,639)	(2,620,046)
Present value of non-funded obligations	20,560	13,770
Net defined benefit liabilities	₩ (482,952)	₩ (205,015)

Employee Benefits - Amounts R_2

Employee Benefits - Amounts Recognized in Relation to Net Defined Benefit Liabilities in Statements of Financial Position (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of defined benefit plans [abstract]
Net defined benefit assets	₩ 520,659	₩ 255,858

Employee Benefits - Changes in

Employee Benefits - Changes in Present Value of Defined Benefit Obligations (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of net defined benefit liability (asset) [line items]
Current service costs	₩ 235,007	₩ 243,029	₩ 245,047
Interest	(6,397)	538	3,277
Defined benefit obligations [member]
Disclosure of net defined benefit liability (asset) [line items]
Beginning of year	2,415,031	2,453,353
Current service costs	235,007	243,029
Interest	71,348	52,118
Remeasurements :	(192,339)	(78,888)
- Loss (gain) from change in financial assumptions	(381,800)	(159,154)
- Loss (gain) from change in demographic assumptions	(621)	1,512
- Loss (gain) from change in others	190,082	78,754
Benefits paid	(300,353)	(253,208)
Others	(8,007)	(1,373)
End of year	₩ 2,220,687	₩ 2,415,031	₩ 2,453,353

Employee Benefits - Changes i_2

Employee Benefits - Changes in Fair Value of Plan Assets (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of net defined benefit liability (asset) [line items]
Interest on plan assets	₩ (6,397)	₩ 538	₩ 3,277
Plan assets [member]
Disclosure of net defined benefit liability (asset) [line items]
Beginning of year	2,620,046	2,397,717
Interest on plan assets	77,745	51,580
Remeasurement of plan assets	(57,335)	(9,529)
Contributions to plan assets	346,773	417,486
Benefits paid	(287,312)	(230,938)
Others	3,722	(6,270)
End of year	₩ 2,703,639	₩ 2,620,046	₩ 2,397,717

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
Disclosure of net defined benefit liability (asset) [abstract]
Estimated contribution to the defined benefit plan assets	₩ 346,757

Employee Benefits - Fair Value

Employee Benefits - Fair Value of Plan Assets (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of fair value of plan assets [abstract]
Equity instruments	₩ 5,949	₩ 23,980
Debt instruments	758,250	811,498
Deposits	1,813,863	1,724,245
Others	125,577	60,323
Fair value of plan assets	₩ 2,703,639	₩ 2,620,046

Employee Benefits - Amounts R_3

Employee Benefits - Amounts Recognized in Consolidated Statements of Comprehensive Income (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [line items]
Current service costs	₩ 235,007	₩ 243,029	₩ 245,047
Net interest costs	(6,397)	538	3,277
Amounts recognized in consolidated statements of comprehensive income	228,610	243,567	248,324
Cost of sales [member]
Disclosure of defined benefit plans [line items]
Amounts recognized in consolidated statements of comprehensive income	156,576	166,734	177,223
Selling and administrative expenses [member]
Disclosure of defined benefit plans [line items]
Amounts recognized in consolidated statements of comprehensive income	71,060	76,265	69,256
Others [member]
Disclosure of defined benefit plans [line items]
Amounts recognized in consolidated statements of comprehensive income	₩ 974	₩ 568	₩ 1,845

Employee Benefits - Amounts R_4

Employee Benefits - Amounts Recognized in Consolidated Statements of Comprehensive Income (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Actual return on plan assets	₩ 20,410	₩ 42,051	₩ 43,608

Employee Benefits - Accumulated

Employee Benefits - Accumulated Actuarial Gains (Losses), Net of Tax Recognized in Other Comprehensive Income (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Beginning	₩ (502,066)	₩ (553,221)	₩ (589,796)
Current actuarial gains (losses)	105,769	51,155	36,575
Ending	₩ (396,297)	₩ (502,066)	₩ (553,221)

Employee Benefits - Principal A

Employee Benefits - Principal Actuarial Assumptions (Detail)	Dec. 31, 2022	Dec. 31, 2021
Bottom of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	2%	1.25%
Expected future increase in salaries	1.50%	1.50%
Top of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	7.60%	7.84%
Expected future increase in salaries	12.20%	11.50%

Employee Benefits - Changes to

Employee Benefits - Changes to Defined Benefit Obligation Due to Reasonably Possible Changes to one of the Relevant Actuarial Assumptions (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Affect on defined benefit obligation due to reasonably possible 1% increase in actuarial assumption	₩ (129,873)
Affect on defined benefit obligation due to reasonably possible 1% decrease in actuarial assumption	₩ 146,641
Percentage of reasonably possible 1% decrease in actuarial assumption	6.60%
Percentage of reasonably possible 1% decrease in actuarial assumption	(5.80%)
Expected future increase in salaries [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Affect on defined benefit obligation due to reasonably possible 1% increase in actuarial assumption	₩ 146,953
Affect on defined benefit obligation due to reasonably possible 1% decrease in actuarial assumption	₩ (132,348)
Percentage of reasonably possible 1% decrease in actuarial assumption	6.60%
Percentage of reasonably possible 1% decrease in actuarial assumption	(6.00%)

Employee Benefits - Maturity of

Employee Benefits - Maturity of Expected Benefit Payments (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Disclosure of defined benefit plans [line items]
Benefits to be paid	₩ 3,321,217
Less than 1 year [member]
Disclosure of defined benefit plans [line items]
Benefits to be paid	328,477
1 year - 5 years [member]
Disclosure of defined benefit plans [line items]
Benefits to be paid	832,597
5 years - 10 years [member]
Disclosure of defined benefit plans [line items]
Benefits to be paid	650,418
10 years - 20 years [member]
Disclosure of defined benefit plans [line items]
Benefits to be paid	1,087,836
After 20 years [member]
Disclosure of defined benefit plans [line items]
Benefits to be paid	₩ 421,889

Other Liabilities - Summary of

Other Liabilities - Summary of Other Liabilities (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current
Due to customers for contract work	₩ 756,316	₩ 813,207
Advances received	787,477	845,652
Unearned revenue	62,030	106,574
Withholdings	369,067	340,107
Firm commitment liability	7,566	11,852
Others	24,375	14,844
Other current liabilities	2,006,831	2,132,236
Non-current
Advances received	433,958	730,505
Unearned revenue	22,203	27,908
Others	129,673	28,583
Other non-current liabilities	₩ 585,834	₩ 786,996

Other Liabilities - Summary o_2

Other Liabilities - Summary of Other Liabilities (Parenthetical) (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Senex Energy Limited [Member]
Other Liabilities [Line Items]
Business combination liabilities assumed	₩ 71,248

Financial Instruments - Summary

Financial Instruments - Summary of Carrying Amount and Fair Values of Financial Assets and Financial Liabilities by Fair value (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Cash and cash Equivalents	₩ 8,053,108	₩ 4,775,166
Borrowings	6,833,120	5,110,424
Borrowings	24,305,662	21,741,216
Financial guarantee liabilities	18,437
Others	2,671,022
Short-term financial instruments	8,006,081	10,514,093
Other receivables	2,112,697	2,104,610
Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial assets	32,170,460	32,157,831
Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial liabilities	32,809,257	30,038,885
Financial assets at fair value through profit or loss [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Derivatives assets held for trading	350,149	241,541
Short-term financial instruments	8,006,081	10,514,093
Debt securities	75,876	10,717
Other securities	632,469	430,998
Other receivables	2,000	2,000
Derivative hedging instruments	9,846	7,555
Fair value through other comprehensive income [Member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Equity securities	1,462,088	1,466,061
Amortized cost [Member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Cash and cash Equivalents	8,053,108	4,775,166
Trade accounts and notes receivable	8,414,667	9,051,708
Debt securities	124,147	151,146
Other receivables	2,458,227	2,761,566
Deposit instruments	2,581,802	2,745,280
Financial liabilities at fair value through profit or loss [Member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Fair value through profit or loss Derivative liabilities	157,036	93,236
Derivative hedging instruments	18,105	16,803
Borrowings	1,358,294	1,435,193
Financial liabilities measured at amortized cost [member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Trade accounts and notes payable	5,520,821	5,468,869
Borrowings	22,947,368	20,306,023
Financial guarantee liabilities	18,438	25,598
Others	2,789,195	2,693,163
Fair value [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial assets	10,538,509	12,672,965
Fair value [member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial liabilities	23,865,206	21,938,478
Fair value [member] | Financial assets at fair value through profit or loss [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Derivatives assets held for trading	350,149	241,541
Short-term financial instruments	8,006,081	10,514,093
Debt securities	75,876	10,717
Other securities	632,469	430,998
Other receivables	2,000	2,000
Derivative hedging instruments	9,846	7,555
Fair value [member] | Fair value through other comprehensive income [Member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Equity securities	1,462,088	1,466,061
Fair value [member] | Financial liabilities at fair value through profit or loss [Member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Fair value through profit or loss Derivative liabilities	157,036	93,236
Derivative hedging instruments	18,105	16,803
Borrowings	1,358,294	1,435,193
Fair value [member] | Financial liabilities measured at amortized cost [member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Borrowings	22,331,771	20,393,246
Level 1 [member] | Fair value [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial assets	1,239,811	1,287,840
Level 1 [member] | Fair value [member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial liabilities	1,358,294	1,435,193
Level 1 [member] | Fair value [member] | Financial assets at fair value through profit or loss [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Other securities	29,687	37,343
Level 1 [member] | Fair value [member] | Fair value through other comprehensive income [Member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Equity securities	1,210,124	1,250,497
Level 1 [member] | Fair value [member] | Financial liabilities at fair value through profit or loss [Member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Borrowings	1,358,294	1,435,193
Level 2 [member] | Fair value [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial assets	8,437,024	10,764,211
Level 2 [member] | Fair value [member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial liabilities	22,506,912	20,503,285
Level 2 [member] | Fair value [member] | Financial assets at fair value through profit or loss [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Derivatives assets held for trading	350,149	241,541
Short-term financial instruments	8,006,081	10,514,093
Debt securities	69,926
Other securities	1,022	1,022
Derivative hedging instruments	9,846	7,555
Level 2 [member] | Fair value [member] | Financial liabilities at fair value through profit or loss [Member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Fair value through profit or loss Derivative liabilities	157,036	93,236
Derivative hedging instruments	18,105	16,803
Level 2 [member] | Fair value [member] | Financial liabilities measured at amortized cost [member] | Liabilities measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Borrowings	22,331,771	20,393,246
Level 3 [member] | Fair value [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Financial assets	861,674	620,914
Level 3 [member] | Fair value [member] | Financial assets at fair value through profit or loss [member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Debt securities	5,950	10,717
Other securities	601,760	392,633
Other receivables	2,000	2,000
Level 3 [member] | Fair value [member] | Fair value through other comprehensive income [Member] | Assets measured at fair value [member]
Disclosures Of Fair Value Hierarchy Of Financial Assets And Financial Liabilities [Line items]
Equity securities	₩ 251,964	₩ 215,564

Financial Instruments - Value M

Financial Instruments - Value Measurement Method and Significant but not Observable Inputs for the Financial Assets Classified as Fair Value Hierarchy Level 3 (Detail) - Fair value [member] - Level 3 [member] ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
Discounted cash flow [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Available-for-sale financial assets	₩ 78,759
PeerGroupUsage [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Available-for-sale financial assets	49,687
Asset value approach [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Available-for-sale financial assets	₩ 733,228
Available-for-sale financial assets [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Price multiple	1.0096
Available-for-sale financial assets [member] | Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth rate	0%
Discount rate	4.97%
Available-for-sale financial assets [member] | Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Growth rate	1%
Discount rate	14.89%

Financial Instruments - Sensiti

Financial Instruments - Sensitivity Analysis of Financial Assets and Financial Liabilities Classified as Level 3 of Fair Value Hierarchy (Detail) - Available-for-sale financial assets [member] ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩)
Fluctuation 0.5% of growth rate [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Favorable changes	₩ 237
Unfavorable changes	(214)
Fluctuation 0.5% of discount rate [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Favorable changes	20,437
Unfavorable changes	₩ (18,667)

Financial Instruments - Changes

Financial Instruments - Changes in Fair Value of Financial Assets and Financial Liabilities Classified as Level 3 (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of fair value measurement of assets [line items]
Beginning	₩ 92,298,890
Ending	99,021,750	₩ 92,298,890
Fair value [member] | Level 3 [member]
Disclosure of fair value measurement of assets [line items]
Beginning	620,914	731,735
Acquisition	182,217	138,473
Gain or loss on valuation of financial assets	24,613	5,292
Other comprehensive income	126,510	1,581
Disposal and others	(92,580)	(256,167)
Ending	₩ 861,674	₩ 620,914

Financial Instruments - Finance

Financial Instruments - Finance Income and Costs by Category of Financial Instruments (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Interest income (expense)	₩ (360,453)	₩ (147,583)	₩ (266,623)
Gain and loss on valuation	(444,390)	311,546	(129,765)
Gain and loss on foreign currency	(487,324)	(161,698)	228,769
Gain and loss on disposal	323,320	(100,293)	(63,803)
Others	(1,608)	62,963	16,517
Total	(970,455)	(35,065)	(214,905)
Other comprehensive income (loss)	(9,053)	215,197	(77,958)
Derivative financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Gain and loss on valuation	(162,649)	55,858	(170,155)
Gain and loss on disposal	(647,418)	(465,174)	(376,823)
Total	(810,067)	(409,316)	(546,978)
Other comprehensive income (loss)	1,023	309	(331)
Financial liabilities measured at amortized cost [member]
Disclosure of detailed information about financial instruments [line items]
Interest income (expense)	(607,458)	(439,826)	(638,797)
Gain and loss on foreign currency	(893,377)	(846,202)	450,984
Gain and loss on disposal	0	(16)
Others	1,443	11,537	(16,010)
Total	(1,499,392)	(1,274,507)	(203,823)
Financial assets at fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Interest income (expense)	20,421	158,121	165,160
Gain and loss on valuation	(599,777)	(12,093)	(15,883)
Gain and loss on disposal	237,771	12,119	9,979
Others	545	26,170	329
Total	(341,040)	184,317	159,585
Derivative financial assets [member]
Disclosure of detailed information about financial instruments [line items]
Gain and loss on valuation	232,246	213,724	56,273
Gain and loss on disposal	797,211	370,547	318,820
Total	1,029,457	584,271	375,093
Fair value through other comprehensive income [Member]
Disclosure of detailed information about financial instruments [line items]
Others	38,837	48,281	38,019
Total	38,837	48,281	38,019
Other comprehensive income (loss)	(10,076)	214,888	(77,627)
Amortized cost [Member]
Disclosure of detailed information about financial instruments [line items]
Interest income (expense)	226,584	134,122	207,014
Gain and loss on foreign currency	414,944	651,435	(222,215)
Gain and loss on disposal	(64,244)	(17,769)	(15,779)
Others	(42,433)	(7,149)	(5,821)
Total	534,851	760,639	₩ (36,801)
Financial liabilities at fair value [member]
Disclosure of detailed information about financial instruments [line items]
Gain and loss on valuation	85,790	54,057
Gain and loss on foreign currency	(8,891)	33,069
Others	0	(15,876)
Total	₩ 76,899	₩ 71,250

Financial Instruments - Maximum

Financial Instruments - Maximum Exposure to Credit Risk (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	₩ 32,048,519	₩ 30,691,770
Cash and cash equivalents [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	8,053,108	4,775,166
Derivative financial assets [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	359,995	249,096
Short-term financial instrument [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	8,006,082	10,514,093
Debt securities [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	200,023	161,863
Other securities [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	632,469	430,998
Other receivables [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	2,460,227	2,763,566
Trade accounts and notes receivable [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	9,754,813	9,051,708
Deposit instruments [member]
Disclosure of credit risk exposure [line items]
Maximum exposure to credit risk	₩ 2,581,802	₩ 2,745,280

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about financial instruments [line items]
Maximum exposure to credit risk related financial guarantees	₩ 32,048,519	₩ 30,691,770
Financial guarantees [member]
Disclosure of detailed information about financial instruments [line items]
Maximum exposure to credit risk related financial guarantees	₩ 3,982,288	₩ 4,122,774

Financial Instruments - Allowan

Financial Instruments - Allowance for Doubtful Accounts (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of financial assets [line items]
Allowance for doubtful accounts	₩ 730,513	₩ 717,365	₩ 753,693	₩ 898,273
Trade accounts and notes receivable [member]
Disclosure of financial assets [line items]
Allowance for doubtful accounts	378,100	365,120
Other accounts receivable [member]
Disclosure of financial assets [line items]
Allowance for doubtful accounts	178,264	171,273
Loans [member]
Disclosure of financial assets [line items]
Allowance for doubtful accounts	165,051	172,162
Other assets [member]
Disclosure of financial assets [line items]
Allowance for doubtful accounts	₩ 9,098	₩ 8,810

Financial Instruments - Impairm

Financial Instruments - Impairment Losses on Financial Assets (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of financial assets [line items]
Impairment loss on financial assets, net	₩ 34,615	₩ 27,178
Bad debt expenses (reversal) [member]
Disclosure of financial assets [line items]
Impairment loss on financial assets	24,791	40,153
Others [member]
Disclosure of financial assets [line items]
Impairment loss on financial assets	14,968	19,704
Less: Recovery of impairment loss on financial assets	₩ (5,144)	₩ (32,679)

Financial Instruments - Aging a

Financial Instruments - Aging and Impairment Losses of Trade Accounts and Notes Receivable and Other Receivables (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Trade accounts and notes receivables, net [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	₩ 10,104,276	₩ 10,407,264
Impairment loss on financial assets	378,100	365,120
Trade accounts and notes receivables, net [member] | Current (not past due) [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	7,888,518	9,481,730
Impairment loss on financial assets	20,752	28,866
Trade accounts and notes receivables, net [member] | Overdue less than 1 month [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	864,391	289,716
Impairment loss on financial assets	63,311	6,537
Trade accounts and notes receivables, net [member] | 1 month-3 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	388,151	132,509
Impairment loss on financial assets	10,337	2,821
Trade accounts and notes receivables, net [member] | 3 months-12 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	517,171	85,339
Impairment loss on financial assets	12,645	22,212
Trade accounts and notes receivables, net [member] | Over 12 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	446,045	417,970
Impairment loss on financial assets	271,055	304,684
Other receivables [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	2,812,640	3,115,811
Impairment loss on financial assets	352,413	352,245
Other receivables [member] | Current (not past due) [member]
Disclosure of financial assets that are either past due or impaired [line items]
Impairment loss on financial assets	53,070	99,661
Other receivables [member] | Not due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	2,049,908	2,239,492
Other receivables [member] | Overdue less than 1 month [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	141,718	33,276
Impairment loss on financial assets	2,987	373
Other receivables [member] | 1 month-3 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	108,152	86,517
Impairment loss on financial assets	16,408	71
Other receivables [member] | 3 months-12 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	24,912	289,810
Impairment loss on financial assets	930	12,227
Other receivables [member] | Over 12 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Financial assets	487,950	466,716
Impairment loss on financial assets	₩ 279,018	₩ 239,913

Financial Instruments - Chang_2

Financial Instruments - Changes in Allowance for Doubtful Accounts (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of changes in allowance account for credit losses of financial assets [abstract]
Beginning	₩ 717,365	₩ 753,693	₩ 898,273
Bad debt expenses(reversal)	24,791	40,153	829
Other bad debt expenses	9,824	(12,975)	53,105
Others	(21,467)	(63,506)	(198,514)
Ending	₩ 730,513	₩ 717,365	₩ 753,693

Financial Instruments - Contrac

Financial Instruments - Contractual Maturities for Non-derivative Financial Liabilities (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade accounts and notes payable, book value	₩ 5,520,822
Borrowings, book value	24,305,662	₩ 21,741,216
Financial guarantee liabilities, book value	18,437
Lease liabilities book value	823,482
Other financial liabilities, book value	2,671,022
Non-derivative financial liabilities, book value	33,339,425
Trade accounts and notes payable, contractual cash flow	5,520,822
Borrowings, contractual cash flow	25,525,529
Financial guarantee liabilities, contractual cash flow	3,982,288
Lease liabilities contractual cash flows	853,253
Other financial liabilities, contractual cash flow	2,671,287
Non-derivative financial liabilities, contractual cash flow	38,553,179
Less than 1 year [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade accounts and notes payable, contractual cash flow	5,520,807
Borrowings, contractual cash flow	11,924,070
Financial guarantee liabilities, contractual cash flow	3,982,288
Lease liabilities contractual cash flows	146,558
Other financial liabilities, contractual cash flow	2,554,837
Non-derivative financial liabilities, contractual cash flow	24,128,560
1 year - 5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade accounts and notes payable, contractual cash flow	15
Borrowings, contractual cash flow	12,711,700
Lease liabilities contractual cash flows	393,948
Other financial liabilities, contractual cash flow	116,450
Non-derivative financial liabilities, contractual cash flow	13,222,113
After 5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Borrowings, contractual cash flow	889,759
Lease liabilities contractual cash flows	312,747
Non-derivative financial liabilities, contractual cash flow	₩ 1,202,506

Financial Instruments - Chang_3

Financial Instruments - Changes in Allowance for Doubtful Accounts (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of changes in allowance account for credit losses of financial assets [abstract]
Write-off of receivables	₩ 20,855	₩ 86,111	₩ 150,417

Financial Instruments - Maturit

Financial Instruments - Maturity Analysis of Derivative Financial Liabilities (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	₩ 175,141
Currency forward [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	80,397
Currency swap [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	3,920
Others [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	90,824
Less than 1 year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	95,157
Less than 1 year [member] | Currency forward [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	72,048
Less than 1 year [member] | Currency swap [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	3,750
Less than 1 year [member] | Others [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	19,359
1 year - 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	79,984
1 year - 5 years [member] | Currency forward [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	8,349
1 year - 5 years [member] | Currency swap [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	170
1 year - 5 years [member] | Others [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	71,465
After 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	0
After 5 years [member] | Currency forward [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	0
After 5 years [member] | Currency swap [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	0
After 5 years [member] | Others [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities	₩ 0

Financial Instruments - Exposur

Financial Instruments - Exposure to Currency Risk (Detail) - Currency risk [member] - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
USD [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Assets	₩ 5,553,742	₩ 5,237,890
Liabilities	8,996,494	7,879,302
EUR [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Assets	574,739	622,749
Liabilities	2,438,031	2,620,254
JPY [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Assets	525,815	156,007
Liabilities	384,535	545,622
Others [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Assets	1,614,928	849,744
Liabilities	₩ 807,876	₩ 467,053

Financial Instruments - Chang_4

Financial Instruments - Changes in Gain or Loss Due to a Hypothetically Strengthening or Weakening in Foreign Currencies (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
10% increase [member] | USD [member]
Disclosure of detailed information about hedging instruments [line items]
Changes in gain or loss due to hypothetically strengthens or weakens of functional currency against foreign currencies other than functional currency	₩ (344,275)	₩ (264,141)
Hypothetical percentage change in functional currency against foreign currencies other than functional currency	10%	10%
10% increase [member] | EUR [member]
Disclosure of detailed information about hedging instruments [line items]
Changes in gain or loss due to hypothetically strengthens or weakens of functional currency against foreign currencies other than functional currency	₩ (186,329)	₩ (199,751)
Hypothetical percentage change in functional currency against foreign currencies other than functional currency	10%	10%
10% increase [member] | JPY [member]
Disclosure of detailed information about hedging instruments [line items]
Changes in gain or loss due to hypothetically strengthens or weakens of functional currency against foreign currencies other than functional currency	₩ 14,128	₩ (38,962)
Hypothetical percentage change in functional currency against foreign currencies other than functional currency	10%	10%
10% decrease [member] | USD [member]
Disclosure of detailed information about hedging instruments [line items]
Changes in gain or loss due to hypothetically strengthens or weakens of functional currency against foreign currencies other than functional currency	₩ 344,275	₩ 264,141
Hypothetical percentage change in functional currency against foreign currencies other than functional currency	10%	10%
10% decrease [member] | EUR [member]
Disclosure of detailed information about hedging instruments [line items]
Changes in gain or loss due to hypothetically strengthens or weakens of functional currency against foreign currencies other than functional currency	₩ 186,329	₩ 199,751
Hypothetical percentage change in functional currency against foreign currencies other than functional currency	10%	10%
10% decrease [member] | JPY [member]
Disclosure of detailed information about hedging instruments [line items]
Changes in gain or loss due to hypothetically strengthens or weakens of functional currency against foreign currencies other than functional currency	₩ (14,128)	₩ 38,962
Hypothetical percentage change in functional currency against foreign currencies other than functional currency	10%	10%

Financial Instruments - Carryin

Financial Instruments - Carrying Amount of Interest-Bearing Financial Instruments (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fixed rate [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Financial assets	₩ 21,394,764	₩ 20,677,076
Financial liabilities	(16,932,079)	(16,092,096)
Financial asset and liabilities	4,462,685	4,584,980
Variable rate [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Financial liabilities	₩ (8,197,066)	₩ (6,427,133)

Financial Instruments - Chang_5

Financial Instruments - Changes in Interest Expense Due to an Increases or Decreases in Interest Rate (Detail) - Variable rate [member] - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
1% increase in floating rates [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Hypothetical percentage change in the floating rate	1%	1%
Change in interest expense due to hypothetical increase or decrease in the floating rate	₩ (81,971)	₩ (64,271)
1% decrease in floating rates [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Hypothetical percentage change in the floating rate	1%	1%
Change in interest expense due to hypothetical increase or decrease in the floating rate	₩ 81,971	₩ 64,271

Share Capital and Capital Sur_3

Share Capital and Capital Surplus - Summary of Share Capital (Detail) - KRW (₩)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of classes of share capital [abstract]
Authorized shares	200,000,000	200,000,000
Par value	₩ 5,000	₩ 5,000
Issued shares(*1)	84,571,230	87,186,835	87,186,835
Shared capital(*2)	₩ 482,403,125,000	₩ 482,403,125,000

Share Capital and Capital Sur_4

Share Capital and Capital Surplus - Summary of Share Capital (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of classes of share capital [line items]
Total shares of ADRs outstanding	75,849,177	75,625,572	76,015,472
Total shares of ADRs outstanding, equivalent common stock shares	6,194,984
Difference between the ending balance of common stock and the par value of issued common stock due to retirement of treasury stocks	₩ 59,547
Retirement of treasury stock	11,909,395
ADRs [member]
Disclosure of classes of share capital [line items]
Total shares of ADRs outstanding	24,779,936

Share Capital and Capital Sur_5

Share Capital and Capital Surplus - Changes in Issued Common Stock (Detail) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of classes of share capital [abstract]
Shares issued beginning balance	87,186,835	87,186,835
Retirement of treasury shares	(2,615,605)
Shares issued ending balance	84,571,230	87,186,835
Treasury shares beginning balance	(11,561,263)	(11,171,363)
Acquisition of treasury shares	0	(389,900)
Disposal of treasury shares	223,605
Retirement of treasury shares	2,615,605
Treasury shares ending balance	(8,722,053)	(11,561,263)
Number of outstanding shares beginning balance	75,625,572	76,015,472
Acquisition of treasury shares	0	(389,900)
Number of outstanding shares ending balance	75,849,177	75,625,572
Disposal of treasury shares	223,605

Share Capital and Capital Sur_6

Share Capital and Capital Surplus - Summary of Capital Surplus (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Statement of changes in equity [abstract]
Share premium	₩ 463,825	₩ 463,825
Gain on disposal of treasury shares	806,114	796,623
Other capital surplus	140,349	136,968
Capital surplus	₩ 1,410,288	₩ 1,397,416

Hybrid Bonds - Summary of Hybri

Hybrid Bonds - Summary of Hybrid Bonds (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Hybrid bonds classified as equity	₩ 199,384	₩ 199,384
Hybrid bond 1-2 [member]
Disclosure of detailed information about borrowings [line items]
Date of issue	Jun. 13, 2013
Date of maturity	Jun. 13, 2043
Interest rate (%)	4.60%
Gross amount [member] | Hybrid bond 1-2 [member]
Disclosure of detailed information about borrowings [line items]
Hybrid bonds classified as equity	₩ 200,000	200,000
Issuance cost [member]
Disclosure of detailed information about borrowings [line items]
Hybrid bonds classified as equity	₩ (616)	₩ (616)

Hybrid Bonds - Summary of Hyb_2

Hybrid Bonds - Summary of Hybrid Bonds (Parenthetical) (Detail) - Hybrid bond 1-2 [member]	12 Months Ended
	Dec. 31, 2022
Disclosure of detailed information about borrowings [line items]
Maturity date	30 years (The issuer has a right to extend the maturity date)
Interest rate adjustment	4.60%
Interest payments condition	Quarterly (Optional deferral of interest payment is available to the Company)
Others	The Company can call the hybrid bond at year 10th anniversary of issuance and interest payment date afterwards
After 10 years [member]
Disclosure of detailed information about borrowings [line items]
Interest rate adjustment	1.40%
After 10 years : Return on Government Bond [member]
Disclosure of detailed information about borrowings [line items]
Interest rate adjustment	0.25%
After 30 years [member]
Disclosure of detailed information about borrowings [line items]
Interest rate adjustment	0.75%

Hybrid Bonds - Additional Infor

Hybrid Bonds - Additional Information (Detail) - Hybrid bonds [member] ₩ in Millions	Dec. 31, 2022 KRW (₩)
Disclosure of detailed information about borrowings [line items]
Interest accumulated but not paid on hybrid bonds	₩ 479
POSCO ENERGY CO., LTD. [member]
Disclosure of detailed information about borrowings [line items]
Interest accumulated but not paid on hybrid bonds	₩ 639

Hybrid Bonds - Hybrid Bonds Iss

Hybrid Bonds - Hybrid Bonds Issued by POSCO ENERGY Co., Ltd. (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Hybrid bond	₩ 0	₩ 199,384
Hybrid bond 1-4 [member]
Disclosure of detailed information about borrowings [line items]
Interest rate (%)	5.21%
POSCO ENERGY CO., LTD. [member]
Disclosure of detailed information about borrowings [line items]
Hybrid bond	₩ 139,571	139,571
POSCO ENERGY CO., LTD. [member] | Hybrid bond 1-4 [member]
Disclosure of detailed information about borrowings [line items]
Date of issue	Aug. 29, 2013
Date of maturity	Aug. 29, 2043
Interest rate (%)	5.21%
POSCO ENERGY CO., LTD. [member] | Gross amount [member] | Hybrid bond 1-4 [member]
Disclosure of detailed information about borrowings [line items]
Hybrid bond	₩ 140,000	140,000
POSCO ENERGY CO., LTD. [member] | Issuance cost [member]
Disclosure of detailed information about borrowings [line items]
Hybrid bond	₩ (429)	₩ (429)

Hybrid Bonds - Hybrid Bonds I_2

Hybrid Bonds - Hybrid Bonds Issued by POSCO ENERGY Co., Ltd. (Parenthetical) (Detail) - Hybrid bond 1-4 [member]	12 Months Ended
	Dec. 31, 2022
Disclosure of detailed information about borrowings [line items]
Interest rate (%)	5.21%
POSCO ENERGY CO., LTD. [member]
Disclosure of detailed information about borrowings [line items]
Maturity date	30 years (The issuer has a right to extend the maturity date)
Interest rate (%)	5.21%
Interest rate adjustment	0.75%
Interest payments condition	Quarterly (Optional deferral of interest payment is available to the Company)
Others	The issuer can call the hybrid bond at year 10th anniversary of issuance and interest payment date afterwards
After 10 years : Return on Government Bond [member]
Disclosure of detailed information about borrowings [line items]
Interest rate adjustment	1.55%
After 10 years [member]
Disclosure of detailed information about borrowings [line items]
Interest rate adjustment	0.25%

Reserves - Summary of Reserves

Reserves - Summary of Reserves (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of reserves within equity [abstract]
Accumulated comprehensive loss of investments in associates and joint ventures	₩ (406,555)	₩ (532,833)
Changes in fair value of equity investments at fair value through other comprehensive income	(103,843)	(153,359)
Foreign currency translation differences	60,487	7,762
Gain or losses on valuation of derivatives	(3)	(455)
Others	5,924	11,900
Reserves	₩ (443,990)	₩ (666,985)

Reserves - Changes in the Unrea

Reserves - Changes in the Unrealized Fair Value of Available-for-sale Investments (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of reserves within equity [abstract]
Changes in unrealized fair value of available-for-sale investments, beginning balance	₩ (153,359)	₩ (359,283)
Changes in unrealized fair value of equity investments	37,068	201,144
Reclassification upon disposal	20,729	1,667
Others	(8,281)	3,113
Changes in unrealized fair value of available-for-sale investments, ending balance	₩ (103,843)	₩ (153,359)

Treasury Shares - Changes in Tr

Treasury Shares - Changes in Treasury Shares (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Number of shares, Beginning	11,561,263	11,171,363
Number of shares, Acquisition of treasury shares	0	(389,900)
Number of disposal of outstanding treasury shares	223,605
Number of retirement of outstanding treasury shares	2,615,605
Number of shares, Ending	8,722,053	11,561,263	11,171,363
Amount, Beginning	₩ 2,508,294
Amount, Acquisition of treasury shares		₩ 116,771	₩ 883,220
Amount, Ending	1,892,308	₩ 2,508,294
Retirement of treasury stock	₩ (59,547)
Treasury shares [member]
Number of shares, Beginning	11,561,263	11,171,363
Number of shares, Acquisition of treasury shares		389,900
Number of disposal of outstanding treasury shares	(223,605)
Number of retirement of outstanding treasury shares	(2,615,605)
Number of shares, Ending	8,722,053	11,561,263	11,171,363
Amount, Beginning	₩ 2,508,294	₩ 2,391,523
Amount, Acquisition of treasury shares		116,771	₩ 883,220
Amount, Ending	1,892,308	₩ 2,508,294	₩ 2,391,523
Disposal of treasury shares	(48,513)
Retirement of treasury stock	₩ (567,473)

Share-Based Payments - Summary

Share-Based Payments - Summary Of Company Stock Grant Program (Detail) ₩ in Millions	12 Months Ended
	Dec. 31, 2022 KRW (₩) shares
POSCO HOLDINGS INC [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant	Dec. 31, 2022
Fair value of common shares per share as of date of grant | ₩	₩ 276,500
Treasury shares [member] | POSCO HOLDINGS INC [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Total quantity of treasury shares to be granted	15,888
Treasury shares [member] | Subsidiaries [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Total quantity of treasury shares to be granted	27,926

Revenue - Summary of Revenue Di

Revenue - Summary of Revenue Disaggregated by Types of Revenue and Timing of Revenue Recognition (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	₩ 85,003,616	₩ 76,009,201	₩ 57,466,678
Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	70,835,389	65,976,974	48,108,619
Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	5,510,054	3,419,853	2,707,450
Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	7,798,351	6,042,017	6,225,446
Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	859,822	570,357	425,163
Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	72,524,037	67,036,279	48,668,502
Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	12,479,579	8,972,922	8,798,176
Steel [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	44,546,966	41,093,405	28,892,878
Steel [member] | Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	43,508,308	40,305,393	28,394,790
Steel [member] | Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	919,391	680,513	462,489
Steel [member] | Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	0	0
Steel [member] | Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	119,267	107,499	35,599
Steel [member] | Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	43,627,575	40,412,892	28,430,389
Steel [member] | Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	919,391	680,513	462,489
Construction [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	7,921,108	6,075,222	6,250,052
Construction [member] | Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	0	0
Construction [member] | Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	142,708	58,807	45,359
Construction [member] | Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	7,769,863	6,014,050	6,197,497
Construction [member] | Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	8,537	2,365	7,196
Construction [member] | Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	837,363	491,313	141,916
Construction [member] | Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	7,083,745	5,583,909	6,108,136
Trading [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	25,955,458	25,065,608	19,345,222
Trading [member] | Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	24,824,117	24,233,531	18,796,522
Trading [member] | Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	586,047	547,369	388,222
Trading [member] | Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	0	0
Trading [member] | Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	545,294	284,708	160,478
Trading [member] | Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	25,369,411	24,518,239	18,957,000
Trading [member] | Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	586,047	547,369	388,222
Energy and Others [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	3,998,959	2,061,277	1,880,736
Energy and Others [Member] | Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	84,168	7,751	2,490
Energy and Others [Member] | Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	3,849,390	2,027,133	1,801,862
Energy and Others [Member] | Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	0	0
Energy and Others [Member] | Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	65,401	26,393	76,384
Energy and Others [Member] | Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	149,569	34,144	78,874
Energy and Others [Member] | Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	3,849,390	2,027,133	1,801,862
Green Materials and Energy [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	2,451,785	1,241,957	771,575
Green Materials and Energy [Member] | Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	2,418,796	1,210,874	742,128
Green Materials and Energy [Member] | Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	4,501	3,150	1,498
Green Materials and Energy [Member] | Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	28,488	27,933	27,949
Green Materials and Energy [Member] | Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	0	0
Green Materials and Energy [Member] | Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	2,418,796	1,210,874	742,128
Green Materials and Energy [Member] | Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	32,989	31,083	29,447
Other [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	129,340	471,732	326,215
Other [member] | Revenue from sales of goods [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	219,425	172,689
Other [member] | Revenue from services [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	8,017	102,881	8,020
Other [member] | Revenue from construction contract [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	0	34	0
Other [member] | Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	121,323	149,392	145,506
Other [member] | Revenue recognized at a point in time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	121,323	368,817	318,195
Other [member] | Revenue recognized over time [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	₩ 8,017	₩ 102,915	₩ 8,020

Revenue - Summary of Contract A

Revenue - Summary of Contract Assets and Liabilities From Contracts With Customers (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of Receivables, customer finance, contract assets and contract liabilities [abstract]
Account receivables	₩ 8,414,667	₩ 9,051,708
Due from customers for contract work	1,311,508	990,436
Advance received	1,233,424	1,583,732
Due to customers for contract work	756,316	813,207
Unearned revenue	₩ 84,195	₩ 133,765

Revenue - Contract Balances - S

Revenue - Contract Balances - Summary of In-Progress Contracts (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items]
Accumulated cost	₩ 27,940,760	₩ 30,691,333
Accumulated contract profit	1,759,843	2,462,231
Accumulated contract loss	(885,148)	(1,244,787)
Accumulated contract revenue	₩ 28,815,455	₩ 31,908,777

Revenue - Contract Balances -_2

Revenue - Contract Balances - Summary of Due From Customers for Contract Work and Due to Customers for Contract Work (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items]
Unbilled due from customers for contract	₩ 1,340,146	₩ 1,027,039
Due to customers for contract work	(756,316)	(813,207)
Construction contract in progress	₩ 583,830	₩ 213,832

Revenue - Contract Balances -_3

Revenue - Contract Balances - Summary of Changes in Estimated Total Contract Costs and Impact on Profit or Loss (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items]
Changes in total contract revenues	₩ 1,222,558	₩ 862,660
Changes in estimated total contract costs	1,622,429	659,613
Changes in profit before income taxes of construction contract:
- Current period	(165,623)	116,340
- Future periods	₩ (234,248)	₩ 86,707

Revenue - Contract Balances -_4

Revenue - Contract Balances - Summary of Significant Assumptions Including Uncertainty of Estimate of Total Contract Costs (Detail)	12 Months Ended
	Dec. 31, 2022
Material cost [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Method of significant assumption	Assumption based on recent purchasing price and quoted market price
Labor cost [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Method of significant assumption	Assumption based on standard monthly and daily labor cost
Outsourcing cost [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Method of significant assumption	Assumption based on the past experience rate of similar project and market price

Revenue - Contract Balances -_5

Revenue - Contract Balances - Summary of Expected Revenue In Relation To Performance Obligations (Detail) ₩ in Millions	Dec. 31, 2022 KRW (₩)
Disclosure Of Expected Revenue In Relation To Performance Obligations [Line Items]
Expected Revenue	₩ 16,867,618
2021
Disclosure Of Expected Revenue In Relation To Performance Obligations [Line Items]
Expected Revenue	7,529,798
2022
Disclosure Of Expected Revenue In Relation To Performance Obligations [Line Items]
Expected Revenue	5,999,477
2023
Disclosure Of Expected Revenue In Relation To Performance Obligations [Line Items]
Expected Revenue	2,350,137
After 2024
Disclosure Of Expected Revenue In Relation To Performance Obligations [Line Items]
Expected Revenue	₩ 988,206

Selling and Administrative Ex_3

Selling and Administrative Expenses - Summary of Other Administrative Expenses (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of comprehensive income [Line Items]
Wages and salaries	₩ 4,024,805	₩ 3,684,894	₩ 3,316,364
Expenses related to post-employment benefits	228,610	243,567	248,324
Depreciation	3,204,744	3,135,345	3,156,181
Amortization	488,835	444,100	465,558
Electricity	936,360	744,207	656,121
Research & development	536,274	468,549	468,134
Vehicles maintenance	3,077,044	1,580,200	1,428,012
Total administrative expenses	2,479,966	2,209,809	1,939,602
Administrative expenses [member]
Statement of comprehensive income [Line Items]
Wages and salaries	1,075,873	941,824	828,667
Expenses related to post-employment benefits	84,582	142,606	83,037
Other employee benefits	230,909	207,074	187,075
Travel	39,661	18,916	17,513
Depreciation	148,639	144,037	146,483
Amortization	90,069	87,232	115,254
Communication	10,890	9,898	10,390
Electricity	9,563	7,398	7,968
Taxes and public dues	95,976	85,808	59,274
Rental	36,732	28,682	34,966
Repairs	17,343	12,604	8,952
Entertainment	13,741	10,186	8,328
Advertising	103,551	89,218	71,743
Research & development	179,714	123,092	116,273
Service fees	225,072	187,271	156,530
Vehicles maintenance	7,102	5,336	4,880
Industry association fee	11,624	9,691	9,586
Conference	20,259	14,479	11,576
Increase (decrease) to provisions	(909)	8,936	12,285
Others	₩ 79,575	₩ 75,521	₩ 48,822

Selling and Administrative Ex_4

Selling and Administrative Expenses - Summary of Selling Expenses (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of comprehensive income [Line Items]
Freight and custody	₩ 3,077,044	₩ 1,580,200	₩ 1,428,012
Sales commissions	75,012	65,404	86,851
Total Selling expenses	294,482	393,075	376,940
Selling expenses [member]
Statement of comprehensive income [Line Items]
Freight and custody	77,427	192,973	180,503
Operating expenses for distribution center	2,507	7,382	6,977
Sales commissions	75,012	65,404	86,851
Sales advertising	5,782	3,620	1,284
Sales promotion	19,388	6,264	7,086
Sample	2,052	2,164	1,650
Sales insurance premium	39,018	41,069	30,364
Contract cost	57,661	61,450	46,247
Others	15,635	12,749	15,978
Total Selling expenses	₩ 294,482	₩ 393,075	₩ 376,940

Research and Development Expe_3

Research and Development Expenditures Recognized as Expenses - Summary of Research and Development Expenditures Recognized as Expenses (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of comprehensive income [Line Items]
Research and development expenditures recognized as expenses	₩ 536,274	₩ 468,549	₩ 468,134
Administrative expenses [member]
Statement of comprehensive income [Line Items]
Research and development expenditures recognized as expenses	179,714	123,092	116,273
Cost Of Sale [Member]
Statement of comprehensive income [Line Items]
Research and development expenditures recognized as expenses	₩ 356,560	₩ 345,457	₩ 351,861

Finance Income and Costs - Deta

Finance Income and Costs - Details of Finance Income and Costs (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finance income
Interest income	₩ 247,005	₩ 292,243	₩ 372,174
Dividend income	39,383	74,451	38,348
Gain on foreign currency transactions	2,284,126	1,079,939	1,147,692
Gain on foreign currency translations	703,627	298,452	574,463
Gain on derivatives transactions	840,265	402,171	352,005
Gain on valuations of derivatives	262,723	370,780	115,642
Gain on disposals of financial assets at fair value through profit of loss	256,016	20,070	15,550
Gain on valuations of financial assets at fair value through profit or loss	98,359	101,717	51,581
Gain on valuations of financial liabilities at fair value through profit or loss	85,790	54,057	0
Others	16,717	36,230	10,044
Finance income	4,834,011	2,730,110	2,677,499
Finance costs
Interest expenses	(607,458)	(439,826)	(638,797)
Loss on foreign currency transactions	(2,505,862)	(985,179)	(1,067,907)
Loss on foreign currency translations	(969,215)	(554,910)	(425,479)
Loss on derivatives transactions	(690,471)	(496,798)	(410,008)
Loss on valuations of derivatives	(193,127)	(101,198)	(229,524)
Loss on disposals of trade accounts and notes receivable	(64,244)	(17,769)	(15,816)
Loss on disposals of financial assets at fair value through profit or loss	(18,245)	(7,951)	(5,571)
Loss on valuations of financial assets at fair value through profit or loss	(698,136)	(113,810)	(67,464)
Others	(57,708)	(47,734)	(31,836)
Finance costs	₩ (5,804,466)	₩ (2,765,175)	₩ (2,892,402)

Finance Income and Costs - De_2

Finance Income and Costs - Details of Finance Income and Costs (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Analysis of income and expense [abstract]
Interest income	₩ 226,584	₩ 134,121	₩ 207,014

Other Operating Income and Ex_3

Other Operating Income and Expenses - Details of Other Operating Income and Expenses (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other operating income
Gain on disposals of assets held for sale	₩ 55,262	₩ 60,208	₩ 841
Gain on disposals of investment in subsidiaries, associates and joint ventures	13,904	85,981	88,836
Gain on disposals of property, plant and equipment	18,502	12,016	15,548
Gain on disposals of intangible assets	291	273	815
Gain on valuation of firm commitment	181,645	169,485	107,511
Gain on disposals of emission rights	5,181	567	24,851
Reversal of other provisions	5,245	33,887	5,154
Compensation for insured losses(*1)	237,565	38,115	25,253
Miscellaneous Income(*2)	64,235	157,703	111,701
Others	10,187	19,762	21,826
Other operating income	592,017	577,997	402,336
Other operating expenses
Impairment loss on assets held for sale	0	0	(5,030)
Loss on disposals of investments in subsidiaries, associates and joint ventures	(12,400)	(12,882)	(14,632)
Loss on disposals of property, plant and equipment	(111,082)	(95,720)	(142,126)
Impairment loss on property, plant and equipment	(213,183)	(311,520)	(27,040)
Impairment loss on intangible assets	(370,663)	(224,328)	(197,776)
Loss on valuation of firm commitment	(156,183)	(111,542)	(93,098)
Idle tangible asset expenses	(18,184)	(23,843)	(19,276)
Increase to provisions	(88,857)	(37,962)	(30,536)
Donations	(80,558)	(101,258)	(45,652)
Miscellaneous losses	(63,812)	(69,972)	(63,525)
Others	(8,763)	(38,465)	(6,883)
Other operating expenses	₩ (1,123,685)	₩ (1,027,492)	₩ (645,574)

Other Operating Income and Ex_4

Other Operating Income and Expenses - Details of Other Operating Income and Expenses (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Analysis of income and expense [abstract]
Non operating income rebates		₩ 46,283
Received insurance payments	₩ 234,000

Expenses by Nature - Summary of

Expenses by Nature - Summary of Expenses by Nature (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Analysis of income and expense [abstract]
Raw material used, changes in inventories and others	₩ 54,670,367	₩ 44,466,766	₩ 34,555,624
Employee benefits	4,330,946	4,023,167	3,624,953
Outsourced processing cost	8,641,448	7,690,334	7,808,343
Electricity	936,360	744,207	656,121
Depreciation	3,204,744	3,135,345	3,156,181
Amortization	488,835	444,100	465,558
Freight and custody	3,077,044	1,580,200	1,428,012
Sales commissions	75,012	65,404	86,851
Loss on disposal of property, plant and equipment	111,082	95,720	142,126
Impairment loss on property, plant and equipment	213,183	311,520	27,040
Impairment loss on goodwill and intangible assets	370,663	224,328	197,776
Donations	80,558	101,258	45,652
Other	5,058,849	4,962,224	3,638,393
Expenses by nature	81,259,091	67,844,573	55,832,630
Wages and salaries	4,024,805	3,684,894	3,316,364
Expenses related to post-employment benefits	306,141	338,273	308,589
Employee benefits expenses	₩ 4,330,946	₩ 4,023,167	₩ 3,624,953

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Expense (Detail) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Major components of tax expense (income) [abstract]
Current income taxes	[1]	₩ 932,085	₩ 2,470,416	₩ 692,870
Deferred income tax due to temporary differences		(407,958)	(153,919)	(481,303)
Items recorded directly in equity		(62,593)	(102,670)	12,705
Income tax expense		₩ 461,534	₩ 2,213,827	₩ 224,272
[1]Refund (additional payment) of income taxes when filing a final corporation tax return is credited (charged) directly to current income taxes.

Income Taxes - Income Tax Credi

Income Taxes - Income Tax Credit (Charged) Directly to Equity (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current and deferred tax relating to items charged or credited directly to equity [abstract]
Net changes in fair value of equity investments at fair value through other comprehensive income	₩ (37,431)	₩ (83,532)	₩ 26,850
Others	(25,162)	(19,138)	(14,145)
Income taxes credited (charged) directly to equity	₩ (62,593)	₩ (102,670)	₩ 12,705

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
POSCO's statutory rate	27.50%	27.50%	27.50%
Deductible temporary differences	₩ 4,532,662
Taxable temporary differences, not recognized	₩ 10,640,755

Income Taxes - Reconciliation O

Income Taxes - Reconciliation Of Calculated Income Tax Expense Based on the Statutory Rate to Actual Amount of Taxes Recorded (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Profit before income tax expense	₩ 4,047,491	₩ 9,389,809	₩ 1,972,764
Income tax expense computed at statutory rate	1,101,240	2,572,702	533,875
Adjustments:
Tax credits	(133,727)	(313,205)	(90,093)
Additional income tax expense for prior years (Refund of tax for prior years)	22,929	(42,667)	(14,362)
Investment in subsidiaries, associates and joint ventures	(413,349)	(111,938)	147,874
Tax effects due to permanent differences	19,350	17,811	2,591
Effect of tax rate change	(180,533)
Others	45,624	91,124	(355,613)
Adjustments	(639,706)	(358,875)	(309,603)
Income tax expense	₩ 461,534	₩ 2,213,827	₩ 224,272
Effective tax rate	11.40%	23.58%	11.37%

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation Of Calculated Income Tax Expense Based on the Statutory Rate to Actual Amount of Taxes Recorded (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2022
Disclosure of Income Taxes [Line Items]
Other tax effects for reconciliation between accounting profit and tax expense income relating to business combination	₩ 328,453
Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities/assets have not been recognised		₩ 451,352

Income Taxes - Movements in Def

Income Taxes - Movements in Deferred Tax Assets (Liabilities) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	₩ 191,037	₩ 37,118
Inc. (Dec.)	407,957	153,919
Ending	598,994	191,037
Allowance for credit losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	143,358	147,224
Inc. (Dec.)	(12,857)	(3,866)
Ending	130,501	143,358
Property, plant and equipment depreciation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	30,908	32,236
Inc. (Dec.)	(6,981)	(1,328)
Ending	23,927	30,908
Share of profit or loss of equity - accounted investees [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	224,566	219,431
Inc. (Dec.)	45,072	5,135
Ending	269,638	224,566
Allowance for inventories valuation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	22,983	11,542
Inc. (Dec.)	24,582	11,441
Ending	47,565	22,983
Property, plant and equipment revaluation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	(1,603,383)	(1,733,999)
Inc. (Dec.)	1,455,648	130,616
Ending	(147,735)	(1,603,383)
Prepaid expenses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	19,530	19,831
Inc. (Dec.)	(2,607)	(301)
Ending	16,923	19,530
Property, plant and equipment impairment loss [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	453,669	383,503
Inc. (Dec.)	(436,570)	70,166
Ending	17,099	453,669
Gain or loss on foreign currency [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	(1,105)	(51,645)
Inc. (Dec.)	(12,601)	50,540
Ending	(13,706)	(1,105)
Defined benefit liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	(148,341)	(121,820)
Inc. (Dec.)	107,924	(26,521)
Ending	(40,417)	(148,341)
Provision for construction losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	10,190	17,605
Inc. (Dec.)	7,759	(7,415)
Ending	17,949	10,190
Provision for construction warranty [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	74,360	63,515
Inc. (Dec.)	(4,089)	10,845
Ending	70,271	74,360
Accrued income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	(50,452)	(41,176)
Inc. (Dec.)	10,690	(9,276)
Ending	(39,762)	(50,452)
Impairment loss on AFS [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	118,149	108,598
Inc. (Dec.)	(23,607)	9,551
Ending	94,542	118,149
Difference in acquisition costs of treasury shares [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	69,408	69,408
Inc. (Dec.)	(25,516)
Ending	43,892	69,408
Provision for accelerated depreciation
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	(8,510)	(2,915)
Inc. (Dec.)	(2,728,164)	(5,595)
Ending	(2,736,674)	(8,510)
Spin-off
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Inc. (Dec.)	2,111,815
Ending	2,111,815
Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	309,618	392,640
Inc. (Dec.)	99,186	(83,022)
Ending	408,804	309,618
Temporary differences [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	(335,052)	(486,022)
Inc. (Dec.)	609,684	150,970
Ending	274,632	(335,052)
Changes in fair value of investments in equity instruments measured at fair value through other comprehensive income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	73,459	156,991
Inc. (Dec.)	(37,431)	(83,532)
Ending	36,028	73,459
Other deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	134,737	153,876
Inc. (Dec.)	(141,788)	(19,139)
Ending	(7,051)	134,737
Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	208,196	310,867
Inc. (Dec.)	(179,219)	(102,671)
Ending	28,977	208,196
Tax credit carry-forward and others [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	72,864	72,406
Inc. (Dec.)	(1,500)	458
Ending	71,364	72,864
Investments in subsidiaries, associates and joint ventures [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning	245,029	139,867
Inc. (Dec.)	(21,008)	105,162
Ending	₩ 224,021	₩ 245,029

Income Taxes - Summary of Defer

Income Taxes - Summary of Deferred Tax Assets And Liabilities (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	₩ 598,994	₩ 191,037	₩ 37,118
Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	4,024,249	2,391,716
Liabilities	(3,749,617)	(2,726,768)
Net	274,632	(335,052)
Deferred Income Tax Due to Temporary Difference [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	135,495	303,749
Liabilities	(106,518)	(95,553)
Net	28,977	208,196
Deferred Tax From Tax Credit [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	4,694,241	3,282,213
Liabilities	(4,095,247)	(3,091,176)
Net	598,994	191,037
Allowance for credit losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	130,501	143,358	147,224
Allowance for credit losses [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	130,700	143,526
Liabilities	(199)	(168)
Net	130,501	143,358
Property, plant and equipment depreciation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	23,927	30,908	32,236
Property, plant and equipment depreciation [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	94,003	97,713
Liabilities	(70,076)	(66,805)
Net	23,927	30,908
Share of profit or loss of equity - accounted investees [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	269,638	224,566	219,431
Share of profit or loss of equity - accounted investees [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	284,568	294,505
Liabilities	(14,930)	(69,939)
Net	269,638	224,566
Allowance for inventories valuation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	47,565	22,983	11,542
Allowance for inventories valuation [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	47,565	22,983
Liabilities	0
Net	47,565	22,983
Property, plant and equipment revaluation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	(147,735)	(1,603,383)	(1,733,999)
Property, plant and equipment revaluation [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	0
Liabilities	(147,735)	(1,603,383)
Net	(147,735)	(1,603,383)
Prepaid expenses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	16,923	19,530	19,831
Prepaid expenses [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	17,003	19,604
Liabilities	(80)	(74)
Net	16,923	19,530
Property, plant and equipment impairment loss [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	17,099	453,669	383,503
Property, plant and equipment impairment loss [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	17,099	453,669
Liabilities	0
Net	17,099	453,669
Gain or loss on foreign currency [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	(13,706)	(1,105)	(51,645)
Gain or loss on foreign currency [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	75,235	87,947
Liabilities	(88,941)	(89,052)
Net	(13,706)	(1,105)
Defined benefit liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	(40,417)	(148,341)	(121,820)
Defined benefit liabilities [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	550,140	459,074
Liabilities	(590,557)	(607,415)
Net	(40,417)	(148,341)
Provision for construction losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	17,949	10,190	17,605
Provision for construction losses [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	17,949	10,190
Liabilities	0
Net	17,949	10,190
Provision for construction warranty [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	70,271	74,360	63,515
Provision for construction warranty [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	70,271	74,360
Liabilities	0
Net	70,271	74,360
Accrued income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	(39,762)	(50,452)	(41,176)
Accrued income [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	0
Liabilities	(39,762)	(50,452)
Net	(39,762)	(50,452)
Impairment loss on AFS [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	94,542	118,149
Net	94,542	118,149	108,598
Difference in acquisition costs of treasury shares [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	43,892	69,408
Net	43,892	69,408	69,408
Provision for accelerated depreciation
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Liabilities		(8,510)
Net	(2,736,674)	(8,510)	(2,915)
Provision for accelerated depreciation | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	0	0
Liabilities	(2,736,674)
Net	(2,736,674)
Spin-off
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	2,111,815
Spin-off | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	2,112,733	0
Liabilities	(918)
Net	2,111,815
Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	408,804	309,618	392,640
Other [member] | Deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	468,549	540,588
Liabilities	(59,745)	(230,970)
Net	408,804	309,618
Changes in fair value of investments in equity instruments measured at fair value through other comprehensive income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	36,028	73,459	156,991
Changes in fair value of investments in equity instruments measured at fair value through other comprehensive income [member] | Deferred Income Tax Due to Temporary Difference [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	105,125	143,956
Liabilities	(69,097)	(70,497)
Net	36,028	73,459
Other deferred income taxes recognized directly to equity [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	(7,051)	134,737	153,876
Other deferred income taxes recognized directly to equity [member] | Deferred Income Tax Due to Temporary Difference [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	30,370	159,793
Liabilities	(37,421)	(25,056)
Net	(7,051)	134,737
Tax credit carry-forward and others [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	71,364	72,864	72,406
Tax credit carry-forward and others [member] | Deferred Tax From Tax Credit [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	71,364	72,864
Liabilities	0
Net	71,364	72,864
Investments in subsidiaries, associates and joint ventures [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net	224,021	245,029	₩ 139,867
Investments in subsidiaries, associates and joint ventures [member] | Deferred Tax From Tax Credit [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Assets	463,133	513,884
Liabilities	(239,112)	(268,855)
Net	₩ 224,021	₩ 245,029

Earnings Per Share - Basic And

Earnings Per Share - Basic And Diluted Earnings Per Share (Detail) - KRW (₩)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings per share [abstract]
Profit attribute to controlling interest	₩ 3,157,536,155,264	₩ 6,606,727,454,113	₩ 1,581,207,551,926
Interests of hybrid bonds, net of tax	₩ (1,078,164,383)	₩ (6,669,999,999)	₩ (6,688,273,972)
Weighted-average number of common shares outstanding	75,814,870	75,696,150	79,120,963
Basic earnings per share	₩ 41,634	₩ 87,191	₩ 19,900
Total number of common shares issued	84,571,230	87,186,835	87,186,835
Weighted-average number of treasury shares	(8,756,360)	(11,490,685)	(8,065,872)
Weighted-average number of common shares outstanding	75,814,870	75,696,150	79,120,963

Earning Per Share - Summary of

Earning Per Share - Summary of Diluted Earnings Per Share (Detail)	12 Months Ended
	Dec. 31, 2022 KRW (₩) ₩ / shares shares	Dec. 31, 2022 $ / shares	Dec. 31, 2021 KRW (₩) ₩ / shares shares	Dec. 31, 2021 $ / shares	Dec. 31, 2020 KRW (₩) ₩ / shares shares	Dec. 31, 2020 $ / shares
Earnings per share [abstract]
Profit attribute to controlling interest	₩ 3,157,536,155,264		₩ 6,606,727,454,113		₩ 1,581,207,551,926
Interests of hybrid bonds, net of tax	(1,078,164,383)		(6,669,999,999)		(6,688,273,972)
Gain or loss from exchange rate on and revaluation of exchangeable bonds	₩ (55,751,463,819)		₩ (63,166,690,813)		₩ 0
Adjusted weighted-average number of common shares | shares	78,906,375		76,688,340		79,120,963
Diluted earnings per share | (per share)	₩ 39,296	$ 39,296	₩ 85,240	$ 85,240	₩ 19,900	$ 19,900

Earning Per Share - Summary o_2

Earning Per Share - Summary of weighted-average number of common shares used to calculate diluted earnings per share (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings per share [abstract]
Weighted-average number of common shares outstanding	75,814,870	75,696,150	79,120,963
Weighted-average number of potential common share	3,091,505	992,190	0
Adjusted weighted-average number of common shares	78,906,375	76,688,340	79,120,963

Related Party Transactions - Si

Related Party Transactions - Significant Transactions Between the Controlling Company and Related Parties (Detail) - Posco [member] - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Sales	₩ 3,461,987	₩ 17,680,333	₩ 11,985,087
Dividends	524,457
Other sales	24,493	652,846	306,077
Purchase of material	1,287,911	7,492,259	3,965,895
Purchase of fixed assets	153,545	960,353	1,345,125
Outsourced processing cost	136,912	706,703	662,124
Others	291,216	491,195	498,248
SNNC [member]
Disclosure of transactions between related parties [line items]
Sales	3,242	72,797	5,651
Dividends	5,348
Other sales	8	2,514	4,739
Purchase of material	148,239	736,441	545,001
Others		107
POSCO-SAMSUNG-Slovakia Processing Center [member]
Disclosure of transactions between related parties [line items]
Sales	25,614	72,342	40,512
Roy Hill Holdings Pty Ltd. [member]
Disclosure of transactions between related parties [line items]
Dividends	186,813
Other sales		418,044	91,188
Purchase of material	210,455	2,338,625	1,300,296
Other associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales	78,048	37,410	34,620
Dividends	209,457
Other sales	14,704	63,298	69,151
Purchase of material	14,015	107,637	64,861
Purchase of fixed assets			84,839
Outsourced processing cost			4,086
Others	197	49,741	44,068
Associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales	106,904	182,549	80,783
Dividends	401,618
Other sales	14,712	483,856	165,078
Purchase of material	372,709	3,182,703	1,910,158
Purchase of fixed assets			84,839
Outsourced processing cost			4,086
Others	197	49,848	44,068
POSCO [Member]
Disclosure of transactions between related parties [line items]
Sales	87,165
Other sales	2
Others	10,446
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member]
Disclosure of transactions between related parties [line items]
Sales	7,502	5,859	6,790
Dividends	16,555
Other sales	7	11,113	11,123
Purchase of material			15
Purchase of fixed assets	80,306	491,624	772,846
Outsourced processing cost	0	158	220
Others	13,086	32,328	63,467
POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.)
Disclosure of transactions between related parties [line items]
Sales	133,743	695,451	418,619
Other sales	215	2,602	1,820
Outsourced processing cost	7,656	39,014	28,523
Others	18	627	639
POSCO ICT [member]
Disclosure of transactions between related parties [line items]
Sales	1,760	1,605	2,747
Dividends	4,970
Other sales	18	4,996	4,996
Purchase of fixed assets	39,932	324,275	374,914
Outsourced processing cost	10,190	46,037	41,384
Others	34,724	181,221	181,554
eNtoB Corporation [member]
Disclosure of transactions between related parties [line items]
Sales	3	14	15
Dividends	24
Other sales			60
Purchase of material	60,649	381,633	214,750
Purchase of fixed assets	9,706	65,254	34,217
Outsourced processing cost	32	115	76
Others	3,453	25,242	25,870
POSCO CHEMICAL CO., LTD [member]
Disclosure of transactions between related parties [line items]
Sales	89,535	318,808	258,154
Dividends	13,878
Other sales	44	31,917	34,944
Purchase of material	84,301	462,013	456,780
Purchase of fixed assets	4,757	14,358	23,003
Outsourced processing cost	56,325	298,431	304,135
Others	908	3,724	4,816
POSCO ENERGY CO., LTD. [member]
Disclosure of transactions between related parties [line items]
Sales	4,331	5,207	1,262
Other sales		1,450	2,396
Purchase of material	6,682	11,271	14,011
Purchase of fixed assets			3
Others	3,925	26,137	23,336
POSCO MOBILITY SOLUTION [Member]
Disclosure of transactions between related parties [line items]
Sales	176,534	807,925	381,591
Outsourced processing cost	8,802	45,758	32,325
Others	28	914	1,500
POSCO INTERNATIONAL CORPORATION [Member]
Disclosure of transactions between related parties [line items]
Sales	2,102,356	9,750,636	5,644,017
Dividends	62,093
Other sales		54,331	56,322
Purchase of material	244,230	1,299,561	342,520
Outsourced processing cost	768	988	11,371
Others	1,049	8,968	4,375
POSCO Thainox Public Company Limited [member]
Disclosure of transactions between related parties [line items]
Sales	49,359	309,295	311,924
Dividends	22,867
Other sales			137
Purchase of material			2,538
Others	1	69
POSCO Canada Ltd. [member]
Disclosure of transactions between related parties [line items]
Other sales		1,372	1,325
Purchase of material	77,225	202,523	162,385
POSCO Asia Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales		19,142	1,514,154
Other sales		426	1,060
Purchase of material		417	151,373
Purchase of fixed assets			4,331
Outsourced processing cost			1,508
Others		1,648	3,915
Qingdao Pohang Stainless Steel Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales	32,584	188,470	145,006
Other sales		8	66
Others		83	305
POSCO JAPAN Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales	28,790	1,613,634	1,076,987
Other sales		1
Purchase of material	835	27,937	37,210
Purchase of fixed assets	0	1,726	5,277
Others	16	4,894	6,225
POSCO-VIETNAM Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales	44,840	441,758	253,060
Other sales	513	975	605
Others		46	96
POSCO MEXICO S.A. DE C.V. [member]
Disclosure of transactions between related parties [line items]
Sales	102,776	460,773	168,188
Other sales	562	548	403
Others		1,494	2,000
POSCO Maharashtra Steel Private Limited [member]
Disclosure of transactions between related parties [line items]
Sales	171,806	899,675	328,943
Other sales	1,130	903	2,507
Others	120	229	479
POSCO(Suzhou) Automotive Processing Center Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales	42,320	161,808	112,925
Others	15	2
POSCO VST CO LTD [member]
Disclosure of transactions between related parties [line items]
Sales	28,475	201,517	208,464
Other sales			218
Others		20	156
POSCO INTERNATIONAL SINGAPORE PTE LTD [member]
Disclosure of transactions between related parties [line items]
Other sales	179	1,453
Purchase of material	379,823	1,704,193	600,580
POSCO ASSAN TST STEEL INDUSTRY [Member]
Disclosure of transactions between related parties [line items]
Sales	47,335	278,749	264,786
Other sales	537	734	948
Purchase of material		8	2,314
Others	8	24	18
Others [member]
Disclosure of transactions between related parties [line items]
Sales	203,869	1,337,458	806,672
Dividends	2,452
Other sales	6,574	56,161	22,069
Purchase of material	61,457	220,000	71,261
Purchase of fixed assets	18,844	63,116	45,695
Outsourced processing cost	53,139	276,202	238,496
Others	223,222	153,677	135,429
Subsidiaries [member]
Disclosure of transactions between related parties [line items]
Sales	3,355,083	17,497,784	11,904,304
Dividends	122,839
Other sales	9,781	168,990	140,999
Purchase of material	915,202	4,309,556	2,055,737
Purchase of fixed assets	153,545	960,353	1,260,286
Outsourced processing cost	136,912	706,703	658,038
Others	₩ 291,019	₩ 441,347	₩ 454,180

Related Party Transactions - Re

Related Party Transactions - Related Account Balances of Significant Transactions Between the Controlling Company and Related Parties (Detail) - Posco [member] - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	₩ 120,699	₩ 3,109,033
Other receivables	226,609	259,436
Total receivables	347,308	3,368,469
Trade accounts and notes payable		710,157
Accounts payable	19,588	391,092
Other payables	25,884	151,591
Total payables	45,472	1,252,840
SNNC [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	94	420
Other receivables		65
Total receivables	94	485
Trade accounts and notes payable		52,396
Total payables		52,396
Roy Hill Holdings Pty Ltd. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	23,400
Other receivables		34,356
Total receivables	23,400	34,356
Trade accounts and notes payable		436,774
Total payables		436,774
FQM Australia Holdings Pty Ltd [member]
Disclosure of transactions between related parties [line items]
Other receivables	202,562	181,122
Total receivables	202,562	181,122
Other associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	190	168,167
Other receivables	761	15,895
Total receivables	951	184,062
Trade accounts and notes payable		5,549
Accounts payable	74	187
Total payables	74	5,736
Associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	23,684	168,587
Other receivables	203,323	231,438
Total receivables	227,007	400,025
Trade accounts and notes payable		494,719
Accounts payable	74	187
Total payables	74	494,906
POSCO [Member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	75,343
Other receivables	6,600
Total receivables	81,943
Accounts payable	5,678
Other payables	14,663
Total payables	20,341
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	3,808	5,692
Other receivables	660	10
Total receivables	4,468	5,702
Accounts payable		97,007
Other payables		507
Total payables		97,514
POSCO STEELEON Co., Ltd. (formerly, POSCO COATED & COLOR STEEL Co., Ltd.)
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	818	95,001
Total receivables	818	95,001
Accounts payable		154
Other payables		5,082
Total payables		5,236
POSCO ICT [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	687	221
Other receivables		3
Total receivables	687	224
Trade accounts and notes payable		3,736
Accounts payable	859	155,064
Other payables	705	27,562
Total payables	1,564	186,362
eNtoB Corporation [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes payable		1,683
Accounts payable		23,851
Total payables		25,534
POSCO CHEMICAL CO., LTD [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	8,550	35,895
Other receivables		3,664
Total receivables	8,550	39,559
Trade accounts and notes payable		12,969
Accounts payable		57,498
Other payables	5,086	17,990
Total payables	5,086	88,457
POSCO ENERGY CO., LTD. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	3,400	1,485
Other receivables	462	292
Total receivables	3,862	1,777
Accounts payable		6,169
Other payables	1,593	10,066
Total payables	1,593	16,235
POSCO MOBILITY SOLUTION [Member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	489	133,608
Total receivables	489	133,608
Trade accounts and notes payable		71
Accounts payable		2,232
Other payables		5,104
Total payables		7,407
POSCO INTERNATIONAL CORPORATION [Member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	2,002	1,279,463
Other receivables		4
Total receivables	2,002	1,279,467
Trade accounts and notes payable		4,831
Accounts payable		483
Other payables	502	502
Total payables	502	5,816
POSCO Thainox Public Company Limited [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		54,804
Total receivables		54,804
Qingdao Pohang Stainless Steel Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		35,423
Total receivables		35,423
Accounts payable	122	83
Total payables	122	83
POSCO MEXICO S.A. DE C.V. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		179,428
Other receivables		251
Total receivables		179,679
POSCO Maharashtra Steel Private Limited [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		530,693
Other receivables	466	1,048
Total receivables	466	531,741
Accounts payable	486
Total payables	486
POSCO INTERNATIONAL SINGAPORE PTE LTD [Member]
Disclosure of transactions between related parties [line items]
Other receivables		14
Total receivables		14
Trade accounts and notes payable		169,565
Accounts payable		90
Total payables		169,655
POSCO ASSAN TST STEEL INDUSTRY [Member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		220,481
Other receivables	513	951
Total receivables	513	221,432
Accounts payable	104
Total payables	104
PT. KRAKATAU POSCO [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		1,395
Other receivables	8,967	14,750
Total receivables	8,967	16,145
Accounts payable	391
Total payables	391
Others [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	1,918	366,857
Other receivables	5,618	7,011
Total receivables	7,536	373,868
Trade accounts and notes payable		22,583
Accounts payable	11,874	48,274
Other payables	3,335	84,778
Total payables	15,209	155,635
Subsidiaries [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	97,015	2,940,446
Other receivables	23,286	27,998
Total receivables	120,301	2,968,444
Trade accounts and notes payable		215,438
Accounts payable	19,514	390,905
Other payables	25,884	151,591
Total payables	₩ 45,398	₩ 757,934

Related Party Transactions - _2

Related Party Transactions - Related Account Balances of Significant Transactions Between the Controlling Company and Related Parties (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Loans to related parties during the year	₩ 1,087,409	₩ 526,643	₩ 329,236
Posco [member] | Loans [member] | FQM Australia Holdings Pty Ltd [member]
Disclosure of transactions between related parties [line items]
Loans to related parties during the year	₩ 12,166	₩ 181,122

Related Party Transactions - _3

Related Party Transactions - Significant Transactions Between the Company, Excluding the Controlling Company, and Related Companies (Detail) - Company, excluding the controlling company [member] - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
POSCO PLANTEC Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales			₩ 2,558
Purchase of material			5
New Songdo International City Development, LLC [member]
Disclosure of transactions between related parties [line items]
Sales	₩ 270,465	₩ 286,731	125,909
Other sales		266	26,451
Other purchases	148	165	137
SNNC [member]
Disclosure of transactions between related parties [line items]
Sales	161,565	75,129	61,332
Other sales	412	743	30
Purchase of material	613,514	19,720	48,764
Other purchases	1,755	40,090	126,060
Chuncheon Energy Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales			213
Other sales			211
Noeul Green Energy Co., Ltd [member]
Disclosure of transactions between related parties [line items]
Sales	5,531	6,127	6,059
Other purchases	1,716	1,896	829
CSP - Compania Siderurgica do Pecem [member]
Disclosure of transactions between related parties [line items]
Sales	7,173	4,660	47,243
Other sales			11,432
Purchase of material	126,123	96,179	165,269
Other purchases	22,663		14,399
Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd [member]
Disclosure of transactions between related parties [line items]
Sales	17,824	46,323	42,189
Purchase of material	24,190	33,316	37,509
Other purchases		5,686	151
BX STEEL POSCO Cold Rolled Sheet Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Purchase of material			5,780
POS-SEAH STEEL WIRE (TIANJIN) CO., Ltd
Disclosure of transactions between related parties [line items]
Sales	14,863	14,673	8,757
PT. batutua tembaga raya [member]
Disclosure of transactions between related parties [line items]
Other sales			1,061
Purchase of material			28,174
POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales	32,007	39,887	29,964
Purchase of material	357	164	384
DMSA/AMSA [member]
Disclosure of transactions between related parties [line items]
Purchase of material		9,875	29,189
South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales			7
Dividends	14,541	27,828
Other sales	2,974	7,564	71,299
POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of transactions between related parties [line items]
Sales	134,498	65,746	31,068
Dividends	24,000
Other sales		10	19,530
Purchase of material	5,446	4,347	3,608
Other purchases		180	701
Samcheok Blue Power Co.,Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales	502,259	263,730	220,372
Dividends	9,992	405
Other sales	26
Other purchases		4
TK CHEMICAL CORPORATION [member]
Disclosure of transactions between related parties [line items]
Sales		14,906	104,749
Purchase of material		2,292	26,863
PocheonHwado Highway Corp Formerly, Metropolitan Outer Ring Expressway co., ltd [Member]
Disclosure of transactions between related parties [line items]
Sales	93,428	62,829	17,631
UITrans LRT Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Sales		10,736	2,263
Roy Hill Holdings Pty Ltd [member]
Disclosure of transactions between related parties [line items]
Dividends	46,780	104,903
Other sales			22,797
Purchase of material	1,463,383
Other associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales	547,627	184,606	162,257
Dividends	137,733	49,031
Other sales	3,026	15,449	49,158
Purchase of material	507,705	31,379	49,315
Other purchases	122,092	18,505	37,582
Associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales	1,787,240	1,076,083	862,571
Dividends	233,046	182,167
Other sales	6,438	24,032	201,969
Purchase of material	2,740,718	197,272	394,860
Other purchases	₩ 148,374	₩ 66,526	₩ 179,859

Related Party Transactions - _4

Related Party Transactions - Related Account Balances of Significant Transactions Between the Company, Excluding the Controlling Company, and Related Parties (Detail) - Company, excluding the controlling company [member] - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Other receivables	₩ 7,110
Total receivables	7,110
Trade accounts and notes payable	571,084
Total payables	571,084
New Songdo International City Development, LLC [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	63,413	₩ 49,748
Other receivables	16,858	16,261
Total receivables	80,271	66,009
Other payables	39,664
Total payables	39,664
Chuncheon Energy Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes payable		257
Other payables	50
Total payables	50	257
Samcheok Blue Power Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	107,119	120,672
Total receivables	107,119	120,672
Other payables	18,224	23,683
Total payables	18,224	23,683
Nickel mining company SAS [member]
Disclosure of transactions between related parties [line items]
Loan	63,024	62,611	₩ 62,420
Other receivables	263	477
Total receivables	63,287	63,088
Other payables	358
Total payables	358
CSP — Compania Siderurgica do Pecem [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	3
Total receivables	3
Trade accounts and notes payable		3,144
Total payables		3,144
Zhongyue POSCO (Qinhuangdao) Tinplate Industrial Co., Ltd [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		9,108
Total receivables		9,108
Trade accounts and notes payable		4,393
Total payables		4,393
POSCO SeAH Steel Wire(Nantong) Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	7,096	19,271
Total receivables	7,096	19,271
Other payables		18
Total payables		18
South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of transactions between related parties [line items]
Loan	0	47,423	91,003
Total receivables		47,423
POSCO MITSUBISHI CARBON TECHNOLOGY [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	12,589	8,183
Other receivables	52
Total receivables	12,641	8,183
Trade accounts and notes payable	1,198	1,083
Other payables	4
Total payables	1,202	1,083
Pocheon-Hwado Highway Corp.[Member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	16,297	14,162
Total receivables	16,297	14,162
UITrans LRT Co Ltd [Member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable		7,048
Loan	36,510	29,099	23,452
Total receivables	36,510	36,147
Other payables	1,999
Total payables	1,999
Roy Hill Holdings Pty Ltd. [member]
Disclosure of transactions between related parties [line items]
Other receivables		8,589
Total receivables		8,589
SNNC [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	7,827	4,708
Other receivables	51
Total receivables	7,878	4,708
Trade accounts and notes payable	44,124	143
Other payables	198
Total payables	44,322	143
POSCO(Guangdong) Automotive Steel Co, Ltd [member]
Disclosure of transactions between related parties [line items]
Loan	35,131
Total receivables	35,131
Other associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	98,920	34,254
Loan	185,022	179,036
Other receivables	112,538	106,186
Total receivables	396,480	319,476
Trade accounts and notes payable	54,708	97
Other payables	25,241	31,047
Total payables	79,949	31,144
Associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Trade accounts and notes receivable	313,264	267,154
Loan	319,687	318,169	₩ 355,350
Other receivables	136,872	131,513
Total receivables	769,823	716,836
Trade accounts and notes payable	671,114	9,117
Other payables	85,738	54,748
Total payables	₩ 756,852	₩ 63,865

Related Party Transactions - _5

Related Party Transactions - Related Account Balances of Significant Transactions Between the Company, Excluding the Controlling Company, and Related Parties (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021
Company, excluding the controlling company [member]
Disclosure of transactions between related parties [line items]
Bad-debt allowance for receivables	₩ 131,588	₩ 114,315

Related Party Transactions - _6

Related Party Transactions - Significant Financial Transactions Between the Company, Excluding the Controlling Company, and Related Parties (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Lend	₩ 1,087,409	₩ 526,643	₩ 329,236
Collect	(1,086,964)	(568,536)	(138,270)
Company, excluding the controlling company [member] | UITrans LRT Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Beginning	29,099	23,452
Lend	7,460	5,682
Collect	(5)	0
Others	(44)	(35)
Ending	36,510	29,099	23,452
Company, excluding the controlling company [member] | South-East Asia Gas Pipeline Company Ltd. [member]
Disclosure of transactions between related parties [line items]
Beginning	47,423	91,003
Lend	0	0
Collect	(45,639)	(49,928)
Others	(1,784)	6,348
Ending	0	47,423	91,003
Company, excluding the controlling company [member] | PT. Tanggamus Electric Power [member]
Disclosure of transactions between related parties [line items]
Beginning	4,690	4,304
Lend	0	0
Collect	0	0
Others	324	386
Ending	5,014	4,690	4,304
Company, excluding the controlling company [member] | PT. Wampu Electric Power [member]
Disclosure of transactions between related parties [line items]
Beginning	5,651	5,186
Lend	0	0
Collect	(1,876)	0
Others	213	465
Ending	3,988	5,651	5,186
Company, excluding the controlling company [member] | PT. POSMI Steel Indonesia [member]
Disclosure of transactions between related parties [line items]
Beginning	2,371	2,176
Lend	0	0
Collect	(2,371)	0
Others	0	195
Ending	0	2,371	2,176
Company, excluding the controlling company [member] | Nickel mining company SAS [member]
Disclosure of transactions between related parties [line items]
Beginning	62,611	62,420
Lend	0	0
Collect	0	0
Others	413	191
Ending	63,024	62,611	62,420
Company, excluding the controlling company [member] | KRAKATAU POS-CHEM DONG-SUH CHEMICAL [member]
Disclosure of transactions between related parties [line items]
Beginning	4,742	5,440
Lend	0	0
Collect	(1,264)	0
Others	324	(698)
Ending	3,802	4,742	5,440
Company, excluding the controlling company [member] | POS-SeAH Steel Wire (Thailand) Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Beginning	7,113	6,528
Lend	0	0
Collect	0	0
Others	491	585
Ending	7,604	7,113	6,528
Company, excluding the controlling company [member] | AMCI (WA) PTY LTD [member]
Disclosure of transactions between related parties [line items]
Beginning	91,665	83,291
Lend	6,975	6,154
Collect	0	0
Others	5,641	2,220
Ending	104,281	91,665	83,291
Company, excluding the controlling company [member] | POS-AUSTEM YANTAI AUTOMOTIVE COLTD [member]
Disclosure of transactions between related parties [line items]
Beginning	5,928	5,440
Lend	0	0
Collect	(6,548)	0
Others	620	488
Ending	0	5,928	5,440
Company, excluding the controlling company [member] | POS-AUSTEM WUHAN AUTOMOTIVE CO.,LTD [member]
Disclosure of transactions between related parties [line items]
Beginning	9,484	8,704
Lend	0	0
Collect	0	0
Others	654	780
Ending	10,138	9,484	8,704
Company, excluding the controlling company [member] | Hyo-chun Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Beginning	2,382	2,382
Lend	0	0
Collect	0	0
Others	0	0
Ending	2,382	2,382	2,382
Company, excluding the controlling company [member] | POS-AUSTEM Suzhou Automotive Co., Ltd [member]
Disclosure of transactions between related parties [line items]
Beginning	17,783	16,320
Lend	0	0
Collect	(6,069)	0
Others	959	1,463
Ending	12,673	17,783	16,320
Company, excluding the controlling company [member] | CAML RESOURCES PTY LTD [member]
Disclosure of transactions between related parties [line items]
Beginning	0	3,312
Lend		0
Collect		(3,312)
Others		0
Ending		0	3,312
Company, excluding the controlling company [member] | Shinahn wind Power generation [Member]
Disclosure of transactions between related parties [line items]
Beginning	0	37
Lend		60
Collect		0
Others		(97)
Ending		0	37
Company, excluding the controlling company [member] | FQM Australia Holdings Pty Ltd [Member]
Disclosure of transactions between related parties [line items]
Beginning	27,227	0
Lend	7,935	27,242
Collect	0	0
Others	(122)	(15)
Ending	35,040	27,227	0
Company, excluding the controlling company [member] | POHANG E&E Coi., LTD [member]
Disclosure of transactions between related parties [line items]
Beginning	0
Lend	100
Collect	0
Others	0
Ending	100	0
Company, excluding the controlling company [member] | POSCO(Guangdong) Automotive Steel Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Beginning	0
Lend	35,131
Collect	0
Others	0
Ending	35,131	0
Company, excluding the controlling company [member] | PT. Batutua Tembaga Raya [member]
Disclosure of transactions between related parties [line items]
Beginning	0	35,355
Lend		0
Collect		0
Others		(35,355)
Ending		0	35,355
Company, excluding the controlling company [member] | Associates and joint ventures [member]
Disclosure of transactions between related parties [line items]
Beginning	318,169	355,350
Lend	57,601	39,138
Collect	(63,772)	(53,240)
Others	7,689	(23,079)
Ending	₩ 319,687	₩ 318,169	₩ 355,350

Related Party Transactions - De

Related Party Transactions - Details of Compensation to Key Management Officers (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related party transactions [abstract]
Short-term benefits	₩ 174,629	₩ 111,900	₩ 109,546
Long-term benefits	9,182	18,115	15,288
Retirement benefits	22,106	22,239	16,238
Compensation to key management	₩ 205,917	₩ 152,254	₩ 141,072

Commitments and Contingencies -

Commitments and Contingencies - Contingent Liabilities on Outstanding Guarantees (Detail) - Dec. 31, 2022 - Contingent liabilities on outstanding guarantees [member] € in Millions, ₩ in Millions, ₨ in Millions, ฿ in Millions, Rp in Millions, R$ in Millions, $ in Millions, $ in Millions	USD ($)	KRW (₩)	THB (฿)	IDR (Rp)	BRL (R$)	EUR (€)	AUD ($)	INR (₨)
USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	$ 2,428,410,394	₩ 3,077,525
KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		697,286
Indonesia, Rupiahs
Disclosure of contingent liabilities [line items]
Guarantee amount		101,813		Rp 1,258,510,000,000
India, Rupees
Disclosure of contingent liabilities [line items]
Guarantee amount		11,823						₨ 772,210,905
THB [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		174,685	฿ 4,765,000,000
EUR [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		62,155				€ 46,000,000
AUD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		12,226					$ 14,242,095
BRL [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		111,244			R$ 464060000
POSCO COATED STEEL (THAILAND) CO., LTD. [member] | SMBC [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		174,685	4,765,000,000
POSCO MEXICO S.A. DE C.V. [member] | BOA and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	60,000,000	76,038
POSCO-VIETNAM Co., Ltd. [member] | SMBC [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	109,999,999	139,403
Top of range [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	3,773,148,900	4,781,713
Top of range [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		1,648,491
Top of range [member] | Indonesia, Rupiahs
Disclosure of contingent liabilities [line items]
Guarantee amount		107,638		1,330,510,000,000
Top of range [member] | India, Rupees
Disclosure of contingent liabilities [line items]
Guarantee amount		11,823						772,210,905
Top of range [member] | THB [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		201,667	5,501,000,000
Top of range [member] | EUR [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		62,155				46,000,000
Top of range [member] | AUD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		12,226					14,242,095
Top of range [member] | BRL [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		111,244			464,060,000
Top of range [member] | POSCO COATED STEEL (THAILAND) CO., LTD. [member] | SMBC [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		201,667	฿ 5,501,000,000
Top of range [member] | POSCO MEXICO S.A. DE C.V. [member] | BOA and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	60,000,000	76,038
Top of range [member] | POSCO-VIETNAM Co., Ltd. [member] | SMBC [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	156,000,000	197,699
PT Bio Inti Agrindo [member] | KSU Mandob [member] | Bank Muamalat [member] | Indonesia, Rupiahs
Disclosure of contingent liabilities [line items]
Guarantee amount		6,472		80,000,000,000
PT Bio Inti Agrindo [member] | Top of range [member] | KSU Mandob [member] | Bank Muamalat [member] | Indonesia, Rupiahs
Disclosure of contingent liabilities [line items]
Guarantee amount		6,472		80,000,000,000
POSCO HOLDINGS INC.[member] | BNDES [member] | BRL [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		111,244			464,060,000
POSCO HOLDINGS INC.[member] | POSCO Asia Co., Ltd. [member] | Credit Agricole And Others [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	0	0
POSCO HOLDINGS INC.[member] | POSCO ASSAN TST STEEL INDUSTRY [member] | SOCIETE GENERALE and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	131,874,750	167,126
POSCO HOLDINGS INC.[member] | POSCO Maharashtra Steel Private Limited [member] | SMBC and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	109,784,000	139,129
POSCO HOLDINGS INC.[member] | PT. KRAKATAU POSCO [member] | Export-Import Bank of Korea and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	1,250,244,173	1,584,435
POSCO HOLDINGS INC.[member] | CSP - Compania Siderurgica do Pecem [member] | Export-Import Bank of Korea and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	358,266,014	454,030
POSCO HOLDINGS INC.[member] | Nickel mining company SAS [member] | SMBC [member] | EUR [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		62,155				46,000,000
POSCO HOLDINGS INC.[member] | Top of range [member] | BNDES [member] | BRL [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		111,244			R$ 464060000
POSCO HOLDINGS INC.[member] | Top of range [member] | POSCO Asia Co., Ltd. [member] | Credit Agricole And Others [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	205,000,000	259,797
POSCO HOLDINGS INC.[member] | Top of range [member] | POSCO ASSAN TST STEEL INDUSTRY [member] | SOCIETE GENERALE and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	131,874,750	167,126
POSCO HOLDINGS INC.[member] | Top of range [member] | POSCO Maharashtra Steel Private Limited [member] | SMBC and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	139,784,000	177,149
POSCO HOLDINGS INC.[member] | Top of range [member] | PT. KRAKATAU POSCO [member] | Export-Import Bank of Korea and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	2,164,300,000	2,742,818
POSCO HOLDINGS INC.[member] | Top of range [member] | CSP - Compania Siderurgica do Pecem [member] | Export-Import Bank of Korea and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	420,000,000	532,264
POSCO HOLDINGS INC.[member] | Top of range [member] | Nickel mining company SAS [member] | SMBC [member] | EUR [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		62,155				€ 46,000,000
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | POSCO E&C Vietnam Co., Ltd. [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	36,000,000	45,623
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | PT. POSCO E&C INDONESIA [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	25,900,000	32,823
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | New Songdo International City Development, LLC [member] | Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		453,400
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | UITrans LRT Co., Ltd. [member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		176,600
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Chun-cheon Energy Co., Ltd. [member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		143,110
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Pohang E&E Co,. Ltd. [member] | Heungkuk Life Insurance Co. LTD [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		50,492
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | JB CLARK HILLS [member] | HSBC and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	27,500,000	34,851
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Pureun Tongyeong Enviro Co Ltd [member] | KDB Bank and others [Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		13,035
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Pure Gimpo Co Ltd [member] | KDB Bank and others [Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		27,213
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Clean Iksan Co Ltd [member] | SAMSUNG FIRE & MARINE INSURANCE [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		27,710
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Busan Sanseong Tunnel and others [member] | Balhae Infrastructure Fund and others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		547,785
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Pocheon-Hwado Highway Corp.[Member] | IncheonGimpo Expressway Co., Ltd and other [Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		95,137
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | IncheonGimpo Expressway Co., Ltd and other [Member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		1,627,863
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | POSCO E&C Vietnam Co., Ltd. [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	36,000,000	45,623
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | PT. POSCO E&C INDONESIA [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	25,900,000	32,823
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | New Songdo International City Development, LLC [member] | Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		520,000
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | UITrans LRT Co., Ltd. [member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		205,051
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Chun-cheon Energy Co., Ltd. [member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		149,200
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Pohang E&E Co,. Ltd. [member] | Heungkuk Life Insurance Co. LTD [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		71,930
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | JB CLARK HILLS [member] | HSBC and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	30,000,000	38,019
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Pureun Tongyeong Enviro Co Ltd [member] | KDB Bank and others [Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		22,714
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Pure Gimpo Co Ltd [member] | KDB Bank and others [Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		51,559
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Clean Iksan Co Ltd [member] | SAMSUNG FIRE & MARINE INSURANCE [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		44,054
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Busan Sanseong Tunnel and others [member] | Balhae Infrastructure Fund and others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		1,491,670
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | Pocheon-Hwado Highway Corp.[Member] | IncheonGimpo Expressway Co., Ltd and other [Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		319,526
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member] | IncheonGimpo Expressway Co., Ltd and other [Member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		3,823,072
POSCO ICT [member] | PT.POSCO ICT INDONESIA [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	300,000	380
POSCO ICT [member] | UITrans LRT Co., Ltd. [member] | Kookmin Bank[Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		35,261
POSCO ICT [member] | Busan Sanseong Tunnel [member] | Kookmin Bank[Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		6,391
POSCO ICT [member] | IncheonGimpo Expressway Co., Ltd and other [Member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		94,474
POSCO ICT [member] | Top of range [member] | PT.POSCO ICT INDONESIA [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	1,500,000	1,901
POSCO ICT [member] | Top of range [member] | UITrans LRT Co., Ltd. [member] | Kookmin Bank[Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		43,736
POSCO ICT [member] | Top of range [member] | Busan Sanseong Tunnel [member] | Kookmin Bank[Member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		7,621
POSCO ICT [member] | Top of range [member] | IncheonGimpo Expressway Co., Ltd and other [Member] | Kookmin Bank and Others [member] | KRW [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		216,051
POSCO ENERGY CO., LTD | PT. Krakatau Posco Energy [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	65,102,271	82,504
POSCO ENERGY CO., LTD | Top of range [member] | PT. Krakatau Posco Energy [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	65,102,271	82,504
POSCO AUSTRALIA PTY LTD [member] | Department of Trade and Investment (NSW Government) [member] | Woori Bank and others [member] | AUD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		12,226					14,242,095
POSCO AUSTRALIA PTY LTD [member] | Top of range [member] | Department of Trade and Investment (NSW Government) [member] | Woori Bank and others [member] | AUD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		12,226					$ 14,242,095
POSCO INTERNATIONAL Corporation [member] | POSCO ASSAN TST STEEL INDUSTRY [member] | ING [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	14,652,750	18,569
POSCO INTERNATIONAL Corporation [member] | GLOBAL KOMSCO Daewoo LLC [member] | Hana Bank [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	6,300,000	7,984
POSCO INTERNATIONAL Corporation [member] | POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE. LTD. (Formerly, Daewoo Global Development Pte., Ltd.) | Export-Import Bank of Korea [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	150,000,000	190,095
POSCO INTERNATIONAL Corporation [member] | POSCO INTERNATIONAL POWER (PNGLAE) LIMITED [member] | KDB Bank [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	17,400,000	22,051
POSCO INTERNATIONAL Corporation [member] | GOLDEN LACE POSCO INTERNATIONAL CO., LTD. [member] | Shinhan Bank and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	11,000,000	13,940
POSCO INTERNATIONAL Corporation [member] | POSCO INTERNATIONAL AMERICA CORP [Member] | Bank Mendes Gans [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	15,002,042	19,012
POSCO INTERNATIONAL Corporation [member] | GRAIN TERMINAL HOLDINGS PTE. LTD. [member] | Export-Import Bank of Korea and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	27,000,000	34,217
POSCO INTERNATIONAL Corporation [member] | SHERRITT INTERNATIONAL CORP [member] | Export-Import Bank of Korea [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	860,880	1,091
POSCO INTERNATIONAL Corporation [member] | PT Bio Inti Agrindo [member] | BTPN and others [member] | Indonesia, Rupiahs
Disclosure of contingent liabilities [line items]
Guarantee amount		95,341		1,178,510,000,000
POSCO INTERNATIONAL Corporation [member] | POSCO INTERNATIONAL JAPAN CORP [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount | $	7,521,345
POSCO INTERNATIONAL Corporation [member] | POSCO INTERNATIONAL JAPAN CORP [Member] | Bank Mendes Gans [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		9,532
POSCO INTERNATIONAL Corporation [member] | POSCO INTERNATIONAL EP MALAYSIA SDN. BHD [Member] | SC, Malaysia [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	6,000,000	7,604
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount | $	50,000,000
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | POSCO ASSAN TST STEEL INDUSTRY [member] | ING [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	14,652,750	18,569
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | POSCO SINGAPORE LNG TRADING PTE. LTD [member] | Bank Mendes Gans [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount		63,365
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | GLOBAL KOMSCO Daewoo LLC [member] | Hana Bank [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	6,650,000	8,428
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | POSCO INTERNATIONAL GLOBAL DEVELOPMENT PTE. LTD. (Formerly, Daewoo Global Development Pte., Ltd.) | Export-Import Bank of Korea [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	180,000,000	228,114
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | POSCO INTERNATIONAL POWER (PNGLAE) LIMITED [member] | KDB Bank [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	20,880,000	26,461
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | GOLDEN LACE POSCO INTERNATIONAL CO., LTD. [member] | Shinhan Bank and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	13,200,000	16,728
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | GRAIN TERMINAL HOLDINGS PTE. LTD. [member] | Export-Import Bank of Korea and others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	27,000,000	34,217
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | SHERRITT INTERNATIONAL CORP [member] | Export-Import Bank of Korea [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	21,818,182	27,650
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | PT Bio Inti Agrindo [member] | BTPN and others [member] | Indonesia, Rupiahs
Disclosure of contingent liabilities [line items]
Guarantee amount		101,166		Rp 1,250,510,000,000
POSCO INTERNATIONAL Corporation [member] | Top of range [member] | POSCO INTERNATIONAL EP MALAYSIA SDN. BHD [Member] | SC, Malaysia [Member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	6,000,000	7,604
POSCO Maharashtra Steel Private Limited [member] | Gail India and others | HSBC and others [member] | India, Rupees
Disclosure of contingent liabilities [line items]
Guarantee amount		11,823						772,210,905
POSCO Maharashtra Steel Private Limited [member] | Top of range [member] | Gail India and others | HSBC and others [member] | India, Rupees
Disclosure of contingent liabilities [line items]
Guarantee amount		11,823						₨ 772,210,905
POSCO STEELEON Co., Ltd. | Myanmar POSCO C&C Company, Limited [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	11,952,170	15,147
POSCO STEELEON Co., Ltd. | Top of range [member] | Myanmar POSCO C&C Company, Limited [member] | POSCO Asia Co., Ltd. And others [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	13,986,947	17,726
POSCO [member] | LLP POSUK Titanium [member] | SMBC [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	13,250,000	16,792
POSCO [member] | Top of range [member] | LLP POSUK Titanium [member] | SMBC [member] | USD [member]
Disclosure of contingent liabilities [line items]
Guarantee amount	$ 13,500,000	₩ 17,109

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Detail) ₩ in Thousands, T in Thousands, $ in Millions		12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 KRW (₩) Vessel T	Dec. 31, 2022 USD ($)	Dec. 31, 2021 KRW (₩)
Disclosure of contingent liabilities [line items]
Borrowings		₩ 24,305,662,000		₩ 21,741,216,000
Posco [member]
Disclosure of contingent liabilities [line items]
Nickel contracts terms		1 year
Remaining iron ore to be purchased | T		66,000
Remaining coal to be purchased | T		4,000
Liquefied natural gas to be purchased | T		550
Liquefied natural gas terms		20 years
Number of vessels for transportation of raw materials | Vessel		36
Average remaining contract period		8 years
Posco [member] | Top of range [member] | Korea National Oil Corporation [member]
Disclosure of contingent liabilities [line items]
Iron ore and coal contracts terms		3 years
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member]
Disclosure of contingent liabilities [line items]
Litigation Mediation Price | $			$ 2,300
Damage of principal and interest amount		₩ 3,346,129,000
capital investment obligation		43,189,000
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Korea Housing and Urban Corporation [Member]
Disclosure of contingent liabilities [line items]
Damage of principal and interest amount		1,861,391,000
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member] | Top of range [member]
Disclosure of contingent liabilities [line items]
Foreign currency guarantee | $	$ 1,572
Woori Bank and others [member]
Disclosure of contingent liabilities [line items]
Foreign currency guarantee | $	$ 753
POSCO ICT [member] | Korea Software Financial Cooperative [member]
Disclosure of contingent liabilities [line items]
Contingent liabilities guarantee amount		83,547,000
POSCO ICT [member] | Seoul Guarantee Insurance [member]
Disclosure of contingent liabilities [line items]
Contingent liabilities guarantee amount		58,091,000
POSCO ICT [member] | Engineering Guarantee Insurance [member]
Disclosure of contingent liabilities [line items]
Contingent liabilities guarantee amount		153,000
POSCO ICT [member] | Construction Guarantee Cooperative [Member]
Disclosure of contingent liabilities [line items]
Contingent liabilities guarantee amount		5,333,000
POSCO INTERNATIONAL CORPORATION [Member] | Korea Ambatovy Consortium [member]
Disclosure of contingent liabilities [line items]
Percentage of rights and obligations	15.33%
POSCO INTERNATIONAL CORPORATION [Member] | Ship Purchase Agreements [Member]
Disclosure of contingent liabilities [line items]
Contingent liabilities guarantee amount | $			$ 170
POSCO HOLDINGS INC [Member]
Disclosure of contingent liabilities [line items]
Borrowings		1,020
POSCO HOLDINGS INC [Member] | Treasury shares [member]
Disclosure of contingent liabilities [line items]
Treasury shares		3,128,714,000
POSCO HOLDINGS INC [Member] | Long-term borrowings [member]
Disclosure of contingent liabilities [line items]
Borrowings		₩ 4,120

Commitments and Contingencies_3

Commitments and Contingencies - Litigations in Progress (Detail) - 12 months ended Dec. 31, 2022 ₺ in Millions, ₫ in Millions, ₩ in Millions, ₨ in Millions, ₨ in Millions, ฿ in Millions, ¥ in Millions, Rp in Millions, R$ in Millions, $ in Millions, $ in Millions

KRW (₩) Lawsuits Cash_Generating_Units

USD ($)

KRW (₩)

THB (฿)

IDR (Rp)

BRL (R$)

INR (₨)

CAD ($)

PKR (₨)

VND (₫)

CNY (¥)

TRY (₺)

Disclosure of contingent liabilities [line items]

Estimated lawsuits | Lawsuits

57

Lawsuits provision [member]

Disclosure of contingent liabilities [line items]

Provision for legal contingencies and claims | ₩

₩ 52,530

POSCO HOLDINGS INC. [member]

Disclosure of contingent liabilities [line items]

Description

POSCO HOLDINGS INC. has provided 3 blank checks to Korea Energy Agency as collateral for long-term foreign currency borrowings.

POSCO INTERNATIONAL CORPORATION [Member]

Disclosure of contingent liabilities [line items]

Description

As of December 31, 2022, POSCO INTERNATIONAL Corporation has provided 30 blank promissory notes and 23 blank checks to Korea Energy Agency and others as collateral for the guarantee on performance for contracts and others.

POSCO ENGINEERING & CONSTRUCTION CO., LTD [member]

Disclosure of contingent liabilities [line items]

Description

As of December 31, 2022, POSCO ENGINEERING & CONSTRUCTION CO., LTD. has provided 34 blank checks and 4 blank promissory notes as collateral for agreements and outstanding loans, and has provided joint guarantee of ￦7,515,815 million for guarantee that partners had issued from Korea Housing & Urban Guarantee Corporation and others.

POSCO ICT [member]

Disclosure of contingent liabilities [line items]

Description

As of December 31, 2022, POSCO ICT has provided 6 blank checks to financial institutions as collateral for the guarantee on performance for contracts and others.

Litigations in progress [member] | POSCO HOLDINGS INC. [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount | ₩

₩ 9,445

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO INTERNATIONAL CORPORATION [Member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

6

Claim amount | ₩

15,116

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO INTERNATIONAL CORPORATION [Member] | CAD [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

73,895

$ 79,000

Description

Lawsuit on claim for damages

Litigations in progress [member] | POSCO INTERNATIONAL CORPORATION [Member] | India [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount

68,426

₨ 4,469,396

Description

Lawsuit on claim for payment on guarantees and others(*1)

Litigations in progress [member] | POSCO INTERNATIONAL CORPORATION [Member] | US [member]

Disclosure of contingent liabilities [line items]

Legal actions

5

Claim amount

$ 73,141

92,692

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO INTERNATIONAL CORPORATION [Member] | Pakistan [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

697

₨ 124,775

Description

Lawsuit on claim for damages

Litigations in progress [member] | POSCO ENGINEERING & CONSTRUCTION CO., LTD [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

107

Claim amount | ₩

546,364

Description

Lawsuit on claim for damages and others(*1)

Litigations in progress [member] | Posco 1 [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

46

Claim amount | ₩

254,990

Description

Lawsuit on claim for employee status and others

Litigations in progress [member] | POSCO ICT [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

14

Claim amount | ₩

7,751

Description

Lawsuit on claim for damages and others(*1)

Litigations in progress [member] | POSCO ICT [member] | Brazil [Member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

1,818

R$ 7586

Description

Lawsuit on claim for damages

Litigations in progress [member] | POSCO A&C [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

8

Claim amount | ₩

11,556

Description

Lawsuit on claim for payment on construction and others(*1)

Litigations in progress [member] | POSCO ENERGY CO., LTD. [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount | ₩

66,505

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO E&C CHINA Co., Ltd. [member] | China [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount

4,506

¥ 24,837

Description

Lawsuit over contract dispute and others

Litigations in progress [member] | POSCO O&M Co., Ltd. [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

3

Claim amount | ₩

1,035

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO ENGINEERING (THAILAND) CO., LTD. [member] | Thailand [Member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

5,900

฿ 160,929

Description

Lawsuit on claim for payment on construction

Litigations in progress [member] | eNtoB Corporation [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount | ₩

14

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | PT. KRAKATAU POSCO [member] | Indonesia [Member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

3,094

Rp 38,243,593

Description

Lawsuit on claim for wages

Litigations in progress [member] | POSCO SOUTH EAST ASIA PTE. LTD [Member] | US [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount

15,900

20,150

Description

Lawsuit over contract dispute and others

Litigations in progress [member] | POSCO TNPC Otomotiv Celik San. Ve Tic. A.S [member] | Turkey [Member]

Disclosure of contingent liabilities [line items]

Legal actions

3

Claim amount

6

₺ 93

Description

Lawsuit over industrial accidents and others(*1)

Litigations in progress [member] | Brazil Sao Paulo Steel Processing Center [member] | Brazil [Member]

Disclosure of contingent liabilities [line items]

Legal actions

4

Claim amount

921

3,844

Description

Lawsuit on claim for labor and others

Litigations in progress [member] | POSCO ENGINEERING & CONSTRUCTION DO BRAZIL LTDA. [member] | Brazil [Member]

Disclosure of contingent liabilities [line items]

Legal actions

79

Claim amount

44,532

R$ 185766

Litigations in progress [member] | POSCO ASSAN TST STEEL INDUSTRY [member] | US [member]

Disclosure of contingent liabilities [line items]

Legal actions

6

Claim amount

133

168

Description

Lawsuit on claim for labor and others(*1)

Litigations in progress [member] | POSCO INDIA PROCESSING CENTER PRIVATE LIMITED [Member] | India [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

833

54,420

Description

Lawsuit on claim for damages

Litigations in progress [member] | POSCO-India Pune Processing Center. Pvt. Ltd. [member] | India [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

33,648

2,197,800

Description

Lawsuit over contract dispute

Litigations in progress [member] | POSCO CHEMCAL CO., LTD [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

3

Claim amount | ₩

1,514

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO M-TECH [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount | ₩

45

Description

Lawsuit on claim for damages and others

Litigations in progress [member] | POSCO Engineering and Construction India Private Limited [member] | India [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount

7,563

493,968

Description

Lawsuit on claim for payment and others

Litigations in progress [member] | POSCO Engineering and Construction India Private Limited [member] | Brazil [Member]

Disclosure of contingent liabilities [line items]

Description

Lawsuit on claim for payment on construction and others(*1)

Litigations in progress [member] | POSCO Thainox Public Company Limited [member] | Thailand [Member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

110

฿ 3,000

Description

Lawsuit on invalidation of a check

Litigations in progress [member] | POSCO MOBILITY SOLUTION (formerly, POSCO SPS CORPORATION) [member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount | ₩

6

Description

Lawsuit on claim for wages

Litigations in progress [member] | POSCO INTERNATIONAL VIETNAM CO., LTD. [member] | Vietnam [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

31

₫ 579,407

Description

Lawsuit over contract dispute(*1)

Litigations in progress [member] | QINGDAO POHANG STAINLESS STEEL CO., LTD. [member] | China [member]

Disclosure of contingent liabilities [line items]

Legal actions

4

Claim amount

10,117

55,760

Description

Lawsuit over contract dispute

Litigations in progress [member] | POSCO(Yantai) Automotive Processing Center Co., Ltd [Member] | China [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

42

231

Description

Lawsuit on claim for labor and others

Litigations in progress [member] | POSCO(Dalian) IT Center Development Co., Ltd. [member] | China [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

9

¥ 49

Description

Lawsuit on claim for damages

Litigations in progress [member] | POSCO Humans [Member] | Korea [member]

Disclosure of contingent liabilities [line items]

Legal actions

2

Claim amount | ₩

233

Description

Lawsuit on claim for invalidation of dismissal(*1)

Litigations in progress [member] | POSCO-India Private Limited [member] | India [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

38

₨ 2,466

Description

Lawsuit on claim for wages

Litigations in progress [member] | POSCO INTERNATIONAL SINGAPORE PTE LTD [Member] | US [member]

Disclosure of contingent liabilities [line items]

Legal actions

1

Claim amount

$ 54,665

₩ 69,276

Description

Lawsuit on claim for damages

Commitments and Contingencies_4

Commitments and Contingencies - Details of Other Major contingencies (Detail)	12 Months Ended
	Dec. 31, 2022
Posco [member]
Disclosure of contingent liabilities [line items]
Description	POSCO HOLDINGS INC. has provided 3 blank checks to Korea Energy Agency as collateral for long-term foreign currency borrowings.
POSCO INTERNATIONAL CORPORATION [Member]
Disclosure of contingent liabilities [line items]
Description	As of December 31, 2022, POSCO INTERNATIONAL Corporation has provided 30 blank promissory notes and 23 blank checks to Korea Energy Agency and others as collateral for the guarantee on performance for contracts and others.
POSCO ENGINEERING & CONSTRUCTION CO., LTD. [member]
Disclosure of contingent liabilities [line items]
Description	As of December 31, 2022, POSCO ENGINEERING & CONSTRUCTION CO., LTD. has provided 34 blank checks and 4 blank promissory notes as collateral for agreements and outstanding loans, and has provided joint guarantee of ￦7,515,815 million for guarantee that partners had issued from Korea Housing & Urban Guarantee Corporation and others.
POSCO ICT [member]
Disclosure of contingent liabilities [line items]
Description	As of December 31, 2022, POSCO ICT has provided 6 blank checks to financial institutions as collateral for the guarantee on performance for contracts and others.

Additional Information of Sta_3

Additional Information of Statement of Cash Flows - Changes in Operating Assets and Liabilities (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from (used in) operating activities [abstract]
Trade accounts and notes receivable	₩ 531,848	₩ (1,492,664)	₩ 818,857
Other receivables	(96,141)	(441,412)	210,630
Inventories	(195,309)	(6,346,717)	1,443,931
Other current assets	(230,084)	(210,614)	51,750
Other non-current assets	42,767	(246,066)	(92,068)
Trade accounts and notes payable	141,925	1,401,942	594,414
Other payables	611,932	170,209	(78,997)
Other current liabilities	(213,738)	241,998	101,027
Provisions	(295,624)	(154,471)	(81,988)
Payments of severance benefits	(300,353)	(253,207)	(225,293)
Plan assets	(59,461)	(186,548)	(94,121)
Other non-current liabilities	(306,251)	473,240	207,766
Changes in operating cash flows	₩ (368,489)	₩ (7,044,310)	₩ 2,855,908

Additional Information of Sta_4

Additional Information of Statement of Cash Flows - Changes in Liabilities Arising from Financial Activities (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Interest expenses	₩ 607,458	₩ 439,826	₩ 638,797
Short-term borrowings [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning	5,110,424	5,194,395
Changes from financing cash flows	1,764,569	(329,897)
The effect of changes in foreign exchange rates	(41,873)	245,926
Changes in fair values	0
Ending	6,833,120	5,110,424	5,194,395
Long-term borrowings [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning	16,630,792	15,303,212
Changes from financing cash flows	415,692	639,414
Changes arising from obtaining or losing control of subsidiaries or other business	142,290	41,359
The effect of changes in foreign exchange rates	355,540	689,078
Changes in fair values	(85,790)	(54,057)
Interest expense		11,786
Interest expenses	14,018
Ending	17,472,542	16,630,792	15,303,212
Dividend payable [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning	4,046	2,703
Changes from financing cash flows	(1,234,899)	(1,327,414)
Decrease in retained earnings	1,138,107	1,259,272
Decrease in non-controlling interest	97,117	69,485
Ending	4,371	4,046	2,703
Lease liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning	778,014	739,675
Changes from financing cash flows	(268,082)	(281,288)
Changes arising from obtaining or losing control of subsidiaries or other business	193,572
The effect of changes in foreign exchange rates	(96,771)	57,814
Interest expense		22
Interest expenses	34,935
Increase in lease assets	181,814	261,791
Ending	823,482	778,014	739,675
Derivatives that hedge long-term borrowings [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning	107,982	178,988
Changes from financing cash flows	102,973	(11,338)
Changes in fair values	(19,458)	(59,668)
Ending	₩ 191,497	₩ 107,982	₩ 178,988

Operating Segments - Informatio

Operating Segments - Information about Reportable Segments (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Revenues	₩ 85,003,616	₩ 76,009,201	₩ 57,466,678
Interest income	247,005	292,243	372,174
Interest expenses	(607,458)	(439,826)	(638,797)
Depreciation and amortization	(3,687,621)	(3,579,446)	(3,621,740)
Impairment loss on property, plant and equipment and others	(583,845)	(535,848)	(229,846)
Share of loss of equity-accounted investees, net	676,260	649,569	133,297
Income tax expense	(461,534)	(2,213,827)	(224,272)
Segment profit	3,585,957	7,175,982	1,748,492
Assets	99,021,750	92,298,890
Liabilities	40,829,853	37,584,924
External customers [member]
Disclosure of operating segments [line items]
Revenues	253,412	(323,144)	(326,118)
Reportable segments [member]
Disclosure of operating segments [line items]
Revenues	141,108,702	123,039,762	89,748,804
Interest income	280,741	318,241	404,942
Interest expenses	(715,683)	(514,474)	(725,487)
Depreciation and amortization	(3,758,804)	(3,685,343)	(3,661,357)
Impairment loss on property, plant and equipment and others	(259,316)	(352,586)	(78,257)
Share of loss of equity-accounted investees, net	(310,388)	(389,336)	(609,003)
Income tax expense	(2,740,420)	(2,330,427)	(300,378)
Segment profit	1,690,991	7,437,950	1,312,569
Assets	155,401,722	117,387,205	101,272,738
Investment in subsidiaries, associates and joint ventures	51,555,814	20,368,327	18,895,337
Acquisition of non-currentassets	5,630,768	3,611,804	3,486,765
Liabilities	50,114,430	46,593,859	38,937,462
Reportable segments [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		123,039,762	89,748,804
Interest income		318,241	404,942
Interest expenses		(514,474)	(725,487)
Depreciation and amortization		(3,685,343)	(3,661,357)
Impairment loss on property, plant and equipment and others		(352,586)	(78,257)
Share of loss of equity-accounted investees, net		(389,336)	(609,003)
Income tax expense		(2,330,427)	(300,378)
Segment profit		7,437,950	1,312,569
Assets		117,387,205	101,272,738
Investment in subsidiaries, associates and joint ventures		20,368,327	18,895,337
Acquisition of non-currentassets		3,611,804	3,486,765
Liabilities		46,593,859	38,937,462
Reportable segments [member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	84,750,204	76,332,345	57,792,796
Reportable segments [member] | External customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		76,332,345	57,792,796
Reportable segments [member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	56,358,498	46,707,417	31,956,008
Reportable segments [member] | Internal customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		46,707,417	31,956,008
Reportable segments [member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	37,338,426	29,491,494	20,487,275
Reportable segments [member] | Intersegment [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		29,335,557	20,367,782
Reportable segments [member] | Steel [member]
Disclosure of operating segments [line items]
Revenues	70,649,647	63,548,916	44,258,320
Interest income	141,047	179,841	233,833
Interest expenses	(446,058)	(313,769)	(467,767)
Depreciation and amortization	(3,036,041)	(3,000,179)	(3,040,316)
Impairment loss on property, plant and equipment and others	(234,904)	(249,645)	(37,623)
Share of loss of equity-accounted investees, net	(6,239)	(261,363)	(409,889)
Income tax expense	(565,353)	(2,045,079)	(77,682)
Segment profit	1,711,940	6,587,903	711,882
Assets	66,143,103	80,953,507	71,105,618
Investment in subsidiaries, associates and joint ventures	2,659,443	16,567,555	15,425,607
Acquisition of non-currentassets	3,287,878	2,194,346	2,819,217
Liabilities	25,111,665	25,714,577	20,976,864
Reportable segments [member] | Steel [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		63,548,916	44,258,320
Interest income		179,841	233,833
Interest expenses		(313,769)	(467,767)
Depreciation and amortization		(3,000,179)	(3,040,316)
Impairment loss on property, plant and equipment and others		(249,645)	(37,623)
Share of loss of equity-accounted investees, net		(261,363)	(409,889)
Income tax expense		(2,045,079)	(77,682)
Segment profit		6,587,903	711,883
Assets		80,953,507	71,105,618
Investment in subsidiaries, associates and joint ventures		16,567,555	15,425,607
Acquisition of non-currentassets		2,194,346	2,819,217
Liabilities		25,714,577	20,976,864
Reportable segments [member] | Steel [member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	44,546,966	41,093,405	28,892,877
Reportable segments [member] | Steel [member] | External customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		41,093,405	28,892,877
Reportable segments [member] | Steel [member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	26,102,681	22,455,511	15,365,443
Reportable segments [member] | Steel [member] | Internal customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		22,455,511	15,365,443
Reportable segments [member] | Steel [member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	18,226,727	14,940,813	10,545,577
Reportable segments [member] | Steel [member] | Intersegment [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		14,940,813	10,545,577
Reportable segments [member] | Green Infrastructure Construction [Member]
Disclosure of operating segments [line items]
Revenues	8,885,491	7,412,514	7,609,991
Interest income	68,774	72,830	103,974
Interest expenses	(44,309)	(39,134)	(60,768)
Depreciation and amortization	(64,813)	(69,777)	(313,134)
Impairment loss on property, plant and equipment and others	(32)	(10)	(32,184)
Share of loss of equity-accounted investees, net	(2,792)	(45,778)	(65,409)
Income tax expense	(92,715)	(116,799)	(57,178)
Segment profit	137,911	164,276	150,021
Assets	8,878,530	8,136,549	7,658,130
Investment in subsidiaries, associates and joint ventures	565,873	538,484	603,752
Acquisition of non-currentassets	53,708	10,233	180,005
Liabilities	4,937,907	4,451,055	4,260,003
Reportable segments [member] | Green Infrastructure Construction [Member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	7,667,696	6,398,366	6,576,170
Reportable segments [member] | Green Infrastructure Construction [Member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	1,217,795	1,014,148	1,033,821
Reportable segments [member] | Green Infrastructure Construction [Member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	1,074,088	940,408	965,409
Reportable segments [member] | Green Infrastructure Trading [Member]
Disclosure of operating segments [line items]
Revenues	49,589,760	45,290,449	32,292,025
Interest income	37,603	30,265	44,528
Interest expenses	(156,663)	(100,419)	(127,800)
Depreciation and amortization	(392,969)	(343,489)	(71,144)
Impairment loss on property, plant and equipment and others	(23,035)	(66,157)	(8,226)
Share of loss of equity-accounted investees, net	(29,541)	(70,321)	(116,074)
Income tax expense	(189,535)	(101,622)	(92,589)
Segment profit	525,500	324,888	157,152
Assets	15,693,605	16,373,409	13,152,462
Investment in subsidiaries, associates and joint ventures	1,821,243	2,066,688	1,958,333
Acquisition of non-currentassets	622,678	478,278	36,385
Liabilities	10,097,503	11,049,017	8,804,555
Reportable segments [member] | Green Infrastructure Trading [Member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	25,955,458	25,065,608	19,345,222
Reportable segments [member] | Green Infrastructure Trading [Member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	23,634,302	20,224,841	12,946,803
Reportable segments [member] | Green Infrastructure Trading [Member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	11,853,034	10,653,742	6,413,835
Reportable segments [member] | Green Infrastructure Energy and Others [Member]
Disclosure of operating segments [line items]
Revenues	7,425,508	2,916,259	2,568,610
Interest income	23,928	12,905	15,944
Interest expenses	(56,799)	(47,827)	(57,747)
Depreciation and amortization	(149,754)	(142,426)	(129,478)
Impairment loss on property, plant and equipment and others	(292)	(25,270)	(141)
Share of loss of equity-accounted investees, net	(8,552)	(11,874)	(17,631)
Income tax expense	(93,210)	(37,970)	(48,003)
Segment profit	293,859	182,739	178,111
Assets	6,612,825	5,459,441	5,121,834
Investment in subsidiaries, associates and joint ventures	957,168	886,318	609,725
Acquisition of non-currentassets	125,942	152,445	62,243
Liabilities	3,683,068	3,124,777	3,035,137
Reportable segments [member] | Green Infrastructure Energy and Others [Member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	3,998,959	2,061,277	1,739,469
Reportable segments [member] | Green Infrastructure Energy and Others [Member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	3,426,549	854,982	829,141
Reportable segments [member] | Green Infrastructure Energy and Others [Member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	3,442,447	828,635	805,270
Reportable segments [member] | Green materials and energy [member]
Disclosure of operating segments [line items]
Revenues	3,388,760	2,089,162	1,613,688
Interest income	22,708	19,073	1,909
Interest expenses	(11,770)	(9,373)	(7,132)
Depreciation and amortization	(94,416)	(84,390)	(68,633)
Impairment loss on property, plant and equipment and others	(1,053)	(11,504)	(83)
Income tax expense	(14,120)	(10,698)	(8,123)
Segment profit	109,209	111,756	50,426
Assets	6,652,469	4,692,597	2,511,066
Investment in subsidiaries, associates and joint ventures	600,277	188,532	158,560
Acquisition of non-currentassets	1,169,725	661,376	263,646
Liabilities	2,127,424	1,519,026	1,084,585
Reportable segments [member] | Green materials and energy [member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	2,451,785	1,241,957	771,575
Reportable segments [member] | Green materials and energy [member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	936,975	847,205	842,113
Reportable segments [member] | Green materials and energy [member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	923,552	843,576	838,099
Reportable segments [member] | Trading [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		45,290,449	32,292,025
Interest income		30,265	44,528
Interest expenses		(100,419)	(127,800)
Depreciation and amortization		(343,489)	(313,134)
Impairment loss on property, plant and equipment and others		(66,157)	(8,226)
Share of loss of equity-accounted investees, net		(70,321)	(116,074)
Income tax expense		(101,622)	(92,589)
Segment profit		324,888	157,152
Assets		16,373,409	13,152,462
Investment in subsidiaries, associates and joint ventures		2,066,688	1,958,333
Acquisition of non-currentassets		478,278	180,005
Liabilities		11,049,017	8,804,555
Reportable segments [member] | Trading [member] | External customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		25,065,608	19,345,222
Reportable segments [member] | Trading [member] | Internal customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		20,224,841	12,946,803
Reportable segments [member] | Trading [member] | Intersegment [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		10,653,742	6,413,835
Reportable segments [member] | Construction [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		7,412,514	7,609,991
Interest income		72,830	103,974
Interest expenses		(39,134)	(60,768)
Depreciation and amortization		(69,777)	(71,144)
Impairment loss on property, plant and equipment and others		(10)	(32,184)
Share of loss of equity-accounted investees, net		(45,778)	(65,409)
Income tax expense		(116,799)	(57,178)
Segment profit		164,276	150,021
Assets		8,136,549	7,658,130
Investment in subsidiaries, associates and joint ventures		538,484	603,752
Acquisition of non-currentassets		10,233	36,385
Liabilities		4,451,055	4,260,003
Reportable segments [member] | Construction [member] | External customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		6,398,366	6,576,170
Reportable segments [member] | Construction [member] | Internal customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		1,014,148	1,033,821
Reportable segments [member] | Construction [member] | Intersegment [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		940,408	965,409
Reportable segments [member] | Other reportable segment [member]
Disclosure of operating segments [line items]
Revenues	1,169,536	1,782,462	1,406,170
Interest income	(13,319)	3,327	4,754
Interest expenses	(84)	(3,952)	(4,273)
Depreciation and amortization	(20,811)	(45,082)	(38,652)
Share of loss of equity-accounted investees, net	(263,264)
Income tax expense	(1,785,487)	(18,259)	(16,803)
Segment profit	(1,087,428)	66,388	64,976
Assets	51,421,190	1,771,702	1,723,628
Investment in subsidiaries, associates and joint ventures	44,951,810	120,750	139,360
Acquisition of non-currentassets	370,837	115,126	125,269
Liabilities	4,156,863	735,407	776,318
Reportable segments [member] | Other reportable segment [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		6,787,883	5,588,468
Interest income		35,305	22,607
Interest expenses		(61,152)	(69,152)
Depreciation and amortization		(271,898)	(236,763)
Impairment loss on property, plant and equipment and others		(36,774)	(224)
Share of loss of equity-accounted investees, net		(11,874)	(17,631)
Income tax expense		(66,927)	(72,929)
Segment profit		360,883	293,513
Assets		11,923,740	9,356,528
Investment in subsidiaries, associates and joint ventures		1,195,600	907,645
Acquisition of non-currentassets		928,947	451,158
Liabilities		5,379,210	4,896,040
Reportable segments [member] | Other reportable segment [member] | External customers [member]
Disclosure of operating segments [line items]
Revenues	129,340	471,732	467,483
Reportable segments [member] | Other reportable segment [member] | External customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		3,774,966	2,978,527
Reportable segments [member] | Other reportable segment [member] | Internal customers [member]
Disclosure of operating segments [line items]
Revenues	1,040,196	1,310,730	938,687
Reportable segments [member] | Other reportable segment [member] | Internal customers [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		3,012,917	2,609,941
Reportable segments [member] | Other reportable segment [member] | Intersegment [member]
Disclosure of operating segments [line items]
Revenues	₩ 1,818,578	1,284,320	919,085
Reportable segments [member] | Other reportable segment [member] | Intersegment [member] | Previously stated [member]
Disclosure of operating segments [line items]
Revenues		₩ 2,800,594	₩ 2,442,961

Operating Segments - Reconcilia

Operating Segments - Reconciliation of Segment Revenues, Profit or Loss, Assets and Liabilities and Other Significant Items (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Revenue	₩ 85,003,616	₩ 76,009,201	₩ 57,466,678
Profit before income tax expense	4,047,491	9,389,809	1,972,764
Assets	99,021,750	92,298,890
Liabilities	40,829,853	37,584,924
Interest income	247,005	292,243	372,174
Interest expenses	(607,458)	(439,826)	(638,797)
Depreciation and amortization	(3,687,621)	(3,579,446)	(3,621,740)
Share of profit of equity-accounted investees, net	676,260	649,569	133,297
Income tax expense	(461,534)	(2,213,827)	(224,272)
Impairment loss on property, plant and equipment and others	(583,845)	(535,848)	(229,846)
Other significant items	(4,417,193)	(5,827,135)	(4,209,184)
Goodwill and corporate FV adjustments [member]
Disclosure of operating segments [line items]
Profit before income tax expense	(68,771)	(62,500)	(74,685)
Assets	2,366,408	2,411,729
Liabilities	215,760	236,833
Interest expenses	0	605	806
Depreciation and amortization	(95,195)	(88,927)	(102,385)
Income tax expense	25,803	25,719	27,655
Impairment loss on property, plant and equipment and others			(761)
Other significant items	(69,392)	(62,603)	(74,685)
Income tax expense [member]
Disclosure of operating segments [line items]
Profit before income tax expense	453,883	2,220,183	236,934
Basis difference [member]
Disclosure of operating segments [line items]
Revenue	253,412	(323,144)	(326,118)
Profit before income tax expense	33,125	(26,264)	(52,322)
Assets	614,969	827,276
Liabilities	680,473	918,253
Income tax expense	(7,651)	6,356	12,662
Other significant items	(7,651)	6,356	12,662
Total Assets [Member]
Disclosure of operating segments [line items]
Assets	99,021,750	92,298,890
Total Liabilities [Member]
Disclosure of operating segments [line items]
Liabilities	40,829,853	37,584,924
Reportable segments [member]
Disclosure of operating segments [line items]
Revenue	141,108,702	123,039,762	89,748,804
Profit before income tax expense	1,690,991	7,437,950	1,312,569
Assets	155,401,722	117,387,205	101,272,738
Liabilities	50,114,430	46,593,859	38,937,462
Interest income	280,741	318,241	404,942
Interest expenses	(715,683)	(514,474)	(725,487)
Depreciation and amortization	(3,758,804)	(3,685,343)	(3,661,357)
Share of profit of equity-accounted investees, net	(310,388)	(389,336)	(609,003)
Income tax expense	(2,740,420)	(2,330,427)	(300,378)
Impairment loss on property, plant and equipment and others	(259,316)	(352,586)	(78,257)
Other significant items	(7,503,870)	(6,953,925)	(4,969,540)
Investments in subsidiaries, associates and joint ventures [member]
Disclosure of operating segments [line items]
Assets	(46,559,264)	(15,532,200)
Elimination of inter-segment amounts [member]
Disclosure of operating segments [line items]
Revenue	(56,358,498)	(46,707,417)	(31,956,008)
Profit before income tax expense	1,938,263	(179,560)	550,268
Assets	(12,802,085)	(12,795,120)
Liabilities	(10,180,810)	(10,164,021)
Interest income	(33,736)	(25,998)	(32,768)
Interest expenses	108,225	74,043	85,884
Depreciation and amortization	166,378	194,824	142,002
Share of profit of equity-accounted investees, net	986,648	1,038,905	742,300
Income tax expense	2,260,734	84,525	35,789
Impairment loss on property, plant and equipment and others	(324,529)	(183,262)	(150,828)
Other significant items	₩ 3,163,720	₩ 1,183,037	₩ 822,379

Operating Segments - Revenue an

Operating Segments - Revenue and Non-current Assets by Geographic Area (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of geographical areas [line items]
Revenue	₩ 85,003,616	₩ 76,009,201	₩ 57,466,678
Non-current assets	37,693,677	34,849,084
Domestic [member]
Disclosure of geographical areas [line items]
Non-current assets	28,623,582	27,806,262
Japan [member]
Disclosure of geographical areas [line items]
Non-current assets	139,636	155,556
China [member]
Disclosure of geographical areas [line items]
Non-current assets	1,199,461	1,175,593
Asia-other [member]
Disclosure of geographical areas [line items]
Non-current assets	4,768,410	4,198,982
North America [member]
Disclosure of geographical areas [line items]
Non-current assets	323,543	313,356
Other countries [member]
Disclosure of geographical areas [line items]
Non-current assets	2,639,045	1,199,335
External customers [member]
Disclosure of geographical areas [line items]
Revenue	253,412	(323,144)	(326,118)
Reportable segments [member]
Disclosure of geographical areas [line items]
Revenue	141,108,702	123,039,762	89,748,804
Reportable segments [member] | External customers [member]
Disclosure of geographical areas [line items]
Revenue	84,750,204	76,332,345	57,792,796
Reportable segments [member] | External customers [member] | Domestic [member]
Disclosure of geographical areas [line items]
Revenue	54,519,647	49,732,699	36,806,651
Reportable segments [member] | External customers [member] | Japan [member]
Disclosure of geographical areas [line items]
Revenue	2,651,584	2,200,855	1,788,839
Reportable segments [member] | External customers [member] | China [member]
Disclosure of geographical areas [line items]
Revenue	7,430,619	7,146,695	7,238,063
Reportable segments [member] | External customers [member] | Asia-other [member]
Disclosure of geographical areas [line items]
Revenue	12,614,612	11,425,513	7,897,041
Reportable segments [member] | External customers [member] | North America [member]
Disclosure of geographical areas [line items]
Revenue	2,413,054	2,083,309	1,308,943
Reportable segments [member] | External customers [member] | Other countries [member]
Disclosure of geographical areas [line items]
Revenue	₩ 5,120,688	₩ 3,743,274	₩ 2,753,259

Business combination - Summary

Business combination - Summary of Fair Value of the Identifiable Assets Acquired and Liabilities Assumed (Detail) ₩ in Millions	Apr. 01, 2022 KRW (₩)
Assets
Cash and cash equivalents	₩ 39,967
Trade accounts, notes receivable and other receivables, net	21,455
Inventories	12,693
Other current assets	3,054
Total current assets	77,169
Other long-term financial assets	1,257
Property, plant and equipment, net	244,058
Intangible assets, net	1,011,517
Total non-current assets	1,256,832
Total assets	1,334,001
Liabilities
Trade accounts and notes payable	78,027
Other short-term financial liabilities	14,471
Provisions	343
Other current liabilities	21,544
Total current liabilities	186,344
Other payables	181,913
Other long-term financial liabilities	1,553
Other non-current liabilities	70,982
Long-term provisions	24,115
Total non-current liabilities	346,597
Total liabilities	532,941
Net assets	₩ 801,060
Share acquisition ratio (%)	100%
Net assets acquired	₩ 801,060
Consideration paid	801,060
Short-term borrowings [member]
Liabilities
Borrowings	71,959
Long-term borrowings [member]
Liabilities
Borrowings	₩ 68,034

Business combination - Addition

Business combination - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Senex Holdings PTY LTD [Member]
Disclosure of detailed information about business combination [line items]
Percentage of voting equity interests acquired	100%
Senex Energy Limited [Member]
Disclosure of detailed information about business combination [line items]
Revenue of acquire since acquisition date	₩ 85,041,679
Profit (loss) of acquire since acquisition date	3,563,283
Senex Energy Limited [Member] | Other Administrative Expenses [Member]
Disclosure of detailed information about business combination [line items]
Amounts recognised for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination	3,247	₩ 1,812
Senex Energy Limited [Member] | Consolidated Financial [Member]
Disclosure of detailed information about business combination [line items]
Revenue of acquire since acquisition date	186,794
Profit (loss) of acquire since acquisition date	₩ 24,621

Events after the Reporting Pe_2

Events after the Reporting Period - Additional Information (Detail) ₩ / shares in Units, $ in Millions, ₩ in Billions		12 Months Ended
	Mar. 17, 2023 KRW (₩) ₩ / shares	Dec. 31, 2022	Jan. 12, 2023 KRW (₩)	Jan. 12, 2023 USD ($)
Disclosure of non-adjusting events after reporting period [line items]
Dividends proposed or declared per share | ₩ / shares	₩ 2,000
Dividends proposed or declared | ₩	₩ 151.7
Non Guaranteed Bonds Issued [Member] | 313 - 1st non guaranteed bonds
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | ₩			₩ 50
Borrowings, maturity		January 10, 2025
Non Guaranteed Bonds Issued [Member] | 313 - 2nd non guaranteed bonds
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | ₩			450
Borrowings, maturity		January 12, 2026
Non Guaranteed Bonds Issued [Member] | 313 - 3rd non guaranteed bonds
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | ₩			₩ 200
Borrowings, maturity		January 12, 2028
Non Guaranteed Senior Bonds [Member]
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | $				$ 2,000
Non Guaranteed Senior Bonds [Member] | January 17, 2026
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | $				700
Non Guaranteed Senior Bonds [Member] | January 17, 2028
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | $				1,000
Non Guaranteed Senior Bonds [Member] | January 17, 2033
Disclosure of non-adjusting events after reporting period [line items]
Notional amount | $				$ 300