Lloyds Bank (LLOY) 20-F 11 Mar 21 2020 FY Annual report (foreign) Financial data

Cover

Cover	12 Months Ended
	Dec. 31, 2020shares
Document information [Line Items]
Document type	20-F
Document registration statement	false
Document annual report	true
Document period end date	Dec. 31, 2020
Current fiscal year end date	--12-31
Document transition report	false
Document shell company report	false
Entity file number	001-35079
Entity registrant name	LLOYDS BANK plc
Entity incorporation, state or country code	X0
Entity address, address line one	25 Gresham Street
Entity address, city or town	London
Entity address, postal zip code	EC2V 7HN
Entity address, country	GB
Entity well-known seasoned issuer	No
Entity voluntary filers	No
Entity current reporting status	Yes
Entity interactive data current	Yes
Entity filer category	Non-accelerated Filer
Entity emerging growth company	false
ICFR auditor attestation flag	false
Document accounting standard	International Financial Reporting Standards
Entity shell company	false
Amendment flag	false
Entity central index key	0001167831
Document fiscal year focus	2020
Document fiscal period focus	FY
Ordinary shares, nominal value 1 pound each
Document information [Line Items]
Entity common stock, shares outstanding (in shares)	1,574,285,752
Preference shares, nominal value 1 pound each
Document information [Line Items]
Entity common stock, shares outstanding (in shares)	100
Preference shares, nominal value 25 pence each
Document information [Line Items]
Entity common stock, shares outstanding (in shares)	0
Preference shares, nominal value 25 cents each
Document information [Line Items]
Entity common stock, shares outstanding (in shares)	0
Preference shares, nominal value 25 euro cents each
Document information [Line Items]
Entity common stock, shares outstanding (in shares)	0
Preference shares, nominal value 25 yen each
Document information [Line Items]
Entity common stock, shares outstanding (in shares)	0
Business contact
Document information [Line Items]
Entity address, address line one	25 Gresham Street
Entity address, city or town	London
Entity address, postal zip code	EC2V 7HN
Entity address, country	GB
Contact personnel name	Kate Cheetham
City area code	44
Local phone number	(0) 20 7356 2104
Contact personnel fax number	44 (0) 20 7356 1808
$1,250,000,000 3.5% Senior Notes due 2025 | The New York Stock Exchange
Document information [Line Items]
Title of 12(b) security	$1,250,000,000 3.5% Senior Notes due 2025
Trading symbol	LYG25
Security exchange name	NYSE
$1,500,000,000 2.25% Senior Notes due 2022 | The New York Stock Exchange
Document information [Line Items]
Title of 12(b) security	$1,500,000,000 2.25% Senior Notes due 2022
Trading symbol	LYG22
Security exchange name	NYSE
$1,250,000,000 3.3% Senior Notes due 2021 | The New York Stock Exchange
Document information [Line Items]
Title of 12(b) security	$1,250,000,000 3.3% Senior Notes due 2021
Trading symbol	LYG21A
Security exchange name	NYSE
$1,000,000,000 Floating Rate Senior Notes due 2021 | The New York Stock Exchange
Document information [Line Items]
Title of 12(b) security	$1,000,000,000 Floating Rate Senior Notes due 2021
Trading symbol	LYG21B
Security exchange name	NYSE

CONSOLIDATED INCOME STATEMENT

CONSOLIDATED INCOME STATEMENT - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement [Line items]
Profit attributable to ordinary shareholders	£ 224	£ 2,165	£ 5,866
Profit attributable to other equity holders	417	281	275
The Group
Statement [Line items]
Interest income	13,866	16,098	16,216
Interest expense	(3,096)	(3,878)	(3,462)
Net interest income	10,770	12,220	12,754
Fee and commission income	1,924	2,363	2,497
Fee and commission expense	(909)	(1,027)	(1,228)
Net fee and commission income	1,015	1,336	1,269
Net trading income	750	360	408
Other operating income	2,050	2,692	2,543
Other income	3,815	4,388	4,220
Total income	14,585	16,608	16,974
Regulatory provisions	(414)	(2,190)	(1,956)
Other operating expenses	(8,782)	(8,933)	(9,812)
Total operating expenses	(9,196)	(11,123)	(11,768)
Impairment	(4,060)	(1,362)	(926)
Profit before tax – continuing operations	1,329	4,123	4,280
Tax credit (expense)	137	(1,287)	(1,377)
Profit after tax – continuing operations	1,466	2,836	2,903
Profit after tax – discontinued operations	0	0	1,314
Profit for the year	1,466	2,836	4,217
Profit attributable to ordinary shareholders	1,023	2,515	3,907
Profit attributable to other equity holders	417	281	275
Profit attributable to equity holders	1,440	2,796	4,182
Profit attributable to non-controlling interests	£ 26	£ 40	£ 35

STATEMENTS OF COMPREHENSIVE INC

STATEMENTS OF COMPREHENSIVE INCOME - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
The Group
Statement [Line items]
Profit for the year	£ 1,466		£ 2,836	£ 4,217
Post-retirement defined benefit scheme remeasurements:
Remeasurements before tax	138		(1,433)	167
Tax	(25)		316	(47)
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	113		(1,117)	120
Movements in revaluation reserve in respect of equity shares held at fair value through other comprehensive income:
Change in fair value	0		0	(98)
Tax	(16)		12	22
Other comprehensive income, net of tax, gains (losses) from investments in equity instruments	(16)		12	(76)
Gains and losses attributable to own credit risk:
(Losses) gains before tax	(75)		(419)	533
Tax	20		113	(144)
Gains (losses) attributable to own credit risk after tax	(55)		(306)	389
Share of other comprehensive income of associates and joint ventures	0		0	8
Movements in revaluation reserve in respect of debt securities held at fair value through other comprehensive income:
Change in fair value	46		(34)	(31)
Income statement transfers in respect of disposals	(145)		(196)	(268)
Income statement transfers in respect of impairment	5		(1)	0
Tax	74		72	115
Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income	(20)		(159)	(184)
Movements in cash flow hedging reserve:
Effective portion of changes in fair value taken to other comprehensive income	709		1,166	91
Net income statement transfers	(727)		(580)	(691)
Tax	(31)		(140)	137
Other comprehensive income, net of tax, cash flow hedges	(49)		446	(463)
Movements in foreign currency translation reserve:
Currency translation differences (tax: £nil)	0		(2)	(15)
Transfers to income statement (tax: £nil)	0		0	108
Increase (decrease) through foreign exchange and other movements, financial assets	0		(2)	93
Total other comprehensive income	(27)		(1,126)	(113)
Total comprehensive income for the year	1,439	[1]	1,710	4,104
Total comprehensive income attributable to ordinary shareholders arising from continuing operations	996		1,389	2,450
Total comprehensive income attributable to ordinary shareholders arising from discontinued operations	0		0	1,344	[2]
Total comprehensive income attributable to ordinary shareholders	996		1,389	3,794
Total comprehensive income attributable to other equity holders	417		281	275
Total comprehensive income attributable to equity holders	1,413		1,670	4,069
Total comprehensive income attributable to non-controlling interests	26		40	35
The Bank
Statement [Line items]
Profit for the year	641		2,446	6,141
Post-retirement defined benefit scheme remeasurements:
Remeasurements before tax	(133)		(776)	(206)
Tax	31		200	44
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	(102)		(576)	(162)
Movements in revaluation reserve in respect of equity shares held at fair value through other comprehensive income:
Change in fair value	0		0	(102)
Tax	4		12	0
Other comprehensive income, net of tax, gains (losses) from investments in equity instruments	4		12	(102)
Gains and losses attributable to own credit risk:
(Losses) gains before tax	(75)		(419)	533
Tax	20		113	(144)
Gains (losses) attributable to own credit risk after tax	(55)		(306)	389
Movements in revaluation reserve in respect of debt securities held at fair value through other comprehensive income:
Change in fair value	12		(50)	(58)
Income statement transfers in respect of disposals	(138)		(201)	(258)
Income statement transfers in respect of impairment	1		(1)	0
Tax	36		74	114
Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income	(89)		(178)	(202)
Movements in cash flow hedging reserve:
Effective portion of changes in fair value taken to other comprehensive income	85		892	255
Net income statement transfers	(355)		(448)	(628)
Tax	30		(105)	87
Other comprehensive income, net of tax, cash flow hedges	(240)		339	(286)
Movements in foreign currency translation reserve:
Currency translation differences (tax: £nil)	1		6	2
Transfers to income statement (tax: £nil)	0		0	(84)
Increase (decrease) through foreign exchange and other movements, financial assets	1		6	(82)
Total other comprehensive income	(481)		(703)	(445)
Total comprehensive income for the year	160		1,743	5,696
Total comprehensive income attributable to ordinary shareholders	(257)		1,462	5,421
Total comprehensive income attributable to other equity holders	417		281	275
Total comprehensive income attributable to equity holders	£ 160		£ 1,743	£ 5,696
[1]	Total comprehensive income attributable to owners of the parent was £1,413 million (2019: £1,670 million; 2018: £4,069 million).
[2]	2018 included post-retirement defined benefit scheme remeasurements in the Group’s discontinued operations of £37 million (£30 million after tax).

STATEMENTS OF COMPREHENSIVE I_2

STATEMENTS OF COMPREHENSIVE INCOME (Parentheticals) - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Statement [Line items]
Currency translation differences tax	£ 0	£ 0	£ 0
Transfers to income statement tax	0	0	0
Remeasurements of post-retirement benefit schemes, before tax, discontinued operations	138	(1,433)	167
Remeasurements of post-retirement benefit schemes, after tax, discontinued operations	113	(1,117)	120
The Group | Discontinued operations
Statement [Line items]
Remeasurements of post-retirement benefit schemes, before tax, discontinued operations			37
Remeasurements of post-retirement benefit schemes, after tax, discontinued operations			30
The Bank
Statement [Line items]
Currency translation differences tax	0	0	0
Transfers to income statement tax	0	0	0
Remeasurements of post-retirement benefit schemes, before tax, discontinued operations	(133)	(776)	(206)
Remeasurements of post-retirement benefit schemes, after tax, discontinued operations	£ (102)	£ (576)	£ (162)

BALANCE SHEETS

BALANCE SHEETS - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Liabilities
Subordinated liabilities		£ 12,586
Equity
Share capital	£ 1,574	1,574
Share premium account	600	600
Other equity instruments	5,935	4,865
The Group
Assets
Cash and balances at central banks	49,888	38,880
Items in the course of collection from banks	300	292
Financial assets at fair value through profit or loss	1,674	2,284
Derivative financial instruments	8,341	8,494
Loans and advances to banks	5,950	4,852
Loans and advances to customers	480,141	474,470
Debt securities	5,137	5,325
Due from fellow Lloyds Banking Group undertakings	738	1,854
Financial assets at amortised cost	491,966	486,501
Financial assets at fair value through other comprehensive income	27,260	24,617
Goodwill	470	474
Other intangible assets	4,112	3,781
Property, plant and equipment	8,317	9,467
Current tax recoverable	537	4
Deferred tax assets	3,468	3,366
Investment in subsidiary undertakings	0	0
Retirement benefit assets	1,714	681
Other assets	1,892	2,527
Total assets	599,939	581,368
Liabilities
Deposits from banks	24,997	23,593
Customer deposits	434,569	396,839
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Items in course of transmission to banks	302	354
Financial liabilities at fair value through profit or loss	6,831	7,702
Derivative financial instruments	8,228	9,831
Notes in circulation	1,305	1,079
Debt securities in issue	59,293	76,431
Other liabilities	5,181	5,600
Retirement benefit obligations	245	257
Current tax liabilities	31	166
Other provisions	1,722	3,138
Subordinated liabilities	9,242	12,586
Total liabilities	558,821	542,469
Equity
Share capital	1,574	1,574
Share premium account	600	600
Other reserves	7,181	7,250
Retained profits	25,750	24,549
Shareholders’ equity	35,105	33,973
Other equity instruments	5,935	4,865
Total equity excluding non-controlling interests	41,040	38,838
Non-controlling interests	78	61
Total equity	41,118	38,899
Total equity and liabilities	599,939	581,368
The Bank
Assets
Cash and balances at central banks	45,753	35,741
Items in the course of collection from banks	257	252
Financial assets at fair value through profit or loss	1,724	703
Derivative financial instruments	12,595	13,638
Loans and advances to banks	5,656	4,453
Loans and advances to customers	178,269	177,569
Debt securities	4,315	5,241
Due from fellow Lloyds Banking Group undertakings	128,771	202,277
Financial assets at amortised cost	317,011	389,540
Financial assets at fair value through other comprehensive income	24,647	22,160
Goodwill	0	0
Other intangible assets	2,960	2,618
Property, plant and equipment	3,098	3,594
Current tax recoverable	440	7
Deferred tax assets	2,109	2,029
Investment in subsidiary undertakings	33,353	34,084
Retirement benefit assets	765	386
Other assets	754	998
Total assets	445,466	505,750
Liabilities
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Items in course of transmission to banks	199	198
Financial liabilities at fair value through profit or loss	7,907	7,697
Derivative financial instruments	11,072	14,211
Notes in circulation	0	0
Debt securities in issue	48,109	61,509
Other liabilities	2,573	2,792
Retirement benefit obligations	106	124
Current tax liabilities	0	0
Other provisions	968	1,436
Subordinated liabilities	7,751	9,909
Total liabilities	393,298	454,531
Equity
Share capital	1,574	1,574
Share premium account	600	600
Other reserves	1,382	1,710
Retained profits	42,677	42,470
Shareholders’ equity	46,233	46,354
Other equity instruments	5,935	4,865
Total equity excluding non-controlling interests	52,168	51,219
Non-controlling interests	0	0
Total equity	52,168	51,219
Total equity and liabilities	£ 445,466	£ 505,750

STATEMENT OF CHANGES IN EQUITY

STATEMENT OF CHANGES IN EQUITY - GBP (£) £ in Millions	The Group		The GroupDebt securities	The GroupEquity shares	The Bank	The BankDebt securities	The BankEquity shares	Attributable to ordinary shareholdersThe Group		Attributable to ordinary shareholdersThe GroupDebt securities	Attributable to ordinary shareholdersThe GroupEquity shares	Attributable to ordinary shareholdersThe Bank	Attributable to ordinary shareholdersThe BankDebt securities	Attributable to ordinary shareholdersThe BankEquity shares	Share capital and premiumThe Group	Share capital and premiumThe Bank	Other reservesThe Group		Other reservesThe GroupDebt securities	Other reservesThe GroupEquity shares	Other reservesThe Bank	Other reservesThe BankDebt securities	Other reservesThe BankEquity shares	Retained profitsThe Group		Retained profitsThe Bank	Other equity instrumentsThe Group		Other equity instrumentsThe Bank	Non- controlling interestsThe Group
At 1 January at Dec. 31, 2017	£ 50,003				£ 60,305			£ 46,407				£ 57,088			£ 2,174	£ 2,174	£ 7,484				£ 2,071			£ 36,749		£ 52,843	£ 3,217		£ 3,217	£ 379
Comprehensive income
Profit for the year	4,217				6,141			3,907				5,866												3,907		5,866	275		275	35
Post-retirement defined benefit scheme remeasurements, net of tax	120				(162)			120				(162)												120		(162)
Share of other comprehensive income of associates and joint ventures	8							8																8
Movements in revaluation reserve in respect of financial assets held at fair value through other comprehensive income, net of tax:
Debt securities/ Equity shares			£ (184)	£ (76)		£ (202)	£ (102)			£ (184)	£ (76)		£ (202)	£ (102)					£ (184)	£ (76)		£ (202)	£ (102)
Gains and losses attributable to own credit risk, net of tax	389				389			389				389												389		389
Movements in cash flow hedging reserve, net of tax	(463)				(286)			(463)				(286)					(463)				(286)
Currency translation differences (tax: £nil)	93				(82)			93				(82)					93				(82)
Total other comprehensive income	(113)				(445)			(113)				(445)					(630)				(672)			517		227
Total comprehensive income for the year	4,104				5,696			3,794				5,421					(630)				(672)			4,424		6,093	275		275	35
Transactions with owners
Dividends	(11,058)				(11,022)			(11,022)				(11,022)												(11,022)		(11,022)				(36)
Distributions on other equity instruments	(275)				(275)																						(275)		(275)
Capital repayment to parent	(2,975)				(2,975)			(2,975)				(2,975)												(2,975)		(2,975)
Capital contributions received	265				265			265				265												265		265
Return of capital contributions	(9)				(9)			(9)				(9)												(9)		(9)
Changes in non-controlling interests	(305)																													(305)
Total transactions with owners	(14,357)				(14,016)			(13,741)				(13,741)			0	0								(13,741)		(13,741)	(275)		(275)	(341)
Realised gains and losses on equity shares held at fair value through other comprehensive income	0				0												(111)				(144)			111		144
At 31 December at Dec. 31, 2018	39,750				51,985			36,460				48,768			2,174	2,174	6,965				1,543			27,321		45,051	3,217		3,217	73
Comprehensive income
Profit for the year	2,836				2,446			2,515				2,165												2,515		2,165	281		281	40
Post-retirement defined benefit scheme remeasurements, net of tax	(1,117)				(576)			(1,117)				(576)												(1,117)		(576)
Share of other comprehensive income of associates and joint ventures	0
Movements in revaluation reserve in respect of financial assets held at fair value through other comprehensive income, net of tax:
Debt securities/ Equity shares			(159)	12		(178)	12			(159)	12		(178)	12					(159)	12		(178)	12
Gains and losses attributable to own credit risk, net of tax	(306)				(306)			(306)				(306)												(306)		(306)
Movements in cash flow hedging reserve, net of tax	446				339			446				339					446				339
Currency translation differences (tax: £nil)	(2)				6			(2)				6					(2)				6
Total other comprehensive income	(1,126)				(703)			(1,126)				(703)					297				179			(1,423)		(882)
Total comprehensive income for the year	1,710				1,743			1,389				1,462					297				179			1,092		1,283	281		281	40
Transactions with owners
Dividends	(4,138)				(4,100)			(4,100)				(4,100)												(4,100)		(4,100)				(38)
Distributions on other equity instruments	(281)				(281)							0				0					0					0	(281)		(281)
Capital repayment to parent																								0		0
Issue of other equity instruments (note 36)	1,648				1,648																						1,648		1,648
Capital contributions received	229				229			229				229												229		229
Return of capital contributions	(5)				(5)			(5)				(5)												(5)		(5)
Changes in non-controlling interests	(14)																													(14)
Total transactions with owners	(2,561)				(2,509)			(3,876)				(3,876)												(3,876)		(3,876)	1,367		1,367	(52)
Realised gains and losses on equity shares held at fair value through other comprehensive income	0				0												12				12			(12)		(12)
At 31 December at Dec. 31, 2019	38,899				51,219			33,973				46,354			2,174	2,174	7,250				1,710			24,549		42,470	4,865		4,865	61
Comprehensive income
Profit for the year	1,466				641			1,023				224												1,023		224	417		417	26
Post-retirement defined benefit scheme remeasurements, net of tax	113				(102)			113				(102)												113		(102)
Share of other comprehensive income of associates and joint ventures	0
Movements in revaluation reserve in respect of financial assets held at fair value through other comprehensive income, net of tax:
Debt securities/ Equity shares			£ (20)	£ (16)		£ (89)	£ 4			£ (20)	£ (16)		£ (89)	£ 4					£ (20)	£ (16)		£ (89)	£ 4
Gains and losses attributable to own credit risk, net of tax	(55)				(55)			(55)				(55)												(55)		(55)
Movements in cash flow hedging reserve, net of tax	(49)				(240)			(49)				(240)					(49)				(240)
Currency translation differences (tax: £nil)	0				1			0				1					0				1
Total other comprehensive income	(27)				(481)			(27)				(481)					(85)				(324)			58		(157)
Total comprehensive income for the year	1,439	[1]			160			996	[1]			(257)					(85)	[1]			(324)			1,081	[1]	67	417	[1]	417	26	[1]
Transactions with owners
Dividends	(7)																							0		0				(7)
Distributions on other equity instruments	(417)				(417)																						(417)		(417)
Capital repayment to parent																								0		0
Issue of other equity instruments (note 36)	1,070				1,070																						1,070		1,070
Capital contributions received	140				140			140				140												140		140
Return of capital contributions	(4)				(4)			(4)				(4)												(4)		(4)
Changes in non-controlling interests	(2)																													(2)
Total transactions with owners	780				789			136				136												136		136	653		653	(9)
Realised gains and losses on equity shares held at fair value through other comprehensive income	0				0												(16)				4			16		(4)
At 31 December at Dec. 31, 2020	£ 41,118				£ 52,168			£ 35,105				£ 46,233			£ 2,174	£ 2,174	£ 7,181				£ 1,382			£ 25,750		£ 42,677	£ 5,935		£ 5,935	£ 78
[1]	Total comprehensive income attributable to owners of the parent was £1,413 million (2019: £1,670 million; 2018: £4,069 million).

STATEMENT OF CHANGES IN EQUITY

STATEMENT OF CHANGES IN EQUITY (Parentheticals) - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Currency translation differences tax	£ 0	£ 0	£ 0
Comprehensive income, attributable to owners of parent	1,413	1,670	4,069
The Bank
Currency translation differences tax	0	0	0
Comprehensive income, attributable to owners of parent	£ 160	£ 1,743	£ 5,696

CASH FLOW STATEMENTS

CASH FLOW STATEMENTS - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Statement [Line items]
Profit before tax	£ 1,329	£ 4,123	£ 5,660	[1]
Adjustments for:
Change in operating assets	(6,856)	12,904	34,184
Change in operating liabilities	17,841	(5,630)	(61,433)
Non-cash and other items	3,484	1,469	(743)
Tax paid	(616)	(1,232)	(1,616)
Net cash provided by (used in) operating activities	15,182	11,634	(23,948)
Cash flows from investing activities
Purchase of financial assets	(8,539)	(9,108)	(12,309)
Proceeds from sale and maturity of financial assets	6,225	8,847	26,863
Purchase of fixed assets	(2,815)	(3,552)	(3,450)
Proceeds from sale of fixed assets	1,063	1,258	1,262
Additional capital injections to subsidiaries	0	0	0
Dividends received from subsidiaries	0	0	0
Distributions on other equity instruments received	0	0	0
Capital repayments and redemptions	0	0	0
Acquisition of businesses, net of cash acquired	0	0	(26)
Disposal of businesses, net of cash disposed	0	107	8,604
Net cash (used in) provided by investing activities	(4,066)	(2,448)	20,944
Cash flows from financing activities
Dividends paid to ordinary shareholders	0	(4,100)	(11,022)
Distributions on other equity instruments	(417)	(281)	(275)
Dividends paid to non-controlling interests	(7)	(38)	(36)
Return of capital contributions	(4)	(5)	(9)
Interest paid on subordinated liabilities	(852)	(906)	(1,022)
Proceeds from issue of subordinated liabilities	303	780	201
Proceeds from issue of other equity instruments	1,070	1,648	0
Return of capital to parent company	0	0	(2,975)
Repayment of subordinated liabilities	(4,156)	(762)	(2,256)
Borrowings from parent company	4,799	916	9,860
Repayments to parent company	(1,403)	(7,357)	(10,354)
Interest paid on borrowing from parent company	(98)	(187)	(370)
Net cash (used in) provided by financing activities	(765)	(10,292)	(18,258)
Effect of exchange rate changes on cash and cash equivalents	1	(3)	3
Change in cash and cash equivalents	10,352	(1,109)	(21,259)
Cash and cash equivalents at beginning of year	38,614	39,723	60,982
Cash and cash equivalents at end of year	48,966	38,614	39,723
The Bank
Statement [Line items]
Profit before tax	444	3,091	6,898
Adjustments for:
Change in operating assets	71,662	(31,543)	46,534
Change in operating liabilities	(61,993)	39,301	(76,719)
Non-cash and other items	1,820	(950)	(3,610)
Tax paid	(194)	(596)	(393)
Net cash provided by (used in) operating activities	11,739	9,303	(27,290)
Cash flows from investing activities
Purchase of financial assets	(7,793)	(7,748)	(11,699)
Proceeds from sale and maturity of financial assets	5,599	8,664	25,927
Purchase of fixed assets	(1,186)	(1,638)	(1,486)
Proceeds from sale of fixed assets	12	91	113
Additional capital injections to subsidiaries	(1,055)	(1,766)	(13)
Dividends received from subsidiaries	44	1,331	4,867
Distributions on other equity instruments received	167	103	101
Capital repayments and redemptions	1,801	212	210
Acquisition of businesses, net of cash acquired	0	0	(98)
Disposal of businesses, net of cash disposed	0	20	7,704
Net cash (used in) provided by investing activities	(2,411)	(731)	25,626
Cash flows from financing activities
Dividends paid to ordinary shareholders	0	(4,100)	(11,022)
Distributions on other equity instruments	(417)	(281)	(275)
Dividends paid to non-controlling interests	0	0	0
Return of capital contributions	(4)	(5)	(9)
Interest paid on subordinated liabilities	(759)	(674)	(659)
Proceeds from issue of subordinated liabilities	496	780	0
Proceeds from issue of other equity instruments	1,070	1,648	0
Return of capital to parent company	0	0	(2,975)
Repayment of subordinated liabilities	(2,726)	(184)	0
Borrowings from parent company	4,799	916	9,860
Repayments to parent company	(1,403)	(7,357)	(10,354)
Interest paid on borrowing from parent company	(98)	(187)	(370)
Net cash (used in) provided by financing activities	958	(9,444)	(15,804)
Effect of exchange rate changes on cash and cash equivalents	0	0	2
Change in cash and cash equivalents	10,286	(872)	(17,466)
Cash and cash equivalents at beginning of year	37,782	38,654	56,120
Cash and cash equivalents at end of year	£ 48,068	£ 37,782	£ 38,654
[1]	The Group profit before tax in 2018 comprised £4,280 million in respect of continuing operations and £1,380 million in respect of discontinued operations.

CASH FLOW STATEMENTS (Parenthet

CASH FLOW STATEMENTS (Parentheticals) - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Statement [Line items]
Profit before tax – continuing operations	£ 1,329	£ 4,123	£ 4,280

BASIS OF PREPARATION

BASIS OF PREPARATION	12 Months Ended
	Dec. 31, 2020
Disclosure of basis of preparation of financial statements [Abstract]
BASIS OF PREPARATION	1 BASIS OF PREPARATION These financial statements have been prepared in accordance with International Financial Reporting Standards (IFRS). IFRS comprises accounting standards prefixed IFRS issued by the International Accounting Standards Board (IASB) and those prefixed IAS issued by the IASB’s predecessor body as well as interpretations issued by the IFRS Interpretations Committee and its predecessor body. On adoption of IFRS 9 in 2018, the Bank (Lloyds Bank plc) and the Group (the Bank and its subsidiary undertakings) elected to continue applying hedge accounting under IAS 39. The financial information has been prepared under the historical cost convention, as modified by the revaluation of investment properties, financial assets measured at fair value through other comprehensive income, trading securities and certain other financial assets and liabilities at fair value through profit or loss and all derivative contracts. The directors consider that it is appropriate to continue to adopt the going concern basis in preparing the financial statements. In reaching this assessment, the directors have considered the implications of the COVID-19 pandemic upon the Group's performance and projected funding and capital position and have also taken into account the impact of further stress scenarios. On this basis, the directors are satisfied that the Group will maintain adequate levels of funding and capital for the foreseeable future. Details of those IFRS pronouncements which will be relevant to the Group but which were not effective at 31 December 2020 and which have not been applied in preparing these financial statements are given in note 47. In 2019 the Group adopted IFRS 16 and amendments to IAS 12 and early-adopted the hedge accounting amendments Interest Rate Benchmark Reform issued by the IASB.

ACCOUNTING POLICIES

ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2020
Disclosure of significant accounting policies [Abstract]
ACCOUNTING POLICIES	2 ACCOUNTING POLICIES The accounting policies are set out below. These accounting policies have been applied consistently. (A) Consolidation The assets, liabilities and results of Group undertakings (including structured entities) are included in the financial statements on the basis of accounts made up to the reporting date. Group undertakings include subsidiaries, associates and joint ventures. (1) Subsidiaries Subsidiaries are entities controlled by the Group. The Group controls an entity when it has power over the entity, is exposed to, or has rights to, variable returns from its involvement with the entity, and has the ability to affect those returns through the exercise of its power. This generally accompanies a shareholding of more than one half of the voting rights although in certain circumstances a holding of less than one half of the voting rights may still result in the ability of the Group to exercise control. The existence and effect of potential voting rights that are currently exercisable or convertible are considered when assessing whether the Group controls another entity. The Group reassesses whether or not it controls an entity if facts and circumstances indicate that there are changes to any of the above elements. Subsidiaries are fully consolidated from the date on which control is transferred to the Group; they are de-consolidated from the date that control ceases. Structured entities are entities that are designed so that their activities are not governed by way of voting rights. In assessing whether the Group has power over such entities in which it has an interest, the Group considers factors such as the purpose and design of the entity; its practical ability to direct the relevant activities of the entity; the nature of the relationship with the entity; and the size of its exposure to the variability of returns of the entity. The treatment of transactions with non-controlling interests depends on whether, as a result of the transaction, the Group loses control of the subsidiary. Changes in the parent’s ownership interest in a subsidiary that do not result in a loss of control are accounted for as equity transactions; any difference between the amount by which the non-controlling interests are adjusted and the fair value of the consideration paid or received is recognised directly in equity and attributed to the owners of the parent entity. Where the Group loses control of the subsidiary, at the date when control is lost the amount of any non-controlling interest in that former subsidiary is derecognised and any investment retained in the former subsidiary is remeasured to its fair value; the gain or loss that is recognised in profit or loss on the partial disposal of the subsidiary includes the gain or loss on the remeasurement of the retained interest. Intercompany transactions, balances and unrealised gains and losses on transactions between Group companies are eliminated. The acquisition method of accounting is used to account for business combinations by the Group. The consideration for the acquisition of a subsidiary is the fair value of the assets transferred, the liabilities incurred and the equity interests issued by the Group. The consideration includes the fair value of any asset or liability resulting from a contingent consideration arrangement. Acquisition related costs are expensed as incurred except those relating to the issuance of debt instruments (see (E)(4) below) or share capital (see (O) below). Identifiable assets acquired and liabilities assumed in a business combination are measured initially at their fair value at the acquisition date. (2) Joint ventures and associates Joint ventures are joint arrangements over which the Group has joint control with other parties and has rights to the net assets of the arrangements. Joint control is the contractually agreed sharing of control of an arrangement and only exists when decisions about the relevant activities require the unanimous consent of the parties sharing control. Associates are entities over which the Group has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the entity, but is not control or joint control of those policies, and is generally achieved through holding between 20 per cent and 50 per cent of the voting share capital of the entity. The Group utilises the venture capital exemption for investments where significant influence or joint control is present and the business unit operates as a venture capital business. These investments are designated at initial recognition at fair value through profit or loss. Otherwise, the Group’s investments in joint ventures and associates are accounted for by the equity method of accounting. (B) Goodwill Goodwill arises on business combinations and represents the excess of the cost of an acquisition over the fair value of the Group’s share of the identifiable assets, liabilities and contingent liabilities acquired. Where the fair value of the Group’s share of the identifiable assets, liabilities and contingent liabilities of the acquired entity is greater than the cost of acquisition, the excess is recognised immediately in the income statement. Goodwill is recognised as an asset at cost and is tested at least annually for impairment. If an impairment is identified the carrying value of the goodwill is written down immediately through the income statement and is not subsequently reversed. At the date of disposal of a subsidiary, the carrying value of attributable goodwill is included in the calculation of the profit or loss on disposal. (C) Other intangible assets Intangible assets which have been determined to have a finite useful life are amortised on a straight line basis over their estimated useful life as follows: up to 7 years for capitalised software; 10 to 15 years for brands and other intangible assets. Intangible assets with finite useful lives are reviewed at each reporting date to assess whether there is any indication that they are impaired. If any such indication exists the recoverable amount of the asset is determined and in the event that the asset’s carrying amount is greater than its recoverable amount, it is written down immediately. Certain brands have been determined to have an indefinite useful life and are not amortised. Such intangible assets are reassessed annually to reconfirm that an indefinite useful life remains appropriate. In the event that an indefinite life is inappropriate a finite life is determined and an impairment review is performed on the asset. (D) Revenue recognition (1) Net interest income Interest income and expense are recognised in the income statement using the effective interest method for all interest-bearing financial instruments, except for those classified at fair value through profit or loss. The effective interest method is a method of calculating the amortised cost of a financial asset or liability and of allocating the interest income or interest expense over the expected life of the financial instrument. The effective interest rate is the rate that exactly discounts the estimated future cash payments or receipts over the expected life of the financial instrument to the gross carrying amount of the financial asset (before adjusting for expected credit losses) or to the amortised cost of the financial liability, including early redemption fees, and related penalties, and premiums and discounts that are an integral part of the overall return. In the case of financial assets that are purchased or originated credit-impaired, the effective interest rate is the rate that discounts the estimated future cash flows to the amortised cost of the instrument. Direct incremental transaction costs related to the acquisition, issue or disposal of a financial instrument are also taken into account. Interest income from non-credit impaired financial assets is recognised by applying the effective interest rate to the gross carrying amount of the asset; for credit impaired financial assets, the effective interest rate is applied to the net carrying amount after deducting the allowance for expected credit losses. Impairment policies are set out in (H) below. (2) Fee and commission income and expense Fees and commissions receivable which are not an integral part of the effective interest rate are recognised as income as the Group fulfils its performance obligations. The Group’s principal performance obligations arising from contracts with customers are in respect of value added current accounts, credit cards and debit cards. These fees are received, and the Group’s provides the service, monthly; the fees are recognised in income on this basis. The Group also receives certain fees in respect of its asset finance business where the performance obligations are typically fulfilled towards the end of the customer contract; these fees are recognised in income on this basis. Where it is unlikely that the loan commitments will be drawn, loan commitment fees are recognised in fee and commission income over the life of the facility, rather than as an adjustment to the effective interest rate for loans expected to be drawn. Incremental costs incurred to generate fee and commission income are charged to fees and commissions expense as they are incurred. (3) Other Dividend income is recognised when the right to receive payment is established. Revenue recognition policies specific to trading income are set out in (E)(3) below; those relating to leases are set out in (J)(1) below. (E) Financial assets and liabilities On initial recognition, financial assets are classified as measured at amortised cost, fair value through other comprehensive income or fair value through profit or loss, depending on the Group’s business model for managing the financial assets and whether the cash flows represent solely payments of principal and interest. The Group assesses its business models at a portfolio level based on its objectives for the relevant portfolio, how the performance of the portfolio is managed and reported, and the frequency of asset sales. Financial assets with embedded derivatives are considered in their entirety when considering their cash flow characteristics. The Group reclassifies financial assets when and only when its business model for managing those assets changes. A reclassification will only take place when the change is significant to the Group’s operations and will occur at a portfolio level and not for individual instruments; reclassifications are expected to be rare. Equity investments are measured at fair value through profit or loss unless the Group elects at initial recognition to account for the instruments at fair value through other comprehensive income. For these instruments, principally strategic investments, dividends are recognised in profit or loss but fair value gains and losses are not subsequently reclassified to profit or loss following derecognition of the investment. The Group initially recognises loans and advances, deposits, debt securities in issue and subordinated liabilities when the Group becomes a party to the contractual provisions of the instrument. Regular way purchases and sales of securities and other financial assets and trading liabilities are recognised on trade date, being the date that the Group is committed to purchase or sell an asset. Financial assets are derecognised when the contractual right to receive cash flows from those assets has expired or when the Group has transferred its contractual right to receive the cash flows from the assets and either: substantially all of the risks and rewards of ownership have been transferred; or the Group has neither retained nor transferred substantially all of the risks and rewards, but has transferred control. Financial liabilities are derecognised when the obligation is discharged, cancelled or expires. (1) Financial instruments measured at amortised cost Financial assets that are held to collect contractual cash flows where those cash flows represent solely payments of principal and interest are measured at amortised cost. A basic lending arrangement results in contractual cash flows that are solely payments of principal and interest on the principal amount outstanding. Where the contractual cash flows introduce exposure to risks or volatility unrelated to a basic lending arrangement such as changes in equity prices or commodity prices, the payments do not comprise solely principal and interest. Financial assets measured at amortised cost are predominantly loans and advances to customers and banks together with certain debt securities used by the Group to manage its liquidity. Loans and advances are initially recognised when cash is advanced to the borrower at fair value inclusive of transaction costs. Interest income is accounted for using the effective interest method (see (D) above). Financial liabilities are measured at amortised cost, except for trading liabilities and other financial liabilities designated at fair value through profit or loss on initial recognition which are held at fair value. (2) Financial assets measured at fair value through other comprehensive income Financial assets that are held to collect contractual cash flows and for subsequent sale, where the assets’ cash flows represent solely payments of principal and interest, are recognised in the balance sheet at their fair value, inclusive of transaction costs. Interest calculated using the effective interest method and foreign exchange gains and losses on assets denominated in foreign currencies are recognised in the income statement. All other gains and losses arising from changes in fair value are recognised directly in other comprehensive income, until the financial asset is either sold or matures, at which time the cumulative gain or loss previously recognised in other comprehensive income is recognised in the income statement other than in respect of equity shares, for which the cumulative revaluation amount is transferred directly to retained profits. The Group recognises a charge for expected credit losses in the income statement (see (H) below). As the asset is measured at fair value, the charge does not adjust the carrying value of the asset, it is reflected in other comprehensive income. (3) Financial instruments measured at fair value through profit or loss Financial assets are classified at fair value through profit or loss where they do not meet the criteria to be measured at amortised cost or fair value through other comprehensive income or where they are designated at fair value through profit or loss to reduce an accounting mismatch. All derivatives are carried at fair value through profit or loss. Trading securities, which are debt securities and equity shares acquired principally for the purpose of selling in the short-term or which are part of a portfolio which is managed for short-term gains, do not meet these criteria and are also measured at fair value through profit or loss. Financial assets measured at fair value through profit or loss are recognised in the balance sheet at their fair value. Fair value gains and losses together with interest coupons and dividend income are recognised in the income statement within net trading income. Financial liabilities are measured at fair value through profit or loss where they are trading liabilities or where they are designated at fair value through profit or loss in order to reduce an accounting mismatch; where the liabilities are part of a group of liabilities (or assets and liabilities) which is managed, and its performance evaluated, on a fair value basis; or where the liabilities contain one or more embedded derivatives that significantly modify the cash flows arising under the contract and would otherwise need to be separately accounted for. Financial liabilities measured at fair value through profit or loss are recognised in the balance sheet at their fair value. Fair value gains and losses are recognised in the income statement within net trading income in the period in which they occur, except that gains and losses attributable to changes in own credit risk are recognised in other comprehensive income. The fair values of assets and liabilities traded in active markets are based on current bid and offer prices respectively. If the market is not active the Group establishes a fair value by using valuation techniques. The fair values of derivative financial instruments are adjusted where appropriate to reflect credit risk (via credit valuation adjustments (CVAs), debit valuation adjustments (DVAs) and funding valuation adjustments (FVAs)), market liquidity and other risks. (4) Borrowings Borrowings (which include deposits from banks, customer deposits, debt securities in issue and subordinated liabilities) are recognised initially at fair value, being their issue proceeds net of transaction costs incurred. These instruments are subsequently stated at amortised cost using the effective interest method. Preference shares and other instruments which carry a mandatory coupon or are redeemable on a specific date are classified as financial liabilities. The coupon on these instruments is recognised in the income statement as interest expense. Securities which carry a discretionary coupon and have no fixed maturity or redemption date are classified as other equity instruments. Interest payments on these securities are recognised, as distributions from equity in the period in which they are paid. An exchange of financial liabilities on substantially different terms is accounted for as an extinguishment of the original financial liability and the recognition of a new financial liability. The difference between the carrying amount of a financial liability extinguished and the new financial liability is recognised in profit or loss together with any related costs or fees incurred. When a financial liability is exchanged for an equity instrument, the new equity instrument is recognised at fair value and any difference between the carrying value of the liability and the fair value of the new equity is recognised in profit or loss. (5) Sale and repurchase agreements (including securities lending and borrowing) Securities sold subject to repurchase agreements (repos) continue to be recognised on the balance sheet where substantially all of the risks and rewards are retained. Funds received under these arrangements are included in deposits from banks, customer deposits, or trading liabilities. Conversely, securities purchased under agreements to resell (reverse repos), where the Group does not acquire substantially all of the risks and rewards of ownership, are recorded as loans and advances measured at amortised cost or trading securities. The difference between sale and repurchase price is treated as interest and accrued over the life of the agreements using the effective interest method. Securities borrowing and lending transactions are typically secured; collateral takes the form of securities or cash advanced or received. Securities lent to counterparties are retained on the balance sheet. Securities borrowed are not recognised on the balance sheet, unless these are sold to third parties, in which case the obligation to return them is recorded at fair value as a trading liability. Cash collateral given or received is treated as a loan and advance measured at amortised cost or customer deposit. (F) Derivative financial instruments and hedge accounting As permitted by IFRS 9, the Group continues to apply the requirements of IAS 39 to its hedging relationships. All derivatives are recognised at their fair value. Derivatives are carried on the balance sheet as assets when their fair value is positive and as liabilities when their fair value is negative. Refer to note 42(3) (Financial instruments: Financial assets and liabilities carried at fair value) for details of valuation techniques and significant inputs to valuation models. Changes in the fair value of all derivative instruments, other than those in effective cash flow and net investment hedging relationships, are recognised immediately in the income statement. As noted in (2) and (3) below, the change in fair value of a derivative in an effective cash flow or net investment hedging relationship is allocated between the income statement and other comprehensive income. Derivatives embedded in a financial asset are not considered separately; the financial asset is considered in its entirety when determining whether its cash flows are solely payments of principal and interest. Derivatives embedded in financial liabilities treated as separate derivatives when their economic characteristics and risks are not closely related to those of the host contract and the host contract is not carried at fair value through profit or loss. These embedded derivatives are measured at fair value with changes in fair value recognised in the income statement. Hedge accounting allows one financial instrument, generally a derivative such as a swap, to be designated as a hedge of another financial instrument such as a loan or deposit or a portfolio of such instruments. At the inception of the hedge relationship, formal documentation is drawn up specifying the hedging strategy, the hedged item, the hedging instrument and the methodology that will be used to measure the effectiveness of the hedge relationship in offsetting changes in the fair value or cash flow of the hedged risk. The effectiveness of the hedging relationship is tested both at inception and throughout its life and if at any point it is concluded that it is no longer highly effective in achieving its documented objective, hedge accounting is discontinued. Note 15 provides details of the types of derivatives held by the Group and presents separately those designated in hedge relationships. Where there is uncertainty arising from interest rate benchmark reform, the Group assumes that the interest rate benchmark on which the hedged cash flows and/or the hedged risk are based, or the interest rate benchmark on which the cash flows of the hedging instrument are based, are not altered as a result of interest rate benchmark reform. The Group does not discontinue a hedging relationship during the period of uncertainty arising from the interest rate benchmark reform solely because the actual results of the hedge are not highly effective. (1) Fair value hedges Changes in the fair value of derivatives that are designated and qualify as fair value hedges are recorded in the income statement, together with the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk; this also applies if the hedged asset is classified as a financial asset at fair value through other comprehensive income. If the hedge no longer meets the criteria for hedge accounting, changes in the fair value of the hedged item attributable to the hedged risk are no longer recognised in the income statement. The cumulative adjustment that has been made to the carrying amount of the hedged item is amortised to the income statement using the effective interest method over the period to maturity. (2) Cash flow hedges The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges is recognised in other comprehensive income in the cash flow hedging reserve. The gain or loss relating to the ineffective portion is recognised immediately in the income statement. Amounts accumulated in equity are reclassified to the income statement in the periods in which the hedged item affects profit or loss. When a hedging instrument expires or is sold, or when a hedge no longer meets the criteria for hedge accounting, any cumulative gain or loss existing in equity at that time remains in equity and is recognised in the income statement when the forecast transaction is ultimately recognised in the income statement. When a forecast transaction is no longer expected to occur, the cumulative gain or loss that was reported in equity is immediately transferred to the income statement. (3) Net investment hedges Hedges of net investments in foreign operations are accounted for similarly to cash flow hedges. Any gain or loss on the hedging instrument relating to the effective portion of the hedge is recognised in other comprehensive income, the gain or loss relating to the ineffective portion is recognised immediately in the income statement. Gains and losses accumulated in equity are included in the income statement when the foreign operation is disposed of. The hedging instrument used in net investment hedges may include non-derivative liabilities as well as derivative financial instruments. (G) Offset Financial assets and liabilities are offset and the net amount reported in the balance sheet when there is a legally enforceable right of offset and there is an intention to settle on a net basis, or realise the asset and settle the liability simultaneously. Cash collateral on exchange traded derivative transactions is presented gross unless the collateral cash flows are always settled net with the derivative cash flows. In certain situations, even though master netting agreements exist, the lack of management intention to settle on a net basis results in the financial assets and liabilities being reported gross on the balance sheet. (H) Impairment of financial assets The impairment charge in the income statement includes the change in expected credit losses and including those arising from fraud. Expected credit losses are recognised for loans and advances to customers and banks, other financial assets held at amortised cost, financial assets measured at fair value through other comprehensive income, and certain loan commitments and financial guarantee contracts. Expected credit losses are calculated as an unbiased and probability-weighted estimate using an appropriate probability of default, adjusted to take into account a range of possible future economic scenarios, and applying this to the estimated exposure of the Group at the point of default after taking into account the value of any collateral held, repayments, or other mitigants of loss and including the impact of discounting using the effective interest rate. At initial recognition, allowance (or provision in the case of some loan commitments and financial guarantees) is made for expected credit losses resulting from default events that are possible within the next 12 months (12-month expected credit losses). In the event of a significant increase in credit risk since origination, allowance (or provision) is made for expected credit losses resulting from all possible default events over the expected life of the financial instrument (lifetime expected credit losses). Financial assets where 12-month expected credit losses are recognised are considered to be Stage 1; financial assets which are considered to have experienced a significant increase in credit risk since initial recognition are in Stage 2; and financial assets which have defaulted or are otherwise considered to be credit impaired are allocated to Stage 3. Some Stage 3 assets, mainly in Commercial Banking, are subject to individual rather than collective assessment. Such cases are subject to a risk-based impairment sanctioning process, and these are reviewed and updated at least quarterly, or more frequently if there is a significant change in the credit profile. The collective assessment of impairment aggregates financial instruments with similar risk characteristics such as whether the facility is revolving in nature or secured and the type of security against financial assets. An assessment of whether credit risk has increased significantly since initial recognition considers the change in the risk of default occurring over the remaining expected life of the financial instrument. In determining whether there has been a significant increase in credit risk, the Group uses quantitative tests based on relative and absolute probability of default (PD) movements linked to internal credit ratings together with qualitative indicators such as watchlists and other indicators of historical delinquency, credit weakness or financial difficulty. The use of internal credit ratings and qualitative indicators ensure alignment between the assessment of staging and the Group’s management of credit risk which utilises these internal metrics within distinct retail and commercial portfolio risk management practices. However, unless identified at an earlier stage, the credit risk of financial assets is deemed to have increased significantly when more than 30 days past due. The use of a payment holiday in itself has not been judged to indicate a significant increase in credit risk, with the underlying long-term credit risk deemed to be driven by economic conditions and captured through the use of forward-looking models. These portfolio level models are capturing the anticipated volume of increased defaults and therefore an appropriate assessment of staging and expected credit loss. Where the credit risk subsequently improves such that it no longer represents a significant increase in credit risk since initial recognition, the asset is transferred back to Stage 1. Assets are transferred to Stage 3 when they have defaulted or are otherwise considered to be credit impaired. Default is considered to have occurred when there is evidence that the customer is experiencing financial difficulty which is likely to affect significantly the ability to repay the amount due. IFRS 9 contains a rebuttable presumption that default occurs no later than when a payment is 90 days past due. The Group uses this 90 day backstop for all its products except for UK mortgages. For UK mortgages, the Group uses a backstop of 180 days past due as mortgage exposures more than 90 days past due, but less than 180 days, typically show high cure rates and this aligns with the Group’s risk management practices. Key differences between Stage 3 balances and non-performing loans relate to the use of 180 days past due for Stage 3 mortgages and to the cure periods applied to forbearance exposures. The use of payment holidays is not considered to be an automatic trigger of regulatory default and therefore does not automatically trigger Stage 3. Days past due will also not accumulate on any accounts that have taken a payment holiday including those already past due. In certain circumstances, the Group will renegotiate the original terms of a customer’s loan, either as part of an ongoing customer relationship or in response to adverse changes in the circumstances of the borrower. In the latter circumstances, the loan will remain classified as either Stage 2 or Stage 3 until the credit risk has improved such that it no longer represents a significant increase since origination (for a return to Stage 1), or the loan is no longer credit impaired (for a return to Stage 2). On renegotiation the gross carrying amount of the loan is recalculated as the present value of the renegotiated or modified contractual cash flows, which are discounted at the original effective interest rate. Renegotiation may also lead to the loan and associated allowance being derecognised and a new loan being recognised initially at fair value. Purchased or originated credit-impaired financial assets (POCI) include financial assets that are purchased or originated at a deep discount that reflects incurred credit losses. At initial recognition, POCI assets do not carry an impairment allowance; instead, lifetime expected credit losses are incorporated into the calculation of the effective interest rate. All changes in lifetime expected credit losses subsequent to the assets’ initial recognition are recognised as an impairment charge. A loan or advance is normally written off, either partially or in full, against the related allowance when the proceeds from realising any available security have been received or there is no realistic prospect of recovery and the amount of the loss has been determined. Subsequent recoveries of amounts previously written off decrease the amount of impairment losses recorded in the income statement. For both secured and unsecured retail balances, the write-off takes place only once an extensive set of collections processes has been completed, or the status of the account reaches a point where policy dictates that continuing attempts to recover are no longer appropriate. For commercial lending, a write-off occurs if the loan facility with the customer is restructured, the asset is under administration and th

CRITICAL ACCOUNTING JUDGEMENTS

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES	12 Months Ended
	Dec. 31, 2020
Disclosure of accounting judgements and estimates [Abstract]
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES	3 CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES The preparation of the Group’s financial statements in accordance with IFRS requires management to make judgements, estimates and assumptions in applying the accounting policies that affect the reported amounts of assets, liabilities, income and expenses. Due to the inherent uncertainty in making estimates, actual results reported in future periods may be based upon amounts which differ from those estimates. Estimates, judgements and assumptions are continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. The significant judgements made by management in applying the Group’s accounting policies and the key sources of estimation uncertainty in these financial statements, which together are deemed critical to the Group’s results and financial position, are as follows: Allowance for expected credit losses Key judgements: Determining an appropriate definition of default against which a probability of default, exposure at default and loss given default parameter can be evaluated The appropriate lifetime of an exposure to credit risk for the assessment of lifetime losses, notably on revolving products Establishing the criteria for a significant increase in credit risk The use of management judgement alongside impairment modelling processes to adjust inputs, parameters and outputs to reflect risks not captured by models Key estimates: Base case and Multiple Economic Scenarios (MES) assumptions, including the rate of unemployment and the rate of change of house prices, required for creation of MES scenarios and forward looking credit parameters These judgements and estimates are subject to significant uncertainty. The Group recognises an allowance for expected credit losses for loans and advances to customers and banks, other financial assets held at amortised cost, financial assets measured at fair value through other comprehensive income and certain loan commitment and financial guarantee contracts. At 31 December 2020 the Group’s expected credit loss allowance was £6,132 million (2019: £3,380 million), of which £5,706 million (2019: £3,207 million) was in respect of drawn balances; and the Bank’s expected credit loss allowance was £2,558 million (2019: £1,336 million), of which £2,313 million (2019: £1,246 million) was in respect of drawn balances. The calculation of the Group’s expected credit loss (ECL) allowances and provisions against loan commitments and guarantees under IFRS 9 requires the Group to make a number of judgements, assumptions and estimates. The most significant are set out below. Definition of default The probability of default (PD) of an exposure, both over a 12 month period and over its lifetime, is a key input to the measurement of the ECL allowance. Default has occurred when there is evidence that the customer is experiencing significant financial difficulty which is likely to affect the ability to repay amounts due. The definition of default adopted by the Group is described in note 2(H) Impairment of financial assets. The Group has rebutted the presumption in IFRS 9 that default occurs no later than when a payment is 90 days past due for UK mortgages. As a result, at 31 December 2020, approximately £0.6 billion of UK mortgages (2019: £0.6 billion) were classified as Stage 2 rather than Stage 3; the impact on the Group’s ECL allowance was not material. Lifetime of an exposure A range of approaches, segmented by product type, has been adopted by the Group to estimate a product’s expected life. These include using the full contractual life and taking into account behavioural factors such as early repayments and refinancing. For non-revolving retail assets, the Group has assumed the expected life for each product to be the time taken for all significant losses to be observed. For retail revolving products, the Group has considered the losses beyond the contractual term over which the Group is exposed to credit risk. For commercial overdraft facilities, the average behavioural life has been used. Changes to the assumed expected lives of the Group’s assets could impact the ECL allowance recognised by the Group. The assessment of SICR and corresponding lifetime loss, and the PD, of a financial asset deemed to be Stage 2, or Stage 3, is dependent on its expected life. Significant increase in credit risk Performing assets are classified as either Stage 1 or Stage 2. An ECL allowance equivalent to 12 months expected losses is established against assets in Stage 1; assets classified as Stage 2 carry an ECL allowance equivalent to lifetime expected losses. Assets are transferred from Stage 1 to Stage 2 when there has been a significant increase in credit risk (SICR) since initial recognition. Credit impaired assets are transferred to Stage 3 with a lifetime expected losses allowance. The Group uses both quantitative and qualitative indicators to determine whether there has been a SICR for an asset. For Retail, the following tables set out the Retail Master Scale (RMS) grade triggers which result in a SICR for financial assets and the PD boundaries for each RMS grade. Credit cards SICR triggers have been refined in 2020 following a review of sensitivity to changes in economic assumptions, 2019 triggers were previously aligned to Loans and overdrafts. The impact of this has been approximately £1.4 billion of additional assets being classified as Stage 2 at 31 December 2020, with a corresponding increase in the ECL of £48 million resulting from the transfer to a lifetime expected loss. SICR Triggers for key Retail portfolios Origination grade 1 2 3 4 5 6 7 Mortgages SICR grade 5 5 6 7 8 9 10 Credit cards SICR grade 4 5 6 7 8 9 10 Loans and overdrafts SICR grade 5 6 7 8 9 10 11 RMS grade 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PD boundary % 0.10 0.40 0.80 1.20 2.50 4.50 7.50 10.00 14.00 20.00 30.00 45.00 99.99 100.00 For Commercial a doubling of PD with a minimum increase in PD of 1 per cent and a resulting change in the underlying grade is treated as a SICR. The Group uses the internal credit risk classification and watchlist as qualitative indicators to identify a SICR. The Group does not use the low credit risk exemption in its staging assessments. The use of a payment holiday in and of itself has not been judged to indicate a significant increase in credit risk, nor forbearance, with the underlying long-term credit risk deemed to be driven by economic conditions and captured through the use of forward-looking models. These portfolio level models are capturing the anticipated volume of increased defaults and therefore an appropriate assessment of staging and expected credit loss. During 2020, the Group has granted payment holidays on Retail loans and advances, £6.4 billion remained in place at 31 December 2020, £4.3 billion of these balances were classified as Stage 1. If all of these assets were classified as Stage 2, the Group's ECL would have been less than £50 million higher. All financial assets are assumed to have suffered a SICR if they are more than 30 days past due; non-mortgage Retail financial assets are also assumed to have suffered a SICR if they are in arrears on three or more separate occasions in a rolling twelve month period. Financial assets are classified as credit impaired if they are 90 days past due except for UK mortgages where a 180 days backstop is used. A Stage 3 asset that is no longer credit-impaired is transferred back to Stage 2 as no cure period is applied to Stage 3. If an exposure that is classified as Stage 2 no longer meets the SICR criteria, which in some cases include a minimum cure period, it is moved back to Stage 1. The setting of precise trigger points combined with risk indicators requires judgement. The use of different trigger points may have a material impact upon the size of the ECL allowance. The Group monitors the effectiveness of SICR criteria on an ongoing basis. Generation of Multiple Economic Scenarios (MES) The measurement of expected credit losses is required to reflect an unbiased probability-weighted range of possible future outcomes. The Group considers the choice of approach used to generate the range of economic outcomes to be judgemental, given several methods can be adopted. In addition to a defined base case, as used for planning, the Group’s approach relies on model-generated scenarios, reducing scope for bias in the selection of scenarios and their weightings. The conditioning assumptions underpinning the base case scenario reflect the Group’s best view of future events. Where outcomes materially diverge from the conditioning assumptions adopted, the base case scenario is updated. The base case is therefore central to the range of outcomes created as no alternative conditioning assumptions are factored into the model-generated scenarios. The Group models a full distribution of economic scenarios around this base case, ranking them using estimated relationships with industry-wide historical loss data. The full distribution is summarised by a practical number of scenarios to run through ECL models representing four sections: an upside, the base case, and a downside scenario weighted at 30 per cent each, with a severe downside scenario weighted at 10 per cent. With the base case already pre-defined, the other three scenarios are constructed as averages of constituent modelled scenarios around the 15th, 75th and 95th percentiles of the distribution. The scenario weights therefore represent the allocation to each summary segment of the distribution and not a subjective view on likelihood. The inclusion of a severe downside scenario with a smaller weighting but relatively large credit losses, ensures the non-linearity of losses in the tail of the distribution is captured when ECL based on the weighted result of the four scenarios is calculated. A committee under the chairmanship of the Chief Economist meets at least quarterly to review and, if appropriate, recommend changes to the method by which economic scenarios are generated; for approval by the Chief Financial Officer and Chief Risk Officer. In 2020, a change was made to the way in which the distribution of scenarios is created. This change allows for a greater dispersal of economic outcomes in the early periods of the forecast, to recognise the increased near-term profile of risks present since the onset of the coronavirus pandemic. This change allows for a wider distribution of losses both on the upside and downside, although is most evident in the severe downside scenario, given it represents a more adverse segment of the distribution. The change is estimated to have driven an additional £200 million of ECL resulting from the inclusion of more adverse economic outcomes. Base Case and MES Economic Assumptions The Group’s base case economic scenario has continued to be revised in light of the impact of the coronavirus pandemic in the UK and globally. The scenario reflects judgements of the net effect of government-mandated restrictions on economic activity, large-scale government interventions, and behavioural changes by households and businesses that may persist beyond the rollout of coronavirus vaccination programmes. Despite large-scale vaccination efforts commencing in the UK and globally, there remains considerable uncertainty about the pace and eventual extent of the post-pandemic recovery. The Group’s current base case scenario builds in three key conditioning assumptions. First, the UK vaccine rollout successfully protects the elderly, key workers and the clinically vulnerable by mid-2021. Second, national lockdowns end by April 2021, allowing a phased return to a tiered system of restrictions that are progressively eased in the second quarter and second half of 2021, leaving only limited restrictions in place by the end of 2021. Third, government policy measures including specifically the furlough scheme continue to provide support for the duration of severe economic restrictions, through to mid-2021. Conditioned on the above assumptions and despite the recovery in economic activity resuming from the second quarter of 2021, the Group’s base case outlook assumes a rise in the unemployment rate and weakness in residential and commercial property prices. Risks around this base case economic view lie in both directions and are partly captured by the MES generated. But uncertainties relating to the key conditioning assumptions, including epidemiological developments and the efficacy of vaccine rollouts, are not specifically captured by the MES scenarios. These specific risks have been recognised outside the modelled scenarios published below. The Group has accommodated the latest available information at the reporting date in defining its base case scenario and generating the MES. The scenarios include forecasts for key variables in the fourth quarter of 2020, for which actuals may have since emerged prior to publication. Base case scenario by quarter 1 First Second Third Fourth First Second Third Fourth Base case % % % % % % % % Gross domestic product (3.0) (18.8) 16.0 (1.9) (3.8) 5.6 3.6 1.5 UK Bank Rate 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 Unemployment rate 4.0 4.1 4.8 5.0 5.2 6.5 8.0 7.5 House price growth 2.8 2.6 7.2 5.9 5.5 4.7 (1.6) (3.8) Commercial real estate price growth (5.0) (7.8) (7.8) (7.0) (6.1) (2.9) (2.2) (1.7) 1 Gross domestic product presented quarter on quarter, house price growth and commercial real estate growth presented year on year - i.e. from the equivalent quarter the previous year. Bank Rate is presented end quarter. Scenarios by year Key annual assumptions made by the Group are shown below. Gross domestic product is presented as an annual change, house price growth and commercial real estate price growth are presented as the growth in the respective indices within the period. UK Bank Rate and unemployment rate are averages for the period. 2020 2021 2022 2023 2024 % % % % % Upside Gross domestic product (10.5) 3.7 5.7 1.7 1.5 UK Bank Rate 0.10 1.14 1.27 1.20 1.21 Unemployment rate 4.3 5.4 5.4 5.0 4.5 House price growth 6.3 (1.4) 5.2 6.0 5.0 Commercial real estate price growth (4.6) 9.3 3.9 2.1 0.3 Base case Gross domestic product (10.5) 3.0 6.0 1.7 1.4 UK Bank Rate 0.10 0.10 0.10 0.21 0.25 Unemployment rate 4.5 6.8 6.8 6.1 5.5 House price growth 5.9 (3.8) 0.5 1.5 1.5 Commercial real estate price growth (7.0) (1.7) 1.6 1.1 0.6 Downside Gross domestic product (10.6) 1.7 5.1 1.4 1.4 UK Bank Rate 0.10 0.06 0.02 0.02 0.03 Unemployment rate 4.6 7.9 8.4 7.8 7.0 House price growth 5.6 (8.4) (6.5) (4.7) (3.0) Commercial real estate price growth (8.7) (10.6) (3.2) (0.8) (0.8) Severe downside Gross domestic product (10.8) 0.3 4.8 1.3 1.2 UK Bank Rate 0.10 0.00 0.00 0.01 0.01 Unemployment rate 4.8 9.9 10.7 9.8 8.7 House price growth 5.3 (11.1) (12.5) (10.7) (7.6) Commercial real estate price growth (11.0) (21.4) (9.8) (3.9) (0.8) Economic assumptions - five year average The key UK economic assumptions made by the Group averaged over a five-year period are shown below. The five-year period reflects movements within the current reporting year such that 31 December 2020 reflects five years 2020 to 2024. The prior year comparative data has been re-presented to align to the equivalent period, 2019 to 2023. The inclusion of the reporting year within the five-year period reflects the need to predict variables which remain unpublished at the reporting date, and recognises that credit models utilise both level and annual change in calculating ECL. The use of calendar years also maintains a comparability between tables disclosed. At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe % % % % % % % % Gross domestic product 0.3 0.1 (0.4) (0.8) 1.6 1.3 1.0 0.3 UK Bank Rate 0.98 0.15 0.05 0.02 1.87 1.15 0.51 0.17 Unemployment rate 5.0 5.9 7.1 8.8 3.9 4.3 5.5 6.7 House price growth 4.2 1.1 (3.5) (7.5) 5.1 1.4 (2.5) (7.0) Commercial real estate price growth 2.1 (1.1) (4.9) (9.7) 1.6 (0.3) (3.9) (7.3) Economic assumptions - start to peak At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe % % % % % % % % Gross domestic product 1.4 0.8 (1.7) (3.0) 8.4 6.6 5.5 1.8 UK Bank Rate 1.44 0.25 0.10 0.10 2.56 1.75 0.75 0.75 Unemployment rate 6.5 8.0 9.3 11.5 4.4 4.6 6.9 8.3 House price growth 22.6 5.9 5.6 5.3 28.3 7.1 2.7 2.7 Commercial real estate price growth 11.0 (2.7) (2.7) (2.7) 8.8 (0.8) (0.8) (0.8) Economic assumptions - start to trough At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe % % % % % % % % Gross domestic product (21.2) (21.2) (21.2) (21.2) 0.3 0.3 0.3 (2.4) UK Bank Rate 0.10 0.10 0.01 0.00 0.75 0.75 0.35 0.01 Unemployment rate 4.0 4.0 4.0 4.0 3.4 3.8 3.8 3.8 House price growth (0.5) (0.5) (16.4) (32.4) 1.5 0.0 (12.0) (30.3) Commercial real estate price growth (6.9) (9.0) (22.2) (39.9) (1.4) (2.3) (17.9) (31.4) ECL sensitivity to economic assumptions The table below shows the extent to which a higher ECL allowance has been recognised to take account of forward looking information from the weighted multiple economic scenarios. A significant difference between these bases arises on UK mortgages as the probability-weighted ECL includes the impact of house price movements on the loss given default (LGD). Commercial Banking also reflects movements in the loss given default, whereas for Other Retail portfolios only the probability of default responds to changes in the economic outlook. ECL applied through individual assessments and post-model adjustments is reported flat against each economic scenario, reflecting the basis on which they are evaluated. Judgements applied through changes to inputs are reflected in the scenario sensitivities. At 31 December 2020 At 31 December 2019 Base case Probability Difference Base case Probability Difference Impact of multiple economic scenarios £m £m £m £m £m £m UK mortgages 803 1,027 224 464 569 105 Other Retail 2,310 2,368 58 1,492 1,521 29 Commercial Banking 2,102 2,315 213 1,206 1,263 57 Other 422 422 — 27 27 — 5,637 6,132 495 3,189 3,380 191 The table below shows the Group’s ECL for the upside, base case, downside and severe downside scenarios. The stage allocation for an asset is based on the overall scenario probability-weighted PD and, hence, the Stage 2 allocation is constant across all the scenarios. ECL applied through individual assessments and post-model adjustments is reported flat against each economic scenario, reflecting the basis on which they are evaluated. Judgements applied through changes to inputs are reflected in the scenario sensitivities. At 31 December 2020 At 31 December 2019 Probability- Upside Base case Downside Severe Probability- Upside Base case Downside Severe £m £m £m £m £m £m £m £m £m £m UK mortgages 1,027 614 803 1,237 2,306 569 317 464 653 1,389 Other Retail 2,368 2,181 2,310 2,487 2,745 1,521 1,443 1,492 1,564 1,712 Commercial Banking 2,315 1,853 2,102 2,575 3,554 1,263 1,163 1,206 1,327 1,535 Other 422 420 422 422 428 27 27 27 27 27 ECL allowance 6,132 5,068 5,637 6,721 9,033 3,380 2,950 3,189 3,571 4,663 The table below shows the Group’s ECL for the upside, base case, downside and severe downside scenarios, with stage allocation based on each specific scenario. ECL applied through individual assessments and post-model adjustments is reported flat against each economic scenario, reflecting the basis on which they are evaluated. Judgements applied through changes to inputs are reflected in the scenario sensitivities. A probability-weighted scenario is not shown as this does not reflect the basis on which ECL is reported. At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe £m £m £m £m £m £m £m £m UK mortgages 602 797 1,269 2,578 311 461 670 1,667 Other Retail 2,154 2,299 2,509 2,819 1,435 1,486 1,570 1,740 Commercial Banking 1,842 2,079 2,629 3,985 1,154 1,202 1,335 1,573 Other 420 421 422 429 27 27 27 27 ECL allowance 5,018 5,596 6,829 9,811 2,927 3,176 3,602 5,007 The impact of changes in the UK unemployment rate and House Price Index (HPI) have also been assessed. Although such changes would not be observed in isolation, as economic indicators tend to be correlated in a coherent scenario, this gives insight into the sensitivity of the Group’s ECL to gradual changes in these two critical economic factors. The assessment has been made against the base case with the reported staging unchanged. The table below shows the impact on the Group’s ECL in respect of UK mortgages resulting from a decrease/increase in loss given default for a 10 percentage point (pp) increase or decrease in the UK House Price Index (HPI). The increase/decrease is presented based on the adjustment phased evenly over the first ten quarters of the base case scenario. At 31 December 2020 At 31 December 2019 10pp increase 10pp decrease 10pp increase 10pp decrease ECL impact, £m (206) 284 (110) 147 The table below shows the impact on the Group’s ECL resulting from a 1 percentage point (pp) increase or decrease in the UK unemployment rate. The increase or decrease is presented based on the adjustment phased evenly over the first ten quarters of the base case scenario. An immediate increase or decrease would drive a more material ECL impact as it would be fully reflected in both 12 month and lifetime PDs. At 31 December 2020 At 31 December 2019 1pp increase in 1pp decrease in 1pp increase in 1pp decrease in £m £m £m £m UK mortgages 25 (23) 33 (34) Other Retail 54 (54) 39 (54) Commercial Banking 123 (110) 68 (54) Other 1 (1) 1 (1) ECL impact 203 (188) 141 (143) Individual assessments Stage 3 ECL in Commercial Banking is largely assessed on an individual basis using bespoke assessment of loss for each specific client. These assessments are carried out by the Business Support Unit based on detailed reviews and expected recovery strategies. While these assessments are based on the Group’s latest economic view, the use of group-wide multiple economic scenarios and weightings is not considered appropriate for these cases due to their individual characteristics. In place of this a range of case specific outcomes are considered with any alternative better or worse outcomes that carry a 25 per cent likelihood taken into account in establishing a probability-weighted ECL. At 31 December 2020 individually assessed provisions for Commercial Banking were £1,215 million (2019: £812 million) which reflected a range of £977 million to £1,536 million (2019: £438 million to £1,095 million), based on the range of alternative outcomes considered. Application of judgement in adjustments to modelled ECL Impairment models fall within the Group’s Model Risk framework with model monitoring, periodic validation and back testing performed on model components (i.e. probability of default, exposure at default and loss given default). Limitations in the Group’s impairment models or data inputs, may be identified through the ongoing assessment and validation of the output of the models. In these circumstances, management make appropriate adjustments to the Group’s allowance for impairment losses to ensure that the overall provision adequately reflects all material risks. These adjustments are determined by considering the particular attributes of exposures which have not been adequately captured by the impairment models and range from changes to model inputs and parameters, at account level, through to more qualitative post-model overlays. Judgements are not typically assessed under each distinct economic scenario used to generate ECL, but instead are applied on the basis of final modelled ECL which reflects the probability weighted view of all scenarios. All adjustments are reviewed quarterly and are subject to internal review and challenge, including by the Audit Committee, to ensure that amounts are appropriately calculated and that there are specific release criteria within a reasonable timeframe. At 31 December 2020 the coronavirus pandemic and the various support measures that have been put in place have resulted in an economic environment which differs significantly from the historical economic conditions upon which the impairment models have been built. As a result there is a greater need for management judgements to be applied alongside the use of models. At 31 December 2020 management judgement resulted in additional ECL allowances totalling £1,333 million (2019: £153 million). This comprises judgements added due to COVID-19 in the year and other judgements not directly linked to COVID-19 but which have increased in size under the current outlook. The table below analyses total ECL allowance at 31 December 2020 by portfolio, separately identifying the amounts that have been modelled, those that have been individually assessed and those arising through the application of management judgement. Modelled Individually Judgements 1 Other Total ECL £m £m £m £m £m At 31 December 2020 UK mortgages 481 — 36 510 1,027 Other Retail 2,060 — 321 (13) 2,368 Commercial Banking 1,021 1,215 81 (2) 2,315 Other 22 — 400 — 422 Total 3,584 1,215 838 495 6,132 At 31 December 2019 UK mortgages 386 — — 183 569 Other Retail 1,531 — — (10) 1,521 Commercial Banking 471 812 — (20) 1,263 Other 27 — — — 27 Total 2,415 812 — 153 3,380 1 Judgements introduced in 2020 due to the impact that COVID-19 and resulting interventions have had on the Group’s economic outlook and observed loss experience, which have required additional model limitations to be addressed. Judgements due to COVID-19 UK mortgages: £36 million This reflects an adjustment made to reflect an increase in the time assumed between default and repossession as a result of the Group temporarily suspending the repossession of properties to support customers during the pandemic. Other Retail: £321 million These adjustments principally comprise: Recognition of impact of support measures: £218 million The use of payment holidays along with subdued levels of consumer spending is judged to have temporarily reduced the flow of accounts into arrears and default and to have also improved average credit scores across portfolios. Management believes that the resulting position does not fully reflect the underlying credit risk in the portfolios. Adjustments have therefore been made to increase expected future rates of default and remove the impact of the observed improvement in average credit scores. Incorporation of forward-looking LGDs: £86 million Modelled LGDs in non-mortgage Retail portfolios are predominantly based on observed customer behaviour and resulting incurred losses. Management believes that this may not be representative of future experience, given the current economic outlook, and consequently an adjustment has been made to increase forward-looking LGDs to reflect a deterioration in cure and recovery rates. The impact has been estimated by using experience of losses in previous downturns and management’s view of relative comparability of anticipated economic scenarios. Commercial Banking: £81 million This adjustment principally comprises: Adjustment to economic variables used as inputs to models: £91 million Management does not believe that the observed corporate insolvency rates used as an input to Commercial default models adequately reflect the current economic situation and outlook given the temporary government support. As a result, the observed reductions in the rate of insolvencies have been replaced with an increase proportionate to that seen in unemployment to generate a level of predicted defaults. Other: £400 million Central overlay in respect of economic uncertainty: £400 million An important element of the methodology used to calculate the Group’s ECL allowance is the determination of a base case economic scenario, predicated on certain conditioning assumptions, from which alternative scenarios are derived using stochastic shocks. The rapid evolution of the pandemic and significant changes that this has brought about could continue into 2021 and may partially invalidate the conditioning assumptions that underpin the Group’s base case scenario. Management believes that the risks to the conditioning assumptions around the base case scenario are markedly to the downside, reflecting notably the potential for a material delay in the vaccination programme or reduction in its effectiveness from further virus mutation and the corresponding delayed withdrawal of restrictions on social interaction or introduction of further lockdowns. The Group's ECL allowances are required to reflect an unbiased probability-weighted view of all possible future outcomes and therefore management believes that an adjustment is required to capture these additional risks. An adjustment of £400 million has been made to increase the Group’s ECL allowances to reflect this increased uncertainty around the conditioning assumptions. This equates to a 1 percentage point increase in unemployment allied with a 5 per cent lower HPI in 2021, reflecting a more immediate and therefore greater ECL impact than the gradual increase reflected in the stated univariate sensitivity. It is proportionate to the level of volatility seen in forecasts as the pandemic has unfolded and is also equivalent to a 10 per cent re-weighting from the upside to the severe downside scenario. The adjustment, which has not been allocated to a specific portfolio, has been allocated against Stage 1 assets given the downside risks are largely considered to relate to exposures with currently low default probabilities, the majority of which are in Stage 1. Through 2021 the scale of the uncertainty is expected to diminish and the need for this adjustment will then be reassessed. Other judgements UK mortgages: £510 million (2019: £183 million) These adjustments principally comprise: Adjustment to modelled forecast parameters: £193 million (2019: £nil) Adjustments have been required to the estimated defaults used within the ECL calculation for UK mortgages following the adoption of new default forecast models. Forecast models which predict quarterly defaults based on several economic variables have been developed using the response from the previous recession, as per usual modelling best practice. However, management believe further adjustments are necessary when the results of these models have been benchmarked to observed levels, given the atypical nature of the current economic outlook. These were derived using historical observed default rates under previous downturn conditions to ensure that the resulting forecast best reflected management’s view given the current economic outlook. The adjustment to forward looking parameters prior to their use in ECL calculations ensures that all downstream account level calculations reflect the Group’s best view of credit losses in respect of the economic scenarios stated. As such this in-model adjustment is reflected within all scenarios, assessment of staging and in subsequent assessment of all post-model adjustments. End-of-term interest only: £179 million (2019: £132 million) The current definition of default used in the UK mortgages impairment model excludes past term interest only accounts that continue to make interest payments but have missed their capital payment upon maturity of the loan. This adjustment therefore mitigates the risk that the model understates the credit losses associated with interest-only accounts which have missed, or will potentially miss, their final capital payment. For those accounts that have reached end of term this adjustment manually overwrites PDs to 70 per cent or 100 per cent, thereby moving them into Stage 2, or Stage 3, depending on whether they are deemed performing, or non-performing respectively. For interest-only accounts with six years or less to maturity an appropriate incremental PD uplift is made to PDs based on the probability of missing a future capital payment, assessed through segmentation of behaviour score, debt-to-value and worst ever arrears status. The increase in the judgement in 2020 is primarily driven by an increase in the stock of long-term defaults following COVID-19 related litigation suspension. Long-term defaults: £87 million (2019: £33 million) The Group suspended mortgage litigation activity between late 2014 and mid 2018 as changes were implemented to the treatment of amounts in arrears, interrupting the natural flow of accounts to possession. An adjustment is made to ensure adequate provision coverage considering the resulting build-

SEGMENTAL ANALYSIS

SEGMENTAL ANALYSIS	12 Months Ended
	Dec. 31, 2020
Disclosure of operating segments [abstract]
SEGMENTAL ANALYSIS	4 SEGMENTAL ANALYSIS The Group provides a wide range of banking and financial services in the UK and in certain locations overseas. The Group Executive Committee (GEC) of the Lloyds Banking Group has been determined to be the chief operating decision maker for the Group. The Group’s operating segments reflect its organisational and management structures. The GEC reviews the Group’s internal reporting based around these segments in order to assess performance and allocate resources. GEC considers interest income and expense on a net basis and consequently the total interest income and expense for all reportable segments is presented net. The segments are differentiated by the type of products provided and by whether the customers are individuals or corporate entities. During 2020, the Group migrated certain customer relationships from the SME business within Commercial Banking to Business Banking within Retail; the Group has also revised its approach to internal funding charges, including the adoption of the Sterling Overnight Index Average (SONIA) interest rate benchmark in place of LIBOR. Comparatives have been restated accordingly. The Group’s activities are organised into two financial reporting segments: Retail and Commercial Banking. Retail offers a broad range of financial service products, including current accounts, savings, mortgages, motor finance and unsecured consumer lending to personal and small business customers. Commercial Banking provides a range of products and services such as lending, transactional banking, working capital management, risk management and debt capital markets services to SMEs, corporates and financial institutions. Income and expenditure not attributed to these financial reporting segments, including the costs of certain central and head office functions, is disclosed as Other. Inter-segment services are generally recharged at cost, although some attract a margin. Inter-segment lending and deposits are generally entered into at market rates, except that non-interest bearing balances are priced at a rate that reflects the external yield that could be earned on such funds. For the majority of those derivative contracts entered into by business units for risk management purposes, the business unit recognises the net interest income or expense on an accrual accounting basis and transfers the remainder of the movement in the fair value of the derivative to the central function where the resulting accounting volatility is managed where possible through the establishment of hedge accounting relationships. Any change in fair value of the hedged instrument attributable to the hedged risk is also recorded within the central function. This allocation of the fair value of the derivative and change in fair value of the hedged instrument attributable to the hedged risk avoids accounting asymmetry in segmental results and leads to accounting volatility, which is managed centrally and reported within Other. Retail Commercial Other Group £m £m £m £m Year ended 31 December 2020 Net interest income 8,321 2,300 149 10,770 Other income 1,735 673 1,407 3,815 Total income 10,056 2,973 1,556 14,585 Costs (5,816) (1,673) (1,707) (9,196) Impairment charge (2,384) (1,280) (396) (4,060) Profit (loss) before tax 1,856 20 (547) 1,329 External income 11,859 2,496 230 14,585 Inter-segment income (1,803) 477 1,326 — Segment income 10,056 2,973 1,556 14,585 Segment external assets 359,171 83,155 157,613 599,939 Segment external liabilities 295,216 126,008 137,597 558,821 Analysis of segment other income: Current accounts 497 109 4 610 Credit and debit card fees 517 231 — 748 Commercial banking fees — 169 — 169 Private banking and asset management — — 1 1 Factoring — 76 — 76 Other fees and commissions 63 157 100 320 Fees and commissions receivable 1,077 742 105 1,924 Fees and commissions payable (571) (195) (143) (909) Net fee and commission income 506 547 (38) 1,015 Operating lease rental income 1,104 16 — 1,120 Gains less losses on disposal of financial assets at fair value through other comprehensive income — — 145 145 Other income 125 110 1,300 1,535 Segment other income 1,735 673 1,407 3,815 Other segment items reflected in income statement above: Depreciation and amortisation 1,760 242 668 2,670 Defined benefit scheme charges 97 28 122 247 Other segment items: Additions to fixed assets 1,684 89 1,042 2,815 Investments in joint ventures and associates at end of year 4 — — 4 Retail Commercial Other Group £m £m £m £m Year ended 31 December 2019 1 Net interest income 9,129 2,691 400 12,220 Other income 2,025 870 1,493 4,388 Total income 11,154 3,561 1,893 16,608 Costs (7,912) (1,818) (1,393) (11,123) Impairment charge (1,038) (313) (11) (1,362) Profit before tax 2,204 1,430 489 4,123 External income 13,111 2,773 724 16,608 Inter-segment income (1,957) 788 1,169 — Segment income 11,154 3,561 1,893 16,608 Segment external assets 351,301 89,630 140,437 581,368 Segment external liabilities 261,019 125,240 156,210 542,469 Analysis of segment other income: Current accounts 518 133 5 656 Credit and debit card fees 634 327 — 961 Commercial banking fees — 166 — 166 Private banking and asset management — — 38 38 Factoring — 103 — 103 Other fees and commissions 68 219 152 439 Fees and commissions receivable 1,220 948 195 2,363 Fees and commissions payable (571) (299) (157) (1,027) Net fee and commission income 649 649 38 1,336 Operating lease rental income 1,225 22 — 1,247 Gains less losses on disposal of financial assets at fair value through other comprehensive income — (5) 201 196 Other income 151 204 1,254 1,609 Segment other income 2,025 870 1,493 4,388 Other segment items reflected in income statement above: Depreciation and amortisation 1,712 315 575 2,602 Defined benefit scheme charges 108 43 94 245 Other segment items: Additions to fixed assets 2,208 247 1,097 3,552 Investments in joint ventures and associates at end of year 3 — — 3 1 Restated, see page F-31. Retail Commercial Other Continuing £m £m £m £m Year ended 31 December 2018 1 Net interest income 9,379 2,893 482 12,754 Other income 1,922 1,447 851 4,220 Total income 11,301 4,340 1,333 16,974 Costs (7,709) (2,160) (1,899) (11,768) Impairment (charge) credit (861) (80) 15 (926) Profit (loss) before tax 2,731 2,100 (551) 4,280 External income 12,924 3,722 328 16,974 Inter-segment income (1,623) 618 1,005 — Segment income 11,301 4,340 1,333 16,974 Segment external assets 349,755 115,444 128,325 593,524 Segment external liabilities 261,457 137,172 155,145 553,774 Analysis of segment other income: Current accounts 503 139 5 647 Credit and debit card fees 646 328 — 974 Commercial banking fees — 271 — 271 Private banking and asset management — 2 92 94 Factoring — 83 — 83 Other fees and commissions 57 248 123 428 Fees and commissions receivable 1,206 1,071 220 2,497 Fees and commissions payable (757) (310) (161) (1,228) Net fee and commission income 449 761 59 1,269 Operating lease rental income 1,305 36 — 1,341 Gains less losses on disposal of financial assets at fair value through other comprehensive income — — 268 268 Other income 168 650 524 1,342 Segment other income 1,922 1,447 851 4,220 Other segment items reflected in income statement above: Depreciation and amortisation 1,573 278 498 2,349 Defined benefit scheme charges 121 48 231 400 Other segment items: Additions to fixed assets 2,092 208 1,078 3,378 Investments in joint ventures and associates at end of year 4 — 1 5 1 Restated, see page F-31. The Group’s operations are predominantly UK-based and as a result an analysis between UK and non-UK activities is not provided. The Group’s discontinued operations in 2018 were previously in its Insurance segment (see note 13).

NET INTEREST INCOME

NET INTEREST INCOME	12 Months Ended
	Dec. 31, 2020
Disclosure of interest income (expense) [Abstract]
NET INTEREST INCOME	5 NET INTEREST INCOME Weighted average 2020 2019 2018 2020 2019 2018 % % % £m £m £m Interest income: Loans and advances to customers 2.76 3.21 3.23 13,358 15,281 15,049 Loans and advances to banks 0.20 0.57 0.76 114 269 462 Debt securities 1.82 2.26 1.61 92 118 66 Interest income on financial assets held at amortised cost 2.48 2.97 2.93 13,564 15,668 15,577 Financial assets at fair value through other comprehensive income 1.12 1.64 1.98 302 430 639 Total interest income 1 2.42 2.90 2.88 13,866 16,098 16,216 Interest expense: Deposits from banks, excluding liabilities under sale and repurchase transactions 1.19 1.39 1.36 (82) (87) (81) Customer deposits, excluding liabilities under sale and repurchase transactions 0.40 0.65 0.60 (1,270) (2,054) (1,997) Debt securities in issue 2 1.13 0.71 0.10 (761) (476) (66) Subordinated liabilities 7.19 9.89 10.18 (827) (921) (1,072) Lease liabilities 2.36 2.41 2.44 (39) (39) (1) Liabilities under sale and repurchase agreements 0.36 1.08 0.87 (117) (301) (245) Total interest expense 3 0.71 0.91 0.78 (3,096) (3,878) (3,462) Net interest income 10,770 12,220 12,754 1 Includes £10 million (2019: £26 million; 2018: £31 million) of interest income on liabilities with negative interest rates and £42 million (2019: £39 million; 2018: £45 million) in respect of interest income on finance leases. 2 The impact of the Group’s hedging arrangements is included on this line; excluding this impact the weighted average effective interest rate in respect of debt securities in issue would be 2.42 per cent (2019: 2.25 per cent; 2018: 2.74 per cent). 3 Includes £23 million (2019: £119 million; 2018: £10 million) of interest expense on assets with negative interest rates.

NET FEE AND COMMISSION INCOME

NET FEE AND COMMISSION INCOME	12 Months Ended
	Dec. 31, 2020
Disclosure of fee and commission income (expense) [Abstract]
NET FEE AND COMMISSION INCOME	6 NET FEE AND COMMISSION INCOME 2020 2019 2018 £m £m £m Fee and commission income: Current accounts 610 656 647 Credit and debit card fees 748 961 974 Commercial banking fees 169 166 271 Private banking and asset management 1 38 94 Factoring 76 103 83 Other fees and commissions 320 439 428 Total fee and commission income 1,924 2,363 2,497 Fee and commission expense (909) (1,027) (1,228) Net fee and commission income 1,015 1,336 1,269 Fees and commissions which are an integral part of the effective interest rate form part of net interest income shown in note 5. Fees and commissions relating to instruments that are held at fair value through profit or loss are included within net trading income shown in note 7. At 31 December 2020, the Group held on its balance sheet £76 million (31 December 2019: £105 million) in respect of services provided to customers and £83 million (31 December 2019: £120 million) in respect of amounts received from customers for services to be provided after the balance sheet date. Current unsatisfied performance obligations amount to £172 million (31 December 2019: £250 million); the Group expects to receive substantially all of this revenue by 2023. Income recognised during the year included £18 million (31 December 2019: £54 million) in respect of amounts included in the contract liability balance at the start of the year and £nil (31 December 2019: £9 million) in respect of amounts from performance obligations satisfied in previous years. The most significant performance obligations undertaken by the Group are in respect of current accounts, the provision of other banking services for commercial customers and credit and debit card services. In respect of current accounts, the Group receives fees for the provision of bank account and transaction services such as ATM services, fund transfers, overdraft facilities and other value-added offerings. For commercial customers, alongside its provision of current accounts, the Group provides other corporate banking services including factoring and commitments to provide loan financing. Loan commitment fees are included in fees and commissions where the loan is not expected to be drawn down by the customer. The Group receives interchange and merchant fees, together with fees for overseas use and cash advances, for provision of card services to cardholders and merchants.

NET TRADING INCOME

NET TRADING INCOME	12 Months Ended
	Dec. 31, 2020
Disclosure of trading income (expense) [Abstract]
NET TRADING INCOME	7 NET TRADING INCOME 2020 2019 2018 £m £m £m Foreign exchange translation gains (losses) 74 (203) 132 Gains on foreign exchange trading transactions 326 336 235 Total foreign exchange 400 133 367 Investment property losses (note 21) (20) (8) — Securities and other gains (see below) 370 235 41 Net trading income 750 360 408 Securities and other gains comprise net gains (losses) arising on assets and liabilities held at fair value through profit or loss as follows: 2020 2019 2018 £m £m £m Net income arising on assets and liabilities mandatorily held at fair value through profit or loss: Financial instruments held for trading 440 427 127 Other financial instruments mandatorily held at fair value through profit or loss: Debt securities, loans and advances 37 25 11 Equity shares 9 (3) 86 486 449 224 Net expense arising on assets and liabilities designated at fair value through profit or loss (116) (214) (183) Securities and other gains 370 235 41

OTHER OPERATING INCOME

OTHER OPERATING INCOME	12 Months Ended
	Dec. 31, 2020
Disclosure of other operating income (expense) [Abstract]
OTHER OPERATING INCOME	8 OTHER OPERATING INCOME 2020 2019 2018 £m £m £m Operating lease rental income 1,120 1,247 1,341 Gains less losses on disposal of financial assets at fair value through other comprehensive income (note 34) 145 196 268 Liability management (216) (101) — Share of results of joint ventures and associates — — 5 Intercompany recharges and other 1,001 1,350 929 Total other operating income 2,050 2,692 2,543

OPERATING EXPENSES

OPERATING EXPENSES	12 Months Ended
	Dec. 31, 2020
Disclosure of expenses [Abstract]
OPERATING EXPENSES	9 OPERATING EXPENSES 2020 2019 2018 £m £m £m Staff costs: Salaries 2,382 2,370 2,379 Performance-based compensation 106 340 485 Social security costs 271 308 330 Pensions and other post-retirement benefit schemes (note 28) 552 518 688 Restructuring costs 161 89 247 Other staff costs 143 360 444 3,615 3,985 4,573 Premises and equipment: Rent and rates 115 114 364 Repairs and maintenance 172 182 189 Other 1 138 150 126 425 446 679 Other expenses: Communications and data processing 996 1,022 1,116 Advertising and promotion 184 173 192 Professional fees 128 144 230 Other 760 561 673 2,068 1,900 2,211 Depreciation and amortisation: Depreciation of property, plant and equipment (note 21) 2,017 2,040 1,849 Amortisation of other intangible assets (note 20) 653 562 500 2,670 2,602 2,349 Goodwill impairment (note 19) 4 — — Total operating expenses, excluding regulatory provisions 8,782 8,933 9,812 Regulatory provisions: Payment protection insurance provision (note 30) 85 1,795 1,395 Other regulatory provisions (note 30) 329 395 561 414 2,190 1,956 Total operating expenses 9,196 11,123 11,768 1 Net of profits on disposal of operating lease assets of £127 million (2019: £41 million; 2018: £60 million). The average number of persons on a headcount basis employed by the Group during the year was as follows: 2020 2019 2018 UK 67,115 69,321 71,017 Overseas 515 762 769 Total 67,630 70,083 71,786

AUDITORS' REMUNERATION

AUDITORS' REMUNERATION	12 Months Ended
	Dec. 31, 2020
Disclosure of auditors' remuneration [Abstract]
AUDITORS' REMUNERATION	10 AUDITORS’ REMUNERATION Fees payable to the Bank’s auditors During the year the auditors earned the following fees: 2020 2019 2018 £m £m £m Fees payable for the audit of the Bank’s current year annual report 4.5 4.2 3.8 Fees payable for other services: Audit of the Bank’s subsidiaries pursuant to legislation 8.9 8.6 10.2 Other services supplied pursuant to legislation 1.6 1.3 1.5 Other services – audit-related fees 0.3 0.2 — All other services 0.9 0.3 0.1 Total fees payable to the Bank’s auditors 16.2 14.6 15.6 Audit fees payable in respect of the statutory audit of Group entities totalled £13.4 million (2019: £12.8 million; 2018: £14.0 million) and non-audit fees, as defined by the Financial Reporting Council's Ethical Guidance, totalled £2.8 million (2019: £1.8 million; 2018: £1.6 million). The following types of services are included in the categories listed above: Audit fees: This category includes fees in respect of the audit of the Group’s annual financial statements and other services in connection with regulatory filings. Other services supplied pursuant to legislation relate primarily to costs incurred in connection with client asset assurance and with the Sarbanes-Oxley Act requirements associated with the audit of the financial statements of Lloyds Banking Group filed on Form 20-F. Audit related fees: This category includes fees in respect of services for assurance and related services that are reasonably related to the performance of the audit or review of the financial statements, for example acting as reporting accountants in respect of debt prospectuses required by the listing rules. Other non-audit fees: This category includes other assurance services not related to the performance of the audit or review of the financial statements, for example the review of controls operated by the Group on behalf of a third party. The auditors are not engaged to provide tax services. It is the Group’s policy to use the auditors on assignments in cases where their knowledge of the Group means that it is neither efficient nor cost effective to employ another firm of accountants. Lloyds Banking Group has procedures that are designed to ensure auditor independence for Lloyds Banking Group plc and all of its subsidiaries, including prohibiting certain non-audit services. All audit and non-audit assignments must be pre-approved by the Lloyds Banking Group audit committee (the Audit Committee) on an individual engagement basis; for certain types of non-audit engagements where the fee is ‘de minimis’ the Audit Committee has pre-approved all assignments subject to confirmation by management. On a quarterly basis, the Audit Committee receives and reviews a report detailing all pre-approved services and amounts paid to the auditors for such pre-approved services. During the year the auditors also earned fees payable by entities outside the consolidated Lloyds Bank Group in respect of the following: 2020 2019 2018 £m £m £m Audits of Group pension schemes 0.1 0.1 0.1 Audits of the unconsolidated Open Ended Investment Companies managed by the Group — — 0.1 Reviews of the financial position of corporate and other borrowers 1.3 — 0.4

IMPAIRMENT

IMPAIRMENT	12 Months Ended
	Dec. 31, 2020
Disclosure of impairment loss and reversal of impairment loss [abstract]
IMPAIRMENT	11 IMPAIRMENT Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m Year ended 31 December 2020 Impact of transfers between stages (168) 925 699 — 1,456 Other changes in credit quality 909 6 1,164 167 2,246 Additions (repayments) 77 173 (52) (30) 168 Methodology and model changes (31) 170 26 — 165 Other items — — 25 — 25 955 349 1,163 137 2,604 Total impairment 787 1,274 1,862 137 4,060 In respect of: Loans and advances to banks 4 — — — 4 Loans and advances to customers 678 1,130 1,853 137 3,798 Due from fellow Lloyds Banking Group undertakings — — — — — Financial assets at amortised cost 682 1,130 1,853 137 3,802 Other assets — — — — — Impairment charge on drawn balances 682 1,130 1,853 137 3,802 Loan commitments and financial guarantees 100 144 9 — 253 Financial assets at fair value through other comprehensive income 5 — — — 5 Total impairment 787 1,274 1,862 137 4,060 Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m Year ended 31 December 2019 Impact of transfers between stages (17) 89 532 — 604 Other changes in credit quality 6 2 939 (106) 841 Additions (repayments) 93 (41) (60) (87) (95) Methodology and model changes 33 (27) 8 — 14 Other items (5) — 3 — (2) 127 (66) 890 (193) 758 Total impairment 110 23 1,422 (193) 1,362 In respect of: Loans and advances to banks — — — — — Loans and advances to customers 141 10 1,382 (193) 1,340 Due from fellow Lloyds Banking Group undertakings (1) — 41 — 40 Financial assets at amortised cost 140 10 1,423 (193) 1,380 Other assets — — — — — Impairment charge on drawn balances 140 10 1,423 (193) 1,380 Loan commitments and financial guarantees (29) 13 (1) — (17) Financial assets at fair value through other comprehensive income (1) — — — (1) Total impairment 110 23 1,422 (193) 1,362 Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m Year ended 31 December 2018 Impact of transfers between stages (10) 18 445 — 453 Other changes in credit quality (23) (14) 545 69 577 Additions (repayments) 19 (84) 27 (69) (107) Methodology and model changes (71) (21) 72 — (20) Other items (13) — 36 — 23 (88) (119) 680 — 473 Total impairment (98) (101) 1,125 — 926 In respect of: Loans and advances to banks 1 — — — 1 Loans and advances to customers (65) (53) 1,129 — 1,011 Financial assets at amortised cost (64) (53) 1,129 — 1,012 Impairment charge on drawn balances (64) (53) 1,129 — 1,012 Loan commitments and financial guarantees (20) (48) (4) — (72) Financial assets at fair value through other comprehensive income (14) — — — (14) Total impairment (98) (101) 1,125 — 926 The impairment charge includes £41 million (2019: £134 million; 2018: £29 million) in respect of residual value impairment and voluntary terminations within the Group’s UK motor finance business. The Group’s impairment charge comprises the following items: Transfers between stages The net impact on the impairment charge of transfers between stages. Other changes in credit quality Changes in loss allowance as a result of movements in risk parameters that reflect changes in customer quality, but which have not resulted in a transfer to a different stage. This also contains the impact on the impairment charge as a result of write-offs and recoveries, where the related loss allowances are reassessed to reflect ultimate realisable or recoverable value. Additions (repayments) Expected loss allowances are recognised on origination of new loans or further drawdowns of existing facilities. Repayments relate to the reduction of loss allowances as a result of repayments of outstanding balances. Methodology and model changes Increase or decrease in impairment charge as a result of adjustments to the models used for expected credit loss calculations; either as changes to the model inputs or to the underlying assumptions, as well as the impact of changing the models used.

TAX EXPENSE

TAX EXPENSE	12 Months Ended
	Dec. 31, 2020
Disclosure of income tax [Abstract]
TAX EXPENSE	12 TAX EXPENSE (a) Analysis of tax credit (expense) for the year 2020 2019 2018 £m £m £m UK corporation tax: Current tax on profit for the year (423) (1,279) (1,108) Adjustments in respect of prior years 336 98 (10) (87) (1,181) (1,118) Foreign tax: Current tax on profit for the year (18) (58) (24) Adjustments in respect of prior years 24 4 — 6 (54) (24) Current tax expense (81) (1,235) (1,142) Deferred tax: Current year 508 (110) (234) Adjustments in respect of prior years (290) 58 (1) Deferred tax credit (expense) 218 (52) (235) Tax credit (expense) 137 (1,287) (1,377) (b) Factors affecting the tax credit (expense) for the year The UK corporation tax rate for the year was 19.0 per cent (2019: 19.0 per cent; 2018: 19.0 per cent). An explanation of the relationship between tax credit (expense) and accounting profit is set out below: 2020 2019 2018 £m £m £m Profit before tax from continuing operations 1,329 4,123 4,280 UK corporation tax thereon (253) (783) (813) Impact of surcharge on banking profits (122) (377) (388) Non-deductible costs: conduct charges (24) (283) (189) Non-deductible costs: bank levy (30) — — Other non-deductible costs (62) (77) (74) Non-taxable income 37 36 25 Tax relief on coupons on other equity instruments 79 53 52 Tax-exempt gains on disposals — 25 11 Tax losses where no deferred tax recognised (3) (7) (9) Remeasurement of deferred tax due to rate changes 435 (25) 18 Differences in overseas tax rates 10 (9) 1 Adjustments in respect of prior years 70 160 (11) Tax credit (expense) on profit from continuing operations 137 (1,287) (1,377) In 2020, the Group submitted claims to HMRC to accelerate tax deductions in respect of certain capitalised software enhancement costs incurred in 2018 and 2019. The Group has recognised a net prior year tax impact of £nil in respect of these claims, being a current tax credit of £215 million in respect of the reduced cash tax liability for those years, a deferred tax charge of £261 million in respect of the future amortisation of those costs, plus a deferred tax credit of £46 million in respect of tax losses carried forward. No other items included in the net prior year tax adjustments credit of £70 million were of individual significance.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	12 Months Ended
	Dec. 31, 2020
Disclosure of discontinued operations [Abstract]
DISCONTINUED OPERATIONS	13 DISCONTINUED OPERATIONS The Group completed the sale of the Scottish Widows Group to its ultimate holding company, Lloyds Banking Group plc, in May 2018. Scottish Widows represented the entirety of the Group’s insurance business and consequently these operations were classified as discontinued and the profit after tax from these activities reported as a single line on the Group’s income statement. In order to fairly reflect the results and financial position of the Group’s continuing operations and its discontinued operations, transactions that the continuing operations had with the discontinued operations were reported on the relevant line in the Group’s income statement, with the matching transaction similarly reported in the discontinued operations income statement. All such transactions fully eliminated within the Group’s statutory consolidation and there was no net impact on profit before tax. The results of the discontinued operations in 2018 were as follows: 2018 £ million Interest and similar income 14 Interest and similar expense (3) Net interest income 11 Fee and commission income 106 Fee and commission expense (180) Net fee and commission income (74) Net trading income (see (a) below) (790) Insurance premium income (see (b) below) 2,714 Other operating income 205 Other income 2,055 Total income 2,066 Insurance claims (see (c) below) (1,363) Total income, net of insurance claims 703 Operating expenses (333) Profit on disposal of the discontinued operations 1,010 Profit before tax 1,380 Taxation (66) Profit after tax from discontinued operations 1,314 (a) Net trading income 2018 £m Foreign exchange translation gains 31 Gains on foreign exchange trading transactions — Total foreign exchange 31 Investment property gains 45 Securities and other gains (see below) (866) Net trading income (790) Securities and other gains comprised net gains arising on assets and liabilities held at fair value through profit or loss and for trading as follows: 2018 £m Net income arising on assets designated at fair value through profit or loss: Debt securities, loans and advances (426) Equity shares (535) Total net gains arising on assets designated at fair value through profit or loss (961) Net gains on financial instruments held for trading 95 Securities and other gains (866) (b) Insurance premium income 2018 £m Life insurance Gross premiums: Life and pensions 2,198 Annuities 366 2,564 Ceded reinsurance premiums (73) Net earned premiums 2,491 Non-life insurance Net earned premiums 223 Total net earned premiums 2,714 (c) Insurance claims 2018 Insurance claims comprise: £m Life insurance and participating investment contracts Claims and surrenders (2,788) Change in insurance and participating investment contracts 1,533 Change in non-participating investment contracts (73) (1,328) Reinsurers’ share 86 (1,242) Change in unallocated surplus 14 Total life insurance and participating investment contracts (1,228) Non-life insurance Total non-life insurance claims, net of reinsurance (135) Total insurance claims (1,363) Life insurance and participating investment contracts gross claims and surrenders can also be analysed as follows: Deaths (267) Maturities (393) Surrenders (1,734) Annuities (336) Other (58) Total life insurance gross claims and surrenders (2,788) The impact of the discontinued operations on the Group’s cash flow statements was as follows: 2018 £m Net cash used in operating activities (1,715) Net cash from investing activities 60 Net cash used in financing activities (682) Change in cash and cash equivalents (2,337)

FINANCIAL ASSETS AT FAIR VALUE

FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS	12 Months Ended
	Dec. 31, 2020
Financial assets at fair value through profit or loss
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS [Line Items]
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS	14 FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS The Group The Bank 2020 2019 2020 2019 £m £m £m £m Trading assets — 290 — 290 Other financial assets mandatorily at fair value through profit or loss 1,674 1,994 1,724 413 Total 1,674 2,284 1,724 703 These assets are comprised as follows: The Group The Bank 2020 2019 2020 2019 Trading Other Trading Other Trading Other Trading Other £m £m £m £m £m £m £m £m Loans and advances to customers — 1,511 — 1,782 — 517 — 362 Debt securities: Government securities — — 290 — — — 290 — Corporate and other debt securities — — — 47 — 1,203 — 47 — — 290 47 — 1,203 290 47 Equity shares — 163 — 165 — 4 — 4 Total — 1,674 290 1,994 — 1,724 290 413 At 31 December 2020 £1,099 million (2019: £1,943 million) of trading and other financial assets at fair value through profit or loss of the Group and £1,600 million (2019: £665 million) of the Bank had a contractual residual maturity of greater than one year. For amounts included above which are subject to repurchase and reverse repurchase agreements see note 45.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2020
Disclosure of derivative financial instruments [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	15 DERIVATIVE FINANCIAL INSTRUMENTS The fair values and notional amounts of derivative instruments are set out in the following table: 2020 2019 Contract/ Fair value Fair value Contract/ Fair value Fair value The Group £m £m £m £m £m £m Trading and other Exchange rate contracts: Spot, forwards and futures 15,055 360 124 11,066 272 142 Currency swaps 147,303 1,314 1,650 156,224 1,184 2,492 Options purchased 12 — — 681 9 — Options written 12 — — 681 — 9 162,382 1,674 1,774 168,652 1,465 2,643 Interest rate contracts: Interest rate swaps 1,312,974 5,872 5,421 1,822,407 5,779 5,685 Forward rate agreements 81,305 — 3 30,192 1 2 Options purchased 3,745 55 — 4,124 77 — Options written 3,064 — 62 3,682 — 78 1,401,088 5,927 5,486 1,860,405 5,857 5,765 Credit derivatives 5,362 65 120 7,546 39 99 Equity and other contracts 50 1 258 338 16 295 Total derivative assets/liabilities - trading and other 1,568,882 7,667 7,638 2,036,941 7,377 8,802 Hedging Derivatives designated as fair value hedges: Currency swaps 36 11 — 34 8 — Interest rate swaps 185,958 336 255 160,942 696 229 185,994 347 255 160,976 704 229 Derivatives designated as cash flow hedges: Interest rate swaps 316,776 290 262 417,718 343 736 Currency swaps 4,030 37 73 7,593 70 64 320,806 327 335 425,311 413 800 Total derivative assets/liabilities - hedging 506,800 674 590 586,287 1,117 1,029 Total recognised derivative assets/liabilities 2,075,682 8,341 8,228 2,623,228 8,494 9,831 The notional amount of the contract does not represent the Group’s exposure to credit risk which is limited to the current cost of replacing contracts with a positive value to the Group should the counterparty default. To reduce credit risk the Group uses a variety of credit enhancement techniques such as netting and collateralisation, where security is provided against the exposure; a large proportion of the Group's derivatives are held through exchanges such as London Clearing House and are collateralised through those exchanges. Further details are provided in note 45 Credit risk. The Group holds derivatives as part of the following strategies: – Customer driven, where derivatives are held as part of the provision of risk management products to Group customers; – To manage and hedge the Group’s interest rate and foreign exchange risk arising from normal banking business. The hedge accounting strategy adopted by the Group is to utilise a combination of fair value and cash flow hedge approaches as described in note 45. The principal derivatives used by the Group are as follows: – Interest rate related contracts include interest rate swaps, forward rate agreements and options. An interest rate swap is an agreement between two parties to exchange fixed and floating interest payments, based upon interest rates defined in the contract, without the exchange of the underlying principal amounts. Forward rate agreements are contracts for the payment of the difference between a specified rate of interest and a reference rate, applied to a notional principal amount at a specific date in the future. An interest rate option gives the buyer, on payment of a premium, the right, but not the obligation, to fix the rate of interest on a future loan or deposit, for a specified period and commencing on a specified future date. – Exchange rate related contracts include forward foreign exchange contracts, currency swaps and options. A forward foreign exchange contract is an agreement to buy or sell a specified amount of foreign currency on a specified future date at an agreed rate. Currency swaps generally involve the exchange of interest payment obligations denominated in different currencies; the exchange of principal can be notional or actual. A currency option gives the buyer, on payment of a premium, the right, but not the obligation, to sell specified amounts of currency at agreed rates of exchange on or before a specified future date. – Credit derivatives, principally credit default swaps, are used by the Group as part of its trading activity and to manage its own exposure to credit risk. A credit default swap is a swap in which one counterparty receives a premium at pre-set intervals in consideration for guaranteeing to make a specific payment should a negative credit event take place. – Equity derivatives are also used by the Group as part of its equity-based retail product activity to eliminate the Group’s exposure to fluctuations in various international stock exchange indices. Index-linked equity options are purchased which give the Group the right, but not the obligation, to buy or sell a specified amount of equities, or basket of equities, in the form of published indices on or before a specified future date. Details of the Group’s hedging instruments are set out below: Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Group - At 31 December 2020 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 36 36 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 6,032 6,031 37,531 116,487 19,877 185,958 Average fixed interest rate 2.01% 1.69% 1.49% 1.23% 2.07% Cash flow hedges Foreign exchange Currency swap Notional 28 102 408 941 2,551 4,030 Average USD/GBP exchange rate 1.30 1.31 1.30 1.32 1.32 Interest rate Interest rate swap Notional 5,026 11,449 41,348 164,893 94,060 316,776 Average fixed interest rate 1.09% 1.05% 1.18% 1.57% 2.36% Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Group - At 31 December 2019 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 34 34 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 331 9,305 37,948 91,535 21,823 160,942 Average fixed interest rate 2.58% 1.74% 1.22% 1.78% 2.72% Cash flow hedges Foreign exchange Currency swap Notional — 364 390 1,766 5,073 7,593 Average EUR/GBP exchange rate — — 1.21 1.10 — Average USD/GBP exchange rate — 1.33 1.36 1.30 1.30 Interest rate Interest rate swap Notional 9,395 23,424 57,950 205,603 121,346 417,718 Average fixed interest rate 1.06% 1.23% 1.29% 1.48% 2.43% The carrying amounts of the Group’s hedging instruments are as follows: Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Group - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Currency swaps 36 11 — 1 Interest rate swaps 185,958 336 255 (88) Cash flow hedges Foreign exchange Currency swaps 4,030 37 73 (64) Interest rate Interest rate swaps 316,776 290 262 527 Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Group - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Currency swaps 34 8 — 2 Interest rate swaps 160,942 696 229 351 Cash flow hedges Foreign exchange Currency swaps 7,593 70 64 (141) Interest rate Interest rate swaps 417,718 343 736 920 All amounts are held within Derivative financial instruments. The Group’s hedged items are as follows: Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Group - At 31 December 2020 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 1 125,183 — 661 — 355 Fixed rate issuance 2 — 37,323 — 1,357 (179) Fixed rate borrowings 3 — 1,404 — 304 (184) Fixed rate bonds 4 24,111 — 1,178 — 641 Cash flow hedges Foreign exchange Foreign currency issuance 2 (8) (40) 64 Customer deposits 5 74 13 (41) Interest rate Customer loans 1 (508) 1,918 (2) Central bank balances 6 (71) 19 270 Customer deposits 5 38 (233) 97 Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Group - At 31 December 2019 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 1 83,818 — 154 — (73) Fixed rate issuance 2 — 47,689 — 1,590 (326) Fixed rate borrowings 3 — 1,272 — 136 (206) Fixed rate bonds 4 21,354 — 660 — 405 Cash flow hedges Foreign exchange Foreign currency issuance 2 28 (20) 90 Customer deposits 5 116 18 (48) Interest rate Customer loans 1 (657) 1,226 531 Central bank balances 6 (220) 85 163 Customer deposits 5 (1) (40) 6 1 Included within loans and advances to customers. 2 Included within debt securities in issue. 3 Included within amounts due to fellow Lloyds Banking Group undertakings. 4 Included within financial assets at fair value through other comprehensive income. 5 Included within customer deposits. 6 Included within cash and balances at central banks. The accumulated amount of fair value hedge adjustments remaining in the balance sheet for hedged items that have ceased to be adjusted for hedging gains and losses is a liability of £360 million (fixed rate issuance liability of £360 million, fixed rate bonds and mortgages £nil) (2019: liability of £315 million (fixed rate issuance liability of £344 million, fixed rate bonds asset of £29 million and fixed rate mortgages of £nil)). Gains and losses arising from hedge accounting are summarised as follows: Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Group - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 571 Fixed rate issuance (35) Fixed rate borrowings 1 Fixed rate bonds 9 Cash flow hedges Foreign exchange Foreign currency issuance (45) — (6) (47) Interest expense Customer deposits 3 — — 9 Interest expense Interest rate Customer loans 23 262 — (633) Interest income Central bank balances 28 (3) — (95) Interest income Customer deposits (27) — — 45 Interest expense Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Group - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 186 Fixed rate issuance (28) Fixed rate borrowings 6 Fixed rate bonds (11) Cash flow hedges Foreign exchange Foreign currency issuance (202) — (101) (73) Interest expense Customer deposits (22) — — 6 Interest expense Interest rate Customer loans 616 99 — (367) Interest income Central bank balances 194 32 — (52) Interest income Customer deposits — — — 7 Interest expense 1 Hedge ineffectiveness is included in the income statement within net trading income. There was a gain of £6 million (2019: gain of £101 million) reclassified from the cash flow hedging reserve for which hedge accounting had previously been used but for which the hedged future cash flows are no longer expected to occur. At 31 December 2020 £7,393 million of total recognised derivative assets of the Group and £7,064 million of total recognised derivative liabilities of the Group (2019: £7,569 million of assets and £9,213 million of liabilities) had a contractual residual maturity of greater than one year. 2020 2019 Contract/ Fair value Fair value Contract/ Fair value Fair value The Bank £m £m £m £m £m £m Trading and other Exchange rate contracts: Spot, forwards and futures 14,117 268 83 8,564 154 123 Currency swaps 168,605 1,683 1,960 183,675 1,401 2,748 Options purchased 12 — — 682 9 — Options written 11 — — 682 — 9 182,745 1,951 2,043 193,603 1,564 2,880 Interest rate contracts: Interest rate swaps 1,762,919 10,287 8,562 2,370,877 11,714 10,776 Forward rate agreements 84,245 — 4 30,192 1 2 Options purchased 3,824 56 — 4,176 78 — Options written 3,025 — 75 3,697 — 89 1,854,013 10,343 8,641 2,408,942 11,793 10,867 Credit derivatives 5,407 59 99 4,618 59 182 Equity and other contracts 3 — — 368 15 15 Total derivative assets/liabilities - trading and other 2,042,168 12,353 10,783 2,607,531 13,431 13,944 Hedging Derivatives designated as fair value hedges: Currency swaps 36 11 — 34 8 — Interest rate swaps 58,030 217 221 66,833 153 213 58,066 228 221 66,867 161 213 Derivatives designated as cash flow hedges: Interest rate swaps 93,353 11 42 130,477 9 35 Currency swaps 616 3 26 1,101 37 19 93,969 14 68 131,578 46 54 Total derivative assets/liabilities - hedging 152,035 242 289 198,445 207 267 Total recognised derivative assets/liabilities 2,194,203 12,595 11,072 2,805,976 13,638 14,211 Details of the Bank’s hedging instruments are set out below: Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Bank - At 31 December 2020 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 36 36 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 2,421 489 3,386 31,239 20,495 58,030 Average fixed interest rate 1.94% 1.67% 2.13% 1.82% 1.89% Cash flow hedges Foreign exchange Currency swap Notional 25 130 296 165 — 616 Average EUR/GBP exchange rate — — 1.13 1.11 — Average USD/GBP exchange rate 1.30 1.30 1.31 1.34 — Interest rate Interest rate swap Notional 844 4,363 9,375 67,534 11,237 93,353 Average fixed interest rate 1.40% 1.07% 1.00% 1.47% 2.33% Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Bank - At 31 December 2019 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 34 34 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 331 1,445 8,378 34,930 21,749 66,833 Average fixed interest rate 2.58% 2.39% 1.49% 1.82% 2.24% Cash flow hedges Foreign exchange Currency swap Notional 53 210 539 299 — 1,101 Average EUR/GBP exchange rate — — 1.15 1.11 — Average USD/GBP exchange rate 1.37 1.38 1.36 1.36 — Interest rate Interest rate swap Notional 3,473 6,771 22,444 66,892 30,897 130,477 Average fixed interest rate 1.10% 1.58% 1.57% 1.41% 1.93% The carrying amounts of the Bank’s hedging instruments are as follows: Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Bank - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Currency swaps 36 11 — 1 Interest rate swaps 58,030 217 221 (226) Cash flow hedges Foreign exchange Currency swaps 616 3 26 4 Interest rate Interest rate swaps 93,353 11 42 130 Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Bank - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Currency swaps 34 8 — 2 Interest rate swaps 66,833 153 213 118 Cash flow hedges Foreign exchange Currency swaps 1,101 37 19 (31) Interest rate Interest rate swaps 130,477 9 35 777 All amounts are held within Derivative financial instruments. The Bank’s hedged items are as follows: Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Bank - At 31 December 2020 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate issuance 1 — 32,044 — 793 (243) Fixed rate borrowings 2 — 1,404 — 304 (184) Fixed rate bonds 3 23,239 — 1,158 — 625 Cash flow hedges Foreign exchange Foreign currency issuance 1 (4) (49) 16 Interest rate Customer loans 4 (119) 1,486 281 Central bank balances5 — — 324 Customer deposits 6 15 (189) 3 Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Bank - At 31 December 2019 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate issuance 1 — 40,557 — 565 (357) Fixed rate borrowings 2 — 1,272 — 136 (206) Fixed rate bonds 3 20,632 — 655 — 400 Cash flow hedges Foreign exchange Foreign currency issuance 1 31 (38) 7 Interest rate Customer loans 4 (344) 1,037 881 Central bank balances 5 (388) — 441 Customer deposits 6 (1) (126) (58) 1 Included within debt securities in issue. 2 Included within amounts due to fellow Lloyds Banking Group undertakings. 3 Included within financial assets at fair value through other comprehensive income. 4 Included within loans and advances to customers. 5 Included within cash and balances at central banks. 6 Included within customer deposits. The accumulated amount of fair value hedge adjustments remaining in the balance sheet for hedged items that have ceased to be adjusted for hedging gains and losses is an asset of £9 million (fixed rate issuance asset of £9 million, fixed rate bonds and mortgages £nil) (2019: asset of £54 million (fixed rate issuance asset of £25 million, fixed rate bonds asset of £29 million and fixed rate mortgages of £nil)). Gains and losses arising from hedge accounting are summarised as follows: Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Bank - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages — Fixed rate issuance (35) Fixed rate bonds 8 Fixed rate borrowings — Cash flow hedges Foreign exchange Foreign currency issuance (1) — (1) (4) Interest expense Interest rate Customer loans (166) (31) — (324) Interest income Central bank balances (111) — — (60) Interest income Customer deposits 8 4 — 34 Interest expense Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Bank - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages (15) Fixed rate issuance (38) Fixed rate bonds 4 Fixed rate borrowings 6 Cash flow hedges Foreign exchange Foreign currency issuance (67) — (25) (11) Interest expense Interest rate Customer loans 125 27 — (363) Interest income Central bank balances 361 35 — (84) Interest income Customer deposits 25 — — 35 Interest expense 1 Hedge ineffectiveness is included in the income statement within net trading income. There was a gain of £1 million (2019: gain of £25 million) reclassified from the cash flow hedging reserve for which hedge accounting had previously been used but for which the hedged future cash flows are no longer expected to occur. At 31 December 2020 £11,755 million of total recognised derivative assets of the Bank and £10,009 million of total recognised derivative liabilities of the Bank (2019: £4,256 million of assets and £5,101 million of liabilities) had a contractual residual maturity of greater than one year.

FINANCIAL ASSETS AT AMORTISED C

FINANCIAL ASSETS AT AMORTISED COST	12 Months Ended
	Dec. 31, 2020
Disclosure Of Financial Assets At Amortised Cost Explanatory [Abstract]
FINANCIAL ASSETS AT AMORTISED COST	16 FINANCIAL ASSETS AT AMORTISED COST Year ended 31 December 2020 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2020 4,852 — — — 4,852 — — — — — Exchange and other adjustments (25) — — — (25) — — — — — Additions (repayments) 1,127 — — — 1,127 — — — — — Charge to the income statement 4 — — — 4 At 31 December 2020 5,954 — — — 5,954 4 — — — 4 Allowance for impairment losses (4) — — — (4) Net carrying amount 5,950 — — — 5,950 Loans and advances to customers At 1 January 2020 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 Exchange and other adjustments 1 1,013 24 (198) (8) 831 — 2 43 21 66 Transfers to Stage 1 4,970 (4,954) (16) — 144 (141) (3) — Transfers to Stage 2 (28,516) 29,128 (612) — (217) 267 (50) — Transfers to Stage 3 (1,615) (2,001) 3,616 — (9) (156) 165 — Impact of transfers between stages (25,161) 22,173 2,988 — (84) 880 570 1,366 (166) 850 682 1,366 Other changes in credit quality 838 (33) 1,183 167 2,155 Additions (repayments) 9,989 578 (754) (1,156) 8,657 37 143 (38) (30) 112 Methodology and model changes (31) 170 26 — 165 Charge to the income statement 678 1,130 1,853 137 3,798 Advances written off (1,490) (39) (1,529) (1,490) (39) (1,529) Recoveries of advances written off in previous years 250 — 250 250 — 250 Discount unwind (47) — (47) At 31 December 2020 415,608 51,280 6,443 12,511 485,842 1,347 2,125 1,968 261 5,701 Allowance for impairment losses (1,347) (2,125) (1,968) (261) (5,701) Net carrying amount 414,261 49,155 4,475 12,250 480,141 Debt securities At 1 January 2020 5,325 — 1 — 5,326 — — 1 — 1 Exchange and other adjustments (17) — — — (17) — — — — — Additions (repayments) (171) — — — (171) — — — — — At 31 December 2020 5,137 — 1 — 5,138 — — 1 — 1 Allowance for impairment losses — — (1) — (1) Net carrying amount 5,137 — — — 5,137 Due from fellow Lloyds Banking Group undertakings 738 — — — 738 Allowance for impairment losses — — — — — Net carrying amount 738 — — — 738 Total financial assets at amortised cost 426,086 49,155 4,475 12,250 491,966 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments, in respect of purchased or originated credit-impaired financial assets. During the year, the economic outlook deteriorated markedly as a consequence of the COVID-19 pandemic. The Group's economic assumptions are outlined in note 3 and these have resulted in a significant increase in the expected credit loss (ECL) allowance. The total allowance for impairment losses includes £192 million (2019: £201 million) in respect of residual value impairment and voluntary terminations within the Group’s UK motor finance business. Movements in UK retail mortgage balances were as follows: Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m UK retail mortgages At 1 January 2020 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Exchange and other adjustments 1 — — — (8) (8) — — — 21 21 Transfers to Stage 1 2,418 (2,414) (4) — 17 (17) — — Transfers to Stage 2 (16,463) 16,882 (419) — (4) 22 (18) — Transfers to Stage 3 (199) (974) 1,173 — — (35) 35 — Impact of transfers between stages (14,244) 13,494 750 — (15) 198 66 249 (2) 168 83 249 Other changes in credit quality 63 (26) (23) 167 181 Additions (repayments) 8,619 (1,411) (375) (1,156) 5,677 14 (15) (13) (30) (44) Methodology and model changes 6 60 24 — 90 Charge to the income statement 81 187 71 137 476 Advances written off (37) (39) (76) (37) (39) (76) Recoveries of advances written 15 — 15 15 — 15 Discount unwind 20 — 20 At 31 December 2020 251,418 29,018 1,859 12,511 294,806 104 468 191 261 1,024 Allowance for impairment losses (104) (468) (191) (261) (1,024) Net carrying amount 251,314 28,550 1,668 12,250 293,782 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments in respect of purchased or originated credit-impaired financial assets. Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m Undrawn balances At 1 January 2020 91 77 5 — 173 Exchange and other adjustments — — — — — Transfers to Stage 1 19 (19) — — Transfers to Stage 2 (10) 10 — — Transfers to Stage 3 (1) (6) 7 — Impact of transfers between stages (10) 90 10 90 (2) 75 17 90 Other items charged to the income statement 102 69 (8) — 163 Charge to the income statement 100 144 9 — 253 At 31 December 2020 191 221 14 — 426 The Group's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m In respect of: Loans and advances to banks 4 — — — 4 Loans and advances to customers 1,347 2,125 1,968 261 5,701 Debt securities — — 1 — 1 Due from fellow Lloyds Banking Group undertakings — — — — — Financial assets at amortised cost 1,351 2,125 1,969 261 5,706 Provisions in relation to loan commitments and financial guarantees 191 221 14 — 426 Total 1,542 2,346 1,983 261 6,132 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — — Year ended 31 December 2019 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2019 3,691 2 — — 3,693 1 — — — 1 Exchange and other adjustments (125) — — — (125) (1) — — — (1) Additions (repayments) 1,286 (2) — — 1,284 — — — — — At 31 December 2019 4,852 — — — 4,852 — — — — — Allowance for impairment losses — — — — — Net carrying amount 4,852 — — — 4,852 Loans and advances to customers At 1 January 2019 420,968 25,308 5,397 15,391 467,064 518 992 1,432 78 3,020 Exchange and other adjustments 1 (312) (44) 26 283 (47) 10 (9) 28 283 312 Acquisition of portfolios 3,694 — — — 3,694 Transfers to Stage 1 6,318 (6,286) (32) — 229 (222) (7) — Transfers to Stage 2 (13,052) 13,484 (432) — (53) 92 (39) — Transfers to Stage 3 (1,539) (1,437) 2,976 — (15) (140) 155 — Impact of transfers between stages (8,273) 5,761 2,512 — (175) 353 420 598 (14) 83 529 598 Other changes in credit quality 31 2 905 (106) 832 Additions (repayments) 13,690 (2,520) (857) (1,934) 8,379 91 (48) (60) (87) (104) Methodology and model changes 33 (27) 8 — 14 Charge to the income statement 141 10 1,382 (193) 1,340 Advances written off (1,827) (54) (1,881) (1,827) (54) (1,881) Recoveries of advances written 396 28 424 396 28 424 Discount unwind (52) — (52) At 31 December 2019 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 Allowance for impairment losses (669) (993) (1,359) (142) (3,163) Net carrying amount 429,098 27,512 4,288 13,572 474,470 Debt securities At 1 January 2019 5,095 — 2 — 5,097 — — 2 — 2 Exchange and other adjustments (90) — (1) — (91) — — (1) — (1) Additions (repayments) 320 — — — 320 — — — — — At 31 December 2019 5,325 — 1 — 5,326 — — 1 — 1 Allowance for impairment losses — — (1) — (1) Net carrying amount 5,325 — — — 5,325 Due from fellow Lloyds Banking Group undertakings 1,854 — 43 — 1,897 Allowance for impairment losses — — (43) — (43) Net carrying amount 1,854 — — — 1,854 Total financial assets at amortised cost 441,129 27,512 4,288 13,572 486,501 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments, in respect of purchased or originated credit-impaired financial assets. Movements in UK retail mortgage balances were as follows: Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m UK retail mortgages At 1 January 2019 257,797 13,654 1,393 15,391 288,235 37 226 118 78 459 Exchange and other adjustments 1 (1) — 2 283 284 — — — 283 283 Acquisition of portfolios 3,694 — — — 3,694 Transfers to Stage 1 3,060 (3,057) (3) — 17 (17) — — Transfers to Stage 2 (7,879) 8,242 (363) — (13) 33 (20) — Transfers to Stage 3 (427) (472) 899 — (5) (21) 26 — Impact of transfers between stages (5,246) 4,713 533 — (15) 104 39 128 (16) 99 45 128 Other changes in credit quality 6 10 (33) (106) (123) Additions (repayments) 799 (1,432) (416) (1,934) (2,983) (4) (20) (16) (87) (127) Methodology and model changes — (34) (10) — (44) Charge to the income statement (14) 55 (14) (193) (166) Advances written off (35) (54) (89) (35) (54) (89) Recoveries of advances written 29 28 57 29 28 57 Discount unwind 24 — 24 At 31 December 2019 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Allowance for impairment losses (23) (281) (122) (142) (568) Net carrying amount 257,020 16,654 1,384 13,572 288,630 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments in respect of purchased or originated credit-impaired financial assets. Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m Undrawn balances At 1 January 2019 121 63 6 — 190 Exchange and other adjustments (1) 1 — — — Transfers to Stage 1 19 (19) — — Transfers to Stage 2 (4) 4 — — Transfers to Stage 3 (1) (3) 4 — Impact of transfers between stages (17) 24 (1) 6 (3) 6 3 6 Other items charged to the income statement (26) 7 (4) — (23) Charge to the income statement (29) 13 (1) — (17) At 31 December 2019 91 77 5 — 173 The Group's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m In respect of: Loans and advances to banks — — — — — Loans and advances to customers 669 993 1,359 142 3,163 Debt securities — — 1 — 1 Due from fellow Lloyds Banking Group undertakings — — 43 — 43 Financial assets at amortised cost 669 993 1,403 142 3,207 Provisions in relation to loan commitments and financial guarantees 91 77 5 — 173 Total 760 1,070 1,408 142 3,380 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — — Year ended 31 December 2020 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2020 4,453 — — 4,453 — — — — Exchange and other adjustments (19) — — (19) — — — — Additions (repayments) 1,226 — — 1,226 — — — — Charge to the income statement 4 — — 4 At 31 December 2020 5,660 — — 5,660 4 — — 4 Allowance for impairment losses (4) — — (4) Net carrying amount 5,656 — — 5,656 Loans and advances to customers At 1 January 2020 165,676 10,681 2,385 178,742 238 435 500 1,173 Exchange and other adjustments 40 (1) (220) (181) — — 23 23 Transfers to Stage 1 1,974 (1,967) (7) — 73 (72) (1) — Transfers to Stage 2 (11,777) 12,089 (312) — (49) 66 (17) — Transfers to Stage 3 (955) (900) 1,855 — (10) (59) 69 — Impact of transfers between stages (10,758) 9,222 1,536 — (49) 340 311 602 (35) 275 362 602 Other changes in credit quality 382 (43) 479 818 Additions (repayments) 1,231 1,592 (212) 2,611 35 137 (19) 153 Methodology and model changes (31) 170 26 165 Charge to the income statement 351 539 848 1,738 Advances written off (708) (708) (708) (708) Recoveries of advances written off in previous 86 86 86 86 Discount unwind (31) (31) At 31 December 2020 156,189 21,494 2,867 180,550 589 974 718 2,281 Allowance for impairment losses (589) (974) (718) (2,281) Net carrying amount 155,600 20,520 2,149 178,269 Debt securities At 1 January 2020 5,241 — — 5,241 — — — — Exchange and other adjustments (16) — — (16) — — — — Additions (repayments) (909) — — (909) 1 — — 1 At 31 December 2020 4,316 — — 4,316 1 — — 1 Allowance for impairment losses (1) — — (1) Net carrying amount 4,315 — — 4,315 Due from fellow Lloyds Banking Group undertakings 128,791 — 7 128,798 Allowance for impairment losses (20) — (7) (27) Net carrying amount 128,771 — — 128,771 Total financial assets at amortised cost 294,342 20,520 2,149 317,011 Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m Undrawn balances At 1 January 2020 44 42 4 90 Exchange and other adjustments — — — — Transfers to Stage 1 9 (9) — — Transfers to Stage 2 (5) 5 — — Transfers to Stage 3 — (3) 3 — Impact of transfers between stages (5) 58 — 53 (1) 51 3 53 Other items charged to the income statement 59 42 1 102 Charge to the income statement 58 93 4 155 At 31 December 2020 102 135 8 245 The Bank's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m In respect of: Loans and advances to banks 4 — — 4 Loans and advances to customers 589 974 718 2,281 Debt securities 1 — — 1 Due from fellow Lloyds Banking Group undertakings 20 — 7 27 Financial assets at amortised cost 614 974 725 2,313 Provisions in relation to loan commitments and financial guarantees 102 135 8 245 Total 716 1,109 733 2,558 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — Year ended 31 December 2019 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2019 3,154 — — 3,154 1 — — 1 Exchange and other adjustments (105) — — (105) (1) (1) Additions (repayments) 1,404 — — 1,404 — — — — At 31 December 2019 4,453 — — 4,453 — — — — Allowance for impairment losses — — — — Net carrying amount 4,453 — — 4,453 Loans and advances to customers At 1 January 2019 160,379 11,006 2,464 173,849 209 502 823 1,534 Exchange and other adjustments (325) (14) — (339) 1 — (33) (32) Transfers to Stage 1 2,805 (2,782) (23) — 113 (109) (4) — Transfers to Stage 2 (4,236) 4,455 (219) — (17) 33 (16) — Transfers to Stage 3 (649) (560) 1,209 — (7) (68) 75 — Impact of transfers between stages (2,080) 1,113 967 — (96) 127 227 258 (7) (17) 282 258 Other changes in credit quality (11) 18 226 233 Additions (repayments) 7,702 (1,424) (287) 5,991 13 (41) (15) (43) Methodology and model changes 33 (27) 8 14 Charge to the income statement 28 (67) 501 462 Advances written off (911) (911) (911) (911) Recoveries of advances written off in previous 152 152 152 152 Discount unwind (32) (32) At 31 December 2019 165,676 10,681 2,385 178,742 238 435 500 1,173 Allowance for impairment losses (238) (435) (500) (1,173) Net carrying amount 165,438 10,246 1,885 177,569 Debt securities At 1 January 2019 4,960 — — 4,960 — — — — Exchange and other adjustments (91) — — (91) — — — — Additions (repayments) 372 — — 372 — — — — At 31 December 2019 5,241 — — 5,241 — — — — Allowance for impairment losses — — — — Net carrying amount 5,241 — — 5,241 Due from fellow Lloyds Banking Group 202,295 — 55 202,350 Allowance for impairment losses (18) — (55) (73) Net carrying amount 202,277 — — 202,277 Total financial assets at amortised cost 377,409 10,246 1,885 389,540 Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m Undrawn balances At 1 January 2019 41 32 3 76 Exchange and other adjustments — — — — Transfers to Stage 1 8 (8) — — Transfers to Stage 2 (2) 2 — — Transfers to Stage 3 — (2) 2 — Impact of transfers between stages (7) 15 (1) 7 (1) 7 1 7 Other items charged to the income statement 4 3 — 7 Charge to the income statement 3 10 1 14 At 31 December 2019 44 42 4 90 The Bank's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m In respect of: Loans and advances to banks — — — — Loans and advances to customers 238 435 500 1,173 Debt securities — — — — Due from fellow Lloyds Banking Group undertakings 18 — 55 73 Financial assets at amortised cost 256 435 555 1,246 Provisions in relation to loan commitments and financial guarantees 44 42 4 90 Total 300 477 559 1,336 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — The movement tables are compiled by comparing the position at 31 December to that at the beginning of the year. Transfers between stages are deemed to have taken place at the start of the reporting period, with all other movements shown in the stage in which the asset is held at 31 December, with the exception of those held within purchased or originated credit-impaired, which are not transferrable. Additions (repayments) comprise new loans originated and repayments of outstanding balances throughout the reporting period. Loans which are written off in the period are first transferred to Stage 3 before acquiring a full allowance and subsequent write-off. At 31 December 2020 £385,517 million (2019: £378,457 million) of loans and advances to customers of the Group and £105,738 million (2019: £103,042 million) of the Bank had a contractual residual maturity of greater than one year. At 31 December 2020 £1,082 million (2019: £1,498 million) of loans and advances to banks of the Group and £1,024 million (2019: £1,231 million) of the Bank had a contractual residual maturity of greater than one year. At 31 December 2020 £5,110 million (2019: £5,314 million) of debt securities of the Group and £4,300 million (2019: £5,241 million) of the Bank had a contractual residual maturity of greater than one year. For amounts included above which are subject to reverse repurchase agreements see note 45.

FINANCE LEASE RECEIVABLES

FINANCE LEASE RECEIVABLES	12 Months Ended
	Dec. 31, 2020
Disclosure of maturity analysis of finance lease payments receivable [text block] [Abstract]
FINANCE LEASE RECEIVABLES	17 FINANCE LEASE RECEIVABLES The Group’s finance lease receivables are classified as loans and advances to customers and accounted for at amortised cost. The balance is analysed as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Gross investment in finance leases, receivable: Not later than 1 year 308 484 18 70 Later than 1 year and not later than 2 years 180 340 2 6 Later than 2 years and not later than 3 years 143 174 2 6 Later than 3 years and not later than 4 years 191 138 7 6 Later than 4 years and not later than 5 years 110 201 2 5 Later than 5 years 571 695 — — 1,503 2,032 31 93 Unearned future finance income on finance leases (440) (478) — — Rentals received in advance (16) (18) (1) — Net investment in finance leases 1,047 1,536 30 93 The net investment in finance leases represents amounts recoverable as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Not later than 1 year 237 404 17 70 Later than 1 year and not later than 2 years 135 322 2 6 Later than 2 years and not later than 3 years 104 126 2 6 Later than 3 years and not later than 4 years 159 98 7 6 Later than 4 years and not later than 5 years 86 166 2 5 Later than 5 years 326 420 — — Net investment in finance leases 1,047 1,536 30 93 Equipment leased to customers under finance leases primarily relates to structured financing transactions to fund the purchase of aircraft, ships and other large individual value items. There was an allowance for uncollectable finance lease receivables included in the allowance for impairment losses for the Group of £22 million (2019: £12 million).

FINANCIAL ASSETS AT FAIR VALU_2

FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME	12 Months Ended
	Dec. 31, 2020
Disclosure Of Fair Value Of Each Investment Designated As Measured At Fair Value Through Other Comprehensive Income Explanatory [Abstract]
FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME	18 FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME The Group The Bank 2020 2019 2020 2019 £m £m £m £m Debt securities: Government securities 14,267 13,082 14,114 12,938 Asset-backed securities 65 60 — — Corporate and other debt securities 12,928 11,036 10,533 8,783 27,260 24,178 24,647 21,721 Treasury and other bills — 439 — 439 Total financial assets at fair value through other comprehensive income 27,260 24,617 24,647 22,160 At 31 December 2020 £25,826 million (2019: £23,385 million) of financial assets at fair value through other comprehensive income of the Group and £23,494 million (2019: £21,052 million) of the Bank had a contractual residual maturity of greater than one year. All assets were assessed at Stage 1 at 31 December 2019 and 2020.

GOODWILL OF THE GROUP

GOODWILL OF THE GROUP	12 Months Ended
	Dec. 31, 2020
The Group
GOODWILL OF THE GROUP [Line Items]
GOODWILL OF THE GROUP	19 GOODWILL OF THE GROUP 2020 2019 £m £m At 1 January 474 474 Impairment charged to the income statement (4) — At 31 December 470 474 Cost 1 814 814 Accumulated impairment losses (344) (340) At 31 December 470 474 1 For acquisitions made prior to 1 January 2004, the date of transition to IFRS, cost is included net of amounts amortised up to 31 December 2003. The goodwill held in the Group’s balance sheet is tested at least annually for impairment. For the purposes of impairment testing the goodwill is allocated to the appropriate cash generating unit; of the total balance of £470 million (2019: £474 million), £302 million, or 64 per cent (2019: £302 million, 64 per cent) has been allocated to Cards and £166 million, or 35 per cent (2019: £170 million, 36 per cent) has been allocated to Motor Finance, both in the Group’s Retail division. The recoverable amount of the goodwill relating to Motor Finance has been based on a value-in-use calculation using pre-tax cash flow projections based on financial budgets and plans approved by management covering a four-year period and a discount rate of 14 per cent. The cash flows beyond the four-year period are extrapolated using a growth rate of 0.5 per cent which does not exceed the long-term average growth rates for the markets in which Motor Finance participates. Management believes that any reasonably possible change in the key assumptions above would not cause the recoverable amount of the goodwill relating to Motor Finance to fall below the balance sheet carrying value. The impairment charge of £4 million related to the goodwill arising on a small, separable acquisition a number of years ago. The recoverable amount of the goodwill relating to the Cards business has been based on a value-in-use calculation using pre-tax cash flow projections based on financial budgets and plans approved by management covering a five-year period and a discount rate of 13 per cent. The cash flows beyond the five year period assume no growth. Management believes that any reasonably possible change in the key assumptions above would not cause the recoverable amount of the goodwill relating to the Cards business to fall below the balance sheet carrying value.

OTHER INTANGIBLE ASSETS

OTHER INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about intangible assets [abstract]
OTHER INTANGIBLE ASSETS	20 OTHER INTANGIBLE ASSETS The Group The Bank Brands Core deposit Purchased Customer- Capitalised Total Capitalised £m £m £m £m £m £m £m Cost: At 1 January 2019 584 2,770 1,002 50 3,907 8,313 3,306 Additions — — — — 1,029 1,029 978 Disposals — — — — (10) (10) (4) At 31 December 2019 584 2,770 1,002 50 4,926 9,332 4,280 Additions — — — — 984 984 857 Disposals — — — — (55) (55) (6) At 31 December 2020 584 2,770 1,002 50 5,855 10,261 5,131 Accumulated amortisation: At 1 January 2019 204 2,770 411 50 1,556 4,991 1,244 Charge for the year (note 9) — — 70 — 492 562 420 Disposals — — — — (2) (2) (2) At 31 December 2019 204 2,770 481 50 2,046 5,551 1,662 Charge for the year (note 9) — — 70 — 583 653 515 Disposals — — — — (55) (55) (6) At 31 December 2020 204 2,770 551 50 2,574 6,149 2,171 Balance sheet amount at 380 — 451 — 3,281 4,112 2,960 Balance sheet amount at 380 — 521 — 2,880 3,781 2,618

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [abstract]
PROPERTY, PLANT AND EQUIPMENT	21 PROPERTY, PLANT AND EQUIPMENT The Group The Bank Investment Premises Equipment Operating Right-of-use asset 1 Total Premises Equipment Right-of-use asset 1 Total £m £m £m £m £m £m £m £m £m £m Cost or valuation: At 1 January 2019 35 1,180 4,966 6,642 1,655 14,478 1,275 6,267 883 8,425 Exchange and other adjustments — 3 4 — — 7 21 — — 21 Additions — 118 518 1,693 183 2,512 62 484 114 660 Expenditure on investment properties (see below) 11 — — — — 11 — — — — Change in fair value of investment properties (note 7) (8) — — — — (8) — — — — Disposals (23) (243) (231) (1,681) (25) (2,203) (271) (210) (16) (497) At 31 December 2019 15 1,058 5,257 6,654 1,813 14,797 1,087 6,541 981 8,609 Exchange and other adjustments — 1 — — — 1 7 — — 7 Additions — 72 314 1,436 122 1,944 42 287 104 433 Expenditure on investment properties (see below) 9 — — — — 9 — — — — Change in fair value of investment properties (note 7) (20) — — — — (20) — — — — Disposals — (184) (501) (1,914) (124) (2,723) (113) (472) (103) (688) At 31 December 2020 4 947 5,070 6,176 1,811 14,008 1,023 6,356 982 8,361 Accumulated depreciation and impairment: At 1 January 2019 — 199 2,270 1,839 — 4,308 687 3,915 — 4,602 Exchange and other adjustments — — (1) (33) 1 (33) 8 — 3 11 Depreciation charge for the year (note 9) — 121 710 1,006 203 2,040 67 648 110 825 Disposals — (225) (176) (584) — (985) (257) (166) — (423) At 31 December 2019 — 95 2,803 2,228 204 5,330 505 4,397 113 5,015 Exchange and other adjustments — (1) 2 — — 1 — 2 — 2 Depreciation charge for the year (note 9) — 124 676 1,002 215 2,017 70 619 121 810 Disposals — (137) (466) (1,012) (42) (1,657) (93) (441) (30) (564) At 31 December 2020 — 81 3,015 2,218 377 5,691 482 4,577 204 5,263 Balance sheet amount at 4 866 2,055 3,958 1,434 8,317 541 1,779 778 3,098 Balance sheet amount at 15 963 2,454 4,426 1,609 9,467 582 2,144 868 3,594 1 Primarily premises. Expenditure on investment properties is comprised as follows: 2020 2019 £m £m Acquisitions of new properties 9 11 Additional expenditure on existing properties — — 9 11 The table above analyses movements in investment properties, all of which are categorised as level 3. See note 42 for details of levels in the fair value hierarchy. At 31 December the future minimum rentals receivable by the Group under non-cancellable operating leases were as follows: 2020 2019 £m £m Receivable within 1 year 864 977 1 to 2 years 548 620 2 to 3 years 274 312 3 to 4 years 78 102 4 to 5 years 7 12 Over 5 years — 2 Total future minimum rentals receivable 1,771 2,025 Equipment leased to customers under operating leases primarily relates to vehicle contract hire arrangements.

INVESTMENT IN SUBSIDIARY UNDERT

INVESTMENT IN SUBSIDIARY UNDERTAKINGS OF THE BANK	12 Months Ended
	Dec. 31, 2020
Disclosure of interests in subsidiaries [Abstract]
INVESTMENT IN SUBSIDIARY UNDERTAKINGS OF THE BANK	22 INVESTMENT IN SUBSIDIARY UNDERTAKINGS OF THE BANK 2020 2019 £m £m At 1 January 34,084 32,656 Additions and capital injections 1,055 1,766 Capital contributions 33 53 Capital repayments (1,801) (212) Disposals (18) (20) Impairment 1 — (159) At 31 December 33,353 34,084 1 During the year ended 31 December 2019 the Bank wrote-down the carrying value of its investments in certain subsidiaries, following a review of their financial position and anticipated future activities. Certain subsidiary companies currently have insufficient distributable reserves to make dividend payments, however, there were no further significant restrictions on any of the Bank’s subsidiaries in paying dividends or repaying loans and advances. All regulated banking subsidiaries are required to maintain capital at levels agreed with the regulators; this may impact those subsidiaries’ ability to make distributions.

OTHER ASSETS

OTHER ASSETS	12 Months Ended
	Dec. 31, 2020
Disclosure of other non-current assets [Abstract]
OTHER ASSETS	23 OTHER ASSETS The Group The Bank 2020 2019 2020 2019 £m £m £m £m Settlement balances 202 490 100 437 Prepayments 1,030 1,229 443 469 Other assets 660 808 211 92 Total other assets 1,892 2,527 754 998

FINANCIAL LIABILITIES AT FAIR V

FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS	12 Months Ended
	Dec. 31, 2020
Disclosure Of Trading And Other Financial Liabilities At Fair Value Through Profit Or Loss [Abstract]
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS	24 FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS The Group The Bank 2020 2019 2020 2019 £m £m £m £m Liabilities designated at fair value through profit or loss: debt securities in issue 6,828 7,531 7,905 7,484 Trading liabilities: Other deposits 2 98 2 140 Short positions in securities 1 73 — 73 3 171 2 213 Total financial liabilities at fair value through profit or loss 6,831 7,702 7,907 7,697 At 31 December 2020, the Group had £6,682 million (2019: £7,376 million) and the Bank had £7,758 million (2019: £7,328 million) of trading and other liabilities at fair value through profit or loss with a contractual residual maturity of greater than one year. Liabilities designated at fair value through profit or loss primarily represent debt securities in issue which either contain substantive embedded derivatives which would otherwise need to be recognised and measured at fair value separately from the related debt securities, or which are accounted for at fair value to significantly reduce an accounting mismatch. For the Group, the amount contractually payable on maturity of the debt securities held at fair value through profit or loss at 31 December 2020 was £11,503 million, which was £4,675 million higher than the balance sheet carrying value (2019: £14,365 million. which was £6,834 million higher than the balance sheet carrying value). At 31 December 2020 there was a cumulative £109 million increase in the fair value of these liabilities attributable to changes in credit spread risk; this is determined by reference to the quoted credit spreads of the Bank. Of the cumulative amount, an increase of £75 million arose in 2020 and an increase of £419 million arose in 2019. In addition, the Bank has £1,122 million (2019: £nil) of debt securities in issue which are accounted for at fair value to significantly reduce an accounting mismatch. The changes in the credit risk of these liabilities are linked to the changes in credit risk on corresponding assets that the Bank holds at fair value through profit or loss, representing debt securities issued by subsidiaries. Given the economic relationship between these assets and liabilities, the Bank presents changes in the credit risk of these liabilities in profit or loss in order to avoid creating or enlarging an accounting mismatch. For the fair value of collateral pledged in respect of repurchase agreements see note 45.

DEBT SECURITIES IN ISSUE

DEBT SECURITIES IN ISSUE	12 Months Ended
	Dec. 31, 2020
Disclosure of debt instruments [Abstract]
DEBT SECURITIES IN ISSUE	25 DEBT SECURITIES IN ISSUE The Group The Bank 2020 2019 2020 2019 £m £m £m £m Medium-term notes issued 21,501 26,628 19,546 25,603 Covered bonds (note 26) 23,977 29,818 20,895 25,359 Certificates of deposit issued 3,597 4,925 3,597 4,925 Securitisation notes (note 26) 4,436 7,329 — — Commercial paper 5,782 7,731 4,071 5,622 Total debt securities in issue 59,293 76,431 48,109 61,509 At 31 December 2020 £40,765 million (2019: £41,762 million) of debt securities in issue of the Group and £33,582 million (2019: £32,152 million) of the Bank had a contractual residual maturity of greater than one year.

SECURITISATIONS AND COVERED BON

SECURITISATIONS AND COVERED BONDS	12 Months Ended
	Dec. 31, 2020
Disclosure Of Securitisations Programmes And Transactions [Abstract]
SECURITISATIONS AND COVERED BONDS	26 SECURITISATIONS AND COVERED BONDS Securitisation programmes The Group’s balance sheet includes loans securitised under the Group’s securitisation programmes, the majority of which have been sold by Group companies to bankruptcy remote structured entities. As the structured entities are funded by the issue of debt on terms whereby the majority of the risks and rewards of the portfolio are retained by the Group company, the structured entities are consolidated fully and all of these loans are retained on the Group’s balance sheet, with the related notes in issue included within debt securities in issue. Covered bond programmes Certain loans and advances to customers have been assigned to bankruptcy remote limited liability partnerships to provide security for issues of covered bonds by the Group. The Group retains all of the risks and rewards associated with these loans and the partnerships are consolidated fully with the loans retained on the Group’s balance sheet, and the related covered bonds in issue included within debt securities in issue. The Group’s principal securitisation and covered bond programmes, together with the balances of the advances subject to these arrangements and the carrying value of the notes in issue at 31 December, are listed below. The notes in issue are reported in note 25. 2020 2019 Loans and Notes in Loans and Notes in £m £m £m £m Securitisation programmes UK residential mortgages 23,984 21,640 25,815 23,505 Commercial loans 2,884 4,004 5,116 6,038 Credit card receivables 5,890 4,340 8,164 5,767 Motor vehicle finance 1,826 1,915 3,450 3,462 34,584 31,899 42,545 38,772 Less held by the Group (27,418) (31,396) Total securitisation programmes (notes 24 and 25) 1 4,481 7,376 Covered bond programmes Residential mortgage-backed 33,980 23,477 37,579 29,318 Social housing loan-backed 980 600 1,552 600 34,960 24,077 39,131 29,918 Less held by the Group (100) (100) Total covered bond programmes (note 25) 23,977 29,818 Total securitisation and covered bond programmes 28,458 37,194 1 Includes £45 million (2019: £47 million) of securitisation notes held at fair value through profit or loss. Cash deposits of £3,930 million (2019: £4,703 million) which support the debt securities issued by the structured entities, the term advances related to covered bonds and other legal obligations are held by the Group. Additionally, the Group has certain contractual arrangements to provide liquidity facilities to some of these structured entities. At 31 December 2020 these obligations had not been triggered; the maximum exposure under these facilities was £52 million (2019: £56 million). The Group has a number of covered bond programmes, for which limited liability partnerships have been established to ring-fence asset pools and guarantee the covered bonds issued by the Group. At the reporting date the Group had over-collateralised these programmes as set out in the table above to meet the terms of the programmes, to secure the rating of the covered bonds and to provide operational flexibility. From time-to-time, the obligations of the Group to provide collateral may increase due to the formal requirements of the programmes. The Group may also voluntarily contribute collateral to support the ratings of the covered bonds. The Group recognises the full liabilities associated with its securitisation and covered bond programmes within debt securities in issue, although the obligations of the Group in respect of its securitisation issuances are limited to the cash flows generated from the underlying assets. The Group could be required to provide additional support to a number of the securitisation programmes to support the credit ratings of the debt securities issued, in the form of increased cash reserves and the holding of subordinated notes. Further, certain programmes contain contractual obligations that require the Group to repurchase assets should they become credit impaired or as otherwise required by the transaction documents. The Group has not provided financial or other support by voluntarily offering to repurchase assets from any of its public securitisation programmes during 2020 (2019: none).

OTHER LIABILITIES

OTHER LIABILITIES	12 Months Ended
	Dec. 31, 2020
Disclosure of other liabilities [text block] [Abstract]
OTHER LIABILITIES	27 OTHER LIABILITIES The Group The Bank 2020 2019 2020 2019 £m £m £m £m Settlement balances 36 274 11 9 Lease liabilities 1,592 1,755 885 975 Other creditors and accruals 3,553 3,571 1,677 1,808 5,181 5,600 2,573 2,792 The maturity of the lease liabilities was as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Not later than 1 year 227 238 125 132 Later than 1 year and not later than 2 years 192 220 102 124 Later than 2 years and not later than 3 years 157 192 80 106 Later than 3 years and not later than 4 years 146 156 74 84 Later than 4 years and not later than 5 years 117 156 57 84 Later than 5 years 753 793 447 445 1,592 1,755 885 975

RETIREMENT BENEFIT OBLIGATIONS

RETIREMENT BENEFIT OBLIGATIONS	12 Months Ended
	Dec. 31, 2020
Disclosure of employee benefits [text block] [Abstract]
RETIREMENT BENEFIT OBLIGATIONS	28 RETIREMENT BENEFIT OBLIGATIONS 2020 2019 2018 £m £m £m Charge to the Group income statement Defined benefit pension schemes 244 241 396 Other post-retirement benefit schemes 3 4 4 Total defined benefit schemes 247 245 400 Defined contribution pension schemes 305 273 288 Total charge to the income statement – continuing operations (note 9) 552 518 688 In addition, in 2018 there was charge of £8 million within discontinued operations (see note 13). The Group The Bank 2020 2019 2020 2019 £m £m £m £m Amounts recognised in the balance sheet Retirement benefit assets 1,714 681 765 386 Retirement benefit obligations (245) (257) (106) (124) Total amounts recognised in the balance sheet 1,469 424 659 262 The total amounts recognised in the balance sheet relate to: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Defined benefit pension schemes 1,578 550 727 347 Other post-retirement benefit schemes (109) (126) (68) (85) Total amounts recognised in the balance sheet 1,469 424 659 262 Pension schemes Defined benefit schemes (i) Characteristics of and risks associated with the Group’s schemes The Group has established a number of defined benefit pension schemes in the UK and overseas. All significant schemes are based in the UK, with the three most significant being the main sections of the Lloyds Bank Pension Scheme No. 1, the Lloyds Bank Pension Scheme No. 2 and the HBOS Final Salary Pension Scheme. At 31 December 2020, these schemes represented 94 per cent of the Group’s total gross defined benefit pension assets (2019: 94 per cent). These schemes provide retirement benefits calculated as a percentage of final pensionable salary depending upon the length of service; the minimum retirement age under the rules of the schemes at 31 December 2020 is generally 55 although certain categories of member are deemed to have a contractual right to retire at 50. The Group operates both funded and unfunded pension arrangements; the majority, including the three most significant schemes, are funded schemes in the UK. All of these UK funded schemes are operated as separate legal entities under trust law, are in compliance with the Pensions Act 2004 and are managed by a Trustee Board (the Trustee) whose role is to ensure that their Scheme is administered in accordance with the Scheme rules and relevant legislation, and to safeguard the assets in the best interests of all members and beneficiaries. The Trustee is solely responsible for setting investment policy and for agreeing funding requirements with the employer through the funding valuation process. The Board of Trustees must be composed of representatives of the Company and plan participants in accordance with the Scheme’s regulations. A valuation to determine the funding status of each scheme is carried out at least every three years, whereby scheme assets are measured at market value and liabilities (technical provisions) are measured using prudent assumptions. If a deficit is identified a recovery plan is agreed between the employer and the scheme Trustee and sent to the Pensions Regulator for review. The Group has not provided for these deficit contributions as the future economic benefits arising from these contributions are expected to be available to the Group. The Group’s overseas defined benefit pension schemes are subject to local regulatory arrangements. Terms have now been agreed in principle with the Trustee in respect of the most recent triennial funding valuations of the Group's three main defined benefit pension schemes. The valuations showed an aggregate ongoing funding deficit of approximately £7.3 billion as at 31 December 2019 (a funding level of 85.7 per cent) compared to a £7.3 billion deficit at 31 December 2016 (a funding level of 85.9 per cent).The revised deficit now includes an allowance for the impact of RPI reform announced by the Chancellor of the Exchequer in November 2020. Under the old recovery plan deficit contributions of approximately £0.8 billion were paid in 2020 and £1.3 billion was committed from 2021 to 2024. Under the new recovery plan, £0.8 billion plus a further 30 per cent of Lloyds Banking Group plc's in-year capital distributions to ordinary shareholders, up to a limit on total deficit contributions of £2.0 billion, per annum, is payable from 2021 until this deficit has been removed. The deficit contributions are in addition to the regular contributions to meet benefits accruing over the year, and to cover the expenses of running the schemes. The Group expects to pay contributions of at least £1.1 billion to its defined benefit schemes in 2021. During 2009, the Group made one-off contributions to the Lloyds Bank Pension Scheme No. 1 and Lloyds Bank Pension Scheme No. 2 in the form of interests in limited liability partnerships for each of the two schemes which hold assets to provide security for the Group’s obligations to the two schemes. At 31 December 2020, the limited liability partnerships held assets of approximately £6.7 billion. The limited liability partnerships are consolidated fully in the Group’s balance sheet. The Group has also established three private limited companies which hold assets to provide security for the Group’s obligations to the HBOS Final Salary Pension Scheme, a section of the Lloyds Bank Pension Scheme No. 1 and the Lloyds Bank Offshore Pension Scheme. At 31 December 2020 these held assets of approximately £4.7 billion in aggregate. The private limited companies are consolidated fully in the Group’s balance sheet. The terms of these arrangements require the Group to maintain assets in these vehicles to agreed minimum values in order to secure obligations owed to the relevant Group pension schemes. The Group has satisfied this requirement during 2020. The last funding valuations of other Group schemes were carried out on a number of different dates. In order to report the position under IAS 19 as at 31 December 2020 the most recent valuation results for all schemes have been updated by qualified independent actuaries. The funding valuations use a more prudent approach to setting the discount rate and more conservative longevity assumptions than the IAS 19 valuations. In July 2018 a decision was sought from the High Court in respect of the requirement to equalise the Guaranteed Minimum Pension (GMP) benefits accrued between 1990 and 1997 from contracting out of the State Earnings Related Pension Scheme. In its judgment handed down on 26 October 2018 the High Court confirmed the requirement to treat men and women equally with respect to these benefits and a range of methods that the Trustee is entitled to adopt to achieve equalisation. The Group recognised a past service cost of £108 million in respect of equalisation in 2018 and, following agreement of the detailed implementation approach with the Trustee, a further £33 million was recognised in 2019. A further hearing was held during 2020 which confirmed the extent of the Trustee's obligation to revisit past transfers out of the Schemes. The amount of any additional liability as a result of this judgment is still being reviewed but is not considered likely to be material. (ii) Amounts in the financial statements The Group The Bank 2020 2019 2020 2019 £m £m £m £m Amount included in the balance sheet Present value of funded obligations (49,549) (45,241) (30,597) (28,072) Fair value of scheme assets 51,127 45,791 31,324 28,419 Net amount recognised in the balance sheet 1,578 550 727 347 The Group The Bank 2020 2019 2020 2019 £m £m £m £m Net amount recognised in the balance sheet At 1 January 550 1,146 347 667 Net defined benefit pension charge (244) (241) (119) (129) Actuarial losses on defined benefit obligation (5,443) (4,958) (3,365) (3,473) Return on plan assets 5,565 3,531 3,217 2,700 Employer contributions 1,149 1,062 647 558 Exchange and other adjustments 1 10 — 24 At 31 December 1,578 550 727 347 The Group The Bank 2020 2019 2020 2019 £m £m £m £m Movements in the defined benefit obligation At 1 January (45,241) (41,092) (28,072) (25,198) Current service cost (206) (201) (97) (98) Interest expense (914) (1,172) (568) (737) Remeasurements: Actuarial gains (losses) – experience 493 (29) 441 35 Actuarial (losses) gains – demographic assumptions (218) 471 (282) 304 Actuarial losses – financial assumptions (5,718) (5,400) (3,524) (3,812) Benefits paid 2,254 2,174 1,504 1,436 Past service cost (5) (44) (2) (33) Settlements 20 17 — — Exchange and other adjustments (14) 35 3 31 At 31 December (49,549) (45,241) (30,597) (28,072) The Group The Bank 2020 2019 2020 2019 £m £m £m £m Analysis of the defined benefit obligation: Active members (6,550) (6,413) (3,415) (3,433) Deferred members (17,647) (16,058) (10,493) (9,679) Pensioners (23,409) (21,032) (15,311) (13,714) Dependants (1,943) (1,738) (1,378) (1,246) At 31 December (49,549) (45,241) (30,597) (28,072) The Group The Bank 2020 2019 2020 2019 £m £m £m £m Changes in the fair value of scheme assets At 1 January 45,791 42,238 28,419 25,865 Return on plan assets excluding amounts included in interest income 5,565 3,531 3,217 2,700 Interest income 937 1,220 581 765 Employer contributions 1,149 1,062 647 558 Benefits paid (2,254) (2,174) (1,504) (1,436) Settlements (22) (18) — — Administrative costs paid (54) (43) (33) (26) Exchange and other adjustments 15 (25) (3) (7) At 31 December 51,127 45,791 31,324 28,419 The expense recognised in the income statement for the year ended 31 December comprises: The Group 2020 2019 2018 £m £m £m Current service cost 206 201 257 Net interest amount (23) (48) (22) Past service credits and curtailments — — 12 Settlements 2 1 1 Past service cost – plan amendments 5 44 108 Plan administration costs incurred during the year 54 43 40 Total defined benefit pension expense 244 241 396 (iii) Composition of scheme assets 2020 2019 Quoted Unquoted Total Quoted Unquoted Total The Group £m £m £m £m £m £m Equity instruments 616 45 661 555 39 594 Debt instruments 1 : Fixed interest government bonds 11,328 — 11,328 8,893 — 8,893 Index-linked government bonds 21,058 — 21,058 18,207 — 18,207 Corporate and other debt securities 12,736 — 12,736 10,588 — 10,588 45,122 — 45,122 37,688 — 37,688 Property — 136 136 — 158 158 Pooled investment vehicles 650 13,022 13,672 4,773 10,585 15,358 Money market instruments, cash, derivatives, and other assets and liabilities 812 (9,276) (8,464) 204 (8,211) (8,007) At 31 December 47,200 3,927 51,127 43,220 2,571 45,791 1 Of the total debt instruments, £39,439 million (2019: £33,134 million) were investment grade (credit ratings equal to or better than ‘BBB’). 2020 2019 Quoted Unquoted Total Quoted Unquoted Total The Bank £m £m £m £m £m £m Equity instruments 423 34 457 385 26 411 Debt instruments 1 : Fixed interest government bonds 4,591 — 4,591 3,198 — 3,198 Index-linked government bonds 12,638 — 12,638 11,254 — 11,254 Corporate and other debt securities 7,878 — 7,878 6,791 — 6,791 25,107 — 25,107 21,243 — 21,243 Pooled investment vehicles 124 8,569 8,693 2,527 7,203 9,730 Money market instruments, derivatives, cash and other assets and liabilities 365 (3,298) (2,933) (145) (2,820) (2,965) At 31 December 26,019 5,305 31,324 24,010 4,409 28,419 1 Of the total debt instruments, £21,938 million (2019: £18,724 million) were investment grade (credit ratings equal to or better than ‘BBB’). The assets of all the funded plans are held independently of the Group’s assets in separate trustee administered funds. The pension schemes’ pooled investment vehicles comprise: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Equity funds 3,169 2,429 2,044 1,706 Hedge and mutual funds 2,181 2,886 1,427 1,818 Alternative credit funds 4,072 4,716 2,620 3,061 Property funds 1,551 1,536 1,100 1,127 Infrastructure funds 1,405 1,648 620 827 Liquidity funds 847 1,126 598 980 Bond and debt funds 396 971 284 211 Other 51 46 — — At 31 December 13,672 15,358 8,693 9,730 The Trustee’s approach to investment is focused on acting in the members’ best financial interests, with the integration of ESG (Environmental, Social and Governance) considerations into investment management processes and practices. This policy is reviewed annually (or more frequently as required) and has been shared with the schemes’ investment managers for implementation. (iv) Assumptions The principal actuarial and financial assumptions used in valuations of the defined benefit pension schemes were as follows: 2020 2019 % % Discount rate 1.44 2.05 Rate of inflation: Retail Price Index (RPI) 2.80 2.94 Consumer Price Index (CPI) 2.41 1.99 Rate of salary increases 0.00 0.00 Weighted-average rate of increase for pensions in payment 2.61 2.57 On 25 November 2020 the Chancellor of the Exchequer announced the outcome of a consultation into a reform of the calculation of RPI. It is now expected that from 2030 RPI will be aligned with CPIH (the Consumer Price Index including owner-occupiers' housing costs). To determine the RPI assumption a term-dependent inflation curve has been used adjusting for an assumed inflation risk premium. In the period to 2030 a gap of 100 basis points has been assumed between RPI and CPI; thereafter no gap has been assumed. 2020 2019 Years Years Life expectancy for member aged 60, on the valuation date: Men 27.0 27.5 Women 29.0 29.2 Life expectancy for member aged 60, 15 years after the valuation date: Men 28.1 28.5 Women 30.2 30.3 The mortality assumptions used in the UK scheme valuations are based on standard tables published by the Institute and Faculty of Actuaries which were adjusted in line with the actual experience of the relevant schemes. The table shows that a member retiring at age 60 at 31 December 2020 is assumed to live for, on average, 27.0 years for a male and 29.0 years for a female. In practice there will be much variation between individual members but these assumptions are expected to be appropriate across all members. It is assumed that younger members will live longer in retirement than those retiring now. This reflects the expectation that mortality rates will continue to fall over time as medical science and standards of living improve. To illustrate the degree of improvement assumed the table also shows the life expectancy for members aged 45 now, when they retire in 15 years’ time at age 60. The Group has considered the impact of COVID-19 and whilst a higher number of deaths have been experienced in 2020, this does not have a material impact on the defined benefit obligation. (v) Amount, timing and uncertainty of future cash flows Risk exposure of the defined benefit schemes Whilst the Group is not exposed to any unusual, entity specific or scheme specific risks in its defined benefit pension schemes, it is exposed to a number of significant risks, detailed below: Inflation rate risk: the majority of the plans’ benefit obligations are linked to inflation both in deferment and once in payment. Higher inflation will lead to higher liabilities although this will be materially offset by holdings of inflation-linked gilts and, in most cases, caps on the level of inflationary increases are in place to protect against extreme inflation. Interest rate risk: The defined benefit obligation is determined using a discount rate derived from yields on AA-rated corporate bonds. A decrease in corporate bond yields will increase plan liabilities although this will be materially offset by an increase in the value of bond holdings and through the use of derivatives. Longevity risk: The majority of the schemes obligations are to provide benefits for the life of the members so increases in life expectancy will result in an increase in the plans’ liabilities. Investment risk: Scheme assets are invested in a diversified portfolio of debt securities, equities and other return-seeking assets. If the assets underperform the discount rate used to calculate the defined benefit obligation, it will reduce the surplus or increase the deficit. Volatility in asset values and the discount rate will lead to volatility in the net pension asset on the Group’s balance sheet and in other comprehensive income. To a lesser extent this will also lead to volatility in the pension expense in the Group’s income statement. The ultimate cost of the defined benefit obligations to the Group will depend upon actual future events rather than the assumptions made. The assumptions made are unlikely to be borne out in practice and as such the cost may be higher or lower than expected. Sensitivity analysis The effect of reasonably possible changes in key assumptions on the value of scheme liabilities and the resulting pension charge in the Group’s income statement and on the net defined benefit pension scheme asset, for the Group’s three most significant schemes, is set out below. The sensitivities provided assume that all other assumptions and the value of the schemes’ assets remain unchanged, and are not intended to represent changes that are at the extremes of possibility. The calculations are approximate in nature and full detailed calculations could lead to a different result. It is unlikely that isolated changes to individual assumptions will be experienced in practice. Due to the correlation of assumptions, aggregating the effects of these isolated changes may not be a reasonable estimate of the actual effect of simultaneous changes in multiple assumptions. The Group The Bank Effect of reasonably possible alternative assumptions Effect of reasonably possible alternative assumptions Increase (decrease) in the (Increase) decrease in the Increase (decrease) in the (Increase) decrease in the 2020 2019 2020 2019 2020 2019 2020 2019 £m £m £m £m £m £m £m £m Inflation (including pension increases) 1 : Increase of 0.1 per cent 11 12 531 467 6 7 337 302 Decrease of 0.1 per cent (11) (12) (522) (460) (6) (7) (332) (296) Discount rate 2 : Increase of 0.1 per cent (20) (20) (866) (763) (12) (11) (534) (471) Decrease of 0.1 per cent 19 21 890 784 11 12 548 484 Expected life expectancy of members: Increase of one year 39 40 2,146 1,636 23 24 1,370 1,038 Decrease of one year (37) (39) (2,052) (1,575) (23) (23) (1,310) (1,000) 1 At 31 December 2020, the assumed rate of RPI inflation is 2.80 per cent and CPI inflation 2.41 per cent (2019: RPI 2.94 per cent and CPI 1.99 per cent). 2 At 31 December 2020, the assumed discount rate is 1.44 per cent (2019: 2.05 per cent). Sensitivity analysis method and assumptions The sensitivity analysis above reflects the impact on the liabilities of the Group’s three most significant schemes which account for over 90 per cent of the Group’s defined benefit obligations. Whilst differences in the underlying liability profiles for the remainder of the Group’s pension arrangements mean they may exhibit slightly different sensitivities to variations in these assumptions, the sensitivities provided above are indicative of the impact across the Group as a whole. The inflation assumption sensitivity applies to both the assumed rate of increase in the Consumer Price Index (CPI) and the Retail Price Index (RPI), and includes the impact on the rate of increases to pensions, both before and after retirement. These pension increases are linked to inflation (either CPI or RPI) subject to certain minimum and maximum limits. The sensitivity analysis (including the inflation sensitivity) does not include the impact of any change in the rate of salary increases as pensionable salaries have been frozen since 2 April 2014. The life expectancy assumption has been applied by allowing for an increase/decrease in life expectation from age 60 of one year, based upon the approximate weighted average age for each scheme. Whilst this is an approximate approach and will not give the same result as a one year increase in life expectancy at every age, it provides an appropriate indication of the potential impact on the schemes from changes in life expectancy. There was no change in the methods and assumptions used in preparing the sensitivity analysis from the prior year. Asset-liability matching strategies The main schemes’ assets are invested in a diversified portfolio, consisting primarily of debt securities. The investment strategy is not static and will evolve to reflect the structure of liabilities within the schemes. Specific asset-liability matching strategies for each pension plan are independently determined by the responsible governance body for each scheme and in consultation with the employer. A significant goal of the asset-liability matching strategies adopted by Group schemes is to reduce volatility caused by changes in market expectations of interest rates and inflation. In the main schemes, this is achieved by investing scheme assets in bonds, primarily fixed interest gilts and index linked gilts, and by entering into interest rate and inflation swap arrangements. These investments are structured to take into account the profile of scheme liabilities and actively managed to reflect both changing market conditions and changes to the liability profile. On 28 January 2020, the main schemes entered into a £10 billion longevity insurance arrangement to hedge around 20 per cent of the schemes’ exposure to unexpected increases in life expectancy. This arrangement forms part of the schemes’ investment portfolio and will provide income to the schemes in the event that pensions are paid out for longer than expected. The transaction is structured as a pass-through with Scottish Widows as the insurer, and onwards reinsurance to Pacific Life Re Limited. The valuation of the swap was nil at inception and whilst there has been a slightly higher than expected number of deaths in the population covered by the arrangement, this has not had a material impact on the value of the swap. At 31 December 2020 the asset-liability matching strategy mitigated around 105 per cent of the liability sensitivity to interest rate movements and around 100 per cent of the liability sensitivity to inflation movements. In addition a small amount of interest rate sensitivity arises through holdings of corporate and other debt securities. Maturity profile of defined benefit obligation The following table provides information on the weighted average duration of the defined benefit pension obligation and the distribution and timing of benefit payments: The Group The Bank 2020 2019 2020 2019 Years Years Years Years Duration of the defined benefit obligation 19 18 17 16 The Group The Bank 2020 2019 2020 2019 £m £m £m £m Maturity analysis of benefits expected to be paid: Within 12 months 1,293 1,274 914 892 Between 1 and 2 years 1,350 1,373 940 963 Between 2 and 5 years 4,347 4,455 2,989 3,086 Between 5 and 10 years 8,301 8,426 5,547 5,673 Between 10 and 15 years 9,093 9,229 5,796 5,962 Between 15 and 25 years 17,485 17,400 10,590 10,603 Between 25 and 35 years 13,479 13,999 7,709 8,044 Between 35 and 45 years 7,162 8,291 3,645 4,266 In more than 45 years 2,287 3,160 874 1,208 Maturity analysis method and assumptions The projected benefit payments are based on the assumptions underlying the assessment of the obligations, including allowance for expected future inflation. They are shown in their undiscounted form and therefore appear large relative to the discounted assessment of the defined benefit obligations recognised in the Group’s balance sheet. They are in respect of benefits that have been accrued prior to the respective year-end date only and make no allowance for any benefits that may have been accrued subsequently. Defined contribution schemes The Group operates a number of defined contribution pension schemes in the UK and overseas, principally Your Tomorrow and the defined contribution sections of the Lloyds Bank Pension Scheme No. 1. During the year ended 31 December 2020 the charge to the continuing operations income statement in respect of defined contribution schemes was £305 million (2019: £273 million; 2018: £288 million), representing the contributions payable by the employer in accordance with each scheme’s rules. In addition, in 2018 £3 million was charged within discontinued operations (see note 13). Other post-retirement benefit schemes The Group operates a number of schemes which provide post-retirement healthcare benefits to certain employees, retired employees and their dependants. The principal scheme relates to former Lloyds Bank staff and under this scheme the Group has undertaken to meet the cost of post-retirement healthcare for all eligible former employees (and their dependants) who retired prior to 1 January 1996. The Group has entered into an insurance contract to provide these benefits and a provision has been made for the estimated cost of future insurance premiums payable. For the principal post-retirement healthcare scheme, the latest actuarial valuation of the liability was carried out at 31 December 2020 by qualified independent actuaries. The principal assumptions used were as set out above, except that the rate of increase in healthcare premiums has been assumed at 6.40 per cent (2019: 6.54 per cent). Movements in the other post-retirement benefits obligation: The Group The Bank 2020 2019 2020 2019 £m £m £m £m At 1 January (126) (124) (85) (84) Actuarial gains (losses) 16 (6) 15 (3) Insurance premiums paid 4 7 3 5 Charge for the year (3) (4) (2) (2) Exchange and other adjustments — 1 1 (1) At 31 December (109) (126) (68) (85)

DEFERRED TAX

DEFERRED TAX	12 Months Ended
	Dec. 31, 2020
Disclosure of deferred taxes [text block] [Abstract]
DEFERRED TAX	29 DEFERRED TAX The Group’s and the Bank’s deferred tax assets and liabilities are as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Statutory position Deferred tax assets 3,468 3,366 2,109 2,029 Deferred tax liabilities — — — — Net deferred tax asset 3,468 3,366 2,109 2,029 Tax disclosure Deferred tax assets 5,327 4,731 3,042 2,734 Deferred tax liabilities (1,859) (1,365) (933) (705) Net deferred tax asset 3,468 3,366 2,109 2,029 The statutory position reflects the deferred tax assets and liabilities as disclosed in the consolidated balance sheet and takes into account the ability of the Group and the Bank to net assets and liabilities where there is a legally enforceable right of offset. The tax disclosure of deferred tax assets and liabilities ties to the amounts outlined in the tables below which splits the deferred tax assets and liabilities by type, before such netting. As a result of legislation enacted in 2016, the UK corporation tax rate had been expected to reduce from 19 per cent to 17 per cent on 1 April 2020. The Group measures its deferred tax assets and liabilities at the value expected to be recoverable or payable in future periods, and so at 31 December 2019 substantially all of its deferred tax was measured using the 17 per cent tax rate. During the December 2019 election campaign, however, the UK government stated its intention to maintain the corporation tax rate at 19 per cent, and this tax rate was substantively enacted on 17 March 2020. The Group therefore remeasured its deferred tax assets and liabilities at 19 per cent. The deferred tax impact of this remeasurement in 2020 is a credit of £435 million in the income statement and a charge of £50 million in other comprehensive income. On 3 March 2021, the UK Government announced its intention to increase the rate of corporation tax from 19 per cent to 25 per cent with effect from 1 April 2023. Had this change in corporation tax been enacted on 31 December 2020, the impact would have been to increase net deferred tax assets by approximately £900 million. The UK Government also announced that in 2021 it will undertake a review of the surcharge on banking companies, its intention being to ensure that the combined rate of corporation tax and banking surcharge on bank profits does not increase substantially from its current level. The results of this review are expected to be announced later in 2021. On 29 October 2018, the UK government announced its intention to restrict the use of capital tax losses to 50 per cent of any future gains arising. This restriction was substantively enacted on 2 July 2020 and as a result additional deferred tax liabilities of £16 million for the Group and £3 million for the Bank were recognised, with an impact of £nil in the income statement and £16 million in other comprehensive income for the Group and £7 million in the income statement and a credit of £4 million in other comprehensive income for the Bank, in respect of unrealised gains at that date. Movements in deferred tax liabilities and assets (before taking into consideration the offsetting of balances within the same taxing jurisdiction) can be summarised as follows: The Group Tax losses Property, Pension Provisions Share-based Derivatives Asset 1 Other Total Deferred tax assets £m £m £m £m £m £m £m £m £m At 1 January 2019 3,783 682 79 196 28 — — 6 4,774 (Charge) credit to the income statement (183) (12) (100) (87) 4 19 — 126 (233) Credit to other comprehensive income — — 74 116 — — — — 190 At 31 December 2019 3,600 670 53 225 32 19 — 132 4,731 (Charge) credit to the income statement 454 8 6 4 (5) (12) 28 94 577 (Charge) credit to other comprehensive income — — (3) 22 — — — — 19 At 31 December 2020 4,054 678 56 251 27 7 28 226 5,327 Capitalised Acquisition Pension Derivatives Asset 1 Other Total Deferred tax liabilities £m £m £m £m £m £m £m At 1 January 2019 (36) (698) (273) (388) (101) (56) (1,552) (Charge) credit to the income statement 15 215 59 (34) (21) (53) 181 (Charge) credit to other comprehensive income — — 64 (140) 84 — 8 Exchange and other adjustments — — — — — (2) (2) At 31 December 2019 (21) (483) (150) (562) (38) (111) (1,365) (Charge) credit to the income statement (207) 147 (77) (106) (22) (94) (359) (Charge) credit to other comprehensive income — — (165) (31) 60 — (136) Exchange and other adjustments — — — — — 1 1 At 31 December 2020 (228) (336) (392) (699) — (204) (1,859) 1 Financial assets at fair value through other comprehensive income. The Bank Tax losses Property, Pension Provisions Share-based Other Total Deferred tax assets £m £m £m £m £m £m £m At 1 January 2019 2,284 375 30 53 20 1 2,763 (Charge) credit to the income statement (86) (32) (57) (41) (1) 12 (205) Credit to other comprehensive income — — 60 116 — — 176 At 31 December 2019 2,198 343 33 128 19 13 2,734 (Charge) credit to the income statement 309 (38) 1 10 (1) 9 290 (Charge) credit to other comprehensive income — — (4) 22 — — 18 At 31 December 2020 2,507 305 30 160 18 22 3,042 Capitalised Pension Derivatives Asset 1 Other Total Deferred tax liabilities £m £m £m £m £m £m At 1 January 2019 (31) (176) (431) (103) (38) (779) (Charge) credit to the income statement 12 59 — (19) 17 69 (Charge) credit to other comprehensive income — 20 (105) 86 (1) — Exchange and other adjustments — — — — 5 5 At 31 December 2019 (19) (97) (536) (36) (17) (705) (Charge) credit to the income statement (193) (5) 1 (9) 12 (194) (Charge) credit to other comprehensive income — (105) 30 40 — (35) Exchange and other adjustments — — — — 1 1 At 31 December 2020 (212) (207) (505) (5) (4) (933) 1 Financial assets at fair value through other comprehensive income. Deferred tax not recognised Deferred tax assets of approximately £104 million (2019: £111 million) for the Group and £90 million (2019: £84 million) for the Bank have not been recognised in respect of £532 million for the Group and £460 million for the Bank of UK tax losses and other temporary differences which can only be used to offset future capital gains. UK capital losses can be carried forward indefinitely. In addition, no deferred tax asset is recognised in respect of unrelieved foreign tax credits of £46 million (2019: £46 million) for the Group and £7 million (2019: £7 million) for the Bank, as there are no expected future taxable profits against which the credits can be utilised. These credits can be carried forward indefinitely. No deferred tax has been recognised in respect of foreign trade losses where it is not more likely than not that we will be able to utilise them in future periods. Of the asset not recognised, £34 million for the Group and £nil for the Bank (2019: £35 million for the Group and £nil for the Bank) relates to losses that will expire if not used within 20 years, and £43 million for the Group and £4 million for the Bank (2019: £45 million for the Group and £5 million for the Bank) relates to losses with no expiry date. As a result of parent company exemptions on dividends from subsidiaries and on capital gains on disposal there are no significant taxable temporary differences associated with investments in subsidiaries, branches, associates and joint arrangements.

OTHER PROVISIONS

OTHER PROVISIONS	12 Months Ended
	Dec. 31, 2020
Disclosure of other provisions [text block] [Abstract]
OTHER PROVISIONS	30 OTHER PROVISIONS The Group Provisions Payment Other Other Total £m £m £m £m £m At 1 January 2020 173 1,874 395 696 3,138 Exchange and other adjustments — — 2 — 2 Provisions applied — (1,700) (465) (190) (2,355) Charge for the year 253 85 329 270 937 At 31 December 2020 426 259 261 776 1,722 The Bank Provisions Payment Other Other Total £m £m £m £m £m At 1 January 2020 90 622 161 563 1,436 Exchange and other adjustments — — 4 2 6 Provisions applied — (726) (233) (148) (1,107) Charge for the year 155 169 143 166 633 At 31 December 2020 245 65 75 583 968 Provisions for financial commitments and guarantees Provisions are recognised for expected credit losses on undrawn loan commitments and financial guarantees. See also note 16. Payment protection insurance (excluding MBNA) The Group has made provisions for PPI costs totalling £21,906 million; of which £85 million was recognised in the final quarter of the year ended 31 December 2020. Of the approximately six million enquiries received pre-deadline, more than 99 per cent have now been processed. The £85 million charge in the fourth quarter was driven by the impact of coronavirus delaying operational activities during 2020, the final stages of work to ensure operational completeness ahead of an orderly programme close and final validation of information requests and complaints with third parties that resulted in a limited number of additional complaints to be handled. A small part of the costs incurred during the year also reflect the costs associated with litigation activity to date. At 31 December 2020, a provision of £198 million remained unutilised relating to complaints and associated administration costs excluding amounts relating to MBNA. Total cash payments were £1,459 million during the year ended 31 December 2020. Payment protection insurance (MBNA) As announced in December 2016, the Group's exposure continues to remain capped at £240 million under the terms of the MBNA sale and purchase agreement. No additional charge has been made by MBNA to its PPI provision in the year ended 31 December 2020; total cash payments in the year were £241 million and the remaining provision at 31 December 2020 was £61 million (31 December 2019: £302 million). Other provisions for legal actions and regulatory matters In the course of its business, the Group is engaged in discussions with the PRA, FCA and other UK and overseas regulators and other governmental authorities on a range of matters. The Group also receives complaints in connection with its past conduct and claims brought by or on behalf of current and former employees, customers, investors and other third parties and is subject to legal proceedings and other legal actions. Where significant, provisions are held against the costs expected to be incurred in relation to these matters and matters arising from related internal reviews. During the year ended 31 December 2020 the Group charged a further £329 million in respect of legal actions and other regulatory matters, and the unutilised balance at 31 December 2020 was £261 million (31 December 2019: £395 million). The most significant items are as follows. HBOS Reading – review The Group completed its compensation assessment for those within the Customer Review in 2019 with more than £109 million of compensation paid, in addition to £15 million for ex-gratia payments and £6 million for the reimbursement of legal fees. The Group is applying the recommendations from Sir Ross Cranston’s review, issued in December 2019, including a reassessment of direct and consequential losses by an independent panel, an extension of debt relief and a wider definition of de facto directors. Further details of the panel were announced on 3 April 2020 and the panel's full scope and methodology was published on 7 July 2020. The panel’s stated objective is to consider cases via a non-legalistic and fair process, and to make their decisions in a generous, fair and common-sense manner. Details of an appeal process for the further assessments of debt relief and de facto director status have also been announced. The Group continues to make progress on its assessment of claims for further debt relief and de facto director status, completing preliminary assessments for 98 per cent of claims on both debt relief and de facto directors. As part of these activities the Group has recorded charges in relation to compensation payments and associated costs (projected to the fourth quarter of 2021) in 2020 in applying the recommendations, in respect of debt relief and de facto director status. During 2021, decisions from the independent panel re-review on direct and consequential losses will start to be issued, which is likely to result in further charges but it is not possible to estimate the potential impact at this stage. The Group is committed to implementing Sir Ross' recommendations in full. The Dame Linda Dobbs review, which is considering the Group’s handling of HBOS Reading between January 2009 and January 2017, is now expected to complete towards the end of 2021. The cost of undertaking the review is included in the revised provision. The 2020 charge of £159 million, and lifetime cost of £435 million, includes both compensation payments and operational costs. Arrears handling related activities The Group has provided an additional £35 million in the year ended 31 December 2020 for arrears handling related activities, bringing the total provided to date to £1,016 million; the unutilised balance at 31 December 2020 was £62 million. Other Following the sale of TSB Banking Group plc, the Group raised a provision of £665 million in relation to various ongoing commitments; £111 million of this provision remained unutilised at 31 December 2020. Provisions are made for staff and other costs related to Group restructuring initiatives at the point at which the Group becomes committed to the expenditure. At 31 December 2020 provisions of £196 million (31 December 2019: £114 million) were held. The Group carries provisions of £112 million (2019: £118 million) for indemnities and other matters relating to legacy business disposals in prior years.

SUBORDINATED LIABILITIES

SUBORDINATED LIABILITIES	12 Months Ended
	Dec. 31, 2020
Disclosure of subordinated liabilities [text block] [Abstract]
SUBORDINATED LIABILITIES	31 SUBORDINATED LIABILITIES The movement in subordinated liabilities during the year was as follows: Preferred Undated Dated Total The Group £m £m £m £m At 1 January 2019 3,210 529 9,006 12,745 Issued during the year: 4.1378% Dated Subordinated Notes due 2026 — — 492 492 2.68229% Dated Subordinated Notes due 2038 — — 70 70 2.0367% Dated Subordinated Notes due 2028 — — 218 218 — — 780 780 Repurchases and redemptions during the year 1 : 13% Step-up Perpetual Capital Securities callable 2019 (49) — — (49) 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019 — — (135) (135) 9.375% Subordinated Bonds 2021 — — (328) (328) 6.375% Subordinated Instruments 2019 — — (250) (250) (49) — (713) (762) Foreign exchange movements (83) (36) (276) (395) Other movements (all non-cash) 189 23 6 218 At 31 December 2019 3,267 516 8,803 12,586 Issued during the year: 2.6787% Fixed rate bond due 2025 — — 303 303 £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 471 471 £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 293 293 — — 1,067 1,067 Repurchases and redemptions during the year 1 : 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million) (119) — — (119) 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million) (519) — — (519) 7.281% Perpetual Regulatory Tier One Securities (Series B) (£150 million) (123) — — (123) 6.85% Non-cumulative Perpetual Preferred Securities (US$1,000 million) (580) — — (580) 7.881% Guaranteed Non-voting Non-cumulative Preferred Securities (£245 million) (289) — — (289) 6.5% Dated Subordinated Notes 2020 (€1,500 million) — — (1,464) (1,464) 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million) — — (276) (276) 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million) — — (370) (370) 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million) — — (674) (674) Subordinated Floating Rate Notes 2020 (€100 million) — — (90) (90) 9.625% Subordinated Bonds 2023 (£300 million) — — (240) (240) 7.375% Dated Subordinated Notes 2020 — — (4) (4) (1,630) — (3,118) (4,748) Foreign exchange movements (59) 15 105 61 Other movements (all non-cash) 194 (26) 108 276 At 31 December 2020 1,772 505 6,965 9,242 1 The repurchases and redemptions resulted in cash outflows of £4,156 million (2019: £762 million). Certain of the above securities were issued or redeemed under exchange offers, which did not result in an extinguishment of the original financial liability for accounting purposes. Preferred Undated Dated Total The Bank £m £m £m £m At 1 January 2019 2,312 437 6,779 9,528 Issued in the year: 4.1378% Dated Subordinated Notes due 2026 — — 492 492 2.68229% Dated Subordinated Notes due 2038 — — 70 70 2.0367% Dated Subordinated Notes due 2028 — — 218 218 — — 780 780 Repurchases and redemptions during the year 1 : 13% Step-up Perpetual Capital Securities callable 2019 (49) — — (49) 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019 — — (135) (135) (49) — (135) (184) Foreign exchange movements (57) (12) (206) (275) Other movements (all non-cash) 28 — 32 60 At 31 December 2019 2,234 425 7,250 9,909 Issued in the year: 2.6787% Fixed rate bond due 2025 — — 303 303 £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 517 517 £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 394 394 — — 1,214 1,214 Repurchases and redemptions during the year 1 : 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million) (119) — — (119) 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million) (519) — — (519) 6.5% Dated Subordinated Notes 2020 (€1,500 million) — — (1,464) (1,464) 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million) — — (370) (370) 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million) — — (674) (674) Subordinated Floating Rate Notes 2020 (€100 million) — — (90) (90) 9.625% Subordinated Bonds 2023 (£300 million) — — (240) (240) 7.375% Dated Subordinated Notes 2020 — — (4) (4) (638) — (2,842) (3,480) Foreign exchange movements (43) (10) 50 (3) Other movements (all non-cash) 19 (1) 93 111 At 31 December 2020 1,572 414 5,765 7,751 1 The repurchases and redemptions resulted in cash outflows of £2,726 million (2019: £184 million). Certain of the above securities were issued or redeemed under exchange offers, which did not result in an extinguishment of the original financial liability for accounting purposes. These securities will, in the event of the winding-up of the issuer, be subordinated to the claims of depositors and all other creditors of the issuer, other than creditors whose claims rank equally with, or are junior to, the claims of the holders of the subordinated liabilities. The subordination of specific subordinated liabilities is determined in respect of the issuer and any guarantors of that liability. The claims of holders of preference shares and preferred securities are generally junior to those of the holders of undated subordinated liabilities, which in turn are junior to the claims of holders of the dated subordinated liabilities. Neither the Group nor the Bank has had any defaults of principal, interest or other breaches with respect to its subordinated liabilities during 2020 (2019: none).

SHARE CAPITAL

SHARE CAPITAL	12 Months Ended
	Dec. 31, 2020
Disclosure of classes of share capital [text block] [Abstract]
SHARE CAPITAL	32 SHARE CAPITAL (1) Authorised share capital The Group and Bank 2020 2019 2018 £m £m £m Sterling 1,650 million ordinary shares of £1 each 1,650 1,650 1,650 1 cumulative floating rate Preference share of £1 — — — 100 6 per cent Non-Cumulative Redeemable Preference shares of £1 each — — — 175 million Preference shares of 25p each 44 44 44 1,694 1,694 1,694 US dollars US$m US$m US$m 160 million Preference shares of 25 cents each 40 40 40 Euro €m €m €m 160 million Preference shares of 25 cents each 40 40 40 Japanese yen ¥m ¥m ¥m 50 million Preference shares of ¥25 each 1,250 1,250 1,250 (2) Issued and fully paid ordinary shares 2020 2019 2018 2020 2019 2018 Number of Number of Number of £m £m £m Sterling Ordinary shares of £1 each At 1 January 1,574,285,751 1,574,285,751 1,574,285,751 1,574 1,574 1,574 Issued in the year 1 — — — — — At 31 December 1,574,285,752 1,574,285,751 1,574,285,751 1,574 1,574 1,574 Share capital and control There are no limitations on voting rights or restrictions on the transfer of shares in the Bank other than as set out in the articles of association, and certain restrictions which may from time to time be imposed by law and regulations (for example, insider trading laws). Ordinary shares The holders of ordinary shares are entitled to receive the Bank’s report and accounts, attend, speak and vote at general meetings and appoint proxies to exercise voting rights. Holders of ordinary shares may also receive a dividend (subject to the provisions of the Bank’s articles of association) and on a winding up may share in the assets of the Bank. Issued and fully paid preference shares The Bank has in issue various classes of preference shares which are all classified as liabilities under accounting standards.

SHARE PREMIUM ACCOUNT

SHARE PREMIUM ACCOUNT	12 Months Ended
	Dec. 31, 2020
Disclosure For Share Premium Account Explanatory [Abstract]
SHARE PREMIUM ACCOUNT	33 SHARE PREMIUM ACCOUNT The Group and Bank 2020 2019 2018 £m £m £m At 1 January and 31 December 600 600 600

OTHER RESERVES

OTHER RESERVES	12 Months Ended
	Dec. 31, 2020
Disclosure of reserves within equity [text block] [Abstract]
OTHER RESERVES	34 OTHER RESERVES The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Other reserves comprise: Merger reserve 6,348 6,348 6,348 — — — Revaluation reserve in respect of debt securities held at fair value through other comprehensive income (558) (538) (379) 14 103 281 Revaluation reserve in respect of equity shares held at fair value through other comprehensive income — — — — — — Cash flow hedging reserve 1,507 1,556 1,110 1,367 1,607 1,268 Foreign currency translation reserve (116) (116) (114) 1 — (6) At 31 December 7,181 7,250 6,965 1,382 1,710 1,543 The merger reserve arose on the transfer of HBOS plc from the Bank’s ultimate holding company in January 2010. The revaluation reserve in respect of debt securities held at fair value through other comprehensive income represents the cumulative after tax unrealised change in the fair value of financial assets so classified since initial recognition; or in the case of financial assets obtained on acquisitions of businesses, since the date of acquisition. The cash flow hedging reserve represents the cumulative after-tax gains and losses on effective cash flow hedging instruments that will be reclassified to the income statement in the periods in which the hedged item affects profit or loss. The foreign currency translation reserve represents the cumulative after-tax gains and losses on the translation of foreign operations and exchange differences arising on financial instruments designated as hedges of the Group’s net investment in foreign operations. Movements in other reserves were as follows: The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Merger reserve At 1 January and 31 December 6,348 6,348 6,348 — — — The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Revaluation reserve in respect of debt securities held at fair value through other comprehensive income At 1 January (538) (379) (195) 103 281 483 Change in fair value 46 (34) (31) 12 (50) (58) Deferred tax 29 11 31 (8) 13 34 Current tax (2) — — — — — 73 (23) — 4 (37) (24) Income statement transfers in respect of disposals (note 8) (145) (196) (268) (138) (201) (258) Deferred tax 47 61 84 44 61 80 (98) (135) (184) (94) (140) (178) Impairment recognised in the income statement 5 (1) — 1 (1) — At 31 December (558) (538) (379) 14 103 281 The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Revaluation reserve in respect of equity shares held at fair value through other comprehensive income At 1 January — — (35) — — (42) Change in fair value — — (98) — — (102) Deferred tax (16) 12 22 4 12 — Current tax — — — — — — (16) 12 (76) 4 12 (102) Realised gains and losses transferred to retained profits — — 132 — — 144 Deferred tax 16 (12) (21) (4) (12) — Current tax — — — — — — 16 (12) 111 (4) (12) 144 At 31 December — — — — — — The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Cash flow hedging reserve At 1 January 1,556 1,110 1,573 1,607 1,268 1,554 Change in fair value of hedging derivatives 709 1,166 91 85 892 255 Deferred tax (229) (290) (43) (66) (217) (72) 480 876 48 19 675 183 Income statement transfers (727) (580) (691) (355) (448) (628) Deferred tax 198 150 180 96 112 159 (529) (430) (511) (259) (336) (469) At 31 December 1,507 1,556 1,110 1,367 1,607 1,268 The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Foreign currency translation reserve At 1 January (116) (114) (207) — (6) 76 Currency translation differences arising in the year — (2) (15) 1 6 2 Income statement transfers — — 108 — — (84) At 31 December (116) (116) (114) 1 — (6)

RETAINED PROFITS

RETAINED PROFITS	12 Months Ended
	Dec. 31, 2020
Disclosure of Retained Profits [Abstract]
RETAINED PROFIT	35 RETAINED PROFITS The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m At 1 January 24,549 27,321 36,749 42,470 45,051 52,843 Profit attributable to ordinary shareholders (see below for the Bank) 1,023 2,515 3,907 224 2,165 5,866 Capital transactions with parent Dividends paid (note 37) — (4,100) (11,022) — (4,100) (11,022) Capital repayments — — (2,975) — — (2,975) Capital contributions received 140 229 265 140 229 265 Return of capital contributions (4) (5) (9) (4) (5) (9) 136 (3,876) (13,741) 136 (3,876) (13,741) Realised gains and losses on equity shares held at fair value through other comprehensive income (16) 12 (111) 4 12 (144) Post-retirement defined benefit scheme remeasurements 113 (1,117) 120 (102) (576) (162) Share of other comprehensive income of associates and joint ventures — — 8 — — — Gains and losses attributable to own credit risk (net of tax) 1 (55) (306) 389 (55) (306) 389 At 31 December 25,750 24,549 27,321 42,677 42,470 45,051 1 During 2020 the Group derecognised, on redemption, financial liabilities on which cumulative fair value movements relating to own credit of £1 million net of tax (2019: £nil; 2018: £nil), had been recognised directly in retained profits. The profit after tax of the Bank was arrived at as follows: 2020 2019 2018 £m £m £m Net interest income 4,519 5,684 6,129 Net fee and commission income 655 743 839 Dividends received 44 1,331 4,848 Net trading and other operating income 2,952 2,169 2,389 Other income 3,651 4,243 8,076 Total income 8,170 9,927 14,205 Regulatory provisions (312) (996) (939) Other operating expenses (5,516) (5,337) (5,864) Total operating expenses (5,828) (6,333) (6,803) Impairment (1,898) (503) (504) Profit before tax 444 3,091 6,898 Tax credit (expense) 197 (645) (757) Profit for the year 641 2,446 6,141 Profit attributable to ordinary shareholders 224 2,165 5,866 Profit attributable to other equity holders 417 281 275 Profit for the year 641 2,446 6,141

OTHER EQUITY INSTRUMENTS

OTHER EQUITY INSTRUMENTS	12 Months Ended
	Dec. 31, 2020
Disclosure Of Other Equity Instruments Explanatory [Abstract]
OTHER EQUITY INSTRUMENTS	36 OTHER EQUITY INSTRUMENTS The Group and Bank 2020 2019 2018 £m £m £m At 1 January 4,865 3,217 3,217 Issued in the year: US$500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities 383 — — €750 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities 687 — — £500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities — 496 — US$1,500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities — 1,152 — 1,070 1,648 — Profit for the year attributable to other equity holders 417 281 275 Distributions on other equity instruments (417) (281) (275) At 31 December 5,935 4,865 3,217 The Bank has in issue £5,935 million of Sterling, Dollar and Euro Additional Tier 1 (AT1) securities to Lloyds Banking Group plc. The AT1 securities are fixed rate resetting or floating rate Perpetual Subordinated Permanent Write-Down Securities with no fixed maturity or redemption date. The principal terms of the AT1 securities are described below: – The securities rank behind the claims against the Bank of unsubordinated creditors on a Winding-Up. – The fixed rate reset securities bear a fixed rate of interest until the first call date. After the initial call date, in the event that they are not redeemed, the fixed rate reset AT1 securities will bear interest at rates fixed periodically in advance. The floating rate AT1 securities will be reset quarterly both prior to and following the first call date. – Interest on the securities will be due and payable only at the sole discretion of the Bank and the Bank may at any time elect to cancel any Interest Payment (or any part thereof) which would otherwise be payable on any Interest Payment Date. There are also certain restrictions on the payment of interest as specified in the terms. – The securities are undated and are repayable, at the option of the Bank, in whole at the first call date, or at any Interest Payment date thereafter. In addition, the AT1 securities are repayable, at the option of the Bank, in whole for certain regulatory or tax reasons. Any repayments require the prior consent of the PRA. – The securities will be subject to a Permanent Write Down should the fully Loaded Common Equity Tier 1 ratio of the Bank fall below 7.0 per cent.

DIVIDENDS ON ORDINARY SHARES

DIVIDENDS ON ORDINARY SHARES	12 Months Ended
	Dec. 31, 2020
Disclosure of dividends [text block] [Abstract]
DIVIDENDS ON ORDINARY SHARES	37 DIVIDENDS ON ORDINARY SHARES 2020 2019 2018 £m £m £m Dividends paid during the year were as follows: Interim dividends — 4,100 11,022 The directors have proposed an interim dividend of £1,000 million to be paid in May 2021.

SHARE-BASED PAYMENTS

SHARE-BASED PAYMENTS	12 Months Ended
	Dec. 31, 2020
Disclosure of share-based payment arrangements [text block] [Abstract]
SHARE-BASED PAYMENTS	38 SHARE-BASED PAYMENTS During the year ended 31 December 2020 Lloyds Banking Group pic operated a number of share-based payment schemes for which employees of the Lloyds Bank Group were eligible and all of which are equity settled. Details of all schemes operated by Lloyds Banking Group are set out below; these are managed and operated on a Lloyds Banking Group-wide basis. The amount charged to the Group’s income statement in respect of Lloyds Banking Group share-based payment schemes, and which is included within staff costs (note 9), was £181 million (2019: £337 million; 2018: £417 million) with a further £6 million in 2018 included within discontinued operations (see note 13). During the year ended 31 December 2020 the Lloyds Banking Group operated the following share-based payment schemes, all of which are equity settled. Group Performance Share plan The Group operates a Group Performance Share plan that is equity settled. No award has been made in respect of 2020; the charge in the year relates to prior year awards for which the deferral period has completed. Save-As-You-Earn schemes Eligible employees may enter into contracts through the Save-As-You-Earn (SAYE) schemes to save up to £500 per month and, at the expiry of a fixed term of three years, have the option to use these savings within six months of the expiry of the fixed term to acquire shares in the Group at a discounted price of no less than 80 per cent (90 per cent for the 2020 plan) of the market price at the start of the invitation. Movements in the number of share options outstanding under the SAYE schemes are set out below: 2020 2019 Number Weighted Number Weighted Outstanding at 1 January 1,068,094,073 44.55 802,994,918 49.30 Granted 779,229,797 24.25 487,654,212 39.87 Exercised (255,706,663) 47.51 (27,303,963) 51.23 Forfeited (6,938,102) 43.30 (15,830,204) 48.69 Cancelled (389,767,675) 42.24 (130,068,149) 49.03 Expired (74,772,515) 47.26 (49,352,741) 58.74 Outstanding at 31 December 1,120,138,915 30.39 1,068,094,073 44.55 Exercisable at 31 December 792,741 47.49 227,139 60.70 The weighted average share price at the time that the options were exercised during 2020 was £0.61 (2019: £0.59). The weighted average remaining contractual life of options outstanding at the end of the year was 2.98 years (2019: 2.22 years). The weighted average fair value of SAYE options granted during 2020 was £0.05 (2019: £0.10). The fair values of the SAYE options have been determined using a standard Black-Scholes model. Other share option plans Lloyds Banking Group Executive Share Plan 2003 The Plan was adopted in December 2003 and under the Plan share options may be granted to senior employees. Options under this plan have been granted specifically to facilitate recruitment (to compensate new recruits for any lost share awards), and also to make grants to key individuals for retention purposes. In some instances, grants may be made subject to individual performance conditions. Participants are not entitled to any dividends paid during the vesting period. 2020 2019 Number Weighted Number Weighted Outstanding at 1 January 7,634,638 Nil 10,263,028 Nil Granted 1,990,449 Nil 2,336,171 Nil Exercised (2,122,302) Nil (4,455,481) Nil Vested (47,337) Nil (69,005) Nil Forfeited (111,100) Nil (39,250) Nil Lapsed (677,976) Nil (400,825) Nil Outstanding at 31 December 6,666,372 Nil 7,634,638 Nil Exercisable at 31 December 3,150,407 Nil 2,683,267 Nil The weighted average fair value of options granted in the year was £0.33 (2019: £0.59). The fair values of options granted have been determined using a standard Black-Scholes model. The weighted average share price at the time that the options were exercised during 2020 was £0.36 (2019: £0.60). The weighted average remaining contractual life of options outstanding at the end of the year was 4.1 years (2019: 3.8 years). Other share plans Lloyds Banking Group Executive Group Ownership Share Plan The plan, introduced in 2006, is aimed at delivering shareholder value by linking the receipt of shares to an improvement in the performance of the Group over a three year period. Awards are made within limits set by the rules of the plan, with the limits determining the maximum number of shares that can be awarded equating to three times annual salary. In exceptional circumstances this may increase to four times annual salary. At the end of the performance period for the 2017 grant, the targets had not been fully met and therefore these awards vested in 2020 at a rate of 49.7 per cent. 2020 2019 Number Number Outstanding at 1 January 459,904,745 417,385,636 Granted 211,214,605 174,490,843 Vested (47,775,806) (88,318,950) Forfeited (96,015,542) (55,029,439) Dividend award 6,659,525 11,376,655 Outstanding at 31 December 533,987,527 459,904,745 Awards in respect of the 2018 grant vested in 2021 at a rate of 33.75 per cent. In previous years participants were entitled to any dividends paid in the vesting period. However, following a regulatory change prohibiting the payment of dividend equivalents on awards, the number of shares subject to award was determined by applying an adjustment factor to the share price on grant. The weighted average fair value of awards granted in the year was £0.28 (2019: £0.45). Chief Financial Officer Buyout William Chalmers joined the Group on 3 June 2019 and was appointed as Chief Financial Officer on 1 August 2019 on the retirement of George Culmer. He was granted deferred share awards over 4,086,632 shares, to replace unvested awards from his former employer, Morgan Stanley, that were forfeited as a result of him joining the Group. 2020 2019 Number Number Outstanding at 1 January 3,268,460 — Granted — 4,086,632 Exercised (1,457,748) (818,172) Outstanding at 31 December 1,810,712 3,268,460 The weighted average fair value of awards granted in 2019 was £0.55. The fair value calculations at 31 December 2020 for grants made in the year, using Black-Scholes models and Monte Carlo simulation, are based on the following assumptions: SAYE Executive Executive Group Ownership Share Plan Weighted average risk-free interest rate (0.03%) (0.01%) 0.18% Weighted average expected life 3.2 years 1.2 years 3.6 years Weighted average expected volatility 32% 42% 23% Weighted average expected dividend yield 5.3% 5.3% 5.3% Weighted average share price £0.28 £0.35 £0.47 Weighted average exercise price £0.24 Nil Nil Expected volatility is a measure of the amount by which the Group’s shares are expected to fluctuate during the life of an option. The expected volatility is estimated based on the historical volatility of the closing daily share price over the most recent period that is commensurate with the expected life of the option. The historical volatility is compared to the implied volatility generated from market traded options in the Group’s shares to assess the reasonableness of the historical volatility and adjustments made where appropriate. Share Incentive Plan Free Shares An award of shares may be made annually to employees up to a maximum of £3,600. The shares awarded are held in trust for a mandatory period of three years on the employee’s behalf, during which period the employee is entitled to any dividends paid on such shares. The award is subject to a non-market based condition. If an employee leaves the Group within this three year period for other than a ‘good’ reason, all of the shares awarded will be forfeited. On 20 May 2020, the Group made an award of £200 (2019: £200) of shares to all eligible employees. The number of shares awarded was 45,612,424 (2019: 22,422,337), with an average fair value of £0.30 (2019: £0.62) based on the market price at the date of award. Matching shares The Group undertakes to match shares purchased by employees up to the value of £45 per month; these matching shares are held in trust for a mandatory period of three years on the employee’s behalf, during which period the employee is entitled to any dividends paid on such shares. The award is subject to a non-market based condition: if an employee leaves within this three year period for other than a ‘good’ reason, all of the matching shares are forfeited. Similarly if the employees sell their purchased shares within three years, their matching shares are forfeited. The number of shares awarded relating to matching shares in 2020 was 62,262,140 (2019: 37,346,812), with an average fair value of £0.34 (2019: £0.56), based on market prices at the date of award. Fixed share awards Fixed share awards were introduced in 2014 in order to ensure that total fixed remuneration is commensurate with role and to provide a competitive reward package for certain Lloyds Banking Group employees, with an appropriate balance of fixed and variable remuneration, in line with regulatory requirements. The fixed share awards are delivered in Lloyds Banking Group shares, released over five years with 20 per cent being released each year following the year of award. From June 2020, the fixed share awards are released over three years with one third being released each year following the year of award. The number of shares purchased in 2020 was 13,975,993 (2019: 8,239,332). The fixed share award is not subject to any performance conditions, performance adjustment or clawback. On an employee leaving the Group, there is no change to the timeline for which shares will become unrestricted.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2020
Disclosure of related party [text block] [Abstract]
RELATED PARTY TRANSACTIONS	39 RELATED PARTY TRANSACTIONS Key management personnel Key management personnel are those persons having authority and responsibility for planning, directing and controlling the activities of an entity; the Group’s key management personnel are the members of the Lloyds Banking Group plc Group Executive Committee together with its Non-Executive Directors. The table below details, on an aggregated basis, key management personnel compensation: 2020 2019 2018 £m £m £m Compensation Salaries and other short-term benefits 12 14 13 Post-employment benefits — — — Share-based payments 12 14 17 Total compensation 24 28 30 The aggregate of the emoluments of the directors was £11.8 million (2019: £11.7 million; 2018: £12.2 million). Aggregate company contributions in respect of key management personnel to defined contribution pension schemes were £nil (2019: £nil; 2018: £nil). The total for the highest paid director (Juan Colombás) was £4,169,000 (2019: (António Horta-Osório): £4,078,000; 2018: (António Horta-Osório): £5,472,000); this did not include any gain on exercise of Lloyds Banking Group plc shares in any year. 2020 2019 2018 million million million Share options over Lloyds Banking Group plc shares At 1 January — — 1 Granted, including certain adjustments (includes entitlements of appointed key management personnel) — — — Exercised/lapsed (includes entitlements of former key management personnel) — — (1) At 31 December — — — 2020 2019 2018 million million million Share plans settled in Lloyds Banking Group plc shares At 1 January 101 84 82 Granted, including certain adjustments (includes entitlements of appointed key management personnel) 46 46 39 Exercised/lapsed (includes entitlements of former key management personnel) (30) (29) (37) At 31 December 117 101 84 The tables below detail, on an aggregated basis, balances outstanding at the year end and related income and expense, together with information relating to other transactions between the Group and its key management personnel: 2020 2019 2018 £m £m £m Loans At 1 January 2 2 2 Advanced (includes loans of appointed key management personnel) — 1 1 Repayments (includes loans of former key management personnel) — (1) (1) At 31 December 2 2 2 The loans are on both a secured and unsecured basis and are expected to be settled in cash. The loans attracted interest rates of between 0.39 per cent and 24.20 per cent in 2020 (2019: 6.45 per cent and 24.20 per cent; 2018: 6.70 per cent and 24.20 per cent). No provisions have been recognised in respect of loans given to key management personnel (2019 and 2018: £nil). 2020 2019 2018 £m £m £m Deposits At 1 January 23 20 20 Placed (includes deposits of appointed key management personnel) 26 44 33 Withdrawn (includes deposits of former key management personnel) (38) (41) (33) At 31 December 11 23 20 Deposits placed by key management personnel attracted interest rates of up to 2.0 per cent (2019: 3.0 per cent; 2018: 3.5 per cent). At 31 December 2020, the Group did not provide any guarantees in respect of key management personnel (2019 and 2018: none). At 31 December 2020, transactions, arrangements and agreements entered into by the Group and its banking subsidiaries with directors and connected persons included amounts outstanding in respect of loans and credit card transactions of £0.6 million with five directors and two connected persons (2019: £0.6 million with five directors and two connected persons; 2018: £0.5 million with five directors and two connected persons). Balances and transactions with fellow Lloyds Banking Group undertakings Balances and transactions between members of the Lloyds Bank Group In accordance with IFRS 10 Consolidated Financial Statements , transactions and balances between the Bank and its subsidiary undertakings, and between those subsidiary undertakings, have all been eliminated on consolidation and thus are not reported as related party transactions of the Group. The Bank, as a result of its position as parent of a banking group, has a large number of transactions with various of its subsidiary undertakings; these are included on the balance sheet of the Bank as follows: 2020 2019 £m £m Assets, included within: Derivative financial instruments 7,077 8,546 Financial assets at fair value through profit or loss 1,203 — Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings 128,241 200,696 136,521 209,242 Liabilities, included within: Due to fellow Lloyds Banking Group undertakings 33,170 105,075 Financial liabilities at fair value through profit or loss — 43 Derivative financial instruments 4,738 7,102 Debt securities in issue 20 — 37,928 112,220 Due to the size and volume of transactions passing through these accounts, it is neither practical nor meaningful to disclose information on gross inflows and outflows. During 2020 the Bank earned interest income on the above asset balances of £1,995 million (2019: £2,491 million; 2018: £2,305 million) and incurred interest expense on the above liability balances of £336 million (2019: £655 million; 2018: £545 million). In addition, the Bank raised recharges of £1,403 million (2019: £1,461 million; 2018: £1,315 million) on its subsidiaries in respect of costs incurred and also received fees of £56 million (2019: £62 million; 2018: £146 million), and paid fees of £26 million (2019: £57 million; 2018: £151 million), for various services provided between the Bank and its subsidiaries. Details of contingent liabilities and commitments entered into on behalf of fellow Lloyds Banking Group undertakings are given in note 40. Balances and transactions with Lloyds Banking Group plc and fellow subsidiaries of the Bank The Bank and its subsidiaries have balances due to and from the Bank’s parent company, Lloyds Banking Group plc and fellow subsidiaries of the Bank. These are included on the balance sheet as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Assets, included within: Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings 738 1,854 530 1,581 Derivative financial instruments 690 591 690 591 1,428 2,445 1,220 2,172 Liabilities, included within: Due to fellow Lloyds Banking Group undertakings 6,875 4,893 6,666 4,696 Financial liabilities at fair value through profit or loss — 1 1,121 1 Derivative financial instruments 1,424 1,986 972 1,547 Debt securities in issue 12,686 11,181 11,551 11,136 Subordinated liabilities 4,599 3,663 4,745 3,641 25,584 21,724 25,055 21,021 These balances include Lloyds Banking Group plc’s banking arrangements and, due to the size and volume of transactions passing through these accounts, it is neither practical nor meaningful to disclose information on gross inflows and outflows. During 2020 the Group earned £5 million and the Bank earned £5 million interest income on the above asset balances (2019: Group £20 million, Bank £20 million; 2018: Group £166 million, Bank £142 million); the Group incurred £478 million and the Bank incurred £461 million interest expense on the above liability balances (2019: Group £520 million, Bank £509 million; 2018: Group £370 million, Bank £334 million). Other related party transactions Pension funds The Group provides banking services to certain of its pension funds. At 31 December 2020, customer deposits of £151 million (2019: £169 million) related to the Group’s pension funds. Joint ventures and associates At 31 December 2020 there were loans and advances to customers of £28 million (2019: £75 million) outstanding and balances within customer deposits of £73 million (2019: £5 million) relating to joint ventures and associates. During the year the Group paid fees of £7 million (2019: £2 million) to the Lloyds Banking Group's Schroders Personal Wealth joint venture and also made a payment of £20 million under the terms of an Operating Margin Guarantee put in place as part of the agreements for the establishment of the joint venture.

CONTINGENT LIABILITIES, COMMITM

CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES	12 Months Ended
	Dec. 31, 2020
Disclosure of commitments and contingent liabilities [text block] [Abstract]
CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES	40 CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES Interchange fees With respect to multi-lateral interchange fees (MIFs), the Lloyds Banking Group is not involved in the ongoing litigation which involves card schemes such as Visa and Mastercard (as described below). However, the Group is a member/licensee of Visa and Mastercard and other card schemes. The litigation in question is as follows: – litigation brought by retailers against both Visa and Mastercard continues in the English Courts (and includes a judgment of the Supreme Court in June 2020 upholding the Court of Appeal's finding in 2018 that historic interchange arrangements of Mastercard and Visa infringed competition law); and – litigation brought on behalf of UK consumers in the English Courts against Mastercard, which the Supreme Court has now confirmed can proceed. Any impact on the Group of the litigation against Visa and Mastercard remains uncertain at this time, such that it is not practicable for the Group to provide an estimate of any potential financial effect. Insofar as Visa is required to pay damages to retailers for interchange fees set prior to June 2016, contractual arrangements to allocate liability have been agreed between various UK banks (including the Lloyds Banking Group) and Visa Inc, as part of Visa Inc’s acquisition of Visa Europe in 2016. These arrangements cap the maximum amount of liability to which the Lloyds Banking Group may be subject and this cap is set at the cash consideration received by the Lloyds Banking Group for the sale of its stake in Visa Europe to Visa Inc in 2016. In 2016, the Group received Visa preference stock as part of the consideration for the sale of its shares in Visa Europe. In 2020, some of these Visa preference shares were converted into Visa Inc Class A common stock (in accordance with the provisions of the Visa Europe sale documentation) and they were subsequently sold by the Group. The sale had no impact on this contingent liability. LIBOR and other trading rates Certain Lloyds Banking Group companies, together with other panel banks, have been named as defendants in private lawsuits, including purported class action suits, in the US in connection with their roles as panel banks contributing to the setting of US Dollar, Japanese Yen and Sterling London Interbank Offered Rate and the Australian BBSW reference rate. Certain of the plaintiffs' claims have been dismissed by the US Federal Court for the Southern District of New York (subject to appeals). Certain Lloyds Banking Group companies are also named as defendants in (i) UK based claims; and (ii) two Dutch class actions, raising LIBOR manipulation allegations. A number of the claims against the Lloyds Banking Group in relation to the alleged mis-sale of interest rate hedging products also include allegations of LIBOR manipulation. Furthermore, the Swiss Competition Commission concluded its investigation against Lloyds Bank plc in June 2019. However, the Lloyds Banking Group continues to respond to litigation arising out of the investigations into submissions made by panel members to the bodies that set LIBOR and various other interbank offered rates. It is currently not possible to predict the scope and ultimate outcome on the Lloyds Banking Group of the various outstanding regulatory investigations not encompassed by the settlements, any private lawsuits or any related challenges to the interpretation or validity of any of the Lloyds Banking Group's contractual arrangements, including their timing and scale. As such, it is not practicable to provide an estimate of any potential financial effect. Tax authorities The Lloyds Banking Group has an open matter in relation to a claim for group relief of losses incurred in its former Irish banking subsidiary, which ceased trading on 31 December 2010. In 2013, HMRC informed the Lloyds Banking Group that its interpretation of the UK rules means that the group relief is not available. In 2020, HMRC concluded their enquiry into the matter and issued a closure notice. The Lloyds Banking Group's interpretation of the UK rules has not changed and hence it has appealed to the First Tier Tax Tribunal, with a hearing expected in early 2022. If the final determination of the matter by the judicial process is that HMRC’s position is correct, management estimate that this would result in an increase in current tax liabilities of approximately £700 million (including interest) and a reduction in deferred tax assets of approximately £270 million. The Lloyds Banking Group, having taken appropriate advice, does not consider that this is a case where additional tax will ultimately fall due. There are a number of other open matters on which the Group is in discussions with HMRC (including the tax treatment of certain costs arising from the divestment of TSB Banking Group plc), none of which is expected to have a material impact on the financial position of the Group. Other legal actions and regulatory matters In addition, during the ordinary course of business the Group is subject to other complaints and threatened or actual legal proceedings (including class or group action claims) brought by or on behalf of current or former employees, customers, investors or other third parties, as well as legal and regulatory reviews, challenges, investigations and enforcement actions, both in the UK and overseas. All material such matters are periodically reassessed, with the assistance of external professional advisers where appropriate, to determine the likelihood of the Group incurring a liability. In those instances where it is concluded that it is more likely than not that a payment will be made, a provision is established to management's best estimate of the amount required at the relevant balance sheet date. In some cases it will not be possible to form a view, for example because the facts are unclear or because further time is needed properly to assess the merits of the case, and no provisions are held in relation to such matters. In these circumstances, specific disclosure in relation to a contingent liability will be made where material. However the Group does not currently expect the final outcome of any such case to have a material adverse effect on its financial position, operations or cash flows. Contingent liabilities, commitments and guarantees arising from the banking business The Group The Bank 2020 2019 2020 2019 £m £m £m £m Contingent liabilities Acceptances and endorsements 73 17 73 16 Other: Other items serving as direct credit substitutes 221 279 203 259 Performance bonds, including letters of credit, and other transaction-related contingencies 2,070 2,274 1,817 2,014 2,291 2,553 2,020 2,273 Total contingent liabilities 2,364 2,570 2,093 2,289 The Bank 2020 2019 £m £m Incurred on behalf of fellow Lloyds Banking Group undertakings 1 1 The contingent liabilities of the Group and the Bank arise in the normal course of banking business and it is not practicable to quantify their future financial effect. The Group The Bank 2020 2019 2020 2019 £m £m £m £m Commitments and guarantees Documentary credits and other short-term trade-related transactions 1 — — — Forward asset purchases and forward deposits placed 124 171 96 157 Undrawn formal standby facilities, credit lines and other commitments to lend: Less than 1 year original maturity: Mortgage offers made 20,128 12,647 1,720 1,120 Other commitments and guarantees 82,151 78,306 32,832 29,608 102,279 90,953 34,552 30,728 1 year or over original maturity 31,194 25,310 28,118 21,664 Total commitments and guarantees 133,598 116,434 62,766 52,549 The Bank 2020 2019 £m £m Incurred on behalf of fellow Lloyds Banking Group undertakings 3,659 4,647 Of the amounts shown above in respect of undrawn formal standby facilities, credit lines and other commitments to lend, £59,240 million (2019: £46,629 million) for the Group and £32,847 million (2019: £27,672 million) for the Bank were irrevocable. Capital commitments Excluding commitments of the Group in respect of investment property (note 21), capital expenditure contracted but not provided for at 31 December 2020 amounted to £501 million (2019: £405 million) for the Group and £nil (2019: £2 million) for the Bank. Of this amount for the Group, £501 million (2019: £400 million) related to assets to be leased to customers under operating leases. The Group’s management is confident that future net revenues and funding will be sufficient to cover these commitments.

STRUCTURED ENTITIES

STRUCTURED ENTITIES	12 Months Ended
	Dec. 31, 2020
Disclosure of unconsolidated structured entities [abstract]
STRUCTURED ENTITIES	41 STRUCTURED ENTITIES The Group’s interests in structured entities are consolidated. Details of the Group’s interests in these structured entities are set out in note 26 for securitisations and covered bond vehicles, note 28 for structured entities associated with the Group’s pension schemes, and below. Asset-backed conduits In addition to the structured entities discussed in note 26, which are used for securitisation and covered bond programmes, the Group sponsors an active asset-backed conduit, Cancara, which invests in client receivables and debt securities. The total consolidated exposure of Cancara at 31 December 2020 was £2,490 million (2019: £3,735 million), comprising £1,695 million of loans and advances (2019: £3,670 million) and £795 million of debt securities (2019: £65 million). All lending assets and debt securities held by the Group in Cancara are restricted in use, as they are held by the collateral agent for the benefit of the commercial paper investors and the liquidity providers only. The Group provides liquidity facilities to Cancara under terms that are usual and customary for standard lending activities in the normal course of the Group’s banking activities. During 2020 there have continued to be planned drawdowns on certain liquidity facilities for balance sheet management purposes, supporting the programme to provide funding alongside the proceeds of the asset-backed commercial paper issuance. The Group could be asked to provide support under the contractual terms of these arrangements including, for example, if Cancara experienced a shortfall in external funding, which may occur in the event of market disruption. The external assets in Cancara are consolidated in the Group’s financial statements.

FINANCIAL INSTRUMENTS

FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2020
Disclosure of financial instruments [text block] [Abstract]
FINANCIAL INSTRUMENTS	42 FINANCIAL INSTRUMENTS (1) Measurement basis of financial assets and liabilities The accounting policies in note 2 describe how different classes of financial instruments are measured, and how income and expenses, including fair value gains and losses, are recognised. The following tables analyse the carrying amounts of the financial assets and liabilities by category and by balance sheet heading. Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Group £m £m £m £m £m £m £m At 31 December 2020 Financial assets Cash and balances at central banks — — — — — 49,888 49,888 Items in the course of collection from banks — — — — — 300 300 Financial assets at fair value through profit or loss — — 1,674 — — — 1,674 Derivative financial instruments 674 7,667 — — — — 8,341 Loans and advances to banks — — — — — 5,950 5,950 Loans and advances to customers — — — — — 480,141 480,141 Debt securities — — — — — 5,137 5,137 Due from fellow Lloyds Banking Group undertakings — — — — — 738 738 Financial assets at amortised cost — — — — — 491,966 491,966 Financial assets at fair value through other comprehensive income — — — — 27,260 — 27,260 Total financial assets 674 7,667 1,674 — 27,260 542,154 579,429 Financial liabilities Deposits from banks — — — — — 24,997 24,997 Customer deposits — — — — — 434,569 434,569 Due to fellow Lloyds Banking Group undertakings — — — — — 6,875 6,875 Items in course of transmission to banks — — — — — 302 302 Financial liabilities at fair value through profit or loss — 3 — 6,828 — — 6,831 Derivative financial instruments 590 7,638 — — — — 8,228 Notes in circulation — — — — — 1,305 1,305 Debt securities in issue — — — — — 59,293 59,293 Other — — — — — 1,592 1,592 Subordinated liabilities — — — — — 9,242 9,242 Total financial liabilities 590 7,641 — 6,828 — 538,175 553,234 Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Group £m £m £m £m £m £m £m At 31 December 2019 Financial assets Cash and balances at central banks — — — — — 38,880 38,880 Items in the course of collection from banks — — — — — 292 292 Financial assets at fair value through profit or loss — 290 1,994 — — — 2,284 Derivative financial instruments 1,117 7,377 — — — — 8,494 Loans and advances to banks — — — — — 4,852 4,852 Loans and advances to customers — — — — — 474,470 474,470 Debt securities — — — — — 5,325 5,325 Due from fellow Lloyds Banking Group undertakings — — — — — 1,854 1,854 Financial assets at amortised cost — — — — — 486,501 486,501 Financial assets at fair value through other comprehensive income — — — — 24,617 — 24,617 Total financial assets 1,117 7,667 1,994 — 24,617 525,673 561,068 Financial liabilities Deposits from banks — — — — — 23,593 23,593 Customer deposits — — — — — 396,839 396,839 Due to fellow Lloyds Banking Group undertakings — — — — — 4,893 4,893 Items in course of transmission to banks — — — — — 354 354 Financial liabilities at fair value through profit or loss — 171 — 7,531 — — 7,702 Derivative financial instruments 1,029 8,802 — — — — 9,831 Notes in circulation — — — — — 1,079 1,079 Debt securities in issue — — — — — 76,431 76,431 Other — — — — — 1,755 1,755 Subordinated liabilities — — — — — 12,586 12,586 Total financial liabilities 1,029 8,973 — 7,531 — 517,530 535,063 Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Bank £m £m £m £m £m £m £m At 31 December 2020 Financial assets Cash and balances at central banks — — — — — 45,753 45,753 Items in the course of collection from banks — — — — — 257 257 Financial assets at fair value through profit or loss — — 1,724 — — — 1,724 Derivative financial instruments 242 12,353 — — — — 12,595 Loans and advances to banks — — — — — 5,656 5,656 Loans and advances to customers — — — — — 178,269 178,269 Debt securities — — — — — 4,315 4,315 Due from fellow Lloyds Banking Group undertakings — — — — — 128,771 128,771 Financial assets at amortised cost — — — — — 317,011 317,011 Financial assets at fair value through other comprehensive income — — — — 24,647 — 24,647 Total financial assets 242 12,353 1,724 — 24,647 363,021 401,987 Financial liabilities Deposits from banks — — — — — 10,304 10,304 Customer deposits — — — — — 264,473 264,473 Due to fellow Lloyds Banking Group undertakings — — — — — 39,836 39,836 Items in course of transmission to banks — — — — — 199 199 Financial liabilities at fair value through profit or loss — 2 — 7,905 — — 7,907 Derivative financial instruments 289 10,783 — — — — 11,072 Debt securities in issue — — — — — 48,109 48,109 Other — — — — — 885 885 Subordinated liabilities — — — — — 7,751 7,751 Total financial liabilities 289 10,785 — 7,905 — 371,557 390,536 Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Bank £m £m £m £m £m £m £m At 31 December 2019 Financial assets Cash and balances at central banks — — — — — 35,741 35,741 Items in the course of collection from banks — — — — — 252 252 Financial assets at fair value through profit or loss — 290 413 — — — 703 Derivative financial instruments 207 13,431 — — — — 13,638 Loans and advances to banks — — — — — 4,453 4,453 Loans and advances to customers — — — — — 177,569 177,569 Debt securities — — — — — 5,241 5,241 Due from fellow Lloyds Banking Group undertakings — — — — — 202,277 202,277 Financial assets at amortised cost — — — — — 389,540 389,540 Financial assets at fair value through other comprehensive income — — — — 22,160 — 22,160 Total financial assets 207 13,721 413 — 22,160 425,533 462,034 Financial liabilities Deposits from banks — — — — — 7,122 7,122 Customer deposits — — — — — 239,762 239,762 Due to fellow Lloyds Banking Group undertakings — — — — — 109,771 109,771 Items in course of transmission to banks — — — — — 198 198 Financial liabilities at fair value through profit or loss — 213 — 7,484 — — 7,697 Derivative financial instruments 267 13,944 — — — — 14,211 Debt securities in issue — — — — — 61,509 61,509 Other — — — — — 975 975 Subordinated liabilities — — — — — 9,909 9,909 Total financial liabilities 267 14,157 — 7,484 — 429,246 451,154 (2) Fair value measurement Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. It is a measure as at a specific date and may be significantly different from the amount which will actually be paid or received on maturity or settlement date. Wherever possible, fair values have been calculated using unadjusted quoted market prices in active markets for identical instruments held by the Group. Where quoted market prices are not available, or are unreliable because of poor liquidity, fair values have been determined using valuation techniques which, to the extent possible, use market observable inputs, but in some cases use non-market observable inputs. Valuation techniques used include discounted cash flow analysis and pricing models and, where appropriate, comparison to instruments with characteristics similar to those of the instruments held by the Group. The Group measures valuation adjustments for its derivative exposures on the same basis as the derivatives are managed. The carrying amount of the following financial instruments is a reasonable approximation of fair value: cash and balances at central banks, items in the course of collection from banks, items in course of transmission to banks and notes in circulation. Because a variety of estimation techniques are employed and significant estimates made, comparisons of fair values between financial institutions may not be meaningful. Readers of these financial statements are thus advised to use caution when using this data to evaluate the Group’s financial position. Fair value information is not provided for items that are not financial instruments or for other assets and liabilities which are not carried at fair value in the Group’s consolidated balance sheet. These items include intangible assets, such as brands and acquired credit card relationships; premises and equipment; and shareholders’ equity. These items are material and accordingly the Group believes that any fair value information presented would not represent the underlying value of the Group. Valuation control framework The key elements of the control framework for the valuation of financial instruments include model validation, product implementation review and independent price verification. These functions are carried out by appropriately skilled risk and finance teams, independent of the business area responsible for the products. Model validation covers both qualitative and quantitative elements relating to new models. In respect of new products, a product implementation review is conducted pre- and post-trading. Pre-trade testing ensures that the new model is integrated into the Group’s systems and that the profit and loss and risk reporting are consistent throughout the trade life cycle. Post-trade testing examines the explanatory power of the implemented model, actively monitoring model parameters and comparing in-house pricing to external sources. Independent price verification procedures cover financial instruments carried at fair value. The frequency of the review is matched to the availability of independent data, monthly being the minimum. Valuation differences in breach of established thresholds are escalated to senior management. The results from independent pricing and valuation reserves are reviewed monthly by senior management. Formal committees, consisting of senior risk, finance and business management, meet at least quarterly to discuss and approve valuations in more judgemental areas, in particular for unquoted equities, structured credit, over-the-counter options and the Credit Valuation Adjustment (CVA) reserve. Valuation of financial assets and liabilities Assets and liabilities carried at fair value or for which fair values are disclosed have been classified into three levels according to the quality and reliability of information used to determine the fair values. Level 1 Level 1 fair value measurements are those derived from unadjusted quoted prices in active markets for identical assets or liabilities. Products classified as level 1 predominantly comprise equity shares, treasury bills and other government securities. Level 2 Level 2 valuations are those where quoted market prices are not available, for example where the instrument is traded in a market that is not considered to be active or valuation techniques are used to determine fair value and where these techniques use inputs that are based significantly on observable market data. Examples of such financial instruments include most over-the-counter derivatives, financial institution issued securities, certificates of deposit and certain asset-backed securities. Level 3 Level 3 portfolios are those where at least one input which could have a significant effect on the instrument’s valuation is not based on observable market data. Such instruments would include any unlisted equity investments which are valued using various valuation techniques that require significant management judgement in determining appropriate assumptions, including earnings multiples and estimated future cash flows. Certain of the Group’s asset-backed securities and derivatives, principally where there is no trading activity in such securities, are also classified as level 3. Transfers out of the level 3 portfolio arise when inputs that could have a significant impact on the instrument’s valuation become market observable after previously having been non-market observable. In the case of asset-backed securities this can arise if more than one consistent independent source of data becomes available. Conversely transfers into the portfolio arise when consistent sources of data cease to be available. (3) Financial assets and liabilities carried at fair value (A) Financial assets, excluding derivatives Valuation hierarchy At 31 December 2020, the Group’s financial assets carried at fair value, excluding derivatives, totalled £28,934 million (2019: £26,901 million). The table below analyses these financial assets by balance sheet classification, asset type and valuation methodology (level 1, 2 or 3, as described on page F-98). The fair value measurement approach is recurring in nature. There were no significant transfers between level 1 and 2 during the year. Valuation hierarchy Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2020 Financial assets at fair value through profit or loss Loans and advances to customers — — 1,511 1,511 Equity shares 159 4 — 163 Total financial assets at fair value through profit or loss 159 4 1,511 1,674 Financial assets at fair value through other comprehensive income Debt securities: Government securities 14,267 — — 14,267 Asset-backed securities — — 65 65 Corporate and other debt securities 491 12,437 — 12,928 14,758 12,437 65 27,260 Total financial assets at fair value through other comprehensive income 14,758 12,437 65 27,260 Total financial assets carried at fair value, excluding derivatives 14,917 12,441 1,576 28,934 Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2019 Financial assets at fair value through profit or loss Loans and advances to customers — — 1,782 1,782 Debt securities: Government securities 290 — — 290 Corporate and other debt securities — — 47 47 290 — 47 337 Equity shares 161 4 — 165 Total financial assets at fair value through profit or loss 451 4 1,829 2,284 Financial assets at fair value through other comprehensive income Debt securities: Government securities 12,844 238 — 13,082 Asset-backed securities — — 60 60 Corporate and other debt securities — 11,036 — 11,036 12,844 11,274 60 24,178 Treasury and other bills 439 — — 439 Total financial assets at fair value through other comprehensive income 13,283 11,274 60 24,617 Total financial assets carried at fair value, excluding derivatives 13,734 11,278 1,889 26,901 Valuation hierarchy Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2020 Financial assets at fair value through profit or loss Loans and advances to customers — — 517 517 Debt securities: Government securities — — — — Corporate and other debt securities — 1,203 — 1,203 — 1,203 — 1,203 Equity shares — 4 — 4 Total financial assets at fair value through profit or loss — 1,207 517 1,724 Financial assets at fair value through other comprehensive income Debt securities: Government securities 14,114 — — 14,114 Corporate and other debt securities 491 10,042 — 10,533 14,605 10,042 — 24,647 Total financial assets at fair value through other comprehensive income 14,605 10,042 — 24,647 Total financial assets carried at fair value, excluding derivatives 14,605 11,249 517 26,371 Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2019 Financial assets at fair value through profit or loss Loans and advances to customers — — 362 362 Debt securities: Government securities 290 — — 290 Corporate and other debt securities — — 47 47 290 — 47 337 Equity shares — 4 — 4 Total financial assets at fair value through profit or loss 290 4 409 703 Financial assets at fair value through other comprehensive income Debt securities: Government securities 12,700 238 — 12,938 Corporate and other debt securities — 8,783 — 8,783 12,700 9,021 — 21,721 Treasury and other bills 439 — — 439 Total financial assets at fair value through other comprehensive income 13,139 9,021 — 22,160 Total financial assets carried at fair value, excluding derivatives 13,429 9,025 409 22,863 Movements in level 3 portfolio The table below analyses movements in level 3 financial assets, excluding derivatives, carried at fair value (recurring measurement). 2020 2019 Financial Financial Total level 3 Financial Financial Total level 3 The Group £m £m £m £m £m £m At 1 January 1,829 60 1,889 2,721 53 2,774 Exchange and other adjustments 85 3 88 (74) (3) (77) Gains recognised in the income statement within other income 20 — 20 4 — 4 Gains recognised in other comprehensive income within the revaluation reserve in respect of financial assets at fair value through other comprehensive income — 4 4 — 11 11 Purchases/increases to customer loans 303 — 303 686 — 686 Sales/repayments of customer loans (677) (2) (679) (1,956) (1) (1,957) Transfers into the level 3 portfolio — — — 448 — 448 Transfers out of the level 3 portfolio (49) — (49) — — — At 31 December 1,511 65 1,576 1,829 60 1,889 Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December 103 — 103 (76) — (76) 2020 2019 Financial Financial Total level 3 Financial Financial Total level 3 The Bank £m £m £m £m £m £m At 1 January 409 — 409 890 — 890 Exchange and other adjustments 101 — 101 (28) — (28) Gains recognised in the income statement within other income 5 — 5 — — — Purchases/increases to customer loans 258 — 258 101 — 101 Sales/repayments of customer loans (207) — (207) (603) — (603) Transfers into the level 3 portfolio — — — 49 — 49 Transfers out of the level 3 portfolio (49) — (49) — — — At 31 December 517 — 517 409 — 409 Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December 106 — 106 (28) — (28) Valuation methodology for financial assets, excluding derivatives Loans and advances to customers and banks The fair value of these assets is determined using discounted cash flow techniques. The discount rates are derived from market observable interest rates, a risk margin that reflects loan credit ratings and an incremental illiquidity premium based on historical spreads at origination on similar loans. Debt securities Debt securities measured at fair value and classified as level 2 are valued by discounting expected cash flows using an observable credit spread applicable to the particular instrument. Where there is limited trading activity in debt securities, the Group uses valuation models, consensus pricing information from third party pricing services and broker or lead manager quotes to determine an appropriate valuation. Debt securities are classified as level 3 if there is a significant valuation input that cannot be corroborated through market sources or where there are materially inconsistent values for an input. Asset classes classified as level 3 mainly comprise certain collateralised loan obligations and collateralised debt obligations. (B) Financial liabilities, excluding derivatives Valuation hierarchy At 31 December 2020, the Group’s financial liabilities carried at fair value, excluding derivatives, comprised its financial liabilities at fair value through profit or loss and totalled £6,831 million (2019: £7,702 million). The table below analyses these financial liabilities by balance sheet classification and valuation methodology (level 1, 2 or 3, as described on page F-98). The fair value measurement approach is recurring in nature. There were no significant transfers between level 1 and 2 during the year. Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2020 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 6,783 45 6,828 Trading liabilities: Other deposits — 2 — 2 Short positions in securities 1 — — 1 1 2 — 3 Total financial liabilities carried at fair value, excluding derivatives 1 6,785 45 6,831 Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2019 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 7,484 47 7,531 Trading liabilities: Other deposits — 98 — 98 Short positions in securities 73 — — 73 73 98 — 171 Total financial liabilities carried at fair value, excluding derivatives 73 7,582 47 7,702 Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2020 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 7,905 — 7,905 Trading liabilities: Other deposits — 2 — 2 Short positions in securities — — — — — 2 — 2 Total financial liabilities carried at fair value, excluding derivatives — 7,907 — 7,907 Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2019 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 7,484 — 7,484 Trading liabilities: Other deposits — 140 — 140 Short positions in securities 73 — — 73 73 140 — 213 Total financial liabilities carried at fair value, excluding derivatives 73 7,624 — 7,697 The table below analyses movements in the level 3 financial liabilities portfolio, excluding derivatives. 2020 2019 The Group £m £m At 1 January 47 — Gains recognised in the income statement within other income — 1 Redemptions (2) (5) Transfers into the level 3 portfolio — 51 Transfers out of the level 3 portfolio — — At 31 December 45 47 Gains recognised in the income statement, within other income, relating to the change in fair value of those liabilities held at 31 December — — Valuation methodology for financial liabilities, excluding derivatives Liabilities held at fair value through profit or loss These principally comprise debt securities in issue which are classified as level 2 and their fair value is determined using techniques whose inputs are based on observable market data. The carrying amount of the securities is adjusted to reflect the effect of changes in own credit spreads and the resulting gain or loss is recognised in other comprehensive income. At 31 December 2020, the own credit adjustment arising from the fair valuation of £6,828 million (2019: £7,531 million) of the Group’s debt securities in issue designated at fair value through profit or loss resulted in a loss of £75 million (2019: loss of £419 million), before tax, recognised in other comprehensive income. Trading liabilities in respect of securities sold under repurchase agreements The fair value of these liabilities is determined using discounted cash flow techniques. The discount rates are derived from observable repo curves specific to the type of security sold under the repurchase agreement. (C) Derivatives All of the Group’s derivative assets and liabilities are carried at fair value. At 31 December 2020, such assets totalled £8,341 million for the Group and £12,595 million for the Bank (2019: £8,494 million for the Group and £13,638 million for the Bank) and liabilities totalled £8,228 million for the Group and £11,072 million for the Bank (2019: £9,831 million for the Group and £14,211 million for the Bank). The table below analyses these derivative balances by valuation methodology (level 1, 2 or 3, as described on page F-98). The fair value measurement approach is recurring in nature. There were no significant transfers between level 1 and level 2 during the year. 2020 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total The Group £m £m £m £m £m £m £m £m Derivative assets — 8,327 14 8,341 — 8,494 — 8,494 Derivative liabilities — (7,909) (319) (8,228) — (9,534) (297) (9,831) 2020 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total The Bank £m £m £m £m £m £m £m £m Derivative assets — 12,581 14 12,595 — 13,638 — 13,638 Derivative liabilities — (11,012) (60) (11,072) — (14,211) — (14,211) Where the Group’s derivative assets and liabilities are not traded on an exchange, they are valued using valuation techniques, including discounted cash flow and options pricing models, as appropriate. The types of derivatives classified as level 2 and the valuation techniques used include: – Interest rate swaps which are valued using discounted cash flow models; the most significant inputs into those models are interest rate yield curves which are developed from publicly quoted rates. – Foreign exchange derivatives that do not contain options which are priced using rates available from publicly quoted sources. – Credit derivatives which are valued using standard models with observable inputs, except for the items classified as level 3, which are valued using publicly available yield and credit default swap (CDS) curves. – Less complex interest rate and foreign exchange option products which are valued using volatility surfaces developed from publicly available interest rate cap, interest rate swaption and other option volatilities; option volatility skew information is derived from a market standard consensus pricing service. For more complex option products, the Group calibrates its models using observable at-the-money data; where necessary, the Group adjusts for out-of-the-money positions using a market standard consensus pricing service. Complex interest rate and foreign exchange products where inputs to the valuation are significant and unobservable are classified as level 3. Where credit protection, usually in the form of credit default swaps, has been purchased or written on asset-backed securities, the security is referred to as a negative basis asset-backed security and the resulting derivative assets or liabilities have been classified as either level 2 or level 3 according to the classification of the underlying asset-backed security. Certain unobservable inputs used to calculate CVA, FVA, and own credit adjustments, are not significant in determining the classification of the derivative and debt instruments. Consequently, these inputs do not form part of the level 3 sensitivities presented. The table below analyses movements in level 3 derivative assets and liabilities carried at fair value. 2020 2019 Derivative Derivative Derivative Derivative The Group £m £m £m £m At 1 January — (297) 5 (8) Exchange and other adjustments — — — — Losses (gains) recognised in the income statement within other income 1 — — — (Sales) redemptions — 19 — 47 Transfers into the level 3 portfolio 13 (41) — (344) Transfers out of the level 3 portfolio — — (5) 8 At 31 December 14 (319) — (297) Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets or liabilities held at 31 December 1 — — — 2020 2019 Derivative Derivative Derivative Derivative The Bank £m £m £m £m At 1 January — — 5 (8) Exchange and other adjustments — — — — Losses (gains) recognised in the income statement within other income 1 (8) — — (Sales) redemptions — — — — Transfers into the level 3 portfolio 13 (52) — — Transfers out of the level 3 portfolio — — (5) 8 At 31 December 14 (60) — — Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets or liabilities held at 31 December 1 (8) — — Derivative valuation adjustments Derivative financial instruments which are carried in the balance sheet at fair value are adjusted where appropriate to reflect credit risk, market liquidity and other risks. (i) Uncollateralised derivative valuation adjustments The following table summarises the movement on this valuation adjustment account for the Group during 2019 and 2020: 2020 2019 £m £m At 1 January 214 272 Income statement charge (credit) 28 (56) Transfers — (2) At 31 December 242 214 Represented by: 2020 2019 £m £m Credit Valuation Adjustment 178 141 Debit Valuation Adjustment (6) (5) Funding Valuation Adjustment 70 78 242 214 Credit and Debit Valuation Adjustments (CVA and DVA) are applied to the Group’s over-the-counter derivative exposures with counterparties that are not subject to strong interbank collateral arrangements. These exposures largely relate to the provision of risk management solutions for corporate customers within the Commercial Banking division. A CVA is taken where the Group has a positive future uncollateralised exposure (asset). A DVA is taken where the Group has a negative future uncollateralised exposure (liability). These adjustments reflect interest rates and expectations of counterparty creditworthiness and the Group’s own credit spread respectively. The CVA is sensitive to: – the current size of the mark-to-market position on the uncollateralised asset; – expectations of future market volatility of the underlying asset; and – expectations of counterparty creditworthiness. Market Credit Default Swap (CDS) spreads are used to develop the probability of default for quoted counterparties. For unquoted counterparties, internal credit ratings and market sector CDS curves and recovery rates are used. The Loss Given Default (LGD) is based on market recovery rates and internal credit assessments. The combination of a one notch deterioration in the credit rating of derivative counterparties and a ten per cent increase in LGD increases the CVA by £46 million. Current market value is used to estimate the projected exposure for products not supported by the model, which are principally complex interest rate options that are traded in very low volumes. For these, the CVA is calculated on an add-on basis (although no such adjustment was required at 31 December 2020). The DVA is sensitive to: – the current size of the mark-to-market position on the uncollateralised liability; – expectations of future market volatility of the underlying liability; and – the Group’s own CDS spread. A one per cent rise in the CDS spread would lead to an increase in the DVA of £14 million. The risk exposures that are used for the CVA and DVA calculations are strongly influenced by interest rates. Due to the nature of the Group’s business the CVA/DVA exposures tend to be on average the same way around such that the valuation adjustments fall when interest rates rise. A one per cent rise in interest rates would lead to a £56 million fall in the overall valuation adjustment to £116 million. The CVA model used by the Group does not assume any correlation between the level of interest rates and default rates. The Group has also recognised a Funding Valuation Adjustment to adjust for the net cost of funding uncollateralised derivative positions. This adjustment is calculated on the expected future exposure discounted at a suitable cost of funds. A ten basis points increase in the cost of funds will increase the funding valuation adjustment by approximately £12 million. (ii) Market liquidity The Group includes mid to bid-offer valuation adjustments against the expected cost of closing out the net market risk in the Group’s trading positions within a timeframe that is consistent with historical trading activity and spreads that the trading desks have accessed historically during the ordinary course of business in normal market conditions. At 31 December 2020, the Group’s derivative trading business held mid to bid-offer valuation adjustments of £26 million (2019: £20 million). (D) Sensitivity of level 3 valuations At 31 December 2020 At 31 December 2019 Effect of reasonably possible alternative assumptions 2 Effect of reasonably possible alternative assumptions 2 Valuation Significant 1 Carrying Favourable Unfavourable Carrying Favourable Unfavourable £m £m £m £m £m £m Financial assets at fair value through profit or loss: Loans and advances to customers Discounted cash flows Interest rate spreads (bps) (-50bps/+106bps) 3 1,511 47 (45) 1,782 36 (39) Debt securities Discounted cash flows Credit spreads 4 — — — 47 — — 1,511 1,829 Financial assets at fair value through other comprehensive income Asset-backed securities Lead manager or broker quote/consensus pricing n/a 65 4 (4) 60 4 (4) 65 60 Derivative financial assets Interest rate derivatives Option pricing model Interest rate volatility (13%/128%) 14 — — — — — 14 — Level 3 financial assets carried at fair value 1,590 1,889 Financial liabilities at fair value through profit or loss Discounted cash flows Interest rate spreads (+/-50bps) 5 45 1 (1) 47 1 (1) Derivative financial liabilities Interest rate derivatives Option pricing model Interest rate volatility (33%/60%) 48 — — — — — Shared appreciation right Market values – property valuation HPI (+/-1%) 6 271 24 (22) 297 17 (17) 319 297 Level 3 financial liabilities carried at fair value 364 344 1 Ranges are shown where appropriate and represent the highest and lowest inputs used in the level 3 valuations. 2 Where the exposure to an unobservable input is managed on a net basis, only the net impact is shown in the table. 3 2019: 50bps/102bps 4 2019:+/- 3% 5 2019:+/- 50bps 6 2019:+/- 5% Unobservable inputs Significant unobservable inputs affecting the valuation of debt securities and derivatives are as follows: – Interest rates and inflation rates are referenced in some derivatives where the payoff that the holder of the derivative

TRANSFERS OF FINANCIAL ASSETS

TRANSFERS OF FINANCIAL ASSETS	12 Months Ended
	Dec. 31, 2020
Disclosure of transferred financial assets that are not derecognised in their entirety [text block] [Abstract]
TRANSFERS OF FINANCIAL ASSETS	43 TRANSFERS OF FINANCIAL ASSETS There were no significant transferred financial assets which were derecognised in their entirety, but with ongoing exposure. Details of transferred financial assets that continue to be recognised in full are as follows. The Group and the Bank enter into repurchase and securities lending transactions in the normal course of business that do not result in derecognition of the financial assets as substantially all of the risks and rewards, including credit, interest rate, prepayment and other price risks are retained by the Group. In all cases, the transferee has the right to sell or repledge the assets concerned. As set out in note 26, included within financial assets measured at amortised cost are loans transferred under the Group’s securitisation and covered bond programmes. As the Group retains all or a majority of the risks and rewards associated with these loans, including credit, interest rate, prepayment and liquidity risk, they remain on the Group’s balance sheet. Assets transferred into the Group’s securitisation and covered bond programmes are not available to be used by the Group whilst the assets are within the programmes. However, the Group retains the right to remove loans from the covered bond programmes where they are in excess of the programme’s requirements. In addition, where the Group has retained some of the notes issued by securitisation and covered bond programmes, the Group has the ability to sell or pledge these retained notes. The table below sets out the carrying values of the transferred assets and the associated liabilities. For repurchase and securities lending transactions, the associated liabilities represent the Group’s obligation to repurchase the transferred assets. For securitisation programmes, the associated liabilities represent the external notes in issue (note 26). Except as otherwise noted below, none of the liabilities shown in the table below have recourse only to the transferred assets. The Group The Bank Carrying Carrying Carrying Carrying £m £m £m £m At 31 December 2020 Repurchase and securities lending transactions Financial assets at fair value through profit or loss — — 3,244 1,869 Financial assets at fair value through other comprehensive income 7,475 5,105 4,889 3,895 Securitisation programmes Financial assets at amortised cost: Loans and advances to customers 1,2 34,584 4,481 4,072 — The Group The Bank Carrying Carrying Carrying Carrying £m £m £m £m At 31 December 2019 Repurchase and securities lending transactions Financial assets at fair value through profit or loss 3,123 2,668 655 21 Financial assets at fair value through other comprehensive income 5,436 4,560 7,552 6,065 Securitisation programmes Financial assets at amortised cost: Loans and advances to customers 1,2 42,545 7,376 6,433 — 1 The carrying value of associated liabilities for the Group excludes securitisation notes held by the Group of £27,418 million (31 December 2019: £31,396 million). 2 The carrying value of transferred assets for the Bank includes amounts relating to assets transferred to structured entities which are fully consolidated into the Group. The liabilities associated with such assets are issued by the structured entities.

OFFSETTING OF FINANCIAL ASSETS

OFFSETTING OF FINANCIAL ASSETS AND LIABILITIES	12 Months Ended
	Dec. 31, 2020
Disclosure of offsetting of financial assets and financial liabilities [text block] [Abstract]
OFFSETTING OF FINANCIAL ASSETS AND LIABILITIES	44 OFFSETTING OF FINANCIAL ASSETS AND LIABILITIES The following information relates to financial assets and liabilities which have been offset in the balance sheet and those which have not been offset but for which the Group has enforceable master netting agreements or collateral arrangements in place with counterparties. Related amounts where set off in 3 Potential Gross amounts 1 Amount offset 2 Net amounts Cash Non-cash At 31 December 2020 £m £m £m £m £m £m Financial assets Financial assets at fair value through profit or loss: Excluding reverse repos 1,674 — 1,674 — — 1,674 Reverse repos — — — — — — 1,674 — 1,674 — — 1,674 Derivative financial instruments 67,428 (59,087) 8,341 (2,702) (3,555) 2,084 Loans and advances to banks: Excluding reverse repos 4,324 — 4,324 (1,023) — 3,301 Reverse repos 1,634 (8) 1,626 — (1,626) — 5,958 (8) 5,950 (1,023) (1,626) 3,301 Loans and advances to customers: Excluding reverse repos 426,104 (410) 425,694 (837) (2,762) 422,095 Reverse repos 59,856 (5,409) 54,447 — (54,447) — 485,960 (5,819) 480,141 (837) (57,209) 422,095 Debt securities 5,137 — 5,137 — — 5,137 Financial assets at fair value through other comprehensive income 27,260 — 27,260 — (5,132) 22,128 Financial liabilities Deposits from banks: Excluding repos 6,230 — 6,230 (2,351) — 3,879 Repos 18,775 (8) 18,767 — (18,767) — 25,005 (8) 24,997 (2,351) (18,767) 3,879 Customer deposits: Excluding repos 426,874 (1,722) 425,152 (350) (2,762) 422,040 Repos 14,826 (5,409) 9,417 — (9,417) — 441,700 (7,131) 434,569 (350) (12,179) 422,040 Financial liabilities at fair value through profit or loss: Excluding repos 6,831 — 6,831 — — 6,831 Repos — — — — — — 6,831 — 6,831 — — 6,831 Derivative financial instruments 66,003 (57,775) 8,228 (1,860) (4,849) 1,519 Related amounts where set off in 3 Potential Gross amounts 1 Amount offset 2 Net amounts Cash Non-cash At 31 December 2019 £m £m £m £m £m £m Financial assets Financial assets at fair value through profit or loss: Excluding reverse repos 2,284 — 2,284 — (21) 2,263 Reverse repos — — — — — — 2,284 — 2,284 — (21) 2,263 Derivative financial instruments 61,860 (53,366) 8,494 (2,186) (4,177) 2,131 Loans and advances to banks: Excluding reverse repos 4,444 — 4,444 (1,288) (2,792) 364 Reverse repos 408 — 408 — (408) — 4,852 — 4,852 (1,288) (3,200) 364 Loans and advances to customers: Excluding reverse repos 422,846 — 422,846 (879) — 421,967 Reverse repos 56,089 (4,465) 51,624 — (51,624) — 478,935 (4,465) 474,470 (879) (51,624) 421,967 Debt securities 5,325 — 5,325 — (211) 5,114 Financial assets at fair value through other comprehensive income 24,617 — 24,617 — (5,948) 18,669 Financial liabilities Deposits from banks: Excluding repos 5,488 — 5,488 (1,684) — 3,804 Repos 18,105 — 18,105 — (18,105) — 23,593 — 23,593 (1,684) (18,105) 3,804 Customer deposits: Excluding repos 389,178 (1,869) 387,309 (501) (2,792) 384,016 Repos 9,530 — 9,530 — (9,530) — 398,708 (1,869) 396,839 (501) (12,322) 384,016 Financial liabilities at fair value through profit or loss: Excluding repos 7,702 — 7,702 — — 7,702 Repos 4,465 (4,465) — — — — 12,167 (4,465) 7,702 — — 7,702 Derivative financial instruments 61,328 (51,497) 9,831 (2,168) (5,020) 2,643 1 After impairment allowance. 2 The amounts offset in the balance sheet as shown above represent derivatives and repurchase agreements with central clearing houses which meet the criteria for offsetting under IAS 32. 3 The Group enters into derivatives and repurchase and reverse repurchase agreements with various counterparties which are governed by industry standard master netting agreements. The Group holds and provides cash and securities collateral in respective of derivative transactions covered by these agreements. The right to set off balances under these master netting agreements or to set off cash and securities collateral only arises in the event of non-payment or default and, as a result, these arrangements do not qualify for offsetting under IAS 32. The effects of over collateralisation have not been taken into account in the above table.

FINANCIAL RISK MANAGEMENT

FINANCIAL RISK MANAGEMENT	12 Months Ended
	Dec. 31, 2020
Disclosure of financial risk management [text block] [Abstract]
FINANCIAL RISK MANAGEMENT	45 FINANCIAL RISK MANAGEMENT Financial instruments are fundamental to the Group’s activities and, as a consequence, the risks associated with financial instruments represent a significant component of the risks faced by the Group. The primary risks affecting the Group through its use of financial instruments are: credit risk; market risk, which includes interest rate risk and foreign exchange risk; liquidity risk and capital risk. Information about the Group’s exposure to each of the above risks and its capital can be found on pages 24 to 74. The following additional disclosures, which provide its quantitative information about the risks within financial instruments held or issued by the Group, should be read in conjunction with that earlier information. (1) Credit risk The Group’s credit risk exposure arises in respect of the instruments below and predominantly in the United Kingdom. Credit risk appetite is set at Board level and is described and reported through a suite of metrics devised from a combination of accounting and credit portfolio performance measures, which include the use of various credit risk rating systems as inputs and measure the credit risk of loans and advances to customers and banks at a counterparty level using three components: (i) the probability of default by the counterparty on its contractual obligations; (ii) the current exposures to the counterparty and their likely future development, from which the Group derives the exposure at default; and (iii) the likely loss ratio on the defaulted obligations, the loss given default. The Group uses a range of approaches to mitigate credit risk, including internal control policies, obtaining collateral, using master netting agreements and other credit risk transfers, such as asset sales and credit derivative based transactions. A. Maximum credit exposure The maximum credit risk exposure of the Group and the Bank in the event of other parties failing to perform their obligations is detailed below. No account is taken of any collateral held and the maximum exposure to loss is considered to be the balance sheet carrying amount or, for non-derivative off-balance sheet transactions and financial guarantees, their contractual nominal amounts. The Group 2020 2019 Maximum Offset 1 Net Maximum Offset 1 Net £m £m £m £m £m £m Loans and advances to banks, net 2 5,950 — 5,950 4,852 — 4,852 Loans and advances to customers, net 2 480,141 (2,762) 477,379 474,470 (2,792) 471,678 Debt securities, net 2 5,137 — 5,137 5,325 — 5,325 Financial assets at amortised cost 491,228 (2,762) 488,466 484,647 (2,792) 481,855 Financial assets at fair value through other comprehensive income 27,260 — 27,260 24,617 — 24,617 Financial assets at fair value through profit or loss 3 : Loans and advances 1,511 — 1,511 1,782 — 1,782 Debt securities, treasury and other bills — — — 337 — 337 1,511 — 1,511 2,119 — 2,119 Derivative assets 8,341 (3,373) 4,968 8,494 (4,177) 4,317 Off-balance sheet items: Acceptances and endorsements 73 — 73 17 — 17 Other items serving as direct credit substitutes 221 — 221 279 — 279 Performance bonds, including letters of credit, and other transaction-related contingencies 2,070 — 2,070 2,274 — 2,274 Irrevocable commitments and guarantees 59,240 — 59,240 46,629 — 46,629 61,604 — 61,604 49,199 — 49,199 589,944 (6,135) 583,809 569,076 (6,969) 562,107 The Bank 2020 2019 Maximum Offset 1 Net Maximum Offset 1 Net £m £m £m £m £m £m Loans and advances to banks, net 2 5,656 — 5,656 4,453 — 4,453 Loans and advances to customers, net 2 178,269 (2,156) 176,113 177,569 (2,123) 175,446 Debt securities, net 2 4,315 — 4,315 5,241 — 5,241 Financial assets at amortised cost 188,240 (2,156) 186,084 187,263 (2,123) 185,140 Financial assets at fair value through other comprehensive income 24,647 — 24,647 22,160 — 22,160 Financial assets at fair value through profit or loss 3 : Loans and advances 517 — 517 362 — 362 Debt securities, treasury and other bills 1,203 — 1,203 337 — 337 1,720 — 1,720 699 — 699 Derivative assets 12,595 (2,752) 9,843 13,638 (3,312) 10,326 Off-balance sheet items: Acceptances and endorsements 73 — 73 16 — 16 Other items serving as direct credit substitutes 203 — 203 259 — 259 Performance bonds, including letters of credit, and other transaction-related contingencies 1,817 — 1,817 2,014 — 2,014 Irrevocable commitments and guarantees 32,847 — 32,847 27,672 — 27,672 34,940 — 34,940 29,961 — 29,961 262,142 (4,908) 257,234 253,721 (5,435) 248,286 1 Offset items comprise deposit amounts available for offset, and amounts available for offset under master netting arrangements, that do not meet the criteria under IAS 32 to enable loans and advances and derivative assets respectively to be presented net of these balances in the financial statements. 2 Amounts shown net of related impairment allowances. 3 Excluding equity shares. B. Concentrations of exposure The Group’s management of concentration risk includes single name, industry sector and country limits as well as controls over the Group’s overall exposure to certain products. At 31 December 2020 the most significant concentrations of exposure were in mortgages (comprising 63 per cent of total loans and advances to customers) and to financial, business and other services (comprising 16 per cent of the total). Loans and advances to customers The Group The Bank 2020 2019 2020 2019 £m £m £m £m Agriculture, forestry and fishing 7,835 7,557 3,039 2,949 Energy and water supply 1,274 1,423 1,189 1,328 Manufacturing 4,455 4,869 3,770 3,811 Construction 5,046 4,190 4,022 3,255 Transport, distribution and hotels 14,229 12,657 10,160 8,350 Postal and telecommunications 2,261 1,679 1,689 1,130 Property companies 25,092 26,736 21,629 22,982 Financial, business and other services 77,271 73,087 73,987 68,461 Personal: Mortgages 1 305,966 298,294 49,574 52,341 Other 25,295 29,165 8,502 10,060 Lease financing 1,047 1,536 30 93 Hire purchase 16,071 16,440 2,959 3,982 Total loans and advances to customers before allowance for impairment losses 485,842 477,633 180,550 178,742 Allowance for impairment losses (note 16) (5,701) (3,163) (2,281) (1,173) Total loans and advances to customers 480,141 474,470 178,269 177,569 1 Includes both UK and overseas mortgage balances. The Group’s operations are predominantly UK-based and as a result an analysis of credit risk exposures by geographical region is not provided. C. Credit quality of assets Loans and advances The analysis of lending has been prepared based on the division in which the asset is held; with the business segment in which the exposure is recorded reflected in the ratings system applied. The internal credit ratings systems used by the Group differ between Retail and Commercial, reflecting the characteristics of these exposures and the way that they are managed internally; these credit ratings are set out below. All probabilities of default (PDs) include forward-looking information and are based on 12 month values, with the exception of credit impaired. Retail Commercial Quality classification IFRS 9 PD range Quality classification IFRS 9 PD range RMS 1-6 0.00-4.50% CMS 1-10 0.00-0.50% RMS 7-9 4.51-14.00% CMS 11-14 0.51-3.00% RMS 10 14.01-20.00% CMS 15-18 3.01-20.00% RMS 11-13 20.01-99.99% CMS 19 20.01-99.99% RMS 14 100% CMS 20-23 100% Stage 3 assets of the Group include balances of £179 million (2019: £205 million) (with outstanding amounts due of £732 million (2019: £1,700 million)) which have been subject to a partial write-off and where the Group continues to enforce recovery action. Stage 2 and Stage 3 assets of the Group with a carrying amount of £22,200 million (2019: £219 million) were modified during the year. No material gain or loss was recognised by the Group. As at 31 December 2020 and 2019, assets that had been previously modified whilst classified as Stage 2 or Stage 3 and were classified as Stage 1 were not material. Drawn exposures Expected credit loss allowance The Group - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to banks: CMS 1-10 5,951 — — — 5,951 4 — — — 4 CMS 11-14 3 — — — 3 — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 5,954 — — — 5,954 4 — — — 4 Loans and advances to customers: Retail - UK mortgages RMS 1-6 251,372 21,010 — — 272,382 103 247 — — 350 RMS 7-9 46 4,030 — — 4,076 1 66 — — 67 RMS 10 — 907 — — 907 — 25 — — 25 RMS 11-13 — 3,071 — — 3,071 — 130 — — 130 RMS 14 — — 1,859 12,511 14,370 — — 191 261 452 251,418 29,018 1,859 12,511 294,806 104 468 191 261 1,024 Retail - credit cards RMS 1-6 9,619 1,284 — — 10,903 75 57 — — 132 RMS 7-9 1,603 1,137 — — 2,740 66 138 — — 204 RMS 10 274 343 — — 617 14 70 — — 84 RMS 11-13 — 509 — — 509 — 193 — — 193 RMS 14 — — 340 — 340 — — 153 — 153 11,496 3,273 340 — 15,109 155 458 153 — 766 Retail - loans and overdrafts RMS 1-6 5,559 291 — — 5,850 80 15 — — 95 RMS 7-9 1,990 580 — — 2,570 99 66 — — 165 RMS 10 116 181 — — 297 13 36 — — 49 RMS 11-13 45 467 — — 512 9 178 — — 187 RMS 14 — — 307 — 307 — — 147 — 147 7,710 1,519 307 — 9,536 201 295 147 — 643 Retail - UK Motor Finance RMS 1-6 12,035 1,396 — — 13,431 187 46 — — 233 RMS 7-9 738 456 — — 1,194 7 33 — — 40 RMS 10 — 171 — — 171 — 30 — — 30 RMS 11-13 13 193 — — 206 — 62 — — 62 RMS 14 — — 199 — 199 — — 133 — 133 12,786 2,216 199 — 15,201 194 171 133 — 498 Retail - other RMS 1-6 14,952 482 — — 15,434 19 19 — — 38 RMS 7-9 2,418 334 — — 2,752 11 39 — — 50 RMS 10 — 21 — — 21 — 1 — — 1 RMS 11-13 509 467 — — 976 — 40 — — 40 RMS 14 — — 184 — 184 — — 59 — 59 17,879 1,304 184 — 19,367 30 99 59 — 188 Total Retail 301,289 37,330 2,889 12,511 354,019 684 1,491 683 261 3,119 The Group - Gross drawn exposures and expected credit loss allowances continued Drawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 22,218 177 — — 22,395 23 2 — — 25 CMS 11-14 30,023 6,662 — — 36,685 135 106 — — 241 CMS 15-18 4,656 6,430 — — 11,086 96 397 — — 493 CMS 19 — 669 — — 669 — 129 — — 129 CMS 20-23 — — 3,485 — 3,485 — — 1,273 — 1,273 56,897 13,938 3,485 — 74,320 254 634 1,273 — 2,161 Other RMS 1-6 822 12 — — 834 9 — — — 9 RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 59 — 59 — — 12 — 12 822 12 59 — 893 9 — 12 — 21 CMS 1-10 56,362 — — — 56,362 — — — — — CMS 11-14 236 — — — 236 — — — — — CMS 15-18 — — — — — — — — — — CMS 19 2 — — — 2 — — — — — CMS 20-23 — — 10 — 10 — — — — — 56,600 — 10 — 56,610 — — — — — Central overlay — — — — — 400 — — — 400 Total loans and advances to customers 415,608 51,280 6,443 12,511 485,842 1,347 2,125 1,968 261 5,701 In respect of: Retail 301,289 37,330 2,889 12,511 354,019 684 1,491 683 261 3,119 Commercial 56,897 13,938 3,485 — 74,320 254 634 1,273 — 2,161 Other 1 57,422 12 69 — 57,503 409 — 12 — 421 Total loans and advances to customers 415,608 51,280 6,443 12,511 485,842 1,347 2,125 1,968 261 5,701 1 Principally comprises reverse repurchase agreement balances. The Group - Gross undrawn exposures and expected credit loss allowances Undrawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to customers: Retail - UK mortgages RMS 1-6 19,347 109 — — 19,456 3 — — — 3 RMS 7-9 1 6 — — 7 — — — — — RMS 10 — 2 — — 2 — — — — — RMS 11-13 — 1 — — 1 — — — — — RMS 14 — — 10 74 84 — — — — — 19,348 118 10 74 19,550 3 — — — 3 Retail - credit cards RMS 1-6 54,694 3,044 — — 57,738 67 46 — — 113 RMS 7-9 772 463 — — 1,235 11 8 — — 19 RMS 10 602 282 — — 884 7 11 — — 18 RMS 11-13 — 85 — — 85 — 7 — — 7 RMS 14 — — 56 — 56 — — — — — 56,068 3,874 56 — 59,998 85 72 — — 157 Retail - loans and overdrafts RMS 1-6 6,070 315 — — 6,385 14 7 — — 21 RMS 7-9 269 139 — — 408 8 14 — — 22 RMS 10 13 35 — — 48 1 7 — — 8 RMS 11-13 3 69 — — 72 — 21 — — 21 RMS 14 — — 18 — 18 — — — — — 6,355 558 18 — 6,931 23 49 — — 72 Retail - UK Motor Finance RMS 1-6 1,275 — — — 1,275 2 — — — 2 RMS 7-9 381 3 — — 384 1 — — — 1 RMS 10 — — — — — — — — — — RMS 11-13 1 — — — 1 — — — — — RMS 14 — — — — — — — — — — 1,657 3 — — 1,660 3 — — — 3 Retail - other RMS 1-6 1,672 23 — — 1,695 7 5 — — 12 RMS 7-9 140 36 — — 176 9 13 — — 22 RMS 10 — — — — — — — — — — RMS 11-13 — 10 — — 10 — 7 — — 7 RMS 14 — — 1 — 1 — — — — — 1,812 69 1 — 1,882 16 25 — — 41 Total Retail 85,240 4,622 85 74 90,021 130 146 — — 276 The Group - Gross undrawn exposures and expected credit loss allowances continued Undrawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 29,039 — — — 29,039 13 — — — 13 CMS 11-14 9,612 1,614 — — 11,226 31 16 — — 47 CMS 15-18 934 1,291 — — 2,225 16 47 — — 63 CMS 19 — 92 — — 92 — 12 — — 12 CMS 20-23 — — 195 — 195 — — 14 — 14 39,585 2,997 195 — 42,777 60 75 14 — 149 Other RMS 1-6 299 — — — 299 1 — — — 1 RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — — — — — — — — — 299 — — — 299 1 — — — 1 CMS 1-10 501 — — — 501 — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 501 — — — 501 — — — — — Total loans and advances to customers 125,625 7,619 280 74 133,598 191 221 14 — 426 In respect of: Retail 85,240 4,622 85 74 90,021 130 146 — — 276 Commercial 39,585 2,997 195 — 42,777 60 75 14 — 149 Other 800 — — — 800 1 — — — 1 Total loans and advances to customers 125,625 7,619 280 74 133,598 191 221 14 — 426 Drawn exposures Expected credit loss allowance The Group - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to banks: CMS 1-10 4,852 — — — 4,852 — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 4,852 — — — 4,852 — — — — — Loans and advances to customers: Retail - UK mortgages RMS 1-6 257,028 13,494 — — 270,522 23 183 — — 206 RMS 7-9 15 2,052 — — 2,067 — 39 — — 39 RMS 10 — 414 — — 414 — 13 — — 13 RMS 11-13 — 975 — — 975 — 46 — — 46 RMS 14 — — 1,506 13,714 15,220 — — 122 142 264 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Retail - credit cards RMS 1-6 14,744 729 — — 15,473 103 25 — — 128 RMS 7-9 1,355 556 — — 1,911 49 54 — — 103 RMS 10 32 105 — — 137 3 19 — — 22 RMS 11-13 1 291 — — 292 — 91 — — 91 RMS 14 — — 385 — 385 — — 125 — 125 16,132 1,681 385 — 18,198 155 189 125 — 469 Retail - loans and overdrafts RMS 1-6 7,406 368 — — 7,774 84 17 — — 101 RMS 7-9 1,321 363 — — 1,684 55 38 — — 93 RMS 10 44 85 — — 129 4 15 — — 19 RMS 11-13 17 315 — — 332 3 102 — — 105 RMS 14 — — 293 — 293 — — 108 — 108 8,788 1,131 293 — 10,212 146 172 108 — 426 Retail - UK Motor Finance RMS 1-6 13,568 1,297 — — 14,865 203 30 — — 233 RMS 7-9 314 368 — — 682 10 15 — — 25 RMS 10 — 99 — — 99 — 10 — — 10 RMS 11-13 2 178 — — 180 1 32 — — 33 RMS 14 — — 150 — 150 — — 84 — 84 13,884 1,942 150 — 15,976 214 87 84 — 385 Retail - other RMS 1-6 9,762 395 — — 10,157 25 10 — — 35 RMS 7-9 8 420 — — 428 — 26 — — 26 RMS 10 — 7 — — 7 — — — — — RMS 11-13 134 23 — — 157 — 1 — — 1 RMS 14 — — 150 — 150 — — 51 — 51 9,904 845 150 — 10,899 25 37 51 — 113 Total Retail 305,751 22,534 2,484 13,714 344,483 563 766 490 142 1,961 The Group - Gross drawn exposures and expected credit loss allowances continued Drawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 43,104 356 — — 43,460 27 2 — — 29 CMS 11-14 25,341 2,312 — — 27,653 50 37 — — 87 CMS 15-18 1,793 3,089 — — 4,882 13 171 — — 184 CMS 19 — 168 — — 168 — 16 — — 16 CMS 20-23 — — 3,135 — 3,135 — — 859 — 859 70,238 5,925 3,135 — 79,298 90 226 859 — 1,175 Other RMS 1-6 768 46 — — 814 16 1 — — 17 RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 28 — 28 — — 10 — 10 768 46 28 — 842 16 1 10 — 27 CMS 1-10 53,010 — — — 53,010 — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 53,010 — — — 53,010 — — — — — Total loans and advances to customers 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 In respect of: Retail 305,751 22,534 2,484 13,714 344,483 563 766 490 142 1,961 Commercial 70,238 5,925 3,135 — 79,298 90 226 859 — 1,175 Other 1 53,778 46 28 — 53,852 16 1 10 — 27 Total loans and advances to customers 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 1 Principally comprises reverse repurchase agreement balances. Undrawn exposures Expected credit loss allowance The Group - Gross undrawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to customers: Retail - UK mortgages RMS 1-6 12,242 62 — — 12,304 1 — — — 1 RMS 7-9 1 1 — — 2 — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 8 79 87 — — — — — 12,243 63 8 79 12,393 1 — — — 1 Retail - credit cards RMS 1-6 54,216 1,762 — — 55,978 44 21 — — 65 RMS 7-9 293 162 — — 455 4 3 — — 7 RMS 10 3 28 — — 31 — 1 — — 1 RMS 11-13 1 44 — — 45 — 4 — — 4 RMS 14 — — 75 — 75 — — — — — 54,513 1,996 75 — 56,584 48 29 — — 77 Retail - loans and overdrafts RMS 1-6 6,437 224 — — 6,661 12 3 — — 15 RMS 7-9 96 56 — — 152 2 5 — — 7 RMS 10 2 11 — — 13 — 2 — — 2 RMS 11-13 — 29 — — 29 — 11 — — 11 RMS 14 — — 8 — 8 — — — — — 6,535 320 8 — 6,863 14 21 — — 35 Retail - UK Motor Finance RMS 1-6 1,181 — — — 1,181 2 — — — 2 RMS 7-9 193 4 — — 197 — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — — — — — — — — — 1,374 4 — — 1,378 2 — — — 2 Retail - other RMS 1-6 1,240 — — — 1,240 11 — — — 11 RMS 7-9 — 62 — — 62 — 3 — — 3 RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 2 — 2 — — — — — 1,240 62 2 — 1,304 11 3 — — 14 Total Retail 75,905 2,445 93 79 78,522 76 53 — — 129 The Group - Gross undrawn exposures and expected credit loss allowances continued Undrawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 31,014 76 — — 31,090 7 — — — 7 CMS 11-14 5,105 850 — — 5,955 7 9 — — 16 CMS 15-18 258 326 — — 584 1 13 — — 14 CMS 19 — 43 — — 43 — 2 — — 2 CMS 20-23 — — 5 — 5 — — 5 — 5 36,377 1,295 5 — 37,677 15 24 5 — 44 Other RMS 1-6 235 — — — 235 — — — — — RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — — — — — — — — — 235 — — — 235 — — — — — CMS 1-10 — — — — — — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — — — — — — — — — — — Total loans and advances to customers 112,517 3,740 98 79 116,434 91 77 5 — 173 In respect of: Retail 75,905 2,445 93 79 78,522 76 53 — — 129 Commercial 36,377 1,295 5 — 37,677 15 24 5 — 44 Other 235 — — — 235 — — — — — Total loans and advances to customers 112,517 3,740 98 79 116,434 91 77 5 — 173 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to banks: CMS 1-10 5,660 — — 5,660 4 — — 4 CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 5,660 — — 5,660 4 — — 4 Loans and advances to customers: Retail - UK mortgages RMS 1-6 41,423 4,152 — 45,575 8 24 — 32 RMS 7-9 2 1,442 — 1,444 — 11 — 11 RMS 10 — 137 — 137 — 3 — 3 RMS 11-13 — 946 — 946 — 18 — 18 RMS 14 — — 568 568 — — 32 32 41,425 6,677 568 48,670 8 56 32 96 Retail - credit cards RMS 1-6 2,248 363 — 2,611 18 17 — 35 RMS 7-9 290 342 — 632 14 45 — 59 RMS 10 2 94 — 96 — 22 — 22 RMS 11-13 — 134 — 134 — 57 — 57 RMS 14 — — 88 88 — — 40 40 2,540 933 88 3,561 32 141 40 213 Retail - loans and overdrafts RMS 1-6 2,930 162 — 3,092 44 8 — 52 RMS 7-9 1,109 265 — 1,374 56 30 — 86 RMS 10 64 102 — 166 7 21 — 28 RMS 11-13 22 266 — 288 4 102 — 106 RMS 14 — — 173 173 — — 84 84 4,125 795 173 5,093 111 161 84 356 Retail - UK Motor Finance RMS 1-6 382 40 — 422 7 2 — 9 RMS 7-9 6 18 — 24 — 1 — 1 RMS 10 — 9 — 9 — 2 — 2 RMS 11-13 — 13 — 13 — 5 — 5 RMS 14 — — 44 44 — — 26 26 388 80 44 512 7 10 26 43 Retail - other RMS 1-6 5,173 188 — 5,361 9 11 — 20 RMS 7-9 2,186 214 — 2,400 10 32 — 42 RMS 10 — — — — — — — — RMS 11-13 345 395 — 740 — 35 — 35 RMS 14 — — 123 123 — — 37 37 7,704 797 123 8,624 19 78 37 134 Total Retail 56,182 9,282 996 66,460 177 446 219 842 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 17,907 175 — 18,082 20 — — 20 CMS 11-14 22,449 5,928 — 28,377 114 94 — 208 CMS 15-18 3,722 5,548 — 9,270 76 332 — 408 CMS 19 — 549 — 549 — 101 — 101 CMS 20-23 — — 1,865 1,865 — — 496 496 44,078 12,200 1,865 58,143 210 527 496 1,233 Other RMS 1-6 230 12 — 242 2 1 — 3 RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 6 6 — — 3 3 230 12 6 248 2 1 3 6 CMS 1-10 55,595 — — 55,595 — — — — CMS 11-14 104 — — 104 — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 55,699 — — 55,699 — — — — Central overlay — — — — 200 — — 200 Total loans and advances to customers 156,189 21,494 2,867 180,550 589 974 718 2,281 In respect of: Retail 56,182 9,282 996 66,460 177 446 219 842 Commercial 44,078 12,200 1,865 58,143 210 527 496 1,233 Other 1 55,929 12 6 55,947 202 1 3 206 Total loans and advances to customers 156,189 21,494 2,867 180,550 589 974 718 2,281 1 Principally comprises reverse repurchase agreement balances. Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to customers: Retail - UK mortgages RMS 1-6 1,720 — — 1,720 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 1,720 — — 1,720 — — — — Retail - credit cards RMS 1-6 14,814 1,081 — 15,895 17 19 — 36 RMS 7-9 154 154 — 308 3 4 — 7 RMS 10 3 21 — 24 — 1 — 1 RMS 11-13 — 24 — 24 — 2 — 2 RMS 14 — — 13 13 — — — — 14,971 1,280 13 16,264 20 26 — 46 Retail - loan and overdrafts RMS 1-6 3,414 99 — 3,513 8 4 — 12 RMS 7-9 160 74 — 234 4 8 — 12 RMS 10 8 22 — 30 1 4 — 5 RMS 11-13 2 42 — 44 — 12 — 12 RMS 14 — — 10 10 — — — — 3,584 237 10 3,831 13 28 — 41 Retail - UK Motor Finance RMS 1-6 24 — — 24 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 24 — — 24 — — — — Retail - other RMS 1-6 923 18 — 941 6 2 — 8 RMS 7-9 131 31 — 162 8 12 — 20 RMS 10 — — — — — — — — RMS 11-13 — 10 — 10 — 6 — 6 RMS 14 — — 1 1 — — — — 1,054 59 1 1,114 14 20 — 34 Total Retail 21,353 1,576 24 22,953 47 74 — 121 Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 27,598 — — 27,598 14 — — 14 CMS 11-14 8,105 1,239 — 9,344 26 13 — 39 CMS 15-18 829 1,057 — 1,886 13 41 — 54 CMS 19 — 54 — 54 — 7 — 7 CMS 20-23 — — 189 189 — — 8 8 36,532 2,350 189 39,071 53 61 8 122 Other RMS 1-6 242 — — 242 2 — — 2 RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 242 — — 242 2 — — 2 CMS 1-10 500 — — 500 — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 500 — — 500 — — — — Total loans and advances to customers 58,627 3,926 213 62,766 102 135 8 245 In respect of: Retail 21,353 1,576 24 22,953 47 74 — 121 Commercial 36,532 2,350 189 39,071 53 61 8 122 Other 742 — — 742 2 — — 2 Total loans and advances to customers 58,627 3,926 213 62,766 102 135 8 245 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to banks: CMS 1-10 4,453 — — 4,453 — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 4,453 — — 4,453 — — — — Loans and advances to customers: Retail - UK mortgages RMS 1-6 46,904 2,972 — 49,876 2 28 — 30 RMS 7-9 — 510 — 510 — 7 — 7 RMS 10 — 116 — 116 — 3 — 3 RMS 11-13 — 291 — 291 — 9 — 9 RMS 14 — — 558 558 — — 30 30 46,904 3,889 558 51,351 2 47 30 79 Retail - credit cards RMS 1-6 3,568 146 — 3,714 22 6 — 28 RMS 7-9 363 183 — 546 14 20 — 34 RMS 10 12 38 — 50 1 7 — 8 RMS 11-13 — 90 — 90 — 30 — 30 RMS 14 — — 92 92 — — 31 31 3,943 457 92 4,492 37 63 31 131 Retail - loans and overdrafts RMS 1-6 4,018 152 — 4,170 47 7 — 54 RMS 7-9 774 199 — 973 32 21 — 53 RMS 10 26 51 — 77 3 9 — 12 RMS 11-13 8 184 — 192 2 59 — 61 RMS 14 — — 168 168 — — 62 62 4,826 586 168 5,580 84 96 62 242 Retail - UK Motor Finance RMS 1-6 1,076 135 — 1,211 21 4 — 25 RMS 7-9 22 54 — 76 1 3 — 4 RMS 10 — 17 — 17 — 2 — 2 RMS 11-13 — 34 — 34 — 7 — 7 RMS 14 — — 60 60 — — 32 32 1,098 240 60 1,398 22 16 32 70 Retail - other RMS 1-6 1,958 156 — 2,114 18 4 — 22 RMS 7-9 7 281 — 288 — 20 — 20 RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 105 105 — — 35 35 1,965 437 105 2,507 18 24 35 77 Total Retail 58,736 5,609 983 65,328 163 246 190 599 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 32,465 380 — 32,845 25 1 — 26 CMS 11-14 20,141 2,030 — 22,171 40 33 — 73 CMS 15-18 1,462 2,519 — 3,981 10 145 — 155 CMS 19 — 111 — 111 — 10 — 10 CMS 20-23 — — 1,400 1,400 — — 309 309 54,068 5,040 1,400 60,508 75 189 309 573 Other RMS 1-6 267 32 — 299 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 2 2 — — 1 1 267 32 2 301 — — 1 1 CMS 1-10 52,605 — — 52,605 — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 52,605 — — 52,605 — — — — Total loans and advances to customers 165,676 10,681 2,385 178,742 238 435 500 1,173 In respect of: Retail 58,736 5,609 983 65,328 163 246 190 599 Commercial 54,068 5,040 1,400 60,508 75 189 309 573 Other 1 52,872 32 2 52,906 — — 1 1 Total loans and advances to customers 165,676 10,681 2,385 178,742 238 435 500 1,173 1 Principally comprises reverse repurchase agreement balances. Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to customers: Retail - UK mortgages RMS 1-6 1,120 — — 1,120 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 1,120 — — 1,120 — — — — Retail - credit cards RMS 1-6 15,052 369 — 15,421 12 7 — 19 RMS 7-9 96 60 — 156 1 1 — 2 RMS 10 1 8 — 9 — — — — RMS 11-13 — 11 — 11 — 1 — 1 RMS 14 — — 13 13 — — — — 15,149 448 13 15,610 13 9 — 22 Retail - loans and overdrafts RMS 1-6 3,619 68 — 3,687 7 2 — 9 RMS 7-9 59 31 — 90 1 3 — 4 RMS 10 1 7 — 8 — 1 — 1 RMS 11-13 — 17 — 17 — 8 — 8 RMS 14 — — 5 5 — — — — 3,679 123 5 3,807 8 14 — 22 Retail - UK Motor Finance RMS 1-6 84 — — 84 — — — — RMS 7-9 13 4 — 17 — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 97 4 — 101 — — — — Retail - other RMS 1-6 839 — — 839 10 — — 10 RMS 7-9 — 54 — 54 — 3 — 3 RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 2 2 — — — — 839 54 2 895 10 3 — 13 Total Retail 20,884 629 20 21,533 31 26 — 57 Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 25,847 44 — 25,891 5 — — 5 CMS 11-14 3,771 718 — 4,489 7 5 — 12 CMS 15-18 197 206 — 403 1 9 — 10 CMS 19 — 38 — 38 — 2 — 2 CMS 20-23 — — 4 4 — — 4 4 29,815 1,006 4 30,825 13 16 4 33 Other RMS 1-6 191 — — 191 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 191 — — 191 — — — — CMS 1-10 — — — — — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — — — — — — — — — Total loans and advances to customers 50,890 1,635 24 52,549 44 42 4 90 In respect of: Retail 20,884 629 20 21,533 31 26 — 57 Commercial 29,815 1,006 4 30,825 13 16 4 33 Other 191 — — 191 — — — — Total loans and advances to customers 50,890 1,635 24 52,549 44 42 4 90 Debt securities held at amortised cost An analysis by credit rating of debt securities held at amortised cost is provided below: 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Group £m £m £m £m £m £m Asset-backed securities: Mortgage-backed securities 2,046 — 2,046 2,934 — 2,934 Other asset-backed securities 1,593 20 1,613 874 — 874 3,639 20 3,659 3,808 — 3,808 Corporate and other debt securities 1,463 16 1,479 1,517 1 1,518 Gross exposure 5,102 36 5,138 5,325 1 5,326 Allowance for impairment losses (1) (1) Total debt securities held at amortised cost 5,137 5,325 The Bank Asset-backed securities: Mortgage-backed securities 1,741 — 1,741 2,926 — 2,926 Other asset-backed securities 1,103 — 1,103 798 — 798 2,844 — 2,844 3,724 — 3,724 Corporate and other debt securities 1,457 15 1,472 1,517 — 1,517 Gross exposure 4,301 15 4,316 5,241 — 5,241 Allowance for impairment losses (1) — Total debt securities held at amortised cost 4,315 5,241 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £8 million for the Group and £nil for the Bank; 2019: £nil for the Group and £nil for the Bank) and not rated (2020: £28 million for the Group and £15 million for the Bank; 2019: £1 million for the Group and £nil for the Bank). Financial assets at fair value through other comprehensive income (excluding equity shares) An analysis of financial assets at fair value through other comprehensive income is included in note 18. The credit quality of financial assets at fair value through other comprehensive income is set out below: 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Group £m £m £m £m £m £m Debt securities Government securities 14,267 — 14,267 13,082 — 13,082 Asset-backed securities — 65 65 — 60 60 Corporate and other debt securities 12,786 142 12,928 11,036 — 11,036 Total debt securities 27,053 207 27,260 24,118 60 24,178 Treasury and other bills — — — 439 — 439 Total financial assets at fair value through other comprehensive income 27,053 207 27,260 24,557 60 24,617 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £65 million; 2019: £60 million) and not rated (2020: £142 million; 2019: £nil). 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Bank £m £m £m £m £m £m Debt securities Government securities 14,114 — 14,114 12,938 — 12,938 Corporate and other debt securities 10,444 89 10,533 8,783 — 8,783 Total debt securities 24,558 89 24,647 21,721 — 21,721 Treasury and other bills — — — 439 — 439 24,558 89 24,647 22,160 — 22,160 Due from fellow Lloyds Banking Group undertakings: Corporate and other debt securities — — Total financial assets at fair value through other comprehensive income 24,647 22,160 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £nil; 2019: £nil) and not rated (2020: £89 million; 2019: £nil). Debt securities, treasury and other bills held at fair value through profit or loss An analysis of financial assets at fair value through profit or loss is included in note 14. Substantially all of the loans and advances to customers and banks recognised at fair value through profit or loss have a good quality rating. The credit quality of the Group’s debt securities, treasury and other bills held at fair value t

CASH FLOW STATEMENTS_2

CASH FLOW STATEMENTS	12 Months Ended
	Dec. 31, 2020
Disclosure of cash flow statement [text block] [Abstract]
CASH FLOW STATEMENTS	46 CASH FLOW STATEMENTS a. Change in operating assets The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Change in financial assets held at amortised cost (9,688) (11,832) (10,338) (1,815) (5,482) (992) Change in amounts due from fellow Lloyds Banking Group undertakings 1,116 24 4,827 73,506 (48,692) 9,875 Change in derivative financial instruments and financial assets at fair value through profit or loss 1,089 24,649 40,137 (268) 22,568 37,356 Change in other operating assets 627 63 (442) 239 63 295 Change in operating assets (6,856) 12,904 34,184 71,662 (31,543) 46,534 b. Change in operating liabilities The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Change in deposits from banks 1,404 (2,670) (2,677) 3,182 1,802 (2,219) Change in customer deposits 37,728 5,593 (11,901) 24,711 10,360 (5,258) Change in amounts due to fellow Lloyds Banking Group undertakings (1,316) (8,142) (5,466) (73,233) 28,016 (23,522) Change in debt securities in issue (17,138) 11,898 4,730 (13,400) 11,722 1,442 Change in derivative financial instruments and financial liabilities at fair value through profit or loss (2,549) (11,527) (45,383) (3,004) (10,776) (46,514) Change in investment contract liabilities — — (353) — — — Change in other operating liabilities 1 (288) (782) (383) (249) (1,823) (648) Change in operating liabilities 17,841 (5,630) (61,433) (61,993) 39,301 (76,719) 1 Includes a decrease of £163 million (2019: increase of £43 million; 2018: increase of £27 million) for the Group and a decrease of £42 million (2019: increase of £20 million; 2018: increase of £27 million) for the Bank in respect of lease liabilities. c. Non-cash and other items The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Depreciation and amortisation 2,670 2,602 2,374 1,325 1,245 1,031 Permanent diminution in value of investment in subsidiaries — — — — 159 92 Dividends and distributions on other equity instruments received from subsidiary undertakings — — — (211) (1,434) (4,968) Revaluation of investment properties 20 8 (46) — — — Allowance for loan losses 3,802 1,380 1,012 1,742 490 553 Write-off of allowance for loan losses, net of recoveries (1,279) (1,457) (1,000) (622) (759) (608) Impairment charge relating to undrawn balances 253 (17) (72) 155 14 (46) Impairment of financial assets at fair value through other comprehensive income 5 (1) (14) 1 (1) (2) Change in insurance contract liabilities — — (1,520) — — — Payment protection insurance provision 85 1,795 1,395 169 859 628 Other regulatory provisions 329 395 561 143 137 311 Other provision movements 80 (161) (509) 18 (43) (413) Additional capital injections to subsidiaries — — — (33) (53) (72) Net charge in respect of defined benefit schemes 247 245 404 121 131 196 Unwind of discount on impairment allowances (47) (52) (39) (31) (32) (33) Foreign exchange impact on balance sheet 1 823 420 (365) 491 (230) (130) Interest expense on subordinated liabilities 846 947 1,072 534 657 654 Loss (profit) on disposal of businesses — (107) (1,010) — — 21 Other non-cash items (1,169) (295) 933 (308) (142) 990 Total non-cash items 6,665 5,702 3,176 3,494 998 (1,796) Contributions to defined benefit schemes (1,153) (1,069) (868) (650) (563) (455) Payments in respect of payment protection insurance provision (1,700) (2,457) (2,101) (726) (1,156) (1,057) Payments in respect of other regulatory provisions (465) (707) (956) (233) (229) (302) Other 137 — 6 (65) — — Total other items (3,181) (4,233) (3,919) (1,674) (1,948) (1,814) Non-cash and other items 3,484 1,469 (743) 1,820 (950) (3,610) 1 When considering the movement on each line of the balance sheet, the impact of foreign exchange rate movements is removed in order to show the underlying cash impact. d. Analysis of cash and cash equivalents as shown in the balance sheet The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Cash and balances at central banks 49,888 38,880 40,213 45,753 35,741 37,632 Less: mandatory reserve deposits 1 (4,392) (3,177) (2,541) (954) (764) (803) 45,496 35,703 37,672 44,799 34,977 36,829 Loans and advances to banks 5,950 4,852 3,692 5,656 4,453 3,153 Less: amounts with a maturity of three months or more (2,480) (1,941) (1,641) (2,387) (1,648) (1,328) 3,470 2,911 2,051 3,269 2,805 1,825 Total cash and cash equivalents 48,966 38,614 39,723 48,068 37,782 38,654 1 Mandatory reserve deposits are held with local central banks in accordance with statutory requirements; these deposits are not available to finance the Group's day-to-day operations. e. Acquisition of group undertakings and businesses The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Net assets acquired: Intangible assets — — 21 — — — Other assets — — 6 — — — Other liabilities — — (1) — — — Cash consideration — — 26 — — — Less: cash and cash equivalents acquired — — — — — — Net cash outflow arising from acquisitions of subsidiaries and businesses — — 26 — — — Investment in subsidiary acquired — — — — — 98 Net cash outflow from acquisitions in the year — — 26 — — 98 f. Disposal of group undertakings and businesses The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Financial assets at fair value through profit or loss — — 125,379 — — — Loans and advances to customers — — 3,495 — — — Due from fellow group undertakings — — 14,436 — — — Derivative financial instruments — — 3,027 — — — Investment property — — 3,639 — — — Goodwill — — 1,836 — — — Value of in-force business — — 4,902 — — — Property, plant and equipment — — 48 — — — — — 156,762 — — — Customer deposits — — (15,236) — — — Due to fellow Lloyds Banking Group undertakings — — (2,584) — — — Derivative financial instruments — — (2,762) — — — Liabilities from insurance and investment contracts — — (117,021) — — — Subordinated liabilities — — (2,494) — — — Non-controlling interests — — (305) — — — Other net liabilities — — (8,759) — — — — — (149,161) — — — Net assets disposed of — — 7,601 — — — Investment in subsidiary disposed of — — — — 20 7,725 Profit (loss) on sale of businesses — 107 1,010 — — (21) Cash consideration received on losing control of group undertakings and businesses — 107 8,611 — 20 7,704 Cash and cash equivalents disposed — — (7) — — — Net cash inflow — 107 8,604 — 20 7,704

FUTURE ACCOUNTING DEVELOPMENTS

FUTURE ACCOUNTING DEVELOPMENTS	12 Months Ended
	Dec. 31, 2020
Disclosure of events after reporting period [text block] [Abstract]
FUTURE ACCOUNTING DEVELOPMENTS	47 FUTURE ACCOUNTING DEVELOPMENTS The following pronouncements are not applicable for the year ending 31 December 2020 and have not been applied in preparing these financial statements. Interest Rate Benchmark Reform The IASB’s Phase 2 amendments in response to issues arising from the replacement of interest rate benchmarks in a number of jurisdictions are effective for annual periods beginning on or after 1 January 2021. Under these amendments, an immediate gain or loss is not recognised in the income statement where the contractual cash flows of a financial asset or financial liability are amended as a direct consequence of the rate reform and the revised contractual terms are economically equivalent to the previous terms. In addition, hedge accounting is continued for relationships that are directly affected by the reform. These amendments are not expected to have a significant impact on the Group. Minor amendments to other accounting standards The IASB has issued a number of minor amendments to IFRSs effective 1 January 2021 and in later years (including IFRS 9 Financial Instruments and IAS 37 Provisions, Contingent Liabilities and Contingent Assets) . These amendments are not expected to have a significant impact on the Group.

ACCOUNTING POLICIES (Policies)

ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2020
Disclosure of significant accounting policies [Abstract]
Consolidation	The assets, liabilities and results of Group undertakings (including structured entities) are included in the financial statements on the basis of accounts made up to the reporting date. Group undertakings include subsidiaries, associates and joint ventures. (1) Subsidiaries Subsidiaries are entities controlled by the Group. The Group controls an entity when it has power over the entity, is exposed to, or has rights to, variable returns from its involvement with the entity, and has the ability to affect those returns through the exercise of its power. This generally accompanies a shareholding of more than one half of the voting rights although in certain circumstances a holding of less than one half of the voting rights may still result in the ability of the Group to exercise control. The existence and effect of potential voting rights that are currently exercisable or convertible are considered when assessing whether the Group controls another entity. The Group reassesses whether or not it controls an entity if facts and circumstances indicate that there are changes to any of the above elements. Subsidiaries are fully consolidated from the date on which control is transferred to the Group; they are de-consolidated from the date that control ceases. Structured entities are entities that are designed so that their activities are not governed by way of voting rights. In assessing whether the Group has power over such entities in which it has an interest, the Group considers factors such as the purpose and design of the entity; its practical ability to direct the relevant activities of the entity; the nature of the relationship with the entity; and the size of its exposure to the variability of returns of the entity. The treatment of transactions with non-controlling interests depends on whether, as a result of the transaction, the Group loses control of the subsidiary. Changes in the parent’s ownership interest in a subsidiary that do not result in a loss of control are accounted for as equity transactions; any difference between the amount by which the non-controlling interests are adjusted and the fair value of the consideration paid or received is recognised directly in equity and attributed to the owners of the parent entity. Where the Group loses control of the subsidiary, at the date when control is lost the amount of any non-controlling interest in that former subsidiary is derecognised and any investment retained in the former subsidiary is remeasured to its fair value; the gain or loss that is recognised in profit or loss on the partial disposal of the subsidiary includes the gain or loss on the remeasurement of the retained interest. Intercompany transactions, balances and unrealised gains and losses on transactions between Group companies are eliminated. The acquisition method of accounting is used to account for business combinations by the Group. The consideration for the acquisition of a subsidiary is the fair value of the assets transferred, the liabilities incurred and the equity interests issued by the Group. The consideration includes the fair value of any asset or liability resulting from a contingent consideration arrangement. Acquisition related costs are expensed as incurred except those relating to the issuance of debt instruments (see (E)(4) below) or share capital (see (O) below). Identifiable assets acquired and liabilities assumed in a business combination are measured initially at their fair value at the acquisition date. (2) Joint ventures and associates Joint ventures are joint arrangements over which the Group has joint control with other parties and has rights to the net assets of the arrangements. Joint control is the contractually agreed sharing of control of an arrangement and only exists when decisions about the relevant activities require the unanimous consent of the parties sharing control. Associates are entities over which the Group has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the entity, but is not control or joint control of those policies, and is generally achieved through holding between 20 per cent and 50 per cent of the voting share capital of the entity. The Group utilises the venture capital exemption for investments where significant influence or joint control is present and the business unit operates as a venture capital business. These investments are designated at initial recognition at fair value through profit or loss. Otherwise, the Group’s investments in joint ventures and associates are accounted for by the equity method of accounting.
Goodwill	Goodwill arises on business combinations and represents the excess of the cost of an acquisition over the fair value of the Group’s share of the identifiable assets, liabilities and contingent liabilities acquired. Where the fair value of the Group’s share of the identifiable assets, liabilities and contingent liabilities of the acquired entity is greater than the cost of acquisition, the excess is recognised immediately in the income statement. Goodwill is recognised as an asset at cost and is tested at least annually for impairment. If an impairment is identified the carrying value of the goodwill is written down immediately through the income statement and is not subsequently reversed. At the date of disposal of a subsidiary, the carrying value of attributable goodwill is included in the calculation of the profit or loss on disposal.
Other intangible assets	Intangible assets which have been determined to have a finite useful life are amortised on a straight line basis over their estimated useful life as follows: up to 7 years for capitalised software; 10 to 15 years for brands and other intangible assets. Intangible assets with finite useful lives are reviewed at each reporting date to assess whether there is any indication that they are impaired. If any such indication exists the recoverable amount of the asset is determined and in the event that the asset’s carrying amount is greater than its recoverable amount, it is written down immediately. Certain brands have been determined to have an indefinite useful life and are not amortised. Such intangible assets are reassessed annually to reconfirm that an indefinite useful life remains appropriate. In the event that an indefinite life is inappropriate a finite life is determined and an impairment review is performed on the asset.
Revenue recognition	(1) Net interest income Interest income and expense are recognised in the income statement using the effective interest method for all interest-bearing financial instruments, except for those classified at fair value through profit or loss. The effective interest method is a method of calculating the amortised cost of a financial asset or liability and of allocating the interest income or interest expense over the expected life of the financial instrument. The effective interest rate is the rate that exactly discounts the estimated future cash payments or receipts over the expected life of the financial instrument to the gross carrying amount of the financial asset (before adjusting for expected credit losses) or to the amortised cost of the financial liability, including early redemption fees, and related penalties, and premiums and discounts that are an integral part of the overall return. In the case of financial assets that are purchased or originated credit-impaired, the effective interest rate is the rate that discounts the estimated future cash flows to the amortised cost of the instrument. Direct incremental transaction costs related to the acquisition, issue or disposal of a financial instrument are also taken into account. Interest income from non-credit impaired financial assets is recognised by applying the effective interest rate to the gross carrying amount of the asset; for credit impaired financial assets, the effective interest rate is applied to the net carrying amount after deducting the allowance for expected credit losses. Impairment policies are set out in (H) below. (2) Fee and commission income and expense Fees and commissions receivable which are not an integral part of the effective interest rate are recognised as income as the Group fulfils its performance obligations. The Group’s principal performance obligations arising from contracts with customers are in respect of value added current accounts, credit cards and debit cards. These fees are received, and the Group’s provides the service, monthly; the fees are recognised in income on this basis. The Group also receives certain fees in respect of its asset finance business where the performance obligations are typically fulfilled towards the end of the customer contract; these fees are recognised in income on this basis. Where it is unlikely that the loan commitments will be drawn, loan commitment fees are recognised in fee and commission income over the life of the facility, rather than as an adjustment to the effective interest rate for loans expected to be drawn. Incremental costs incurred to generate fee and commission income are charged to fees and commissions expense as they are incurred. (3) Other Dividend income is recognised when the right to receive payment is established. Revenue recognition policies specific to trading income are set out in (E)(3) below; those relating to leases are set out in (J)(1) below.
Financial assets and liabilities	On initial recognition, financial assets are classified as measured at amortised cost, fair value through other comprehensive income or fair value through profit or loss, depending on the Group’s business model for managing the financial assets and whether the cash flows represent solely payments of principal and interest. The Group assesses its business models at a portfolio level based on its objectives for the relevant portfolio, how the performance of the portfolio is managed and reported, and the frequency of asset sales. Financial assets with embedded derivatives are considered in their entirety when considering their cash flow characteristics. The Group reclassifies financial assets when and only when its business model for managing those assets changes. A reclassification will only take place when the change is significant to the Group’s operations and will occur at a portfolio level and not for individual instruments; reclassifications are expected to be rare. Equity investments are measured at fair value through profit or loss unless the Group elects at initial recognition to account for the instruments at fair value through other comprehensive income. For these instruments, principally strategic investments, dividends are recognised in profit or loss but fair value gains and losses are not subsequently reclassified to profit or loss following derecognition of the investment. The Group initially recognises loans and advances, deposits, debt securities in issue and subordinated liabilities when the Group becomes a party to the contractual provisions of the instrument. Regular way purchases and sales of securities and other financial assets and trading liabilities are recognised on trade date, being the date that the Group is committed to purchase or sell an asset. Financial assets are derecognised when the contractual right to receive cash flows from those assets has expired or when the Group has transferred its contractual right to receive the cash flows from the assets and either: substantially all of the risks and rewards of ownership have been transferred; or the Group has neither retained nor transferred substantially all of the risks and rewards, but has transferred control. Financial liabilities are derecognised when the obligation is discharged, cancelled or expires. (1) Financial instruments measured at amortised cost Financial assets that are held to collect contractual cash flows where those cash flows represent solely payments of principal and interest are measured at amortised cost. A basic lending arrangement results in contractual cash flows that are solely payments of principal and interest on the principal amount outstanding. Where the contractual cash flows introduce exposure to risks or volatility unrelated to a basic lending arrangement such as changes in equity prices or commodity prices, the payments do not comprise solely principal and interest. Financial assets measured at amortised cost are predominantly loans and advances to customers and banks together with certain debt securities used by the Group to manage its liquidity. Loans and advances are initially recognised when cash is advanced to the borrower at fair value inclusive of transaction costs. Interest income is accounted for using the effective interest method (see (D) above). Financial liabilities are measured at amortised cost, except for trading liabilities and other financial liabilities designated at fair value through profit or loss on initial recognition which are held at fair value. (2) Financial assets measured at fair value through other comprehensive income Financial assets that are held to collect contractual cash flows and for subsequent sale, where the assets’ cash flows represent solely payments of principal and interest, are recognised in the balance sheet at their fair value, inclusive of transaction costs. Interest calculated using the effective interest method and foreign exchange gains and losses on assets denominated in foreign currencies are recognised in the income statement. All other gains and losses arising from changes in fair value are recognised directly in other comprehensive income, until the financial asset is either sold or matures, at which time the cumulative gain or loss previously recognised in other comprehensive income is recognised in the income statement other than in respect of equity shares, for which the cumulative revaluation amount is transferred directly to retained profits. The Group recognises a charge for expected credit losses in the income statement (see (H) below). As the asset is measured at fair value, the charge does not adjust the carrying value of the asset, it is reflected in other comprehensive income. (3) Financial instruments measured at fair value through profit or loss Financial assets are classified at fair value through profit or loss where they do not meet the criteria to be measured at amortised cost or fair value through other comprehensive income or where they are designated at fair value through profit or loss to reduce an accounting mismatch. All derivatives are carried at fair value through profit or loss. Trading securities, which are debt securities and equity shares acquired principally for the purpose of selling in the short-term or which are part of a portfolio which is managed for short-term gains, do not meet these criteria and are also measured at fair value through profit or loss. Financial assets measured at fair value through profit or loss are recognised in the balance sheet at their fair value. Fair value gains and losses together with interest coupons and dividend income are recognised in the income statement within net trading income. Financial liabilities are measured at fair value through profit or loss where they are trading liabilities or where they are designated at fair value through profit or loss in order to reduce an accounting mismatch; where the liabilities are part of a group of liabilities (or assets and liabilities) which is managed, and its performance evaluated, on a fair value basis; or where the liabilities contain one or more embedded derivatives that significantly modify the cash flows arising under the contract and would otherwise need to be separately accounted for. Financial liabilities measured at fair value through profit or loss are recognised in the balance sheet at their fair value. Fair value gains and losses are recognised in the income statement within net trading income in the period in which they occur, except that gains and losses attributable to changes in own credit risk are recognised in other comprehensive income. The fair values of assets and liabilities traded in active markets are based on current bid and offer prices respectively. If the market is not active the Group establishes a fair value by using valuation techniques. The fair values of derivative financial instruments are adjusted where appropriate to reflect credit risk (via credit valuation adjustments (CVAs), debit valuation adjustments (DVAs) and funding valuation adjustments (FVAs)), market liquidity and other risks. (4) Borrowings Borrowings (which include deposits from banks, customer deposits, debt securities in issue and subordinated liabilities) are recognised initially at fair value, being their issue proceeds net of transaction costs incurred. These instruments are subsequently stated at amortised cost using the effective interest method. Preference shares and other instruments which carry a mandatory coupon or are redeemable on a specific date are classified as financial liabilities. The coupon on these instruments is recognised in the income statement as interest expense. Securities which carry a discretionary coupon and have no fixed maturity or redemption date are classified as other equity instruments. Interest payments on these securities are recognised, as distributions from equity in the period in which they are paid. An exchange of financial liabilities on substantially different terms is accounted for as an extinguishment of the original financial liability and the recognition of a new financial liability. The difference between the carrying amount of a financial liability extinguished and the new financial liability is recognised in profit or loss together with any related costs or fees incurred. When a financial liability is exchanged for an equity instrument, the new equity instrument is recognised at fair value and any difference between the carrying value of the liability and the fair value of the new equity is recognised in profit or loss. (5) Sale and repurchase agreements (including securities lending and borrowing) Securities sold subject to repurchase agreements (repos) continue to be recognised on the balance sheet where substantially all of the risks and rewards are retained. Funds received under these arrangements are included in deposits from banks, customer deposits, or trading liabilities. Conversely, securities purchased under agreements to resell (reverse repos), where the Group does not acquire substantially all of the risks and rewards of ownership, are recorded as loans and advances measured at amortised cost or trading securities. The difference between sale and repurchase price is treated as interest and accrued over the life of the agreements using the effective interest method. Securities borrowing and lending transactions are typically secured; collateral takes the form of securities or cash advanced or received. Securities lent to counterparties are retained on the balance sheet. Securities borrowed are not recognised on the balance sheet, unless these are sold to third parties, in which case the obligation to return them is recorded at fair value as a trading liability. Cash collateral given or received is treated as a loan and advance measured at amortised cost or customer deposit.
Derivative financial instruments and hedge accounting	As permitted by IFRS 9, the Group continues to apply the requirements of IAS 39 to its hedging relationships. All derivatives are recognised at their fair value. Derivatives are carried on the balance sheet as assets when their fair value is positive and as liabilities when their fair value is negative. Refer to note 42(3) (Financial instruments: Financial assets and liabilities carried at fair value) for details of valuation techniques and significant inputs to valuation models. Changes in the fair value of all derivative instruments, other than those in effective cash flow and net investment hedging relationships, are recognised immediately in the income statement. As noted in (2) and (3) below, the change in fair value of a derivative in an effective cash flow or net investment hedging relationship is allocated between the income statement and other comprehensive income. Derivatives embedded in a financial asset are not considered separately; the financial asset is considered in its entirety when determining whether its cash flows are solely payments of principal and interest. Derivatives embedded in financial liabilities treated as separate derivatives when their economic characteristics and risks are not closely related to those of the host contract and the host contract is not carried at fair value through profit or loss. These embedded derivatives are measured at fair value with changes in fair value recognised in the income statement. Hedge accounting allows one financial instrument, generally a derivative such as a swap, to be designated as a hedge of another financial instrument such as a loan or deposit or a portfolio of such instruments. At the inception of the hedge relationship, formal documentation is drawn up specifying the hedging strategy, the hedged item, the hedging instrument and the methodology that will be used to measure the effectiveness of the hedge relationship in offsetting changes in the fair value or cash flow of the hedged risk. The effectiveness of the hedging relationship is tested both at inception and throughout its life and if at any point it is concluded that it is no longer highly effective in achieving its documented objective, hedge accounting is discontinued. Note 15 provides details of the types of derivatives held by the Group and presents separately those designated in hedge relationships. Where there is uncertainty arising from interest rate benchmark reform, the Group assumes that the interest rate benchmark on which the hedged cash flows and/or the hedged risk are based, or the interest rate benchmark on which the cash flows of the hedging instrument are based, are not altered as a result of interest rate benchmark reform. The Group does not discontinue a hedging relationship during the period of uncertainty arising from the interest rate benchmark reform solely because the actual results of the hedge are not highly effective. (1) Fair value hedges Changes in the fair value of derivatives that are designated and qualify as fair value hedges are recorded in the income statement, together with the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk; this also applies if the hedged asset is classified as a financial asset at fair value through other comprehensive income. If the hedge no longer meets the criteria for hedge accounting, changes in the fair value of the hedged item attributable to the hedged risk are no longer recognised in the income statement. The cumulative adjustment that has been made to the carrying amount of the hedged item is amortised to the income statement using the effective interest method over the period to maturity. (2) Cash flow hedges The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges is recognised in other comprehensive income in the cash flow hedging reserve. The gain or loss relating to the ineffective portion is recognised immediately in the income statement. Amounts accumulated in equity are reclassified to the income statement in the periods in which the hedged item affects profit or loss. When a hedging instrument expires or is sold, or when a hedge no longer meets the criteria for hedge accounting, any cumulative gain or loss existing in equity at that time remains in equity and is recognised in the income statement when the forecast transaction is ultimately recognised in the income statement. When a forecast transaction is no longer expected to occur, the cumulative gain or loss that was reported in equity is immediately transferred to the income statement. (3) Net investment hedges Hedges of net investments in foreign operations are accounted for similarly to cash flow hedges. Any gain or loss on the hedging instrument relating to the effective portion of the hedge is recognised in other comprehensive income, the gain or loss relating to the ineffective portion is recognised immediately in the income statement. Gains and losses accumulated in equity are included in the income statement when the foreign operation is disposed of. The hedging instrument used in net investment hedges may include non-derivative liabilities as well as derivative financial instruments.
Offset	Financial assets and liabilities are offset and the net amount reported in the balance sheet when there is a legally enforceable right of offset and there is an intention to settle on a net basis, or realise the asset and settle the liability simultaneously. Cash collateral on exchange traded derivative transactions is presented gross unless the collateral cash flows are always settled net with the derivative cash flows. In certain situations, even though master netting agreements exist, the lack of management intention to settle on a net basis results in the financial assets and liabilities being reported gross on the balance sheet.
Impairment of financial assets	The impairment charge in the income statement includes the change in expected credit losses and including those arising from fraud. Expected credit losses are recognised for loans and advances to customers and banks, other financial assets held at amortised cost, financial assets measured at fair value through other comprehensive income, and certain loan commitments and financial guarantee contracts. Expected credit losses are calculated as an unbiased and probability-weighted estimate using an appropriate probability of default, adjusted to take into account a range of possible future economic scenarios, and applying this to the estimated exposure of the Group at the point of default after taking into account the value of any collateral held, repayments, or other mitigants of loss and including the impact of discounting using the effective interest rate. At initial recognition, allowance (or provision in the case of some loan commitments and financial guarantees) is made for expected credit losses resulting from default events that are possible within the next 12 months (12-month expected credit losses). In the event of a significant increase in credit risk since origination, allowance (or provision) is made for expected credit losses resulting from all possible default events over the expected life of the financial instrument (lifetime expected credit losses). Financial assets where 12-month expected credit losses are recognised are considered to be Stage 1; financial assets which are considered to have experienced a significant increase in credit risk since initial recognition are in Stage 2; and financial assets which have defaulted or are otherwise considered to be credit impaired are allocated to Stage 3. Some Stage 3 assets, mainly in Commercial Banking, are subject to individual rather than collective assessment. Such cases are subject to a risk-based impairment sanctioning process, and these are reviewed and updated at least quarterly, or more frequently if there is a significant change in the credit profile. The collective assessment of impairment aggregates financial instruments with similar risk characteristics such as whether the facility is revolving in nature or secured and the type of security against financial assets. An assessment of whether credit risk has increased significantly since initial recognition considers the change in the risk of default occurring over the remaining expected life of the financial instrument. In determining whether there has been a significant increase in credit risk, the Group uses quantitative tests based on relative and absolute probability of default (PD) movements linked to internal credit ratings together with qualitative indicators such as watchlists and other indicators of historical delinquency, credit weakness or financial difficulty. The use of internal credit ratings and qualitative indicators ensure alignment between the assessment of staging and the Group’s management of credit risk which utilises these internal metrics within distinct retail and commercial portfolio risk management practices. However, unless identified at an earlier stage, the credit risk of financial assets is deemed to have increased significantly when more than 30 days past due. The use of a payment holiday in itself has not been judged to indicate a significant increase in credit risk, with the underlying long-term credit risk deemed to be driven by economic conditions and captured through the use of forward-looking models. These portfolio level models are capturing the anticipated volume of increased defaults and therefore an appropriate assessment of staging and expected credit loss. Where the credit risk subsequently improves such that it no longer represents a significant increase in credit risk since initial recognition, the asset is transferred back to Stage 1. Assets are transferred to Stage 3 when they have defaulted or are otherwise considered to be credit impaired. Default is considered to have occurred when there is evidence that the customer is experiencing financial difficulty which is likely to affect significantly the ability to repay the amount due. IFRS 9 contains a rebuttable presumption that default occurs no later than when a payment is 90 days past due. The Group uses this 90 day backstop for all its products except for UK mortgages. For UK mortgages, the Group uses a backstop of 180 days past due as mortgage exposures more than 90 days past due, but less than 180 days, typically show high cure rates and this aligns with the Group’s risk management practices. Key differences between Stage 3 balances and non-performing loans relate to the use of 180 days past due for Stage 3 mortgages and to the cure periods applied to forbearance exposures. The use of payment holidays is not considered to be an automatic trigger of regulatory default and therefore does not automatically trigger Stage 3. Days past due will also not accumulate on any accounts that have taken a payment holiday including those already past due. In certain circumstances, the Group will renegotiate the original terms of a customer’s loan, either as part of an ongoing customer relationship or in response to adverse changes in the circumstances of the borrower. In the latter circumstances, the loan will remain classified as either Stage 2 or Stage 3 until the credit risk has improved such that it no longer represents a significant increase since origination (for a return to Stage 1), or the loan is no longer credit impaired (for a return to Stage 2). On renegotiation the gross carrying amount of the loan is recalculated as the present value of the renegotiated or modified contractual cash flows, which are discounted at the original effective interest rate. Renegotiation may also lead to the loan and associated allowance being derecognised and a new loan being recognised initially at fair value. Purchased or originated credit-impaired financial assets (POCI) include financial assets that are purchased or originated at a deep discount that reflects incurred credit losses. At initial recognition, POCI assets do not carry an impairment allowance; instead, lifetime expected credit losses are incorporated into the calculation of the effective interest rate. All changes in lifetime expected credit losses subsequent to the assets’ initial recognition are recognised as an impairment charge. A loan or advance is normally written off, either partially or in full, against the related allowance when the proceeds from realising any available security have been received or there is no realistic prospect of recovery and the amount of the loss has been determined. Subsequent recoveries of amounts previously written off decrease the amount of impairment losses recorded in the income statement. For both secured and unsecured retail balances, the write-off takes place only once an extensive set of collections processes has been completed, or the status of the account reaches a point where policy dictates that continuing attempts to recover are no longer appropriate. For commercial lending, a write-off occurs if the loan facility with the customer is restructured, the asset is under administration and the only monies that can be received are the amounts estimated by the administrator, the underlying assets are disposed and a decision is made that no further settlement monies will be received, or external evidence (for example, third party valuations) is available that there has been an irreversible decline in expected cash flows.
Property, plant and equipment	Property, plant and equipment (other than investment property) is included at cost less accumulated depreciation. The value of land (included in premises) is not depreciated. Depreciation on other assets is calculated using the straight-line method to allocate the difference between the cost and the residual value over their estimated useful lives, as follows: the shorter of 50 years and the remaining period of the lease for freehold/long and short leasehold premises; the shorter of 10 years and, if lease renewal is not likely, the remaining period of the lease for leasehold improvements; 10 to 20 years for fixtures and furnishings; and 2 to 8 years for other equipment and motor vehicles. The assets’ residual values and useful lives are reviewed, and adjusted if appropriate, at each balance sheet date. Assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. In the event that an asset’s carrying amount is determined to be greater than its recoverable amount it is written down immediately. The recoverable amount is the higher of the asset’s fair value less costs to sell and its value in use. Investment property comprises freehold and long leasehold land and buildings that are held either to earn rental income or for capital accretion or both. In accordance with the guidance published by the Royal Institution of Chartered Surveyors, investment property is carried at fair value based on current prices for similar properties, adjusted for the specific characteristics of the property (such as location or condition). If this information is not available, the Group uses alternative valuation methods such as discounted cash flow projections or recent prices in less active markets. These valuations are reviewed at least annually by independent professionally qualified valuers. Investment property being redeveloped for continuing use as investment property, or for which the market has become less active, continues to be valued at fair value.
Leases	Under IFRS 16, a lessor is required to determine whether a lease is a finance or operating lease. A lessee is not required to make this determination. (1) As lessor Assets leased to customers are classified as finance leases if the lease agreements transfer substantially all the risks and rewards of ownership to the lessee but not necessarily legal title. All other leases are classified as operating leases. When assets are subject to finance leases, the present value of the lease payments, together with any unguaranteed residual value, is recognised as a receivable, net of allowances for expected credit losses and residual value impairment, within loans and advances to banks and customers. The difference between the gross receivable and the present value of the receivable is recognised as unearned finance lease income. Finance lease income is recognised in interest income over the term of the lease using the net investment method (before tax) so as to give a constant rate of return on the net investment in the leases. Unguaranteed residual values are reviewed regularly to identify any impairment. Operating lease assets are included within property, plant and equipment at cost and depreciated over their estimated useful lives, which equates to the lives of the leases, after taking into account anticipated residual values. Operating lease rental income is recognised on a straight-line basis over the life of the lease. The Group evaluates non-lease arrangements such as outsourcing and similar contracts to determine if they contain a lease which is then accounted for separately. (2) As lessee Leases are recognised as a right-of-use asset and a corresponding liability at the date at which the leased asset is available for use by the Group. Assets and liabilities arising from a lease are initially measured on a present value basis. The lease payments are discounted using the interest rate implicit in the lease, if that rate can be determined, or the Group’s incremental borrowing rate appropriate for the right-of-use asset arising from the lease. Lease payments are allocated between the liability and finance cost. The finance cost is charged to profit or loss over the lease period so as to produce a constant periodic rate of interest on the remaining balance of the liability for each period. The right-of-use asset is depreciated over the shorter of the asset's useful life and the lease term on a straight-line basis. Payments associated with short-term leases and leases of low-value assets are recognised on a straight-line basis as an expense in profit or loss. Short-term leases are leases with a lease term of twelve months or less. Low-value assets comprise IT equipment and small items of office furniture.
Employee benefits	Short-term employee benefits, such as salaries, paid absences, performance-based cash awards and social security costs are recognised over the period in which the employees provide the related services. (1) Pension schemes The Group operates a number of post-retirement benefit schemes for its employees including both defined benefit and defined contribution pension plans. A defined benefit scheme is a pension plan that defines an amount of pension benefit that an employee will receive on retirement, dependent on one or more factors such as age, years of service and salary. A defined contribution plan is a pension plan into which the Group pays fixed contributions; there is no legal or constructive obligation to pay further contributions. Scheme assets are included at their fair value and scheme liabilities are measured on an actuarial basis using the projected unit credit method. The defined benefit scheme liabilities are discounted using rates equivalent to the market yields at the balance sheet date on high-quality corporate bonds that are denominated in the currency in which the benefits will be paid, and that have terms to maturity approximating to the terms of the related pension liability. The Group’s income statement charge includes the current service cost of providing pension benefits, past service costs, net interest expense (income), and plan administration costs that are not deducted from the return on plan assets. Past service costs, which represents the change in the present value of the defined benefit obligation resulting from a plan amendment or curtailment, are recognised when the plan amendment or curtailment occurs. Net interest expense (income) is calculated by applying the discount rate at the beginning of the period to the net defined benefit liability or asset. Remeasurements, comprising actuarial gains and losses, the return on plan assets (excluding amounts included in net interest expense (income) and net of the cost of managing the plan assets), and the effect of changes to the asset ceiling (if applicable) are reflected immediately in the balance sheet with a charge or credit recognised in other comprehensive income in the period in which they occur. Remeasurements recognised in other comprehensive income are reflected immediately in retained profits and will not subsequently be reclassified to profit or loss. The Group’s balance sheet includes the net surplus or deficit, being the difference between the fair value of scheme assets and the discounted value of scheme liabilities at the balance sheet date. Surpluses are only recognised to the extent that they are recoverable through reduced contributions in the future or through refunds from the schemes. In assessing whether a surplus is recoverable, the Group considers (i) its current right to obtain a refund or a reduction in future contributions and (ii) the rights of other parties existing at the balance sheet date. In determining the rights of third parties existing at the balance sheet date, the Group does not anticipate any future acts by other parties. The costs of the Group’s defined contribution plans are charged to the income statement in the period in which they fall due. (2) Share-based compensation Lloyds Banking Group operates a number of equity-settled, share-based compensation plans in respect of services received from certain of its employees. The value of the employee services received in exchange for equity instruments granted under these plans is recognised as an expense over the vesting period of the instruments, with a corresponding increase in equity. This expense is determined by reference to the fair value of the number of equity instruments that are expected to vest. The fair value of equity instruments granted is based on market prices, if available, at the date of grant. In the absence of market prices, the fair value of the instruments at the date of grant is estimated using an appropriate valuation technique, such as a Black-Scholes option pricing model or a Monte Carlo simulation. The determination of fair values excludes the impact of any non-market vesting conditions, which are included in the assumptions used to estimate the number of options that are expected to vest. At each balance sheet date, this estimate is reassessed and if necessary revised. Any revision of the original estimate is recognised in the income statement, together with a corresponding adjustment to equity. Cancellations by employees of contributions to the Group’s Save As You Earn plans are treated as non-vesting conditions and the Group recognises, in the year of cancellation, the amount of the expense that would have otherwise been recognised over the remainder of the vesting period. Modifications are assessed at the date of modification and any incremental charges are charged to the income statement.
Taxation	Tax expense comprises current and deferred tax. Current and deferred tax are charged or credited in the income statement except to the extent that the tax arises from a transaction or event which is recognised, in the same or a different period, outside the income statement (either in other comprehensive income, directly in equity, or through a business combination), in which case the tax appears in the same statement as the transaction that gave rise to it. The tax consequences of the Group's dividend payments (including distributions on other equity instruments), if any, are charged or credited to the statement in which the profit distributed originally arose. Current tax is the amount of corporate income taxes expected to be payable or recoverable based on the profit for the period as adjusted for items that are not taxable or not deductible, and is calculated using tax rates and laws that were enacted or substantively enacted at the balance sheet date. Current tax includes amounts provided in respect of uncertain tax positions when management expects that, upon examination of the uncertainty by Her Majesty’s Revenue and Customs (HMRC) or other relevant tax authority, it is more likely than not that an economic outflow will occur. Provisions reflect management’s best estimate of the ultimate liability based on their interpretation of tax law, precedent and guidance, informed by external tax advice as necessary. Changes in facts and circumstances underlying these provisions are reassessed at each balance sheet date, and the provisions are remeasured as required to reflect current information. Deferred tax is recognised on temporary differences arising between the tax bases of assets and liabilities and their carrying amounts in the balance sheet. Deferred tax is calculated using tax rates and laws that have been enacted or substantively enacted at the balance sheet date, and which are expected to apply when the related deferred tax asset is realised or the deferred tax liability is settled. Deferred tax liabilities are generally recognised for all taxable temporary differences but not recognised for taxable temporary differences arising on investments in subsidiaries where the reversal of the temporary difference can be controlled and it is probable that the difference will not reverse in the foreseeable future. Deferred tax liabilities are not recognised on temporary differences that arise from goodwill which is not deductible for tax purposes. Deferred tax assets are recognised to the extent it is probable that taxable profits will be available against which the deductible temporary differences can be utilised, and are reviewed at each balance sheet date and reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow all or part of the asset to be recovered. Deferred tax assets and liabilities are not recognised in respect of temporary differences that arise on initial recognition of assets and liabilities acquired other than in a business combination. Deferred tax is not discounted.
Foreign currency translation	Items included in the financial statements of each of the Group’s entities are measured using the currency of the primary economic environment in which the entity operates (the functional currency). Foreign currency transactions are translated into the appropriate functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation at year end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognised in the income statement, except when recognised in other comprehensive income as qualifying cash flow or net investment hedges. Non-monetary assets that are measured at fair value are translated using the exchange rate at the date that the fair value was determined. Translation differences on equities and similar non-monetary items held at fair value through profit and loss are recognised in profit or loss as part of the fair value gain or loss. Translation differences on non-monetary financial assets measured at fair value through other comprehensive income, such as equity shares, are included in the fair value reserve in equity unless the asset is a hedged item in a fair value hedge. The results and financial position of all Group entities that have a functional currency different from the presentation currency are translated into the presentation currency as follows: the assets and liabilities of foreign operations, including goodwill and fair value adjustments arising on the acquisition of a foreign entity, are translated into sterling at foreign exchange rates ruling at the balance sheet date; and the income and expenses of foreign operations are translated into sterling at average exchange rates unless these do not approximate to the foreign exchange rates ruling at the dates of the transactions in which case income and expenses are translated at the dates of the transactions. Foreign exchange differences arising on the translation of a foreign operation are recognised in other comprehensive income and accumulated in a separate component of equity together with exchange differences arising from the translation of borrowings and other currency instruments designated as hedges of such investments (see (F)(3) above). On disposal or liquidation of a foreign operation, the cumulative amount of exchange differences relating to that foreign operation are reclassified from equity and included in determining the profit or loss arising on disposal or liquidation.
Provisions and contingent liabilities	Provisions are recognised in respect of present obligations arising from past events where it is probable that outflows of resources will be required to settle the obligations and they can be reliably estimated. Contingent liabilities are possible obligations whose existence depends on the outcome of uncertain future events or those present obligations where the outflows of resources are uncertain or cannot be measured reliably. Contingent liabilities are not recognised in the financial statements but are disclosed unless they are remote. Provision is made for expected credit losses in respect of irrevocable undrawn loan commitments and financial guarantee contracts (see (H) above).
Share capital	Incremental costs directly attributable to the issue of new shares or options or to the acquisition of a business are shown in equity as a deduction, net of tax, from the proceeds. Dividends paid on the Group’s ordinary shares are recognised as a reduction in equity in the period in which they are paid.
Cash and cash equivalents	For the purposes of the cash flow statement, cash and cash equivalents comprise cash and non-mandatory balances with central banks and amounts due from banks with a maturity of less than three months.
Investment in subsidiaries	Investments in subsidiaries are carried at historical cost, less any provisions for impairment.
Discontinued operations	A discontinued operation is a cash generating unit or a group of cash generating units that has been disposed of, or is classified as held for sale, and (a) represents a separate major line of business or geographical area of operations, (b) is part of a single co-ordinated plan to dispose of a separate major line of business or geographical area of operations or (c) is a subsidiary acquired exclusively with a view to resale. The results after tax of discontinued operations are shown as a single line item on the face of the income statement.

CRITICAL ACCOUNTING JUDGEMENT_2

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of accounting judgements and estimates [Abstract]
Disclosure of Detailed Information about Allowance For Expected Credit Losses	Key judgements: Determining an appropriate definition of default against which a probability of default, exposure at default and loss given default parameter can be evaluated The appropriate lifetime of an exposure to credit risk for the assessment of lifetime losses, notably on revolving products Establishing the criteria for a significant increase in credit risk The use of management judgement alongside impairment modelling processes to adjust inputs, parameters and outputs to reflect risks not captured by models Key estimates: Base case and Multiple Economic Scenarios (MES) assumptions, including the rate of unemployment and the rate of change of house prices, required for creation of MES scenarios and forward looking credit parameters
Disclosure of Detailed Information about Significant Increase in Credit Risk	SICR Triggers for key Retail portfolios Origination grade 1 2 3 4 5 6 7 Mortgages SICR grade 5 5 6 7 8 9 10 Credit cards SICR grade 4 5 6 7 8 9 10 Loans and overdrafts SICR grade 5 6 7 8 9 10 11 RMS grade 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PD boundary % 0.10 0.40 0.80 1.20 2.50 4.50 7.50 10.00 14.00 20.00 30.00 45.00 99.99 100.00
Disclosure of Detailed Information about Total Impact on ECL per Scenario	First Second Third Fourth First Second Third Fourth Base case % % % % % % % % Gross domestic product (3.0) (18.8) 16.0 (1.9) (3.8) 5.6 3.6 1.5 UK Bank Rate 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 Unemployment rate 4.0 4.1 4.8 5.0 5.2 6.5 8.0 7.5 House price growth 2.8 2.6 7.2 5.9 5.5 4.7 (1.6) (3.8) Commercial real estate price growth (5.0) (7.8) (7.8) (7.0) (6.1) (2.9) (2.2) (1.7) 1 Gross domestic product presented quarter on quarter, house price growth and commercial real estate growth presented year on year - i.e. from the equivalent quarter the previous year. Bank Rate is presented end quarter. Scenarios by year Key annual assumptions made by the Group are shown below. Gross domestic product is presented as an annual change, house price growth and commercial real estate price growth are presented as the growth in the respective indices within the period. UK Bank Rate and unemployment rate are averages for the period. 2020 2021 2022 2023 2024 % % % % % Upside Gross domestic product (10.5) 3.7 5.7 1.7 1.5 UK Bank Rate 0.10 1.14 1.27 1.20 1.21 Unemployment rate 4.3 5.4 5.4 5.0 4.5 House price growth 6.3 (1.4) 5.2 6.0 5.0 Commercial real estate price growth (4.6) 9.3 3.9 2.1 0.3 Base case Gross domestic product (10.5) 3.0 6.0 1.7 1.4 UK Bank Rate 0.10 0.10 0.10 0.21 0.25 Unemployment rate 4.5 6.8 6.8 6.1 5.5 House price growth 5.9 (3.8) 0.5 1.5 1.5 Commercial real estate price growth (7.0) (1.7) 1.6 1.1 0.6 Downside Gross domestic product (10.6) 1.7 5.1 1.4 1.4 UK Bank Rate 0.10 0.06 0.02 0.02 0.03 Unemployment rate 4.6 7.9 8.4 7.8 7.0 House price growth 5.6 (8.4) (6.5) (4.7) (3.0) Commercial real estate price growth (8.7) (10.6) (3.2) (0.8) (0.8) Severe downside Gross domestic product (10.8) 0.3 4.8 1.3 1.2 UK Bank Rate 0.10 0.00 0.00 0.01 0.01 Unemployment rate 4.8 9.9 10.7 9.8 8.7 House price growth 5.3 (11.1) (12.5) (10.7) (7.6) Commercial real estate price growth (11.0) (21.4) (9.8) (3.9) (0.8)
Disclosure of Detailed Information about Economic Assumptions	At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe % % % % % % % % Gross domestic product 0.3 0.1 (0.4) (0.8) 1.6 1.3 1.0 0.3 UK Bank Rate 0.98 0.15 0.05 0.02 1.87 1.15 0.51 0.17 Unemployment rate 5.0 5.9 7.1 8.8 3.9 4.3 5.5 6.7 House price growth 4.2 1.1 (3.5) (7.5) 5.1 1.4 (2.5) (7.0) Commercial real estate price growth 2.1 (1.1) (4.9) (9.7) 1.6 (0.3) (3.9) (7.3) Economic assumptions - start to peak At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe % % % % % % % % Gross domestic product 1.4 0.8 (1.7) (3.0) 8.4 6.6 5.5 1.8 UK Bank Rate 1.44 0.25 0.10 0.10 2.56 1.75 0.75 0.75 Unemployment rate 6.5 8.0 9.3 11.5 4.4 4.6 6.9 8.3 House price growth 22.6 5.9 5.6 5.3 28.3 7.1 2.7 2.7 Commercial real estate price growth 11.0 (2.7) (2.7) (2.7) 8.8 (0.8) (0.8) (0.8) Economic assumptions - start to trough At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe % % % % % % % % Gross domestic product (21.2) (21.2) (21.2) (21.2) 0.3 0.3 0.3 (2.4) UK Bank Rate 0.10 0.10 0.01 0.00 0.75 0.75 0.35 0.01 Unemployment rate 4.0 4.0 4.0 4.0 3.4 3.8 3.8 3.8 House price growth (0.5) (0.5) (16.4) (32.4) 1.5 0.0 (12.0) (30.3) Commercial real estate price growth (6.9) (9.0) (22.2) (39.9) (1.4) (2.3) (17.9) (31.4)
Disclosure of Detailed Information about ECL Sensitivity to Economic Assumptions	At 31 December 2020 At 31 December 2019 Base case Probability Difference Base case Probability Difference Impact of multiple economic scenarios £m £m £m £m £m £m UK mortgages 803 1,027 224 464 569 105 Other Retail 2,310 2,368 58 1,492 1,521 29 Commercial Banking 2,102 2,315 213 1,206 1,263 57 Other 422 422 — 27 27 — 5,637 6,132 495 3,189 3,380 191 At 31 December 2020 At 31 December 2019 Probability- Upside Base case Downside Severe Probability- Upside Base case Downside Severe £m £m £m £m £m £m £m £m £m £m UK mortgages 1,027 614 803 1,237 2,306 569 317 464 653 1,389 Other Retail 2,368 2,181 2,310 2,487 2,745 1,521 1,443 1,492 1,564 1,712 Commercial Banking 2,315 1,853 2,102 2,575 3,554 1,263 1,163 1,206 1,327 1,535 Other 422 420 422 422 428 27 27 27 27 27 ECL allowance 6,132 5,068 5,637 6,721 9,033 3,380 2,950 3,189 3,571 4,663 At 31 December 2020 At 31 December 2019 Upside Base case Downside Severe Upside Base case Downside Severe £m £m £m £m £m £m £m £m UK mortgages 602 797 1,269 2,578 311 461 670 1,667 Other Retail 2,154 2,299 2,509 2,819 1,435 1,486 1,570 1,740 Commercial Banking 1,842 2,079 2,629 3,985 1,154 1,202 1,335 1,573 Other 420 421 422 429 27 27 27 27 ECL allowance 5,018 5,596 6,829 9,811 2,927 3,176 3,602 5,007 At 31 December 2020 At 31 December 2019 10pp increase 10pp decrease 10pp increase 10pp decrease ECL impact, £m (206) 284 (110) 147 At 31 December 2020 At 31 December 2019 1pp increase in 1pp decrease in 1pp increase in 1pp decrease in £m £m £m £m UK mortgages 25 (23) 33 (34) Other Retail 54 (54) 39 (54) Commercial Banking 123 (110) 68 (54) Other 1 (1) 1 (1) ECL impact 203 (188) 141 (143)
Disclosure of Detailed Information about Application of Judgement in Adjustments to Modelled ECL	Modelled Individually Judgements 1 Other Total ECL £m £m £m £m £m At 31 December 2020 UK mortgages 481 — 36 510 1,027 Other Retail 2,060 — 321 (13) 2,368 Commercial Banking 1,021 1,215 81 (2) 2,315 Other 22 — 400 — 422 Total 3,584 1,215 838 495 6,132 At 31 December 2019 UK mortgages 386 — — 183 569 Other Retail 1,531 — — (10) 1,521 Commercial Banking 471 812 — (20) 1,263 Other 27 — — — 27 Total 2,415 812 — 153 3,380 1 Judgements introduced in 2020 due to the impact that COVID-19 and resulting interventions have had on the Group’s economic outlook and observed loss experience, which have required additional model limitations to be addressed.
Disclosure of Detailed Information about Defined Benefit Pension Scheme Obligations	Key estimates: Discount rate applied to future cash flows Expected lifetime of the schemes' members
Disclosure of Detailed Information about Recoverability of Deferred Tax Assets and Uncertain Tax Positions	Key judgements: Assessing the likely level of future taxable profits taking into account the Group’s long-term financial and strategic plans Interpreting tax rules on the Group’s open tax matters
Disclosure of Detailed Information about Regulatory Positions	Key judgements: Determining the scope of reviews required by regulators The impact of legal decisions that may be relevant to claims received Key estimates: The number of future complaints The proportion of complaints that will be upheld The average cost of redress
Disclosure of Detailed Information about Fair Value of Financial Instruments	Key estimates: Interest rate spreads, earnings multiples and interest rate volatility
Disclosure of Detailed Information about Recoverability of Goodwill and Other Intangible Assets	Key judgements: Assessing future trading conditions that could affect the Group’s business operations Assessing whether certain of the Group’s purchased brands have an indefinite life Key estimates: The value-in-use calculations require management to estimate future cash flows, appropriate discount rates for those cash flows and long-term sustainable growth rates Estimated useful life of internally generated capitalised software

SEGMENTAL ANALYSIS (Tables)

SEGMENTAL ANALYSIS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of operating segments [abstract]
Schedule of Operating Segments	Retail Commercial Other Group £m £m £m £m Year ended 31 December 2020 Net interest income 8,321 2,300 149 10,770 Other income 1,735 673 1,407 3,815 Total income 10,056 2,973 1,556 14,585 Costs (5,816) (1,673) (1,707) (9,196) Impairment charge (2,384) (1,280) (396) (4,060) Profit (loss) before tax 1,856 20 (547) 1,329 External income 11,859 2,496 230 14,585 Inter-segment income (1,803) 477 1,326 — Segment income 10,056 2,973 1,556 14,585 Segment external assets 359,171 83,155 157,613 599,939 Segment external liabilities 295,216 126,008 137,597 558,821 Analysis of segment other income: Current accounts 497 109 4 610 Credit and debit card fees 517 231 — 748 Commercial banking fees — 169 — 169 Private banking and asset management — — 1 1 Factoring — 76 — 76 Other fees and commissions 63 157 100 320 Fees and commissions receivable 1,077 742 105 1,924 Fees and commissions payable (571) (195) (143) (909) Net fee and commission income 506 547 (38) 1,015 Operating lease rental income 1,104 16 — 1,120 Gains less losses on disposal of financial assets at fair value through other comprehensive income — — 145 145 Other income 125 110 1,300 1,535 Segment other income 1,735 673 1,407 3,815 Other segment items reflected in income statement above: Depreciation and amortisation 1,760 242 668 2,670 Defined benefit scheme charges 97 28 122 247 Other segment items: Additions to fixed assets 1,684 89 1,042 2,815 Investments in joint ventures and associates at end of year 4 — — 4 Retail Commercial Other Group £m £m £m £m Year ended 31 December 2019 1 Net interest income 9,129 2,691 400 12,220 Other income 2,025 870 1,493 4,388 Total income 11,154 3,561 1,893 16,608 Costs (7,912) (1,818) (1,393) (11,123) Impairment charge (1,038) (313) (11) (1,362) Profit before tax 2,204 1,430 489 4,123 External income 13,111 2,773 724 16,608 Inter-segment income (1,957) 788 1,169 — Segment income 11,154 3,561 1,893 16,608 Segment external assets 351,301 89,630 140,437 581,368 Segment external liabilities 261,019 125,240 156,210 542,469 Analysis of segment other income: Current accounts 518 133 5 656 Credit and debit card fees 634 327 — 961 Commercial banking fees — 166 — 166 Private banking and asset management — — 38 38 Factoring — 103 — 103 Other fees and commissions 68 219 152 439 Fees and commissions receivable 1,220 948 195 2,363 Fees and commissions payable (571) (299) (157) (1,027) Net fee and commission income 649 649 38 1,336 Operating lease rental income 1,225 22 — 1,247 Gains less losses on disposal of financial assets at fair value through other comprehensive income — (5) 201 196 Other income 151 204 1,254 1,609 Segment other income 2,025 870 1,493 4,388 Other segment items reflected in income statement above: Depreciation and amortisation 1,712 315 575 2,602 Defined benefit scheme charges 108 43 94 245 Other segment items: Additions to fixed assets 2,208 247 1,097 3,552 Investments in joint ventures and associates at end of year 3 — — 3 1 Restated, see page F-31. Retail Commercial Other Continuing £m £m £m £m Year ended 31 December 2018 1 Net interest income 9,379 2,893 482 12,754 Other income 1,922 1,447 851 4,220 Total income 11,301 4,340 1,333 16,974 Costs (7,709) (2,160) (1,899) (11,768) Impairment (charge) credit (861) (80) 15 (926) Profit (loss) before tax 2,731 2,100 (551) 4,280 External income 12,924 3,722 328 16,974 Inter-segment income (1,623) 618 1,005 — Segment income 11,301 4,340 1,333 16,974 Segment external assets 349,755 115,444 128,325 593,524 Segment external liabilities 261,457 137,172 155,145 553,774 Analysis of segment other income: Current accounts 503 139 5 647 Credit and debit card fees 646 328 — 974 Commercial banking fees — 271 — 271 Private banking and asset management — 2 92 94 Factoring — 83 — 83 Other fees and commissions 57 248 123 428 Fees and commissions receivable 1,206 1,071 220 2,497 Fees and commissions payable (757) (310) (161) (1,228) Net fee and commission income 449 761 59 1,269 Operating lease rental income 1,305 36 — 1,341 Gains less losses on disposal of financial assets at fair value through other comprehensive income — — 268 268 Other income 168 650 524 1,342 Segment other income 1,922 1,447 851 4,220 Other segment items reflected in income statement above: Depreciation and amortisation 1,573 278 498 2,349 Defined benefit scheme charges 121 48 231 400 Other segment items: Additions to fixed assets 2,092 208 1,078 3,378 Investments in joint ventures and associates at end of year 4 — 1 5 1 Restated, see page F-31.

NET INTEREST INCOME (Tables)

NET INTEREST INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of interest income (expense) [Abstract]
Schedule of Net Interest Income	Weighted average 2020 2019 2018 2020 2019 2018 % % % £m £m £m Interest income: Loans and advances to customers 2.76 3.21 3.23 13,358 15,281 15,049 Loans and advances to banks 0.20 0.57 0.76 114 269 462 Debt securities 1.82 2.26 1.61 92 118 66 Interest income on financial assets held at amortised cost 2.48 2.97 2.93 13,564 15,668 15,577 Financial assets at fair value through other comprehensive income 1.12 1.64 1.98 302 430 639 Total interest income 1 2.42 2.90 2.88 13,866 16,098 16,216 Interest expense: Deposits from banks, excluding liabilities under sale and repurchase transactions 1.19 1.39 1.36 (82) (87) (81) Customer deposits, excluding liabilities under sale and repurchase transactions 0.40 0.65 0.60 (1,270) (2,054) (1,997) Debt securities in issue 2 1.13 0.71 0.10 (761) (476) (66) Subordinated liabilities 7.19 9.89 10.18 (827) (921) (1,072) Lease liabilities 2.36 2.41 2.44 (39) (39) (1) Liabilities under sale and repurchase agreements 0.36 1.08 0.87 (117) (301) (245) Total interest expense 3 0.71 0.91 0.78 (3,096) (3,878) (3,462) Net interest income 10,770 12,220 12,754 1 Includes £10 million (2019: £26 million; 2018: £31 million) of interest income on liabilities with negative interest rates and £42 million (2019: £39 million; 2018: £45 million) in respect of interest income on finance leases. 2 The impact of the Group’s hedging arrangements is included on this line; excluding this impact the weighted average effective interest rate in respect of debt securities in issue would be 2.42 per cent (2019: 2.25 per cent; 2018: 2.74 per cent). 3 Includes £23 million (2019: £119 million; 2018: £10 million) of interest expense on assets with negative interest rates.

NET FEE AND COMMISSION INCOME (

NET FEE AND COMMISSION INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of fee and commission income (expense) [Abstract]
Schedule of Fee and Commission Income	2020 2019 2018 £m £m £m Fee and commission income: Current accounts 610 656 647 Credit and debit card fees 748 961 974 Commercial banking fees 169 166 271 Private banking and asset management 1 38 94 Factoring 76 103 83 Other fees and commissions 320 439 428 Total fee and commission income 1,924 2,363 2,497 Fee and commission expense (909) (1,027) (1,228) Net fee and commission income 1,015 1,336 1,269

NET TRADING INCOME (Tables)

NET TRADING INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of trading income (expense) [Abstract]
Disclosure of Detailed Information about Net Trading Income (Expense)	2020 2019 2018 £m £m £m Foreign exchange translation gains (losses) 74 (203) 132 Gains on foreign exchange trading transactions 326 336 235 Total foreign exchange 400 133 367 Investment property losses (note 21) (20) (8) — Securities and other gains (see below) 370 235 41 Net trading income 750 360 408
Disclosure of Detailed Information about Net Gains (Losses) on Assets and Liabilities at Fair Value Through Profit And Loss	Securities and other gains comprise net gains (losses) arising on assets and liabilities held at fair value through profit or loss as follows: 2020 2019 2018 £m £m £m Net income arising on assets and liabilities mandatorily held at fair value through profit or loss: Financial instruments held for trading 440 427 127 Other financial instruments mandatorily held at fair value through profit or loss: Debt securities, loans and advances 37 25 11 Equity shares 9 (3) 86 486 449 224 Net expense arising on assets and liabilities designated at fair value through profit or loss (116) (214) (183) Securities and other gains 370 235 41

OTHER OPERATING INCOME (Tables)

OTHER OPERATING INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
Other operating income
OTHER OPERATING INCOME (Tables) [Line Items]
Schedule of Other Operating Income	2020 2019 2018 £m £m £m Operating lease rental income 1,120 1,247 1,341 Gains less losses on disposal of financial assets at fair value through other comprehensive income (note 34) 145 196 268 Liability management (216) (101) — Share of results of joint ventures and associates — — 5 Intercompany recharges and other 1,001 1,350 929 Total other operating income 2,050 2,692 2,543

OPERATING EXPENSES (Tables)

OPERATING EXPENSES (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of expenses [Abstract]
Schedule of Operating Expenses	2020 2019 2018 £m £m £m Staff costs: Salaries 2,382 2,370 2,379 Performance-based compensation 106 340 485 Social security costs 271 308 330 Pensions and other post-retirement benefit schemes (note 28) 552 518 688 Restructuring costs 161 89 247 Other staff costs 143 360 444 3,615 3,985 4,573 Premises and equipment: Rent and rates 115 114 364 Repairs and maintenance 172 182 189 Other 1 138 150 126 425 446 679 Other expenses: Communications and data processing 996 1,022 1,116 Advertising and promotion 184 173 192 Professional fees 128 144 230 Other 760 561 673 2,068 1,900 2,211 Depreciation and amortisation: Depreciation of property, plant and equipment (note 21) 2,017 2,040 1,849 Amortisation of other intangible assets (note 20) 653 562 500 2,670 2,602 2,349 Goodwill impairment (note 19) 4 — — Total operating expenses, excluding regulatory provisions 8,782 8,933 9,812 Regulatory provisions: Payment protection insurance provision (note 30) 85 1,795 1,395 Other regulatory provisions (note 30) 329 395 561 414 2,190 1,956 Total operating expenses 9,196 11,123 11,768 1 Net of profits on disposal of operating lease assets of £127 million (2019: £41 million; 2018: £60 million).
Schedule of Average Number of Persons Employed by the Group	The average number of persons on a headcount basis employed by the Group during the year was as follows: 2020 2019 2018 UK 67,115 69,321 71,017 Overseas 515 762 769 Total 67,630 70,083 71,786

AUDITORS' REMUNERATION (Tables)

AUDITORS' REMUNERATION (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of transactions between related parties [Line items]
Schedule of Fees Payable to Auditors	During the year the auditors earned the following fees: 2020 2019 2018 £m £m £m Fees payable for the audit of the Bank’s current year annual report 4.5 4.2 3.8 Fees payable for other services: Audit of the Bank’s subsidiaries pursuant to legislation 8.9 8.6 10.2 Other services supplied pursuant to legislation 1.6 1.3 1.5 Other services – audit-related fees 0.3 0.2 — All other services 0.9 0.3 0.1 Total fees payable to the Bank’s auditors 16.2 14.6 15.6
Entities outside of Lloyds
Disclosure of transactions between related parties [Line items]
Schedule of Fees Payable to Auditors	During the year the auditors also earned fees payable by entities outside the consolidated Lloyds Bank Group in respect of the following: 2020 2019 2018 £m £m £m Audits of Group pension schemes 0.1 0.1 0.1 Audits of the unconsolidated Open Ended Investment Companies managed by the Group — — 0.1 Reviews of the financial position of corporate and other borrowers 1.3 — 0.4

IMPAIRMENT (Tables)

IMPAIRMENT (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of impairment loss and reversal of impairment loss [abstract]
Schedule of Impairment	Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m Year ended 31 December 2020 Impact of transfers between stages (168) 925 699 — 1,456 Other changes in credit quality 909 6 1,164 167 2,246 Additions (repayments) 77 173 (52) (30) 168 Methodology and model changes (31) 170 26 — 165 Other items — — 25 — 25 955 349 1,163 137 2,604 Total impairment 787 1,274 1,862 137 4,060 In respect of: Loans and advances to banks 4 — — — 4 Loans and advances to customers 678 1,130 1,853 137 3,798 Due from fellow Lloyds Banking Group undertakings — — — — — Financial assets at amortised cost 682 1,130 1,853 137 3,802 Other assets — — — — — Impairment charge on drawn balances 682 1,130 1,853 137 3,802 Loan commitments and financial guarantees 100 144 9 — 253 Financial assets at fair value through other comprehensive income 5 — — — 5 Total impairment 787 1,274 1,862 137 4,060 Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m Year ended 31 December 2019 Impact of transfers between stages (17) 89 532 — 604 Other changes in credit quality 6 2 939 (106) 841 Additions (repayments) 93 (41) (60) (87) (95) Methodology and model changes 33 (27) 8 — 14 Other items (5) — 3 — (2) 127 (66) 890 (193) 758 Total impairment 110 23 1,422 (193) 1,362 In respect of: Loans and advances to banks — — — — — Loans and advances to customers 141 10 1,382 (193) 1,340 Due from fellow Lloyds Banking Group undertakings (1) — 41 — 40 Financial assets at amortised cost 140 10 1,423 (193) 1,380 Other assets — — — — — Impairment charge on drawn balances 140 10 1,423 (193) 1,380 Loan commitments and financial guarantees (29) 13 (1) — (17) Financial assets at fair value through other comprehensive income (1) — — — (1) Total impairment 110 23 1,422 (193) 1,362 Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m Year ended 31 December 2018 Impact of transfers between stages (10) 18 445 — 453 Other changes in credit quality (23) (14) 545 69 577 Additions (repayments) 19 (84) 27 (69) (107) Methodology and model changes (71) (21) 72 — (20) Other items (13) — 36 — 23 (88) (119) 680 — 473 Total impairment (98) (101) 1,125 — 926 In respect of: Loans and advances to banks 1 — — — 1 Loans and advances to customers (65) (53) 1,129 — 1,011 Financial assets at amortised cost (64) (53) 1,129 — 1,012 Impairment charge on drawn balances (64) (53) 1,129 — 1,012 Loan commitments and financial guarantees (20) (48) (4) — (72) Financial assets at fair value through other comprehensive income (14) — — — (14) Total impairment (98) (101) 1,125 — 926

TAX EXPENSE (Tables)

TAX EXPENSE (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of income tax [Abstract]
Schedule of Tax Charges	2020 2019 2018 £m £m £m UK corporation tax: Current tax on profit for the year (423) (1,279) (1,108) Adjustments in respect of prior years 336 98 (10) (87) (1,181) (1,118) Foreign tax: Current tax on profit for the year (18) (58) (24) Adjustments in respect of prior years 24 4 — 6 (54) (24) Current tax expense (81) (1,235) (1,142) Deferred tax: Current year 508 (110) (234) Adjustments in respect of prior years (290) 58 (1) Deferred tax credit (expense) 218 (52) (235) Tax credit (expense) 137 (1,287) (1,377)
Schedule of Reconciliation of the Charge Resulting from Applying the Standard UK Corporation Tax Rate	An explanation of the relationship between tax credit (expense) and accounting profit is set out below: 2020 2019 2018 £m £m £m Profit before tax from continuing operations 1,329 4,123 4,280 UK corporation tax thereon (253) (783) (813) Impact of surcharge on banking profits (122) (377) (388) Non-deductible costs: conduct charges (24) (283) (189) Non-deductible costs: bank levy (30) — — Other non-deductible costs (62) (77) (74) Non-taxable income 37 36 25 Tax relief on coupons on other equity instruments 79 53 52 Tax-exempt gains on disposals — 25 11 Tax losses where no deferred tax recognised (3) (7) (9) Remeasurement of deferred tax due to rate changes 435 (25) 18 Differences in overseas tax rates 10 (9) 1 Adjustments in respect of prior years 70 160 (11) Tax credit (expense) on profit from continuing operations 137 (1,287) (1,377)

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	12 Months Ended
	Dec. 31, 2020
DISCONTINUED OPERATIONS (Tables) [Line Items]
Schedule of Discontinued Net Trading Income	7 NET TRADING INCOME 2020 2019 2018 £m £m £m Foreign exchange translation gains (losses) 74 (203) 132 Gains on foreign exchange trading transactions 326 336 235 Total foreign exchange 400 133 367 Investment property losses (note 21) (20) (8) — Securities and other gains (see below) 370 235 41 Net trading income 750 360 408 Securities and other gains comprise net gains (losses) arising on assets and liabilities held at fair value through profit or loss as follows: 2020 2019 2018 £m £m £m Net income arising on assets and liabilities mandatorily held at fair value through profit or loss: Financial instruments held for trading 440 427 127 Other financial instruments mandatorily held at fair value through profit or loss: Debt securities, loans and advances 37 25 11 Equity shares 9 (3) 86 486 449 224 Net expense arising on assets and liabilities designated at fair value through profit or loss (116) (214) (183) Securities and other gains 370 235 41
Discontinued operations
DISCONTINUED OPERATIONS (Tables) [Line Items]
Schedule of Results of Discontinued Operations	The results of the discontinued operations in 2018 were as follows: 2018 £ million Interest and similar income 14 Interest and similar expense (3) Net interest income 11 Fee and commission income 106 Fee and commission expense (180) Net fee and commission income (74) Net trading income (see (a) below) (790) Insurance premium income (see (b) below) 2,714 Other operating income 205 Other income 2,055 Total income 2,066 Insurance claims (see (c) below) (1,363) Total income, net of insurance claims 703 Operating expenses (333) Profit on disposal of the discontinued operations 1,010 Profit before tax 1,380 Taxation (66) Profit after tax from discontinued operations 1,314
Schedule of Discontinued Net Trading Income	2018 £m Foreign exchange translation gains 31 Gains on foreign exchange trading transactions — Total foreign exchange 31 Investment property gains 45 Securities and other gains (see below) (866) Net trading income (790)
Schedule of Discontinued Securities and Other Gains Held For Trading	Securities and other gains comprised net gains arising on assets and liabilities held at fair value through profit or loss and for trading as follows: 2018 £m Net income arising on assets designated at fair value through profit or loss: Debt securities, loans and advances (426) Equity shares (535) Total net gains arising on assets designated at fair value through profit or loss (961) Net gains on financial instruments held for trading 95 Securities and other gains (866)
Schedule of Discontinued Insurance Premium Income	2018 £m Life insurance Gross premiums: Life and pensions 2,198 Annuities 366 2,564 Ceded reinsurance premiums (73) Net earned premiums 2,491 Non-life insurance Net earned premiums 223 Total net earned premiums 2,714
Schedule of Discontinued Insurance Claims	2018 Insurance claims comprise: £m Life insurance and participating investment contracts Claims and surrenders (2,788) Change in insurance and participating investment contracts 1,533 Change in non-participating investment contracts (73) (1,328) Reinsurers’ share 86 (1,242) Change in unallocated surplus 14 Total life insurance and participating investment contracts (1,228) Non-life insurance Total non-life insurance claims, net of reinsurance (135) Total insurance claims (1,363) Life insurance and participating investment contracts gross claims and surrenders can also be analysed as follows: Deaths (267) Maturities (393) Surrenders (1,734) Annuities (336) Other (58) Total life insurance gross claims and surrenders (2,788)
Schedule of Impact of Discontinued Operations on the Cash Flow Statement	The impact of the discontinued operations on the Group’s cash flow statements was as follows: 2018 £m Net cash used in operating activities (1,715) Net cash from investing activities 60 Net cash used in financing activities (682) Change in cash and cash equivalents (2,337)

FINANCIAL ASSETS AT FAIR VALU_3

FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Tables) - Financial assets at fair value through profit or loss	12 Months Ended
	Dec. 31, 2020
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Tables) [Line Items]
Schedule of Financial Assets at Fair Value Through Profit or Loss	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Trading assets — 290 — 290 Other financial assets mandatorily at fair value through profit or loss 1,674 1,994 1,724 413 Total 1,674 2,284 1,724 703
Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss	These assets are comprised as follows: The Group The Bank 2020 2019 2020 2019 Trading Other Trading Other Trading Other Trading Other £m £m £m £m £m £m £m £m Loans and advances to customers — 1,511 — 1,782 — 517 — 362 Debt securities: Government securities — — 290 — — — 290 — Corporate and other debt securities — — — 47 — 1,203 — 47 — — 290 47 — 1,203 290 47 Equity shares — 163 — 165 — 4 — 4 Total — 1,674 290 1,994 — 1,724 290 413

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Amount, Timing and Uncertainty of Future Cash Flows	Details of the Group’s hedging instruments are set out below: Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Group - At 31 December 2020 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 36 36 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 6,032 6,031 37,531 116,487 19,877 185,958 Average fixed interest rate 2.01% 1.69% 1.49% 1.23% 2.07% Cash flow hedges Foreign exchange Currency swap Notional 28 102 408 941 2,551 4,030 Average USD/GBP exchange rate 1.30 1.31 1.30 1.32 1.32 Interest rate Interest rate swap Notional 5,026 11,449 41,348 164,893 94,060 316,776 Average fixed interest rate 1.09% 1.05% 1.18% 1.57% 2.36% Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Group - At 31 December 2019 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 34 34 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 331 9,305 37,948 91,535 21,823 160,942 Average fixed interest rate 2.58% 1.74% 1.22% 1.78% 2.72% Cash flow hedges Foreign exchange Currency swap Notional — 364 390 1,766 5,073 7,593 Average EUR/GBP exchange rate — — 1.21 1.10 — Average USD/GBP exchange rate — 1.33 1.36 1.30 1.30 Interest rate Interest rate swap Notional 9,395 23,424 57,950 205,603 121,346 417,718 Average fixed interest rate 1.06% 1.23% 1.29% 1.48% 2.43% Details of the Bank’s hedging instruments are set out below: Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Bank - At 31 December 2020 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 36 36 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 2,421 489 3,386 31,239 20,495 58,030 Average fixed interest rate 1.94% 1.67% 2.13% 1.82% 1.89% Cash flow hedges Foreign exchange Currency swap Notional 25 130 296 165 — 616 Average EUR/GBP exchange rate — — 1.13 1.11 — Average USD/GBP exchange rate 1.30 1.30 1.31 1.34 — Interest rate Interest rate swap Notional 844 4,363 9,375 67,534 11,237 93,353 Average fixed interest rate 1.40% 1.07% 1.00% 1.47% 2.33% Maturity Up to 1 month 1-3 months 3-12 months 1-5 years Over 5 years Total The Bank - At 31 December 2019 £m £m £m £m £m £m Fair value hedges Interest rate Cross currency swap Notional — — — — 34 34 Average fixed interest rate — — — — 1.28% Average EUR/GBP exchange rate — — — — 1.38 Interest rate swap Notional 331 1,445 8,378 34,930 21,749 66,833 Average fixed interest rate 2.58% 2.39% 1.49% 1.82% 2.24% Cash flow hedges Foreign exchange Currency swap Notional 53 210 539 299 — 1,101 Average EUR/GBP exchange rate — — 1.15 1.11 — Average USD/GBP exchange rate 1.37 1.38 1.36 1.36 — Interest rate Interest rate swap Notional 3,473 6,771 22,444 66,892 30,897 130,477 Average fixed interest rate 1.10% 1.58% 1.57% 1.41% 1.93%
Fair value
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Derivative Instruments	The fair values and notional amounts of derivative instruments are set out in the following table: 2020 2019 Contract/ Fair value Fair value Contract/ Fair value Fair value The Group £m £m £m £m £m £m Trading and other Exchange rate contracts: Spot, forwards and futures 15,055 360 124 11,066 272 142 Currency swaps 147,303 1,314 1,650 156,224 1,184 2,492 Options purchased 12 — — 681 9 — Options written 12 — — 681 — 9 162,382 1,674 1,774 168,652 1,465 2,643 Interest rate contracts: Interest rate swaps 1,312,974 5,872 5,421 1,822,407 5,779 5,685 Forward rate agreements 81,305 — 3 30,192 1 2 Options purchased 3,745 55 — 4,124 77 — Options written 3,064 — 62 3,682 — 78 1,401,088 5,927 5,486 1,860,405 5,857 5,765 Credit derivatives 5,362 65 120 7,546 39 99 Equity and other contracts 50 1 258 338 16 295 Total derivative assets/liabilities - trading and other 1,568,882 7,667 7,638 2,036,941 7,377 8,802 Hedging Derivatives designated as fair value hedges: Currency swaps 36 11 — 34 8 — Interest rate swaps 185,958 336 255 160,942 696 229 185,994 347 255 160,976 704 229 Derivatives designated as cash flow hedges: Interest rate swaps 316,776 290 262 417,718 343 736 Currency swaps 4,030 37 73 7,593 70 64 320,806 327 335 425,311 413 800 Total derivative assets/liabilities - hedging 506,800 674 590 586,287 1,117 1,029 Total recognised derivative assets/liabilities 2,075,682 8,341 8,228 2,623,228 8,494 9,831 2020 2019 Contract/ Fair value Fair value Contract/ Fair value Fair value The Bank £m £m £m £m £m £m Trading and other Exchange rate contracts: Spot, forwards and futures 14,117 268 83 8,564 154 123 Currency swaps 168,605 1,683 1,960 183,675 1,401 2,748 Options purchased 12 — — 682 9 — Options written 11 — — 682 — 9 182,745 1,951 2,043 193,603 1,564 2,880 Interest rate contracts: Interest rate swaps 1,762,919 10,287 8,562 2,370,877 11,714 10,776 Forward rate agreements 84,245 — 4 30,192 1 2 Options purchased 3,824 56 — 4,176 78 — Options written 3,025 — 75 3,697 — 89 1,854,013 10,343 8,641 2,408,942 11,793 10,867 Credit derivatives 5,407 59 99 4,618 59 182 Equity and other contracts 3 — — 368 15 15 Total derivative assets/liabilities - trading and other 2,042,168 12,353 10,783 2,607,531 13,431 13,944 Hedging Derivatives designated as fair value hedges: Currency swaps 36 11 — 34 8 — Interest rate swaps 58,030 217 221 66,833 153 213 58,066 228 221 66,867 161 213 Derivatives designated as cash flow hedges: Interest rate swaps 93,353 11 42 130,477 9 35 Currency swaps 616 3 26 1,101 37 19 93,969 14 68 131,578 46 54 Total derivative assets/liabilities - hedging 152,035 242 289 198,445 207 267 Total recognised derivative assets/liabilities 2,194,203 12,595 11,072 2,805,976 13,638 14,211
Swaps
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of the Effects of Hedge Accounting on Swaps	The carrying amounts of the Group’s hedging instruments are as follows: Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Group - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Currency swaps 36 11 — 1 Interest rate swaps 185,958 336 255 (88) Cash flow hedges Foreign exchange Currency swaps 4,030 37 73 (64) Interest rate Interest rate swaps 316,776 290 262 527 Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Group - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Currency swaps 34 8 — 2 Interest rate swaps 160,942 696 229 351 Cash flow hedges Foreign exchange Currency swaps 7,593 70 64 (141) Interest rate Interest rate swaps 417,718 343 736 920 The carrying amounts of the Bank’s hedging instruments are as follows: Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Bank - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Currency swaps 36 11 — 1 Interest rate swaps 58,030 217 221 (226) Cash flow hedges Foreign exchange Currency swaps 616 3 26 4 Interest rate Interest rate swaps 93,353 11 42 130 Carrying amount of the hedging instrument Contract/ Assets Liabilities Changes in fair The Bank - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Currency swaps 34 8 — 2 Interest rate swaps 66,833 153 213 118 Cash flow hedges Foreign exchange Currency swaps 1,101 37 19 (31) Interest rate Interest rate swaps 130,477 9 35 777
Debt securities
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of - the Effects of Hedge Accounting, Amounts Reclassified from Reserves to Income Statement	The Group’s hedged items are as follows: Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Group - At 31 December 2020 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 1 125,183 — 661 — 355 Fixed rate issuance 2 — 37,323 — 1,357 (179) Fixed rate borrowings 3 — 1,404 — 304 (184) Fixed rate bonds 4 24,111 — 1,178 — 641 Cash flow hedges Foreign exchange Foreign currency issuance 2 (8) (40) 64 Customer deposits 5 74 13 (41) Interest rate Customer loans 1 (508) 1,918 (2) Central bank balances 6 (71) 19 270 Customer deposits 5 38 (233) 97 Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Group - At 31 December 2019 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 1 83,818 — 154 — (73) Fixed rate issuance 2 — 47,689 — 1,590 (326) Fixed rate borrowings 3 — 1,272 — 136 (206) Fixed rate bonds 4 21,354 — 660 — 405 Cash flow hedges Foreign exchange Foreign currency issuance 2 28 (20) 90 Customer deposits 5 116 18 (48) Interest rate Customer loans 1 (657) 1,226 531 Central bank balances 6 (220) 85 163 Customer deposits 5 (1) (40) 6 1 Included within loans and advances to customers. 2 Included within debt securities in issue. 3 Included within amounts due to fellow Lloyds Banking Group undertakings. 4 Included within financial assets at fair value through other comprehensive income. 5 Included within customer deposits. 6 Included within cash and balances at central banks. The Bank’s hedged items are as follows: Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Bank - At 31 December 2020 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate issuance 1 — 32,044 — 793 (243) Fixed rate borrowings 2 — 1,404 — 304 (184) Fixed rate bonds 3 23,239 — 1,158 — 625 Cash flow hedges Foreign exchange Foreign currency issuance 1 (4) (49) 16 Interest rate Customer loans 4 (119) 1,486 281 Central bank balances5 — — 324 Customer deposits 6 15 (189) 3 Carrying amount of Accumulated amount of Change in Cash flow hedge reserve Continuing Discontinued Assets Liabilities Assets Liabilities The Bank - At 31 December 2019 £m £m £m £m £m £m £m Fair value hedges Interest rate Fixed rate issuance 1 — 40,557 — 565 (357) Fixed rate borrowings 2 — 1,272 — 136 (206) Fixed rate bonds 3 20,632 — 655 — 400 Cash flow hedges Foreign exchange Foreign currency issuance 1 31 (38) 7 Interest rate Customer loans 4 (344) 1,037 881 Central bank balances 5 (388) — 441 Customer deposits 6 (1) (126) (58) 1 Included within debt securities in issue. 2 Included within amounts due to fellow Lloyds Banking Group undertakings. 3 Included within financial assets at fair value through other comprehensive income. 4 Included within loans and advances to customers. 5 Included within cash and balances at central banks. 6 Included within customer deposits.
Change in fair value of hedged item for ineffectiveness assessment
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of - the Effects of Hedge Accounting, Amounts Reclassified from Reserves to Income Statement	Gains and losses arising from hedge accounting are summarised as follows: Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Group - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 571 Fixed rate issuance (35) Fixed rate borrowings 1 Fixed rate bonds 9 Cash flow hedges Foreign exchange Foreign currency issuance (45) — (6) (47) Interest expense Customer deposits 3 — — 9 Interest expense Interest rate Customer loans 23 262 — (633) Interest income Central bank balances 28 (3) — (95) Interest income Customer deposits (27) — — 45 Interest expense Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Group - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages 186 Fixed rate issuance (28) Fixed rate borrowings 6 Fixed rate bonds (11) Cash flow hedges Foreign exchange Foreign currency issuance (202) — (101) (73) Interest expense Customer deposits (22) — — 6 Interest expense Interest rate Customer loans 616 99 — (367) Interest income Central bank balances 194 32 — (52) Interest income Customer deposits — — — 7 Interest expense 1 Hedge ineffectiveness is included in the income statement within net trading income. Gains and losses arising from hedge accounting are summarised as follows: Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Bank - At 31 December 2020 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages — Fixed rate issuance (35) Fixed rate bonds 8 Fixed rate borrowings — Cash flow hedges Foreign exchange Foreign currency issuance (1) — (1) (4) Interest expense Interest rate Customer loans (166) (31) — (324) Interest income Central bank balances (111) — — (60) Interest income Customer deposits 8 4 — 34 Interest expense Gain (loss) Hedge 1 Amounts reclassified from reserves Hedged cash Hedged item Income The Bank - At 31 December 2019 £m £m £m £m Fair value hedges Interest rate Fixed rate mortgages (15) Fixed rate issuance (38) Fixed rate bonds 4 Fixed rate borrowings 6 Cash flow hedges Foreign exchange Foreign currency issuance (67) — (25) (11) Interest expense Interest rate Customer loans 125 27 — (363) Interest income Central bank balances 361 35 — (84) Interest income Customer deposits 25 — — 35 Interest expense 1 Hedge ineffectiveness is included in the income statement within net trading income.

FINANCIAL ASSETS AT AMORTISED_2

FINANCIAL ASSETS AT AMORTISED COST (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Financial Assets At Amortised Cost Explanatory [Abstract]
Schedule of Debt Securities and Loans and Advances to Banks and Customers	Year ended 31 December 2020 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2020 4,852 — — — 4,852 — — — — — Exchange and other adjustments (25) — — — (25) — — — — — Additions (repayments) 1,127 — — — 1,127 — — — — — Charge to the income statement 4 — — — 4 At 31 December 2020 5,954 — — — 5,954 4 — — — 4 Allowance for impairment losses (4) — — — (4) Net carrying amount 5,950 — — — 5,950 Loans and advances to customers At 1 January 2020 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 Exchange and other adjustments 1 1,013 24 (198) (8) 831 — 2 43 21 66 Transfers to Stage 1 4,970 (4,954) (16) — 144 (141) (3) — Transfers to Stage 2 (28,516) 29,128 (612) — (217) 267 (50) — Transfers to Stage 3 (1,615) (2,001) 3,616 — (9) (156) 165 — Impact of transfers between stages (25,161) 22,173 2,988 — (84) 880 570 1,366 (166) 850 682 1,366 Other changes in credit quality 838 (33) 1,183 167 2,155 Additions (repayments) 9,989 578 (754) (1,156) 8,657 37 143 (38) (30) 112 Methodology and model changes (31) 170 26 — 165 Charge to the income statement 678 1,130 1,853 137 3,798 Advances written off (1,490) (39) (1,529) (1,490) (39) (1,529) Recoveries of advances written off in previous years 250 — 250 250 — 250 Discount unwind (47) — (47) At 31 December 2020 415,608 51,280 6,443 12,511 485,842 1,347 2,125 1,968 261 5,701 Allowance for impairment losses (1,347) (2,125) (1,968) (261) (5,701) Net carrying amount 414,261 49,155 4,475 12,250 480,141 Debt securities At 1 January 2020 5,325 — 1 — 5,326 — — 1 — 1 Exchange and other adjustments (17) — — — (17) — — — — — Additions (repayments) (171) — — — (171) — — — — — At 31 December 2020 5,137 — 1 — 5,138 — — 1 — 1 Allowance for impairment losses — — (1) — (1) Net carrying amount 5,137 — — — 5,137 Due from fellow Lloyds Banking Group undertakings 738 — — — 738 Allowance for impairment losses — — — — — Net carrying amount 738 — — — 738 Total financial assets at amortised cost 426,086 49,155 4,475 12,250 491,966 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments, in respect of purchased or originated credit-impaired financial assets. Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m Undrawn balances At 1 January 2020 91 77 5 — 173 Exchange and other adjustments — — — — — Transfers to Stage 1 19 (19) — — Transfers to Stage 2 (10) 10 — — Transfers to Stage 3 (1) (6) 7 — Impact of transfers between stages (10) 90 10 90 (2) 75 17 90 Other items charged to the income statement 102 69 (8) — 163 Charge to the income statement 100 144 9 — 253 At 31 December 2020 191 221 14 — 426 The Group's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m In respect of: Loans and advances to banks 4 — — — 4 Loans and advances to customers 1,347 2,125 1,968 261 5,701 Debt securities — — 1 — 1 Due from fellow Lloyds Banking Group undertakings — — — — — Financial assets at amortised cost 1,351 2,125 1,969 261 5,706 Provisions in relation to loan commitments and financial guarantees 191 221 14 — 426 Total 1,542 2,346 1,983 261 6,132 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — — Year ended 31 December 2019 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2019 3,691 2 — — 3,693 1 — — — 1 Exchange and other adjustments (125) — — — (125) (1) — — — (1) Additions (repayments) 1,286 (2) — — 1,284 — — — — — At 31 December 2019 4,852 — — — 4,852 — — — — — Allowance for impairment losses — — — — — Net carrying amount 4,852 — — — 4,852 Loans and advances to customers At 1 January 2019 420,968 25,308 5,397 15,391 467,064 518 992 1,432 78 3,020 Exchange and other adjustments 1 (312) (44) 26 283 (47) 10 (9) 28 283 312 Acquisition of portfolios 3,694 — — — 3,694 Transfers to Stage 1 6,318 (6,286) (32) — 229 (222) (7) — Transfers to Stage 2 (13,052) 13,484 (432) — (53) 92 (39) — Transfers to Stage 3 (1,539) (1,437) 2,976 — (15) (140) 155 — Impact of transfers between stages (8,273) 5,761 2,512 — (175) 353 420 598 (14) 83 529 598 Other changes in credit quality 31 2 905 (106) 832 Additions (repayments) 13,690 (2,520) (857) (1,934) 8,379 91 (48) (60) (87) (104) Methodology and model changes 33 (27) 8 — 14 Charge to the income statement 141 10 1,382 (193) 1,340 Advances written off (1,827) (54) (1,881) (1,827) (54) (1,881) Recoveries of advances written 396 28 424 396 28 424 Discount unwind (52) — (52) At 31 December 2019 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 Allowance for impairment losses (669) (993) (1,359) (142) (3,163) Net carrying amount 429,098 27,512 4,288 13,572 474,470 Debt securities At 1 January 2019 5,095 — 2 — 5,097 — — 2 — 2 Exchange and other adjustments (90) — (1) — (91) — — (1) — (1) Additions (repayments) 320 — — — 320 — — — — — At 31 December 2019 5,325 — 1 — 5,326 — — 1 — 1 Allowance for impairment losses — — (1) — (1) Net carrying amount 5,325 — — — 5,325 Due from fellow Lloyds Banking Group undertakings 1,854 — 43 — 1,897 Allowance for impairment losses — — (43) — (43) Net carrying amount 1,854 — — — 1,854 Total financial assets at amortised cost 441,129 27,512 4,288 13,572 486,501 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments, in respect of purchased or originated credit-impaired financial assets. Movements in UK retail mortgage balances were as follows: Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m UK retail mortgages At 1 January 2019 257,797 13,654 1,393 15,391 288,235 37 226 118 78 459 Exchange and other adjustments 1 (1) — 2 283 284 — — — 283 283 Acquisition of portfolios 3,694 — — — 3,694 Transfers to Stage 1 3,060 (3,057) (3) — 17 (17) — — Transfers to Stage 2 (7,879) 8,242 (363) — (13) 33 (20) — Transfers to Stage 3 (427) (472) 899 — (5) (21) 26 — Impact of transfers between stages (5,246) 4,713 533 — (15) 104 39 128 (16) 99 45 128 Other changes in credit quality 6 10 (33) (106) (123) Additions (repayments) 799 (1,432) (416) (1,934) (2,983) (4) (20) (16) (87) (127) Methodology and model changes — (34) (10) — (44) Charge to the income statement (14) 55 (14) (193) (166) Advances written off (35) (54) (89) (35) (54) (89) Recoveries of advances written 29 28 57 29 28 57 Discount unwind 24 — 24 At 31 December 2019 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Allowance for impairment losses (23) (281) (122) (142) (568) Net carrying amount 257,020 16,654 1,384 13,572 288,630 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments in respect of purchased or originated credit-impaired financial assets. Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m Undrawn balances At 1 January 2019 121 63 6 — 190 Exchange and other adjustments (1) 1 — — — Transfers to Stage 1 19 (19) — — Transfers to Stage 2 (4) 4 — — Transfers to Stage 3 (1) (3) 4 — Impact of transfers between stages (17) 24 (1) 6 (3) 6 3 6 Other items charged to the income statement (26) 7 (4) — (23) Charge to the income statement (29) 13 (1) — (17) At 31 December 2019 91 77 5 — 173 The Group's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total The Group £m £m £m £m £m In respect of: Loans and advances to banks — — — — — Loans and advances to customers 669 993 1,359 142 3,163 Debt securities — — 1 — 1 Due from fellow Lloyds Banking Group undertakings — — 43 — 43 Financial assets at amortised cost 669 993 1,403 142 3,207 Provisions in relation to loan commitments and financial guarantees 91 77 5 — 173 Total 760 1,070 1,408 142 3,380 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — — Year ended 31 December 2020 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2020 4,453 — — 4,453 — — — — Exchange and other adjustments (19) — — (19) — — — — Additions (repayments) 1,226 — — 1,226 — — — — Charge to the income statement 4 — — 4 At 31 December 2020 5,660 — — 5,660 4 — — 4 Allowance for impairment losses (4) — — (4) Net carrying amount 5,656 — — 5,656 Loans and advances to customers At 1 January 2020 165,676 10,681 2,385 178,742 238 435 500 1,173 Exchange and other adjustments 40 (1) (220) (181) — — 23 23 Transfers to Stage 1 1,974 (1,967) (7) — 73 (72) (1) — Transfers to Stage 2 (11,777) 12,089 (312) — (49) 66 (17) — Transfers to Stage 3 (955) (900) 1,855 — (10) (59) 69 — Impact of transfers between stages (10,758) 9,222 1,536 — (49) 340 311 602 (35) 275 362 602 Other changes in credit quality 382 (43) 479 818 Additions (repayments) 1,231 1,592 (212) 2,611 35 137 (19) 153 Methodology and model changes (31) 170 26 165 Charge to the income statement 351 539 848 1,738 Advances written off (708) (708) (708) (708) Recoveries of advances written off in previous 86 86 86 86 Discount unwind (31) (31) At 31 December 2020 156,189 21,494 2,867 180,550 589 974 718 2,281 Allowance for impairment losses (589) (974) (718) (2,281) Net carrying amount 155,600 20,520 2,149 178,269 Debt securities At 1 January 2020 5,241 — — 5,241 — — — — Exchange and other adjustments (16) — — (16) — — — — Additions (repayments) (909) — — (909) 1 — — 1 At 31 December 2020 4,316 — — 4,316 1 — — 1 Allowance for impairment losses (1) — — (1) Net carrying amount 4,315 — — 4,315 Due from fellow Lloyds Banking Group undertakings 128,791 — 7 128,798 Allowance for impairment losses (20) — (7) (27) Net carrying amount 128,771 — — 128,771 Total financial assets at amortised cost 294,342 20,520 2,149 317,011 Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m Undrawn balances At 1 January 2020 44 42 4 90 Exchange and other adjustments — — — — Transfers to Stage 1 9 (9) — — Transfers to Stage 2 (5) 5 — — Transfers to Stage 3 — (3) 3 — Impact of transfers between stages (5) 58 — 53 (1) 51 3 53 Other items charged to the income statement 59 42 1 102 Charge to the income statement 58 93 4 155 At 31 December 2020 102 135 8 245 The Bank's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m In respect of: Loans and advances to banks 4 — — 4 Loans and advances to customers 589 974 718 2,281 Debt securities 1 — — 1 Due from fellow Lloyds Banking Group undertakings 20 — 7 27 Financial assets at amortised cost 614 974 725 2,313 Provisions in relation to loan commitments and financial guarantees 102 135 8 245 Total 716 1,109 733 2,558 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — — Year ended 31 December 2019 Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m £m £m £m £m Loans and advances to banks At 1 January 2019 3,154 — — 3,154 1 — — 1 Exchange and other adjustments (105) — — (105) (1) (1) Additions (repayments) 1,404 — — 1,404 — — — — At 31 December 2019 4,453 — — 4,453 — — — — Allowance for impairment losses — — — — Net carrying amount 4,453 — — 4,453 Loans and advances to customers At 1 January 2019 160,379 11,006 2,464 173,849 209 502 823 1,534 Exchange and other adjustments (325) (14) — (339) 1 — (33) (32) Transfers to Stage 1 2,805 (2,782) (23) — 113 (109) (4) — Transfers to Stage 2 (4,236) 4,455 (219) — (17) 33 (16) — Transfers to Stage 3 (649) (560) 1,209 — (7) (68) 75 — Impact of transfers between stages (2,080) 1,113 967 — (96) 127 227 258 (7) (17) 282 258 Other changes in credit quality (11) 18 226 233 Additions (repayments) 7,702 (1,424) (287) 5,991 13 (41) (15) (43) Methodology and model changes 33 (27) 8 14 Charge to the income statement 28 (67) 501 462 Advances written off (911) (911) (911) (911) Recoveries of advances written off in previous 152 152 152 152 Discount unwind (32) (32) At 31 December 2019 165,676 10,681 2,385 178,742 238 435 500 1,173 Allowance for impairment losses (238) (435) (500) (1,173) Net carrying amount 165,438 10,246 1,885 177,569 Debt securities At 1 January 2019 4,960 — — 4,960 — — — — Exchange and other adjustments (91) — — (91) — — — — Additions (repayments) 372 — — 372 — — — — At 31 December 2019 5,241 — — 5,241 — — — — Allowance for impairment losses — — — — Net carrying amount 5,241 — — 5,241 Due from fellow Lloyds Banking Group 202,295 — 55 202,350 Allowance for impairment losses (18) — (55) (73) Net carrying amount 202,277 — — 202,277 Total financial assets at amortised cost 377,409 10,246 1,885 389,540 Movements in allowance for expected credit losses in respect of undrawn balances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m Undrawn balances At 1 January 2019 41 32 3 76 Exchange and other adjustments — — — — Transfers to Stage 1 8 (8) — — Transfers to Stage 2 (2) 2 — — Transfers to Stage 3 — (2) 2 — Impact of transfers between stages (7) 15 (1) 7 (1) 7 1 7 Other items charged to the income statement 4 3 — 7 Charge to the income statement 3 10 1 14 At 31 December 2019 44 42 4 90 The Bank's total impairment allowances were as follows: Allowance for expected credit losses Stage 1 Stage 2 Stage 3 Total The Bank £m £m £m £m In respect of: Loans and advances to banks — — — — Loans and advances to customers 238 435 500 1,173 Debt securities — — — — Due from fellow Lloyds Banking Group undertakings 18 — 55 73 Financial assets at amortised cost 256 435 555 1,246 Provisions in relation to loan commitments and financial guarantees 44 42 4 90 Total 300 477 559 1,336 Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item) — — — —
Schedule of Retail Mortgages	Movements in UK retail mortgage balances were as follows: Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m UK retail mortgages At 1 January 2020 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Exchange and other adjustments 1 — — — (8) (8) — — — 21 21 Transfers to Stage 1 2,418 (2,414) (4) — 17 (17) — — Transfers to Stage 2 (16,463) 16,882 (419) — (4) 22 (18) — Transfers to Stage 3 (199) (974) 1,173 — — (35) 35 — Impact of transfers between stages (14,244) 13,494 750 — (15) 198 66 249 (2) 168 83 249 Other changes in credit quality 63 (26) (23) 167 181 Additions (repayments) 8,619 (1,411) (375) (1,156) 5,677 14 (15) (13) (30) (44) Methodology and model changes 6 60 24 — 90 Charge to the income statement 81 187 71 137 476 Advances written off (37) (39) (76) (37) (39) (76) Recoveries of advances written 15 — 15 15 — 15 Discount unwind 20 — 20 At 31 December 2020 251,418 29,018 1,859 12,511 294,806 104 468 191 261 1,024 Allowance for impairment losses (104) (468) (191) (261) (1,024) Net carrying amount 251,314 28,550 1,668 12,250 293,782 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments in respect of purchased or originated credit-impaired financial assets. Gross carrying amount Allowance for expected credit losses Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m UK retail mortgages At 1 January 2019 257,797 13,654 1,393 15,391 288,235 37 226 118 78 459 Exchange and other adjustments 1 (1) — 2 283 284 — — — 283 283 Acquisition of portfolios 3,694 — — — 3,694 Transfers to Stage 1 3,060 (3,057) (3) — 17 (17) — — Transfers to Stage 2 (7,879) 8,242 (363) — (13) 33 (20) — Transfers to Stage 3 (427) (472) 899 — (5) (21) 26 — Impact of transfers between stages (5,246) 4,713 533 — (15) 104 39 128 (16) 99 45 128 Other changes in credit quality 6 10 (33) (106) (123) Additions (repayments) 799 (1,432) (416) (1,934) (2,983) (4) (20) (16) (87) (127) Methodology and model changes — (34) (10) — (44) Charge to the income statement (14) 55 (14) (193) (166) Advances written off (35) (54) (89) (35) (54) (89) Recoveries of advances written 29 28 57 29 28 57 Discount unwind 24 — 24 At 31 December 2019 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Allowance for impairment losses (23) (281) (122) (142) (568) Net carrying amount 257,020 16,654 1,384 13,572 288,630 1 Exchange and other adjustments includes the impact of movements in exchange rates, derecognising assets as a result of modifications and adjustments in respect of purchased or originated credit-impaired financial assets.

FINANCE LEASE RECEIVABLES (Tabl

FINANCE LEASE RECEIVABLES (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of maturity analysis of finance lease payments receivable [text block] [Abstract]
Schedule of Finance Lease Receivables Maturity	The Group’s finance lease receivables are classified as loans and advances to customers and accounted for at amortised cost. The balance is analysed as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Gross investment in finance leases, receivable: Not later than 1 year 308 484 18 70 Later than 1 year and not later than 2 years 180 340 2 6 Later than 2 years and not later than 3 years 143 174 2 6 Later than 3 years and not later than 4 years 191 138 7 6 Later than 4 years and not later than 5 years 110 201 2 5 Later than 5 years 571 695 — — 1,503 2,032 31 93 Unearned future finance income on finance leases (440) (478) — — Rentals received in advance (16) (18) (1) — Net investment in finance leases 1,047 1,536 30 93 The net investment in finance leases represents amounts recoverable as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Not later than 1 year 237 404 17 70 Later than 1 year and not later than 2 years 135 322 2 6 Later than 2 years and not later than 3 years 104 126 2 6 Later than 3 years and not later than 4 years 159 98 7 6 Later than 4 years and not later than 5 years 86 166 2 5 Later than 5 years 326 420 — — Net investment in finance leases 1,047 1,536 30 93

FINANCIAL ASSETS AT FAIR VALU_4

FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
Financial assets at fair value through profit or loss, classified as held for trading, category
FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Tables) [Line Items]
Schedule of Financial Assets At Fair Value Through Other Comprehensive Income	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Debt securities: Government securities 14,267 13,082 14,114 12,938 Asset-backed securities 65 60 — — Corporate and other debt securities 12,928 11,036 10,533 8,783 27,260 24,178 24,647 21,721 Treasury and other bills — 439 — 439 Total financial assets at fair value through other comprehensive income 27,260 24,617 24,647 22,160

GOODWILL OF THE GROUP (Tables)

GOODWILL OF THE GROUP (Tables)	12 Months Ended
	Dec. 31, 2020
The Group
GOODWILL OF THE GROUP (Tables) [Line Items]
Schedule of Goodwill	2020 2019 £m £m At 1 January 474 474 Impairment charged to the income statement (4) — At 31 December 470 474 Cost 1 814 814 Accumulated impairment losses (344) (340) At 31 December 470 474 1 For acquisitions made prior to 1 January 2004, the date of transition to IFRS, cost is included net of amounts amortised up to 31 December 2003.

OTHER INTANGIBLE ASSETS (Tables

OTHER INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about intangible assets [abstract]
Schedule of Other Intangible Assets	The Group The Bank Brands Core deposit Purchased Customer- Capitalised Total Capitalised £m £m £m £m £m £m £m Cost: At 1 January 2019 584 2,770 1,002 50 3,907 8,313 3,306 Additions — — — — 1,029 1,029 978 Disposals — — — — (10) (10) (4) At 31 December 2019 584 2,770 1,002 50 4,926 9,332 4,280 Additions — — — — 984 984 857 Disposals — — — — (55) (55) (6) At 31 December 2020 584 2,770 1,002 50 5,855 10,261 5,131 Accumulated amortisation: At 1 January 2019 204 2,770 411 50 1,556 4,991 1,244 Charge for the year (note 9) — — 70 — 492 562 420 Disposals — — — — (2) (2) (2) At 31 December 2019 204 2,770 481 50 2,046 5,551 1,662 Charge for the year (note 9) — — 70 — 583 653 515 Disposals — — — — (55) (55) (6) At 31 December 2020 204 2,770 551 50 2,574 6,149 2,171 Balance sheet amount at 380 — 451 — 3,281 4,112 2,960 Balance sheet amount at 380 — 521 — 2,880 3,781 2,618

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [abstract]
Schedule of Property, Plant and Equipment	The Group The Bank Investment Premises Equipment Operating Right-of-use asset 1 Total Premises Equipment Right-of-use asset 1 Total £m £m £m £m £m £m £m £m £m £m Cost or valuation: At 1 January 2019 35 1,180 4,966 6,642 1,655 14,478 1,275 6,267 883 8,425 Exchange and other adjustments — 3 4 — — 7 21 — — 21 Additions — 118 518 1,693 183 2,512 62 484 114 660 Expenditure on investment properties (see below) 11 — — — — 11 — — — — Change in fair value of investment properties (note 7) (8) — — — — (8) — — — — Disposals (23) (243) (231) (1,681) (25) (2,203) (271) (210) (16) (497) At 31 December 2019 15 1,058 5,257 6,654 1,813 14,797 1,087 6,541 981 8,609 Exchange and other adjustments — 1 — — — 1 7 — — 7 Additions — 72 314 1,436 122 1,944 42 287 104 433 Expenditure on investment properties (see below) 9 — — — — 9 — — — — Change in fair value of investment properties (note 7) (20) — — — — (20) — — — — Disposals — (184) (501) (1,914) (124) (2,723) (113) (472) (103) (688) At 31 December 2020 4 947 5,070 6,176 1,811 14,008 1,023 6,356 982 8,361 Accumulated depreciation and impairment: At 1 January 2019 — 199 2,270 1,839 — 4,308 687 3,915 — 4,602 Exchange and other adjustments — — (1) (33) 1 (33) 8 — 3 11 Depreciation charge for the year (note 9) — 121 710 1,006 203 2,040 67 648 110 825 Disposals — (225) (176) (584) — (985) (257) (166) — (423) At 31 December 2019 — 95 2,803 2,228 204 5,330 505 4,397 113 5,015 Exchange and other adjustments — (1) 2 — — 1 — 2 — 2 Depreciation charge for the year (note 9) — 124 676 1,002 215 2,017 70 619 121 810 Disposals — (137) (466) (1,012) (42) (1,657) (93) (441) (30) (564) At 31 December 2020 — 81 3,015 2,218 377 5,691 482 4,577 204 5,263 Balance sheet amount at 4 866 2,055 3,958 1,434 8,317 541 1,779 778 3,098 Balance sheet amount at 15 963 2,454 4,426 1,609 9,467 582 2,144 868 3,594 1 Primarily premises.
Schedule of Expenditure on Investment Properties	Expenditure on investment properties is comprised as follows: 2020 2019 £m £m Acquisitions of new properties 9 11 Additional expenditure on existing properties — — 9 11
Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases	At 31 December the future minimum rentals receivable by the Group under non-cancellable operating leases were as follows: 2020 2019 £m £m Receivable within 1 year 864 977 1 to 2 years 548 620 2 to 3 years 274 312 3 to 4 years 78 102 4 to 5 years 7 12 Over 5 years — 2 Total future minimum rentals receivable 1,771 2,025

INVESTMENT IN SUBSIDIARY UNDE_2

INVESTMENT IN SUBSIDIARY UNDERTAKINGS OF THE BANK (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of interests in subsidiaries [Abstract]
Schedule of Investment in Subsidiary Undertakings of the Bank	2020 2019 £m £m At 1 January 34,084 32,656 Additions and capital injections 1,055 1,766 Capital contributions 33 53 Capital repayments (1,801) (212) Disposals (18) (20) Impairment 1 — (159) At 31 December 33,353 34,084 1 During the year ended 31 December 2019 the Bank wrote-down the carrying value of its investments in certain subsidiaries, following a review of their financial position and anticipated future activities.

OTHER ASSETS (Tables)

OTHER ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of other non-current assets [Abstract]
Schedule of Other Assets	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Settlement balances 202 490 100 437 Prepayments 1,030 1,229 443 469 Other assets 660 808 211 92 Total other assets 1,892 2,527 754 998

FINANCIAL LIABILITIES AT FAIR_2

FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Tables)	12 Months Ended
	Dec. 31, 2020
Financial liabilities at fair value through profit or loss, category
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Tables) [Line Items]
Schedule of Trading and Other Financial Liabilities and Fair Value Through Profit or Loss	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Liabilities designated at fair value through profit or loss: debt securities in issue 6,828 7,531 7,905 7,484 Trading liabilities: Other deposits 2 98 2 140 Short positions in securities 1 73 — 73 3 171 2 213 Total financial liabilities at fair value through profit or loss 6,831 7,702 7,907 7,697

DEBT SECURITIES IN ISSUE (Table

DEBT SECURITIES IN ISSUE (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of debt instruments [Abstract]
Schedule of Debt Securities in Issue	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Medium-term notes issued 21,501 26,628 19,546 25,603 Covered bonds (note 26) 23,977 29,818 20,895 25,359 Certificates of deposit issued 3,597 4,925 3,597 4,925 Securitisation notes (note 26) 4,436 7,329 — — Commercial paper 5,782 7,731 4,071 5,622 Total debt securities in issue 59,293 76,431 48,109 61,509

SECURITISATIONS AND COVERED B_2

SECURITISATIONS AND COVERED BONDS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Securitisations Programmes And Transactions [Abstract]
Schedule of Securitisation and Covered Bond Programmes	The Group’s principal securitisation and covered bond programmes, together with the balances of the advances subject to these arrangements and the carrying value of the notes in issue at 31 December, are listed below. The notes in issue are reported in note 25. 2020 2019 Loans and Notes in Loans and Notes in £m £m £m £m Securitisation programmes UK residential mortgages 23,984 21,640 25,815 23,505 Commercial loans 2,884 4,004 5,116 6,038 Credit card receivables 5,890 4,340 8,164 5,767 Motor vehicle finance 1,826 1,915 3,450 3,462 34,584 31,899 42,545 38,772 Less held by the Group (27,418) (31,396) Total securitisation programmes (notes 24 and 25) 1 4,481 7,376 Covered bond programmes Residential mortgage-backed 33,980 23,477 37,579 29,318 Social housing loan-backed 980 600 1,552 600 34,960 24,077 39,131 29,918 Less held by the Group (100) (100) Total covered bond programmes (note 25) 23,977 29,818 Total securitisation and covered bond programmes 28,458 37,194 1 Includes £45 million (2019: £47 million) of securitisation notes held at fair value through profit or loss.

OTHER LIABILITIES (Tables)

OTHER LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of other liabilities [text block] [Abstract]
Schedule of Other Liabilities	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Settlement balances 36 274 11 9 Lease liabilities 1,592 1,755 885 975 Other creditors and accruals 3,553 3,571 1,677 1,808 5,181 5,600 2,573 2,792
Schedule of Maturity of Lease Liabilities	The maturity of the lease liabilities was as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Not later than 1 year 227 238 125 132 Later than 1 year and not later than 2 years 192 220 102 124 Later than 2 years and not later than 3 years 157 192 80 106 Later than 3 years and not later than 4 years 146 156 74 84 Later than 4 years and not later than 5 years 117 156 57 84 Later than 5 years 753 793 447 445 1,592 1,755 885 975

RETIREMENT BENEFIT OBLIGATIONS

RETIREMENT BENEFIT OBLIGATIONS (Tables)	12 Months Ended
	Dec. 31, 2020
Movements in the defined benefit obligation
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Movements in the defined benefit obligation At 1 January (45,241) (41,092) (28,072) (25,198) Current service cost (206) (201) (97) (98) Interest expense (914) (1,172) (568) (737) Remeasurements: Actuarial gains (losses) – experience 493 (29) 441 35 Actuarial (losses) gains – demographic assumptions (218) 471 (282) 304 Actuarial losses – financial assumptions (5,718) (5,400) (3,524) (3,812) Benefits paid 2,254 2,174 1,504 1,436 Past service cost (5) (44) (2) (33) Settlements 20 17 — — Exchange and other adjustments (14) 35 3 31 At 31 December (49,549) (45,241) (30,597) (28,072)
Defined benefit obligation, category
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Analysis of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Analysis of the defined benefit obligation: Active members (6,550) (6,413) (3,415) (3,433) Deferred members (17,647) (16,058) (10,493) (9,679) Pensioners (23,409) (21,032) (15,311) (13,714) Dependants (1,943) (1,738) (1,378) (1,246) At 31 December (49,549) (45,241) (30,597) (28,072)
Changes in the fair value of scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Changes in the fair value of scheme assets At 1 January 45,791 42,238 28,419 25,865 Return on plan assets excluding amounts included in interest income 5,565 3,531 3,217 2,700 Interest income 937 1,220 581 765 Employer contributions 1,149 1,062 647 558 Benefits paid (2,254) (2,174) (1,504) (1,436) Settlements (22) (18) — — Administrative costs paid (54) (43) (33) (26) Exchange and other adjustments 15 (25) (3) (7) At 31 December 51,127 45,791 31,324 28,419
Composition of scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	2020 2019 Quoted Unquoted Total Quoted Unquoted Total The Group £m £m £m £m £m £m Equity instruments 616 45 661 555 39 594 Debt instruments 1 : Fixed interest government bonds 11,328 — 11,328 8,893 — 8,893 Index-linked government bonds 21,058 — 21,058 18,207 — 18,207 Corporate and other debt securities 12,736 — 12,736 10,588 — 10,588 45,122 — 45,122 37,688 — 37,688 Property — 136 136 — 158 158 Pooled investment vehicles 650 13,022 13,672 4,773 10,585 15,358 Money market instruments, cash, derivatives, and other assets and liabilities 812 (9,276) (8,464) 204 (8,211) (8,007) At 31 December 47,200 3,927 51,127 43,220 2,571 45,791 1 Of the total debt instruments, £39,439 million (2019: £33,134 million) were investment grade (credit ratings equal to or better than ‘BBB’). 2020 2019 Quoted Unquoted Total Quoted Unquoted Total The Bank £m £m £m £m £m £m Equity instruments 423 34 457 385 26 411 Debt instruments 1 : Fixed interest government bonds 4,591 — 4,591 3,198 — 3,198 Index-linked government bonds 12,638 — 12,638 11,254 — 11,254 Corporate and other debt securities 7,878 — 7,878 6,791 — 6,791 25,107 — 25,107 21,243 — 21,243 Pooled investment vehicles 124 8,569 8,693 2,527 7,203 9,730 Money market instruments, derivatives, cash and other assets and liabilities 365 (3,298) (2,933) (145) (2,820) (2,965) At 31 December 26,019 5,305 31,324 24,010 4,409 28,419 1 Of the total debt instruments, £21,938 million (2019: £18,724 million) were investment grade (credit ratings equal to or better than ‘BBB’).
Composition of pension scheme pooled investment vehicles
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The pension schemes’ pooled investment vehicles comprise: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Equity funds 3,169 2,429 2,044 1,706 Hedge and mutual funds 2,181 2,886 1,427 1,818 Alternative credit funds 4,072 4,716 2,620 3,061 Property funds 1,551 1,536 1,100 1,127 Infrastructure funds 1,405 1,648 620 827 Liquidity funds 847 1,126 598 980 Bond and debt funds 396 971 284 211 Other 51 46 — — At 31 December 13,672 15,358 8,693 9,730
Actuarial and financial assumptions
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The principal actuarial and financial assumptions used in valuations of the defined benefit pension schemes were as follows: 2020 2019 % % Discount rate 1.44 2.05 Rate of inflation: Retail Price Index (RPI) 2.80 2.94 Consumer Price Index (CPI) 2.41 1.99 Rate of salary increases 0.00 0.00 Weighted-average rate of increase for pensions in payment 2.61 2.57
Defined benefit plan member life expectancy
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	2020 2019 Years Years Life expectancy for member aged 60, on the valuation date: Men 27.0 27.5 Women 29.0 29.2 Life expectancy for member aged 60, 15 years after the valuation date: Men 28.1 28.5 Women 30.2 30.3
Change in assumptions for pension plans
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank Effect of reasonably possible alternative assumptions Effect of reasonably possible alternative assumptions Increase (decrease) in the (Increase) decrease in the Increase (decrease) in the (Increase) decrease in the 2020 2019 2020 2019 2020 2019 2020 2019 £m £m £m £m £m £m £m £m Inflation (including pension increases) 1 : Increase of 0.1 per cent 11 12 531 467 6 7 337 302 Decrease of 0.1 per cent (11) (12) (522) (460) (6) (7) (332) (296) Discount rate 2 : Increase of 0.1 per cent (20) (20) (866) (763) (12) (11) (534) (471) Decrease of 0.1 per cent 19 21 890 784 11 12 548 484 Expected life expectancy of members: Increase of one year 39 40 2,146 1,636 23 24 1,370 1,038 Decrease of one year (37) (39) (2,052) (1,575) (23) (23) (1,310) (1,000) 1 At 31 December 2020, the assumed rate of RPI inflation is 2.80 per cent and CPI inflation 2.41 per cent (2019: RPI 2.94 per cent and CPI 1.99 per cent). 2 At 31 December 2020, the assumed discount rate is 1.44 per cent (2019: 2.05 per cent).
Weighted average duration of defined benefit obligations
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The following table provides information on the weighted average duration of the defined benefit pension obligation and the distribution and timing of benefit payments: The Group The Bank 2020 2019 2020 2019 Years Years Years Years Duration of the defined benefit obligation 19 18 17 16
Defined benefit obligation, maturity analysis
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Maturity analysis of benefits expected to be paid: Within 12 months 1,293 1,274 914 892 Between 1 and 2 years 1,350 1,373 940 963 Between 2 and 5 years 4,347 4,455 2,989 3,086 Between 5 and 10 years 8,301 8,426 5,547 5,673 Between 10 and 15 years 9,093 9,229 5,796 5,962 Between 15 and 25 years 17,485 17,400 10,590 10,603 Between 25 and 35 years 13,479 13,999 7,709 8,044 Between 35 and 45 years 7,162 8,291 3,645 4,266 In more than 45 years 2,287 3,160 874 1,208
Movements in other post-retirement benefit obligations
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	Movements in the other post-retirement benefits obligation: The Group The Bank 2020 2019 2020 2019 £m £m £m £m At 1 January (126) (124) (85) (84) Actuarial gains (losses) 16 (6) 15 (3) Insurance premiums paid 4 7 3 5 Charge for the year (3) (4) (2) (2) Exchange and other adjustments — 1 1 (1) At 31 December (109) (126) (68) (85)
Consolidated balance sheet
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Amount included in the balance sheet Present value of funded obligations (49,549) (45,241) (30,597) (28,072) Fair value of scheme assets 51,127 45,791 31,324 28,419 Net amount recognised in the balance sheet 1,578 550 727 347
Consolidated balance sheet | Total defined benefit schemes
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The total amounts recognised in the balance sheet relate to: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Defined benefit pension schemes 1,578 550 727 347 Other post-retirement benefit schemes (109) (126) (68) (85) Total amounts recognised in the balance sheet 1,469 424 659 262
Consolidated balance sheet | Defined benefit assets and obligations
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Amounts recognised in the balance sheet Retirement benefit assets 1,714 681 765 386 Retirement benefit obligations (245) (257) (106) (124) Total amounts recognised in the balance sheet 1,469 424 659 262
Consolidated balance sheet | Net amount recognised in the balance sheet
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Net amount recognised in the balance sheet At 1 January 550 1,146 347 667 Net defined benefit pension charge (244) (241) (119) (129) Actuarial losses on defined benefit obligation (5,443) (4,958) (3,365) (3,473) Return on plan assets 5,565 3,531 3,217 2,700 Employer contributions 1,149 1,062 647 558 Exchange and other adjustments 1 10 — 24 At 31 December 1,578 550 727 347
Consolidated income statement
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	The expense recognised in the income statement for the year ended 31 December comprises: The Group 2020 2019 2018 £m £m £m Current service cost 206 201 257 Net interest amount (23) (48) (22) Past service credits and curtailments — — 12 Settlements 2 1 1 Past service cost – plan amendments 5 44 108 Plan administration costs incurred during the year 54 43 40 Total defined benefit pension expense 244 241 396
Consolidated income statement | Total defined benefit schemes
RETIREMENT BENEFIT OBLIGATIONS (Tables) [Line Items]
Schedule of Defined Benefit Obligations	2020 2019 2018 £m £m £m Charge to the Group income statement Defined benefit pension schemes 244 241 396 Other post-retirement benefit schemes 3 4 4 Total defined benefit schemes 247 245 400 Defined contribution pension schemes 305 273 288 Total charge to the income statement – continuing operations (note 9) 552 518 688

DEFERRED TAX (Tables)

DEFERRED TAX (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of deferred taxes [text block] [Abstract]
Schedule of Statutory Position and Tax Disclosure	The Group’s and the Bank’s deferred tax assets and liabilities are as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Statutory position Deferred tax assets 3,468 3,366 2,109 2,029 Deferred tax liabilities — — — — Net deferred tax asset 3,468 3,366 2,109 2,029 Tax disclosure Deferred tax assets 5,327 4,731 3,042 2,734 Deferred tax liabilities (1,859) (1,365) (933) (705) Net deferred tax asset 3,468 3,366 2,109 2,029
Schedule of Movements in Deferred Tax Liabilities and Assets	Movements in deferred tax liabilities and assets (before taking into consideration the offsetting of balances within the same taxing jurisdiction) can be summarised as follows: The Group Tax losses Property, Pension Provisions Share-based Derivatives Asset 1 Other Total Deferred tax assets £m £m £m £m £m £m £m £m £m At 1 January 2019 3,783 682 79 196 28 — — 6 4,774 (Charge) credit to the income statement (183) (12) (100) (87) 4 19 — 126 (233) Credit to other comprehensive income — — 74 116 — — — — 190 At 31 December 2019 3,600 670 53 225 32 19 — 132 4,731 (Charge) credit to the income statement 454 8 6 4 (5) (12) 28 94 577 (Charge) credit to other comprehensive income — — (3) 22 — — — — 19 At 31 December 2020 4,054 678 56 251 27 7 28 226 5,327 Capitalised Acquisition Pension Derivatives Asset 1 Other Total Deferred tax liabilities £m £m £m £m £m £m £m At 1 January 2019 (36) (698) (273) (388) (101) (56) (1,552) (Charge) credit to the income statement 15 215 59 (34) (21) (53) 181 (Charge) credit to other comprehensive income — — 64 (140) 84 — 8 Exchange and other adjustments — — — — — (2) (2) At 31 December 2019 (21) (483) (150) (562) (38) (111) (1,365) (Charge) credit to the income statement (207) 147 (77) (106) (22) (94) (359) (Charge) credit to other comprehensive income — — (165) (31) 60 — (136) Exchange and other adjustments — — — — — 1 1 At 31 December 2020 (228) (336) (392) (699) — (204) (1,859) 1 Financial assets at fair value through other comprehensive income. The Bank Tax losses Property, Pension Provisions Share-based Other Total Deferred tax assets £m £m £m £m £m £m £m At 1 January 2019 2,284 375 30 53 20 1 2,763 (Charge) credit to the income statement (86) (32) (57) (41) (1) 12 (205) Credit to other comprehensive income — — 60 116 — — 176 At 31 December 2019 2,198 343 33 128 19 13 2,734 (Charge) credit to the income statement 309 (38) 1 10 (1) 9 290 (Charge) credit to other comprehensive income — — (4) 22 — — 18 At 31 December 2020 2,507 305 30 160 18 22 3,042 Capitalised Pension Derivatives Asset 1 Other Total Deferred tax liabilities £m £m £m £m £m £m At 1 January 2019 (31) (176) (431) (103) (38) (779) (Charge) credit to the income statement 12 59 — (19) 17 69 (Charge) credit to other comprehensive income — 20 (105) 86 (1) — Exchange and other adjustments — — — — 5 5 At 31 December 2019 (19) (97) (536) (36) (17) (705) (Charge) credit to the income statement (193) (5) 1 (9) 12 (194) (Charge) credit to other comprehensive income — (105) 30 40 — (35) Exchange and other adjustments — — — — 1 1 At 31 December 2020 (212) (207) (505) (5) (4) (933) 1 Financial assets at fair value through other comprehensive income.

OTHER PROVISIONS (Tables)

OTHER PROVISIONS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of other provisions [text block] [Abstract]
Schedule of Assumptions for Other Provisions	The Group Provisions Payment Other Other Total £m £m £m £m £m At 1 January 2020 173 1,874 395 696 3,138 Exchange and other adjustments — — 2 — 2 Provisions applied — (1,700) (465) (190) (2,355) Charge for the year 253 85 329 270 937 At 31 December 2020 426 259 261 776 1,722 The Bank Provisions Payment Other Other Total £m £m £m £m £m At 1 January 2020 90 622 161 563 1,436 Exchange and other adjustments — — 4 2 6 Provisions applied — (726) (233) (148) (1,107) Charge for the year 155 169 143 166 633 At 31 December 2020 245 65 75 583 968

SUBORDINATED LIABILITIES (Table

SUBORDINATED LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of subordinated liabilities [text block] [Abstract]
Schedule of Movement in Subordinated Liabilities	The movement in subordinated liabilities during the year was as follows: Preferred Undated Dated Total The Group £m £m £m £m At 1 January 2019 3,210 529 9,006 12,745 Issued during the year: 4.1378% Dated Subordinated Notes due 2026 — — 492 492 2.68229% Dated Subordinated Notes due 2038 — — 70 70 2.0367% Dated Subordinated Notes due 2028 — — 218 218 — — 780 780 Repurchases and redemptions during the year 1 : 13% Step-up Perpetual Capital Securities callable 2019 (49) — — (49) 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019 — — (135) (135) 9.375% Subordinated Bonds 2021 — — (328) (328) 6.375% Subordinated Instruments 2019 — — (250) (250) (49) — (713) (762) Foreign exchange movements (83) (36) (276) (395) Other movements (all non-cash) 189 23 6 218 At 31 December 2019 3,267 516 8,803 12,586 Issued during the year: 2.6787% Fixed rate bond due 2025 — — 303 303 £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 471 471 £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 293 293 — — 1,067 1,067 Repurchases and redemptions during the year 1 : 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million) (119) — — (119) 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million) (519) — — (519) 7.281% Perpetual Regulatory Tier One Securities (Series B) (£150 million) (123) — — (123) 6.85% Non-cumulative Perpetual Preferred Securities (US$1,000 million) (580) — — (580) 7.881% Guaranteed Non-voting Non-cumulative Preferred Securities (£245 million) (289) — — (289) 6.5% Dated Subordinated Notes 2020 (€1,500 million) — — (1,464) (1,464) 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million) — — (276) (276) 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million) — — (370) (370) 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million) — — (674) (674) Subordinated Floating Rate Notes 2020 (€100 million) — — (90) (90) 9.625% Subordinated Bonds 2023 (£300 million) — — (240) (240) 7.375% Dated Subordinated Notes 2020 — — (4) (4) (1,630) — (3,118) (4,748) Foreign exchange movements (59) 15 105 61 Other movements (all non-cash) 194 (26) 108 276 At 31 December 2020 1,772 505 6,965 9,242 1 The repurchases and redemptions resulted in cash outflows of £4,156 million (2019: £762 million). Certain of the above securities were issued or redeemed under exchange offers, which did not result in an extinguishment of the original financial liability for accounting purposes. Preferred Undated Dated Total The Bank £m £m £m £m At 1 January 2019 2,312 437 6,779 9,528 Issued in the year: 4.1378% Dated Subordinated Notes due 2026 — — 492 492 2.68229% Dated Subordinated Notes due 2038 — — 70 70 2.0367% Dated Subordinated Notes due 2028 — — 218 218 — — 780 780 Repurchases and redemptions during the year 1 : 13% Step-up Perpetual Capital Securities callable 2019 (49) — — (49) 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019 — — (135) (135) (49) — (135) (184) Foreign exchange movements (57) (12) (206) (275) Other movements (all non-cash) 28 — 32 60 At 31 December 2019 2,234 425 7,250 9,909 Issued in the year: 2.6787% Fixed rate bond due 2025 — — 303 303 £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 517 517 £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035 — — 394 394 — — 1,214 1,214 Repurchases and redemptions during the year 1 : 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million) (119) — — (119) 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million) (519) — — (519) 6.5% Dated Subordinated Notes 2020 (€1,500 million) — — (1,464) (1,464) 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million) — — (370) (370) 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million) — — (674) (674) Subordinated Floating Rate Notes 2020 (€100 million) — — (90) (90) 9.625% Subordinated Bonds 2023 (£300 million) — — (240) (240) 7.375% Dated Subordinated Notes 2020 — — (4) (4) (638) — (2,842) (3,480) Foreign exchange movements (43) (10) 50 (3) Other movements (all non-cash) 19 (1) 93 111 At 31 December 2020 1,572 414 5,765 7,751 1 The repurchases and redemptions resulted in cash outflows of £2,726 million (2019: £184 million).

SHARE CAPITAL (Tables)

SHARE CAPITAL (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of classes of share capital [text block] [Abstract]
Schedule of Authorised Share Capital	The Group and Bank 2020 2019 2018 £m £m £m Sterling 1,650 million ordinary shares of £1 each 1,650 1,650 1,650 1 cumulative floating rate Preference share of £1 — — — 100 6 per cent Non-Cumulative Redeemable Preference shares of £1 each — — — 175 million Preference shares of 25p each 44 44 44 1,694 1,694 1,694 US dollars US$m US$m US$m 160 million Preference shares of 25 cents each 40 40 40 Euro €m €m €m 160 million Preference shares of 25 cents each 40 40 40 Japanese yen ¥m ¥m ¥m 50 million Preference shares of ¥25 each 1,250 1,250 1,250
Schedule of Issued and Fully Paid Share Capital	2020 2019 2018 2020 2019 2018 Number of Number of Number of £m £m £m Sterling Ordinary shares of £1 each At 1 January 1,574,285,751 1,574,285,751 1,574,285,751 1,574 1,574 1,574 Issued in the year 1 — — — — — At 31 December 1,574,285,752 1,574,285,751 1,574,285,751 1,574 1,574 1,574

SHARE PREMIUM ACCOUNT (Tables)

SHARE PREMIUM ACCOUNT (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure For Share Premium Account Explanatory [Abstract]
SHARE PREMIUM ACCOUNT	The Group and Bank 2020 2019 2018 £m £m £m At 1 January and 31 December 600 600 600

OTHER RESERVES (Tables)

OTHER RESERVES (Tables)	12 Months Ended
	Dec. 31, 2020
Other reserves
OTHER RESERVES (Tables) [Line Items]
Schedule of Other Reserves	The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Other reserves comprise: Merger reserve 6,348 6,348 6,348 — — — Revaluation reserve in respect of debt securities held at fair value through other comprehensive income (558) (538) (379) 14 103 281 Revaluation reserve in respect of equity shares held at fair value through other comprehensive income — — — — — — Cash flow hedging reserve 1,507 1,556 1,110 1,367 1,607 1,268 Foreign currency translation reserve (116) (116) (114) 1 — (6) At 31 December 7,181 7,250 6,965 1,382 1,710 1,543

RETAINED PROFITS (Tables)

RETAINED PROFITS (Tables)	12 Months Ended
	Dec. 31, 2020
The Bank
RETAINED PROFITS (Tables) [Line Items]
Income Statement	The profit after tax of the Bank was arrived at as follows: 2020 2019 2018 £m £m £m Net interest income 4,519 5,684 6,129 Net fee and commission income 655 743 839 Dividends received 44 1,331 4,848 Net trading and other operating income 2,952 2,169 2,389 Other income 3,651 4,243 8,076 Total income 8,170 9,927 14,205 Regulatory provisions (312) (996) (939) Other operating expenses (5,516) (5,337) (5,864) Total operating expenses (5,828) (6,333) (6,803) Impairment (1,898) (503) (504) Profit before tax 444 3,091 6,898 Tax credit (expense) 197 (645) (757) Profit for the year 641 2,446 6,141 Profit attributable to ordinary shareholders 224 2,165 5,866 Profit attributable to other equity holders 417 281 275 Profit for the year 641 2,446 6,141
Retained profits
RETAINED PROFITS (Tables) [Line Items]
Schedule of Retained Profits	The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m At 1 January 24,549 27,321 36,749 42,470 45,051 52,843 Profit attributable to ordinary shareholders (see below for the Bank) 1,023 2,515 3,907 224 2,165 5,866 Capital transactions with parent Dividends paid (note 37) — (4,100) (11,022) — (4,100) (11,022) Capital repayments — — (2,975) — — (2,975) Capital contributions received 140 229 265 140 229 265 Return of capital contributions (4) (5) (9) (4) (5) (9) 136 (3,876) (13,741) 136 (3,876) (13,741) Realised gains and losses on equity shares held at fair value through other comprehensive income (16) 12 (111) 4 12 (144) Post-retirement defined benefit scheme remeasurements 113 (1,117) 120 (102) (576) (162) Share of other comprehensive income of associates and joint ventures — — 8 — — — Gains and losses attributable to own credit risk (net of tax) 1 (55) (306) 389 (55) (306) 389 At 31 December 25,750 24,549 27,321 42,677 42,470 45,051 1 During 2020 the Group derecognised, on redemption, financial liabilities on which cumulative fair value movements relating to own credit of £1 million net of tax (2019: £nil; 2018: £nil), had been recognised directly in retained profits.

OTHER EQUITY INSTRUMENTS (Table

OTHER EQUITY INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Other Equity Instruments Explanatory [Abstract]
Schedule of Other Equity Instruments	The Group and Bank 2020 2019 2018 £m £m £m At 1 January 4,865 3,217 3,217 Issued in the year: US$500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities 383 — — €750 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities 687 — — £500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities — 496 — US$1,500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities — 1,152 — 1,070 1,648 — Profit for the year attributable to other equity holders 417 281 275 Distributions on other equity instruments (417) (281) (275) At 31 December 5,935 4,865 3,217

DIVIDENDS ON ORDINARY SHARES (T

DIVIDENDS ON ORDINARY SHARES (Tables)	12 Months Ended
	Dec. 31, 2020
Dividend award
DIVIDENDS ON ORDINARY SHARES (Tables) [Line Items]
Schedule of Dividends On Ordinary Shares	2020 2019 2018 £m £m £m Dividends paid during the year were as follows: Interim dividends — 4,100 11,022

SHARE-BASED PAYMENTS (Tables)

SHARE-BASED PAYMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
SHARE-BASED PAYMENTS (Tables) [Line Items]
Schedule of - Share Options Outstanding, Shares under the Executive Share Ownership Plan, Shares under CFO Buyout	Movements in the number of share options outstanding under the SAYE schemes are set out below: 2020 2019 Number Weighted Number Weighted Outstanding at 1 January 1,068,094,073 44.55 802,994,918 49.30 Granted 779,229,797 24.25 487,654,212 39.87 Exercised (255,706,663) 47.51 (27,303,963) 51.23 Forfeited (6,938,102) 43.30 (15,830,204) 48.69 Cancelled (389,767,675) 42.24 (130,068,149) 49.03 Expired (74,772,515) 47.26 (49,352,741) 58.74 Outstanding at 31 December 1,120,138,915 30.39 1,068,094,073 44.55 Exercisable at 31 December 792,741 47.49 227,139 60.70 2020 2019 Number Weighted Number Weighted Outstanding at 1 January 7,634,638 Nil 10,263,028 Nil Granted 1,990,449 Nil 2,336,171 Nil Exercised (2,122,302) Nil (4,455,481) Nil Vested (47,337) Nil (69,005) Nil Forfeited (111,100) Nil (39,250) Nil Lapsed (677,976) Nil (400,825) Nil Outstanding at 31 December 6,666,372 Nil 7,634,638 Nil Exercisable at 31 December 3,150,407 Nil 2,683,267 Nil
Schedule of Assumptions Used for Calculating Benefit Plans	The fair value calculations at 31 December 2020 for grants made in the year, using Black-Scholes models and Monte Carlo simulation, are based on the following assumptions: SAYE Executive Executive Group Ownership Share Plan Weighted average risk-free interest rate (0.03%) (0.01%) 0.18% Weighted average expected life 3.2 years 1.2 years 3.6 years Weighted average expected volatility 32% 42% 23% Weighted average expected dividend yield 5.3% 5.3% 5.3% Weighted average share price £0.28 £0.35 £0.47 Weighted average exercise price £0.24 Nil Nil
Lloyds Banking Group executive share ownership plan
SHARE-BASED PAYMENTS (Tables) [Line Items]
Schedule of - Share Options Outstanding, Shares under the Executive Share Ownership Plan, Shares under CFO Buyout	2020 2019 Number Number Outstanding at 1 January 459,904,745 417,385,636 Granted 211,214,605 174,490,843 Vested (47,775,806) (88,318,950) Forfeited (96,015,542) (55,029,439) Dividend award 6,659,525 11,376,655 Outstanding at 31 December 533,987,527 459,904,745
CFO Buyout
SHARE-BASED PAYMENTS (Tables) [Line Items]
Schedule of - Share Options Outstanding, Shares under the Executive Share Ownership Plan, Shares under CFO Buyout	2020 2019 Number Number Outstanding at 1 January 3,268,460 — Granted — 4,086,632 Exercised (1,457,748) (818,172) Outstanding at 31 December 1,810,712 3,268,460

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2020
Compensation
RELATED PARTY TRANSACTIONS (Tables) [Line Items]
Schedule of Transactions with Key Management Personnel	The table below details, on an aggregated basis, key management personnel compensation: 2020 2019 2018 £m £m £m Compensation Salaries and other short-term benefits 12 14 13 Post-employment benefits — — — Share-based payments 12 14 17 Total compensation 24 28 30
Defined benefit plans
RELATED PARTY TRANSACTIONS (Tables) [Line Items]
Schedule of Transactions with Key Management Personnel	2020 2019 2018 million million million Share options over Lloyds Banking Group plc shares At 1 January — — 1 Granted, including certain adjustments (includes entitlements of appointed key management personnel) — — — Exercised/lapsed (includes entitlements of former key management personnel) — — (1) At 31 December — — — 2020 2019 2018 million million million Share plans settled in Lloyds Banking Group plc shares At 1 January 101 84 82 Granted, including certain adjustments (includes entitlements of appointed key management personnel) 46 46 39 Exercised/lapsed (includes entitlements of former key management personnel) (30) (29) (37) At 31 December 117 101 84
Deposits
RELATED PARTY TRANSACTIONS (Tables) [Line Items]
Schedule of Transactions with Key Management Personnel	2020 2019 2018 £m £m £m Deposits At 1 January 23 20 20 Placed (includes deposits of appointed key management personnel) 26 44 33 Withdrawn (includes deposits of former key management personnel) (38) (41) (33) At 31 December 11 23 20
Balances and transactions with Lloyds Banking Group plc and fellow subsidiaries of the Bank
RELATED PARTY TRANSACTIONS (Tables) [Line Items]
Schedule of Balances and Transactions with Lloyds Banking Group Plc and Fellow Subsidiaries of the Bank	The Bank and its subsidiaries have balances due to and from the Bank’s parent company, Lloyds Banking Group plc and fellow subsidiaries of the Bank. These are included on the balance sheet as follows: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Assets, included within: Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings 738 1,854 530 1,581 Derivative financial instruments 690 591 690 591 1,428 2,445 1,220 2,172 Liabilities, included within: Due to fellow Lloyds Banking Group undertakings 6,875 4,893 6,666 4,696 Financial liabilities at fair value through profit or loss — 1 1,121 1 Derivative financial instruments 1,424 1,986 972 1,547 Debt securities in issue 12,686 11,181 11,551 11,136 Subordinated liabilities 4,599 3,663 4,745 3,641 25,584 21,724 25,055 21,021
The Group | Loans
RELATED PARTY TRANSACTIONS (Tables) [Line Items]
Schedule of Transactions with Key Management Personnel	The tables below detail, on an aggregated basis, balances outstanding at the year end and related income and expense, together with information relating to other transactions between the Group and its key management personnel: 2020 2019 2018 £m £m £m Loans At 1 January 2 2 2 Advanced (includes loans of appointed key management personnel) — 1 1 Repayments (includes loans of former key management personnel) — (1) (1) At 31 December 2 2 2
The Bank | Balances and transactions between members of the Lloyds Bank Group
RELATED PARTY TRANSACTIONS (Tables) [Line Items]
Schedule of Balances and Transactions Between Members of the Lloyds Bank Group	The Bank, as a result of its position as parent of a banking group, has a large number of transactions with various of its subsidiary undertakings; these are included on the balance sheet of the Bank as follows: 2020 2019 £m £m Assets, included within: Derivative financial instruments 7,077 8,546 Financial assets at fair value through profit or loss 1,203 — Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings 128,241 200,696 136,521 209,242 Liabilities, included within: Due to fellow Lloyds Banking Group undertakings 33,170 105,075 Financial liabilities at fair value through profit or loss — 43 Derivative financial instruments 4,738 7,102 Debt securities in issue 20 — 37,928 112,220

CONTINGENT LIABILITIES, COMMI_2

CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of commitments and contingent liabilities [text block] [Abstract]
Schedule of Contingent Liabilities	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Contingent liabilities Acceptances and endorsements 73 17 73 16 Other: Other items serving as direct credit substitutes 221 279 203 259 Performance bonds, including letters of credit, and other transaction-related contingencies 2,070 2,274 1,817 2,014 2,291 2,553 2,020 2,273 Total contingent liabilities 2,364 2,570 2,093 2,289 The Bank 2020 2019 £m £m Incurred on behalf of fellow Lloyds Banking Group undertakings 1 1
Schedule of Commitments	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Commitments and guarantees Documentary credits and other short-term trade-related transactions 1 — — — Forward asset purchases and forward deposits placed 124 171 96 157 Undrawn formal standby facilities, credit lines and other commitments to lend: Less than 1 year original maturity: Mortgage offers made 20,128 12,647 1,720 1,120 Other commitments and guarantees 82,151 78,306 32,832 29,608 102,279 90,953 34,552 30,728 1 year or over original maturity 31,194 25,310 28,118 21,664 Total commitments and guarantees 133,598 116,434 62,766 52,549 The Bank 2020 2019 £m £m Incurred on behalf of fellow Lloyds Banking Group undertakings 3,659 4,647

FINANCIAL INSTRUMENTS (Tables)

FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Financial Assets and Liabilites	The following tables analyse the carrying amounts of the financial assets and liabilities by category and by balance sheet heading. Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Group £m £m £m £m £m £m £m At 31 December 2020 Financial assets Cash and balances at central banks — — — — — 49,888 49,888 Items in the course of collection from banks — — — — — 300 300 Financial assets at fair value through profit or loss — — 1,674 — — — 1,674 Derivative financial instruments 674 7,667 — — — — 8,341 Loans and advances to banks — — — — — 5,950 5,950 Loans and advances to customers — — — — — 480,141 480,141 Debt securities — — — — — 5,137 5,137 Due from fellow Lloyds Banking Group undertakings — — — — — 738 738 Financial assets at amortised cost — — — — — 491,966 491,966 Financial assets at fair value through other comprehensive income — — — — 27,260 — 27,260 Total financial assets 674 7,667 1,674 — 27,260 542,154 579,429 Financial liabilities Deposits from banks — — — — — 24,997 24,997 Customer deposits — — — — — 434,569 434,569 Due to fellow Lloyds Banking Group undertakings — — — — — 6,875 6,875 Items in course of transmission to banks — — — — — 302 302 Financial liabilities at fair value through profit or loss — 3 — 6,828 — — 6,831 Derivative financial instruments 590 7,638 — — — — 8,228 Notes in circulation — — — — — 1,305 1,305 Debt securities in issue — — — — — 59,293 59,293 Other — — — — — 1,592 1,592 Subordinated liabilities — — — — — 9,242 9,242 Total financial liabilities 590 7,641 — 6,828 — 538,175 553,234 Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Group £m £m £m £m £m £m £m At 31 December 2019 Financial assets Cash and balances at central banks — — — — — 38,880 38,880 Items in the course of collection from banks — — — — — 292 292 Financial assets at fair value through profit or loss — 290 1,994 — — — 2,284 Derivative financial instruments 1,117 7,377 — — — — 8,494 Loans and advances to banks — — — — — 4,852 4,852 Loans and advances to customers — — — — — 474,470 474,470 Debt securities — — — — — 5,325 5,325 Due from fellow Lloyds Banking Group undertakings — — — — — 1,854 1,854 Financial assets at amortised cost — — — — — 486,501 486,501 Financial assets at fair value through other comprehensive income — — — — 24,617 — 24,617 Total financial assets 1,117 7,667 1,994 — 24,617 525,673 561,068 Financial liabilities Deposits from banks — — — — — 23,593 23,593 Customer deposits — — — — — 396,839 396,839 Due to fellow Lloyds Banking Group undertakings — — — — — 4,893 4,893 Items in course of transmission to banks — — — — — 354 354 Financial liabilities at fair value through profit or loss — 171 — 7,531 — — 7,702 Derivative financial instruments 1,029 8,802 — — — — 9,831 Notes in circulation — — — — — 1,079 1,079 Debt securities in issue — — — — — 76,431 76,431 Other — — — — — 1,755 1,755 Subordinated liabilities — — — — — 12,586 12,586 Total financial liabilities 1,029 8,973 — 7,531 — 517,530 535,063 Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Bank £m £m £m £m £m £m £m At 31 December 2020 Financial assets Cash and balances at central banks — — — — — 45,753 45,753 Items in the course of collection from banks — — — — — 257 257 Financial assets at fair value through profit or loss — — 1,724 — — — 1,724 Derivative financial instruments 242 12,353 — — — — 12,595 Loans and advances to banks — — — — — 5,656 5,656 Loans and advances to customers — — — — — 178,269 178,269 Debt securities — — — — — 4,315 4,315 Due from fellow Lloyds Banking Group undertakings — — — — — 128,771 128,771 Financial assets at amortised cost — — — — — 317,011 317,011 Financial assets at fair value through other comprehensive income — — — — 24,647 — 24,647 Total financial assets 242 12,353 1,724 — 24,647 363,021 401,987 Financial liabilities Deposits from banks — — — — — 10,304 10,304 Customer deposits — — — — — 264,473 264,473 Due to fellow Lloyds Banking Group undertakings — — — — — 39,836 39,836 Items in course of transmission to banks — — — — — 199 199 Financial liabilities at fair value through profit or loss — 2 — 7,905 — — 7,907 Derivative financial instruments 289 10,783 — — — — 11,072 Debt securities in issue — — — — — 48,109 48,109 Other — — — — — 885 885 Subordinated liabilities — — — — — 7,751 7,751 Total financial liabilities 289 10,785 — 7,905 — 371,557 390,536 Derivatives Mandatorily held at Designated At fair value Held at Total Held for Other The Bank £m £m £m £m £m £m £m At 31 December 2019 Financial assets Cash and balances at central banks — — — — — 35,741 35,741 Items in the course of collection from banks — — — — — 252 252 Financial assets at fair value through profit or loss — 290 413 — — — 703 Derivative financial instruments 207 13,431 — — — — 13,638 Loans and advances to banks — — — — — 4,453 4,453 Loans and advances to customers — — — — — 177,569 177,569 Debt securities — — — — — 5,241 5,241 Due from fellow Lloyds Banking Group undertakings — — — — — 202,277 202,277 Financial assets at amortised cost — — — — — 389,540 389,540 Financial assets at fair value through other comprehensive income — — — — 22,160 — 22,160 Total financial assets 207 13,721 413 — 22,160 425,533 462,034 Financial liabilities Deposits from banks — — — — — 7,122 7,122 Customer deposits — — — — — 239,762 239,762 Due to fellow Lloyds Banking Group undertakings — — — — — 109,771 109,771 Items in course of transmission to banks — — — — — 198 198 Financial liabilities at fair value through profit or loss — 213 — 7,484 — — 7,697 Derivative financial instruments 267 13,944 — — — — 14,211 Debt securities in issue — — — — — 61,509 61,509 Other — — — — — 975 975 Subordinated liabilities — — — — — 9,909 9,909 Total financial liabilities 267 14,157 — 7,484 — 429,246 451,154
Schedule of Financial Liabilities Excluding Derivatives	Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2020 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 6,783 45 6,828 Trading liabilities: Other deposits — 2 — 2 Short positions in securities 1 — — 1 1 2 — 3 Total financial liabilities carried at fair value, excluding derivatives 1 6,785 45 6,831 Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2019 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 7,484 47 7,531 Trading liabilities: Other deposits — 98 — 98 Short positions in securities 73 — — 73 73 98 — 171 Total financial liabilities carried at fair value, excluding derivatives 73 7,582 47 7,702 Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2020 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 7,905 — 7,905 Trading liabilities: Other deposits — 2 — 2 Short positions in securities — — — — — 2 — 2 Total financial liabilities carried at fair value, excluding derivatives — 7,907 — 7,907 Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2019 Financial liabilities at fair value through profit or loss Liabilities designated at fair value through profit or loss — 7,484 — 7,484 Trading liabilities: Other deposits — 140 — 140 Short positions in securities 73 — — 73 73 140 — 213 Total financial liabilities carried at fair value, excluding derivatives 73 7,624 — 7,697
Schedule of Valuation Adjustment Movements	The following table summarises the movement on this valuation adjustment account for the Group during 2019 and 2020: 2020 2019 £m £m At 1 January 214 272 Income statement charge (credit) 28 (56) Transfers — (2) At 31 December 242 214
Schedule of Valuation Adjustments	Represented by: 2020 2019 £m £m Credit Valuation Adjustment 178 141 Debit Valuation Adjustment (6) (5) Funding Valuation Adjustment 70 78 242 214
Schedule of Valuation Hierarchy for Financial Assets	Valuation hierarchy Carrying value Fair value Level 1 Level 2 Level 3 The Group £m £m £m £m £m At 31 December 2020 Financial assets at amortised cost: Loans and advances to customers 480,141 479,518 — 54,447 425,071 Loans and advances to banks 5,950 5,949 — 1,626 4,323 Debt securities 5,137 5,129 — 5,129 — Due from fellow Lloyds Banking Group undertakings 738 738 — — 738 Reverse repos included in above amounts: Loans and advances to customers 54,447 54,447 — 54,447 — Loans and advances to banks 1,626 1,626 — 1,626 — At 31 December 2019 Financial assets at amortised cost: Loans and advances to customers 474,470 475,128 — 51,624 423,504 Loans and advances to banks 4,852 4,849 — 408 4,441 Debt securities 5,325 5,317 — 5,317 — Due from fellow Lloyds Banking Group undertakings 1,854 1,854 — — 1,854 Reverse repos included in above amounts: Loans and advances to customers 51,624 51,624 — 51,624 — Loans and advances to banks 408 408 — 408 — Carrying value Fair value Valuation hierarchy Level 1 Level 2 Level 3 The Bank £m £m £m £m £m At 31 December 2020 Financial assets at amortised cost: Loans and advances to customers 178,269 176,523 — 54,447 122,076 Loans and advances to banks 5,656 5,655 — 1,626 4,029 Debt securities 4,315 4,315 — 4,315 — Due from fellow Lloyds Banking Group undertakings 128,771 128,771 — — 128,771 Reverse repos included in above amounts: Loans and advances to customers 54,447 54,447 — 54,447 — Loans and advances to banks 1,626 1,626 — 1,626 — At 31 December 2019 Financial assets at amortised cost: Loans and advances to customers 177,569 175,200 — 51,624 123,576 Loans and advances to banks 4,453 4,450 — 408 4,042 Debt securities 5,241 5,242 — 5,242 — Due from fellow Lloyds Banking Group undertakings 202,277 202,277 — — 202,277 Reverse repos included in above amounts: Loans and advances to customers 51,624 51,624 — 51,624 — Loans and advances to banks 408 408 — 408 —
Schedule of Valuation Hierarchy for Financial Liabilities	The table below analyses the fair values of the financial liabilities of the Group which are carried at amortised cost by valuation methodology (level 1, 2 or 3, as described on page F-98). Valuation hierarchy Carrying value Fair value Level 1 Level 2 Level 3 The Group £m £m £m £m £m At 31 December 2020 Deposits from banks 24,997 24,998 — 24,998 — Customer deposits 434,569 434,740 — 427,663 7,077 Due to fellow Lloyds Banking Group undertakings 6,875 6,875 — 6,875 — Debt securities in issue 59,293 62,931 — 62,931 — Subordinated liabilities 9,242 10,275 — 10,275 — Repos included in above amounts: Deposits from banks 18,767 18,767 — 18,767 — Customer deposits 9,417 9,417 — 9,417 — At 31 December 2019 Deposits from banks 23,593 23,497 — 23,497 — Customer deposits 396,839 397,222 — 391,987 5,235 Due to fellow Lloyds Banking Group undertakings 4,893 4,893 — 4,893 — Debt securities in issue 76,431 78,632 — 78,632 — Subordinated liabilities 12,586 14,542 — 14,542 — Repos included in above amounts: Deposits from banks 18,105 18,105 — 18,105 — Customer deposits 9,530 9,530 — 9,530 — Valuation hierarchy Carrying value Fair value Level 1 Level 2 Level 3 The Bank £m £m £m £m £m At 31 December 2020 Deposits from banks 10,304 10,304 — 10,304 — Customer deposits 264,473 264,497 — 264,497 — Due to fellow Lloyds Banking Group undertakings 39,836 39,836 — 39,836 — Debt securities in issue 48,109 50,824 — 50,824 — Subordinated liabilities 7,751 8,387 — 8,387 — Repos included in above amounts: Deposits from banks 5,087 5,087 — 5,087 — Customer deposits 9,417 9,417 — 9,417 — At 31 December 2019 Deposits from banks 7,122 7,025 — 7,025 — Customer deposits 239,762 239,952 — 239,952 — Due to fellow Lloyds Banking Group undertakings 109,771 109,771 — 109,771 — Debt securities in issue 61,509 63,483 — 63,483 — Subordinated liabilities 9,909 10,974 — 10,974 — Repos included in above amounts: Deposits from banks 2,645 2,645 — 2,645 — Customer deposits 9,530 9,530 — 9,530 —
Liabilities
FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Movements in Level 3 - Portfolio, Financial Liabilities Excluding Derivatives	The table below analyses movements in the level 3 financial liabilities portfolio, excluding derivatives. 2020 2019 The Group £m £m At 1 January 47 — Gains recognised in the income statement within other income — 1 Redemptions (2) (5) Transfers into the level 3 portfolio — 51 Transfers out of the level 3 portfolio — — At 31 December 45 47 Gains recognised in the income statement, within other income, relating to the change in fair value of those liabilities held at 31 December — —
Level 3
FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Movements in Level 3 - Portfolio, Financial Liabilities Excluding Derivatives	The table below analyses movements in level 3 financial assets, excluding derivatives, carried at fair value (recurring measurement). 2020 2019 Financial Financial Total level 3 Financial Financial Total level 3 The Group £m £m £m £m £m £m At 1 January 1,829 60 1,889 2,721 53 2,774 Exchange and other adjustments 85 3 88 (74) (3) (77) Gains recognised in the income statement within other income 20 — 20 4 — 4 Gains recognised in other comprehensive income within the revaluation reserve in respect of financial assets at fair value through other comprehensive income — 4 4 — 11 11 Purchases/increases to customer loans 303 — 303 686 — 686 Sales/repayments of customer loans (677) (2) (679) (1,956) (1) (1,957) Transfers into the level 3 portfolio — — — 448 — 448 Transfers out of the level 3 portfolio (49) — (49) — — — At 31 December 1,511 65 1,576 1,829 60 1,889 Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December 103 — 103 (76) — (76) 2020 2019 Financial Financial Total level 3 Financial Financial Total level 3 The Bank £m £m £m £m £m £m At 1 January 409 — 409 890 — 890 Exchange and other adjustments 101 — 101 (28) — (28) Gains recognised in the income statement within other income 5 — 5 — — — Purchases/increases to customer loans 258 — 258 101 — 101 Sales/repayments of customer loans (207) — (207) (603) — (603) Transfers into the level 3 portfolio — — — 49 — 49 Transfers out of the level 3 portfolio (49) — (49) — — — At 31 December 517 — 517 409 — 409 Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December 106 — 106 (28) — (28)
Schedule of Level 3 Derivative Assets and Liabilities	The table below analyses movements in level 3 derivative assets and liabilities carried at fair value. 2020 2019 Derivative Derivative Derivative Derivative The Group £m £m £m £m At 1 January — (297) 5 (8) Exchange and other adjustments — — — — Losses (gains) recognised in the income statement within other income 1 — — — (Sales) redemptions — 19 — 47 Transfers into the level 3 portfolio 13 (41) — (344) Transfers out of the level 3 portfolio — — (5) 8 At 31 December 14 (319) — (297) Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets or liabilities held at 31 December 1 — — — 2020 2019 Derivative Derivative Derivative Derivative The Bank £m £m £m £m At 1 January — — 5 (8) Exchange and other adjustments — — — — Losses (gains) recognised in the income statement within other income 1 (8) — — (Sales) redemptions — — — — Transfers into the level 3 portfolio 13 (52) — — Transfers out of the level 3 portfolio — — (5) 8 At 31 December 14 (60) — — Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets or liabilities held at 31 December 1 (8) — —
Schedule of Sensitivity of Level 3 Valuations	At 31 December 2020 At 31 December 2019 Effect of reasonably possible alternative assumptions 2 Effect of reasonably possible alternative assumptions 2 Valuation Significant 1 Carrying Favourable Unfavourable Carrying Favourable Unfavourable £m £m £m £m £m £m Financial assets at fair value through profit or loss: Loans and advances to customers Discounted cash flows Interest rate spreads (bps) (-50bps/+106bps) 3 1,511 47 (45) 1,782 36 (39) Debt securities Discounted cash flows Credit spreads 4 — — — 47 — — 1,511 1,829 Financial assets at fair value through other comprehensive income Asset-backed securities Lead manager or broker quote/consensus pricing n/a 65 4 (4) 60 4 (4) 65 60 Derivative financial assets Interest rate derivatives Option pricing model Interest rate volatility (13%/128%) 14 — — — — — 14 — Level 3 financial assets carried at fair value 1,590 1,889 Financial liabilities at fair value through profit or loss Discounted cash flows Interest rate spreads (+/-50bps) 5 45 1 (1) 47 1 (1) Derivative financial liabilities Interest rate derivatives Option pricing model Interest rate volatility (33%/60%) 48 — — — — — Shared appreciation right Market values – property valuation HPI (+/-1%) 6 271 24 (22) 297 17 (17) 319 297 Level 3 financial liabilities carried at fair value 364 344 1 Ranges are shown where appropriate and represent the highest and lowest inputs used in the level 3 valuations. 2 Where the exposure to an unobservable input is managed on a net basis, only the net impact is shown in the table. 3 2019: 50bps/102bps 4 2019:+/- 3% 5 2019:+/- 50bps 6 2019:+/- 5%
Total level 3 assets carried at fair value, excluding derivatives (recurring basis)
FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Financial Assets Excluding Derivatives	Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2020 Financial assets at fair value through profit or loss Loans and advances to customers — — 1,511 1,511 Equity shares 159 4 — 163 Total financial assets at fair value through profit or loss 159 4 1,511 1,674 Financial assets at fair value through other comprehensive income Debt securities: Government securities 14,267 — — 14,267 Asset-backed securities — — 65 65 Corporate and other debt securities 491 12,437 — 12,928 14,758 12,437 65 27,260 Total financial assets at fair value through other comprehensive income 14,758 12,437 65 27,260 Total financial assets carried at fair value, excluding derivatives 14,917 12,441 1,576 28,934 Level 1 Level 2 Level 3 Total The Group £m £m £m £m At 31 December 2019 Financial assets at fair value through profit or loss Loans and advances to customers — — 1,782 1,782 Debt securities: Government securities 290 — — 290 Corporate and other debt securities — — 47 47 290 — 47 337 Equity shares 161 4 — 165 Total financial assets at fair value through profit or loss 451 4 1,829 2,284 Financial assets at fair value through other comprehensive income Debt securities: Government securities 12,844 238 — 13,082 Asset-backed securities — — 60 60 Corporate and other debt securities — 11,036 — 11,036 12,844 11,274 60 24,178 Treasury and other bills 439 — — 439 Total financial assets at fair value through other comprehensive income 13,283 11,274 60 24,617 Total financial assets carried at fair value, excluding derivatives 13,734 11,278 1,889 26,901 Valuation hierarchy Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2020 Financial assets at fair value through profit or loss Loans and advances to customers — — 517 517 Debt securities: Government securities — — — — Corporate and other debt securities — 1,203 — 1,203 — 1,203 — 1,203 Equity shares — 4 — 4 Total financial assets at fair value through profit or loss — 1,207 517 1,724 Financial assets at fair value through other comprehensive income Debt securities: Government securities 14,114 — — 14,114 Corporate and other debt securities 491 10,042 — 10,533 14,605 10,042 — 24,647 Total financial assets at fair value through other comprehensive income 14,605 10,042 — 24,647 Total financial assets carried at fair value, excluding derivatives 14,605 11,249 517 26,371 Level 1 Level 2 Level 3 Total The Bank £m £m £m £m At 31 December 2019 Financial assets at fair value through profit or loss Loans and advances to customers — — 362 362 Debt securities: Government securities 290 — — 290 Corporate and other debt securities — — 47 47 290 — 47 337 Equity shares — 4 — 4 Total financial assets at fair value through profit or loss 290 4 409 703 Financial assets at fair value through other comprehensive income Debt securities: Government securities 12,700 238 — 12,938 Corporate and other debt securities — 8,783 — 8,783 12,700 9,021 — 21,721 Treasury and other bills 439 — — 439 Total financial assets at fair value through other comprehensive income 13,139 9,021 — 22,160 Total financial assets carried at fair value, excluding derivatives 13,429 9,025 409 22,863
Recurring fair value measurement
FINANCIAL INSTRUMENTS (Tables) [Line Items]
Schedule of Derivatives	2020 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total The Group £m £m £m £m £m £m £m £m Derivative assets — 8,327 14 8,341 — 8,494 — 8,494 Derivative liabilities — (7,909) (319) (8,228) — (9,534) (297) (9,831) 2020 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total The Bank £m £m £m £m £m £m £m £m Derivative assets — 12,581 14 12,595 — 13,638 — 13,638 Derivative liabilities — (11,012) (60) (11,072) — (14,211) — (14,211)

TRANSFERS OF FINANCIAL ASSETS (

TRANSFERS OF FINANCIAL ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of transferred financial assets that are not derecognised in their entirety [text block] [Abstract]
Schedule of Transferred Assets and Liabilities	The Group The Bank Carrying Carrying Carrying Carrying £m £m £m £m At 31 December 2020 Repurchase and securities lending transactions Financial assets at fair value through profit or loss — — 3,244 1,869 Financial assets at fair value through other comprehensive income 7,475 5,105 4,889 3,895 Securitisation programmes Financial assets at amortised cost: Loans and advances to customers 1,2 34,584 4,481 4,072 — The Group The Bank Carrying Carrying Carrying Carrying £m £m £m £m At 31 December 2019 Repurchase and securities lending transactions Financial assets at fair value through profit or loss 3,123 2,668 655 21 Financial assets at fair value through other comprehensive income 5,436 4,560 7,552 6,065 Securitisation programmes Financial assets at amortised cost: Loans and advances to customers 1,2 42,545 7,376 6,433 — 1 The carrying value of associated liabilities for the Group excludes securitisation notes held by the Group of £27,418 million (31 December 2019: £31,396 million). 2 The carrying value of transferred assets for the Bank includes amounts relating to assets transferred to structured entities which are fully consolidated into the Group. The liabilities associated with such assets are issued by the structured entities.

OFFSETTING OF FINANCIAL ASSET_2

OFFSETTING OF FINANCIAL ASSETS AND LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2020
Offset
OFFSETTING OF FINANCIAL ASSETS AND LIABILITIES (Tables) [Line Items]
Schedule of Offsetting of Financial Assets and Liabilities	Related amounts where set off in 3 Potential Gross amounts 1 Amount offset 2 Net amounts Cash Non-cash At 31 December 2020 £m £m £m £m £m £m Financial assets Financial assets at fair value through profit or loss: Excluding reverse repos 1,674 — 1,674 — — 1,674 Reverse repos — — — — — — 1,674 — 1,674 — — 1,674 Derivative financial instruments 67,428 (59,087) 8,341 (2,702) (3,555) 2,084 Loans and advances to banks: Excluding reverse repos 4,324 — 4,324 (1,023) — 3,301 Reverse repos 1,634 (8) 1,626 — (1,626) — 5,958 (8) 5,950 (1,023) (1,626) 3,301 Loans and advances to customers: Excluding reverse repos 426,104 (410) 425,694 (837) (2,762) 422,095 Reverse repos 59,856 (5,409) 54,447 — (54,447) — 485,960 (5,819) 480,141 (837) (57,209) 422,095 Debt securities 5,137 — 5,137 — — 5,137 Financial assets at fair value through other comprehensive income 27,260 — 27,260 — (5,132) 22,128 Financial liabilities Deposits from banks: Excluding repos 6,230 — 6,230 (2,351) — 3,879 Repos 18,775 (8) 18,767 — (18,767) — 25,005 (8) 24,997 (2,351) (18,767) 3,879 Customer deposits: Excluding repos 426,874 (1,722) 425,152 (350) (2,762) 422,040 Repos 14,826 (5,409) 9,417 — (9,417) — 441,700 (7,131) 434,569 (350) (12,179) 422,040 Financial liabilities at fair value through profit or loss: Excluding repos 6,831 — 6,831 — — 6,831 Repos — — — — — — 6,831 — 6,831 — — 6,831 Derivative financial instruments 66,003 (57,775) 8,228 (1,860) (4,849) 1,519 Related amounts where set off in 3 Potential Gross amounts 1 Amount offset 2 Net amounts Cash Non-cash At 31 December 2019 £m £m £m £m £m £m Financial assets Financial assets at fair value through profit or loss: Excluding reverse repos 2,284 — 2,284 — (21) 2,263 Reverse repos — — — — — — 2,284 — 2,284 — (21) 2,263 Derivative financial instruments 61,860 (53,366) 8,494 (2,186) (4,177) 2,131 Loans and advances to banks: Excluding reverse repos 4,444 — 4,444 (1,288) (2,792) 364 Reverse repos 408 — 408 — (408) — 4,852 — 4,852 (1,288) (3,200) 364 Loans and advances to customers: Excluding reverse repos 422,846 — 422,846 (879) — 421,967 Reverse repos 56,089 (4,465) 51,624 — (51,624) — 478,935 (4,465) 474,470 (879) (51,624) 421,967 Debt securities 5,325 — 5,325 — (211) 5,114 Financial assets at fair value through other comprehensive income 24,617 — 24,617 — (5,948) 18,669 Financial liabilities Deposits from banks: Excluding repos 5,488 — 5,488 (1,684) — 3,804 Repos 18,105 — 18,105 — (18,105) — 23,593 — 23,593 (1,684) (18,105) 3,804 Customer deposits: Excluding repos 389,178 (1,869) 387,309 (501) (2,792) 384,016 Repos 9,530 — 9,530 — (9,530) — 398,708 (1,869) 396,839 (501) (12,322) 384,016 Financial liabilities at fair value through profit or loss: Excluding repos 7,702 — 7,702 — — 7,702 Repos 4,465 (4,465) — — — — 12,167 (4,465) 7,702 — — 7,702 Derivative financial instruments 61,328 (51,497) 9,831 (2,168) (5,020) 2,643 1 After impairment allowance. 2 The amounts offset in the balance sheet as shown above represent derivatives and repurchase agreements with central clearing houses which meet the criteria for offsetting under IAS 32. 3 The Group enters into derivatives and repurchase and reverse repurchase agreements with various counterparties which are governed by industry standard master netting agreements. The Group holds and provides cash and securities collateral in respective of derivative transactions covered by these agreements. The right to set off balances under these master netting agreements or to set off cash and securities collateral only arises in the event of non-payment or default and, as a result, these arrangements do not qualify for offsetting under IAS 32.

FINANCIAL RISK MANAGEMENT (Tabl

FINANCIAL RISK MANAGEMENT (Tables)	12 Months Ended
	Dec. 31, 2020
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Maximum Credit Exposure	The Group 2020 2019 Maximum Offset 1 Net Maximum Offset 1 Net £m £m £m £m £m £m Loans and advances to banks, net 2 5,950 — 5,950 4,852 — 4,852 Loans and advances to customers, net 2 480,141 (2,762) 477,379 474,470 (2,792) 471,678 Debt securities, net 2 5,137 — 5,137 5,325 — 5,325 Financial assets at amortised cost 491,228 (2,762) 488,466 484,647 (2,792) 481,855 Financial assets at fair value through other comprehensive income 27,260 — 27,260 24,617 — 24,617 Financial assets at fair value through profit or loss 3 : Loans and advances 1,511 — 1,511 1,782 — 1,782 Debt securities, treasury and other bills — — — 337 — 337 1,511 — 1,511 2,119 — 2,119 Derivative assets 8,341 (3,373) 4,968 8,494 (4,177) 4,317 Off-balance sheet items: Acceptances and endorsements 73 — 73 17 — 17 Other items serving as direct credit substitutes 221 — 221 279 — 279 Performance bonds, including letters of credit, and other transaction-related contingencies 2,070 — 2,070 2,274 — 2,274 Irrevocable commitments and guarantees 59,240 — 59,240 46,629 — 46,629 61,604 — 61,604 49,199 — 49,199 589,944 (6,135) 583,809 569,076 (6,969) 562,107 The Bank 2020 2019 Maximum Offset 1 Net Maximum Offset 1 Net £m £m £m £m £m £m Loans and advances to banks, net 2 5,656 — 5,656 4,453 — 4,453 Loans and advances to customers, net 2 178,269 (2,156) 176,113 177,569 (2,123) 175,446 Debt securities, net 2 4,315 — 4,315 5,241 — 5,241 Financial assets at amortised cost 188,240 (2,156) 186,084 187,263 (2,123) 185,140 Financial assets at fair value through other comprehensive income 24,647 — 24,647 22,160 — 22,160 Financial assets at fair value through profit or loss 3 : Loans and advances 517 — 517 362 — 362 Debt securities, treasury and other bills 1,203 — 1,203 337 — 337 1,720 — 1,720 699 — 699 Derivative assets 12,595 (2,752) 9,843 13,638 (3,312) 10,326 Off-balance sheet items: Acceptances and endorsements 73 — 73 16 — 16 Other items serving as direct credit substitutes 203 — 203 259 — 259 Performance bonds, including letters of credit, and other transaction-related contingencies 1,817 — 1,817 2,014 — 2,014 Irrevocable commitments and guarantees 32,847 — 32,847 27,672 — 27,672 34,940 — 34,940 29,961 — 29,961 262,142 (4,908) 257,234 253,721 (5,435) 248,286 1 Offset items comprise deposit amounts available for offset, and amounts available for offset under master netting arrangements, that do not meet the criteria under IAS 32 to enable loans and advances and derivative assets respectively to be presented net of these balances in the financial statements. 2 Amounts shown net of related impairment allowances. 3 Excluding equity shares.
Schedule of Average Probability of Default Grade	Retail Commercial Quality classification IFRS 9 PD range Quality classification IFRS 9 PD range RMS 1-6 0.00-4.50% CMS 1-10 0.00-0.50% RMS 7-9 4.51-14.00% CMS 11-14 0.51-3.00% RMS 10 14.01-20.00% CMS 15-18 3.01-20.00% RMS 11-13 20.01-99.99% CMS 19 20.01-99.99% RMS 14 100% CMS 20-23 100%
Schedule of Credit Quality of Assets	Drawn exposures Expected credit loss allowance The Group - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to banks: CMS 1-10 5,951 — — — 5,951 4 — — — 4 CMS 11-14 3 — — — 3 — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 5,954 — — — 5,954 4 — — — 4 Loans and advances to customers: Retail - UK mortgages RMS 1-6 251,372 21,010 — — 272,382 103 247 — — 350 RMS 7-9 46 4,030 — — 4,076 1 66 — — 67 RMS 10 — 907 — — 907 — 25 — — 25 RMS 11-13 — 3,071 — — 3,071 — 130 — — 130 RMS 14 — — 1,859 12,511 14,370 — — 191 261 452 251,418 29,018 1,859 12,511 294,806 104 468 191 261 1,024 Retail - credit cards RMS 1-6 9,619 1,284 — — 10,903 75 57 — — 132 RMS 7-9 1,603 1,137 — — 2,740 66 138 — — 204 RMS 10 274 343 — — 617 14 70 — — 84 RMS 11-13 — 509 — — 509 — 193 — — 193 RMS 14 — — 340 — 340 — — 153 — 153 11,496 3,273 340 — 15,109 155 458 153 — 766 Retail - loans and overdrafts RMS 1-6 5,559 291 — — 5,850 80 15 — — 95 RMS 7-9 1,990 580 — — 2,570 99 66 — — 165 RMS 10 116 181 — — 297 13 36 — — 49 RMS 11-13 45 467 — — 512 9 178 — — 187 RMS 14 — — 307 — 307 — — 147 — 147 7,710 1,519 307 — 9,536 201 295 147 — 643 Retail - UK Motor Finance RMS 1-6 12,035 1,396 — — 13,431 187 46 — — 233 RMS 7-9 738 456 — — 1,194 7 33 — — 40 RMS 10 — 171 — — 171 — 30 — — 30 RMS 11-13 13 193 — — 206 — 62 — — 62 RMS 14 — — 199 — 199 — — 133 — 133 12,786 2,216 199 — 15,201 194 171 133 — 498 Retail - other RMS 1-6 14,952 482 — — 15,434 19 19 — — 38 RMS 7-9 2,418 334 — — 2,752 11 39 — — 50 RMS 10 — 21 — — 21 — 1 — — 1 RMS 11-13 509 467 — — 976 — 40 — — 40 RMS 14 — — 184 — 184 — — 59 — 59 17,879 1,304 184 — 19,367 30 99 59 — 188 Total Retail 301,289 37,330 2,889 12,511 354,019 684 1,491 683 261 3,119 The Group - Gross drawn exposures and expected credit loss allowances continued Drawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 22,218 177 — — 22,395 23 2 — — 25 CMS 11-14 30,023 6,662 — — 36,685 135 106 — — 241 CMS 15-18 4,656 6,430 — — 11,086 96 397 — — 493 CMS 19 — 669 — — 669 — 129 — — 129 CMS 20-23 — — 3,485 — 3,485 — — 1,273 — 1,273 56,897 13,938 3,485 — 74,320 254 634 1,273 — 2,161 Other RMS 1-6 822 12 — — 834 9 — — — 9 RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 59 — 59 — — 12 — 12 822 12 59 — 893 9 — 12 — 21 CMS 1-10 56,362 — — — 56,362 — — — — — CMS 11-14 236 — — — 236 — — — — — CMS 15-18 — — — — — — — — — — CMS 19 2 — — — 2 — — — — — CMS 20-23 — — 10 — 10 — — — — — 56,600 — 10 — 56,610 — — — — — Central overlay — — — — — 400 — — — 400 Total loans and advances to customers 415,608 51,280 6,443 12,511 485,842 1,347 2,125 1,968 261 5,701 In respect of: Retail 301,289 37,330 2,889 12,511 354,019 684 1,491 683 261 3,119 Commercial 56,897 13,938 3,485 — 74,320 254 634 1,273 — 2,161 Other 1 57,422 12 69 — 57,503 409 — 12 — 421 Total loans and advances to customers 415,608 51,280 6,443 12,511 485,842 1,347 2,125 1,968 261 5,701 1 Principally comprises reverse repurchase agreement balances. The Group - Gross undrawn exposures and expected credit loss allowances Undrawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to customers: Retail - UK mortgages RMS 1-6 19,347 109 — — 19,456 3 — — — 3 RMS 7-9 1 6 — — 7 — — — — — RMS 10 — 2 — — 2 — — — — — RMS 11-13 — 1 — — 1 — — — — — RMS 14 — — 10 74 84 — — — — — 19,348 118 10 74 19,550 3 — — — 3 Retail - credit cards RMS 1-6 54,694 3,044 — — 57,738 67 46 — — 113 RMS 7-9 772 463 — — 1,235 11 8 — — 19 RMS 10 602 282 — — 884 7 11 — — 18 RMS 11-13 — 85 — — 85 — 7 — — 7 RMS 14 — — 56 — 56 — — — — — 56,068 3,874 56 — 59,998 85 72 — — 157 Retail - loans and overdrafts RMS 1-6 6,070 315 — — 6,385 14 7 — — 21 RMS 7-9 269 139 — — 408 8 14 — — 22 RMS 10 13 35 — — 48 1 7 — — 8 RMS 11-13 3 69 — — 72 — 21 — — 21 RMS 14 — — 18 — 18 — — — — — 6,355 558 18 — 6,931 23 49 — — 72 Retail - UK Motor Finance RMS 1-6 1,275 — — — 1,275 2 — — — 2 RMS 7-9 381 3 — — 384 1 — — — 1 RMS 10 — — — — — — — — — — RMS 11-13 1 — — — 1 — — — — — RMS 14 — — — — — — — — — — 1,657 3 — — 1,660 3 — — — 3 Retail - other RMS 1-6 1,672 23 — — 1,695 7 5 — — 12 RMS 7-9 140 36 — — 176 9 13 — — 22 RMS 10 — — — — — — — — — — RMS 11-13 — 10 — — 10 — 7 — — 7 RMS 14 — — 1 — 1 — — — — — 1,812 69 1 — 1,882 16 25 — — 41 Total Retail 85,240 4,622 85 74 90,021 130 146 — — 276 The Group - Gross undrawn exposures and expected credit loss allowances continued Undrawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 29,039 — — — 29,039 13 — — — 13 CMS 11-14 9,612 1,614 — — 11,226 31 16 — — 47 CMS 15-18 934 1,291 — — 2,225 16 47 — — 63 CMS 19 — 92 — — 92 — 12 — — 12 CMS 20-23 — — 195 — 195 — — 14 — 14 39,585 2,997 195 — 42,777 60 75 14 — 149 Other RMS 1-6 299 — — — 299 1 — — — 1 RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — — — — — — — — — 299 — — — 299 1 — — — 1 CMS 1-10 501 — — — 501 — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 501 — — — 501 — — — — — Total loans and advances to customers 125,625 7,619 280 74 133,598 191 221 14 — 426 In respect of: Retail 85,240 4,622 85 74 90,021 130 146 — — 276 Commercial 39,585 2,997 195 — 42,777 60 75 14 — 149 Other 800 — — — 800 1 — — — 1 Total loans and advances to customers 125,625 7,619 280 74 133,598 191 221 14 — 426 Drawn exposures Expected credit loss allowance The Group - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to banks: CMS 1-10 4,852 — — — 4,852 — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 4,852 — — — 4,852 — — — — — Loans and advances to customers: Retail - UK mortgages RMS 1-6 257,028 13,494 — — 270,522 23 183 — — 206 RMS 7-9 15 2,052 — — 2,067 — 39 — — 39 RMS 10 — 414 — — 414 — 13 — — 13 RMS 11-13 — 975 — — 975 — 46 — — 46 RMS 14 — — 1,506 13,714 15,220 — — 122 142 264 257,043 16,935 1,506 13,714 289,198 23 281 122 142 568 Retail - credit cards RMS 1-6 14,744 729 — — 15,473 103 25 — — 128 RMS 7-9 1,355 556 — — 1,911 49 54 — — 103 RMS 10 32 105 — — 137 3 19 — — 22 RMS 11-13 1 291 — — 292 — 91 — — 91 RMS 14 — — 385 — 385 — — 125 — 125 16,132 1,681 385 — 18,198 155 189 125 — 469 Retail - loans and overdrafts RMS 1-6 7,406 368 — — 7,774 84 17 — — 101 RMS 7-9 1,321 363 — — 1,684 55 38 — — 93 RMS 10 44 85 — — 129 4 15 — — 19 RMS 11-13 17 315 — — 332 3 102 — — 105 RMS 14 — — 293 — 293 — — 108 — 108 8,788 1,131 293 — 10,212 146 172 108 — 426 Retail - UK Motor Finance RMS 1-6 13,568 1,297 — — 14,865 203 30 — — 233 RMS 7-9 314 368 — — 682 10 15 — — 25 RMS 10 — 99 — — 99 — 10 — — 10 RMS 11-13 2 178 — — 180 1 32 — — 33 RMS 14 — — 150 — 150 — — 84 — 84 13,884 1,942 150 — 15,976 214 87 84 — 385 Retail - other RMS 1-6 9,762 395 — — 10,157 25 10 — — 35 RMS 7-9 8 420 — — 428 — 26 — — 26 RMS 10 — 7 — — 7 — — — — — RMS 11-13 134 23 — — 157 — 1 — — 1 RMS 14 — — 150 — 150 — — 51 — 51 9,904 845 150 — 10,899 25 37 51 — 113 Total Retail 305,751 22,534 2,484 13,714 344,483 563 766 490 142 1,961 The Group - Gross drawn exposures and expected credit loss allowances continued Drawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 43,104 356 — — 43,460 27 2 — — 29 CMS 11-14 25,341 2,312 — — 27,653 50 37 — — 87 CMS 15-18 1,793 3,089 — — 4,882 13 171 — — 184 CMS 19 — 168 — — 168 — 16 — — 16 CMS 20-23 — — 3,135 — 3,135 — — 859 — 859 70,238 5,925 3,135 — 79,298 90 226 859 — 1,175 Other RMS 1-6 768 46 — — 814 16 1 — — 17 RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 28 — 28 — — 10 — 10 768 46 28 — 842 16 1 10 — 27 CMS 1-10 53,010 — — — 53,010 — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — 53,010 — — — 53,010 — — — — — Total loans and advances to customers 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 In respect of: Retail 305,751 22,534 2,484 13,714 344,483 563 766 490 142 1,961 Commercial 70,238 5,925 3,135 — 79,298 90 226 859 — 1,175 Other 1 53,778 46 28 — 53,852 16 1 10 — 27 Total loans and advances to customers 429,767 28,505 5,647 13,714 477,633 669 993 1,359 142 3,163 1 Principally comprises reverse repurchase agreement balances. Undrawn exposures Expected credit loss allowance The Group - Gross undrawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to customers: Retail - UK mortgages RMS 1-6 12,242 62 — — 12,304 1 — — — 1 RMS 7-9 1 1 — — 2 — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 8 79 87 — — — — — 12,243 63 8 79 12,393 1 — — — 1 Retail - credit cards RMS 1-6 54,216 1,762 — — 55,978 44 21 — — 65 RMS 7-9 293 162 — — 455 4 3 — — 7 RMS 10 3 28 — — 31 — 1 — — 1 RMS 11-13 1 44 — — 45 — 4 — — 4 RMS 14 — — 75 — 75 — — — — — 54,513 1,996 75 — 56,584 48 29 — — 77 Retail - loans and overdrafts RMS 1-6 6,437 224 — — 6,661 12 3 — — 15 RMS 7-9 96 56 — — 152 2 5 — — 7 RMS 10 2 11 — — 13 — 2 — — 2 RMS 11-13 — 29 — — 29 — 11 — — 11 RMS 14 — — 8 — 8 — — — — — 6,535 320 8 — 6,863 14 21 — — 35 Retail - UK Motor Finance RMS 1-6 1,181 — — — 1,181 2 — — — 2 RMS 7-9 193 4 — — 197 — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — — — — — — — — — 1,374 4 — — 1,378 2 — — — 2 Retail - other RMS 1-6 1,240 — — — 1,240 11 — — — 11 RMS 7-9 — 62 — — 62 — 3 — — 3 RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — 2 — 2 — — — — — 1,240 62 2 — 1,304 11 3 — — 14 Total Retail 75,905 2,445 93 79 78,522 76 53 — — 129 The Group - Gross undrawn exposures and expected credit loss allowances continued Undrawn exposures Expected credit loss allowance Stage 1 Stage 2 Stage 3 POCI Total Stage 1 Stage 2 Stage 3 POCI Total £m £m £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 31,014 76 — — 31,090 7 — — — 7 CMS 11-14 5,105 850 — — 5,955 7 9 — — 16 CMS 15-18 258 326 — — 584 1 13 — — 14 CMS 19 — 43 — — 43 — 2 — — 2 CMS 20-23 — — 5 — 5 — — 5 — 5 36,377 1,295 5 — 37,677 15 24 5 — 44 Other RMS 1-6 235 — — — 235 — — — — — RMS 7-9 — — — — — — — — — — RMS 10 — — — — — — — — — — RMS 11-13 — — — — — — — — — — RMS 14 — — — — — — — — — — 235 — — — 235 — — — — — CMS 1-10 — — — — — — — — — — CMS 11-14 — — — — — — — — — — CMS 15-18 — — — — — — — — — — CMS 19 — — — — — — — — — — CMS 20-23 — — — — — — — — — — — — — — — — — — — — Total loans and advances to customers 112,517 3,740 98 79 116,434 91 77 5 — 173 In respect of: Retail 75,905 2,445 93 79 78,522 76 53 — — 129 Commercial 36,377 1,295 5 — 37,677 15 24 5 — 44 Other 235 — — — 235 — — — — — Total loans and advances to customers 112,517 3,740 98 79 116,434 91 77 5 — 173 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to banks: CMS 1-10 5,660 — — 5,660 4 — — 4 CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 5,660 — — 5,660 4 — — 4 Loans and advances to customers: Retail - UK mortgages RMS 1-6 41,423 4,152 — 45,575 8 24 — 32 RMS 7-9 2 1,442 — 1,444 — 11 — 11 RMS 10 — 137 — 137 — 3 — 3 RMS 11-13 — 946 — 946 — 18 — 18 RMS 14 — — 568 568 — — 32 32 41,425 6,677 568 48,670 8 56 32 96 Retail - credit cards RMS 1-6 2,248 363 — 2,611 18 17 — 35 RMS 7-9 290 342 — 632 14 45 — 59 RMS 10 2 94 — 96 — 22 — 22 RMS 11-13 — 134 — 134 — 57 — 57 RMS 14 — — 88 88 — — 40 40 2,540 933 88 3,561 32 141 40 213 Retail - loans and overdrafts RMS 1-6 2,930 162 — 3,092 44 8 — 52 RMS 7-9 1,109 265 — 1,374 56 30 — 86 RMS 10 64 102 — 166 7 21 — 28 RMS 11-13 22 266 — 288 4 102 — 106 RMS 14 — — 173 173 — — 84 84 4,125 795 173 5,093 111 161 84 356 Retail - UK Motor Finance RMS 1-6 382 40 — 422 7 2 — 9 RMS 7-9 6 18 — 24 — 1 — 1 RMS 10 — 9 — 9 — 2 — 2 RMS 11-13 — 13 — 13 — 5 — 5 RMS 14 — — 44 44 — — 26 26 388 80 44 512 7 10 26 43 Retail - other RMS 1-6 5,173 188 — 5,361 9 11 — 20 RMS 7-9 2,186 214 — 2,400 10 32 — 42 RMS 10 — — — — — — — — RMS 11-13 345 395 — 740 — 35 — 35 RMS 14 — — 123 123 — — 37 37 7,704 797 123 8,624 19 78 37 134 Total Retail 56,182 9,282 996 66,460 177 446 219 842 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 17,907 175 — 18,082 20 — — 20 CMS 11-14 22,449 5,928 — 28,377 114 94 — 208 CMS 15-18 3,722 5,548 — 9,270 76 332 — 408 CMS 19 — 549 — 549 — 101 — 101 CMS 20-23 — — 1,865 1,865 — — 496 496 44,078 12,200 1,865 58,143 210 527 496 1,233 Other RMS 1-6 230 12 — 242 2 1 — 3 RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 6 6 — — 3 3 230 12 6 248 2 1 3 6 CMS 1-10 55,595 — — 55,595 — — — — CMS 11-14 104 — — 104 — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 55,699 — — 55,699 — — — — Central overlay — — — — 200 — — 200 Total loans and advances to customers 156,189 21,494 2,867 180,550 589 974 718 2,281 In respect of: Retail 56,182 9,282 996 66,460 177 446 219 842 Commercial 44,078 12,200 1,865 58,143 210 527 496 1,233 Other 1 55,929 12 6 55,947 202 1 3 206 Total loans and advances to customers 156,189 21,494 2,867 180,550 589 974 718 2,281 1 Principally comprises reverse repurchase agreement balances. Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Loans and advances to customers: Retail - UK mortgages RMS 1-6 1,720 — — 1,720 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 1,720 — — 1,720 — — — — Retail - credit cards RMS 1-6 14,814 1,081 — 15,895 17 19 — 36 RMS 7-9 154 154 — 308 3 4 — 7 RMS 10 3 21 — 24 — 1 — 1 RMS 11-13 — 24 — 24 — 2 — 2 RMS 14 — — 13 13 — — — — 14,971 1,280 13 16,264 20 26 — 46 Retail - loan and overdrafts RMS 1-6 3,414 99 — 3,513 8 4 — 12 RMS 7-9 160 74 — 234 4 8 — 12 RMS 10 8 22 — 30 1 4 — 5 RMS 11-13 2 42 — 44 — 12 — 12 RMS 14 — — 10 10 — — — — 3,584 237 10 3,831 13 28 — 41 Retail - UK Motor Finance RMS 1-6 24 — — 24 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 24 — — 24 — — — — Retail - other RMS 1-6 923 18 — 941 6 2 — 8 RMS 7-9 131 31 — 162 8 12 — 20 RMS 10 — — — — — — — — RMS 11-13 — 10 — 10 — 6 — 6 RMS 14 — — 1 1 — — — — 1,054 59 1 1,114 14 20 — 34 Total Retail 21,353 1,576 24 22,953 47 74 — 121 Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2020 Commercial CMS 1-10 27,598 — — 27,598 14 — — 14 CMS 11-14 8,105 1,239 — 9,344 26 13 — 39 CMS 15-18 829 1,057 — 1,886 13 41 — 54 CMS 19 — 54 — 54 — 7 — 7 CMS 20-23 — — 189 189 — — 8 8 36,532 2,350 189 39,071 53 61 8 122 Other RMS 1-6 242 — — 242 2 — — 2 RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 242 — — 242 2 — — 2 CMS 1-10 500 — — 500 — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 500 — — 500 — — — — Total loans and advances to customers 58,627 3,926 213 62,766 102 135 8 245 In respect of: Retail 21,353 1,576 24 22,953 47 74 — 121 Commercial 36,532 2,350 189 39,071 53 61 8 122 Other 742 — — 742 2 — — 2 Total loans and advances to customers 58,627 3,926 213 62,766 102 135 8 245 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to banks: CMS 1-10 4,453 — — 4,453 — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 4,453 — — 4,453 — — — — Loans and advances to customers: Retail - UK mortgages RMS 1-6 46,904 2,972 — 49,876 2 28 — 30 RMS 7-9 — 510 — 510 — 7 — 7 RMS 10 — 116 — 116 — 3 — 3 RMS 11-13 — 291 — 291 — 9 — 9 RMS 14 — — 558 558 — — 30 30 46,904 3,889 558 51,351 2 47 30 79 Retail - credit cards RMS 1-6 3,568 146 — 3,714 22 6 — 28 RMS 7-9 363 183 — 546 14 20 — 34 RMS 10 12 38 — 50 1 7 — 8 RMS 11-13 — 90 — 90 — 30 — 30 RMS 14 — — 92 92 — — 31 31 3,943 457 92 4,492 37 63 31 131 Retail - loans and overdrafts RMS 1-6 4,018 152 — 4,170 47 7 — 54 RMS 7-9 774 199 — 973 32 21 — 53 RMS 10 26 51 — 77 3 9 — 12 RMS 11-13 8 184 — 192 2 59 — 61 RMS 14 — — 168 168 — — 62 62 4,826 586 168 5,580 84 96 62 242 Retail - UK Motor Finance RMS 1-6 1,076 135 — 1,211 21 4 — 25 RMS 7-9 22 54 — 76 1 3 — 4 RMS 10 — 17 — 17 — 2 — 2 RMS 11-13 — 34 — 34 — 7 — 7 RMS 14 — — 60 60 — — 32 32 1,098 240 60 1,398 22 16 32 70 Retail - other RMS 1-6 1,958 156 — 2,114 18 4 — 22 RMS 7-9 7 281 — 288 — 20 — 20 RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 105 105 — — 35 35 1,965 437 105 2,507 18 24 35 77 Total Retail 58,736 5,609 983 65,328 163 246 190 599 Drawn exposures Expected credit loss allowance The Bank - Gross drawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 32,465 380 — 32,845 25 1 — 26 CMS 11-14 20,141 2,030 — 22,171 40 33 — 73 CMS 15-18 1,462 2,519 — 3,981 10 145 — 155 CMS 19 — 111 — 111 — 10 — 10 CMS 20-23 — — 1,400 1,400 — — 309 309 54,068 5,040 1,400 60,508 75 189 309 573 Other RMS 1-6 267 32 — 299 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 2 2 — — 1 1 267 32 2 301 — — 1 1 CMS 1-10 52,605 — — 52,605 — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — 52,605 — — 52,605 — — — — Total loans and advances to customers 165,676 10,681 2,385 178,742 238 435 500 1,173 In respect of: Retail 58,736 5,609 983 65,328 163 246 190 599 Commercial 54,068 5,040 1,400 60,508 75 189 309 573 Other 1 52,872 32 2 52,906 — — 1 1 Total loans and advances to customers 165,676 10,681 2,385 178,742 238 435 500 1,173 1 Principally comprises reverse repurchase agreement balances. Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Loans and advances to customers: Retail - UK mortgages RMS 1-6 1,120 — — 1,120 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 1,120 — — 1,120 — — — — Retail - credit cards RMS 1-6 15,052 369 — 15,421 12 7 — 19 RMS 7-9 96 60 — 156 1 1 — 2 RMS 10 1 8 — 9 — — — — RMS 11-13 — 11 — 11 — 1 — 1 RMS 14 — — 13 13 — — — — 15,149 448 13 15,610 13 9 — 22 Retail - loans and overdrafts RMS 1-6 3,619 68 — 3,687 7 2 — 9 RMS 7-9 59 31 — 90 1 3 — 4 RMS 10 1 7 — 8 — 1 — 1 RMS 11-13 — 17 — 17 — 8 — 8 RMS 14 — — 5 5 — — — — 3,679 123 5 3,807 8 14 — 22 Retail - UK Motor Finance RMS 1-6 84 — — 84 — — — — RMS 7-9 13 4 — 17 — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 97 4 — 101 — — — — Retail - other RMS 1-6 839 — — 839 10 — — 10 RMS 7-9 — 54 — 54 — 3 — 3 RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — 2 2 — — — — 839 54 2 895 10 3 — 13 Total Retail 20,884 629 20 21,533 31 26 — 57 Undrawn exposures Expected credit loss allowance The Bank - Gross undrawn exposures and expected credit loss allowances continued Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total £m £m £m £m £m £m £m £m At 31 December 2019 Commercial CMS 1-10 25,847 44 — 25,891 5 — — 5 CMS 11-14 3,771 718 — 4,489 7 5 — 12 CMS 15-18 197 206 — 403 1 9 — 10 CMS 19 — 38 — 38 — 2 — 2 CMS 20-23 — — 4 4 — — 4 4 29,815 1,006 4 30,825 13 16 4 33 Other RMS 1-6 191 — — 191 — — — — RMS 7-9 — — — — — — — — RMS 10 — — — — — — — — RMS 11-13 — — — — — — — — RMS 14 — — — — — — — — 191 — — 191 — — — — CMS 1-10 — — — — — — — — CMS 11-14 — — — — — — — — CMS 15-18 — — — — — — — — CMS 19 — — — — — — — — CMS 20-23 — — — — — — — — — — — — — — — — Total loans and advances to customers 50,890 1,635 24 52,549 44 42 4 90 In respect of: Retail 20,884 629 20 21,533 31 26 — 57 Commercial 29,815 1,006 4 30,825 13 16 4 33 Other 191 — — 191 — — — — Total loans and advances to customers 50,890 1,635 24 52,549 44 42 4 90
Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss	. Substantially all of the loans and advances to customers and banks recognised at fair value through profit or loss have a good quality rating. The credit quality of the Group’s debt securities, treasury and other bills held at fair value through profit or loss is set out below. 2020 2019 The Group Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total £m £m £m £m £m £m Trading assets Government securities — — — 290 — 290 Total held as trading assets — — — 290 — 290 Other assets mandatorily at fair value through profit or loss Corporate and other debt securities — — — 47 — 47 Total other assets mandatorily at fair value through profit or loss — — — 47 — 47 — — — 337 — 337 Due from fellow Lloyds Banking Group undertakings: Corporate and other debt securities — — Total held at fair value through profit or loss — 337 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £nil; 2019: £nil) and not rated (2020: £nil; 2019: £nil). 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Bank £m £m £m £m £m £m Trading assets Government securities — — — 290 — 290 Total held as trading assets — — — 290 — 290 Other assets mandatorily at fair value through profit or loss Corporate and other debt securities — — — 47 — 47 Total other assets mandatorily at fair value through profit or loss — — — 47 — 47 — — — 337 — 337 Due from fellow Lloyds Banking Group undertakings: Corporate and other debt securities 1,203 — Total held at fair value through profit or loss 1,203 337 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £nil; 2019: £nil) and not rated (2020: £nil; 2019: £nil).
Schedule of Mortgage Lending	The Group Stage 1 Stage 2 Stage 3 POCI Total gross £m £m £m £m £m At 31 December 2020 Less than 70 per cent 185,548 24,330 1,547 10,051 221,476 70 per cent to 80 per cent 43,656 3,364 187 1,303 48,510 80 per cent to 90 per cent 21,508 1,009 74 470 23,061 90 per cent to 100 per cent 555 126 21 190 892 Greater than 100 per cent 151 189 30 497 867 Total 251,418 29,018 1,859 12,511 294,806 The Group Stage 1 Stage 2 Stage 3 POCI Total gross £m £m £m £m £m At 31 December 2019 Less than 70 per cent 179,566 13,147 1,174 10,728 204,615 70 per cent to 80 per cent 44,384 2,343 181 1,751 48,659 80 per cent to 90 per cent 27,056 1,057 86 677 28,876 90 per cent to 100 per cent 5,663 199 34 207 6,103 Greater than 100 per cent 374 189 31 351 945 Total 257,043 16,935 1,506 13,714 289,198 The Bank Stage 1 Stage 2 Stage 3 Total gross £m £m £m £m At 31 December 2020 Less than 70 per cent 36,418 5,639 456 42,513 70 per cent to 80 per cent 3,603 712 66 4,381 80 per cent to 90 per cent 1,298 239 30 1,567 90 per cent to 100 per cent 94 42 9 145 Greater than 100 per cent 12 45 7 64 Total 41,425 6,677 568 48,670 The Bank Stage 1 Stage 2 Stage 3 Total gross £m £m £m £m At 31 December 2019 Less than 70 per cent 39,054 3,004 424 42,482 70 per cent to 80 per cent 4,848 529 68 5,445 80 per cent to 90 per cent 2,428 264 38 2,730 90 per cent to 100 per cent 516 49 18 583 Greater than 100 per cent 58 43 10 111 Total 46,904 3,889 558 51,351
Available-for-sale financial assets (excluding equity shares)
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares)	. The credit quality of financial assets at fair value through other comprehensive income is set out below: 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Group £m £m £m £m £m £m Debt securities Government securities 14,267 — 14,267 13,082 — 13,082 Asset-backed securities — 65 65 — 60 60 Corporate and other debt securities 12,786 142 12,928 11,036 — 11,036 Total debt securities 27,053 207 27,260 24,118 60 24,178 Treasury and other bills — — — 439 — 439 Total financial assets at fair value through other comprehensive income 27,053 207 27,260 24,557 60 24,617 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £65 million; 2019: £60 million) and not rated (2020: £142 million; 2019: £nil). 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Bank £m £m £m £m £m £m Debt securities Government securities 14,114 — 14,114 12,938 — 12,938 Corporate and other debt securities 10,444 89 10,533 8,783 — 8,783 Total debt securities 24,558 89 24,647 21,721 — 21,721 Treasury and other bills — — — 439 — 439 24,558 89 24,647 22,160 — 22,160 Due from fellow Lloyds Banking Group undertakings: Corporate and other debt securities — — Total financial assets at fair value through other comprehensive income 24,647 22,160 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £nil; 2019: £nil) and not rated (2020: £89 million; 2019: £nil).
Derivative assets
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Derivative Assets	2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Group £m £m £m £m £m £m Trading and other 5,942 1,037 6,979 5,531 1,267 6,798 Hedging 667 5 672 1,047 58 1,105 6,609 1,042 7,651 6,578 1,325 7,903 Due from fellow Lloyds Banking Group undertakings 690 591 Total derivative financial instruments 8,341 8,494 The Bank Trading and other 4,442 146 4,588 4,113 209 4,322 Hedging 237 3 240 178 1 179 4,679 149 4,828 4,291 210 4,501 Due from fellow Lloyds Banking Group undertakings 7,767 9,137 Total derivative financial instruments 12,595 13,638 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £969 million for the Group and £135 million for the Bank; 2019: £953 million for the Group and £135 million for the Bank) and not rated (2020: £73 million for the Group and £14 million for the Bank; 2019: £372 million for the Group and £75 million for the Bank).
Concentrations of risk
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Concentration of Exposure	The Group The Bank 2020 2019 2020 2019 £m £m £m £m Agriculture, forestry and fishing 7,835 7,557 3,039 2,949 Energy and water supply 1,274 1,423 1,189 1,328 Manufacturing 4,455 4,869 3,770 3,811 Construction 5,046 4,190 4,022 3,255 Transport, distribution and hotels 14,229 12,657 10,160 8,350 Postal and telecommunications 2,261 1,679 1,689 1,130 Property companies 25,092 26,736 21,629 22,982 Financial, business and other services 77,271 73,087 73,987 68,461 Personal: Mortgages 1 305,966 298,294 49,574 52,341 Other 25,295 29,165 8,502 10,060 Lease financing 1,047 1,536 30 93 Hire purchase 16,071 16,440 2,959 3,982 Total loans and advances to customers before allowance for impairment losses 485,842 477,633 180,550 178,742 Allowance for impairment losses (note 16) (5,701) (3,163) (2,281) (1,173) Total loans and advances to customers 480,141 474,470 178,269 177,569 1 Includes both UK and overseas mortgage balances.
Loans and advances securitised
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Securities Lending Transactions	The following on balance sheet financial assets have been lent to counterparties under securities lending transactions: The Group The Bank 2020 2019 2020 2019 £m £m £m £m Financial assets at fair value through profit or loss — 470 1,365 634 Financial assets at fair value through other comprehensive income 2,344 854 969 1,467 2,344 1,324 2,334 2,101
Loans to corporate entities
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Debt Securities Classified as Loans and Receivables	Debt securities held at amortised cost An analysis by credit rating of debt securities held at amortised cost is provided below: 2020 2019 Investment grade 1 Other 2 Total Investment grade 1 Other 2 Total The Group £m £m £m £m £m £m Asset-backed securities: Mortgage-backed securities 2,046 — 2,046 2,934 — 2,934 Other asset-backed securities 1,593 20 1,613 874 — 874 3,639 20 3,659 3,808 — 3,808 Corporate and other debt securities 1,463 16 1,479 1,517 1 1,518 Gross exposure 5,102 36 5,138 5,325 1 5,326 Allowance for impairment losses (1) (1) Total debt securities held at amortised cost 5,137 5,325 The Bank Asset-backed securities: Mortgage-backed securities 1,741 — 1,741 2,926 — 2,926 Other asset-backed securities 1,103 — 1,103 798 — 798 2,844 — 2,844 3,724 — 3,724 Corporate and other debt securities 1,457 15 1,472 1,517 — 1,517 Gross exposure 4,301 15 4,316 5,241 — 5,241 Allowance for impairment losses (1) — Total debt securities held at amortised cost 4,315 5,241 1 Credit ratings equal to or better than ‘BBB’. 2 Other comprises sub-investment grade (2020: £8 million for the Group and £nil for the Bank; 2019: £nil for the Group and £nil for the Bank) and not rated (2020: £28 million for the Group and £15 million for the Bank; 2019: £1 million for the Group and £nil for the Bank).
Financial liabilities, category [Member]
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Maturities of Liabilities	The Group Up to 1 1-3 3-12 1-5 Over 5 Total £m £m £m £m £m £m At 31 December 2020 Deposits from banks 7,369 1,564 72 19,438 498 28,941 Customer deposits 413,374 9,871 5,366 5,542 595 434,748 Financial liabilities at fair value through profit or loss 40 45 141 1,702 10,110 12,038 Debt securities in issue 5,019 5,195 9,706 33,338 11,594 64,852 Other liabilities (lease liabilities) 10 51 174 626 751 1,612 Subordinated liabilities 81 69 3,609 4,261 3,601 11,621 Total non-derivative financial liabilities 425,893 16,795 19,068 64,907 27,149 553,812 Derivative financial liabilities: Gross settled derivatives – outflows 4,358 4,818 4,390 15,787 8,397 37,750 Gross settled derivatives – inflows (3,795) (4,312) (4,272) (15,696) (8,885) (36,960) Gross settled derivatives – net flows 563 506 118 91 (488) 790 Net settled derivative liabilities 4,648 7 89 216 329 5,289 Total derivative financial liabilities 5,211 513 207 307 (159) 6,079 The Group Up to 1 1-3 3-12 1-5 Over 5 Total £m £m £m £m £m £m At 31 December 2019 Deposits from banks 4,099 2,302 248 17,142 317 24,108 Customer deposits 368,331 11,440 11,861 9,271 1,276 402,179 Financial liabilities at fair value through profit or loss 30 71 298 1,330 13,213 14,942 Debt securities in issue 4,174 8,186 15,117 41,816 28,696 97,989 Other liabilities (lease liabilities) 2 60 187 793 935 1,977 Subordinated liabilities 245 1,472 1,711 7,593 6,513 17,534 Total non-derivative financial liabilities 376,881 23,531 29,422 77,945 50,950 558,729 Derivative financial liabilities: Gross settled derivatives – outflows 2,492 3,053 10,815 25,935 13,884 56,179 Gross settled derivatives – inflows (968) (2,636) (10,744) (25,838) (13,829) (54,015) Gross settled derivatives – net flows 1,524 417 71 97 55 2,164 Net settled derivative liabilities 14,654 (16) 1 129 383 15,151 Total derivative financial liabilities 16,178 401 72 226 438 17,315 The Bank Up to 1 1-3 3-12 1-5 Over 5 Total £m £m £m £m £m £m At 31 December 2020 Deposits from banks 7,353 1,562 15 1,108 361 10,399 Customer deposits 254,667 7,185 1,334 819 457 264,462 Financial liabilities at fair value through profit or loss 40 45 141 1,701 10,065 11,992 Debt securities in issue 4,502 4,200 6,404 27,908 9,408 52,422 Other liabilities (lease liabilities) 1 34 97 326 445 903 Subordinated liabilities 9 43 3,069 3,517 3,016 9,654 Total non-derivative financial liabilities 266,572 13,069 11,060 35,379 23,752 349,832 Derivative financial liabilities: Gross settled derivatives – outflows 3,881 4,737 3,433 15,174 6,337 33,562 Gross settled derivatives – inflows (3,405) (4,291) (3,336) (15,076) (6,629) (32,737) Gross settled derivatives – net flows 476 446 97 98 (292) 825 Net settled derivative liabilities 3,885 5 3 146 208 4,247 Total derivative financial liabilities 4,361 451 100 244 (84) 5,072 The Bank Up to 1 1-3 3-12 1-5 Over 5 Total £m £m £m £m £m £m At 31 December 2019 Deposits from banks 3,933 2,302 144 824 317 7,520 Customer deposits 227,825 9,620 4,727 1,330 1,176 244,678 Financial liabilities at fair value through profit or loss 30 71 298 1,330 13,165 14,894 Debt securities in issue 3,323 4,341 12,569 34,779 26,628 81,640 Other liabilities (lease liabilities) 1 35 109 446 513 1,104 Subordinated liabilities 173 1,416 1,572 6,254 3,497 12,912 Total non-derivative financial liabilities 235,285 17,785 19,419 44,963 45,296 362,748 Derivative financial liabilities: Gross settled derivatives – outflows 1,631 2,906 10,228 24,164 12,130 51,059 Gross settled derivatives – inflows (932) (2,523) (10,160) (24,038) (11,911) (49,564) Gross settled derivatives – net flows 699 383 68 126 219 1,495 Net settled derivative liabilities 10,539 (19) (6) 59 243 10,816 Total derivative financial liabilities 11,238 364 62 185 462 12,311
Off balance sheet
FINANCIAL RISK MANAGEMENT (Tables) [Line Items]
Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments	The following tables set out the amounts and residual maturities of off balance sheet contingent liabilities, commitments and guarantees. The Group Within 1 1-3 3-5 Over 5 Total £m £m £m £m £m At 31 December 2020 Acceptances and endorsements 73 — — — 73 Other contingent liabilities 1,302 337 69 583 2,291 Total contingent liabilities 1,375 337 69 583 2,364 Lending commitments and guarantees 102,279 18,152 9,454 3,588 133,473 Other commitments 1 44 16 64 125 Total commitments and guarantees 102,280 18,196 9,470 3,652 133,598 Total contingents, commitments and guarantees 103,655 18,533 9,539 4,235 135,962 At 31 December 2019 Acceptances and endorsements 17 — — — 17 Other contingent liabilities 1,422 349 99 683 2,553 Total contingent liabilities 1,439 349 99 683 2,570 Lending commitments and guarantees 90,953 11,756 10,571 2,983 116,263 Other commitments 5 71 43 52 171 Total commitments and guarantees 90,958 11,827 10,614 3,035 116,434 Total contingents, commitments and guarantees 92,397 12,176 10,713 3,718 119,004 The Bank Within 1 1-3 3-5 Over 5 Total £m £m £m £m £m At 31 December 2020 Acceptances and endorsements 73 — — — 73 Other contingent liabilities 1,144 328 68 480 2,020 Total contingent liabilities 1,217 328 68 480 2,093 Lending commitments and guarantees 34,552 16,319 9,127 2,672 62,670 Other commitments — 27 16 53 96 Total commitments and guarantees 34,552 16,346 9,143 2,725 62,766 Total contingents, commitments and guarantees 35,769 16,674 9,211 3,205 64,859 At 31 December 2019 Acceptances and endorsements 16 — — — 16 Other contingent liabilities 1,323 271 99 580 2,273 Total contingent liabilities 1,339 271 99 580 2,289 Lending commitments and guarantees 30,727 9,806 9,694 2,165 52,392 Other commitments 5 71 43 38 157 Total commitments and guarantees 30,732 9,877 9,737 2,203 52,549 Total contingents, commitments and guarantees 32,071 10,148 9,836 2,783 54,838

CASH FLOW STATEMENTS (Tables)

CASH FLOW STATEMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of cash flow statement [text block] [Abstract]
Schedule of Change in Operating Assets	Change in operating assets The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Change in financial assets held at amortised cost (9,688) (11,832) (10,338) (1,815) (5,482) (992) Change in amounts due from fellow Lloyds Banking Group undertakings 1,116 24 4,827 73,506 (48,692) 9,875 Change in derivative financial instruments and financial assets at fair value through profit or loss 1,089 24,649 40,137 (268) 22,568 37,356 Change in other operating assets 627 63 (442) 239 63 295 Change in operating assets (6,856) 12,904 34,184 71,662 (31,543) 46,534
Schedule of Non-Cash and Other Items	Change in operating liabilities The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Change in deposits from banks 1,404 (2,670) (2,677) 3,182 1,802 (2,219) Change in customer deposits 37,728 5,593 (11,901) 24,711 10,360 (5,258) Change in amounts due to fellow Lloyds Banking Group undertakings (1,316) (8,142) (5,466) (73,233) 28,016 (23,522) Change in debt securities in issue (17,138) 11,898 4,730 (13,400) 11,722 1,442 Change in derivative financial instruments and financial liabilities at fair value through profit or loss (2,549) (11,527) (45,383) (3,004) (10,776) (46,514) Change in investment contract liabilities — — (353) — — — Change in other operating liabilities 1 (288) (782) (383) (249) (1,823) (648) Change in operating liabilities 17,841 (5,630) (61,433) (61,993) 39,301 (76,719) 1 Includes a decrease of £163 million (2019: increase of £43 million; 2018: increase of £27 million) for the Group and a decrease of £42 million (2019: increase of £20 million; 2018: increase of £27 million) for the Bank in respect of lease liabilities.
Schedule of Non-Cash and Other Items	Non-cash and other items The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Depreciation and amortisation 2,670 2,602 2,374 1,325 1,245 1,031 Permanent diminution in value of investment in subsidiaries — — — — 159 92 Dividends and distributions on other equity instruments received from subsidiary undertakings — — — (211) (1,434) (4,968) Revaluation of investment properties 20 8 (46) — — — Allowance for loan losses 3,802 1,380 1,012 1,742 490 553 Write-off of allowance for loan losses, net of recoveries (1,279) (1,457) (1,000) (622) (759) (608) Impairment charge relating to undrawn balances 253 (17) (72) 155 14 (46) Impairment of financial assets at fair value through other comprehensive income 5 (1) (14) 1 (1) (2) Change in insurance contract liabilities — — (1,520) — — — Payment protection insurance provision 85 1,795 1,395 169 859 628 Other regulatory provisions 329 395 561 143 137 311 Other provision movements 80 (161) (509) 18 (43) (413) Additional capital injections to subsidiaries — — — (33) (53) (72) Net charge in respect of defined benefit schemes 247 245 404 121 131 196 Unwind of discount on impairment allowances (47) (52) (39) (31) (32) (33) Foreign exchange impact on balance sheet 1 823 420 (365) 491 (230) (130) Interest expense on subordinated liabilities 846 947 1,072 534 657 654 Loss (profit) on disposal of businesses — (107) (1,010) — — 21 Other non-cash items (1,169) (295) 933 (308) (142) 990 Total non-cash items 6,665 5,702 3,176 3,494 998 (1,796) Contributions to defined benefit schemes (1,153) (1,069) (868) (650) (563) (455) Payments in respect of payment protection insurance provision (1,700) (2,457) (2,101) (726) (1,156) (1,057) Payments in respect of other regulatory provisions (465) (707) (956) (233) (229) (302) Other 137 — 6 (65) — — Total other items (3,181) (4,233) (3,919) (1,674) (1,948) (1,814) Non-cash and other items 3,484 1,469 (743) 1,820 (950) (3,610) 1 When considering the movement on each line of the balance sheet, the impact of foreign exchange rate movements is removed in order to show the underlying cash impact.
Schedule of Analysis of Cash and Cash Equivalents as Shown in the Balance Sheet	Analysis of cash and cash equivalents as shown in the balance sheet The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Cash and balances at central banks 49,888 38,880 40,213 45,753 35,741 37,632 Less: mandatory reserve deposits 1 (4,392) (3,177) (2,541) (954) (764) (803) 45,496 35,703 37,672 44,799 34,977 36,829 Loans and advances to banks 5,950 4,852 3,692 5,656 4,453 3,153 Less: amounts with a maturity of three months or more (2,480) (1,941) (1,641) (2,387) (1,648) (1,328) 3,470 2,911 2,051 3,269 2,805 1,825 Total cash and cash equivalents 48,966 38,614 39,723 48,068 37,782 38,654 1 Mandatory reserve deposits are held with local central banks in accordance with statutory requirements; these deposits are not available to finance the Group's day-to-day operations.
Schedule of Acquisition of Group Undertakings and Businesses	Acquisition of group undertakings and businesses The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Net assets acquired: Intangible assets — — 21 — — — Other assets — — 6 — — — Other liabilities — — (1) — — — Cash consideration — — 26 — — — Less: cash and cash equivalents acquired — — — — — — Net cash outflow arising from acquisitions of subsidiaries and businesses — — 26 — — — Investment in subsidiary acquired — — — — — 98 Net cash outflow from acquisitions in the year — — 26 — — 98
Schedule of Disposal and Closure of Group Undertakings and Businesses	Disposal of group undertakings and businesses The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Financial assets at fair value through profit or loss — — 125,379 — — — Loans and advances to customers — — 3,495 — — — Due from fellow group undertakings — — 14,436 — — — Derivative financial instruments — — 3,027 — — — Investment property — — 3,639 — — — Goodwill — — 1,836 — — — Value of in-force business — — 4,902 — — — Property, plant and equipment — — 48 — — — — — 156,762 — — — Customer deposits — — (15,236) — — — Due to fellow Lloyds Banking Group undertakings — — (2,584) — — — Derivative financial instruments — — (2,762) — — — Liabilities from insurance and investment contracts — — (117,021) — — — Subordinated liabilities — — (2,494) — — — Non-controlling interests — — (305) — — — Other net liabilities — — (8,759) — — — — — (149,161) — — — Net assets disposed of — — 7,601 — — — Investment in subsidiary disposed of — — — — 20 7,725 Profit (loss) on sale of businesses — 107 1,010 — — (21) Cash consideration received on losing control of group undertakings and businesses — 107 8,611 — 20 7,704 Cash and cash equivalents disposed — — (7) — — — Net cash inflow — 107 8,604 — 20 7,704

ACCOUNTING POLICIES (Details)

ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2020
Bottom of range | Brands
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
Bottom of range | Fixtures and furnishings
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
Bottom of range | Equipment and motor vehicles
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	2 years
Top of range | Freehold long and short leasehold premises
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	50 years
Top of range | Leasehold improvements
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
Top of range | Capitalised software enhancements
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	7 years
Top of range | Brands
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	15 years
Top of range | Fixtures and furnishings
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	20 years
Top of range | Equipment and motor vehicles
ACCOUNTING POLICIES (Details) [Line Items]
Useful life measured as period of time, property, plant and equipment	8 years

CRITICAL ACCOUNTING JUDGEMENT_3

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Disclosure of Allowance for Expected Credit Losses - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets	£ 6,132	£ 3,380
Stage 2
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Loans and advances to customers	600	600
The Group
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Total allowance for impairment loss	6,132	3,380
Loans and advances to customers	480,141	474,470
The Group | Drawn balance
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets	5,706	3,207
The Bank
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Total allowance for impairment loss	2,558	1,336
Loans and advances to customers	178,269	177,569
The Bank | Drawn balance
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets	£ 2,313	£ 1,246

CRITICAL ACCOUNTING JUDGEMENT_4

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Disclosure of Significant Increase in Credit Risk £ in Millions	12 Months Ended
	Dec. 31, 2020GBP (£)grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in ECL, transferred to lifetime expected loss | £	£ 48
Loans and advances, payment holiday granted | £	6,400
Increase in ECL due to increase in stage from payment holidays | £	£ 50
1
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	10.00%
2
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	40.00%
3
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	80.00%
4
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	120.00%
5
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	250.00%
6
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	450.00%
7
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	750.00%
8
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	1000.00%
9
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	1400.00%
10
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	2000.00%
11
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	3000.00%
12
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	4500.00%
13
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	9999.00%
14
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
PD Boundary % (in percent)	10000.00%
1 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	5
1 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	4
1 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	5
2 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	5
2 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	5
2 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	6
3 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	6
3 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	6
3 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	7
4 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	7
4 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	7
4 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	8
5 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	8
5 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	8
5 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	9
6 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	9
6 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	9
6 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	10
7 | Mortgages SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	10
7 | Credit cards SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	10
7 | Loans and overdrafts SICR grade
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Financial asset, SICR grade	11
Stage 2
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Additions to financial assets | £	£ 1,400
Stage 1
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Loans and advances, payment holiday granted | £	£ 4,300

CRITICAL ACCOUNTING JUDGEMENT_5

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative Disclosure of Generation of Multiple Economic Assumptions - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other economic impacts
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Increase in allowance account for credit losses of financial assets	£ 200
Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Probability of default weight (in percent)	30.00%	30.00%
Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Probability of default weight (in percent)	30.00%	30.00%
Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Probability of default weight (in percent)	30.00%	30.00%
Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Probability of default weight (in percent)	10.00%	10.00%

CRITICAL ACCOUNTING JUDGEMENT_6

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Disclosure of Scenarios by Quarter and Year	Dec. 31, 2020
First quarter 2020 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(3.00%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.00%
House price growth (in percent)	2.80%
Commercial real estate price growth (in percent)	(5.00%)
Second quarter 2020 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(18.80%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.10%
House price growth (in percent)	2.60%
Commercial real estate price growth (in percent)	(7.80%)
Third quarter 2020 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	16.00%
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.80%
House price growth (in percent)	7.20%
Commercial real estate price growth (in percent)	(7.80%)
Fourth quarter 2020 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(1.90%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	5.00%
House price growth (in percent)	5.90%
Commercial real estate price growth (in percent)	(7.00%)
First quarter 2021 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(3.80%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	5.20%
House price growth (in percent)	5.50%
Commercial real estate price growth (in percent)	(6.10%)
Second quarter 2021 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	5.60%
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	6.50%
House price growth (in percent)	4.70%
Commercial real estate price growth (in percent)	(2.90%)
Third quarter 2021 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	3.60%
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	8.00%
House price growth (in percent)	(1.60%)
Commercial real estate price growth (in percent)	(2.20%)
Fourth quarter 2021 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.50%
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	7.50%
House price growth (in percent)	(3.80%)
Commercial real estate price growth (in percent)	(1.70%)
2020 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(10.50%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.50%
House price growth (in percent)	5.90%
Commercial real estate price growth (in percent)	(7.00%)
2020 | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(10.50%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.30%
House price growth (in percent)	6.30%
Commercial real estate price growth (in percent)	(4.60%)
2020 | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(10.60%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.60%
House price growth (in percent)	5.60%
Commercial real estate price growth (in percent)	(8.70%)
2020 | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(10.80%)
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	4.80%
House price growth (in percent)	5.30%
Commercial real estate price growth (in percent)	(11.00%)
2021 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	3.00%
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	6.80%
House price growth (in percent)	(3.80%)
Commercial real estate price growth (in percent)	(1.70%)
2021 | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	3.70%
UK Bank Rate (in percent)	1.14%
Unemployment rate (in percent)	5.40%
House price growth (in percent)	(1.40%)
Commercial real estate price growth (in percent)	9.30%
2021 | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.70%
UK Bank Rate (in percent)	0.06%
Unemployment rate (in percent)	7.90%
House price growth (in percent)	(8.40%)
Commercial real estate price growth (in percent)	(10.60%)
2021 | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	0.30%
UK Bank Rate (in percent)	0.00%
Unemployment rate (in percent)	9.90%
House price growth (in percent)	(11.10%)
Commercial real estate price growth (in percent)	(21.40%)
2022 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	6.00%
UK Bank Rate (in percent)	0.10%
Unemployment rate (in percent)	6.80%
House price growth (in percent)	0.50%
Commercial real estate price growth (in percent)	1.60%
2022 | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	5.70%
UK Bank Rate (in percent)	1.27%
Unemployment rate (in percent)	5.40%
House price growth (in percent)	5.20%
Commercial real estate price growth (in percent)	3.90%
2022 | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	5.10%
UK Bank Rate (in percent)	0.02%
Unemployment rate (in percent)	8.40%
House price growth (in percent)	(6.50%)
Commercial real estate price growth (in percent)	(3.20%)
2022 | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	4.80%
UK Bank Rate (in percent)	0.00%
Unemployment rate (in percent)	10.70%
House price growth (in percent)	(12.50%)
Commercial real estate price growth (in percent)	(9.80%)
2023 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.70%
UK Bank Rate (in percent)	0.21%
Unemployment rate (in percent)	6.10%
House price growth (in percent)	1.50%
Commercial real estate price growth (in percent)	1.10%
2023 | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.70%
UK Bank Rate (in percent)	1.20%
Unemployment rate (in percent)	5.00%
House price growth (in percent)	6.00%
Commercial real estate price growth (in percent)	2.10%
2023 | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.40%
UK Bank Rate (in percent)	0.02%
Unemployment rate (in percent)	7.80%
House price growth (in percent)	(4.70%)
Commercial real estate price growth (in percent)	(0.80%)
2023 | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.30%
UK Bank Rate (in percent)	0.01%
Unemployment rate (in percent)	9.80%
House price growth (in percent)	(10.70%)
Commercial real estate price growth (in percent)	(3.90%)
2024 | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.40%
UK Bank Rate (in percent)	0.25%
Unemployment rate (in percent)	5.50%
House price growth (in percent)	1.50%
Commercial real estate price growth (in percent)	0.60%
2024 | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.50%
UK Bank Rate (in percent)	1.21%
Unemployment rate (in percent)	4.50%
House price growth (in percent)	5.00%
Commercial real estate price growth (in percent)	0.30%
2024 | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.40%
UK Bank Rate (in percent)	0.03%
Unemployment rate (in percent)	7.00%
House price growth (in percent)	(3.00%)
Commercial real estate price growth (in percent)	(0.80%)
2024 | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.20%
UK Bank Rate (in percent)	0.01%
Unemployment rate (in percent)	8.70%
House price growth (in percent)	(7.60%)
Commercial real estate price growth (in percent)	(0.80%)

CRITICAL ACCOUNTING JUDGEMENT_7

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Disclosure of Generation of Economic Assumptions	Dec. 31, 2020	Dec. 31, 2019
Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	0.30%	1.60%
UK Bank Rate (in percent)	0.98%	1.87%
Unemployment rate (in percent)	5.00%	3.90%
House price growth (in percent)	4.20%	5.10%
Commercial real estate price growth (in percent)	2.10%	1.60%
Upside | Start to peak
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	1.40%	8.40%
UK Bank Rate (in percent)	1.44%	2.56%
Unemployment rate (in percent)	6.50%	4.40%
House price growth (in percent)	22.60%	28.30%
Commercial real estate price growth (in percent)	11.00%	8.80%
Upside | Start to trough
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(21.20%)	0.30%
UK Bank Rate (in percent)	0.10%	0.75%
Unemployment rate (in percent)	4.00%	3.40%
House price growth (in percent)	(0.50%)	1.50%
Commercial real estate price growth (in percent)	(6.90%)	(1.40%)
Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	0.10%	1.30%
UK Bank Rate (in percent)	0.15%	1.15%
Unemployment rate (in percent)	5.90%	4.30%
House price growth (in percent)	1.10%	1.40%
Commercial real estate price growth (in percent)	(1.10%)	(0.30%)
Base case | Start to peak
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	0.80%	6.60%
UK Bank Rate (in percent)	0.25%	1.75%
Unemployment rate (in percent)	8.00%	4.60%
House price growth (in percent)	5.90%	7.10%
Commercial real estate price growth (in percent)	(2.70%)	(0.80%)
Base case | Start to trough
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(21.20%)	0.30%
UK Bank Rate (in percent)	0.10%	0.75%
Unemployment rate (in percent)	4.00%	3.80%
House price growth (in percent)	(0.50%)	0.00%
Commercial real estate price growth (in percent)	(9.00%)	(2.30%)
Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(0.40%)	1.00%
UK Bank Rate (in percent)	0.05%	0.51%
Unemployment rate (in percent)	7.10%	5.50%
House price growth (in percent)	(3.50%)	(2.50%)
Commercial real estate price growth (in percent)	(4.90%)	(3.90%)
Downside | Start to peak
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(1.70%)	5.50%
UK Bank Rate (in percent)	0.10%	0.75%
Unemployment rate (in percent)	9.30%	6.90%
House price growth (in percent)	5.60%	2.70%
Commercial real estate price growth (in percent)	(2.70%)	(0.80%)
Downside | Start to trough
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(21.20%)	0.30%
UK Bank Rate (in percent)	0.01%	0.35%
Unemployment rate (in percent)	4.00%	3.80%
House price growth (in percent)	(16.40%)	(12.00%)
Commercial real estate price growth (in percent)	(22.20%)	(17.90%)
Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(0.80%)	0.30%
UK Bank Rate (in percent)	0.02%	0.17%
Unemployment rate (in percent)	8.80%	6.70%
House price growth (in percent)	(7.50%)	(7.00%)
Commercial real estate price growth (in percent)	(9.70%)	(7.30%)
Severe downside | Start to peak
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(3.00%)	1.80%
UK Bank Rate (in percent)	0.10%	0.75%
Unemployment rate (in percent)	11.50%	8.30%
House price growth (in percent)	5.30%	2.70%
Commercial real estate price growth (in percent)	(2.70%)	(0.80%)
Severe downside | Start to trough
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Multiple Economic Scenarios [Line Items]
Gross domestic product (in percent)	(21.20%)	(2.40%)
UK Bank Rate (in percent)	0.00%	0.01%
Unemployment rate (in percent)	4.00%	3.80%
House price growth (in percent)	(32.40%)	(30.30%)
Commercial real estate price growth (in percent)	(39.90%)	(31.40%)

CRITICAL ACCOUNTING JUDGEMENT_8

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of ECL Sensitivity to Economic Assumptions - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	£ 5,637	£ 3,189
Probability weighted
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	6,132	3,380
Difference
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	495	191
Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	5,068	2,950
Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	6,721	3,571
Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	9,033	4,663
UK mortgages | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	803	464
UK mortgages | Probability weighted
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	1,027	569
UK mortgages | Difference
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	224	105
UK mortgages | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	614	317
UK mortgages | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	1,237	653
UK mortgages | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,306	1,389
Other Retail | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,310	1,492
Other Retail | Probability weighted
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,368	1,521
Other Retail | Difference
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	58	29
Other Retail | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,181	1,443
Other Retail | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,487	1,564
Other Retail | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,745	1,712
Commercial Banking | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,102	1,206
Commercial Banking | Probability weighted
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,315	1,263
Commercial Banking | Difference
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	213	57
Commercial Banking | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	1,853	1,163
Commercial Banking | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	2,575	1,327
Commercial Banking | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	3,554	1,535
Other | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	422	27
Other | Probability weighted
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	422	27
Other | Difference
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	0	0
Other | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	420	27
Other | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	422	27
Other | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Key Economic Assumptions [Line Items]
Impact of economic scenario	£ 428	£ 27

CRITICAL ACCOUNTING JUDGEMENT_9

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Disclosure of Expected Credit Loss - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Increase (decrease) in UK unemployment rate (in percent)	1.00%
Allowance account for credit losses of financial assets	£ 6,132	£ 3,380
Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	5,018	2,927
Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	5,596	3,176
Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	6,829	3,602
Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	9,811	5,007
Individually assessed
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	1,215	812
1pp increase in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	203	141
1pp decrease in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	(188)	(143)
UK mortgages
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	1,027	569
UK mortgages | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	602	311
UK mortgages | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	797	461
UK mortgages | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	1,269	670
UK mortgages | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,578	1,667
UK mortgages | Individually assessed
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	0	0
UK mortgages | 1pp increase in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	25	33
UK mortgages | 1pp decrease in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	(23)	(34)
Other Retail
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	2,368	1,521
Other Retail | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,154	1,435
Other Retail | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,299	1,486
Other Retail | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,509	1,570
Other Retail | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,819	1,740
Other Retail | Individually assessed
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	0	0
Other Retail | 1pp increase in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	54	39
Other Retail | 1pp decrease in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	(54)	(54)
Commercial Banking
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	2,315	1,263
Commercial Banking | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	1,842	1,154
Commercial Banking | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,079	1,202
Commercial Banking | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	2,629	1,335
Commercial Banking | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	3,985	1,573
Commercial Banking | Individually assessed
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	1,215	812
Commercial Banking | Best case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	977	438
Commercial Banking | Worst case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	1,536	1,095
Commercial Banking | 1pp increase in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	123	68
Commercial Banking | 1pp decrease in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	(110)	(54)
Other
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	422	27
Other | Upside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	420	27
Other | Base case
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	421	27
Other | Downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	422	27
Other | Severe downside
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	429	27
Other | Individually assessed
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Allowance account for credit losses of financial assets	0	0
Other | 1pp increase in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	1	1
Other | 1pp decrease in unemployment
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	(1)	(1)
10pp increase in HPI
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	(206)	(110)
10pp decrease in HPI
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Schedule of Expected Credit Loss [Line Items]
Expected credit loss	£ 284	£ 147

CRITICAL ACCOUNTING JUDGEMEN_10

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) -Disclosure of Application of Judgement in Adjustments to Modelled ECL - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		£ 6,132	£ 3,380
UK mortgages
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		£ 1,027	569
UK mortgages | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets			183
Probability of possession (in percent)		95.00%
UK mortgages | Other judgements | Stage 2
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Loans to customers probability of default (in percent)		70.00%
UK mortgages | Other judgements | Stage 3
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Loans to customers probability of default (in percent)		100.00%
Other Retail
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		£ 2,368	1,521
Commercial Banking
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		2,315	1,263
Other
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		422	27
Modelled ECL
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		3,584	2,415
Modelled ECL | UK mortgages
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		481	386
Modelled ECL | Other Retail
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		2,060	1,531
Modelled ECL | Commercial Banking
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		1,021	471
Modelled ECL | Other
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		22	27
Individually assessed
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		1,215	812
Individually assessed | UK mortgages
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		0	0
Individually assessed | Other Retail
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		0	0
Individually assessed | Commercial Banking
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		1,215	812
Individually assessed | Other
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		0	0
Judgements due to COVID-19
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		838	0
Judgements due to COVID-19 | UK mortgages
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		36	0
Judgements due to COVID-19 | Other Retail
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		321	0
Judgements due to COVID-19 | Commercial Banking
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		81	0
Judgements due to COVID-19 | Other
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		400	0
Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		495	153
Other judgements | UK mortgages
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		510
Other judgements | Other Retail
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		(13)	(10)
Other judgements | Commercial Banking
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		(2)	(20)
Other judgements | Other
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Allowance account for credit losses of financial assets		0	0
Support measures | Other Retail | Judgements due to COVID-19
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		218
Forward looking LGDs | Other Retail | Judgements due to COVID-19
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		86
Other economic impacts
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		200
Other economic impacts | Commercial Banking | Judgements due to COVID-19
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		£ 91
Central overlay in respect of economic uncertainty | Other | Judgements due to COVID-19
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in unemployment rate (in percent)		1.00%
Decrease in House Price Index (in percent)	5.00%
Re-weighting from upside to severe downside scenario (in percent)		10.00%
Modelled forecast parameters | UK mortgages | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		£ 193	0
End of term risk on interest only mortgages | UK mortgages | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		179	132
Mortgage accounts in long term default | UK mortgages | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		87	33
Extension of modelled lifetime on retail revolving products | Other Retail | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		81	36
Unsecured non-scored accounts | Other Retail | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		(72)	0
Credit card LGD alignment | Other Retail | Other judgements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		(55)	(22)
Management adjustments
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in allowance account for credit losses of financial assets		£ 1,333	£ 153

CRITICAL ACCOUNTING JUDGEMEN_11

CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Brands
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Growth rate used to extrapolate cash flow projections (in percent)		2.50%
Capitalised software enhancements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Remaining amortisation period of intangible assets material to entity		4 years 10 months 24 days	4 years 8 months 12 days
Brands
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Effect of 1% decrease in discount rate utilized (in percent)		£ 50
UK corporation tax | Change in UK tax rate
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in deferred tax asset		420
1 Year decrease in estimated useful life | Capitalised software enhancements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Charge for the year	£ 175
The Group
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Net defined benefit asset		1,714	£ 681
Net defined benefit liability		£ 245	£ 257
Weighted average duration of defined benefit obligation		19 years	18 years
Deferred tax assets		£ 3,468	£ 3,366
Other provisions		1,722	3,138
Financial assets, at fair value		37,275	35,395
Financial liabilities, at fair value		15,059	17,533
Intangible assets		£ 4,112	3,781
Decrease in post-tax income projection (in percent)		1.00%
The Group | Accumulated amortisation
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		£ 6,149	5,551	£ 4,991
Charge for the year		653	562
The Group | Capitalised software enhancements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		3,281	2,880
The Group | Capitalised software enhancements | Accumulated amortisation
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		2,574	2,046	1,556
Charge for the year		583	492
The Group | Brands
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		£ 380	380
Discount rate used in current estimate of value in use (in percent)		9.31%
Growth rate used to extrapolate cash flow projections (in percent)		2.50%
The Group | Brands | Accumulated amortisation
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		£ 204	204	204
Charge for the year		0	0
The Group | Historical regulatory breaches
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Other provisions		520	2,269
The Group | Brands
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Effect of 1% decrease in discount rate utilized (in percent)		50
The Group | UK corporation tax
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in deferred tax asset		16
The Group | Prior to offsetting of balances within same taxing jurisdiction
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Deferred tax assets		5,327	4,731	4,774
The Group | Prior to offsetting of balances within same taxing jurisdiction | Tax losses
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Deferred tax assets		4,054	3,600	3,783
The Group | Actuarial assumption of discount rates | Decrease of 0.1 per cent
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Decrease in defined benefit obligation due to reasonably possible decrease in actuarial assumption		890	784
The Group | Actuarial assumption of expected life expectancy of members | Increase of one year
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Decrease in defined benefit obligation due to reasonably possible increase in actuarial assumption		2,146	1,636
The Group | Defined benefit pension schemes
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Net defined benefit liability (asset)		1,578	550
Net defined benefit asset		1,714	681
Net defined benefit liability		136	131
The Bank
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Net defined benefit asset		765	386
Net defined benefit liability		£ 106	£ 124
Weighted average duration of defined benefit obligation		17 years	16 years
Deferred tax assets		£ 2,109	£ 2,029
Other provisions		968	1,436
Financial assets, at fair value		38,966	36,501
Financial liabilities, at fair value		18,979	21,908
The Bank | Capitalised software enhancements
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		2,960	2,618
The Bank | Capitalised software enhancements | Accumulated amortisation
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Intangible assets		2,171	1,662	1,244
Charge for the year		515	420
The Bank | Historical regulatory breaches
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Other provisions		140	783
The Bank | UK corporation tax
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Increase in deferred tax asset		3
The Bank | Prior to offsetting of balances within same taxing jurisdiction
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Deferred tax assets		3,042	2,734	2,763
The Bank | Prior to offsetting of balances within same taxing jurisdiction | Tax losses
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Deferred tax assets		2,507	2,198	£ 2,284
The Bank | Actuarial assumption of discount rates | Decrease of 0.1 per cent
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Decrease in defined benefit obligation due to reasonably possible decrease in actuarial assumption		548	484
The Bank | Actuarial assumption of expected life expectancy of members | Increase of one year
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Decrease in defined benefit obligation due to reasonably possible increase in actuarial assumption		1,370	1,038
The Bank | Defined benefit pension schemes
CRITICAL ACCOUNTING JUDGEMENTS AND ESTIMATES (Details) - Narrative [Line Items]
Net defined benefit liability (asset)		727	347
Net defined benefit asset		765	386
Net defined benefit liability		£ 38	£ 39

SEGMENTAL ANALYSIS (Details) -

SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments £ in Millions	12 Months Ended
	Dec. 31, 2020GBP (£)Segment	Dec. 31, 2019GBP (£)	Dec. 31, 2018GBP (£)
SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments [Line Items]
Number of reporting segments | Segment	2
The Group
SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments [Line Items]
Net interest income	£ 10,770	£ 12,220	£ 12,754
Other income	3,815	4,388	4,220
Total income	14,585	16,608	16,974
Costs	(9,196)	(11,123)	(11,768)
Profit before tax	1,329	4,123	5,660	[1]
Segment external assets	599,939	581,368
Segment external liabilities	558,821	542,469
Analysis of segment other income:
Segment other income	1,924	2,363	2,497
Fees and commissions payable	(909)	(1,027)	(1,228)
Net fee and commission income	1,015	1,336	1,269
Other income	3,815	4,388	4,220
Other segment items reflected in income statement above:
Depreciation and amortisation	2,670	2,602	2,374
Defined benefit scheme charges	244	241
Underlying basis | The Group
SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments [Line Items]
Net interest income	10,770	12,220	12,754
Other income	3,815	4,388	4,220
Total income	14,585	16,608	16,974
Costs	(9,196)	(11,123)	(11,768)
Impairment charge	(4,060)	(1,362)	(926)
Profit before tax	1,329	4,123	4,280
External income	14,585	16,608	16,974
Inter-segment income	0	0	0
Segment income	14,585	16,608	16,974
Segment external assets	599,939	581,368	593,524
Segment external liabilities	558,821	542,469	553,774
Analysis of segment other income:
Segment other income	1,924	2,363	2,497
Fees and commissions payable	(909)	(1,027)	(1,228)
Net fee and commission income	1,015	1,336	1,269
Operating lease rental income	1,120	1,247	1,341
Gains less losses on disposal of financial assets at fair value through other comprehensive income	145	196	268
Other income	1,535	1,609	1,342
Other income	3,815	4,388	4,220
Other segment items reflected in income statement above:
Depreciation and amortisation	2,670	2,602	2,349
Defined benefit scheme charges	247	245	400
Other segment items:
Additions to fixed assets	2,815	3,552	3,378
Investments in joint ventures and associates at end of year	4	3	5
Underlying basis | The Group | Current accounts
Analysis of segment other income:
Segment other income	610	656	647
Underlying basis | The Group | Credit and debit card fees
Analysis of segment other income:
Segment other income	748	961	974
Underlying basis | The Group | Commercial banking fees
Analysis of segment other income:
Segment other income	169	166	271
Underlying basis | The Group | Private banking and asset management
Analysis of segment other income:
Segment other income	1	38	94
Underlying basis | The Group | Factoring
Analysis of segment other income:
Segment other income	76	103	83
Underlying basis | The Group | Other fees and commissions
Analysis of segment other income:
Segment other income	320	439	428
Retail | Underlying basis
SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments [Line Items]
Net interest income	8,321	9,129	9,379
Other income	1,735	2,025	1,922
Total income	10,056	11,154	11,301
Costs	(5,816)	(7,912)	(7,709)
Impairment charge	(2,384)	(1,038)	(861)
Profit before tax	1,856	2,204	2,731
External income	11,859	13,111	12,924
Inter-segment income	(1,803)	(1,957)	(1,623)
Segment income	10,056	11,154	11,301
Segment external assets	359,171	351,301	349,755
Segment external liabilities	295,216	261,019	261,457
Analysis of segment other income:
Segment other income	1,077	1,220	1,206
Fees and commissions payable	(571)	(571)	(757)
Net fee and commission income	506	649	449
Operating lease rental income	1,104	1,225	1,305
Gains less losses on disposal of financial assets at fair value through other comprehensive income	0	0	0
Other income	125	151	168
Other income	1,735	2,025	1,922
Other segment items reflected in income statement above:
Depreciation and amortisation	1,760	1,712	1,573
Defined benefit scheme charges	97	108	121
Other segment items:
Additions to fixed assets	1,684	2,208	2,092
Investments in joint ventures and associates at end of year	4	3	4
Retail | Underlying basis | Current accounts
Analysis of segment other income:
Segment other income	497	518	503
Retail | Underlying basis | Credit and debit card fees
Analysis of segment other income:
Segment other income	517	634	646
Retail | Underlying basis | Commercial banking fees
Analysis of segment other income:
Segment other income	0	0	0
Retail | Underlying basis | Private banking and asset management
Analysis of segment other income:
Segment other income	0	0	0
Retail | Underlying basis | Factoring
Analysis of segment other income:
Segment other income	0	0	0
Retail | Underlying basis | Other fees and commissions
Analysis of segment other income:
Segment other income	63	68	57
Commercial | Underlying basis
SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments [Line Items]
Net interest income	2,300	2,691	2,893
Other income	673	870	1,447
Total income	2,973	3,561	4,340
Costs	(1,673)	(1,818)	(2,160)
Impairment charge	(1,280)	(313)	(80)
Profit before tax	20	1,430	2,100
External income	2,496	2,773	3,722
Inter-segment income	477	788	618
Segment income	2,973	3,561	4,340
Segment external assets	83,155	89,630	115,444
Segment external liabilities	126,008	125,240	137,172
Analysis of segment other income:
Segment other income	742	948	1,071
Fees and commissions payable	(195)	(299)	(310)
Net fee and commission income	547	649	761
Operating lease rental income	16	22	36
Gains less losses on disposal of financial assets at fair value through other comprehensive income	0	(5)	0
Other income	110	204	650
Other income	673	870	1,447
Other segment items reflected in income statement above:
Depreciation and amortisation	242	315	278
Defined benefit scheme charges	28	43	48
Other segment items:
Additions to fixed assets	89	247	208
Investments in joint ventures and associates at end of year	0	0	0
Commercial | Underlying basis | Current accounts
Analysis of segment other income:
Segment other income	109	133	139
Commercial | Underlying basis | Credit and debit card fees
Analysis of segment other income:
Segment other income	231	327	328
Commercial | Underlying basis | Commercial banking fees
Analysis of segment other income:
Segment other income	169	166	271
Commercial | Underlying basis | Private banking and asset management
Analysis of segment other income:
Segment other income	0	0	2
Commercial | Underlying basis | Factoring
Analysis of segment other income:
Segment other income	76	103	83
Commercial | Underlying basis | Other fees and commissions
Analysis of segment other income:
Segment other income	157	219	248
Other | Underlying basis
SEGMENTAL ANALYSIS (Details) - Schedule of Operating Segments [Line Items]
Net interest income	149	400	482
Other income	1,407	1,493	851
Total income	1,556	1,893	1,333
Costs	(1,707)	(1,393)	(1,899)
Impairment charge	(396)	(11)	15
Profit before tax	(547)	489	(551)
External income	230	724	328
Inter-segment income	1,326	1,169	1,005
Segment income	1,556	1,893	1,333
Segment external assets	157,613	140,437	128,325
Segment external liabilities	137,597	156,210	155,145
Analysis of segment other income:
Segment other income	105	195	220
Fees and commissions payable	(143)	(157)	(161)
Net fee and commission income	(38)	38	59
Operating lease rental income	0	0	0
Gains less losses on disposal of financial assets at fair value through other comprehensive income	145	201	268
Other income	1,300	1,254	524
Other income	1,407	1,493	851
Other segment items reflected in income statement above:
Depreciation and amortisation	668	575	498
Defined benefit scheme charges	122	94	231
Other segment items:
Additions to fixed assets	1,042	1,097	1,078
Investments in joint ventures and associates at end of year	0	0	1
Other | Underlying basis | Current accounts
Analysis of segment other income:
Segment other income	4	5	5
Other | Underlying basis | Credit and debit card fees
Analysis of segment other income:
Segment other income	0	0	0
Other | Underlying basis | Commercial banking fees
Analysis of segment other income:
Segment other income	0	0	0
Other | Underlying basis | Private banking and asset management
Analysis of segment other income:
Segment other income	1	38	92
Other | Underlying basis | Factoring
Analysis of segment other income:
Segment other income	0	0	0
Other | Underlying basis | Other fees and commissions
Analysis of segment other income:
Segment other income	£ 100	£ 152	£ 123
[1]	The Group profit before tax in 2018 comprised £4,280 million in respect of continuing operations and £1,380 million in respect of discontinued operations.

NET INTEREST INCOME (Details) -

NET INTEREST INCOME (Details) - Schedule of Net Interest Income - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET INTEREST INCOME (Details) - Schedule of Net Interest Income [Line Items]
Borrowings, interest rate (in percent)	2.42%	2.25%	2.74%
Negative interest rates
NET INTEREST INCOME (Details) - Schedule of Net Interest Income [Line Items]
Total interest and similar income	£ 10	£ 26	£ 31
Total interest and similar expense	(23)	(119)	(10)
Finance leases
NET INTEREST INCOME (Details) - Schedule of Net Interest Income [Line Items]
Total interest and similar income	42	39	45
The Group
NET INTEREST INCOME (Details) - Schedule of Net Interest Income [Line Items]
Total interest and similar income	£ 13,866	£ 16,098	£ 16,216
Deposits from banks, excluding liabilities under sale and repurchase agreements (in percent)	1.19%	1.39%	1.36%
Customer deposits, excluding liabilities under sale and repurchase agreements (in percent)	0.40%	0.65%	0.60%
Debt securities in issue (in percent)	1.13%	0.71%	0.10%
Subordinated liabilities (in percent)	7.19%	9.89%	10.18%
Lease liabilities (in percent)	2.36%	2.41%	2.44%
Liabilities under sale and repurchase agreements (in percent)	0.36%	1.08%	0.87%
Total interest and similar expense (in percent)	0.71%	0.91%	0.78%
Deposits from banks, excluding liabilities under sale and repurchase transactions	£ (82)	£ (87)	£ (81)
Customer deposits, excluding liabilities under sale and repurchase transactions	(1,270)	(2,054)	(1,997)
Debt securities in issue	(761)	(476)	(66)
Subordinated liabilities	(827)	(921)	(1,072)
Lease liabilities	(39)	(39)	(1)
Liabilities under sale and repurchase agreements	(117)	(301)	(245)
Total interest and similar expense	(3,096)	(3,878)	(3,462)
Net interest income	£ 10,770	£ 12,220	£ 12,754
Interest and similar income | The Group
NET INTEREST INCOME (Details) - Schedule of Net Interest Income [Line Items]
Loans and advances to customers (in percent)	2.76%	3.21%	3.23%
Loans and advances to banks (in percent)	0.20%	0.57%	0.76%
Debt securities held at amortised cost (in percent)	1.82%	2.26%	1.61%
Interest receivable on financial assets held at amortised cost (in percent)	2.48%	2.97%	2.93%
Financial assets at fair value through other comprehensive income (in percent)	1.12%	1.64%	1.98%
Total interest and similar income (in percent)	2.42%	2.90%	2.88%
Loans and advances to customers	£ 13,358	£ 15,281	£ 15,049
Loans and advances to banks	114	269	462
Debt securities	92	118	66
Interest income on financial assets held at amortised cost	13,564	15,668	15,577
Financial assets at fair value through other comprehensive income	302	430	639
Total interest and similar income	£ 13,866	£ 16,098	£ 16,216

NET INTEREST INCOME (Details)_2

NET INTEREST INCOME (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET INTEREST INCOME (Details) - Narrative [Line Items]
Interest income on impaired financial assets accrued	£ 170	£ 196	£ 222
The Group
NET INTEREST INCOME (Details) - Narrative [Line Items]
Reclassification adjustments on cash flow hedges, before tax	£ 727	£ 580	£ 691

NET FEE AND COMMISSION INCOME_2

NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	£ 1,924	£ 2,363	£ 2,497
Fee and commission expense	(909)	(1,027)	(1,228)
Net fee and commission income	1,015	1,336	1,269
Current accounts
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	610	656	647
Credit and debit card fees
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	748	961	974
Commercial banking fees
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	169	166	271
Private banking and asset management
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	1	38	94
Factoring
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	76	103	83
Other fees and commissions
NET FEE AND COMMISSION INCOME (Details) - Schedule of Fee and Commission Income [Line Items]
Fee and commission income	£ 320	£ 439	£ 428

NET FEE AND COMMISSION INCOME_3

NET FEE AND COMMISSION INCOME (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
NET FEE AND COMMISSION INCOME (Details) - Narrative [Line Items]
Receivables from contracts with customers	£ 76	£ 105
Transaction price allocated to remaining performance obligations	172	250
Current contract liabilities	18	54
Revenue from performance obligations satisfied or partially satisfied in previous periods	0	9
Services provided after balance sheet date
NET FEE AND COMMISSION INCOME (Details) - Narrative [Line Items]
Receivables from contracts with customers	£ 83	£ 120

NET TRADING INCOME (Details) -

NET TRADING INCOME (Details) - Schedule of Net Trading Income - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET TRADING INCOME (Details) - Schedule of Net Trading Income [Line Items]
Foreign exchange translation gains (losses)	£ 74	£ (203)	£ 132
Gains on foreign exchange trading transactions	326	336	235
Total foreign exchange	400	133	367
Investment property losses (note 21)	(20)	(8)	0
Securities and other gains (see below)	370	235	41
Net trading income	£ 750	£ 360	£ 408

NET TRADING INCOME (Details) _2

NET TRADING INCOME (Details) - Schedule of Net Gains (Losses) Held For Trading - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income arising on assets and liabilities mandatorily held at fair value through profit or loss:
Financial instruments held for trading	£ 440	£ 427	£ 127
Other financial instruments mandatorily held at fair value through profit or loss:
Debt securities, loans and advances	37	25	11
Equity shares	9	(3)	86
Total net gains arising on assets designated at fair value through profit or loss	486	449	224
Net expense arising on assets and liabilities designated at fair value through profit or loss	(116)	(214)	(183)
Securities and other gains	£ 370	£ 235	£ 41

OTHER OPERATING INCOME (Details

OTHER OPERATING INCOME (Details) - Schedule of Other Operating Income - Operating income (loss) - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
OTHER OPERATING INCOME (Details) - Schedule of Other Operating Income [Line Items]
Operating lease rental income	£ 1,120	£ 1,247	£ 1,341
Gains less losses on disposal of financial assets at fair value through other comprehensive income (note 34)	145	196	268
Liability management	(216)	(101)	0
Share of results of joint ventures and associates	0	0	5
Intercompany recharges and other	1,001	1,350	929
Total other operating income	£ 2,050	£ 2,692	£ 2,543

OPERATING EXPENSES (Details) -

OPERATING EXPENSES (Details) - Schedule of Operating Expenses - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation and amortisation:
Goodwill impairment (note 19)	£ 4
Regulatory provisions:
Gain on disposal of leased assets	127	£ 41	£ 60
Operating expense
Staff costs:
Salaries	2,382	2,370	2,379
Performance-based compensation	106	340	485
Social security costs	271	308	330
Pensions and other post-retirement benefit schemes (note 28)	552	518	688
Restructuring costs	161	89	247
Other staff costs	143	360	444
Employee benefits expense	3,615	3,985	4,573
Premises and equipment:
Rent and rates	115	114	364
Repairs and maintenance	172	182	189
Other	138	150	126
Premises and equipment cost	425	446	679
Other expenses:
Communications and data processing	996	1,022	1,116
Advertising and promotion	184	173	192
Professional fees	128	144	230
Other	760	561	673
Other expenses, by nature	2,068	1,900	2,211
Depreciation and amortisation:
Depreciation of property, plant and equipment (note 21)	2,017	2,040	1,849
Amortisation of other intangible assets (note 20)	653	562	500
Depreciation and amortisation expense	2,670	2,602	2,349
Goodwill impairment (note 19)	4	0	0
Total operating expenses, excluding regulatory provisions	8,782	8,933	9,812
Regulatory provisions:
Payment protection insurance provision/ Other regulatory provisions	414	2,190	1,956
Total operating expenses	9,196	11,123	11,768
Operating expense | Payment protection insurance
Regulatory provisions:
Payment protection insurance provision/ Other regulatory provisions	85	1,795	1,395
Operating expense | Other regulatory provisions
Regulatory provisions:
Payment protection insurance provision/ Other regulatory provisions	£ 329	£ 395	£ 561

OPERATING EXPENSES (Details) _2

OPERATING EXPENSES (Details) - Schedule of Average Number of Persons Employed by the Group	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
OPERATING EXPENSES (Details) - Schedule of Average Number of Persons Employed by the Group [Line Items]
Number of employees	67,630	70,083	71,786
UK
OPERATING EXPENSES (Details) - Schedule of Average Number of Persons Employed by the Group [Line Items]
Number of employees	67,115	69,321	71,017
Overseas
OPERATING EXPENSES (Details) - Schedule of Average Number of Persons Employed by the Group [Line Items]
Number of employees	515	762	769

AUDITORS' REMUNERATION (Details

AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank [Line Items]
Total fees payable to the Bank’s auditors	£ 16.2	£ 14.6	£ 15.6
Fees payable for the audit of the Bank’s current year annual report
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank [Line Items]
Audit fees	4.5	4.2	3.8
Audit of the Bank’s subsidiaries pursuant to legislation
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank [Line Items]
Audit fees	8.9	8.6	10.2
Other services supplied pursuant to legislation
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank [Line Items]
Audit fees	1.6	1.3	1.5
Other services – audit-related fees
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank [Line Items]
Other services – audit-related fees	0.3	0.2	0
All other services
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by the Bank [Line Items]
All other services	£ 0.9	£ 0.3	£ 0.1

AUDITORS' REMUNERATION (Detai_2

AUDITORS' REMUNERATION (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AUDITORS' REMUNERATION (Details) - Narartive [Line Items]
Total fees payable to the Bank’s auditors	£ 16.2	£ 14.6	£ 15.6
Statutory audit of group entities
AUDITORS' REMUNERATION (Details) - Narartive [Line Items]
Total fees payable to the Bank’s auditors	13.4	12.8	14
All other services	£ 2.8	£ 1.8	£ 1.6

AUDITORS' REMUNERATION (Detai_3

AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by Outside Entities - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by Outside Entities [Line Items]
Auditors' remuneration	£ 16.2	£ 14.6	£ 15.6
Audits of Group pension schemes
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by Outside Entities [Line Items]
Auditors' remuneration	0.1	0.1	0.1
Audits of the unconsolidated Open Ended Investment Companies managed by the Group
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by Outside Entities [Line Items]
Auditors' remuneration	0	0	0.1
Reviews of the financial position of corporate and other borrowers
AUDITORS' REMUNERATION (Details) - Schedule of Fees Payable to Auditors by Outside Entities [Line Items]
Auditors' remuneration	£ 1.3	£ 0	£ 0.4

IMPAIRMENT (Details) - Schedule

IMPAIRMENT (Details) - Schedule of Impairment - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
IMPAIRMENT (Details) - Schedule of Impairment [Line Items]
Impact of transfers between stages	£ 1,456	£ 604	£ 453
Other changes in credit quality	2,246	841	577
Additions (repayments)	168	(95)	(107)
Methodology and model changes	165	14	(20)
Other items	25	(2)	23
Other items impacting the impairment charge	2,604	758	473
Total impairment	4,060	1,362	926
In respect of:
Financial assets at amortised cost	3,802	1,380	1,012
Other assets	0	0
Impairment charge on drawn balances	3,802	1,380	1,012
Loan commitments and financial guarantees	253	(17)	(72)
Financial assets at fair value through other comprehensive income	5	(1)	(14)
Residual value and voluntary impairment charges	41	134	29
Loans and advances to banks
In respect of:
Loans and advances	4	0	1
Loans and advances to customers
In respect of:
Loans and advances	3,798	1,340	1,011
Due from fellow Lloyds Banking Group undertakings
In respect of:
Loans and advances	0	40
Stage 1
IMPAIRMENT (Details) - Schedule of Impairment [Line Items]
Impact of transfers between stages	(168)	(17)	(10)
Other changes in credit quality	909	6	(23)
Additions (repayments)	77	93	19
Methodology and model changes	(31)	33	(71)
Other items	0	(5)	(13)
Other items impacting the impairment charge	955	127	(88)
Total impairment	787	110	(98)
In respect of:
Financial assets at amortised cost	682	140	(64)
Other assets	0	0
Impairment charge on drawn balances	682	140	(64)
Loan commitments and financial guarantees	100	(29)	(20)
Financial assets at fair value through other comprehensive income	5	(1)	(14)
Stage 1 | Loans and advances to banks
In respect of:
Loans and advances	4	0	1
Stage 1 | Loans and advances to customers
In respect of:
Loans and advances	678	141	(65)
Stage 1 | Due from fellow Lloyds Banking Group undertakings
In respect of:
Loans and advances	0	(1)
Stage 2
IMPAIRMENT (Details) - Schedule of Impairment [Line Items]
Impact of transfers between stages	925	89	18
Other changes in credit quality	6	2	(14)
Additions (repayments)	173	(41)	(84)
Methodology and model changes	170	(27)	(21)
Other items	0	0	0
Other items impacting the impairment charge	349	(66)	(119)
Total impairment	1,274	23	(101)
In respect of:
Financial assets at amortised cost	1,130	10	(53)
Other assets	0	0
Impairment charge on drawn balances	1,130	10	(53)
Loan commitments and financial guarantees	144	13	(48)
Financial assets at fair value through other comprehensive income	0	0	0
Stage 2 | Loans and advances to banks
In respect of:
Loans and advances	0	0	0
Stage 2 | Loans and advances to customers
In respect of:
Loans and advances	1,130	10	(53)
Stage 2 | Due from fellow Lloyds Banking Group undertakings
In respect of:
Loans and advances	0	0
Stage 3
IMPAIRMENT (Details) - Schedule of Impairment [Line Items]
Impact of transfers between stages	699	532	445
Other changes in credit quality	1,164	939	545
Additions (repayments)	(52)	(60)	27
Methodology and model changes	26	8	72
Other items	25	3	36
Other items impacting the impairment charge	1,163	890	680
Total impairment	1,862	1,422	1,125
In respect of:
Financial assets at amortised cost	1,853	1,423	1,129
Other assets	0	0
Impairment charge on drawn balances	1,853	1,423	1,129
Loan commitments and financial guarantees	9	(1)	(4)
Financial assets at fair value through other comprehensive income	0	0	0
Stage 3 | Loans and advances to banks
In respect of:
Loans and advances	0	0	0
Stage 3 | Loans and advances to customers
In respect of:
Loans and advances	1,853	1,382	1,129
Stage 3 | Due from fellow Lloyds Banking Group undertakings
In respect of:
Loans and advances	0	41
POCI
IMPAIRMENT (Details) - Schedule of Impairment [Line Items]
Impact of transfers between stages	0	0	0
Other changes in credit quality	167	(106)	69
Additions (repayments)	(30)	(87)	(69)
Methodology and model changes	0	0	0
Other items	0	0	0
Other items impacting the impairment charge	137	(193)	0
Total impairment	137	(193)	0
In respect of:
Financial assets at amortised cost	137	(193)	0
Other assets	0	0
Impairment charge on drawn balances	137	(193)	0
Loan commitments and financial guarantees	0	0	0
Financial assets at fair value through other comprehensive income	0	0	0
POCI | Loans and advances to banks
In respect of:
Loans and advances	0	0	0
POCI | Loans and advances to customers
In respect of:
Loans and advances	137	(193)	£ 0
POCI | Due from fellow Lloyds Banking Group undertakings
In respect of:
Loans and advances	£ 0	£ 0

TAX EXPENSE (Details) - Schedul

TAX EXPENSE (Details) - Schedule of Tax Charges - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
TAX EXPENSE (Details) - Schedule of Tax Charges [Line Items]
Current tax expense	£ (81)	£ (1,235)	£ (1,142)
Deferred tax credit (expense)	218	(52)	(235)
Tax credit (expense)	137	(1,287)	(1,377)
UK corporation tax
TAX EXPENSE (Details) - Schedule of Tax Charges [Line Items]
Current tax on profit for the year	(423)	(1,279)	(1,108)
Adjustments in respect of prior years	336	98	(10)
Current tax expense	(87)	(1,181)	(1,118)
Foreign tax:
TAX EXPENSE (Details) - Schedule of Tax Charges [Line Items]
Current tax on profit for the year	(18)	(58)	(24)
Adjustments in respect of prior years	24	4	0
Current tax expense	6	(54)	(24)
Deferred tax:
TAX EXPENSE (Details) - Schedule of Tax Charges [Line Items]
Adjustments in respect of prior years	(290)	58	(1)
Current year	£ 508	£ (110)	£ (234)

TAX EXPENSE (Details) - Narrati

TAX EXPENSE (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
TAX EXPENSE (Details) - Narrative [Line Items]
Adjustments for current tax of prior periods	£ 70	£ 160	£ (11)
UK corporation tax
TAX EXPENSE (Details) - Narrative [Line Items]
Applicable tax rate (in percent)	19.00%	19.00%	19.00%
UK corporation tax | Capitalised software enhancements | The Group
TAX EXPENSE (Details) - Narrative [Line Items]
Adjustments for current tax of prior periods	£ 215	£ 0
Adjustments for deferred tax of prior periods	261
Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce deferred tax expense	£ 46

TAX EXPENSE (Details) - Sched_2

TAX EXPENSE (Details) - Schedule of Reconciliation of the Charge Resulting from Applying the Standard UK Corporation Tax Rate - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
TAX EXPENSE (Details) - Schedule of Reconciliation of the Charge Resulting from Applying the Standard UK Corporation Tax Rate [Line Items]
Profit before tax from continuing operations	£ 1,329	£ 4,123	£ 4,280
UK corporation tax thereon	(253)	(783)	(813)
Impact of surcharge on banking profits	(122)	(377)	(388)
Non-deductible costs: conduct charges	(24)	(283)	(189)
Non-deductible costs: bank levy	(30)	0	0
Other non-deductible costs	(62)	(77)	(74)
Non-taxable income	37	36	25
Tax relief on coupons on other equity instruments	79	53	52
Tax-exempt gains on disposals	0	25	11
Tax losses where no deferred tax recognised	(3)	(7)	(9)
Remeasurement of deferred tax due to rate changes	435	(25)	18
Differences in overseas tax rates	10	(9)	1
Adjustments in respect of prior years	70	160	(11)
Tax credit (expense) on profit from continuing operations	£ 137	£ (1,287)	£ (1,377)

DISCONTINUED OPERATIONS (Detail

DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Operations - Discontinued operations £ in Millions	12 Months Ended
	Dec. 31, 2018GBP (£)
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Operations [Line Items]
Interest income	£ 14
Interest expense	(3)
Net interest income	11
Fee and commission income	106
Fee and commission expense	(180)
Net fee and commission income	(74)
Net trading income	(790)
Insurance premium income (see (b) below)	2,714
Other operating income	205
Other income	2,055
Total income	2,066
Insurance claims (see (c) below)	(1,363)
Total income, net of insurance claims	703
Operating expenses	(333)
Profit on disposal of the discontinued operations	1,010
Profit before tax	1,380
Taxation	(66)
Profit after tax – discontinued operations	£ 1,314

DISCONTINUED OPERATIONS (Deta_2

DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Net Trading Income - Discontinued operations £ in Millions	12 Months Ended
	Dec. 31, 2018GBP (£)
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Net Trading Income [Line Items]
Foreign exchange translation gains	£ 31
Gains on foreign exchange trading transactions	0
Total foreign exchange	31
Investment property gains	45
Securities and other gains (see below)	866
Net trading income	£ (790)

DISCONTINUED OPERATIONS (Deta_3

DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Securities and Other Gains Held For Trading - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income arising on assets designated at fair value through profit or loss:
Debt securities, loans and advances	£ (37)	£ (25)	£ (11)
Equity shares	(9)	3	(86)
Total net gains arising on assets designated at fair value through profit or loss	486	449	224
Securities and other gains	£ 116	£ 214	183
Discontinued operations
Net income arising on assets designated at fair value through profit or loss:
Debt securities, loans and advances			(426)
Equity shares			(535)
Total net gains arising on assets designated at fair value through profit or loss			961
Net gains on financial instruments held for trading			(95)
Securities and other gains			£ (866)

DISCONTINUED OPERATIONS (Deta_4

DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income - Discontinued operations £ in Millions	12 Months Ended
	Dec. 31, 2018GBP (£)
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income [Line Items]
Net earned premiums	£ 2,714
Life insurance
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income [Line Items]
Gross premiums	2,564
Net earned premiums	2,491
Life insurance | Life and pensions
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income [Line Items]
Gross premiums	2,198
Life insurance | Annuities
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income [Line Items]
Gross premiums	366
Life insurance | Ceded reinsurance premiums
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income [Line Items]
Gross premiums	73
Non-life insurance
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Premium Income [Line Items]
Net earned premiums	£ 223

DISCONTINUED OPERATIONS (Deta_5

DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims - Discontinued operations £ in Millions	12 Months Ended
	Dec. 31, 2018GBP (£)
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	£ (2,788)
Insurance claims	(1,363)
Life insurance and participating investment contracts
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	(2,788)
Change in insurance and participating investment contracts	1,533
Change in non-participating investment contracts	(73)
Adjustments for increase (decrease) in insurance, reinsurance and investment contract liabilities	(1,328)
Reinsurers’ share	86
Receipts from premiums and claims, annuities and other policy benefits	(1,242)
Change in unallocated surplus	14
Life insurance and participating investment contracts | Deaths
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	(267)
Life insurance and participating investment contracts | Maturities
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	(393)
Life insurance and participating investment contracts | Surrenders
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	(1,734)
Life insurance and participating investment contracts | Annuities
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	(336)
Life insurance and participating investment contracts | Other
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Claims and surrenders	(58)
Total life insurance and participating investment contracts
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Insurance claims	(1,228)
Non-life insurance
DISCONTINUED OPERATIONS (Details) - Schedule of Discontinued Insurance Claims [Line Items]
Insurance claims	£ (135)

DISCONTINUED OPERATIONS (Deta_6

DISCONTINUED OPERATIONS (Details) - Schedule of Impact of Discontinued Operations on the Cash Flow Statement - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
DISCONTINUED OPERATIONS (Details) - Schedule of Impact of Discontinued Operations on the Cash Flow Statement [Line Items]
Net cash used in operating activities	£ 15,182	£ 11,634	£ (23,948)
Net cash from investing activities	(4,066)	(2,448)	20,944
Net cash used in financing activities	(765)	(10,292)	(18,258)
Change in cash and cash equivalents	£ 48,966	£ 38,614	39,723	£ 60,982
Discontinued operations
DISCONTINUED OPERATIONS (Details) - Schedule of Impact of Discontinued Operations on the Cash Flow Statement [Line Items]
Net cash used in operating activities			(1,715)
Net cash from investing activities			60
Net cash used in financing activities			(682)
Change in cash and cash equivalents			£ (2,337)

FINANCIAL ASSETS AT FAIR VALU_5

FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Financial Assets at Fair Value Through Profit or Loss - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Financial Assets at Fair Value Through Profit or Loss [Line Items]
Trading assets	£ 0	£ 290
Other financial assets mandatorily at fair value through profit or loss	1,674	1,994
Total	1,674	2,284
The Bank
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Financial Assets at Fair Value Through Profit or Loss [Line Items]
Trading assets	0	290
Other financial assets mandatorily at fair value through profit or loss	1,724	413
Total	£ 1,724	£ 703

FINANCIAL ASSETS AT FAIR VALU_6

FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss [Line Items]
Loans and advances to customers	£ 480,141	£ 474,470
Debt securities:
Debt securities	5,137	5,325
The Bank
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss [Line Items]
Loans and advances to customers	178,269	177,569
Debt securities:
Debt securities	4,315	5,241
Trading assets | The Group | Financial assets at fair value through profit or loss
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss [Line Items]
Loans and advances to customers	0	0
Debt securities:
Government securities	0	290
Corporate and other debt securities	0	0
Debt securities	0	290
Equity shares	0	0
Total	0	290
Trading assets | The Bank | Financial assets at fair value through profit or loss
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss [Line Items]
Loans and advances to customers	0	0
Debt securities:
Government securities	0	290
Corporate and other debt securities	0	0
Debt securities	0	290
Equity shares	0	0
Total	0	290
Other financial assets mandatorily at fair value through profit or loss | The Group | Financial assets at fair value through profit or loss
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss [Line Items]
Loans and advances to customers	1,511	1,782
Debt securities:
Government securities	0	0
Corporate and other debt securities	0	47
Debt securities	0	47
Equity shares	163	165
Total	1,674	1,994
Other financial assets mandatorily at fair value through profit or loss | The Bank | Financial assets at fair value through profit or loss
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Assets at Fair Value Through Profit or Loss [Line Items]
Loans and advances to customers	517	362
Debt securities:
Government securities	0	0
Corporate and other debt securities	1,203	47
Debt securities	1,203	47
Equity shares	4	4
Total	£ 1,724	£ 413

FINANCIAL ASSETS AT FAIR VALU_7

FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) -Narrative [Line Items]
Financial assets at fair value through profit or loss	£ 1,674	£ 2,284
The Group | 1 year or over original maturity
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) -Narrative [Line Items]
Financial assets at fair value through profit or loss	1,099	1,943
The Bank
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) -Narrative [Line Items]
Financial assets at fair value through profit or loss	1,724	703
The Bank | 1 year or over original maturity
FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) -Narrative [Line Items]
Financial assets at fair value through profit or loss	£ 1,600	£ 665

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Derivative Instruments - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Derivatives Fair Value [Line Items]
Contract/ notional amount	£ 2,075,682	£ 2,623,228
Fair value assets	8,341	8,494
Fair value liabilities	8,228	9,831
The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	1,568,882	2,036,941
Fair value assets	7,667	7,377
Fair value liabilities	7,638	8,802
The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	506,800	586,287
Fair value assets	674	1,117
Fair value liabilities	590	1,029
The Bank
Derivatives Fair Value [Line Items]
Contract/ notional amount	2,194,203	2,805,976
Fair value assets	12,595	13,638
Fair value liabilities	11,072	14,211
The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	2,042,168	2,607,531
Fair value assets	12,353	13,431
Fair value liabilities	10,783	13,944
The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	152,035	198,445
Fair value assets	242	207
Fair value liabilities	289	267
Exchange rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	162,382	168,652
Fair value assets	1,674	1,465
Fair value liabilities	1,774	2,643
Exchange rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	182,745	193,603
Fair value assets	1,951	1,564
Fair value liabilities	2,043	2,880
Interest rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	1,401,088	1,860,405
Fair value assets	5,927	5,857
Fair value liabilities	5,486	5,765
Interest rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	1,854,013	2,408,942
Fair value assets	10,343	11,793
Fair value liabilities	8,641	10,867
Credit derivatives | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	5,362	7,546
Fair value assets	65	39
Fair value liabilities	120	99
Equity and other contracts | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	50	338
Fair value assets	1	16
Fair value liabilities	258	295
Fair value hedges | The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	185,994	160,976
Fair value assets	347	704
Fair value liabilities	255	229
Fair value hedges | The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	58,066	66,867
Fair value assets	228	161
Fair value liabilities	221	213
Cash flow hedges | The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	320,806	425,311
Fair value assets	327	413
Fair value liabilities	335	800
Cash flow hedges | The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	93,969	131,578
Fair value assets	14	46
Fair value liabilities	68	54
Spot, forwards and futures | Exchange rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	15,055	11,066
Fair value assets	360	272
Fair value liabilities	124	142
Spot, forwards and futures | Exchange rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	14,117	8,564
Fair value assets	268	154
Fair value liabilities	83	123
Currency swaps | Exchange rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	147,303	156,224
Fair value assets	1,314	1,184
Fair value liabilities	1,650	2,492
Currency swaps | Exchange rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	168,605	183,675
Fair value assets	1,683	1,401
Fair value liabilities	1,960	2,748
Currency swaps | Fair value hedges | The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	36	34
Fair value assets	11	8
Fair value liabilities	0	0
Currency swaps | Fair value hedges | The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	36	34
Fair value assets	11	8
Fair value liabilities	0	0
Currency swaps | Cash flow hedges | The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	4,030	7,593
Fair value assets	37	70
Fair value liabilities	73	64
Currency swaps | Cash flow hedges | The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	616	1,101
Fair value assets	3	37
Fair value liabilities	26	19
Options purchased | Exchange rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	12	681
Fair value assets	0	9
Fair value liabilities	0	0
Options purchased | Exchange rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	12	682
Fair value assets	0	9
Fair value liabilities	0	0
Options purchased | Interest rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	3,745	4,124
Fair value assets	55	77
Fair value liabilities	0	0
Options purchased | Interest rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	3,824	4,176
Fair value assets	56	78
Fair value liabilities	0	0
Options written | Exchange rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	12	681
Fair value assets	0	0
Fair value liabilities	0	9
Options written | Exchange rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	11	682
Fair value assets	0	0
Fair value liabilities	0	9
Options written | Interest rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	3,064	3,682
Fair value assets	0	0
Fair value liabilities	62	78
Options written | Interest rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	3,025	3,697
Fair value assets	0	0
Fair value liabilities	75	89
Interest rate swaps | Interest rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	1,312,974	1,822,407
Fair value assets	5,872	5,779
Fair value liabilities	5,421	5,685
Interest rate swaps | Interest rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	1,762,919	2,370,877
Fair value assets	10,287	11,714
Fair value liabilities	8,562	10,776
Interest rate swaps | Fair value hedges | The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	185,958	160,942
Fair value assets	336	696
Fair value liabilities	255	229
Interest rate swaps | Fair value hedges | The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	58,030	66,833
Fair value assets	217	153
Fair value liabilities	221	213
Interest rate swaps | Cash flow hedges | The Group | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	316,776	417,718
Fair value assets	290	343
Fair value liabilities	262	736
Interest rate swaps | Cash flow hedges | The Bank | Hedging
Derivatives Fair Value [Line Items]
Contract/ notional amount	93,353	130,477
Fair value assets	11	9
Fair value liabilities	42	35
Forward rate agreements | Interest rate contracts: | The Group | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	81,305	30,192
Fair value assets	0	1
Fair value liabilities	3	2
Forward rate agreements | Interest rate contracts: | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	84,245	30,192
Fair value assets	0	1
Fair value liabilities	4	2
Credit derivatives | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	5,407	4,618
Fair value assets	59	59
Fair value liabilities	99	182
Equity and other contracts | The Bank | Trading and other
Derivatives Fair Value [Line Items]
Contract/ notional amount	3	368
Fair value assets	0	15
Fair value liabilities	£ 0	£ 15

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 2,075,682	£ 2,623,228
The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	2,194,203	2,805,976
Currency swaps | Fair value hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	36	34
Currency swaps | Fair value hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 36	£ 34
Average fixed interest rate (in percent)	1.28%	1.28%
Currency swaps | Fair value hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 36	£ 34
Currency swaps | Fair value hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 0	£ 0
Average fixed interest rate (in percent)	0.00%	0.00%
Currency swaps | Fair value hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 36	£ 34
Average fixed interest rate (in percent)	1.28%	1.28%
Currency swaps | Cash flow hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 4,030	£ 7,593
Currency swaps | Cash flow hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	28	0
Currency swaps | Cash flow hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	102	364
Currency swaps | Cash flow hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	408	390
Currency swaps | Cash flow hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	941	1,766
Currency swaps | Cash flow hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	2,551	5,073
Currency swaps | Cash flow hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	616	1,101
Currency swaps | Cash flow hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	25	53
Currency swaps | Cash flow hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	130	210
Currency swaps | Cash flow hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	296	539
Currency swaps | Cash flow hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	165	299
Currency swaps | Cash flow hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	0	0
Interest rate swaps | Fair value hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	185,958	160,942
Interest rate swaps | Fair value hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 6,032	£ 331
Average fixed interest rate (in percent)	2.01%	2.58%
Interest rate swaps | Fair value hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 6,031	£ 9,305
Average fixed interest rate (in percent)	1.69%	1.74%
Interest rate swaps | Fair value hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 37,531	£ 37,948
Average fixed interest rate (in percent)	1.49%	1.22%
Interest rate swaps | Fair value hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 116,487	£ 91,535
Average fixed interest rate (in percent)	1.23%	1.78%
Interest rate swaps | Fair value hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 19,877	£ 21,823
Average fixed interest rate (in percent)	2.07%	2.72%
Interest rate swaps | Fair value hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 58,030	£ 66,833
Interest rate swaps | Fair value hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 2,421	£ 331
Average fixed interest rate (in percent)	1.94%	2.58%
Interest rate swaps | Fair value hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 489	£ 1,445
Average fixed interest rate (in percent)	1.67%	2.39%
Interest rate swaps | Fair value hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 3,386	£ 8,378
Average fixed interest rate (in percent)	2.13%	1.49%
Interest rate swaps | Fair value hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 31,239	£ 34,930
Average fixed interest rate (in percent)	1.82%	1.82%
Interest rate swaps | Fair value hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 20,495	£ 21,749
Average fixed interest rate (in percent)	1.89%	2.24%
Interest rate swaps | Cash flow hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 316,776	£ 417,718
Interest rate swaps | Cash flow hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 5,026	£ 9,395
Average fixed interest rate (in percent)	1.09%	1.06%
Interest rate swaps | Cash flow hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 11,449	£ 23,424
Average fixed interest rate (in percent)	1.05%	1.23%
Interest rate swaps | Cash flow hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 41,348	£ 57,950
Average fixed interest rate (in percent)	1.18%	1.29%
Interest rate swaps | Cash flow hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 164,893	£ 205,603
Average fixed interest rate (in percent)	1.57%	1.48%
Interest rate swaps | Cash flow hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 94,060	£ 121,346
Average fixed interest rate (in percent)	2.36%	2.43%
Interest rate swaps | Cash flow hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 93,353	£ 130,477
Interest rate swaps | Cash flow hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 844	£ 3,473
Average fixed interest rate (in percent)	1.40%	1.10%
Interest rate swaps | Cash flow hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 4,363	£ 6,771
Average fixed interest rate (in percent)	1.07%	1.58%
Interest rate swaps | Cash flow hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 9,375	£ 22,444
Average fixed interest rate (in percent)	1.00%	1.57%
Interest rate swaps | Cash flow hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 67,534	£ 66,892
Average fixed interest rate (in percent)	1.47%	1.41%
Interest rate swaps | Cash flow hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Notional	£ 11,237	£ 30,897
Average fixed interest rate (in percent)	2.33%	1.93%
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0138	0.0138
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Fair value hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0138	0.0138
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate		0
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate		0
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate		0.0121
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate		0.0110
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate		0
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0113	0.0115
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0111	0.0111
Average EUR/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0130	0
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0131	0.0133
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0130	0.0136
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0132	0.0130
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Group | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0132	0.0130
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | Up to 1 month
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0130	0.0137
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | 1-3 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0130	0.0138
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | 3-12 months
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0131	0.0136
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | 1-5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0.0134	0.0136
Average USD/GBP exchange rate | Currency swaps | Cash flow hedges | The Bank | Over 5 years
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amount, Timing and Uncertainty of Future Cash Flows [Line Items]
Average exchange rate	0	0

DERIVATIVE FINANCIAL INSTRUME_5

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	£ 2,075,682	£ 2,623,228
Derivative assets	8,341	8,494
Liabilities	8,228	9,831
The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	2,194,203	2,805,976
Derivative assets	12,595	13,638
Liabilities	11,072	14,211
Currency swaps | Fair value hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	36	34
Derivative assets	11	8
Liabilities	0	0
Changes in fair value used for calculating hedge ineffectiveness	1	2
Currency swaps | Fair value hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	36	34
Derivative assets	11	8
Liabilities	0	0
Changes in fair value used for calculating hedge ineffectiveness	1	2
Currency swaps | Cash flow hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	4,030	7,593
Derivative assets	37	70
Liabilities	73	64
Changes in fair value used for calculating hedge ineffectiveness	(64)	(141)
Currency swaps | Cash flow hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	616	1,101
Derivative assets	3	37
Liabilities	26	19
Changes in fair value used for calculating hedge ineffectiveness	4	(31)
Interest rate swaps | Fair value hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	185,958	160,942
Derivative assets	336	696
Liabilities	255	229
Changes in fair value used for calculating hedge ineffectiveness	(88)	351
Interest rate swaps | Fair value hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	58,030	66,833
Derivative assets	217	153
Liabilities	221	213
Changes in fair value used for calculating hedge ineffectiveness	(226)	118
Interest rate swaps | Cash flow hedges | The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	316,776	417,718
Derivative assets	290	343
Liabilities	262	736
Changes in fair value used for calculating hedge ineffectiveness	527	920
Interest rate swaps | Cash flow hedges | The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting on Swaps [Line Items]
Contract/ notional amount	93,353	130,477
Derivative assets	11	9
Liabilities	42	35
Changes in fair value used for calculating hedge ineffectiveness	£ 130	£ 777

DERIVATIVE FINANCIAL INSTRUME_6

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair value hedges | The Group | Interest rate | Fixed rate mortgages
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	£ 125,183	£ 83,818
Carrying amount of the hedged item, liabilities	0	0
Accumulated amount of fair value adjustment on the hedged item, assets	661	154
Accumulated amount of fair value adjustment on the hedged item, liabilities	0	0
Change in fair value of hedged item for ineffectiveness assessment	355	(73)
Fair value hedges | The Group | Interest rate | Fixed rate issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	0	0
Carrying amount of the hedged item, liabilities	37,323	47,689
Accumulated amount of fair value adjustment on the hedged item, assets	0	0
Accumulated amount of fair value adjustment on the hedged item, liabilities	1,357	1,590
Change in fair value of hedged item for ineffectiveness assessment	(179)	(326)
Fair value hedges | The Group | Interest rate | Fixed rate borrowings
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	0	0
Carrying amount of the hedged item, liabilities	1,404	1,272
Accumulated amount of fair value adjustment on the hedged item, assets	0	0
Accumulated amount of fair value adjustment on the hedged item, liabilities	304	136
Change in fair value of hedged item for ineffectiveness assessment	(184)	(206)
Fair value hedges | The Group | Interest rate | Fixed rate bonds
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	24,111	21,354
Carrying amount of the hedged item, liabilities	0	0
Accumulated amount of fair value adjustment on the hedged item, assets	1,178	660
Accumulated amount of fair value adjustment on the hedged item, liabilities	0	0
Change in fair value of hedged item for ineffectiveness assessment	641	405
Fair value hedges | The Bank | Interest rate | Fixed rate issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	0	0
Carrying amount of the hedged item, liabilities	32,044	40,557
Accumulated amount of fair value adjustment on the hedged item, assets	0	0
Accumulated amount of fair value adjustment on the hedged item, liabilities	793	565
Change in fair value of hedged item for ineffectiveness assessment	(243)	(357)
Fair value hedges | The Bank | Interest rate | Fixed rate borrowings
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	0	0
Carrying amount of the hedged item, liabilities	1,404	1,272
Accumulated amount of fair value adjustment on the hedged item, assets	0	0
Accumulated amount of fair value adjustment on the hedged item, liabilities	304	136
Change in fair value of hedged item for ineffectiveness assessment	(184)	(206)
Fair value hedges | The Bank | Interest rate | Fixed rate bonds
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Carrying amount of the hedged item, assets	23,239	20,632
Carrying amount of the hedged item, liabilities	0	0
Accumulated amount of fair value adjustment on the hedged item, assets	1,158	655
Accumulated amount of fair value adjustment on the hedged item, liabilities	0	0
Change in fair value of hedged item for ineffectiveness assessment	625	400
Cash flow hedges | The Group | Interest rate | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	38	(1)
Cash flow hedge/currency translation reserve, continuing hedges	(233)	(40)
Cash flow hedge/currency translation reserve, discontinued hedges	97	6
Cash flow hedges | The Group | Interest rate | Customer loans
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	(508)	(657)
Cash flow hedge/currency translation reserve, continuing hedges	1,918	1,226
Cash flow hedge/currency translation reserve, discontinued hedges	(2)	531
Cash flow hedges | The Group | Interest rate | Central bank balances
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	(71)	(220)
Cash flow hedge/currency translation reserve, continuing hedges	19	85
Cash flow hedge/currency translation reserve, discontinued hedges	270	163
Cash flow hedges | The Group | Foreign exchange | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	(8)	28
Cash flow hedge/currency translation reserve, continuing hedges	(40)	(20)
Cash flow hedge/currency translation reserve, discontinued hedges	64	90
Cash flow hedges | The Group | Foreign exchange | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	74	116
Cash flow hedge/currency translation reserve, continuing hedges	13	18
Cash flow hedge/currency translation reserve, discontinued hedges	(41)	(48)
Cash flow hedges | The Bank | Interest rate | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	15	(1)
Cash flow hedge/currency translation reserve, continuing hedges	(189)	(126)
Cash flow hedge/currency translation reserve, discontinued hedges	3	(58)
Cash flow hedges | The Bank | Interest rate | Customer loans
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	(119)	(344)
Cash flow hedge/currency translation reserve, continuing hedges	1,486	1,037
Cash flow hedge/currency translation reserve, discontinued hedges	281	881
Cash flow hedges | The Bank | Interest rate | Central bank balances
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	0	(388)
Cash flow hedge/currency translation reserve, continuing hedges	0	0
Cash flow hedge/currency translation reserve, discontinued hedges	324	441
Cash flow hedges | The Bank | Foreign exchange | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of the Effects of Hedge Accounting [Line Items]
Change in fair value of hedged item for ineffectiveness assessment	(4)	31
Cash flow hedge/currency translation reserve, continuing hedges	(49)	(38)
Cash flow hedge/currency translation reserve, discontinued hedges	£ 16	£ 7

DERIVATIVE FINANCIAL INSTRUME_7

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Accumulated fair value hedge adjustment	£ 360	£ 315
Fixed rate insurance liability	360	344
Fixed rate bonds and mortgages	0	0
Fixed rate bond asset		29
Fair value assets	8,341	8,494
Fair value liabilities	8,228	9,831
The Group | Foreign exchange | Cash flow hedges | Foreign currency issuance | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Hedged cash flows will no longer occur	(6)	(101)
The Group | 1 year or over original maturity
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Fair value assets	7,393	7,569
Fair value liabilities	7,064	9,213
The Bank
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Fixed rate insurance liability	(9)	(25)
Fixed rate bonds and mortgages	0	0
Fixed rate bond asset		29
Fair value assets	12,595	13,638
Fair value liabilities	11,072	14,211
Hedged asset fair value hedge	9	(54)
The Bank | Foreign exchange | Cash flow hedges | Foreign currency issuance | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Hedged cash flows will no longer occur	(1)	(25)
The Bank | 1 year or over original maturity
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Fair value assets	11,755	4,256
Fair value liabilities	£ 10,009	£ 5,101

DERIVATIVE FINANCIAL INSTRUME_8

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair value hedges | The Group | Interest rate | Fixed rate mortgages
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	£ 355	£ (73)
Fair value hedges | The Group | Interest rate | Fixed rate mortgages | Fixed rate mortgages
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	571	186
Fair value hedges | The Group | Interest rate | Fixed rate issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(179)	(326)
Fair value hedges | The Group | Interest rate | Fixed rate issuance | Fixed rate issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	(35)	(28)
Fair value hedges | The Group | Interest rate | Fixed rate borrowings
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(184)	(206)
Fair value hedges | The Group | Interest rate | Fixed rate borrowings | Fixed rate borrowings
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	1	6
Fair value hedges | The Group | Interest rate | Fixed rate bonds
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	641	405
Fair value hedges | The Group | Interest rate | Fixed rate bonds | Fixed rate bonds
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	9	(11)
Fair value hedges | The Bank | Interest rate | Fixed rate mortgages | Fixed rate mortgages
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	0	(15)
Fair value hedges | The Bank | Interest rate | Fixed rate issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(243)	(357)
Fair value hedges | The Bank | Interest rate | Fixed rate issuance | Fixed rate issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	(35)	(38)
Fair value hedges | The Bank | Interest rate | Fixed rate borrowings
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(184)	(206)
Fair value hedges | The Bank | Interest rate | Fixed rate borrowings | Fixed rate borrowings
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	0	6
Fair value hedges | The Bank | Interest rate | Fixed rate bonds
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	625	400
Fair value hedges | The Bank | Interest rate | Fixed rate bonds | Fixed rate bonds
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Hedge ineffectiveness recognised in the income statement	8	4
Cash flow hedges | The Group | Interest rate | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	38	(1)
Cash flow hedges | The Group | Interest rate | Customer deposits | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(27)	0
Hedge ineffectiveness recognised in the income statement	0	0
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	45	7
Cash flow hedges | The Group | Interest rate | Customer loans
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(508)	(657)
Cash flow hedges | The Group | Interest rate | Customer loans | Customer loans
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	23	616
Hedge ineffectiveness recognised in the income statement	262	99
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	(633)	(367)
Cash flow hedges | The Group | Interest rate | Central bank balances
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(71)	(220)
Cash flow hedges | The Group | Interest rate | Central bank balances | Central bank balances
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	28	194
Hedge ineffectiveness recognised in the income statement	(3)	32
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	(95)	(52)
Cash flow hedges | The Group | Foreign exchange | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(8)	28
Cash flow hedges | The Group | Foreign exchange | Foreign currency issuance | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(45)	(202)
Hedge ineffectiveness recognised in the income statement	0	0
Hedged cash flows will no longer occur	(6)	(101)
Hedged item affected income statement	(47)	(73)
Cash flow hedges | The Group | Foreign exchange | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	74	116
Cash flow hedges | The Group | Foreign exchange | Customer deposits | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	3	(22)
Hedge ineffectiveness recognised in the income statement	0	0
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	9	6
Cash flow hedges | The Bank | Interest rate | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	15	(1)
Cash flow hedges | The Bank | Interest rate | Customer deposits | Customer deposits
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	8	25
Hedge ineffectiveness recognised in the income statement	4	0
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	34	35
Cash flow hedges | The Bank | Interest rate | Customer loans
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(119)	(344)
Cash flow hedges | The Bank | Interest rate | Customer loans | Customer loans
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(166)	125
Hedge ineffectiveness recognised in the income statement	(31)	27
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	(324)	(363)
Cash flow hedges | The Bank | Interest rate | Central bank balances
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	0	(388)
Cash flow hedges | The Bank | Interest rate | Central bank balances | Central bank balances
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(111)	361
Hedge ineffectiveness recognised in the income statement	0	35
Hedged cash flows will no longer occur	0	0
Hedged item affected income statement	(60)	(84)
Cash flow hedges | The Bank | Foreign exchange | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(4)	31
Cash flow hedges | The Bank | Foreign exchange | Foreign currency issuance | Foreign currency issuance
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Amounts Reclassified from Reserves to Income Statement [Line Items]
Gain (loss) recognised in other comprehensive income	(1)	(67)
Hedge ineffectiveness recognised in the income statement	0	0
Hedged cash flows will no longer occur	(1)	(25)
Hedged item affected income statement	£ (4)	£ (11)

FINANCIAL ASSETS AT AMORTISED_3

FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	£ 3,380
Ending balance, allowance for expected credit losses	6,132	£ 3,380
The Group
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Exchange and other adjustments	0	2	£ (93)
Impact of transfers between stages	1,456	604	453
Other changes in credit quality	2,246	841	577
Additions (repayments)	(168)	95	107
Methodology and model changes	165	14	(20)
Other items	25	(2)	23
Due from fellow Lloyds Banking Group undertakings	738	1,854
Net carrying amount	5,950	4,852	3,692
Net carrying amount	480,141	474,470
Net carrying amount	5,137	5,325
Total financial assets at amortised cost	491,966	486,501
The Group | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	0	0
Transfers to Stage 2	0	0
Transfers to Stage 3	0	0
Impact of transfers between stages	0	0
The Group | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	1
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Charge to the income statement	4
Ending balance, allowance for expected credit losses	4	0	1
The Group | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	3,163	3,020
Exchange and other adjustments	66	312
Impact of transfers between stages	1,366	598
Other changes in credit quality	2,155	832
Additions (repayments)	112	(104)
Methodology and model changes	165	14
Charge to the income statement	3,798	1,340
Advances written off	(1,529)	(1,881)
Recoveries of advances written off in previous years	250	424
Discount unwind	(47)	(52)
Ending balance, allowance for expected credit losses	5,701	3,163	3,020
The Group | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	1	2
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	1	1	2
The Group | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	568	459
Exchange and other adjustments	21	283
Impact of transfers between stages	249	128
Other changes in credit quality	181	(123)
Additions (repayments)	(44)	(127)
Methodology and model changes	90	(44)
Charge to the income statement	476	(166)
Advances written off	(76)	(89)
Recoveries of advances written off in previous years	15	57
Discount unwind	20	24
Ending balance, allowance for expected credit losses	1,024	568	459
The Group | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	426,086	441,129
The Group | Stage 1 | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	1
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Charge to the income statement	4
Ending balance, allowance for expected credit losses	4	0	1
The Group | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	669	518
Exchange and other adjustments	0	10
Impact of transfers between stages	(166)	(14)
Other changes in credit quality	838	31
Additions (repayments)	37	91
Methodology and model changes	(31)	33
Charge to the income statement	678	141
Ending balance, allowance for expected credit losses	1,347	669	518
The Group | Stage 1 | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0	0
The Group | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	23	37
Exchange and other adjustments	0	0
Impact of transfers between stages	(2)	(16)
Other changes in credit quality	63	6
Additions (repayments)	14	(4)
Methodology and model changes	6	0
Charge to the income statement	81	(14)
Ending balance, allowance for expected credit losses	104	23	37
The Group | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	49,155	27,512
The Group | Stage 2 | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Charge to the income statement	0
Ending balance, allowance for expected credit losses	0	0	0
The Group | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	993	992
Exchange and other adjustments	2	(9)
Impact of transfers between stages	850	83
Other changes in credit quality	(33)	2
Additions (repayments)	143	(48)
Methodology and model changes	170	(27)
Charge to the income statement	1,130	10
Ending balance, allowance for expected credit losses	2,125	993	992
The Group | Stage 2 | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0	0
The Group | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	281	226
Exchange and other adjustments	0	0
Impact of transfers between stages	168	99
Other changes in credit quality	(26)	10
Additions (repayments)	(15)	(20)
Methodology and model changes	60	(34)
Charge to the income statement	187	55
Ending balance, allowance for expected credit losses	468	281	226
The Group | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	4,475	4,288
The Group | Stage 3 | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Charge to the income statement	0
Ending balance, allowance for expected credit losses	0	0	0
The Group | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	1,359	1,432
Exchange and other adjustments	43	28
Impact of transfers between stages	682	529
Other changes in credit quality	1,183	905
Additions (repayments)	(38)	(60)
Methodology and model changes	26	8
Charge to the income statement	1,853	1,382
Advances written off	(1,490)	(1,827)
Recoveries of advances written off in previous years	250	396
Discount unwind	(47)	(52)
Ending balance, allowance for expected credit losses	1,968	1,359	1,432
The Group | Stage 3 | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	1	2
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	1	1	2
The Group | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	122	118
Exchange and other adjustments	0	0
Impact of transfers between stages	83	45
Other changes in credit quality	(23)	(33)
Additions (repayments)	(13)	(16)
Methodology and model changes	24	(10)
Charge to the income statement	71	(14)
Advances written off	(37)	(35)
Recoveries of advances written off in previous years	15	29
Discount unwind	20	24
Ending balance, allowance for expected credit losses	191	122	118
The Group | POCI
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	12,250	13,572
The Group | POCI | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Charge to the income statement	0
Ending balance, allowance for expected credit losses	0	0	0
The Group | POCI | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	142	78
Exchange and other adjustments	21	283
Other changes in credit quality	167	(106)
Additions (repayments)	(30)	(87)
Methodology and model changes	0	0
Charge to the income statement	137	(193)
Advances written off	(39)	(54)
Recoveries of advances written off in previous years	0	28
Discount unwind	0	0
Ending balance, allowance for expected credit losses	261	142	78
The Group | POCI | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0	0
The Group | POCI | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	142	78
Exchange and other adjustments	21	283
Other changes in credit quality	167	(106)
Additions (repayments)	(30)	(87)
Methodology and model changes	0	0
Charge to the income statement	137	(193)
Advances written off	(39)	(54)
Recoveries of advances written off in previous years	0	28
Discount unwind	0	0
Ending balance, allowance for expected credit losses	261	142	78
The Group | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	4,852	3,693
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(25)	(125)
Additions (repayments)	1,127	1,284
Ending balance, loans and advances to banks	5,954	4,852	3,693
Ending balance, allowance for expected credit losses	4	0
Net carrying amount	5,950	4,852
The Group | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 2 | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(217)	(53)
The Group | Stage 2 | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(4)	(13)
The Group | Stage 2 | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	267	92
The Group | Stage 2 | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	22	33
The Group | Stage 2 | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(50)	(39)
The Group | Stage 2 | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(18)	(20)
The Group | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	477,633	467,064
Beginning balance, allowance for expected credit losses	3,163
Exchange and other adjustments	831	(47)
Additions (repayments)	8,657	8,379
Acquisition of portfolios		3,694
Impact of transfers between stages	0	0
Advances written off	(1,529)	(1,881)
Recoveries of advances written off in previous years	250	424
Ending balance, allowance for expected credit losses	5,701	3,163
Ending balance, loans and advances to customers	485,842	477,633	467,064
Net carrying amount	480,141	474,470
The Group | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	0	0
The Group | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	0	0
The Group | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	0	0
The Group | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 1 | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	144	229
The Group | Stage 1 | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	17	17
The Group | Stage 1 | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(141)	(222)
The Group | Stage 1 | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(17)	(17)
The Group | Stage 1 | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(3)	(7)
The Group | Stage 1 | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Group | Stage 3 | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(9)	(15)
The Group | Stage 3 | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	(5)
The Group | Stage 3 | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(156)	(140)
The Group | Stage 3 | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(35)	(21)
The Group | Stage 3 | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	165	155
The Group | Stage 3 | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	35	26
The Group | Impact of transfers between stages | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	1,366	598
The Group | Impact of transfers between stages | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	249	128
The Group | Impact of transfers between stages | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(84)	(175)
The Group | Impact of transfers between stages | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(15)	(15)
The Group | Impact of transfers between stages | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	880	353
The Group | Impact of transfers between stages | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	198	104
The Group | Impact of transfers between stages | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	570	420
The Group | Impact of transfers between stages | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	66	39
The Group | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	5,326	5,097
Beginning balance, allowance for expected credit losses	1
Exchange and other adjustments	(17)	(91)
Additions (repayments)	(171)	320
Ending balance, allowance for expected credit losses	1	1
Ending balance, debt securities	5,138	5,326	5,097
Net carrying amount	5,137	5,325
The Bank
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Exchange and other adjustments	(1)	(6)	82
Due from fellow Lloyds Banking Group undertakings	128,771	202,277
Net carrying amount	5,656	4,453	3,153
Net carrying amount	178,269	177,569
Net carrying amount	4,315	5,241
Total financial assets at amortised cost	317,011	389,540
The Bank | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	1
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Charge to the income statement	4
Ending balance, allowance for expected credit losses	4	0	1
The Bank | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	1,173	1,534
Exchange and other adjustments	23	(32)
Impact of transfers between stages	602	258
Other changes in credit quality	818	233
Additions (repayments)	153	(43)
Methodology and model changes	165	14
Charge to the income statement	1,738	462
Advances written off	(708)	(911)
Recoveries of advances written off in previous years	86	152
Discount unwind	(31)	(32)
Ending balance, allowance for expected credit losses	2,281	1,173	1,534
The Bank | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	1	0
Ending balance, allowance for expected credit losses	1	0	0
The Bank | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	294,342	377,409
The Bank | Stage 1 | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	1
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Charge to the income statement	4
Ending balance, allowance for expected credit losses	4	0	1
The Bank | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	238	209
Exchange and other adjustments	0	1
Impact of transfers between stages	(35)	(7)
Other changes in credit quality	382	(11)
Additions (repayments)	35	13
Methodology and model changes	(31)	33
Charge to the income statement	351	28
Ending balance, allowance for expected credit losses	589	238	209
The Bank | Stage 1 | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	1	0
Ending balance, allowance for expected credit losses	1	0	0
The Bank | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	20,520	10,246
The Bank | Stage 2 | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0
Additions (repayments)	0	0
Charge to the income statement	0
Ending balance, allowance for expected credit losses	0	0	0
The Bank | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	435	502
Exchange and other adjustments	0	0
Impact of transfers between stages	275	(17)
Other changes in credit quality	(43)	18
Additions (repayments)	137	(41)
Methodology and model changes	170	(27)
Charge to the income statement	539	(67)
Ending balance, allowance for expected credit losses	974	435	502
The Bank | Stage 2 | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0	0
The Bank | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Total financial assets at amortised cost	2,149	1,885
The Bank | Stage 3 | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0
Additions (repayments)	0	0
Charge to the income statement	0
Ending balance, allowance for expected credit losses	0	0	0
The Bank | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	500	823
Exchange and other adjustments	23	(33)
Impact of transfers between stages	362	282
Other changes in credit quality	479	226
Additions (repayments)	(19)	(15)
Methodology and model changes	26	8
Charge to the income statement	848	501
Advances written off	(708)	(911)
Recoveries of advances written off in previous years	86	152
Discount unwind	(31)	(32)
Ending balance, allowance for expected credit losses	718	500	823
The Bank | Stage 3 | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0	0
The Bank | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	4,453	3,154
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(19)	(105)
Additions (repayments)	1,226	1,404
Ending balance, loans and advances to banks	5,660	4,453	3,154
Ending balance, allowance for expected credit losses	4	0
Net carrying amount	5,656	4,453
The Bank | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Bank | Stage 2 | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(49)	(17)
The Bank | Stage 2 | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	66	33
The Bank | Stage 2 | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(17)	(16)
The Bank | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	178,742	173,849
Beginning balance, allowance for expected credit losses	1,173
Exchange and other adjustments	(181)	(339)
Additions (repayments)	2,611	5,991
Impact of transfers between stages	0	0
Advances written off	(708)	(911)
Recoveries of advances written off in previous years	86	152
Ending balance, allowance for expected credit losses	2,281	1,173
Ending balance, loans and advances to customers	180,550	178,742	173,849
Net carrying amount	178,269	177,569
The Bank | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	0	0
The Bank | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	0	0
The Bank | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	0	0
The Bank | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Bank | Stage 1 | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	73	113
The Bank | Stage 1 | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(72)	(109)
The Bank | Stage 1 | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(1)	(4)
The Bank | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	0	0
The Bank | Stage 3 | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(10)	(7)
The Bank | Stage 3 | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(59)	(68)
The Bank | Stage 3 | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	69	75
The Bank | Impact of transfers between stages | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	602	258
The Bank | Impact of transfers between stages | Stage 1 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	(49)	(96)
The Bank | Impact of transfers between stages | Stage 2 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	340	127
The Bank | Impact of transfers between stages | Stage 3 | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Impact of transfers between stages	311	227
The Bank | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	5,241	4,960
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(16)	(91)
Additions (repayments)	(909)	372
Ending balance, allowance for expected credit losses	1	0
Ending balance, debt securities	4,316	5,241	4,960
Net carrying amount	4,315	5,241
Stage 1 | The Group | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	23
Beginning balance, retail mortgages	257,043	257,797
Exchange and other adjustments	0	(1)
Additions (repayments)	8,619	799
Acquisition of portfolios		3,694
Impact of transfers between stages	(14,244)	(5,246)
Ending balance, allowance for expected credit losses	104	23
Ending balance, retail mortgages	251,418	257,043	257,797
Net carrying amount	251,314	257,020
Stage 1 | The Group | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	(16,463)	(7,879)
Stage 1 | The Group | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	2,418	3,060
Stage 1 | The Group | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	(199)	(427)
Stage 1 | The Group | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	4,852	3,691
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(25)	(125)
Additions (repayments)	1,127	1,286
Ending balance, loans and advances to banks	5,954	4,852	3,691
Ending balance, allowance for expected credit losses	4	0
Net carrying amount	5,950	4,852
Stage 1 | The Group | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	429,767	420,968
Beginning balance, allowance for expected credit losses	669
Exchange and other adjustments	1,013	(312)
Additions (repayments)	9,989	13,690
Acquisition of portfolios		3,694
Impact of transfers between stages	(25,161)	(8,273)
Ending balance, allowance for expected credit losses	1,347	669
Ending balance, loans and advances to customers	415,608	429,767	420,968
Net carrying amount	414,261	429,098
Stage 1 | The Group | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	(28,516)	(13,052)
Stage 1 | The Group | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	4,970	6,318
Stage 1 | The Group | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	(1,615)	(1,539)
Stage 1 | The Group | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	5,325	5,095
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(17)	(90)
Additions (repayments)	(171)	320
Ending balance, allowance for expected credit losses	0	0
Ending balance, debt securities	5,137	5,325	5,095
Net carrying amount	5,137	5,325
Stage 1 | The Bank | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	4,453	3,154
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(19)	(105)
Additions (repayments)	1,226	1,404
Ending balance, loans and advances to banks	5,660	4,453	3,154
Ending balance, allowance for expected credit losses	4	0
Net carrying amount	5,656	4,453
Stage 1 | The Bank | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	165,676	160,379
Beginning balance, allowance for expected credit losses	238
Exchange and other adjustments	40	(325)
Additions (repayments)	1,231	7,702
Impact of transfers between stages	(10,758)	(2,080)
Ending balance, allowance for expected credit losses	589	238
Ending balance, loans and advances to customers	156,189	165,676	160,379
Net carrying amount	155,600	165,438
Stage 1 | The Bank | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	(11,777)	(4,236)
Stage 1 | The Bank | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	1,974	2,805
Stage 1 | The Bank | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	(955)	(649)
Stage 1 | The Bank | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	5,241	4,960
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	(16)	(91)
Additions (repayments)	(909)	372
Ending balance, allowance for expected credit losses	1	0
Ending balance, debt securities	4,316	5,241	4,960
Net carrying amount	4,315	5,241
Stage 2 | The Group | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	281
Beginning balance, retail mortgages	16,935	13,654
Exchange and other adjustments	0	0
Additions (repayments)	(1,411)	(1,432)
Acquisition of portfolios		0
Impact of transfers between stages	13,494	4,713
Ending balance, allowance for expected credit losses	468	281
Ending balance, retail mortgages	29,018	16,935	13,654
Net carrying amount	28,550	16,654
Stage 2 | The Group | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	16,882	8,242
Stage 2 | The Group | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	(2,414)	(3,057)
Stage 2 | The Group | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	(974)	(472)
Stage 2 | The Group | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	0	2
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	(2)
Ending balance, loans and advances to banks	0	0	2
Ending balance, allowance for expected credit losses	0	0
Net carrying amount	0	0
Stage 2 | The Group | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	28,505	25,308
Beginning balance, allowance for expected credit losses	993
Exchange and other adjustments	24	(44)
Additions (repayments)	578	(2,520)
Acquisition of portfolios		0
Impact of transfers between stages	22,173	5,761
Ending balance, allowance for expected credit losses	2,125	993
Ending balance, loans and advances to customers	51,280	28,505	25,308
Net carrying amount	49,155	27,512
Stage 2 | The Group | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	29,128	13,484
Stage 2 | The Group | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	(4,954)	(6,286)
Stage 2 | The Group | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	(2,001)	(1,437)
Stage 2 | The Group | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0
Ending balance, debt securities	0	0	0
Net carrying amount	0	0
Stage 2 | The Bank | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, loans and advances to banks	0	0	0
Ending balance, allowance for expected credit losses	0	0
Net carrying amount	0	0
Stage 2 | The Bank | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	10,681	11,006
Beginning balance, allowance for expected credit losses	435
Exchange and other adjustments	(1)	(14)
Additions (repayments)	1,592	(1,424)
Impact of transfers between stages	9,222	1,113
Ending balance, allowance for expected credit losses	974	435
Ending balance, loans and advances to customers	21,494	10,681	11,006
Net carrying amount	20,520	10,246
Stage 2 | The Bank | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	12,089	4,455
Stage 2 | The Bank | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	(1,967)	(2,782)
Stage 2 | The Bank | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	(900)	(560)
Stage 2 | The Bank | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0
Ending balance, debt securities	0	0	0
Net carrying amount	0	0
Stage 3 | The Group | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	122
Beginning balance, retail mortgages	1,506	1,393
Exchange and other adjustments	0	2
Additions (repayments)	(375)	(416)
Acquisition of portfolios		0
Impact of transfers between stages	750	533
Advances written off	(37)	(35)
Recoveries of advances written off in previous years	15	29
Ending balance, allowance for expected credit losses	191	122
Ending balance, retail mortgages	1,859	1,506	1,393
Net carrying amount	1,668	1,384
Stage 3 | The Group | Stage 2 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	(419)	(363)
Stage 3 | The Group | Stage 1 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	(4)	(3)
Stage 3 | The Group | Stage 3 | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	1,173	899
Stage 3 | The Group | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, loans and advances to banks	0	0	0
Ending balance, allowance for expected credit losses	0	0
Net carrying amount	0	0
Stage 3 | The Group | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	5,647	5,397
Beginning balance, allowance for expected credit losses	1,359
Exchange and other adjustments	(198)	26
Additions (repayments)	(754)	(857)
Acquisition of portfolios		0
Impact of transfers between stages	2,988	2,512
Advances written off	(1,490)	(1,827)
Recoveries of advances written off in previous years	250	396
Ending balance, allowance for expected credit losses	1,968	1,359
Ending balance, loans and advances to customers	6,443	5,647	5,397
Net carrying amount	4,475	4,288
Stage 3 | The Group | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	(612)	(432)
Stage 3 | The Group | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	(16)	(32)
Stage 3 | The Group | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	3,616	2,976
Stage 3 | The Group | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	1	2
Beginning balance, allowance for expected credit losses	1
Exchange and other adjustments	0	(1)
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	1	1
Ending balance, debt securities	1	1	2
Net carrying amount	0	0
Stage 3 | The Bank | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, loans and advances to banks	0	0	0
Ending balance, allowance for expected credit losses	0	0
Net carrying amount	0	0
Stage 3 | The Bank | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	2,385	2,464
Beginning balance, allowance for expected credit losses	500
Exchange and other adjustments	(220)	0
Additions (repayments)	(212)	(287)
Impact of transfers between stages	1,536	967
Advances written off	(708)	(911)
Recoveries of advances written off in previous years	86	152
Ending balance, allowance for expected credit losses	718	500
Ending balance, loans and advances to customers	2,867	2,385	2,464
Net carrying amount	2,149	1,885
Stage 3 | The Bank | Loans and advances to customers | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 2	(312)	(219)
Stage 3 | The Bank | Loans and advances to customers | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 1	(7)	(23)
Stage 3 | The Bank | Loans and advances to customers | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Transfers to Stage 3	1,855	1,209
Stage 3 | The Bank | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0
Ending balance, debt securities	0	0	0
Net carrying amount	0	0
POCI | The Group | Retail - UK mortgages
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	142
Beginning balance, retail mortgages	13,714	15,391
Exchange and other adjustments	(8)	283
Additions (repayments)	(1,156)	(1,934)
Acquisition of portfolios		0
Advances written off	(39)	(54)
Recoveries of advances written off in previous years	0	28
Ending balance, allowance for expected credit losses	261	142
Ending balance, retail mortgages	12,511	13,714	15,391
Net carrying amount	12,250	13,572
POCI | The Group | Loans and advances to banks
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to banks	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, loans and advances to banks	0	0	0
Ending balance, allowance for expected credit losses	0	0
Net carrying amount	0	0
POCI | The Group | Loans and advances to customers
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, loans and advances to customers	13,714	15,391
Beginning balance, allowance for expected credit losses	142
Exchange and other adjustments	(8)	283
Additions (repayments)	(1,156)	(1,934)
Acquisition of portfolios		0
Advances written off	(39)	(54)
Recoveries of advances written off in previous years	0	28
Ending balance, allowance for expected credit losses	261	142
Ending balance, loans and advances to customers	12,511	13,714	15,391
Net carrying amount	12,250	13,572
POCI | The Group | Debt securities
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, debt securities	0	0
Beginning balance, allowance for expected credit losses	0
Exchange and other adjustments	0	0
Additions (repayments)	0	0
Ending balance, allowance for expected credit losses	0	0
Ending balance, debt securities	0	0	0
Net carrying amount	0	0
Due from fellow Lloyds Banking Group undertakings | The Group
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	43
Ending balance, allowance for expected credit losses	0	43
Due from fellow Lloyds Banking Group undertakings	738	1,897
Net carrying amount	738	1,854
Due from fellow Lloyds Banking Group undertakings | The Group | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0
Ending balance, allowance for expected credit losses	0	0
Due from fellow Lloyds Banking Group undertakings	738	1,854
Net carrying amount	738	1,854
Due from fellow Lloyds Banking Group undertakings | The Group | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0
Ending balance, allowance for expected credit losses	0	0
Due from fellow Lloyds Banking Group undertakings	0	0
Net carrying amount	0	0
Due from fellow Lloyds Banking Group undertakings | The Group | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	43
Ending balance, allowance for expected credit losses	0	43
Due from fellow Lloyds Banking Group undertakings	0	43
Net carrying amount	0	0
Due from fellow Lloyds Banking Group undertakings | The Group | POCI
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0
Ending balance, allowance for expected credit losses	0	0
Due from fellow Lloyds Banking Group undertakings	0	0
Net carrying amount	0	0
Due from fellow Lloyds Banking Group undertakings | The Bank
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	73
Ending balance, allowance for expected credit losses	27	73
Due from fellow Lloyds Banking Group undertakings	128,798	202,350
Net carrying amount	128,771	202,277
Due from fellow Lloyds Banking Group undertakings | The Bank | Stage 1
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	18
Ending balance, allowance for expected credit losses	20	18
Due from fellow Lloyds Banking Group undertakings	128,791	202,295
Net carrying amount	128,771	202,277
Due from fellow Lloyds Banking Group undertakings | The Bank | Stage 2
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	0
Ending balance, allowance for expected credit losses	0	0
Due from fellow Lloyds Banking Group undertakings	0	0
Net carrying amount	0	0
Due from fellow Lloyds Banking Group undertakings | The Bank | Stage 3
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	55
Ending balance, allowance for expected credit losses	7	55
Due from fellow Lloyds Banking Group undertakings	7	55
Net carrying amount	0	0
Retail - UK mortgages | The Group
FINANCIAL ASSETS AT AMORTISED COST (Details) - Schedule of Debt Securities and Loans and Advances to Banks and Customers [Line Items]
Beginning balance, allowance for expected credit losses	568
Beginning balance, retail mortgages	289,198	288,235
Exchange and other adjustments	(8)	284
Additions (repayments)	5,677	(2,983)
Acquisition of portfolios		3,694
Advances written off	(76)	(89)
Recoveries of advances written off in previous years	15	57
Ending balance, allowance for expected credit losses	1,024	568
Ending balance, retail mortgages	294,806	289,198	£ 288,235
Net carrying amount	£ 293,782	£ 288,630

FINANCIAL ASSETS AT AMORTISED_4

FINANCIAL ASSETS AT AMORTISED COST (Details) - Narrative - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL ASSETS AT AMORTISED COST (Details) -Narrative [Line Items]
Allowance account for credit losses of financial assets	£ 6,132	£ 3,380
The Group
FINANCIAL ASSETS AT AMORTISED COST (Details) -Narrative [Line Items]
Loans and advances to customers	480,141	474,470
Loans and advances to banks	5,950	4,852	£ 3,692
The Group | 1 year or over original maturity
FINANCIAL ASSETS AT AMORTISED COST (Details) -Narrative [Line Items]
Loans and advances to customers	385,517	378,457
Loans and advances to banks	1,082	1,498
Debt securities	5,110	5,314
The Bank
FINANCIAL ASSETS AT AMORTISED COST (Details) -Narrative [Line Items]
Loans and advances to customers	178,269	177,569
Loans and advances to banks	5,656	4,453	£ 3,153
The Bank | 1 year or over original maturity
FINANCIAL ASSETS AT AMORTISED COST (Details) -Narrative [Line Items]
Loans and advances to customers	105,738	103,042
Loans and advances to banks	1,024	1,231
Debt securities	4,300	5,241
Residual value and voluntary terminations
FINANCIAL ASSETS AT AMORTISED COST (Details) -Narrative [Line Items]
Allowance account for credit losses of financial assets	£ 192	£ 201

FINANCIAL ASSETS AT AMORTISED_5

FINANCIAL ASSETS AT AMORTISED COST (Details) -Schedule of Undrawn Balances - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	£ 3,380
Ending balance, allowance for expected credit losses	6,132	£ 3,380
The Group
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Impact of transfers between stages	1,456	604	£ 453
Other items charged to the income statement	25	(2)	23
The Group | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	173	190
Exchange and other adjustments	0	0
Transfers to Stage 1	0	0
Transfers to Stage 2	0	0
Transfers to Stage 3	0	0
Impact of transfers between stages	90	6
Transfer between stages	90	6
Other items charged to the income statement	163	(23)
Charge to the income statement	253	(17)
Ending balance, allowance for expected credit losses	426	173	190
The Bank | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	90	76
Exchange and other adjustments	0	0
Transfers to Stage 1	0	0
Transfers to Stage 2	0	0
Transfers to Stage 3	0	0
Impact of transfers between stages	53	7
Transfer between stages	53	7
Other items charged to the income statement	102	7
Charge to the income statement	155	14
Ending balance, allowance for expected credit losses	245	90	76
Stage 1 | The Group | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	91	121
Exchange and other adjustments	0	(1)
Transfers to Stage 1	19	19
Transfers to Stage 2	(10)	(4)
Transfers to Stage 3	(1)	(1)
Impact of transfers between stages	(10)	(17)
Transfer between stages	(2)	(3)
Other items charged to the income statement	102	(26)
Charge to the income statement	100	(29)
Ending balance, allowance for expected credit losses	191	91	121
Stage 1 | The Bank | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	44	41
Exchange and other adjustments	0	0
Transfers to Stage 1	9	8
Transfers to Stage 2	(5)	(2)
Transfers to Stage 3	0	0
Impact of transfers between stages	(5)	(7)
Transfer between stages	(1)	(1)
Other items charged to the income statement	59	4
Charge to the income statement	58	3
Ending balance, allowance for expected credit losses	102	44	41
Stage 2 | The Group | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	77	63
Exchange and other adjustments	0	1
Transfers to Stage 1	(19)	(19)
Transfers to Stage 2	10	4
Transfers to Stage 3	(6)	(3)
Impact of transfers between stages	90	24
Transfer between stages	75	6
Other items charged to the income statement	69	7
Charge to the income statement	144	13
Ending balance, allowance for expected credit losses	221	77	63
Stage 2 | The Bank | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	42	32
Exchange and other adjustments	0	0
Transfers to Stage 1	(9)	(8)
Transfers to Stage 2	5	2
Transfers to Stage 3	(3)	(2)
Impact of transfers between stages	58	15
Transfer between stages	51	7
Other items charged to the income statement	42	3
Charge to the income statement	93	10
Ending balance, allowance for expected credit losses	135	42	32
Stage 3 | The Group | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	5	6
Exchange and other adjustments	0	0
Transfers to Stage 1	0	0
Transfers to Stage 2	0	0
Transfers to Stage 3	7	4
Impact of transfers between stages	10	(1)
Transfer between stages	17	3
Other items charged to the income statement	(8)	(4)
Charge to the income statement	9	(1)
Ending balance, allowance for expected credit losses	14	5	6
Stage 3 | The Bank | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	4	3
Exchange and other adjustments	0	0
Transfers to Stage 1	0	0
Transfers to Stage 2	0	0
Transfers to Stage 3	3	2
Impact of transfers between stages	0	(1)
Transfer between stages	3	1
Other items charged to the income statement	1	0
Charge to the income statement	4	1
Ending balance, allowance for expected credit losses	8	4	3
POCI | The Group | Undrawn balances
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Beginning balance, allowance for expected credit losses	0	0
Exchange and other adjustments	0	0
Other items charged to the income statement	0	0
Charge to the income statement	0	0
Ending balance, allowance for expected credit losses	£ 0	£ 0	£ 0

FINANCIAL ASSETS AT AMORTISED_6

FINANCIAL ASSETS AT AMORTISED COST (Details) - Total Impairment - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	£ 6,132	£ 3,380
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
The Group | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	4	0
The Group | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	5,701	3,163
The Group | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1	1
The Group | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	43
The Group | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	5,706	3,207
The Group | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	426	173
The Bank
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	2,558	1,336
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
The Bank | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	4	0
The Bank | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	2,281	1,173
The Bank | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1	0
The Bank | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	27	73
The Bank | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	2,313	1,246
The Bank | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	245	90
Stage 1 | The Group
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,542	760
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
Stage 1 | The Group | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	4	0
Stage 1 | The Group | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,347	669
Stage 1 | The Group | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 1 | The Group | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 1 | The Group | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,351	669
Stage 1 | The Group | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	191	91
Stage 1 | The Bank
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	716	300
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
Stage 1 | The Bank | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	4	0
Stage 1 | The Bank | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	589	238
Stage 1 | The Bank | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1	0
Stage 1 | The Bank | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	20	18
Stage 1 | The Bank | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	614	256
Stage 1 | The Bank | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	102	44
Stage 2 | The Group
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	2,346	1,070
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
Stage 2 | The Group | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 2 | The Group | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	2,125	993
Stage 2 | The Group | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 2 | The Group | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 2 | The Group | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	2,125	993
Stage 2 | The Group | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	221	77
Stage 2 | The Bank
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,109	477
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
Stage 2 | The Bank | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 2 | The Bank | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	974	435
Stage 2 | The Bank | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 2 | The Bank | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 2 | The Bank | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	974	435
Stage 2 | The Bank | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	135	42
Stage 3 | The Group
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,983	1,408
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
Stage 3 | The Group | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 3 | The Group | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,968	1,359
Stage 3 | The Group | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1	1
Stage 3 | The Group | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	43
Stage 3 | The Group | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	1,969	1,403
Stage 3 | The Group | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	14	5
Stage 3 | The Bank
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	733	559
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
Stage 3 | The Bank | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 3 | The Bank | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	718	500
Stage 3 | The Bank | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
Stage 3 | The Bank | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	7	55
Stage 3 | The Bank | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	725	555
Stage 3 | The Bank | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	8	4
POCI | The Group
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	261	142
Expected credit loss in respect of financial assets at fair value through other comprehensive income (memorandum item)	0	0
POCI | The Group | Loans and advances to banks
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
POCI | The Group | Loans and advances to customers
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	261	142
POCI | The Group | Debt securities
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
POCI | The Group | Due from fellow Lloyds Banking Group undertakings
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	0	0
POCI | The Group | Financial assets at amortised cost
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	261	142
POCI | The Group | Provisions in relation to loan commitments and financial guarantees
ALLOWANCE FOR IMPAIRMENT LOSSES (Details) - Schedule of Movement in the Allowance for Impairment Losses [Line Items]
Total allowance for impairment loss	£ 0	£ 0

FINANCE LEASE RECEIVABLES (Deta

FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Balances - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	£ 1,503	£ 2,032
Unearned future finance income on finance leases	(440)	(478)
Rentals received in advance	(16)	(18)
Net investment in finance leases	1,047	1,536
The Group | Not later than 1 year
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	308	484
Net investment in finance leases	237	404
The Group | Later than 1 year and not later than 2 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	180	340
Net investment in finance leases	135	322
The Group | Later than 2 years and not later than 3 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	143	174
Net investment in finance leases	104	126
The Group | Later than 3 years and not later than 4 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	191	138
Net investment in finance leases	159	98
The Group | Later than 4 years and not later than 5 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	110	201
Net investment in finance leases	86	166
The Group | Over 5 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	571	695
Net investment in finance leases	326	420
The Bank
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	31	93
Unearned future finance income on finance leases	0	0
Rentals received in advance	(1)	0
Net investment in finance leases	30	93
The Bank | Not later than 1 year
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	18	70
Net investment in finance leases	17	70
The Bank | Later than 1 year and not later than 2 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	2	6
Net investment in finance leases	2	6
The Bank | Later than 2 years and not later than 3 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	2	6
Net investment in finance leases	2	6
The Bank | Later than 3 years and not later than 4 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	7	6
Net investment in finance leases	7	6
The Bank | Later than 4 years and not later than 5 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	2	5
Net investment in finance leases	2	5
The Bank | Over 5 years
Gross investment in finance leases, receivable:
Gross investment in finance leases, receivable	0	0
Net investment in finance leases	£ 0	£ 0

FINANCE LEASE RECEIVABLES (De_2

FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	£ 1,047	£ 1,536
The Group | Not later than 1 year
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	237	404
The Group | Later than 1 year and not later than 2 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	135	322
The Group | Later than 2 years and not later than 3 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	104	126
The Group | Later than 3 years and not later than 4 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	159	98
The Group | Later than 4 years and not later than 5 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	86	166
The Group | Over 5 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	326	420
The Bank
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	30	93
The Bank | Not later than 1 year
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	17	70
The Bank | Later than 1 year and not later than 2 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	2	6
The Bank | Later than 2 years and not later than 3 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	2	6
The Bank | Later than 3 years and not later than 4 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	7	6
The Bank | Later than 4 years and not later than 5 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	2	5
The Bank | Over 5 years
FINANCE LEASE RECEIVABLES (Details) - Schedule of Lease Receivable Net Investment [Line Items]
Net investment in finance leases	£ 0	£ 0

FINANCE LEASE RECEIVABLES - Nar

FINANCE LEASE RECEIVABLES - Narrative (Details) - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCE LEASE RECEIVABLES (Details) - Narrative [Line Items]
Allowance for uncollectable finance lease receivables	£ 22	£ 12

FINANCIAL ASSETS AT FAIR VALU_8

FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Details) - Schedule of Financial Assets At Fair Value Through Other Comprehensive Income - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Debt securities:
Net carrying amount	£ 5,137	£ 5,325
Total financial assets at fair value through other comprehensive income	27,260	24,617
The Group | Financial assets at fair value through other comprehensive income
Debt securities:
Government securities	14,267	13,082
Asset-backed securities	65	60
Corporate and other debt securities	12,928	11,036
Net carrying amount	27,260	24,178
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	27,260	24,617
The Bank
Debt securities:
Net carrying amount	4,315	5,241
Total financial assets at fair value through other comprehensive income	24,647	22,160
The Bank | Financial assets at fair value through other comprehensive income
Debt securities:
Government securities	14,114	12,938
Asset-backed securities	0	0
Corporate and other debt securities	10,533	8,783
Net carrying amount	24,647	21,721
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	£ 24,647	£ 22,160

FINANCIAL ASSETS AT FAIR VALU_9

FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Details) - Narrative - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Details) - Narrative [Line Items]
Financial assets at fair value through other comprehensive income with maturities greater than one year	£ 25,826	£ 23,385
The Bank
FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Details) - Narrative [Line Items]
Financial assets at fair value through other comprehensive income with maturities greater than one year	£ 23,494	£ 21,052

GOODWILL OF THE GROUP (Details)

GOODWILL OF THE GROUP (Details) - Schedule of Goodwill - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
GOODWILL OF THE GROUP (Details) - Schedule of Goodwill [Line Items]
Impairment charged to the income statement	£ (4)
The Group
GOODWILL OF THE GROUP (Details) - Schedule of Goodwill [Line Items]
At 1 January	474	£ 474
Impairment charged to the income statement	(4)	0
Cost	814	814
Accumulated impairment losses	(344)	(340)
At 31 December	£ 474	£ 474	£ 470

GOODWILL OF THE GROUP (Detail_2

GOODWILL OF THE GROUP (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
GOODWILL OF THE GROUP (Details) - Narrative [Line Items]
Impairment charged to the income statement	£ 4
Cards
GOODWILL OF THE GROUP (Details) - Narrative [Line Items]
Discount rate applied to cash flow projections (in percent)	13.00%
The Group
GOODWILL OF THE GROUP (Details) - Narrative [Line Items]
Goodwill	£ 470	£ 474	£ 474
Impairment charged to the income statement	4	0
The Group | Cards
GOODWILL OF THE GROUP (Details) - Narrative [Line Items]
Goodwill	£ 302	£ 302
Percentage of entity goodwill (in percent)	64.00%	64.00%
The Group | Motor finance
GOODWILL OF THE GROUP (Details) - Narrative [Line Items]
Goodwill	£ 166	£ 170
Percentage of entity goodwill (in percent)	35.00%	36.00%
Discount rate applied to cash flow projections (in percent)	14.00%
Growth rate used to extrapolate cash flow projections (in percent)	0.50%

OTHER INTANGIBLE ASSETS (Detail

OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	£ 3,781
At 31 December	4,112	£ 3,781
Cost | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	9,332	8,313
Additions	984	1,029
Disposals	(55)	(10)
At 31 December	10,261	9,332
Accumulated amortisation | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	5,551	4,991
Charge for the year (note 9)	653	562
Disposals	(55)	(2)
At 31 December	6,149	5,551
Brands | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	380
At 31 December	380	380
Brands | Cost | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	584	584
Additions	0	0
Disposals	0	0
At 31 December	584	584
Brands | Accumulated amortisation | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	204	204
Charge for the year (note 9)	0	0
Disposals	0	0
At 31 December	204	204
Core deposit intangible | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	0
At 31 December	0	0
Core deposit intangible | Cost | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	2,770	2,770
Additions	0	0
Disposals	0	0
At 31 December	2,770	2,770
Core deposit intangible | Accumulated amortisation | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	2,770	2,770
Charge for the year (note 9)	0	0
Disposals	0	0
At 31 December	2,770	2,770
Purchased credit card relationships | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	521
At 31 December	451	521
Purchased credit card relationships | Cost | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	1,002	1,002
Additions	0	0
Disposals	0	0
At 31 December	1,002	1,002
Purchased credit card relationships | Accumulated amortisation | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	481	411
Charge for the year (note 9)	70	70
Disposals	0	0
At 31 December	551	481
Customer- related intangibles | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	0
At 31 December	0	0
Customer- related intangibles | Cost | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	50	50
Additions	0	0
Disposals	0	0
At 31 December	50	50
Customer- related intangibles | Accumulated amortisation | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	50	50
Charge for the year (note 9)	0	0
Disposals	0	0
At 31 December	50	50
Capitalised software enhancements | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	2,880
At 31 December	3,281	2,880
Capitalised software enhancements | The Bank
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	2,618
At 31 December	2,960	2,618
Capitalised software enhancements | Cost | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	4,926	3,907
Additions	984	1,029
Disposals	(55)	(10)
At 31 December	5,855	4,926
Capitalised software enhancements | Cost | The Bank
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	4,280	3,306
Additions	857	978
Disposals	(6)	(4)
At 31 December	5,131	4,280
Capitalised software enhancements | Accumulated amortisation | The Group
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	2,046	1,556
Charge for the year (note 9)	583	492
Disposals	(55)	(2)
At 31 December	2,574	2,046
Capitalised software enhancements | Accumulated amortisation | The Bank
OTHER INTANGIBLE ASSETS (Details) - Schedule of Other Intangible Assets [Line Items]
At 1 January	1,662	1,244
Charge for the year (note 9)	515	420
Disposals	(6)	(2)
At 31 December	£ 2,171	£ 1,662

OTHER INTANGIBLE ASSETS (Deta_2

OTHER INTANGIBLE ASSETS (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Brands
OTHER INTANGIBLE ASSETS (Details) - Narrative [Line Items]
Effect of 1% decrease in discount rate utilized (in percent)	£ 50
Brands
OTHER INTANGIBLE ASSETS (Details) - Narrative [Line Items]
Growth rate used to extrapolate cash flow projections (in percent)	2.50%
The Group
OTHER INTANGIBLE ASSETS (Details) - Narrative [Line Items]
Intangible assets	£ 4,112	£ 3,781
The Group | Brands
OTHER INTANGIBLE ASSETS (Details) - Narrative [Line Items]
Effect of 1% decrease in discount rate utilized (in percent)	50
The Group | Brands
OTHER INTANGIBLE ASSETS (Details) - Narrative [Line Items]
Intangible assets	£ 380	£ 380
Discount rate used in current estimate of value in use (in percent)	9.31%
Growth rate used to extrapolate cash flow projections (in percent)	2.50%

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
Expenditure on investment properties (see below)	£ 9	£ 11
The Group
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	9,467
Change in fair value of investment properties (note 7)	(20)	(8)	£ 0
At 31 December	8,317	9,467
The Group | Investment properties
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	15
At 31 December	4	15
The Group | Premises
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	963
At 31 December	866	963
The Group | Equipment
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	2,454
At 31 December	2,055	2,454
The Group | Operating lease assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	4,426
At 31 December	3,958	4,426
The Group | Right-of-use assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	1,609
At 31 December	1,434	1,609
The Bank
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	3,594
At 31 December	3,098	3,594
The Bank | Premises
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	582
At 31 December	541	582
The Bank | Equipment
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	2,144
At 31 December	1,779	2,144
The Bank | Right-of-use assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	868
At 31 December	778	868
Cost or valuation | The Group
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	14,797	14,478
Exchange and other adjustments	1	7
Additions	1,944	2,512
Expenditure on investment properties (see below)	9	11
Change in fair value of investment properties (note 7)	(20)	(8)
Disposals	(2,723)	(2,203)
At 31 December	14,008	14,797	14,478
Cost or valuation | The Group | Investment properties
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	15	35
Exchange and other adjustments	0	0
Additions	0	0
Expenditure on investment properties (see below)	9	11
Change in fair value of investment properties (note 7)	(20)	(8)
Disposals	0	(23)
At 31 December	4	15	35
Cost or valuation | The Group | Premises
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	1,058	1,180
Exchange and other adjustments	1	3
Additions	72	118
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(184)	(243)
At 31 December	947	1,058	1,180
Cost or valuation | The Group | Equipment
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	5,257	4,966
Exchange and other adjustments	0	4
Additions	314	518
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(501)	(231)
At 31 December	5,070	5,257	4,966
Cost or valuation | The Group | Operating lease assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	6,654	6,642
Exchange and other adjustments	0	0
Additions	1,436	1,693
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(1,914)	(1,681)
At 31 December	6,176	6,654	6,642
Cost or valuation | The Group | Right-of-use assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	1,813	1,655
Exchange and other adjustments	0	0
Additions	122	183
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(124)	(25)
At 31 December	1,811	1,813	1,655
Cost or valuation | The Bank
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	8,609	8,425
Exchange and other adjustments	7	21
Additions	433	660
Expenditure on investment properties (see below)		0
Change in fair value of investment properties (note 7)		0
Disposals	(688)	(497)
At 31 December	8,361	8,609	8,425
Cost or valuation | The Bank | Premises
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	1,087	1,275
Exchange and other adjustments	7	21
Additions	42	62
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(113)	(271)
At 31 December	1,023	1,087	1,275
Cost or valuation | The Bank | Equipment
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	6,541	6,267
Exchange and other adjustments	0	0
Additions	287	484
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(472)	(210)
At 31 December	6,356	6,541	6,267
Cost or valuation | The Bank | Right-of-use assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	981	883
Exchange and other adjustments	0	0
Additions	104	114
Expenditure on investment properties (see below)	0	0
Change in fair value of investment properties (note 7)	0	0
Disposals	(103)	(16)
At 31 December	982	981	883
Accumulated depreciation and impairment | The Group
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(5,330)	(4,308)
Exchange and other adjustments	1	(33)
Depreciation charge for the year (note 9)	2,017	2,040
Disposals	1,657	985
At 31 December	(5,691)	(5,330)	(4,308)
Accumulated depreciation and impairment | The Group | Investment properties
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	0	0
Exchange and other adjustments	0	0
Depreciation charge for the year (note 9)	0	0
Disposals	0	0
At 31 December	0	0	0
Accumulated depreciation and impairment | The Group | Premises
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(95)	(199)
Exchange and other adjustments	(1)	0
Depreciation charge for the year (note 9)	124	121
Disposals	137	225
At 31 December	(81)	(95)	(199)
Accumulated depreciation and impairment | The Group | Equipment
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(2,803)	(2,270)
Exchange and other adjustments	2	(1)
Depreciation charge for the year (note 9)	676	710
Disposals	466	176
At 31 December	(3,015)	(2,803)	(2,270)
Accumulated depreciation and impairment | The Group | Operating lease assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(2,228)	(1,839)
Exchange and other adjustments	0	(33)
Depreciation charge for the year (note 9)	1,002	1,006
Disposals	1,012	584
At 31 December	(2,218)	(2,228)	(1,839)
Accumulated depreciation and impairment | The Group | Right-of-use assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(204)	0
Exchange and other adjustments	0	1
Depreciation charge for the year (note 9)	215	203
Disposals	42	0
At 31 December	(377)	(204)	0
Accumulated depreciation and impairment | The Bank
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(5,015)	(4,602)
Exchange and other adjustments	2	11
Depreciation charge for the year (note 9)	810	825
Disposals	564	423
At 31 December	(5,263)	(5,015)	(4,602)
Accumulated depreciation and impairment | The Bank | Premises
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(505)	(687)
Exchange and other adjustments	0	8
Depreciation charge for the year (note 9)	70	67
Disposals	93	257
At 31 December	(482)	(505)	(687)
Accumulated depreciation and impairment | The Bank | Equipment
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(4,397)	(3,915)
Exchange and other adjustments	2	0
Depreciation charge for the year (note 9)	619	648
Disposals	441	166
At 31 December	(4,577)	(4,397)	(3,915)
Accumulated depreciation and impairment | The Bank | Right-of-use assets
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Property, Plant and Equipment [Line Items]
At 1 January	(113)	0
Exchange and other adjustments	0	3
Depreciation charge for the year (note 9)	121	110
Disposals	30	0
At 31 December	£ (204)	£ (113)	£ 0

PROPERTY, PLANT AND EQUIPMENT_3

PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Expenditure on Investment Properties - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [abstract]
Acquisitions of new properties	£ 9	£ 11
Additional expenditure on existing properties	0	0
Expenditure on investment properties	£ 9	£ 11

PROPERTY, PLANT AND EQUIPMENT_4

PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	£ 1,771	£ 2,025
Receivable within 1 year
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	864	977
1 to 2 years
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	548	620
2 to 3 years
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	274	312
3 to 4 years
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	78	102
4 to 5 years
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	7	12
Over 5 years
PROPERTY, PLANT AND EQUIPMENT (Details) - Schedule of Future Minimum Rentals Receivable under Non-Cancellable Operating Leases [Line Items]
Future minimum rentals receivable	£ 0	£ 2

INVESTMENT IN SUBSIDIARY UNDE_3

INVESTMENT IN SUBSIDIARY UNDERTAKINGS OF THE BANK (Details) - Schedule of Investment in Subsidiary Undertakings of the Bank - Subsidiary undertakings of the Bank - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
INVESTMENT IN SUBSIDIARY UNDERTAKINGS OF THE BANK (Details) - Schedule of Investment in Subsidiary Undertakings of the Bank [Line Items]
At 1 January	£ 34,084	£ 32,656
Additions and capital injections	1,055	1,766
Capital contributions	33	53
Capital repayments	(1,801)	(212)
Disposals	(18)	(20)
Impairment	0	(159)
At 31 December	£ 33,353	£ 34,084

OTHER ASSETS (Details) - Schedu

OTHER ASSETS (Details) - Schedule of Other Assets - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
OTHER ASSETS (Details) - Schedule of Other Assets [Line Items]
Settlement balances	£ 202	£ 490
Prepayments	1,030	1,229
Other assets	660	808
Other assets	1,892	2,527
The Bank
OTHER ASSETS (Details) - Schedule of Other Assets [Line Items]
Settlement balances	100	437
Prepayments	443	469
Other assets	211	92
Other assets	£ 754	£ 998

FINANCIAL LIABILITIES AT FAIR_3

FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Liabilities and Fair Value Through Profit or Loss - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Liabilities and Fair Value Through Profit or Loss [Line Items]
Liabilities designated at fair value through profit or loss: debt securities in issue	£ 6,828	£ 7,531
Other deposits	2	98
Short positions in securities	1	73
Financial liabilities at fair value through profit or loss that meet definition of held for trading	3	171
Total financial liabilities at fair value through profit or loss	6,831	7,702
The Bank
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Schedule of Trading and Other Financial Liabilities and Fair Value Through Profit or Loss [Line Items]
Liabilities designated at fair value through profit or loss: debt securities in issue	7,905	7,484
Other deposits	2	140
Short positions in securities	0	73
Financial liabilities at fair value through profit or loss that meet definition of held for trading	2	213
Total financial liabilities at fair value through profit or loss	£ 7,907	£ 7,697

FINANCIAL LIABILITIES AT FAIR_4

FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative [Line Items]
Amount contractually payable	£ 11,503	£ 14,365
Difference between balance sheet carrying value and amount contractually payable	4,675	6,834
Increase in fair value measurement, liabilities	109
Increase in fair value of financial liability, attributable to changes in credit risk of liability	75	419
The Group
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative [Line Items]
Financial liabilities at fair value through profit or loss	6,831	7,702
Liabilities designated at fair value through profit or loss	6,828	7,531
The Group | 1 year or over original maturity
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative [Line Items]
Financial liabilities at fair value through profit or loss	6,682	7,376
The Bank
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative [Line Items]
Financial liabilities at fair value through profit or loss	7,907	7,697
Liabilities designated at fair value through profit or loss	7,905	7,484
The Bank | Debt securities
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative [Line Items]
Liabilities designated at fair value through profit or loss	1,122	0
The Bank | 1 year or over original maturity
FINANCIAL LIABILITIES AT FAIR VALUE THROUGH PROFIT OR LOSS (Details) - Narrative [Line Items]
Financial liabilities at fair value through profit or loss	£ 7,758	£ 7,328

DEBT SECURITIES IN ISSUE (Detai

DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items]
Medium-term notes issued	£ 1,305	£ 1,079
Total debt securities in issue	59,293	76,431
The Group | Before IFRS 9 impairment adjustments
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items]
Medium-term notes issued	21,501	26,628
Covered bonds (note 26)	23,977	29,818
Certificates of deposit issued	3,597	4,925
Securitisation notes (note 26)	4,436	7,329
Commercial paper	5,782	7,731
Total debt securities in issue	59,293	76,431
The Bank
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items]
Medium-term notes issued	0	0
Securitisation notes (note 26)	0	0
Total debt securities in issue	48,109	61,509
The Bank | Before IFRS 9 impairment adjustments
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items]
Medium-term notes issued	19,546	25,603
Covered bonds (note 26)	20,895	25,359
Certificates of deposit issued	3,597	4,925
Commercial paper	4,071	5,622
Total debt securities in issue	£ 48,109	£ 61,509

DEBT SECURITIES IN ISSUE (Det_2

DEBT SECURITIES IN ISSUE (Details) - Narrative - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
DEBT SECURITIES IN ISSUE (Details) - Narrative [Line Items]
Debt instruments issued	£ 59,293	£ 76,431
The Group | 1 year or over original maturity
DEBT SECURITIES IN ISSUE (Details) - Narrative [Line Items]
Debt instruments issued	40,765	41,762
The Bank
DEBT SECURITIES IN ISSUE (Details) - Narrative [Line Items]
Debt instruments issued	48,109	61,509
The Bank | 1 year or over original maturity
DEBT SECURITIES IN ISSUE (Details) - Narrative [Line Items]
Debt instruments issued	£ 33,582	£ 32,152

SECURITISATIONS AND COVERED B_3

SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation notes at fair value through profit or loss	£ 45	£ 47
Loans and advances securitised | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	34,584	42,545
Loans and advances securitised | Covered bond programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	34,960	39,131
Loans and advances securitised | Covered bond programmes | Residential mortgage-backed
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	33,980	37,579
Loans and advances securitised | Covered bond programmes | Social housing loan-backed
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	980	1,552
Loans and advances securitised | UK residential mortgages | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	23,984	25,815
Loans and advances securitised | Commercial loans | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	2,884	5,116
Loans and advances securitised | Credit card receivables | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	5,890	8,164
Loans and advances securitised | Motor vehicle finance | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	1,826	3,450
Notes in issue
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	28,458	37,194
Notes in issue | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	31,899	38,772
Notes in issue | Covered bond programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	24,077	29,918
Notes in issue | Covered bond programmes | Residential mortgage-backed
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	23,477	29,318
Notes in issue | Covered bond programmes | Social housing loan-backed
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	600	600
Notes in issue | UK residential mortgages | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	21,640	23,505
Notes in issue | Commercial loans | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	4,004	6,038
Notes in issue | Credit card receivables | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	4,340	5,767
Notes in issue | Motor vehicle finance | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	1,915	3,462
Notes in issue | Less held by the Group | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	27,418	31,396
Notes in issue | Less held by the Group | Covered bond programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	100	100
Notes in issue | Total securitisation programmes | Securitisation programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	4,481	7,376
Notes in issue | Total covered bond programmes | Covered bond programmes
SECURITISATIONS AND COVERED BONDS (Details) - Schedule of Securitisation and Covered Bond Programmes [Line Items]
Securitisation and covered bond programmes	£ 23,977	£ 29,818

SECURITISATIONS AND COVERED B_4

SECURITISATIONS AND COVERED BONDS (Details) - Narrative - The Group - Securitisation programmes - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
SECURITISATIONS AND COVERED BONDS (Details) - Narrative [Line Items]
Cash deposits held restricted in use to securitisation and covered bonds	£ 3,930	£ 4,703
Maximum exposure to loss from interests in structured entities	£ 52	£ 56

OTHER LIABILITIES (Details) - S

OTHER LIABILITIES (Details) - Schedule of Other Liabilities - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Total other liabilities	£ 5,181	£ 5,600
The Bank
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Total other liabilities	2,573	2,792
Settlement balances | The Group
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Settlement balances	36	274
Settlement balances | The Bank
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Settlement balances	11	9
Lease liabilities | The Group
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Lease liabilities	1,592	1,755
Lease liabilities | The Bank
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Lease liabilities	885	975
Other creditors and accruals | The Group
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Other creditors and accruals	3,553	3,571
Other creditors and accruals | The Bank
OTHER LIABILITIES (Details) - Schedule of Other Liabilities [Line Items]
Other creditors and accruals	£ 1,677	£ 1,808

OTHER LIABILITIES (Details) -_2

OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities - Lease liabilities - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	£ 1,592	£ 1,755
The Group | Not later than 1 year
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	227	238
The Group | Later than 1 year and not later than 2 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	192	220
The Group | Later than 2 years and not later than 3 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	157	192
The Group | Later than 3 years and not later than 4 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	146	156
The Group | Later than 4 years and not later than 5 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	117	156
The Group | Over 5 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	753	793
The Bank
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	885	975
The Bank | Not later than 1 year
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	125	132
The Bank | Later than 1 year and not later than 2 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	102	124
The Bank | Later than 2 years and not later than 3 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	80	106
The Bank | Later than 3 years and not later than 4 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	74	84
The Bank | Later than 4 years and not later than 5 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	57	84
The Bank | Over 5 years
OTHER LIABILITIES (Details) - Schedule of Maturity of Lease Liabilities [Line Items]
Lease liabilities	£ 447	£ 445

RETIREMENT BENEFIT OBLIGATION_2

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Charges to Income Statement - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Charge to the Group income statement
Total charge to the income statement – continuing operations (note 9)	£ 552	£ 518	£ 688
Defined benefit pension schemes
Charge to the Group income statement
Defined benefit scheme charges	244	241	396
Other post-retirement benefit schemes
Charge to the Group income statement
Defined benefit scheme charges	3	4	4
Total defined benefit schemes
Charge to the Group income statement
Defined benefit scheme charges	247	245	400
Defined contribution pension schemes
Charge to the Group income statement
Defined contribution pension schemes	£ 305	£ 273	£ 288

RETIREMENT BENEFIT OBLIGATION_3

RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended				48 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2024	Jan. 28, 2020	Dec. 31, 2016
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Percentage of gross defined benefit pension assets (in percent)		94.00%
Actuarial assumption of retirement age		60 years
Contributions to plan, net defined benefit liability (asset)	£ (1,100)
Past service cost and gains (losses) arising from settlements, net defined benefit liability (asset)		£ 33
Three most significant defined benefit schemes, percentage of total defined benefit obligations (in percent)		90.00%
Defined benefit plan estimated mount of plan participants future benefits covered by insurance contracts						£ 10,000
Hedged percent of defined benefit scheme exposure to increases life expectancy (in percent)						20.00%
Swap fair value at inception						£ 0
Liability sensitivity to interest rate movements (in percent)		105.00%
Liability sensitivity to inflation movements (in percent)		100.00%
Healthcare premiums
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Percentage of reasonably possible increase in actuarial assumption (in percent)		6.40%	6.54%
The group's three main schemes
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Percentage of gross defined benefit pension assets (in percent)			94.00%
The group's three main schemes | Minimum
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Actuarial assumption of retirement age		55 years
The group's three main schemes | Minimum | Contractual right to retire earlier
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Actuarial assumption of retirement age		50 years
Aggregated measurement
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Deficit in plan			£ 7,300				£ 7,300
Defined benefit plan funding level (in percent)			85.70%				85.90%
Contributions to plan, net defined benefit liability (asset)		£ (800)			£ (1,300)
In year capital distributions to shareholders (in percent)		30.00%
Aggregated measurement | Maximum
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Deficit contributions to plan		£ 2,000
Defined benefit pension schemes | LLoyds Bank pension scheme No 1 and No 2 | Limited liability partnerships
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Net defined benefit liability (asset)		6,700
Defined benefit pension schemes | HBOs final salary pension scheme | Limited liability partnerships
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Net defined benefit liability (asset)		4,700
Guaranteed minimum pension benefits
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Past service cost and gains (losses) arising from settlements, net defined benefit liability (asset)			£ 108
Defined contribution pension schemes
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Defined contribution pension schemes		£ 305	£ 273	£ 288
Discontinued operations
RETIREMENT BENEFIT OBLIGATIONS (Details) - Narrative [Line Items]
Pension and other post retirement and post employment benefit plans liabilities				8
Employer contributions				£ 3

RETIREMENT BENEFIT OBLIGATION_4

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefits Recognised in Balance Sheet - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Amounts recognised in the balance sheet
Retirement benefit assets	£ 1,714	£ 681
Retirement benefit obligations	(245)	(257)
The Group | Amount recognized
Amounts recognised in the balance sheet
Retirement benefit assets	1,714	681
Retirement benefit obligations	(245)	(257)
Total amounts recognised in the balance sheet	1,469	424
The Bank
Amounts recognised in the balance sheet
Retirement benefit assets	765	386
Retirement benefit obligations	(106)	(124)
The Bank | Amount recognized
Amounts recognised in the balance sheet
Retirement benefit assets	765	386
Retirement benefit obligations	(106)	(124)
Total amounts recognised in the balance sheet	£ 659	£ 262

RETIREMENT BENEFIT OBLIGATION_5

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet - Amount recognized - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet [Line Items]
Defined benefit schemes	£ 1,469	£ 424
The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet [Line Items]
Defined benefit schemes	659	262
Defined benefit pension schemes | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet [Line Items]
Defined benefit schemes	1,578	550
Defined benefit pension schemes | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet [Line Items]
Defined benefit schemes	727	347
Other post-retirement benefit schemes | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet [Line Items]
Defined benefit schemes	(109)	(126)
Other post-retirement benefit schemes | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Total Amounts Recognized in Balance Sheet [Line Items]
Defined benefit schemes	£ (68)	£ (85)

RETIREMENT BENEFIT OBLIGATION_6

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefits Amounts Recognized in Balance Sheet - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefits Amounts Recognized in Balance Sheet [Line Items]
Present value of funded obligations	£ (49,549)	£ (45,241)	£ (41,092)
Net amount recognised in the balance sheet	1,578	550	1,146
The Group | Net amount recognised in the balance sheet
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefits Amounts Recognized in Balance Sheet [Line Items]
Present value of funded obligations	(49,549)	(45,241)
Fair value of scheme assets	51,127	45,791
The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefits Amounts Recognized in Balance Sheet [Line Items]
Present value of funded obligations	(30,597)	(28,072)	(25,198)
Net amount recognised in the balance sheet	727	347	£ 667
The Bank | Net amount recognised in the balance sheet
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefits Amounts Recognized in Balance Sheet [Line Items]
Present value of funded obligations	(30,597)	(28,072)
Fair value of scheme assets	£ 31,324	£ 28,419

RETIREMENT BENEFIT OBLIGATION_7

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Retirement Benefit Net Amounts Recognized in Balance Sheet - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
Net amount recognised in the balance sheet
At 1 January	£ (550)	£ (1,146)
Net defined benefit pension charge	(244)	(241)
Actuarial losses on defined benefit obligation	(5,443)	(4,958)
Return on plan assets	5,565	3,531
Employer contributions	1,149	1,062
Exchange and other adjustments	1	10
At 31 December	(1,578)	(550)
The Bank
Net amount recognised in the balance sheet
At 1 January	(347)	(667)
Net defined benefit pension charge	(119)	(129)
Actuarial losses on defined benefit obligation	(3,365)	(3,473)
Return on plan assets	3,217	2,700
Employer contributions	647	558
Exchange and other adjustments	0	24
At 31 December	£ (727)	£ (347)

RETIREMENT BENEFIT OBLIGATION_8

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Movements in Defined Benefit Obligation - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
Movements in the defined benefit obligation
At 1 January	£ (45,241)	£ (41,092)
Current service cost	(206)	(201)
Interest expense	(914)	(1,172)
Actuarial gains (losses) – experience	493	(29)
Actuarial (losses) gains – demographic assumptions	(218)	471
Actuarial losses – financial assumptions	(5,718)	(5,400)
Benefits paid	2,254	2,174
Past service cost	(5)	(44)
Settlements	20	17
Exchange and other adjustments	(14)	35
At 31 December	(49,549)	(45,241)
The Bank
Movements in the defined benefit obligation
At 1 January	(28,072)	(25,198)
Current service cost	(97)	(98)
Interest expense	(568)	(737)
Actuarial gains (losses) – experience	441	35
Actuarial (losses) gains – demographic assumptions	(282)	304
Actuarial losses – financial assumptions	(3,524)	(3,812)
Benefits paid	1,504	1,436
Past service cost	(2)	(33)
Settlements	0	0
Exchange and other adjustments	3	31
At 31 December	£ (30,597)	£ (28,072)

RETIREMENT BENEFIT OBLIGATION_9

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Analysis of Defined Benefit Obligations - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	£ (49,549)	£ (45,241)	£ (41,092)
The Bank
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(30,597)	(28,072)	£ (25,198)
Active members | The Group
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(6,550)	(6,413)
Active members | The Bank
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(3,415)	(3,433)
Deferred members | The Group
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(17,647)	(16,058)
Deferred members | The Bank
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(10,493)	(9,679)
Pensioners | The Group
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(23,409)	(21,032)
Pensioners | The Bank
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(15,311)	(13,714)
Dependants | The Group
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	(1,943)	(1,738)
Dependants | The Bank
Analysis of the defined benefit obligation:
Defined benefit obligation, at present value	£ (1,378)	£ (1,246)

RETIREMENT BENEFIT OBLIGATIO_10

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Change in Fair Value of Scheme Assets - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
Changes in the fair value of scheme assets
Interest income	£ 914	£ 1,172
Employer contributions	1,149	1,062
Exchange and other adjustments	1	10
The Bank
Changes in the fair value of scheme assets
Interest income	568	737
Employer contributions	647	558
Exchange and other adjustments	0	24
Post employment retirement benefits | The Group
Changes in the fair value of scheme assets
At 1 January	45,791	42,238
Return on plan assets excluding amounts included in interest income	5,565	3,531
Interest income	937	1,220
Employer contributions	1,149	1,062
Benefits paid	(2,254)	(2,174)
Settlements	(22)	(18)
Administrative costs paid	(54)	(43)
Exchange and other adjustments	15	(25)
At 31 December	51,127	45,791
Post employment retirement benefits | The Bank
Changes in the fair value of scheme assets
At 1 January	28,419	25,865
Return on plan assets excluding amounts included in interest income	3,217	2,700
Interest income	581	765
Employer contributions	647	558
Benefits paid	(1,504)	(1,436)
Settlements	0	0
Administrative costs paid	(33)	(26)
Exchange and other adjustments	(3)	(7)
At 31 December	£ 31,324	£ 28,419

RETIREMENT BENEFIT OBLIGATIO_11

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Defined Benefit Pension Expense - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Defined Benefit Pension Expense [Line Items]
Charge for the year	£ (206)	£ (201)
Net interest amount	(914)	(1,172)
Past service cost – plan amendments	(5)	(44)
Total defined benefit pension expense	244	241
Defined contribution pension schemes
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Defined Benefit Pension Expense [Line Items]
Charge for the year	206	201	£ 257
Net interest amount	(23)	(48)	(22)
Past service credits and curtailments	0	0	12
Settlements	2	1	1
Past service cost – plan amendments	5	44	108
Plan administration costs incurred during the year	54	43	40
Total defined benefit pension expense	£ 244	£ 241	£ 396

RETIREMENT BENEFIT OBLIGATIO_12

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Investment grade
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Defined benefit scheme fair value of scheme assets	£ 39,439	£ 33,134
Debt instruments, amount contributed to fair value of plan assets	21,938	18,724
The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Net carrying amount	5,137	5,325
Property	8,317	9,467
The Group | Retirement scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Equity instruments	661	594
Fixed interest government bonds	11,328	8,893
Index-linked government bonds	21,058	18,207
Corporate and other debt securities	12,736	10,588
Net carrying amount	45,122	37,688
Property	136	158
Pooled investment vehicles	13,672	15,358
Money market instruments, cash, derivatives, and other assets and liabilities	(8,464)	(8,007)
At 31 December	51,127	45,791
The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Net carrying amount	4,315	5,241
Property	3,098	3,594
The Bank | Retirement scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Equity instruments	457	411
Fixed interest government bonds	4,591	3,198
Index-linked government bonds	12,638	11,254
Corporate and other debt securities	7,878	6,791
Net carrying amount	25,107	21,243
Pooled investment vehicles	8,693	9,730
Money market instruments, cash, derivatives, and other assets and liabilities	(2,933)	(2,965)
At 31 December	31,324	28,419
Quoted | The Group | Retirement scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Equity instruments	616	555
Fixed interest government bonds	11,328	8,893
Index-linked government bonds	21,058	18,207
Corporate and other debt securities	12,736	10,588
Net carrying amount	45,122	37,688
Property	0	0
Pooled investment vehicles	650	4,773
Money market instruments, cash, derivatives, and other assets and liabilities	812	204
At 31 December	47,200	43,220
Quoted | The Bank | Retirement scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Equity instruments	423	385
Fixed interest government bonds	4,591	3,198
Index-linked government bonds	12,638	11,254
Corporate and other debt securities	7,878	6,791
Net carrying amount	25,107	21,243
Pooled investment vehicles	124	2,527
Money market instruments, cash, derivatives, and other assets and liabilities	365	(145)
At 31 December	26,019	24,010
Unquoted | The Group | Retirement scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Equity instruments	45	39
Fixed interest government bonds	0	0
Index-linked government bonds	0	0
Corporate and other debt securities	0	0
Net carrying amount	0	0
Property	136	158
Pooled investment vehicles	13,022	10,585
Money market instruments, cash, derivatives, and other assets and liabilities	(9,276)	(8,211)
At 31 December	3,927	2,571
Unquoted | The Bank | Retirement scheme assets
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Composition of Scheme Assets [Line Items]
Equity instruments	34	26
Fixed interest government bonds	0	0
Index-linked government bonds	0	0
Corporate and other debt securities	0	0
Net carrying amount	0	0
Pooled investment vehicles	8,569	7,203
Money market instruments, cash, derivatives, and other assets and liabilities	(3,298)	(2,820)
At 31 December	£ 5,305	£ 4,409

RETIREMENT BENEFIT OBLIGATIO_13

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	£ 13,672	£ 15,358
The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	8,693	9,730
Equity funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	3,169	2,429
Equity funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	2,044	1,706
Hedge and mutual funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	2,181	2,886
Hedge and mutual funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	1,427	1,818
Alternative credit funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	4,072	4,716
Alternative credit funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	2,620	3,061
Property funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	1,551	1,536
Property funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	1,100	1,127
Infrastructure funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	1,405	1,648
Infrastructure funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	620	827
Liquidity funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	847	1,126
Liquidity funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	598	980
Bond and debt funds | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	396	971
Bond and debt funds | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	284	211
Other | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	51	46
Other | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Pension Scheme's Pooled Investment Vehicles [Line Items]
Pooled investment vehicle	£ 0	£ 0

RETIREMENT BENEFIT OBLIGATIO_14

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Principal Actuarial and Financial Assumptions Used in Valuation of Defined Benefit Pension Schemes	Dec. 31, 2020	Dec. 31, 2019
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Principal Actuarial and Financial Assumptions Used in Valuation of Defined Benefit Pension Schemes [Line Items]
Discount rate (in percent)	1.44%	2.05%
Rate of inflation:
Rate of salary increases (in percent)	0.00%	0.00%
Weighted-average rate of increase for pensions in payment (in percent)	2.61%	2.57%
Retail Price Index (RPI)
Rate of inflation:
Prices index (in percent)	2.80%	2.94%
Consumer Price Index (CPI)
Rate of inflation:
Prices index (in percent)	2.41%	1.99%

RETIREMENT BENEFIT OBLIGATIO_15

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Benefit Plan Member Life Expectancy	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Men | On valuation date
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Benefit Plan Member Life Expectancy [Line Items]
Actuarial assumption of life expectancy after retirement	27 years	27 years 6 months
Men | 15 Years after valuation date
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Benefit Plan Member Life Expectancy [Line Items]
Actuarial assumption of life expectancy after retirement	28 years 1 month 6 days	28 years 6 months
Women | On valuation date
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Benefit Plan Member Life Expectancy [Line Items]
Actuarial assumption of life expectancy after retirement	29 years	29 years 2 months 12 days
Women | 15 Years after valuation date
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Benefit Plan Member Life Expectancy [Line Items]
Actuarial assumption of life expectancy after retirement	30 years 2 months 12 days	30 years 3 months 18 days

RETIREMENT BENEFIT OBLIGATIO_16

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Discount rate (in percent)	1.44%	2.05%
Retail Price Index (RPI)
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Prices index (in percent)	2.80%	2.94%
Consumer Price Index (CPI)
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Prices index (in percent)	2.41%	1.99%
Increase of 0.1 per cent | Actuarial assumption of expected rates of inflation | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	£ 11	£ 12
Increase (decrease) in the net defined benefit pension scheme liability	531	467
Increase of 0.1 per cent | Actuarial assumption of expected rates of inflation | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	6	7
Increase (decrease) in the net defined benefit pension scheme liability	337	302
Increase of 0.1 per cent | Actuarial assumption of discount rates | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	(20)	(20)
Increase (decrease) in the net defined benefit pension scheme liability	(866)	(763)
Increase of 0.1 per cent | Actuarial assumption of discount rates | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	(12)	(11)
Increase (decrease) in the net defined benefit pension scheme liability	(534)	(471)
Decrease of 0.1 per cent | Actuarial assumption of expected rates of inflation | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	(11)	(12)
Increase (decrease) in the net defined benefit pension scheme liability	(522)	(460)
Decrease of 0.1 per cent | Actuarial assumption of expected rates of inflation | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	(6)	(7)
Increase (decrease) in the net defined benefit pension scheme liability	(332)	(296)
Decrease of 0.1 per cent | Actuarial assumption of discount rates | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	19	21
Increase (decrease) in the net defined benefit pension scheme liability	(890)	(784)
Decrease of 0.1 per cent | Actuarial assumption of discount rates | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	11	12
Increase (decrease) in the net defined benefit pension scheme liability	(548)	(484)
Increase of one year | Actuarial assumption of expected life expectancy of members | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	39	40
Increase (decrease) in the net defined benefit pension scheme liability	(2,146)	(1,636)
Increase of one year | Actuarial assumption of expected life expectancy of members | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	23	24
Increase (decrease) in the net defined benefit pension scheme liability	(1,370)	(1,038)
Decrease of one year | Actuarial assumption of expected life expectancy of members | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	(37)	(39)
Increase (decrease) in the net defined benefit pension scheme liability	(2,052)	(1,575)
Decrease of one year | Actuarial assumption of expected life expectancy of members | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Possible Alternative Assumptions Used in Valuations of Defined Benefit Pension Schemes [Line Items]
Increase (decrease) in the income statement charge	(23)	(23)
Increase (decrease) in the net defined benefit pension scheme liability	£ (1,310)	£ (1,000)

RETIREMENT BENEFIT OBLIGATIO_17

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Weighted Average Duration of Defined Benefit Pension Obligations	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Weighted Average Duration of Defined Benefit Pension Obligations [Line Items]
Duration of the defined benefit obligation	19 years	18 years
The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Weighted Average Duration of Defined Benefit Pension Obligations [Line Items]
Duration of the defined benefit obligation	17 years	16 years

RETIREMENT BENEFIT OBLIGATIO_18

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group | Within 12 months
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	£ 1,293	£ 1,274
The Group | Between 1 and 2 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	1,350	1,373
The Group | Between 2 and 5 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	4,347	4,455
The Group | Between 5 and 10 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	8,301	8,426
The Group | Between 10 and 15 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	9,093	9,229
The Group | Between 15 and 25 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	17,485	17,400
The Group | Between 25 and 35 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	13,479	13,999
The Group | Between 35 and 45 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	7,162	8,291
The Group | In more than 45 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	2,287	3,160
The Bank | Within 12 months
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	914	892
The Bank | Between 1 and 2 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	940	963
The Bank | Between 2 and 5 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	2,989	3,086
The Bank | Between 5 and 10 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	5,547	5,673
The Bank | Between 10 and 15 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	5,796	5,962
The Bank | Between 15 and 25 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	10,590	10,603
The Bank | Between 25 and 35 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	7,709	8,044
The Bank | Between 35 and 45 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	3,645	4,266
The Bank | In more than 45 years
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items]
Benefits expected to be paid	£ 874	£ 1,208

RETIREMENT BENEFIT OBLIGATIO_19

RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Movements in Other Post-Retirement Benefits Obligation - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Movements in Other Post-Retirement Benefits Obligation [Line Items]
Actuarial gains (losses)	£ (5,443)	£ (4,958)
Charge for the year	(206)	(201)
Exchange and other adjustments	1	10
The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Movements in Other Post-Retirement Benefits Obligation [Line Items]
Actuarial gains (losses)	(3,365)	(3,473)
Charge for the year	(97)	(98)
Exchange and other adjustments	0	24
Other post retirement benefit plans, defined benefit | The Group
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Movements in Other Post-Retirement Benefits Obligation [Line Items]
At 1 January	(126)	(124)
Actuarial gains (losses)	16	(6)
Insurance premiums paid	4	7
Charge for the year	(3)	(4)
Exchange and other adjustments	0	1
At 31 December	(109)	(126)
Other post retirement benefit plans, defined benefit | The Bank
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Movements in Other Post-Retirement Benefits Obligation [Line Items]
At 1 January	(85)	(84)
Actuarial gains (losses)	15	(3)
Insurance premiums paid	3	5
Charge for the year	(2)	(2)
Exchange and other adjustments	1	(1)
At 31 December	£ (68)	£ (85)

DEFERRED TAX (Details) - Schedu

DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure [Line Items]
Deferred tax assets	£ 3,468	£ 3,366
The Group | Statutory position
DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure [Line Items]
Deferred tax assets	3,468	3,366
Deferred tax liabilities	0	0
Net deferred tax asset	3,468	3,366
The Group | Tax disclosure
DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure [Line Items]
Deferred tax assets	5,327	4,731
Deferred tax liabilities	(1,859)	(1,365)
Net deferred tax asset	3,468	3,366
The Bank
DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure [Line Items]
Deferred tax assets	2,109	2,029
The Bank | Statutory position
DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure [Line Items]
Deferred tax assets	2,109	2,029
Deferred tax liabilities	0	0
Net deferred tax asset	2,109	2,029
The Bank | Tax disclosure
DEFERRED TAX (Details) - Schedule of Statutory Position and Tax Disclosure [Line Items]
Deferred tax assets	3,042	2,734
Deferred tax liabilities	(933)	(705)
Net deferred tax asset	£ 2,109	£ 2,029

DEFERRED TAX (Details) - Narrat

DEFERRED TAX (Details) - Narrative - GBP (£)	Mar. 03, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DEFERRED TAX (Details) - Narrative [Line Items]
Income statement, effect of remeasurement of deferred tax utilisation		£ 435,000,000
Other comphrensive income, effect of remeasurement of deferred tax utilisation		£ 50,000,000
Write-off on capital tax losses (in percent)		50.00%
UK corporation tax
DEFERRED TAX (Details) - Narrative [Line Items]
Current tax expense (income)		£ 423,000,000	£ 1,279,000,000	£ 1,108,000,000
Foreign country
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets		£ 0
Trading losses
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets, expiration term		20 years
The Group
DEFERRED TAX (Details) - Narrative [Line Items]
Decrease in net deferred tax assets		£ 0
Deferred tax assets		3,468,000,000	3,366,000,000
The Group | UK corporation tax
DEFERRED TAX (Details) - Narrative [Line Items]
Other comphrensive income, effect of remeasurement of deferred tax utilisation		16,000,000
Increase in deferred tax asset		16,000,000
The Group | UK
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets operating loss carry forwards not subject to expiration		104,000,000	111,000,000
Current tax expense (income)		532,000,000
The Group | Foreign country
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets operating loss carry forwards not subject to expiration		46,000,000	46,000,000
The Group | Trading losses
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets operating loss carry forwards not subject to expiration		43,000,000	45,000,000
Deferred tax assets operating loss carry forwards subject to expiration		34,000,000	35,000,000
The Bank
DEFERRED TAX (Details) - Narrative [Line Items]
Decrease in net deferred tax assets		7,000,000
Deferred tax assets		2,109,000,000	2,029,000,000
The Bank | UK corporation tax
DEFERRED TAX (Details) - Narrative [Line Items]
Other comphrensive income, effect of remeasurement of deferred tax utilisation		4,000,000
Increase in deferred tax asset		3,000,000
The Bank | UK
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets operating loss carry forwards not subject to expiration		90,000,000	84,000,000
Current tax expense (income)		460,000,000
The Bank | Foreign country
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets operating loss carry forwards not subject to expiration		7,000,000	7,000,000
The Bank | Trading losses
DEFERRED TAX (Details) - Narrative [Line Items]
Deferred tax assets operating loss carry forwards not subject to expiration		4,000,000	5,000,000
Deferred tax assets operating loss carry forwards subject to expiration		£ 0	£ 0
Current year
DEFERRED TAX (Details) - Narrative [Line Items]
Applicable tax rate (in percent)	19.00%	19.00%
1 April 2020
DEFERRED TAX (Details) - Narrative [Line Items]
Applicable tax rate (in percent)		17.00%
1 April 2023
DEFERRED TAX (Details) - Narrative [Line Items]
Applicable tax rate (in percent)		25.00%
31 December 2020 | UK | UK corporation tax | Changes in tax rates or tax laws enacted or announced [member]
DEFERRED TAX (Details) - Narrative [Line Items]
Tax effect from change in tax rate	£ 900,000,000

DEFERRED TAX (Details) - Sche_2

DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	£ 3,366
Deferred tax assets, at 31 December	3,468	£ 3,366
The Bank
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	2,029
Deferred tax assets, at 31 December	2,109	2,029
Prior to offsetting of balances within same taxing jurisdiction | The Group
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	4,731	4,774
(Charge) credit to the income statement	577	(233)
Credit to other comprehensive income	19	190
Deferred tax assets, at 31 December	5,327	4,731
Deferred tax liabilities, at 1 January	(1,365)	(1,552)
(Charge) credit to the income statement	(359)	181
(Charge) credit to other comprehensive income	(136)	8
Exchange and other adjustments	1	(2)
Deferred tax liabilities, at 31 December	(1,859)	(1,365)
Prior to offsetting of balances within same taxing jurisdiction | The Group | Tax losses
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	3,600	3,783
(Charge) credit to the income statement	454	(183)
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	4,054	3,600
Prior to offsetting of balances within same taxing jurisdiction | The Group | Property, plant and equipment
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	670	682
(Charge) credit to the income statement	8	(12)
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	678	670
Prior to offsetting of balances within same taxing jurisdiction | The Group | Pension liabilities
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	53	79
(Charge) credit to the income statement	6	(100)
Credit to other comprehensive income	(3)	74
Deferred tax assets, at 31 December	56	53
Prior to offsetting of balances within same taxing jurisdiction | The Group | Provisions
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	225	196
(Charge) credit to the income statement	4	(87)
Credit to other comprehensive income	22	116
Deferred tax assets, at 31 December	251	225
Prior to offsetting of balances within same taxing jurisdiction | The Group | Share-based payments
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	32	28
(Charge) credit to the income statement	(5)	4
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	27	32
Prior to offsetting of balances within same taxing jurisdiction | The Group | Derivatives
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	19	0
(Charge) credit to the income statement	(12)	19
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	7	19
Deferred tax liabilities, at 1 January	(562)	(388)
(Charge) credit to the income statement	(106)	(34)
(Charge) credit to other comprehensive income	(31)	(140)
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(699)	(562)
Prior to offsetting of balances within same taxing jurisdiction | The Group | Assets revaluations
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	0	0
(Charge) credit to the income statement	28	0
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	28	0
Deferred tax liabilities, at 1 January	(38)	(101)
(Charge) credit to the income statement	(22)	(21)
(Charge) credit to other comprehensive income	60	84
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	0	(38)
Prior to offsetting of balances within same taxing jurisdiction | The Group | Other temporary differences
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	132	6
(Charge) credit to the income statement	94	126
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	226	132
Deferred tax liabilities, at 1 January	(111)	(56)
(Charge) credit to the income statement	(94)	(53)
(Charge) credit to other comprehensive income	0	0
Exchange and other adjustments	1	(2)
Deferred tax liabilities, at 31 December	(204)	(111)
Prior to offsetting of balances within same taxing jurisdiction | The Group | Capitalised software enhancements
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(21)	(36)
(Charge) credit to the income statement	(207)	15
(Charge) credit to other comprehensive income	0	0
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(228)	(21)
Prior to offsetting of balances within same taxing jurisdiction | The Group | Acquisition fair value
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(483)	(698)
(Charge) credit to the income statement	147	215
(Charge) credit to other comprehensive income	0	0
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(336)	(483)
Prior to offsetting of balances within same taxing jurisdiction | The Group | Pension assets
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(150)	(273)
(Charge) credit to the income statement	(77)	59
(Charge) credit to other comprehensive income	(165)	64
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(392)	(150)
Prior to offsetting of balances within same taxing jurisdiction | The Bank
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	2,734	2,763
(Charge) credit to the income statement	290	(205)
Credit to other comprehensive income	18	176
Deferred tax assets, at 31 December	3,042	2,734
Deferred tax liabilities, at 1 January	(705)	(779)
(Charge) credit to the income statement	(194)	69
(Charge) credit to other comprehensive income	(35)	0
Exchange and other adjustments	1	5
Deferred tax liabilities, at 31 December	(933)	(705)
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Tax losses
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	2,198	2,284
(Charge) credit to the income statement	309	(86)
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	2,507	2,198
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Property, plant and equipment
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	343	375
(Charge) credit to the income statement	(38)	(32)
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	305	343
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Pension liabilities
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	33	30
(Charge) credit to the income statement	1	(57)
Credit to other comprehensive income	(4)	60
Deferred tax assets, at 31 December	30	33
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Provisions
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	128	53
(Charge) credit to the income statement	10	(41)
Credit to other comprehensive income	22	116
Deferred tax assets, at 31 December	160	128
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Share-based payments
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	19	20
(Charge) credit to the income statement	(1)	(1)
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	18	19
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Derivatives
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(536)	(431)
(Charge) credit to the income statement	1	0
(Charge) credit to other comprehensive income	30	(105)
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(505)	(536)
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Assets revaluations
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(36)	(103)
(Charge) credit to the income statement	(9)	(19)
(Charge) credit to other comprehensive income	40	86
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(5)	(36)
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Other temporary differences
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax assets, at 1 January	13	1
(Charge) credit to the income statement	9	12
Credit to other comprehensive income	0	0
Deferred tax assets, at 31 December	22	13
Deferred tax liabilities, at 1 January	(17)	(38)
(Charge) credit to the income statement	12	17
(Charge) credit to other comprehensive income	0	(1)
Exchange and other adjustments	1	5
Deferred tax liabilities, at 31 December	(4)	(17)
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Capitalised software enhancements
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(19)	(31)
(Charge) credit to the income statement	(193)	12
(Charge) credit to other comprehensive income	0	0
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	(212)	(19)
Prior to offsetting of balances within same taxing jurisdiction | The Bank | Pension assets
DEFERRED TAX (Details) - Schedule of Movements in Deferred Tax Liabilities and Assets [Line Items]
Deferred tax liabilities, at 1 January	(97)	(176)
(Charge) credit to the income statement	(5)	59
(Charge) credit to other comprehensive income	(105)	20
Exchange and other adjustments	0	0
Deferred tax liabilities, at 31 December	£ (207)	£ (97)

OTHER PROVISIONS (Details) - Sc

OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions - GBP (£) £ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020
The Group
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		£ 3,138
At 31 December	£ 1,722	1,722
The Bank
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		1,436
At 31 December	968	968
Provisions for financial commitments and guarantees | The Group
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		173
Exchange and other adjustments		0
Provisions applied		0
Charge for the year		253
At 31 December	426	426
Provisions for financial commitments and guarantees | The Bank
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		90
Exchange and other adjustments		0
Provisions applied		0
Charge for the year		155
At 31 December	245	245
Payment protection insurance | The Group
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		1,874
Exchange and other adjustments		0
Provisions applied		(1,700)
Charge for the year	85	85
At 31 December	259	259
Payment protection insurance | The Bank
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		622
Exchange and other adjustments		0
Provisions applied		(726)
Charge for the year		169
At 31 December	65	65
Other regulatory provisions | The Group
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		395
Exchange and other adjustments		2
Provisions applied		(465)
Charge for the year		329
At 31 December	261	261
Other regulatory provisions | The Bank
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		161
Exchange and other adjustments		4
Provisions applied		(233)
Charge for the year		143
At 31 December	75	75
Other | The Group
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		696
Exchange and other adjustments		0
Provisions applied		(190)
Charge for the year		270
At 31 December	776	776
Other | The Bank
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		563
Exchange and other adjustments		2
Provisions applied		(148)
Charge for the year		166
At 31 December	583	583
Miscellaneous other provisions | The Group
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		3,138
Exchange and other adjustments		2
Provisions applied		(2,355)
Charge for the year		937
At 31 December	1,722	1,722
Miscellaneous other provisions | The Bank
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
At 1 January		1,436
Exchange and other adjustments		6
Provisions applied		(1,107)
Charge for the year		633
At 31 December	£ 968	£ 968

OTHER PROVISIONS (Details) - Na

OTHER PROVISIONS (Details) - Narrative - The Group £ in Millions	3 Months Ended	12 Months Ended		24 Months Ended
	Dec. 31, 2020GBP (£)enquiries	Dec. 31, 2020GBP (£)enquiries	Dec. 31, 2019GBP (£)	Dec. 31, 2020GBP (£)enquiries
OTHER PROVISIONS (Details) - Narrative [Line Items]
Other provisions	£ 1,722	£ 1,722	£ 3,138	£ 1,722
Restructuring provision	£ 196	196	114	£ 196
HBOS
OTHER PROVISIONS (Details) - Narrative [Line Items]
Value of offers after compensation assessment		£ 159	109
Ex gratia payments			15
Payments in respect of settlements, reimbursement rights			6
Percent of accepted offers after compensation assessment (in percent)	98.00%	98.00%		98.00%
Lifetime cost of legal claim				£ 435
Payment protection insurance
OTHER PROVISIONS (Details) - Narrative [Line Items]
Charge for the year	£ 85	£ 85
Number of pre-deadline customer complaints | enquiries	6,000,000	6,000,000		6,000,000
Percentage of pre-deadline customer complaints dealt with (in percent)	99.00%	99.00%		99.00%
Other provisions	£ 259	£ 259	1,874	£ 259
Provision used, other provisions		1,700
Other regulatory provisions
OTHER PROVISIONS (Details) - Narrative [Line Items]
Charge for the year		329
Other provisions	261	261	395	261
Provision used, other provisions		465
Arreas handling
OTHER PROVISIONS (Details) - Narrative [Line Items]
Other provisions	62	62		62
Arreas handling | Management fees and activities
OTHER PROVISIONS (Details) - Narrative [Line Items]
Charge for the year		35
Total arrears handling to date		1,016
Relating to the transitional service agreement | TSB Banking Group plc
OTHER PROVISIONS (Details) - Narrative [Line Items]
Other provisions	111	111		111
Total TSB various ongoing commitments to date today		665
Indemnities and other matters relating to legacy business disposals
OTHER PROVISIONS (Details) - Narrative [Line Items]
Other provisions	112	112	118	112
Payment protection insurance
OTHER PROVISIONS (Details) - Narrative [Line Items]
Total payment protection insurance to date		21,906
Other provisions	198	198		198
Provision used, other provisions		1,459
Maximum exposure to credit risk	240	240		240
Increase in exposure to credit risk		0
Payment protection insurance | Payment Protection Insurance, MBNA
OTHER PROVISIONS (Details) - Narrative [Line Items]
Other provisions	£ 61	61	£ 302	£ 61
Provision used, other provisions		£ 241

SUBORDINATED LIABILITIES (Detai

SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020GBP (£)	Dec. 31, 2019GBP (£)	Dec. 31, 2018GBP (£)	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.42%	2.25%	2.74%	2.42%	2.42%
At 1 January	£ 12,586,000,000
At 31 December		£ 12,586,000,000
The Group
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	12,586,000,000	12,745,000,000
Issued during the year:	303,000,000	780,000,000	£ 201,000,000
Increase due to issuance of subordinated liabilities	1,067,000,000	780,000,000
Repurchases and redemptions during the year	(4,156,000,000)	(762,000,000)
Decrease through repurchases and redemptions	4,748,000,000	762,000,000
Foreign exchange movements	61,000,000	(395,000,000)
Other movements (all non-cash)	(276,000,000)	(218,000,000)
At 31 December	£ 9,242,000,000	12,586,000,000	12,745,000,000
The Group | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	4.1378%			4.1378%	4.1378%
Issued during the year:		492,000,000
The Group | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.68229%			2.68229%	2.68229%
Issued during the year:		70,000,000
The Group | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.0367%			2.0367%	2.0367%
Issued during the year:		218,000,000
The Group | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	13.00%			13.00%	13.00%
Repurchases and redemptions during the year		(49,000,000)
The Group | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(135,000,000)
The Group | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	10.375%			10.375%	10.375%
The Group | 9.375% Subordinated Bonds 2021
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	9.375%			9.375%	9.375%
Repurchases and redemptions during the year		(328,000,000)
The Group | 6.375% Subordinated Instruments 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	6.375%			6.375%	6.375%
Repurchases and redemptions during the year		(250,000,000)
The Group | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	£ 303,000,000
The Group | 2.6787% Fixed rate bond due 2025 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.6787%			2.6787%	2.6787%
The Group | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount	£ 914,633,000,000,000
Issued during the year:	£ 471,000,000
The Group | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.73%			2.73%	2.73%
The Group | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount	£ 393,939,000,000,000
Issued during the year:	£ 293,000,000
The Group | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.61%			2.61%	2.61%
The Group | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount | $				$ 2,000
Repurchases and redemptions during the year	£ (119,000,000)
The Group | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million) | Fixed to floating interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	12.00%			12.00%	12.00%
The Group | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	13.00%			13.00%	13.00%
Notional amount	£ 700,000,000
Repurchases and redemptions during the year	£ (519,000,000)
The Group | 7.281% Perpetual Regulatory Tier One Securities (Series B) (£150 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	7.281%			7.281%	7.281%
Notional amount	£ 150,000,000
Repurchases and redemptions during the year	£ (123,000,000)
The Group | 6.85% Non-cumulative Perpetual Preferred Securities (US$1,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	6.85%			6.85%	6.85%
Notional amount | $				$ 1,000
Repurchases and redemptions during the year	£ (580,000,000)
The Group | 7.881% Guaranteed Non-voting Non-cumulative Preferred Securities (£245 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	7.881%			7.881%	7.881%
Notional amount	£ 245,000,000
Repurchases and redemptions during the year	(289,000,000)
The Group | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(1,464,000,000)
The Group | 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount | €					€ 309
Repurchases and redemptions during the year	£ (276,000,000)
The Group | 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million) | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	4.50%			4.50%	4.50%
The Group | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	£ (370,000,000)
The Group | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(674,000,000)
The Group | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(90,000,000)
The Group | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	£ (240,000,000)
The Group | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	7.375%			7.375%	7.375%
Repurchases and redemptions during the year	£ (4,000,000)
The Group | Preferred securities
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	3,267,000,000	3,210,000,000
Increase due to issuance of subordinated liabilities	0	0
Decrease through repurchases and redemptions	1,630,000,000	49,000,000
Foreign exchange movements	(59,000,000)	(83,000,000)
Other movements (all non-cash)	(194,000,000)	(189,000,000)
At 31 December	1,772,000,000	3,267,000,000	3,210,000,000
The Group | Preferred securities | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Group | Preferred securities | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Group | Preferred securities | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Group | Preferred securities | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(49,000,000)
The Group | Preferred securities | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Preferred securities | 9.375% Subordinated Bonds 2021
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Preferred securities | 6.375% Subordinated Instruments 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Preferred securities | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Group | Preferred securities | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Group | Preferred securities | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Group | Preferred securities | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(119,000,000)
The Group | Preferred securities | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(519,000,000)
The Group | Preferred securities | 7.281% Perpetual Regulatory Tier One Securities (Series B) (£150 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(123,000,000)
The Group | Preferred securities | 6.85% Non-cumulative Perpetual Preferred Securities (US$1,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(580,000,000)
The Group | Preferred securities | 7.881% Guaranteed Non-voting Non-cumulative Preferred Securities (£245 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(289,000,000)
The Group | Preferred securities | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Preferred securities | 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Preferred securities | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Preferred securities | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Preferred securities | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Preferred securities | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Preferred securities | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	516,000,000	529,000,000
Increase due to issuance of subordinated liabilities	0	0
Decrease through repurchases and redemptions	0	0
Foreign exchange movements	15,000,000	(36,000,000)
Other movements (all non-cash)	26,000,000	(23,000,000)
At 31 December	505,000,000	516,000,000	529,000,000
The Group | Undated subordinated liabilities | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Group | Undated subordinated liabilities | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Group | Undated subordinated liabilities | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Group | Undated subordinated liabilities | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Undated subordinated liabilities | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Undated subordinated liabilities | 9.375% Subordinated Bonds 2021
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Undated subordinated liabilities | 6.375% Subordinated Instruments 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Undated subordinated liabilities | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Group | Undated subordinated liabilities | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Group | Undated subordinated liabilities | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Group | Undated subordinated liabilities | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 7.281% Perpetual Regulatory Tier One Securities (Series B) (£150 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 6.85% Non-cumulative Perpetual Preferred Securities (US$1,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 7.881% Guaranteed Non-voting Non-cumulative Preferred Securities (£245 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Undated subordinated liabilities | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Dated subordinated liabilities
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	8,803,000,000	9,006,000,000
Increase due to issuance of subordinated liabilities	1,067,000,000	780,000,000
Decrease through repurchases and redemptions	3,118,000,000	713,000,000
Foreign exchange movements	105,000,000	(276,000,000)
Other movements (all non-cash)	(108,000,000)	(6,000,000)
At 31 December	6,965,000,000	8,803,000,000	9,006,000,000
The Group | Dated subordinated liabilities | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		492,000,000
The Group | Dated subordinated liabilities | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		70,000,000
The Group | Dated subordinated liabilities | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		218,000,000
The Group | Dated subordinated liabilities | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Group | Dated subordinated liabilities | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(135,000,000)
The Group | Dated subordinated liabilities | 9.375% Subordinated Bonds 2021
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(328,000,000)
The Group | Dated subordinated liabilities | 6.375% Subordinated Instruments 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(250,000,000)
The Group | Dated subordinated liabilities | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	303,000,000
The Group | Dated subordinated liabilities | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	471,000,000
The Group | Dated subordinated liabilities | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	293,000,000
The Group | Dated subordinated liabilities | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Dated subordinated liabilities | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Dated subordinated liabilities | 7.281% Perpetual Regulatory Tier One Securities (Series B) (£150 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Dated subordinated liabilities | 6.85% Non-cumulative Perpetual Preferred Securities (US$1,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Dated subordinated liabilities | 7.881% Guaranteed Non-voting Non-cumulative Preferred Securities (£245 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Group | Dated subordinated liabilities | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(1,464,000,000)
The Group | Dated subordinated liabilities | 4.50% Fixed Rate Step-up Subordinated Notes due 2030 (€309 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(276,000,000)
The Group | Dated subordinated liabilities | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(370,000,000)
The Group | Dated subordinated liabilities | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(674,000,000)
The Group | Dated subordinated liabilities | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(90,000,000)
The Group | Dated subordinated liabilities | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(240,000,000)
The Group | Dated subordinated liabilities | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(4,000,000)
The Bank
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	9,909,000,000	9,528,000,000
Issued during the year:	496,000,000	780,000,000	0
Increase due to issuance of subordinated liabilities	1,214,000,000	780,000,000
Repurchases and redemptions during the year	(2,726,000,000)	(184,000,000)
Decrease through repurchases and redemptions	3,480,000,000	184,000,000
Foreign exchange movements	(3,000,000)	(275,000,000)
Other movements (all non-cash)	(111,000,000)	60,000,000
At 31 December	£ 7,751,000,000	9,909,000,000	9,528,000,000
The Bank | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	4.1378%			4.1378%	4.1378%
Issued during the year:		492,000,000
The Bank | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.68229%			2.68229%	2.68229%
Issued during the year:		70,000,000
The Bank | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.0367%			2.0367%	2.0367%
Issued during the year:		218,000,000
The Bank | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	13.00%			13.00%	13.00%
Repurchases and redemptions during the year		(49,000,000)
The Bank | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(135,000,000)
The Bank | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	10.375%			10.375%	10.375%
The Bank | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	£ 303,000,000
The Bank | 2.6787% Fixed rate bond due 2025 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.6787%			2.6787%	2.6787%
The Bank | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount	£ 914,633,000,000,000
Issued during the year:	£ 517,000,000
The Bank | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.73%			2.73%	2.73%
The Bank | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount	£ 393,939,000,000,000
Issued during the year:	£ 394,000,000
The Bank | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035 | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	2.61%			2.61%	2.61%
The Bank | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount | $				$ 2,000
Repurchases and redemptions during the year	£ (119,000,000)
The Bank | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million) | Fixed to floating interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	12.00%			12.00%	12.00%
The Bank | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	13.00%			13.00%	13.00%
Notional amount	£ 700,000,000
Repurchases and redemptions during the year	£ (519,000,000)
The Bank | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	6.50%			6.50%	6.50%
Notional amount | €					€ 1,500
Repurchases and redemptions during the year	£ (1,464,000,000)
The Bank | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount	350,000,000
Repurchases and redemptions during the year	£ (370,000,000)
The Bank | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million) | Fixed to floating interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	5.75%			5.75%	5.75%
The Bank | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount | $				$ 2,000
Repurchases and redemptions during the year	£ (674,000,000)
The Bank | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million) | Fixed interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	6.50%			6.50%	6.50%
The Bank | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	£ (90,000,000)
The Bank | Subordinated Floating Rate Notes 2020 (€100 million) | Floating interest rate
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Notional amount | €					€ 100
The Bank | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	9.625%			9.625%	9.625%
Notional amount	£ 300,000,000
Repurchases and redemptions during the year	£ (240,000,000)
The Bank | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Borrowings, interest rate (in percent)	7.375%			7.375%	7.375%
Repurchases and redemptions during the year	£ (4,000,000)
The Bank | Preferred securities
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	2,234,000,000	2,312,000,000
Increase due to issuance of subordinated liabilities	0	0
Decrease through repurchases and redemptions	638,000,000	49,000,000
Foreign exchange movements	(43,000,000)	(57,000,000)
Other movements (all non-cash)	(19,000,000)	28,000,000
At 31 December	1,572,000,000	2,234,000,000	2,312,000,000
The Bank | Preferred securities | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Bank | Preferred securities | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Bank | Preferred securities | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Bank | Preferred securities | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		(49,000,000)
The Bank | Preferred securities | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Bank | Preferred securities | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Bank | Preferred securities | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Bank | Preferred securities | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Bank | Preferred securities | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(119,000,000)
The Bank | Preferred securities | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(519,000,000)
The Bank | Preferred securities | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Preferred securities | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Preferred securities | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Preferred securities | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Preferred securities | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Preferred securities | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	425,000,000	437,000,000
Increase due to issuance of subordinated liabilities	0	0
Decrease through repurchases and redemptions	0	0
Foreign exchange movements	(10,000,000)	(12,000,000)
Other movements (all non-cash)	1,000,000	0
At 31 December	414,000,000	425,000,000	437,000,000
The Bank | Undated subordinated liabilities | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Bank | Undated subordinated liabilities | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Bank | Undated subordinated liabilities | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		0
The Bank | Undated subordinated liabilities | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Bank | Undated subordinated liabilities | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Bank | Undated subordinated liabilities | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Bank | Undated subordinated liabilities | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Bank | Undated subordinated liabilities | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	0
The Bank | Undated subordinated liabilities | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Undated subordinated liabilities | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Dated subordinated liabilities
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
At 1 January	7,250,000,000	6,779,000,000
Increase due to issuance of subordinated liabilities	1,214,000,000	780,000,000
Decrease through repurchases and redemptions	2,842,000,000	135,000,000
Foreign exchange movements	50,000,000	(206,000,000)
Other movements (all non-cash)	(93,000,000)	32,000,000
At 31 December	5,765,000,000	7,250,000,000	£ 6,779,000,000
The Bank | Dated subordinated liabilities | 4.1378% Dated Subordinated Notes due 2026
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		492,000,000
The Bank | Dated subordinated liabilities | 2.68229% Dated Subordinated Notes due 2038
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		70,000,000
The Bank | Dated subordinated liabilities | 2.0367% Dated Subordinated Notes due 2028
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:		218,000,000
The Bank | Dated subordinated liabilities | 13% Step-up Perpetual Capital Securities callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		0
The Bank | Dated subordinated liabilities | 10.375% Subordinated Fixed to Fixed Rate Notes 2024 callable 2019
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year		£ (135,000,000)
The Bank | Dated subordinated liabilities | 2.6787% Fixed rate bond due 2025
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	303,000,000
The Bank | Dated subordinated liabilities | £914,633,000 2.73% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	517,000,000
The Bank | Dated subordinated liabilities | £393,939,000 2.61% Dated Subordinated Fixed Rate Reset Notes due 2035
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Issued during the year:	394,000,000
The Bank | Dated subordinated liabilities | 12% Fixed to Floating Rate Perpetual Tier 1 Capital Securities callable 2024 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Dated subordinated liabilities | 13% Sterling Step-up Perpetual Capital Securities callable 2029 (£700 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	0
The Bank | Dated subordinated liabilities | 6.5% Dated Subordinated Notes 2020 (€1,500 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(1,464,000,000)
The Bank | Dated subordinated liabilities | 5.75% Subordinated Fixed to Floating Rate Notes 2025 callable 2020 (£350 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(370,000,000)
The Bank | Dated subordinated liabilities | 6.50% Subordinated Fixed Rate Notes 2020 (US$2,000 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(674,000,000)
The Bank | Dated subordinated liabilities | Subordinated Floating Rate Notes 2020 (€100 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(90,000,000)
The Bank | Dated subordinated liabilities | 9.625% Subordinated Bonds 2023 (£300 million)
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	(240,000,000)
The Bank | Dated subordinated liabilities | 7.375% Dated Subordinated Notes 2020
SUBORDINATED LIABILITIES (Details) - Schedule of Movement in Subordinated Liabilities [Line Items]
Repurchases and redemptions during the year	£ (4,000,000)

SHARE CAPITAL (Details) - Sched

SHARE CAPITAL (Details) - Schedule of Authorised Share Capital £ / shares in Units, € in Millions, ¥ in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020GBP (£)£ / sharesshares	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)	Dec. 31, 2020JPY (¥)	Dec. 31, 2019GBP (£)£ / sharesshares	Dec. 31, 2019USD ($)	Dec. 31, 2019EUR (€)	Dec. 31, 2019JPY (¥)	Dec. 31, 2018GBP (£)£ / sharesshares	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2018JPY (¥)	Dec. 31, 2017shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	1,574,285,752				1,574,285,751				1,574,285,751				1,574,285,751
Ordinary shares [member]
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Ordinary shares per share value (in GBP per share) | £ / shares	£ 1				£ 1
Sterling
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Authorised share capital | £	£ 1,694				£ 1,694				£ 1,694
Sterling | Ordinary shares [member]
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	1,650,000,000				1,650,000,000				1,650,000,000
Ordinary shares per share value (in GBP per share) | £ / shares	£ 1				£ 1				£ 1
Authorised share capital | £	£ 1,650				£ 1,650				£ 1,650
Sterling | Cumulative floating rate preference shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	1				1				1
Preference shares per share value (in currency per share) | £ / shares	£ 1				£ 1				£ 1
Authorised share capital | £	£ 0				£ 0				£ 0
Sterling | Non-cumulative redeemable preference shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	100				100				100
Preference shares per share value (in currency per share) | £ / shares	£ 1				£ 1				£ 1
Authorised share capital | £	£ 0				£ 0				£ 0
Sterling | Preference shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	175,000,000				175,000,000				175,000,000
Preference shares per share value (in currency per share) | £ / shares	£ 0.25				£ 0.25				£ 0.25
Authorised share capital | £	£ 44				£ 44				£ 44
US dollars | Preference shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	160,000,000				160,000,000				160,000,000
Preference shares per share value (in currency per share) | £ / shares	£ 0.25				£ 0.25				£ 0.25
Authorised share capital | $		$ 40				$ 40				$ 40
Euro | Preference shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	160,000,000				160,000,000				160,000,000
Preference shares per share value (in currency per share) | £ / shares	£ 0.25				£ 0.25				£ 0.25
Authorised share capital | €			€ 40				€ 40				€ 40
Japanese yen | Preference shares
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Shares outstanding (in shares) | shares	50,000,000				50,000,000				50,000,000
Preference shares per share value (in currency per share) | £ / shares	£ 0.25				£ 0.25				£ 0.25
Authorised share capital | ¥				¥ 1,250				¥ 1,250				¥ 1,250

SHARE CAPITAL (Details) - Sch_2

SHARE CAPITAL (Details) - Schedule of Issued and Fully Paid Share Capital - GBP (£) £ / shares in Units, £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
At 1 January, shares outstanding (in shares)	1,574,285,751	1,574,285,751	1,574,285,751
1 January, issued capital	£ 1,574	£ 1,574	£ 1,574	£ 1,574	£ 1,574	£ 1,574
Number of ordinary shares issued (in shares)	1	0	0
Proceeds from issue of ordinary shares	£ 0	£ 0	£ 0
At 31 December, shares outstanding (in shares)	1,574,285,752	1,574,285,751	1,574,285,751
31 December, issued capital	£ 1,574	£ 1,574	£ 1,574
Ordinary shares [member]
SHARE CAPITAL (Details) - Schedule of Authorised Share Capital [Line Items]
Ordinary shares per share value (in GBP per share)				£ 1	£ 1

SHARE PREMIUM ACCOUNT (Details)

SHARE PREMIUM ACCOUNT (Details) - Schedule of Share Premium Account - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure For Share Premium Account Explanatory [Abstract]
1 January and 31 December	£ 600	£ 600	£ 600

OTHER RESERVES (Details) - Sche

OTHER RESERVES (Details) - Schedule of Other Reserves - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
OTHER RESERVES (Details) - Schedule of Other Reserves [Line Items]
Merger reserve	£ 6,348	£ 6,348	£ 6,348
Cash flow hedging reserve	1,507	1,556	1,110
Foreign currency translation reserve	(116)	(116)	(114)
At 31 December	7,181	7,250	6,965
The Bank
OTHER RESERVES (Details) - Schedule of Other Reserves [Line Items]
Merger reserve	0	0	0
Cash flow hedging reserve	1,367	1,607	1,268
Foreign currency translation reserve	1	0	(6)
At 31 December	1,382	1,710	1,543
Debt securities | The Group
OTHER RESERVES (Details) - Schedule of Other Reserves [Line Items]
Revaluation reserve at fair value through other comprehensive income	(558)	(538)	(379)
Debt securities | The Bank
OTHER RESERVES (Details) - Schedule of Other Reserves [Line Items]
Revaluation reserve at fair value through other comprehensive income	14	103	281
Equity securities | The Group
OTHER RESERVES (Details) - Schedule of Other Reserves [Line Items]
Revaluation reserve at fair value through other comprehensive income	0	0	0
Equity securities | The Bank
OTHER RESERVES (Details) - Schedule of Other Reserves [Line Items]
Revaluation reserve at fair value through other comprehensive income	£ 0	£ 0	£ 0

OTHER RESERVES (Details) - Sc_2

OTHER RESERVES (Details) - Schedule of Movement in Merger Reserves - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
OTHER RESERVES (Details) - Schedule of Movement in Merger Reserves [Line Items]
At 1 January and 31 December	£ 6,348	£ 6,348	£ 6,348
The Bank
OTHER RESERVES (Details) - Schedule of Movement in Merger Reserves [Line Items]
At 1 January and 31 December	£ 0	£ 0	£ 0

OTHER RESERVES (Details) - Sc_3

OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
Change in fair value	£ 0	£ 0	£ 0
Fair value gains (losses) on financial assets reclassified out of available-for-sale financial assets recognised in other comprehensive income	0	0
The Bank
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
Change in fair value	0	0	0
Fair value gains (losses) on financial assets reclassified out of available-for-sale financial assets recognised in other comprehensive income	0	0
Debt securities | The Group
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
At 1 January	(538)	(379)
At 31 December	(558)	(538)	(379)
Debt securities | The Group | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
At 1 January	(538)	(379)	(195)
Change in fair value	46	(34)	(31)
Deferred tax	29	11	31
Current tax	(2)	0	0
Fair value gains (losses) on financial assets reclassified out of available-for-sale financial assets recognised in other comprehensive income	73	(23)	0
Impairment charge	5	(1)	0
At 31 December	(558)	(538)	(379)
Debt securities | The Group | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income | Income statement transfers
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
Income statement transfers in respect of disposals (note 8)	(145)	(196)	(268)
Deferred tax	47	61	84
Net Income statement transfers	(98)	(135)	(184)
Debt securities | The Bank
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
At 1 January	103	281
At 31 December	14	103	281
Debt securities | The Bank | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
At 1 January	103	281	483
Change in fair value	12	(50)	(58)
Deferred tax	(8)	13	34
Current tax	0	0	0
Fair value gains (losses) on financial assets reclassified out of available-for-sale financial assets recognised in other comprehensive income	4	(37)	(24)
Impairment charge	1	(1)	0
At 31 December	14	103	281
Debt securities | The Bank | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income | Income statement transfers
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of debt securities [Line Items]
Income statement transfers in respect of disposals (note 8)	(138)	(201)	(258)
Deferred tax	44	61	80
Net Income statement transfers	£ (94)	£ (140)	£ (178)

OTHER RESERVES (Details) - Sc_4

OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares [Line Items]
Change in fair value	£ 0	£ 0	£ 0
The Group | Equity shares | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares [Line Items]
At 1 January	0	0	(35)
Change in fair value	0	0	(98)
Deferred tax	(16)	12	22
Current tax	0	0	0
Other comprehensive income, before tax, gains (losses) on revaluation	(16)	12	(76)
At 31 December	0	0	0
The Bank
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares [Line Items]
Change in fair value	0	0	0
The Bank | Equity shares | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares [Line Items]
At 1 January	0	0	(42)
Change in fair value	0	0	(102)
Deferred tax	4	12	0
Current tax	0	0	0
Other comprehensive income, before tax, gains (losses) on revaluation	4	12	(102)
At 31 December	0	0	0
Retained profits | The Group | Equity shares | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares [Line Items]
Realised gains and losses transferred to retained profits	0	0	132
Deferred tax	16	(12)	(21)
Current tax	0	0	0
Other comprehensive income, net of tax, gains (losses) on revaluation	16	(12)	111
Retained profits | The Bank | Equity shares | Revaluation reserve in respect of debt securities held at fair value through other comprehensive income
OTHER RESERVES (Details) - Schedule of revaluation reserve in respect of equity shares [Line Items]
Realised gains and losses transferred to retained profits	0	0	144
Deferred tax	(4)	(12)	0
Current tax	0	0	0
Other comprehensive income, net of tax, gains (losses) on revaluation	£ (4)	£ (12)	£ 144

OTHER RESERVES (Details) - Sc_5

OTHER RESERVES (Details) - Schedule of Cash Flow Hedging Reserve - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Cash flow hedging reserve
At 1 January	£ 1,556	£ 1,110
At 31 December	1,507	1,556	£ 1,110
The Group | Cash flow hedging reserve
Cash flow hedging reserve
At 1 January	1,556	1,110	1,573
Change in fair value of hedging derivatives	480	876	48
Income statement transfers	(529)	(430)	(511)
At 31 December	1,507	1,556	1,110
The Bank
Cash flow hedging reserve
At 1 January	1,607	1,268
At 31 December	1,367	1,607	1,268
The Bank | Cash flow hedging reserve
Cash flow hedging reserve
At 1 January	1,607	1,268	1,554
Change in fair value of hedging derivatives	19	675	183
Income statement transfers	(259)	(336)	(469)
At 31 December	1,367	1,607	1,268
Pre-tax | The Group | Cash flow hedging reserve
Cash flow hedging reserve
Change in fair value of hedging derivatives	709	1,166	91
Income statement transfers	(727)	(580)	(691)
Pre-tax | The Bank | Cash flow hedging reserve
Cash flow hedging reserve
Change in fair value of hedging derivatives	85	892	255
Income statement transfers	(355)	(448)	(628)
Deferred tax | The Group | Cash flow hedging reserve
Cash flow hedging reserve
Change in fair value of hedging derivatives	(229)	(290)	(43)
Income statement transfers	198	150	180
Deferred tax | The Bank | Cash flow hedging reserve
Cash flow hedging reserve
Change in fair value of hedging derivatives	(66)	(217)	(72)
Income statement transfers	£ 96	£ 112	£ 159

OTHER RESERVES (Details) - Sc_6

OTHER RESERVES (Details) - Schedule of Foreign Currency Translation Reserve - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Foreign currency translation reserve
At 1 January	£ (116)	£ (114)
Income statement transfers	0	0	£ (108)
At 31 December	(116)	(116)	(114)
The Group | Reserve of change in value of foreign currency basis spreads
Foreign currency translation reserve
At 1 January	(116)	(114)	(207)
Currency translation differences arising in the year	0	(2)	(15)
Income statement transfers	0	0	108
At 31 December	(116)	(116)	(114)
The Bank
Foreign currency translation reserve
At 1 January	0	(6)
Income statement transfers	0	0	84
At 31 December	1	0	(6)
The Bank | Reserve of change in value of foreign currency basis spreads
Foreign currency translation reserve
At 1 January	0	(6)	76
Currency translation differences arising in the year	1	6	2
Income statement transfers	0	0	(84)
At 31 December	£ 1	£ 0	£ (6)

RETAINED PROFITS (Details) - Sc

RETAINED PROFITS (Details) - Schedule of Retained Profits - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
RETAINED PROFITS (Details) - Schedule of Retained Profits [Line Items]
At 1 January	£ 24,549
Profit for the year	1,440	£ 2,796	£ 4,182
Capital transactions with parent
Dividends	(7)	(4,138)	(11,058)
Capital repayment to parent			(2,975)
Capital contributions received	140	229	265
Return of capital contributions	(4)	(5)	(9)
Post-retirement defined benefit scheme remeasurements	113	(1,117)	120
At 31 December	25,750	24,549
The Bank
RETAINED PROFITS (Details) - Schedule of Retained Profits [Line Items]
At 1 January	42,470
Capital transactions with parent
Dividends		(4,100)	(11,022)
Capital repayment to parent			(2,975)
Capital contributions received	140	229	265
Return of capital contributions	(4)	(5)	(9)
Post-retirement defined benefit scheme remeasurements	(102)	(576)	(162)
At 31 December	42,677	42,470
Retained profits
Capital transactions with parent
Income from continuing involvement in derecognised financial assets	1	0	0
Retained profits | The Group
RETAINED PROFITS (Details) - Schedule of Retained Profits [Line Items]
At 1 January	24,549	27,321	36,749
Profit for the year	1,023	2,515	3,907
Capital transactions with parent
Dividends	0	(4,100)	(11,022)
Capital repayment to parent	0	0	(2,975)
Capital contributions received	140	229	265
Return of capital contributions	(4)	(5)	(9)
Capital transactions with related party	136	(3,876)	(13,741)
Realised gains and losses on equity shares held at fair value through other comprehensive income	(16)	12	(111)
Post-retirement defined benefit scheme remeasurements	113	(1,117)	120
Share of other comprehensive income of associates and joint ventures	0	0	8
Gains and losses attributable to own credit risk (net of tax)	(55)	(306)	389
At 31 December	25,750	24,549	27,321
Retained profits | The Bank
RETAINED PROFITS (Details) - Schedule of Retained Profits [Line Items]
At 1 January	42,470	45,051	52,843
Profit for the year	224	2,165	5,866
Capital transactions with parent
Dividends	0	(4,100)	(11,022)
Capital repayment to parent	0	0	(2,975)
Capital contributions received	140	229	265
Return of capital contributions	(4)	(5)	(9)
Capital transactions with related party	136	(3,876)	(13,741)
Realised gains and losses on equity shares held at fair value through other comprehensive income	4	12	(144)
Post-retirement defined benefit scheme remeasurements	(102)	(576)	(162)
Share of other comprehensive income of associates and joint ventures	0	0	0
Gains and losses attributable to own credit risk (net of tax)	(55)	(306)	389
At 31 December	£ 42,677	£ 42,470	£ 45,051

RETAINED PROFITS (Details) - In

RETAINED PROFITS (Details) - Income Statement - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Income Statements, Captions [Line Items]
Profit attributable to ordinary shareholders	£ 224	£ 2,165	£ 5,866
Profit attributable to other equity holders	417	281	275
The Bank
Condensed Income Statements, Captions [Line Items]
Net interest income	4,519	5,684	6,129
Net fee and commission income	655	743	839
Dividends received	44	1,331	4,848
Other operating income	2,952	2,169	2,389
Other income	3,651	4,243	8,076
Total income	8,170	9,927	14,205
Regulatory provisions	(312)	(996)	(939)
Other operating expenses	(5,516)	(5,337)	(5,864)
Total operating expenses	5,828	6,333	6,803
Impairment	(1,898)	(503)	(504)
Profit before tax	444	3,091	6,898
Tax credit (expense)	197	(645)	(757)
Profit for the year	641	2,446	6,141
The Group
Condensed Income Statements, Captions [Line Items]
Net interest income	10,770	12,220	12,754
Net fee and commission income	1,015	1,336	1,269
Other operating income	2,050	2,692	2,543
Other income	3,815	4,388	4,220
Total income	14,585	16,608	16,974
Regulatory provisions	(414)	(2,190)	(1,956)
Other operating expenses	(8,782)	(8,933)	(9,812)
Total operating expenses	9,196	11,123	11,768
Impairment	(4,060)	(1,362)	(926)
Profit before tax	1,329	4,123	5,660	[1]
Tax credit (expense)	137	(1,287)	(1,377)
Profit for the year	1,466	2,836	4,217
Profit attributable to ordinary shareholders	1,023	2,515	3,907
Profit attributable to other equity holders	£ 417	£ 281	£ 275
[1]	The Group profit before tax in 2018 comprised £4,280 million in respect of continuing operations and £1,380 million in respect of discontinued operations.

OTHER EQUITY INSTRUMENTS (Detai

OTHER EQUITY INSTRUMENTS (Details) - Schedule of Other Equity Instruments € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020GBP (£)	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)	Dec. 31, 2019GBP (£)	Dec. 31, 2019USD ($)	Dec. 31, 2018GBP (£)
OTHER EQUITY INSTRUMENTS (Details) - Schedule of Other Equity Instruments [Line Items]
At 1 January	£ 4,865			£ 3,217		£ 3,217
Issued in the year:
Notes issued	1,070			1,648		0
Profit attributable to other equity holders	417			281		275
Distributions on other equity instruments	(417)			(281)		(275)
At 31 December	5,935			4,865		3,217
The Bank
OTHER EQUITY INSTRUMENTS (Details) - Schedule of Other Equity Instruments [Line Items]
At 1 January	4,865
Issued in the year:
At 31 December	5,935			4,865
US$500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities
Issued in the year:
Notes issued	383			0		0
US$500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities | USD notes, nominal
Issued in the year:
Notes issued | $		$ 500
€750 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities
Issued in the year:
Notes issued	687			0		0
€750 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities | Euro notes, nominal
Issued in the year:
Notes issued | €			€ 750
£500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities
Issued in the year:
Notes issued	0			496		0
£500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities | Sterling notes, nominal
Issued in the year:
Notes issued				500
US$1,500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities
Issued in the year:
Notes issued	£ 0			£ 1,152		£ 0
US$1,500 million Fixed Rate Reset Additional Tier 1 Perpetual Subordinated Permanent Write-Down Securities | USD notes, nominal
Issued in the year:
Notes issued | $					$ 1,500

OTHER EQUITY INSTRUMENTS (Det_2

OTHER EQUITY INSTRUMENTS (Details) - Narrative - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Other Equity Instruments Explanatory [Abstract]
Other equity instruments	£ 5,935	£ 4,865	£ 3,217	£ 3,217

DIVIDENDS ON ORDINARY SHARES (D

DIVIDENDS ON ORDINARY SHARES (Details) - Schedule of Dividends On Ordinary Shares - GBP (£) £ in Millions	2 Months Ended	12 Months Ended
	Mar. 11, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DIVIDENDS ON ORDINARY SHARES (Details) - Schedule of Dividends On Ordinary Shares [Line Items]
Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners	£ 1,000
Interim dividend
DIVIDENDS ON ORDINARY SHARES (Details) - Schedule of Dividends On Ordinary Shares [Line Items]
Interim dividends		£ 0	£ 4,100	£ 11,022

SHARE-BASED PAYMENTS (Details)

SHARE-BASED PAYMENTS (Details) - Narrative	12 Months Ended
	Dec. 31, 2020GBP (£)£ / shares	Dec. 31, 2019GBP (£)£ / shares	Dec. 31, 2018GBP (£)
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Charges to income statement in respect of share-based payment schemes	£ 181,000,000	£ 337,000,000	£ 417,000,000
Charges to income statement in respect of share-based payment schemes - discontinued operations			£ 6,000,000
Fixed share awards
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Number of other equity instruments granted in share-based payment arrangement (in shares)	13,975,993	8,239,332
Percent of shares to be released each year (in percent)	20.00%
SAYE
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Maximum monthly scheme savings	£ 500
Time period to use savings	6 months
Discounted market price of shares (in percent)	80.00%
Weighted average exercise price, vested (in GBP per share) | £ / shares	£ 0.61	£ 0.59
Weighted average remaining contractual life of outstanding share options	2 years 11 months 23 days	2 years 2 months 19 days
Weighted average fair value at measurement date, share options granted (in GBP per share)	£ 0.05	£ 0.10
SAYE | 2020 Plan
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Discounted market price of shares (in percent)	90.00%
SAYE | Bottom of range
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Contract term	3 years
Lloyds Banking Group executive share plan 2003
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Weighted average exercise price, vested (in GBP per share) | £ / shares	£ 0.36	£ 0.60
Weighted average remaining contractual life of outstanding share options	4 years 1 month 6 days	3 years 9 months 18 days
Weighted average fair value at measurement date, share options granted (in GBP per share)	£ 0.33	£ 0.59
Lloyds Banking Group long-term incentive plan
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Weighted average fair value at measurement date, share options granted (in GBP per share)	£ 0.28	0.45
Lloyds Banking Group long-term incentive plan | 2017
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Awards vesting rate (in percent)	49.70%
Lloyds Banking Group long-term incentive plan | 2018
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Awards vesting rate (in percent)	33.75%
CFO Buyout
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Weighted average fair value at measurement date, share options granted (in GBP per share)		£ 0.55
Number of options, granted (in shares)	0	4,086,632
Free share awards
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Maximum employer contribution to free shares scheme	£ 3,600
Employer contribution to free shares scheme	£ 200	£ 200
Number of other equity instruments granted in share-based payment arrangement (in shares)	45,612,424	22,422,337
Weighted average fair value at date of award of shares awarded To under matching shares scheme (in GBP per share)	£ 0.30	£ 0.62
Matching shares
SHARE-BASED PAYMENTS (Details) - Narrative [Line Items]
Number of other equity instruments granted in share-based payment arrangement (in shares)	62,262,140	37,346,812
Weighted average fair value at date of award of shares awarded To under matching shares scheme (in GBP per share)	£ 0.34	£ 0.56
Maximum employer contribution to matching shares scheme	£ 45

SHARE-BASED PAYMENTS (Details_2

SHARE-BASED PAYMENTS (Details) - Schedule of Share Options Outstanding	12 Months Ended
	Dec. 31, 2020GBP (£)£ / shares	Dec. 31, 2019GBP (£)£ / shares
SAYE
SHARE-BASED PAYMENTS (Details) - Schedule of Shares under the Executive Share Ownership Plan [Line Items]
Number of options outstanding, start of period (in shares)	1,068,094,073	802,994,918
Number of options, granted (in shares)	779,229,797	487,654,212
Number of options exercised (in shares)	(255,706,663)	(27,303,963)
Number of options, forfeited (in shares)	(6,938,102)	(15,830,204)
Number of options, cancelled (in shares)	(389,767,675)	(130,068,149)
Number of options, expired (in shares)	(74,772,515)	(49,352,741)
Number of options outstanding, end of period (in shares)	1,120,138,915	1,068,094,073
Number of options exercisable, end of period (in shares)	792,741	227,139
Weighted average exercise price of options outstanding, start of period (in GBP per share)	£ 0.4455	£ 0.4930
Weighted average exercise price, granted (in GBP per share)	0.2425	0.3987
Weighted average exercise price, exercised (in GBP per share)	0.4751	0.5123
Weighted average exercise price, forfeited (in GBP per share)	£ 0.4330	£ 0.4869
Weighted average exercise price, cancelled (in GBP per share) | £	£ 0.4224	£ 0.4903
Weighted average exercise price, expired (in GBP per share)	£ 0.4726	£ 0.5874
Weighted average exercise price of options outstanding, end of period (in GBP per share)	0.3039	0.4455
Number of options exercisable, end of period (GBP per share)	£ 0.4749	£ 0.6070
Lloyds Banking Group executive share plan 2003
SHARE-BASED PAYMENTS (Details) - Schedule of Shares under the Executive Share Ownership Plan [Line Items]
Number of options outstanding, start of period (in shares)	7,634,638	10,263,028
Number of options, granted (in shares)	1,990,449	2,336,171
Number of options exercised (in shares)	(2,122,302)	(4,455,481)
Number of options, forfeited (in shares)	(111,100)	(39,250)
Number of options, vested (in shares)	(47,337)	(69,005)
Number of options, expired (in shares)	(677,976)	(400,825)
Number of options outstanding, end of period (in shares)	6,666,372	7,634,638
Number of options exercisable, end of period (in shares)	3,150,407	2,683,267
Weighted average exercise price of options outstanding, start of period (in GBP per share)	£ 0	£ 0
Weighted average exercise price, granted (in GBP per share)	0	0
Weighted average exercise price, exercised (in GBP per share)	0	0
Weighted average exercise price, vested (in GBP per share)	0	0
Weighted average exercise price, forfeited (in GBP per share)	0	0
Weighted average exercise price, expired (in GBP per share)	0	0
Weighted average exercise price of options outstanding, end of period (in GBP per share)	0	0
Number of options exercisable, end of period (GBP per share)	£ 0	£ 0

SHARE-BASED PAYMENTS (Details_3

SHARE-BASED PAYMENTS (Details) - Schedule of Shares under the Executive Share Ownership Plan - Lloyds Banking Group executive share plan 2006	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
SHARE-BASED PAYMENTS (Details) - Schedule of Shares under the Executive Share Ownership Plan [Line Items]
Outstanding at 1 January (in shares)	459,904,745	417,385,636
Granted (in shares)	211,214,605	174,490,843
Vested (in shares)	(47,775,806)	(88,318,950)
Forfeited (in shares)	(96,015,542)	(55,029,439)
Dividend award (in shares)	6,659,525	11,376,655
Outstanding at 31 December (in shares)	533,987,527	459,904,745

SHARE-BASED PAYMENTS (Details_4

SHARE-BASED PAYMENTS (Details) - Schedule of Shares under CFO Buyout - CFO Buyout	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
SHARE-BASED PAYMENTS (Details) - Schedule of Shares under CFO Buyout [Line Items]
Outstanding at 1 January (in shares)	3,268,460	0
Granted (in shares)	0	4,086,632
Vested (in shares)	(1,457,748)	(818,172)
Outstanding at 31 December (in shares)	1,810,712	3,268,460

SHARE-BASED PAYMENTS (Details_5

SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans	12 Months Ended
	Dec. 31, 2020£ / shares
SAYE
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate (in percent)	(0.03%)
Weighted average expected life	3 years 2 months 12 days
Weighted average expected volatility (in percent)	32.00%
Weighted average dividend yield (in percent)	5.30%
Weighted average share price (in GBP per share)	£ 0.28
Weighted average exercise price (in GBP per share)	£ 0.24
Executive Share Plan 2003
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate (in percent)	(0.01%)
Weighted average expected life	1 year 2 months 12 days
Weighted average expected volatility (in percent)	42.00%
Weighted average dividend yield (in percent)	5.30%
Weighted average share price (in GBP per share)	£ 0.35
Weighted average exercise price (in GBP per share)	£ 0
Executive Group Ownership Share Plan
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate (in percent)	0.18%
Weighted average expected life	3 years 7 months 6 days
Weighted average expected volatility (in percent)	23.00%
Weighted average dividend yield (in percent)	5.30%
Weighted average share price (in GBP per share)	£ 0.47
Weighted average exercise price (in GBP per share)	£ 0

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details) - Schedule of Compensation of Key Management Personnel - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation
Salaries and other short-term benefits	£ 12	£ 14	£ 13
Post-employment benefits	0	0	0
Share-based payments	12	14	17
Total compensation	£ 24	£ 28	£ 30

RELATED PARTY TRANSACTIONS (D_2

RELATED PARTY TRANSACTIONS (Details) - Narrative - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Borrowings, interest rate (in percent)	2.42%	2.25%	2.74%
Pension funds
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Customer deposits	£ 151,000,000	£ 169,000,000
Outstanding
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Loans and advances to customers	28,000,000	75,000,000
Directors and connected persons
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Wages and salaries	11,800,000	11,700,000	£ 12,200,000
Outstanding commitments made by entity, related party transactions	600,000	600,000	500,000
Key management personnel of entity or parent
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Pension contributions	0	0	0
Provisions	£ 0	£ 0	£ 0
Interest rate on deposits (in percent)	2.00%	3.00%	3.50%
Key management personnel of entity or parent | Bottom of range
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Borrowings, interest rate (in percent)	0.39%	6.45%	6.70%
Key management personnel of entity or parent | Top of range
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Borrowings, interest rate (in percent)	24.20%	24.20%	24.20%
Highest paid director
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Wages and salaries	£ 4,169,000	£ 4,078,000	£ 5,472,000
The Group
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Customer deposits	434,569,000,000	396,839,000,000
Loans and advances to customers	480,141,000,000	474,470,000,000
The Group | Operating Margin Guarantee
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Payments related to guarantees made by entity	20,000,000
The Group | Schroder Wealth Holdings Limited
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Management fee expense	7,000,000	2,000,000
The Group | Balances and transactions with Lloyds Banking Group plc and fellow subsidiaries of the Bank
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Interest income on other financial assets	5,000,000	20,000,000	166,000,000
Interest expense on other financial liabilities	478,000,000	520,000,000	370,000,000
The Bank
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Customer deposits	264,473,000,000	239,762,000,000
Loans and advances to customers	178,269,000,000	177,569,000,000
The Bank | Balances and transactions between members of the Lloyds Bank Group
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Interest income on other financial assets	1,995,000,000	2,491,000,000	2,305,000,000
Interest expense on other financial liabilities	336,000,000	655,000,000	545,000,000
Recharges on subsidiaries	1,403,000,000	1,461,000,000	1,315,000,000
Fees received from subsidiaries	56,000,000	62,000,000	146,000,000
Fees paid to subsidiaries	26,000,000	57,000,000	151,000,000
The Bank | Balances and transactions with Lloyds Banking Group plc and fellow subsidiaries of the Bank
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Interest income on other financial assets	5,000,000	20,000,000	142,000,000
Interest expense on other financial liabilities	461,000,000	509,000,000	£ 334,000,000
Joint ventures and associates
RELATED PARTY TRANSACTIONS (Details) - Narrative [Line Items]
Balances on term deposits from customers	£ 73,000,000	£ 5,000,000

RELATED PARTY TRANSACTIONS (D_3

RELATED PARTY TRANSACTIONS (Details) - Schedule of Aggregate Contributions in Respect of Key Management Personnel to Defined Contribution Pension Schemes - Key management personnel of entity or parent - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share option plans
RELATED PARTY TRANSACTIONS (Details) - Schedule of Aggregate Contributions in Respect of Key Management Personnel to Defined Contribution Pension Schemes [Line Items]
At 1 January	£ 0	£ 0	£ 1
Granted, including certain adjustments (includes entitlements of appointed key management personnel)	0	0	0
Exercised/lapsed (includes entitlements of former key management personnel)	0	0	(1)
31 December	0	0	0
Share plans
RELATED PARTY TRANSACTIONS (Details) - Schedule of Aggregate Contributions in Respect of Key Management Personnel to Defined Contribution Pension Schemes [Line Items]
At 1 January	101	84	82
Granted, including certain adjustments (includes entitlements of appointed key management personnel)	46	46	39
Exercised/lapsed (includes entitlements of former key management personnel)	(30)	(29)	(37)
31 December	£ 117	£ 101	£ 84

RELATED PARTY TRANSACTIONS (D_4

RELATED PARTY TRANSACTIONS (Details) - Schedule of Loan Balances Outstanding - Key management personnel of entity or parent - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans
At 1 January	£ 2	£ 2	£ 2
Advanced (includes loans of appointed key management personnel)	0	1	1
Repayments (includes loans of former key management personnel)	0	(1)	(1)
At 31 December	£ 2	£ 2	£ 2

RELATED PARTY TRANSACTIONS (D_5

RELATED PARTY TRANSACTIONS (Details) - Schedule of Deposits - Key management personnel of entity or parent - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deposits
At 1 January	£ 23	£ 20	£ 20
Placed (includes deposits of appointed key management personnel)	26	44	33
Withdrawn (includes deposits of former key management personnel)	(38)	(41)	(33)
At 31 December	£ 11	£ 23	£ 20

RELATED PARTY TRANSACTIONS (D_6

RELATED PARTY TRANSACTIONS (Details) - Schedule of Balances and Transactions Between Members of the Lloyds Bank Group - Balances and transactions between members of the Lloyds Bank Group - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets, included within:
Derivative financial instruments	£ 7,077	£ 8,546
Financial assets at fair value through profit or loss	1,203	0
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	128,241	200,696
Total financial assets	136,521	209,242
Liabilities, included within:
Due to fellow Lloyds Banking Group undertakings	33,170	105,075
Financial liabilities at fair value through profit or loss	0	43
Derivative financial instruments	4,738	7,102
Debt securities in issue	20	0
Total financial liabilities	£ 37,928	£ 112,220

RELATED PARTY TRANSACTIONS (D_7

RELATED PARTY TRANSACTIONS (Details) - Schedule of Balances and Transactions with Lloyds Banking Group Plc and Fellow Subsidiaries of the Bank - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Liabilities, included within:
Subordinated liabilities		£ 12,586
The Group
Assets, included within:
Financial assets at fair value through profit or loss	£ 1,674	2,284
Derivative financial instruments	8,341	8,494
Total financial assets	579,429	561,068
Liabilities, included within:
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Financial liabilities at fair value through profit or loss	6,831	7,702
Derivative financial instruments	8,228	9,831
Debt securities in issue	59,293	76,431
Subordinated liabilities	9,242	12,586	£ 12,745
Total financial liabilities	553,234	535,063
The Group | Balances and transactions with Lloyds Banking Group plc and fellow subsidiaries of the Bank
Assets, included within:
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	738	1,854
Derivative financial instruments	690	591
Total financial assets	1,428	2,445
Liabilities, included within:
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Financial liabilities at fair value through profit or loss	0	1
Derivative financial instruments	1,424	1,986
Debt securities in issue	12,686	11,181
Subordinated liabilities	4,599	3,663
Total financial liabilities	25,584	21,724
The Bank
Assets, included within:
Financial assets at fair value through profit or loss	1,724	703
Derivative financial instruments	12,595	13,638
Total financial assets	401,987	462,034
Liabilities, included within:
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Financial liabilities at fair value through profit or loss	7,907	7,697
Derivative financial instruments	11,072	14,211
Debt securities in issue	48,109	61,509
Subordinated liabilities	7,751	9,909	£ 9,528
Total financial liabilities	390,536	451,154
The Bank | Balances and transactions with Lloyds Banking Group plc and fellow subsidiaries of the Bank
Assets, included within:
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	530	1,581
Derivative financial instruments	690	591
Total financial assets	1,220	2,172
Liabilities, included within:
Due to fellow Lloyds Banking Group undertakings	6,666	4,696
Financial liabilities at fair value through profit or loss	1,121	1
Derivative financial instruments	972	1,547
Debt securities in issue	11,551	11,136
Subordinated liabilities	4,745	3,641
Total financial liabilities	£ 25,055	£ 21,021

CONTINGENT LIABILITIES, COMMI_3

CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Narrative [Line Items]
Capital commitments	£ 501	£ 405
Amounts related to assets to be leased under operating leases signage	501	400
The Group | Maximum exposure
CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Narrative [Line Items]
Irrevocable commitments and guarantees	59,240	46,629
The Bank
CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Narrative [Line Items]
Capital commitments	0	2
The Bank | Maximum exposure
CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Narrative [Line Items]
Irrevocable commitments and guarantees	32,847	£ 27,672
Legal proceedings contingent liability | The Group
CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Narrative [Line Items]
Increase in current tax liability	700
Decrease in deferred tax asset	£ 270

CONTINGENT LIABILITIES, COMMI_4

CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Schedule of Contingent Liabilities - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Contingent liabilities
Contingent liabilities	£ 2,364	£ 2,570
The Bank
Contingent liabilities
Contingent liabilities	2,093	2,289
Acceptances and endorsements | The Group
Contingent liabilities
Contingent liabilities	73	17
Acceptances and endorsements | The Bank
Contingent liabilities
Contingent liabilities	73	16
Other items serving as direct credit substitutes | The Group
Contingent liabilities
Contingent liabilities	221	279
Other items serving as direct credit substitutes | The Bank
Contingent liabilities
Contingent liabilities	203	259
Performance bonds, including letters of credit, and other transaction-related contingencies | The Group
Contingent liabilities
Contingent liabilities	2,070	2,274
Performance bonds, including letters of credit, and other transaction-related contingencies | The Bank
Contingent liabilities
Contingent liabilities	1,817	2,014
Other contingent liabilities | The Group
Contingent liabilities
Contingent liabilities	2,291	2,553
Other contingent liabilities | The Bank
Contingent liabilities
Contingent liabilities	2,020	2,273
Incurred on behalf of fellow Lloyds Banking Group undertakings | The Bank
Contingent liabilities
Contingent liabilities	£ 1	£ 1

CONTINGENT LIABILITIES, COMMI_5

CONTINGENT LIABILITIES, COMMITMENTS AND GUARANTEES (Details) - Schedule of Commitments - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Commitments and guarantees
Commitments and guarantees	£ 133,598	£ 116,434
The Group | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	102,280	90,958
The Group | 1 year or over original maturity
Commitments and guarantees
Commitments and guarantees	31,194	25,310
The Bank
Commitments and guarantees
Commitments and guarantees	62,766	52,549
The Bank | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	34,552	30,732
The Bank | 1 year or over original maturity
Commitments and guarantees
Commitments and guarantees	28,118	21,664
Documentary credits and other short-term trade-related transactions | The Group
Commitments and guarantees
Commitments and guarantees	1	0
Documentary credits and other short-term trade-related transactions | The Bank
Commitments and guarantees
Commitments and guarantees	0	0
Forward asset purchases and forward deposits placed | The Group
Commitments and guarantees
Commitments and guarantees	124	171
Forward asset purchases and forward deposits placed | The Bank
Commitments and guarantees
Commitments and guarantees	96	157
Mortgage offers made | The Group | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	20,128	12,647
Mortgage offers made | The Bank | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	1,720	1,120
Other commitments and guarantees | The Group | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	82,151	78,306
Other commitments and guarantees | The Bank | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	32,832	29,608
Undrawn commitments | The Group | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	102,279	90,953
Undrawn commitments | The Bank | Not later than 1 year
Commitments and guarantees
Commitments and guarantees	34,552	30,728
Incurred on behalf of fellow Lloyds Banking Group undertakings | The Bank
Commitments and guarantees
Commitments and guarantees	£ 3,659	£ 4,647

STRUCTURED ENTITIES (Details)

STRUCTURED ENTITIES (Details) - Cancara - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
STRUCTURED ENTITIES (Details) [Line Items]
Financial assets pledged as collateral for liabilities or contingent liabilities	£ 2,490	£ 3,735
Loans and advances to customers	1,695	3,670
Asset-backed debt instruments held	£ 795	£ 65

FINANCIAL INSTRUMENTS (Details)

FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Subordinated liabilities		£ 12,586
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Cash and balances at central banks	£ 49,888	38,880	£ 40,213
Items in the course of collection from banks	300	292
Financial assets at fair value through profit or loss	1,674	2,284
Derivative financial instruments	8,341	8,494
Loans and advances to banks	5,950	4,852	3,692
Loans and advances to customers	480,141	474,470
Debt securities	5,137	5,325
Due from fellow Lloyds Banking Group undertakings	738	1,854
Financial assets at amortised cost	491,966	486,501
Financial assets at fair value through other comprehensive income	27,260	24,617
Total financial assets	579,429	561,068
Deposits from banks	24,997	23,593
Customer deposits	434,569	396,839
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Items in course of transmission to banks	302	354
Financial liabilities at fair value through profit or loss	6,831	7,702
Derivative financial instruments	8,228	9,831
Notes in circulation	1,305	1,079
Debt securities in issue	59,293	76,431
Other	1,592	1,755
Subordinated liabilities	9,242	12,586	12,745
Total financial liabilities	553,234	535,063
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Cash and balances at central banks	45,753	35,741	37,632
Items in the course of collection from banks	257	252
Financial assets at fair value through profit or loss	1,724	703
Derivative financial instruments	12,595	13,638
Loans and advances to banks	5,656	4,453	3,153
Loans and advances to customers	178,269	177,569
Debt securities	4,315	5,241
Due from fellow Lloyds Banking Group undertakings	128,771	202,277
Financial assets at amortised cost	317,011	389,540
Financial assets at fair value through other comprehensive income	24,647	22,160
Total financial assets	401,987	462,034
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Items in course of transmission to banks	199	198
Financial liabilities at fair value through profit or loss	7,907	7,697
Derivative financial instruments	11,072	14,211
Debt securities in issue	48,109	61,509
Other	885	975
Subordinated liabilities	7,751	9,909	£ 9,528
Total financial liabilities	390,536	451,154
Derivatives designated as hedging instruments | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Derivative financial instruments	674	1,117
Total financial assets	674	1,117
Derivative financial instruments	590	1,029
Total financial liabilities	590	1,029
Derivatives designated as hedging instruments | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Derivative financial instruments	242	207
Total financial assets	242	207
Derivative financial instruments	289	267
Total financial liabilities	289	267
Held for trading | Mandatorily held at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial assets at fair value through profit or loss	0	290
Derivative financial instruments	7,667	7,377
Total financial assets	7,667	7,667
Financial liabilities at fair value through profit or loss	3	171
Derivative financial instruments	7,638	8,802
Total financial liabilities	7,641	8,973
Held for trading | Mandatorily held at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial assets at fair value through profit or loss	0	290
Derivative financial instruments	12,353	13,431
Total financial assets	12,353	13,721
Financial liabilities at fair value through profit or loss	2	213
Derivative financial instruments	10,783	13,944
Total financial liabilities	10,785	14,157
Other | Mandatorily held at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial assets at fair value through profit or loss	1,674	1,994
Total financial assets	1,674	1,994
Other | Mandatorily held at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial assets at fair value through profit or loss	1,724	413
Total financial assets	1,724	413
Designated at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial liabilities at fair value through profit or loss	6,828	7,531
Total financial liabilities	6,828	7,531
Designated at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial liabilities at fair value through profit or loss	7,905	7,484
Total financial liabilities	7,905	7,484
At fair value through other comprehensive income | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial assets at fair value through other comprehensive income	27,260	24,617
Total financial assets	27,260	24,617
At fair value through other comprehensive income | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Financial assets at fair value through other comprehensive income	24,647	22,160
Total financial assets	24,647	22,160
Held at amortised cost | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Cash and balances at central banks	49,888	38,880
Items in the course of collection from banks	300	292
Loans and advances to banks	5,950	4,852
Loans and advances to customers	480,141	474,470
Debt securities	5,137	5,325
Due from fellow Lloyds Banking Group undertakings	738	1,854
Financial assets at amortised cost	491,966	486,501
Total financial assets	542,154	525,673
Deposits from banks	24,997	23,593
Customer deposits	434,569	396,839
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Items in course of transmission to banks	302	354
Notes in circulation	1,305	1,079
Debt securities in issue	59,293	76,431
Other	1,592	1,755
Subordinated liabilities	9,242	12,586
Total financial liabilities	538,175	517,530
Held at amortised cost | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets and Liabilites [Line Items]
Cash and balances at central banks	45,753	35,741
Items in the course of collection from banks	257	252
Loans and advances to banks	5,656	4,453
Loans and advances to customers	178,269	177,569
Debt securities	4,315	5,241
Due from fellow Lloyds Banking Group undertakings	128,771	202,277
Financial assets at amortised cost	317,011	389,540
Total financial assets	363,021	425,533
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Items in course of transmission to banks	199	198
Debt securities in issue	48,109	61,509
Other	885	975
Subordinated liabilities	7,751	9,909
Total financial liabilities	£ 371,557	£ 429,246

FINANCIAL INSTRUMENTS (Detail_2

FINANCIAL INSTRUMENTS (Details) - Narrative - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase in fair value of financial liability, attributable to changes in credit risk of liability	£ 75	£ 419
Top of range
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase (decrease) in valuation adjustment	116
CVA
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase (decrease) in valuation adjustment	£ 46
DVA
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase (decrease) in credit default swap (in percent)	1.00%
DVA | Bottom of range
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase (decrease) in valuation adjustment	£ 14
Valuation adjustment | Bottom of range
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase (decrease) in valuation adjustment	(56)
Funding Valuation Adjustment
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Increase (decrease) in valuation adjustment	12
The Group
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Financial liabilities at fair value through profit or loss	6,831	7,702
Liabilities designated at fair value through profit or loss: debt securities in issue	6,828	7,531
Derivative financial instruments	8,341	8,494
Derivative financial instruments	(8,228)	(9,831)
Adjustments for gains (losses) on change in fair value of derivatives	£ 26	20
The Group | Residential mortgage backed securities | Bottom of range
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Debt instrument term	2 years
The Group | Residential mortgage backed securities | Top of range
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Debt instrument term	5 years
The Group | Total level 3 assets carried at fair value, excluding derivatives (recurring basis)
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Financial assets at fair value excluding derivatives	£ 28,934	26,901
The Bank
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Financial liabilities at fair value through profit or loss	7,907	7,697
Liabilities designated at fair value through profit or loss: debt securities in issue	7,905	7,484
Derivative financial instruments	12,595	13,638
Derivative financial instruments	(11,072)	(14,211)
The Bank | Total level 3 assets carried at fair value, excluding derivatives (recurring basis)
FINANCIAL INSTRUMENTS (Details) - Narrative [Line Items]
Financial assets at fair value excluding derivatives	£ 26,371	£ 22,863

FINANCIAL INSTRUMENTS (Detail_3

FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	£ 480,141	£ 474,470
Debt securities:
Net carrying amount	5,137	5,325
Total	1,674	2,284
Total financial assets at fair value through other comprehensive income	27,260	24,617
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	178,269	177,569
Debt securities:
Net carrying amount	4,315	5,241
Total	1,724	703
Total financial assets at fair value through other comprehensive income	24,647	22,160
Financial assets at fair value through other comprehensive income | The Group
Debt securities:
Government securities	14,267	13,082
Corporate and other debt securities	12,928	11,036
Net carrying amount	27,260	24,178
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	27,260	24,617
Financial assets at fair value through other comprehensive income | The Bank
Debt securities:
Government securities	14,114	12,938
Corporate and other debt securities	10,533	8,783
Net carrying amount	24,647	21,721
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	24,647	22,160
Level 1 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	0	0
Debt securities:
Net carrying amount	0	0
Level 1 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	0	0
Debt securities:
Net carrying amount	0	0
Level 2 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	54,447	51,624
Debt securities:
Net carrying amount	5,129	5,317
Level 2 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	54,447	51,624
Debt securities:
Net carrying amount	4,315	5,242
Level 3 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	425,071	423,504
Debt securities:
Net carrying amount	0	0
Level 3 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	122,076	123,576
Debt securities:
Net carrying amount	0	0
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | The Group
Debt securities:
Total financial assets carried at fair value, excluding derivatives	28,934	26,901
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | The Bank
Debt securities:
Total financial assets carried at fair value, excluding derivatives	26,371	22,863
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Financial assets at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	1,511	1,782
Equity shares	163	165
Debt securities:
Government securities		290
Corporate and other debt securities		47
Net carrying amount		337
Total	1,674	2,284
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Financial assets at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	517	362
Equity shares	4	4
Debt securities:
Government securities	0	290
Corporate and other debt securities	1,203	47
Net carrying amount	1,203	337
Total	1,724	703
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Financial assets at fair value through other comprehensive income | The Group
Debt securities:
Government securities	14,267	13,082
Asset-backed securities	65	60
Corporate and other debt securities	12,928	11,036
Net carrying amount	27,260	24,178
Treasury and other bills		439
Total financial assets at fair value through other comprehensive income	27,260	24,617
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Financial assets at fair value through other comprehensive income | The Bank
Debt securities:
Government securities	14,114	12,938
Corporate and other debt securities	10,533	8,783
Net carrying amount	24,647	21,721
Treasury and other bills		439
Total financial assets at fair value through other comprehensive income	24,647	22,160
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 1 | The Group
Debt securities:
Total financial assets carried at fair value, excluding derivatives	14,917	13,734
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 1 | The Bank
Debt securities:
Total financial assets carried at fair value, excluding derivatives	14,605	13,429
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 1 | Financial assets at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	0	0
Equity shares	159	161
Debt securities:
Government securities		290
Corporate and other debt securities		0
Net carrying amount		290
Total	159	451
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 1 | Financial assets at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	0	0
Equity shares	0	0
Debt securities:
Government securities	0	290
Corporate and other debt securities	0	0
Net carrying amount	0	290
Total	0	290
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 1 | Financial assets at fair value through other comprehensive income | The Group
Debt securities:
Government securities	14,267	12,844
Asset-backed securities	0	0
Corporate and other debt securities	491	0
Net carrying amount	14,758	12,844
Treasury and other bills		439
Total financial assets at fair value through other comprehensive income	14,758	13,283
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 1 | Financial assets at fair value through other comprehensive income | The Bank
Debt securities:
Government securities	14,114	12,700
Corporate and other debt securities	491	0
Net carrying amount	14,605	12,700
Treasury and other bills		439
Total financial assets at fair value through other comprehensive income	14,605	13,139
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 2 | The Group
Debt securities:
Total financial assets carried at fair value, excluding derivatives	12,441	11,278
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 2 | The Bank
Debt securities:
Total financial assets carried at fair value, excluding derivatives	11,249	9,025
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 2 | Financial assets at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	0	0
Equity shares	4	4
Debt securities:
Government securities		0
Corporate and other debt securities		0
Net carrying amount		0
Total	4	4
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 2 | Financial assets at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	0	0
Equity shares	4	4
Debt securities:
Government securities	0	0
Corporate and other debt securities	1,203	0
Net carrying amount	1,203	0
Total	1,207	4
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 2 | Financial assets at fair value through other comprehensive income | The Group
Debt securities:
Government securities	0	238
Asset-backed securities	0	0
Corporate and other debt securities	12,437	11,036
Net carrying amount	12,437	11,274
Treasury and other bills		0
Total financial assets at fair value through other comprehensive income	12,437	11,274
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 2 | Financial assets at fair value through other comprehensive income | The Bank
Debt securities:
Government securities	0	238
Corporate and other debt securities	10,042	8,783
Net carrying amount	10,042	9,021
Treasury and other bills		0
Total financial assets at fair value through other comprehensive income	10,042	9,021
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 3 | The Group
Debt securities:
Total financial assets carried at fair value, excluding derivatives	1,576	1,889
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 3 | The Bank
Debt securities:
Total financial assets carried at fair value, excluding derivatives	517	409
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 3 | Financial assets at fair value through profit or loss | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	1,511	1,782
Equity shares	0	0
Debt securities:
Government securities		0
Corporate and other debt securities		47
Net carrying amount		47
Total	1,511	1,829
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 3 | Financial assets at fair value through profit or loss | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Assets Excluding Derivatives [Line Items]
Loans and advances to customers	517	362
Equity shares	0	0
Debt securities:
Government securities	0	0
Corporate and other debt securities	0	47
Net carrying amount	0	47
Total	517	409
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 3 | Financial assets at fair value through other comprehensive income | The Group
Debt securities:
Government securities	0	0
Asset-backed securities	65	60
Corporate and other debt securities	0	0
Net carrying amount	65	60
Treasury and other bills		0
Total financial assets at fair value through other comprehensive income	65	60
Total level 3 assets carried at fair value, excluding derivatives (recurring basis) | Level 3 | Financial assets at fair value through other comprehensive income | The Bank
Debt securities:
Government securities	0	0
Corporate and other debt securities	0	0
Net carrying amount	0	0
Treasury and other bills		0
Total financial assets at fair value through other comprehensive income	£ 0	£ 0

FINANCIAL INSTRUMENTS (Detail_4

FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	£ 561,068
Gains recognised in other comprehensive income within the revaluation reserve in respect of financial assets at fair value through other comprehensive income	0	£ 0
At 31 December	579,429	561,068
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	462,034
Gains recognised in other comprehensive income within the revaluation reserve in respect of financial assets at fair value through other comprehensive income	0	0
At 31 December	401,987	462,034
Level 3 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
Gains recognised in the income statement within other income	0	1
Transfers into the level 3 portfolio	0	51
Transfers out of the level 3 portfolio	0	0
Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December	0	0
Level 3 | The Group | Financial assets at fair value through profit or loss
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	1,829	2,721
Exchange and other adjustments	85	(74)
Gains recognised in the income statement within other income	20	4
Purchases/increases to customer loans	303	686
Sales/repayments of customer loans	(677)	(1,956)
Transfers into the level 3 portfolio	0	448
Transfers out of the level 3 portfolio	(49)	0
At 31 December	1,511	1,829
Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December	103	(76)
Level 3 | The Group | Financial assets at fair value through other comprehensive income
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	60	53
Exchange and other adjustments	3	(3)
Gains recognised in other comprehensive income within the revaluation reserve in respect of financial assets at fair value through other comprehensive income	4	11
Purchases/increases to customer loans	0	0
Sales/repayments of customer loans	(2)	(1)
Transfers into the level 3 portfolio	0	0
Transfers out of the level 3 portfolio	0	0
At 31 December	65	60
Level 3 | The Group | Total level 3 assets carried at fair value, excluding derivatives (recurring basis)
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	1,889	2,774
Exchange and other adjustments	88	(77)
Gains recognised in the income statement within other income	20	4
Gains recognised in other comprehensive income within the revaluation reserve in respect of financial assets at fair value through other comprehensive income	4	11
Purchases/increases to customer loans	303	686
Sales/repayments of customer loans	(679)	(1,957)
Transfers into the level 3 portfolio	0	448
Transfers out of the level 3 portfolio	(49)	0
At 31 December	1,576	1,889
Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December	103	(76)
Level 3 | The Bank | Financial assets at fair value through profit or loss
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	409	890
Exchange and other adjustments	101	(28)
Gains recognised in the income statement within other income	5	0
Purchases/increases to customer loans	258	101
Sales/repayments of customer loans	(207)	(603)
Transfers into the level 3 portfolio	0	49
Transfers out of the level 3 portfolio	(49)	0
At 31 December	517	409
Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December	106	(28)
Level 3 | The Bank | Financial assets at fair value through other comprehensive income
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	0	0
Exchange and other adjustments	0	0
Purchases/increases to customer loans	0	0
Sales/repayments of customer loans	0	0
Transfers into the level 3 portfolio	0	0
Transfers out of the level 3 portfolio	0	0
At 31 December	0	0
Level 3 | The Bank | Total level 3 assets carried at fair value, excluding derivatives (recurring basis)
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Portfolio [Line Items]
At 1 January	409	890
Exchange and other adjustments	101	(28)
Gains recognised in the income statement within other income	5	0
Purchases/increases to customer loans	258	101
Sales/repayments of customer loans	(207)	(603)
Transfers into the level 3 portfolio	0	49
Transfers out of the level 3 portfolio	(49)	0
At 31 December	517	409
Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December	£ 106	£ (28)

FINANCIAL INSTRUMENTS (Detail_5

FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	£ 6,828	£ 7,531
Trading liabilities:	3	171
Total financial liabilities at fair value through profit or loss	6,831	7,702
The Group | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	2	98
The Group | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	1	73
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	7,905	7,484
Trading liabilities:	2	213
Total financial liabilities at fair value through profit or loss	7,907	7,697
The Bank | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	2	140
The Bank | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	73
Level 1 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	0	0
Trading liabilities:	1	73
Total financial liabilities at fair value through profit or loss	1	73
Level 1 | The Group | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 1 | The Group | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	1	73
Level 1 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	0	0
Trading liabilities:	0	73
Total financial liabilities at fair value through profit or loss	0	73
Level 1 | The Bank | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 1 | The Bank | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	73
Level 2 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	6,783	7,484
Trading liabilities:	2	98
Total financial liabilities at fair value through profit or loss	6,785	7,582
Level 2 | The Group | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	2	98
Level 2 | The Group | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 2 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	7,905	7,484
Trading liabilities:	2	140
Total financial liabilities at fair value through profit or loss	7,907	7,624
Level 2 | The Bank | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	2	140
Level 2 | The Bank | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 3 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	45	47
Trading liabilities:	0	0
Total financial liabilities at fair value through profit or loss	45	47
Level 3 | The Group | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 3 | The Group | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 3 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Liabilities designated at fair value through profit or loss	0	0
Trading liabilities:	0	0
Total financial liabilities at fair value through profit or loss	0	0
Level 3 | The Bank | Other deposits
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	0	0
Level 3 | The Bank | Short positions in securities
FINANCIAL INSTRUMENTS (Details) - Schedule of Financial Liabilities Excluding Derivatives [Line Items]
Trading liabilities:	£ 0	£ 0

FINANCIAL INSTRUMENTS (Detail_6

FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Financial Liabilities Excluding Derivatives - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Financial Liabilities Excluding Derivatives [Line Items]
At 1 January	£ 535,063
At 31 December	553,234	£ 535,063
Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Movements in Level 3 Financial Liabilities Excluding Derivatives [Line Items]
At 1 January	47	0
Gains recognised in the income statement within other income	0	1
Redemptions	(2)	(5)
Transfers into the level 3 portfolio	0	51
Transfers out of the level 3 portfolio	0	0
At 31 December	45	47
Gains (losses) recognised in the income statement, within other income, relating to the change in fair value of those assets held at 31 December	£ 0	£ 0

FINANCIAL INSTRUMENTS (Detail_7

FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	£ 8,341	£ 8,494
Derivative liabilities	(8,228)	(9,831)
The Group | Level 1
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
The Group | Level 2
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	8,327	8,494
Derivative liabilities	(7,909)	(9,534)
The Group | Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	14	0
Derivative liabilities	(319)	(297)
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	12,595	13,638
Derivative liabilities	(11,072)	(14,211)
The Bank | Level 1
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
The Bank | Level 2
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	12,581	13,638
Derivative liabilities	(11,012)	(14,211)
The Bank | Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative assets	14	0
Derivative liabilities	£ (60)	£ 0

FINANCIAL INSTRUMENTS (Detail_8

FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
At 1 January, derivative assets	£ 8,494
At 1 January, derivative liabilities	(9,831)
Exchange and other adjustments	0	£ 2	£ (93)
At 31 December, derivative assets	8,341	8,494
At 31 December, derivative liabilities	(8,228)	(9,831)
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
At 1 January, derivative assets	13,638
At 1 January, derivative liabilities	(14,211)
Exchange and other adjustments	(1)	(6)	82
At 31 December, derivative assets	12,595	13,638
At 31 December, derivative liabilities	(11,072)	(14,211)
Level 3 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
Losses (gains) recognised in the income statement within other income	0	(1)
Transfers into the level 3 portfolio	0	51
Transfers out of the level 3 portfolio	0	0
Level 3 | Derivative assets | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
At 1 January, derivative assets	0	5
Exchange and other adjustments	0	0
Losses (gains) recognised in the income statement within other income	1	0
(Sales) redemptions	0	0
Transfers into the level 3 portfolio	13	0
Transfers out of the level 3 portfolio	0	5
At 31 December, derivative assets	14	0	5
Level 3 | Derivative assets | The Group | Change in fair value of assets or liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
Losses (gains) recognised in the income statement within other income	(1)	0
Level 3 | Derivative assets | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
At 1 January, derivative assets	0	5
Exchange and other adjustments	0	0
Losses (gains) recognised in the income statement within other income	1	0
(Sales) redemptions	0	0
Transfers into the level 3 portfolio	13	0
Transfers out of the level 3 portfolio	0	(5)
At 31 December, derivative assets	(14)	0	5
Level 3 | Derivative assets | The Bank | Change in fair value of assets or liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
Losses (gains) recognised in the income statement within other income	(1)	0
Level 3 | Derivative liabilities | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
At 1 January, derivative liabilities	(297)	(8)
Exchange and other adjustments	0	0
Losses (gains) recognised in the income statement within other income	0	0
(Sales) redemptions	19	47
Transfers into the level 3 portfolio	(41)	(344)
Transfers out of the level 3 portfolio	0	(8)
At 31 December, derivative liabilities	(319)	(297)	(8)
Level 3 | Derivative liabilities | The Group | Change in fair value of assets or liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
Losses (gains) recognised in the income statement within other income	0	0
Level 3 | Derivative liabilities | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
At 1 January, derivative liabilities	0	(8)
Exchange and other adjustments	0	0
Losses (gains) recognised in the income statement within other income	(8)	0
(Sales) redemptions	0	0
Transfers into the level 3 portfolio	(52)	0
Transfers out of the level 3 portfolio	0	8
At 31 December, derivative liabilities	60	0	£ (8)
Level 3 | Derivative liabilities | The Bank | Change in fair value of assets or liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items]
Losses (gains) recognised in the income statement within other income	£ (8)	£ 0

FINANCIAL INSTRUMENTS (Detail_9

FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustment Movements - The Group - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustment Movements [Line Items]
At 1 January	£ 214	£ 272
Income statement charge (credit)	28	(56)
Transfers	0	(2)
At 31 December	£ 242	£ 214

FINANCIAL INSTRUMENTS (Detai_10

FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustments - The Group - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustments [Line Items]
Valuation Adjustment	£ 242	£ 214	£ 272
Credit Valuation Adjustment
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustments [Line Items]
Valuation Adjustment	178	141
Debit Valuation Adjustment
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustments [Line Items]
Valuation Adjustment	(6)	(5)
Funding Valuation Adjustment
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Adjustments [Line Items]
Valuation Adjustment	£ 70	£ 78

FINANCIAL INSTRUMENTS (Detai_11

FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations £ in Millions	Dec. 31, 2020GBP (£)	Dec. 31, 2019GBP (£)
Interest rate spreads | Minimum | Financial liabilities at fair value through profit or loss, category
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	(0.0050)	(0.0050)
Interest rate spreads | Maximum | Financial liabilities at fair value through profit or loss, category
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	0.0050	0.0050
Interest rate volatility | Minimum | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	0.33
Interest rate volatility | Maximum | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	0.60
Interest rate volatility | Favourable changes | Option pricing model | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	£ 0	£ 0
Interest rate volatility | Unfavourable changes | Option pricing model | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	£ 0	£ 0
Housing Price Index | Minimum | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	(0.01)	(0.05)
Housing Price Index | Maximum | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	0.01	0.05
Housing Price Index | Favourable changes | Market values – property valuation | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	£ 24	£ 17
Housing Price Index | Unfavourable changes | Market values – property valuation | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	£ (22)	£ (17)
Financial assets at fair value through profit or loss | Interest rate spreads | Minimum
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, assets	(0.0050)	0.0050
Financial assets at fair value through profit or loss | Interest rate spreads | Maximum
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, assets	0.0106	0.0102
Financial assets at fair value through profit or loss | Interest rate spreads | Favourable changes | Discounted cash flows
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Loans and advances to customers	£ 47	£ 36
Financial assets at fair value through profit or loss | Interest rate spreads | Favourable changes | Discounted cash flows | Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Financial liabilities at fair value through profit or loss	1	1
Financial assets at fair value through profit or loss | Interest rate spreads | Unfavourable changes | Discounted cash flows
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Loans and advances to customers	(45)	(39)
Financial assets at fair value through profit or loss | Interest rate spreads | Unfavourable changes | Discounted cash flows | Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Financial liabilities at fair value through profit or loss	(1)	£ (1)
Financial assets at fair value through profit or loss | Credit spreads
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, assets		0.03
Financial assets at fair value through profit or loss | Credit spreads | Favourable changes | Discounted cash flows
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Debt securities	0
Financial assets at fair value through profit or loss | Credit spreads | Unfavourable changes | Discounted cash flows
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Debt securities	0
Financial assets at fair value through other comprehensive income | Favourable changes | Lead manager or broker quote/consensus pricing
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Asset-backed securities	4	£ 4
Financial assets at fair value through other comprehensive income | Unfavourable changes | Lead manager or broker quote/consensus pricing
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Asset-backed securities	£ (4)	(4)
Derivative assets | Interest rate volatility | Minimum
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	0.13
Derivative assets | Interest rate volatility | Maximum
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Significant unobservable input, liabilities	1.28
Derivative assets | Interest rate volatility | Favourable changes | Option pricing model
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	£ 0	0
Derivative assets | Interest rate volatility | Unfavourable changes | Option pricing model
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	0	0
Cost or valuation | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	319	297
Cost or valuation | Level 3 | Financial liabilities at fair value through profit or loss, category
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Level 3 financial liabilities carried at fair value	364	344
Cost or valuation | Interest rate volatility | Option pricing model | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	48	0
Cost or valuation | Housing Price Index | Market values – property valuation | Derivative liabilities
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	271	297
Cost or valuation | Financial assets at fair value through profit or loss
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Total	1,511	1,829
Cost or valuation | Financial assets at fair value through profit or loss | Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Level 3 financial assets carried at fair value	1,590	1,889
Cost or valuation | Financial assets at fair value through profit or loss | Interest rate spreads | Discounted cash flows
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Loans and advances to customers	1,511	1,782
Cost or valuation | Financial assets at fair value through profit or loss | Interest rate spreads | Discounted cash flows | Level 3
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Financial liabilities at fair value through profit or loss	45	47
Cost or valuation | Financial assets at fair value through profit or loss | Credit spreads | Discounted cash flows
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Debt securities	0	47
Cost or valuation | Financial assets at fair value through other comprehensive income
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Financial assets at fair value through other comprehensive income	65	60
Cost or valuation | Financial assets at fair value through other comprehensive income | Lead manager or broker quote/consensus pricing
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Asset-backed securities	65	60
Cost or valuation | Derivative assets
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	14	0
Cost or valuation | Derivative assets | Interest rate volatility | Option pricing model
FINANCIAL INSTRUMENTS (Details) - Schedule of Sensitivity of Level 3 Valuations [Line Items]
Interest rate derivatives	£ 14	£ 0

FINANCIAL INSTRUMENTS (Detai_12

FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	£ 480,141	£ 474,470
Loans and advances to banks	5,950	4,852	£ 3,692
Debt securities	5,137	5,325
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	178,269	177,569
Loans and advances to banks	5,656	4,453	£ 3,153
Debt securities	4,315	5,241
Level 1 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	0	0
Loans and advances to banks	0	0
Debt securities	0	0
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	0	0
Level 1 | The Group | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	0	0
Loans and advances to banks	0	0
Level 1 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	0	0
Loans and advances to banks	0	0
Debt securities	0	0
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	0	0
Level 1 | The Bank | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	0	0
Loans and advances to banks	0	0
Level 2 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Debt securities	5,129	5,317
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	0	0
Level 2 | The Group | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Level 2 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Debt securities	4,315	5,242
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	0	0
Level 2 | The Bank | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Level 3 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	425,071	423,504
Loans and advances to banks	4,323	4,441
Debt securities	0	0
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	738	1,854
Level 3 | The Group | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	0	0
Loans and advances to banks	0	0
Level 3 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	122,076	123,576
Loans and advances to banks	4,029	4,042
Debt securities	0	0
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	128,771	202,277
Level 3 | The Bank | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	0	0
Loans and advances to banks	0	0
Cost or valuation | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	480,141	474,470
Loans and advances to banks	5,950	4,852
Debt securities	5,137	5,325
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	738	1,854
Cost or valuation | The Group | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Cost or valuation | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	178,269	177,569
Loans and advances to banks	5,656	4,453
Debt securities	4,315	5,241
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	128,771	202,277
Cost or valuation | The Bank | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Fair value | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	479,518	475,128
Loans and advances to banks	5,949	4,849
Debt securities	5,129	5,317
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	738	1,854
Fair value | The Group | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	1,626	408
Fair value | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	176,523	175,200
Loans and advances to banks	5,655	4,450
Debt securities	4,315	5,242
Financial assets at amortised cost: due from fellow Lloyds Banking Group undertakings	128,771	202,277
Fair value | The Bank | Reverse repos
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Assets [Line Items]
Loans and advances to customers	54,447	51,624
Loans and advances to banks	£ 1,626	£ 408

FINANCIAL INSTRUMENTS (Detai_13

FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Subordinated liabilities		£ 12,586
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	£ 24,997	23,593
Customer deposits	434,569	396,839
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Debt securities in issue	59,293	76,431
Subordinated liabilities	9,242	12,586	£ 12,745
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Debt securities in issue	48,109	61,509
Subordinated liabilities	7,751	9,909	£ 9,528
Level 1 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Due to fellow Lloyds Banking Group undertakings	0	0
Debt securities in issue	0	0
Subordinated liabilities	0	0
Level 1 | The Group | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Level 1 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Due to fellow Lloyds Banking Group undertakings	0	0
Debt securities in issue	0	0
Subordinated liabilities	0	0
Level 1 | The Bank | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Level 2 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	24,998	23,497
Customer deposits	427,663	391,987
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Debt securities in issue	62,931	78,632
Subordinated liabilities	10,275	14,542
Level 2 | The Group | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	18,767	18,105
Customer deposits	9,417	9,530
Level 2 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	10,304	7,025
Customer deposits	264,497	239,952
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Debt securities in issue	50,824	63,483
Subordinated liabilities	8,387	10,974
Level 2 | The Bank | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	5,087	2,645
Customer deposits	9,417	9,530
Level 3 | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	7,077	5,235
Due to fellow Lloyds Banking Group undertakings	0	0
Debt securities in issue	0	0
Subordinated liabilities	0	0
Level 3 | The Group | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Level 3 | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Due to fellow Lloyds Banking Group undertakings	0	0
Debt securities in issue	0	0
Subordinated liabilities	0	0
Level 3 | The Bank | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	0	0
Customer deposits	0	0
Cost or valuation | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	24,997	23,593
Customer deposits	434,569	396,839
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Debt securities in issue	59,293	76,431
Subordinated liabilities	9,242	12,586
Cost or valuation | The Group | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	18,767	18,105
Customer deposits	9,417	9,530
Cost or valuation | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Debt securities in issue	48,109	61,509
Subordinated liabilities	7,751	9,909
Cost or valuation | The Bank | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	5,087	2,645
Customer deposits	9,417	9,530
Fair value | The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	24,998	23,497
Customer deposits	434,740	397,222
Due to fellow Lloyds Banking Group undertakings	6,875	4,893
Debt securities in issue	62,931	78,632
Subordinated liabilities	10,275	14,542
Fair value | The Group | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	18,767	18,105
Customer deposits	9,417	9,530
Fair value | The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	10,304	7,025
Customer deposits	264,497	239,952
Due to fellow Lloyds Banking Group undertakings	39,836	109,771
Debt securities in issue	50,824	63,483
Subordinated liabilities	8,387	10,974
Fair value | The Bank | Repurchase agreements
FINANCIAL INSTRUMENTS (Details) - Schedule of Valuation Hierarchy for Financial Liabilities [Line Items]
Deposits from banks	5,087	2,645
Customer deposits	£ 9,417	£ 9,530

TRANSFERS OF FINANCIAL ASSETS_2

TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transferred Assets and Liabilities - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transfered Assets and Liabilities [Line Items]
Financial assets at fair value through profit or loss	£ 1,674	£ 2,284
Financial assets at fair value through other comprehensive income	27,260	24,617
Financial assets at amortised cost:
Loans and advances to customers	480,141	474,470
The Group | Securitisations
Financial assets at amortised cost:
Excluded securitisation notes held by the group	27,418	31,396
The Bank
TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transfered Assets and Liabilities [Line Items]
Financial assets at fair value through profit or loss	1,724	703
Financial assets at fair value through other comprehensive income	24,647	22,160
Financial assets at amortised cost:
Loans and advances to customers	178,269	177,569
Carrying value of transferred assets | Repurchase and securities lending transactions | The Group
TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transfered Assets and Liabilities [Line Items]
Financial assets at fair value through profit or loss	0	3,123
Financial assets at fair value through other comprehensive income	7,475
Financial assets at fair value through other comprehensive income		5,436
Carrying value of transferred assets | Repurchase and securities lending transactions | The Bank
TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transfered Assets and Liabilities [Line Items]
Financial assets at fair value through profit or loss	3,244	655
Financial assets at fair value through other comprehensive income	4,889
Financial assets at fair value through other comprehensive income		7,552
Carrying value of transferred assets | Securitisation programmes | The Group
Financial assets at amortised cost:
Loans and advances to customers	34,584	42,545
Carrying value of transferred assets | Securitisation programmes | The Bank
Financial assets at amortised cost:
Loans and advances to customers	4,072	6,433
Carrying value of associated liabilities | Repurchase and securities lending transactions | The Group
TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transfered Assets and Liabilities [Line Items]
Financial assets at fair value through profit or loss	0	2,668
Financial assets at fair value through other comprehensive income	5,105
Financial assets at fair value through other comprehensive income		4,560
Carrying value of associated liabilities | Repurchase and securities lending transactions | The Bank
TRANSFERS OF FINANCIAL ASSETS (Details) - Schedule of Transfered Assets and Liabilities [Line Items]
Financial assets at fair value through profit or loss	1,869	21
Financial assets at fair value through other comprehensive income	3,895
Financial assets at fair value through other comprehensive income		6,065
Carrying value of associated liabilities | Securitisation programmes | The Group
Financial assets at amortised cost:
Loans and advances to customers	4,481	7,376
Carrying value of associated liabilities | Securitisation programmes | The Bank
Financial assets at amortised cost:
Loans and advances to customers	£ 0	£ 0

OFFSETTING OF FINANCIAL ASSET_3

OFFSETTING OF FINANCIAL ASSETS AND LIABILITIES (Details) - Schedule of Offsetting of Financial Assets and Liabilities - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Gross assets and liabilities
Financial assets
Financial assets at fair value through other comprehensive income	£ 27,260	£ 24,617
Financial liabilities
Financial liabilities at fair value through profit or loss		12,167
Gross assets and liabilities | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	6,831
Gross assets and liabilities | Deposits from banks:
Financial liabilities
Deposits from banks	25,005	23,593
Gross assets and liabilities | Customer deposits
Financial liabilities
Customer deposits	441,700	398,708
Gross assets and liabilities | Derivative liabilities
Financial liabilities
Derivative financial instruments	66,003	61,328
Gross assets and liabilities | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	1,674	2,284
Gross assets and liabilities | Derivative assets
Financial assets
Derivative financial instruments	67,428	61,860
Gross assets and liabilities | Loans and advances to banks
Financial assets
Loans and advances to banks	5,958	4,852
Gross assets and liabilities | Loans and advances to customers
Financial assets
Loans and advances to customers	485,960	478,935
Gross assets and liabilities | Debt securities
Financial assets
Debt securities	5,137	5,325
Gross assets and liabilities | Excluding reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	1,674	2,284
Gross assets and liabilities | Excluding reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	4,324	4,444
Gross assets and liabilities | Excluding reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	426,104	422,846
Gross assets and liabilities | Reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Gross assets and liabilities | Reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	1,634	408
Gross assets and liabilities | Reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	59,856	56,089
Gross assets and liabilities | Excluding repos
Financial liabilities
Financial liabilities at fair value through profit or loss		7,702
Gross assets and liabilities | Excluding repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	6,831
Gross assets and liabilities | Excluding repos | Deposits from banks:
Financial liabilities
Deposits from banks	6,230	5,488
Gross assets and liabilities | Excluding repos | Customer deposits
Financial liabilities
Customer deposits	426,874	389,178
Gross assets and liabilities | Repos
Financial liabilities
Financial liabilities at fair value through profit or loss		4,465
Gross assets and liabilities | Repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Gross assets and liabilities | Repos | Deposits from banks:
Financial liabilities
Deposits from banks	18,775	18,105
Gross assets and liabilities | Repos | Customer deposits
Financial liabilities
Customer deposits	14,826	9,530
Offset
Financial assets
Financial assets at fair value through other comprehensive income	0	0
Financial liabilities
Financial liabilities at fair value through profit or loss		4,465
Offset | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Offset | Deposits from banks:
Financial liabilities
Deposits from banks	8	0
Offset | Customer deposits
Financial liabilities
Customer deposits	7,131	1,869
Offset | Derivative liabilities
Financial liabilities
Derivative financial instruments	57,775	51,497
Offset | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Offset | Derivative assets
Financial assets
Derivative financial instruments	59,087	53,366
Offset | Loans and advances to banks
Financial assets
Loans and advances to banks	8	0
Offset | Loans and advances to customers
Financial assets
Loans and advances to customers	5,819	4,465
Offset | Debt securities
Financial assets
Debt securities	0	0
Offset | Excluding reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Offset | Excluding reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	0	0
Offset | Excluding reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	410	0
Offset | Reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Offset | Reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	8	0
Offset | Reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	5,409	4,465
Offset | Excluding repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Offset | Excluding repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Offset | Excluding repos | Deposits from banks:
Financial liabilities
Deposits from banks	0	0
Offset | Excluding repos | Customer deposits
Financial liabilities
Customer deposits	1,722	1,869
Offset | Repos
Financial liabilities
Financial liabilities at fair value through profit or loss		4,465
Offset | Repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Offset | Repos | Deposits from banks:
Financial liabilities
Deposits from banks	8	0
Offset | Repos | Customer deposits
Financial liabilities
Customer deposits	5,409	0
Net amount recognised in the balance sheet
Financial assets
Financial assets at fair value through other comprehensive income	27,260	24,617
Financial liabilities
Financial liabilities at fair value through profit or loss		7,702
Net amount recognised in the balance sheet | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	6,831
Net amount recognised in the balance sheet | Deposits from banks:
Financial liabilities
Deposits from banks	24,997	23,593
Net amount recognised in the balance sheet | Customer deposits
Financial liabilities
Customer deposits	434,569	396,839
Net amount recognised in the balance sheet | Derivative liabilities
Financial liabilities
Derivative financial instruments	8,228	9,831
Net amount recognised in the balance sheet | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	1,674	2,284
Net amount recognised in the balance sheet | Derivative assets
Financial assets
Derivative financial instruments	8,341	8,494
Net amount recognised in the balance sheet | Loans and advances to banks
Financial assets
Loans and advances to banks	5,950	4,852
Net amount recognised in the balance sheet | Loans and advances to customers
Financial assets
Loans and advances to customers	480,141	474,470
Net amount recognised in the balance sheet | Debt securities
Financial assets
Debt securities	5,137	5,325
Net amount recognised in the balance sheet | Excluding reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	1,674	2,284
Net amount recognised in the balance sheet | Excluding reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	4,324	4,444
Net amount recognised in the balance sheet | Excluding reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	425,694	422,846
Net amount recognised in the balance sheet | Reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Net amount recognised in the balance sheet | Reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	1,626	408
Net amount recognised in the balance sheet | Reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	54,447	51,624
Net amount recognised in the balance sheet | Excluding repos
Financial liabilities
Financial liabilities at fair value through profit or loss		7,702
Net amount recognised in the balance sheet | Excluding repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	6,831
Net amount recognised in the balance sheet | Excluding repos | Deposits from banks:
Financial liabilities
Deposits from banks	6,230	5,488
Net amount recognised in the balance sheet | Excluding repos | Customer deposits
Financial liabilities
Customer deposits	425,152	387,309
Net amount recognised in the balance sheet | Repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Net amount recognised in the balance sheet | Repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Net amount recognised in the balance sheet | Repos | Deposits from banks:
Financial liabilities
Deposits from banks	18,767	18,105
Net amount recognised in the balance sheet | Repos | Customer deposits
Financial liabilities
Customer deposits	9,417	9,530
Cash collateral received/ pledged
Financial assets
Financial assets at fair value through other comprehensive income	0	0
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Cash collateral received/ pledged | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Cash collateral received/ pledged | Deposits from banks:
Financial liabilities
Deposits from banks	2,351	1,684
Cash collateral received/ pledged | Customer deposits
Financial liabilities
Customer deposits	350	501
Cash collateral received/ pledged | Derivative liabilities
Financial liabilities
Derivative financial instruments	1,860	2,168
Cash collateral received/ pledged | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Cash collateral received/ pledged | Derivative assets
Financial assets
Derivative financial instruments	2,702	2,186
Cash collateral received/ pledged | Loans and advances to banks
Financial assets
Loans and advances to banks	1,023	1,288
Cash collateral received/ pledged | Loans and advances to customers
Financial assets
Loans and advances to customers	837	879
Cash collateral received/ pledged | Debt securities
Financial assets
Debt securities	0	0
Cash collateral received/ pledged | Excluding reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Cash collateral received/ pledged | Excluding reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	1,023	1,288
Cash collateral received/ pledged | Excluding reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	837	879
Cash collateral received/ pledged | Reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Cash collateral received/ pledged | Reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	0	0
Cash collateral received/ pledged | Reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	0	0
Cash collateral received/ pledged | Excluding repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Cash collateral received/ pledged | Excluding repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Cash collateral received/ pledged | Excluding repos | Deposits from banks:
Financial liabilities
Deposits from banks	2,351	1,684
Cash collateral received/ pledged | Excluding repos | Customer deposits
Financial liabilities
Customer deposits	350	501
Cash collateral received/ pledged | Repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Cash collateral received/ pledged | Repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Cash collateral received/ pledged | Repos | Deposits from banks:
Financial liabilities
Deposits from banks	0	0
Cash collateral received/ pledged | Repos | Customer deposits
Financial liabilities
Customer deposits	0	0
Non-cash collateral received/ pledged
Financial assets
Financial assets at fair value through other comprehensive income	5,132	5,948
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Non-cash collateral received/ pledged | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Non-cash collateral received/ pledged | Deposits from banks:
Financial liabilities
Deposits from banks	18,767	18,105
Non-cash collateral received/ pledged | Customer deposits
Financial liabilities
Customer deposits	12,179	12,322
Non-cash collateral received/ pledged | Derivative liabilities
Financial liabilities
Derivative financial instruments	4,849	5,020
Non-cash collateral received/ pledged | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	21
Non-cash collateral received/ pledged | Derivative assets
Financial assets
Derivative financial instruments	3,555	4,177
Non-cash collateral received/ pledged | Loans and advances to banks
Financial assets
Loans and advances to banks	1,626	3,200
Non-cash collateral received/ pledged | Loans and advances to customers
Financial assets
Loans and advances to customers	57,209	51,624
Non-cash collateral received/ pledged | Debt securities
Financial assets
Debt securities	0	211
Non-cash collateral received/ pledged | Excluding reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	21
Non-cash collateral received/ pledged | Excluding reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	0	2,792
Non-cash collateral received/ pledged | Excluding reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	2,762	0
Non-cash collateral received/ pledged | Reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Non-cash collateral received/ pledged | Reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	1,626	408
Non-cash collateral received/ pledged | Reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	54,447	51,624
Non-cash collateral received/ pledged | Excluding repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Non-cash collateral received/ pledged | Excluding repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Non-cash collateral received/ pledged | Excluding repos | Deposits from banks:
Financial liabilities
Deposits from banks	0	0
Non-cash collateral received/ pledged | Excluding repos | Customer deposits
Financial liabilities
Customer deposits	2,762	2,792
Non-cash collateral received/ pledged | Repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Non-cash collateral received/ pledged | Repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Non-cash collateral received/ pledged | Repos | Deposits from banks:
Financial liabilities
Deposits from banks	18,767	18,105
Non-cash collateral received/ pledged | Repos | Customer deposits
Financial liabilities
Customer deposits	9,417	9,530
Potential net amounts if offset of related amounts permitted
Financial assets
Financial assets at fair value through other comprehensive income	22,128	18,669
Financial liabilities
Financial liabilities at fair value through profit or loss		7,702
Potential net amounts if offset of related amounts permitted | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	6,831
Potential net amounts if offset of related amounts permitted | Deposits from banks:
Financial liabilities
Deposits from banks	3,879	3,804
Potential net amounts if offset of related amounts permitted | Customer deposits
Financial liabilities
Customer deposits	422,040	384,016
Potential net amounts if offset of related amounts permitted | Derivative liabilities
Financial liabilities
Derivative financial instruments	1,519	2,643
Potential net amounts if offset of related amounts permitted | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	1,674	2,263
Potential net amounts if offset of related amounts permitted | Derivative assets
Financial assets
Derivative financial instruments	2,084	2,131
Potential net amounts if offset of related amounts permitted | Loans and advances to banks
Financial assets
Loans and advances to banks	3,301	364
Potential net amounts if offset of related amounts permitted | Loans and advances to customers
Financial assets
Loans and advances to customers	422,095	421,967
Potential net amounts if offset of related amounts permitted | Debt securities
Financial assets
Debt securities	5,137	5,114
Potential net amounts if offset of related amounts permitted | Excluding reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	1,674	2,263
Potential net amounts if offset of related amounts permitted | Excluding reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	3,301	364
Potential net amounts if offset of related amounts permitted | Excluding reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	422,095	421,967
Potential net amounts if offset of related amounts permitted | Reverse repos | Financial assets at fair value through profit or loss
Financial assets
Financial assets at fair value through profit or loss	0	0
Potential net amounts if offset of related amounts permitted | Reverse repos | Loans and advances to banks
Financial assets
Loans and advances to banks	0	0
Potential net amounts if offset of related amounts permitted | Reverse repos | Loans and advances to customers
Financial assets
Loans and advances to customers	0	0
Potential net amounts if offset of related amounts permitted | Excluding repos
Financial liabilities
Financial liabilities at fair value through profit or loss		7,702
Potential net amounts if offset of related amounts permitted | Excluding repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	6,831
Potential net amounts if offset of related amounts permitted | Excluding repos | Deposits from banks:
Financial liabilities
Deposits from banks	3,879	3,804
Potential net amounts if offset of related amounts permitted | Excluding repos | Customer deposits
Financial liabilities
Customer deposits	422,040	384,016
Potential net amounts if offset of related amounts permitted | Repos
Financial liabilities
Financial liabilities at fair value through profit or loss		0
Potential net amounts if offset of related amounts permitted | Repos | Financial liabilities at fair value through profit or loss, category
Financial liabilities
Financial liabilities at fair value through profit or loss	0
Potential net amounts if offset of related amounts permitted | Repos | Deposits from banks:
Financial liabilities
Deposits from banks	0	0
Potential net amounts if offset of related amounts permitted | Repos | Customer deposits
Financial liabilities
Customer deposits	£ 0	£ 0

FINANCIAL RISK MANAGEMENT (Deta

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	£ 5,950	£ 4,852	£ 3,692
Loans and advances to customers	480,141	474,470
Debt securities, net	5,137	5,325
Financial assets at amortised cost	491,966	486,501
Financial assets at fair value through profit or loss	1,674	2,284
Derivative financial instruments	8,341	8,494
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	5,656	4,453	£ 3,153
Loans and advances to customers	178,269	177,569
Debt securities, net	4,315	5,241
Financial assets at amortised cost	317,011	389,540
Financial assets at fair value through profit or loss	1,724	703
Derivative financial instruments	12,595	13,638
Maximum exposure | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	5,950	4,852
Loans and advances to customers	480,141	474,470
Debt securities, net	5,137	5,325
Financial assets at amortised cost	491,228	484,647
Financial assets at fair value through other comprehensive income	27,260	24,617
Financial assets at fair value through profit or loss	1,511	2,119
Derivative financial instruments	8,341	8,494
Off-balance sheet items:
Acceptances and endorsements	73	17
Other items serving as direct credit substitutes	221	279
Performance bonds, including letters of credit, and other transaction-related contingencies	2,070	2,274
Irrevocable commitments and guarantees	59,240	46,629
Off -balance sheet items	61,604	49,199
Maximum exposure to credit risk	589,944	569,076
Maximum exposure | The Group | Loans and advances
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	1,511	1,782
Maximum exposure | The Group | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	0	337
Maximum exposure | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	5,656	4,453
Loans and advances to customers	178,269	177,569
Debt securities, net	4,315	5,241
Financial assets at amortised cost	188,240	187,263
Financial assets at fair value through other comprehensive income	24,647	22,160
Financial assets at fair value through profit or loss	1,720	699
Derivative financial instruments	12,595	13,638
Off-balance sheet items:
Acceptances and endorsements	73	16
Other items serving as direct credit substitutes	203	259
Performance bonds, including letters of credit, and other transaction-related contingencies	1,817	2,014
Irrevocable commitments and guarantees	32,847	27,672
Off -balance sheet items	34,940	29,961
Maximum exposure to credit risk	262,142	253,721
Maximum exposure | The Bank | Loans and advances
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	517	362
Maximum exposure | The Bank | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	1,203	337
Offset | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	0	0
Loans and advances to customers	(2,762)	(2,792)
Debt securities, net	0	0
Financial assets at amortised cost	(2,762)	(2,792)
Financial assets at fair value through other comprehensive income	0	0
Financial assets at fair value through profit or loss	0	0
Derivative financial instruments	(3,373)	(4,177)
Off-balance sheet items:
Acceptances and endorsements	0	0
Other items serving as direct credit substitutes	0	0
Performance bonds, including letters of credit, and other transaction-related contingencies	0	0
Irrevocable commitments and guarantees	0	0
Off -balance sheet items	0	0
Maximum exposure to credit risk	(6,135)	(6,969)
Offset | The Group | Loans and advances
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	0	0
Offset | The Group | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	0	0
Offset | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	0	0
Loans and advances to customers	(2,156)	(2,123)
Debt securities, net	0	0
Financial assets at amortised cost	(2,156)	(2,123)
Financial assets at fair value through other comprehensive income	0	0
Financial assets at fair value through profit or loss	0	0
Derivative financial instruments	(2,752)	(3,312)
Off-balance sheet items:
Acceptances and endorsements	0	0
Other items serving as direct credit substitutes	0	0
Performance bonds, including letters of credit, and other transaction-related contingencies	0	0
Irrevocable commitments and guarantees	0	0
Off -balance sheet items	0	0
Maximum exposure to credit risk	(4,908)	(5,435)
Offset | The Bank | Loans and advances
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	0	0
Offset | The Bank | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	0	0
Net exposure | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	5,950	4,852
Loans and advances to customers	477,379	471,678
Debt securities, net	5,137	5,325
Financial assets at amortised cost	488,466	481,855
Financial assets at fair value through other comprehensive income	27,260	24,617
Financial assets at fair value through profit or loss	1,511	2,119
Derivative financial instruments	4,968	4,317
Off-balance sheet items:
Acceptances and endorsements	73	17
Other items serving as direct credit substitutes	221	279
Performance bonds, including letters of credit, and other transaction-related contingencies	2,070	2,274
Irrevocable commitments and guarantees	59,240	46,629
Off -balance sheet items	61,604	49,199
Maximum exposure to credit risk	583,809	562,107
Net exposure | The Group | Loans and advances
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	1,511	1,782
Net exposure | The Group | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	0	337
Net exposure | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Loans and advances to banks, net	5,656	4,453
Loans and advances to customers	176,113	175,446
Debt securities, net	4,315	5,241
Financial assets at amortised cost	186,084	185,140
Financial assets at fair value through other comprehensive income	24,647	22,160
Financial assets at fair value through profit or loss	1,720	699
Derivative financial instruments	9,843	10,326
Off-balance sheet items:
Acceptances and endorsements	73	16
Other items serving as direct credit substitutes	203	259
Performance bonds, including letters of credit, and other transaction-related contingencies	1,817	2,014
Irrevocable commitments and guarantees	32,847	27,672
Off -balance sheet items	34,940	29,961
Maximum exposure to credit risk	257,234	248,286
Net exposure | The Bank | Loans and advances
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	517	362
Net exposure | The Bank | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maximum Credit Exposure [Line Items]
Financial assets at fair value through profit or loss	£ 1,203	£ 337

FINANCIAL RISK MANAGEMENT (De_2

FINANCIAL RISK MANAGEMENT (Details) - Disclosure of Concentration of Exposure - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	£ 480,141	£ 474,470
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	178,269	177,569
Before allowance for impairment losses | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	485,842	477,633
Before allowance for impairment losses | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	180,550	178,742
Allowance for credit losses | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	5,701	3,163
Allowance for credit losses | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	2,281	1,173
Agriculture, forestry and fishing | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	7,835	7,557
Agriculture, forestry and fishing | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	3,039	2,949
Energy and water supply | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	1,274	1,423
Energy and water supply | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	1,189	1,328
Manufacturing | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	4,455	4,869
Manufacturing | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	3,770	3,811
Construction | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	5,046	4,190
Construction | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	4,022	3,255
Transport, distribution and hotels | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	14,229	12,657
Transport, distribution and hotels | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	10,160	8,350
Postal and telecommunications | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	2,261	1,679
Postal and telecommunications | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	1,689	1,130
Property companies | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	25,092	26,736
Property companies | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	21,629	22,982
Financial, business and other services | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	77,271	73,087
Financial, business and other services | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	73,987	68,461
Mortgage offers made | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	305,966	298,294
Mortgage offers made | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	49,574	52,341
Other | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	25,295	29,165
Other | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	8,502	10,060
Lease financing | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	1,047	1,536
Lease financing | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	30	93
Hire purchase | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	16,071	16,440
Hire purchase | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Loans and advances to customers	£ 2,959	£ 3,982
Loans and advances to customers exposure
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Percentage of exposure (in percent)	63.00%
Financial, business and other services exposure
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Concentration of Exposure [Line Items]
Percentage of exposure (in percent)	16.00%

FINANCIAL RISK MANAGEMENT (De_3

FINANCIAL RISK MANAGEMENT (Details) - Disclosure of Credit Quality of Assets, Probability of Default - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
The Group | Stage 2 and Stage 3
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks and customers	£ 22,200	£ 219
The Group | Reverse repos
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	0	0
Partial write off | The Group | Stage 3
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks and customers	179	205
Loans and advances to banks and customers, outstanding	£ 732	£ 1,700
RMS 1-6 | Total Retail | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	0.00%
RMS 1-6 | Total Retail | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	4.50%
RMS 7-9 | Total Retail | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	4.51%
RMS 7-9 | Total Retail | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	14.00%
RMS 10 | Total Retail | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	14.01%
RMS 10 | Total Retail | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	20.00%
RMS 11-13 | Total Retail | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	20.01%
RMS 11-13 | Total Retail | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	99.99%
RMS 14 | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	100.00%
CMS 1-10 | Commercial | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	0.00%
CMS 1-10 | Commercial | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	0.50%
CMS 11-14 | Commercial | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	0.51%
CMS 11-14 | Commercial | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	3.00%
CMS 15-18 | Commercial | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	3.01%
CMS 15-18 | Commercial | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	20.00%
CMS 19 | Commercial | Bottom of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	20.01%
CMS 19 | Commercial | Top of range
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	99.99%
CMS 20-23 | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Probability of default loans and advances to banks and customers (in percent)	100.00%

FINANCIAL RISK MANAGEMENT (De_4

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Drawn and Undrawn Exposures and Expected Credit Losses - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	£ 5,950	£ 4,852	£ 3,692
Loans and advances to customers	480,141	474,470
The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,954	4,852
Loans and advances to customers	485,842	477,633
The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	294,806	289,198
The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	15,109	18,198
The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9,536	10,212
The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	15,201	15,976
The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19,367	10,899
The Group | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	354,019	344,483
The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74,320	79,298
The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	57,503	53,852
The Group | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
Loans and advances to customers	5,701	3,163
The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,024	568
The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	766	469
The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	643	426
The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	498	385
The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	188	113
The Group | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,119	1,961
The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,161	1,175
The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	421	27
The Group | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	400
The Group | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	133,598	116,434
The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19,550	12,393
The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59,998	56,584
The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,931	6,863
The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,660	1,378
The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,882	1,304
The Group | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	90,021	78,522
The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	42,777	37,677
The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	800	235
The Group | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	426	173
The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	157	77
The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	72	35
The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	2
The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	41	14
The Group | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	276	129
The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	149	44
The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,656	4,453	£ 3,153
Loans and advances to customers	178,269	177,569
The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,660	4,453
Loans and advances to customers	180,550	178,742
The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	48,670	51,351
The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,561	4,492
The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,093	5,580
The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	512	1,398
The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8,624	2,507
The Bank | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	66,460	65,328
The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	58,143	60,508
The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	55,947	52,906
The Bank | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
Loans and advances to customers	2,281	1,173
The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	96	79
The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	213	131
The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	356	242
The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	43	70
The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	134	77
The Bank | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	842	599
The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,233	573
The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	206	1
The Bank | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	200
The Bank | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	62,766	52,549
The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,720	1,120
The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	16,264	15,610
The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,831	3,807
The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	101
The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,114	895
The Bank | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22,953	21,533
The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	39,071	30,825
The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	742	191
The Bank | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	245	90
The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	46	22
The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	41	22
The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	34	13
The Bank | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	121	57
The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	122	33
The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
Stage 1 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,954	4,852
Loans and advances to customers	415,608	429,767
Stage 1 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	251,418	257,043
Stage 1 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11,496	16,132
Stage 1 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7,710	8,788
Stage 1 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12,786	13,884
Stage 1 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	17,879	9,904
Stage 1 | The Group | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	301,289	305,751
Stage 1 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,897	70,238
Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	57,422	53,778
Stage 1 | The Group | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 1 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
Loans and advances to customers	1,347	669
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	104	23
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	155	155
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	201	146
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	194	214
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	30	25
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	684	563
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	254	90
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	409	16
Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	400
Stage 1 | The Group | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	125,625	112,517
Stage 1 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19,348	12,243
Stage 1 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,068	54,513
Stage 1 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,355	6,535
Stage 1 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,657	1,374
Stage 1 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,812	1,240
Stage 1 | The Group | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	85,240	75,905
Stage 1 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	39,585	36,377
Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	800	235
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	191	91
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	85	48
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	23	14
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	2
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	16	11
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	130	76
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	60	15
Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
Stage 1 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,660	4,453
Loans and advances to customers	156,189	165,676
Stage 1 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	41,425	46,904
Stage 1 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,540	3,943
Stage 1 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4,125	4,826
Stage 1 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	388	1,098
Stage 1 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7,704	1,965
Stage 1 | The Bank | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,182	58,736
Stage 1 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	44,078	54,068
Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	55,929	52,872
Stage 1 | The Bank | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
Loans and advances to customers	589	238
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	2
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	32	37
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	111	84
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	22
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19	18
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	177	163
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	210	75
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	202	0
Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	200
Stage 1 | The Bank | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	58,627	50,890
Stage 1 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,720	1,120
Stage 1 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14,971	15,149
Stage 1 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,584	3,679
Stage 1 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	97
Stage 1 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,054	839
Stage 1 | The Bank | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21,353	20,884
Stage 1 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	36,532	29,815
Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	742	191
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	102	44
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	20	13
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	8
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	10
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	47	31
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	53	13
Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
Stage 2 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	51,280	28,505
Stage 2 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	29,018	16,935
Stage 2 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,273	1,681
Stage 2 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,519	1,131
Stage 2 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,216	1,942
Stage 2 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,304	845
Stage 2 | The Group | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	37,330	22,534
Stage 2 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13,938	5,925
Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	46
Stage 2 | The Group | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 2 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	2,125	993
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	468	281
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	458	189
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	295	172
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	171	87
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	99	37
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,491	766
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	634	226
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 2 | The Group | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7,619	3,740
Stage 2 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	118	63
Stage 2 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,874	1,996
Stage 2 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	558	320
Stage 2 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	4
Stage 2 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	69	62
Stage 2 | The Group | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4,622	2,445
Stage 2 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,997	1,295
Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	221	77
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	72	29
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	49	21
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	25	3
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	146	53
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	75	24
Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	21,494	10,681
Stage 2 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,677	3,889
Stage 2 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	933	457
Stage 2 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	795	586
Stage 2 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	80	240
Stage 2 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	797	437
Stage 2 | The Bank | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9,282	5,609
Stage 2 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12,200	5,040
Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	32
Stage 2 | The Bank | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	974	435
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56	47
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	141	63
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	161	96
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	16
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	78	24
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	446	246
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	527	189
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 2 | The Bank | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,926	1,635
Stage 2 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,280	448
Stage 2 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	237	123
Stage 2 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	4
Stage 2 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	54
Stage 2 | The Bank | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,576	629
Stage 2 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,350	1,006
Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	135	42
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	26	9
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	28	14
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	20	3
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74	26
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	61	16
Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	6,443	5,647
Stage 3 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,859	1,506
Stage 3 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	340	385
Stage 3 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	307	293
Stage 3 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	199	150
Stage 3 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	184	150
Stage 3 | The Group | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,889	2,484
Stage 3 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,485	3,135
Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	69	28
Stage 3 | The Group | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 3 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	1,968	1,359
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	191	122
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	153	125
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	147	108
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	133	84
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	51
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	683	490
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,273	859
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	10
Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 3 | The Group | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	280	98
Stage 3 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	8
Stage 3 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56	75
Stage 3 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	8
Stage 3 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	2
Stage 3 | The Group | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	85	93
Stage 3 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	195	5
Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	2,867	2,385
Stage 3 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	568	558
Stage 3 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	88	92
Stage 3 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	173	168
Stage 3 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	44	60
Stage 3 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	123	105
Stage 3 | The Bank | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	996	983
Stage 3 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,865	1,400
Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	2
Stage 3 | The Bank | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	718	500
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	32	30
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	31
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	84	62
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	26	32
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	37	35
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	219	190
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	496	309
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
Stage 3 | The Bank | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	213	24
Stage 3 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	13
Stage 3 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	5
Stage 3 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	2
Stage 3 | The Bank | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	20
Stage 3 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	189	4
Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	4
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	4
Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	12,511	13,714
POCI | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12,511	13,714
POCI | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12,511	13,714
POCI | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
POCI | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
Loans and advances to customers	261	142
POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	261	142
POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of drawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	261	142
POCI | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of drawn exposures | Central overlay
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0
POCI | The Group | Gross undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74	79
POCI | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74	79
POCI | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74	79
POCI | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Total Retail
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	272,382	270,522
RMS 1-6 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10,903	15,473
RMS 1-6 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,850	7,774
RMS 1-6 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13,431	14,865
RMS 1-6 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	15,434	10,157
RMS 1-6 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	834	814
RMS 1-6 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	350	206
RMS 1-6 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	132	128
RMS 1-6 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	95	101
RMS 1-6 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	233	233
RMS 1-6 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	38	35
RMS 1-6 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	17
RMS 1-6 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19,456	12,304
RMS 1-6 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	57,738	55,978
RMS 1-6 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,385	6,661
RMS 1-6 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,275	1,181
RMS 1-6 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,695	1,240
RMS 1-6 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	299	235
RMS 1-6 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS 1-6 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	113	65
RMS 1-6 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	15
RMS 1-6 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	2
RMS 1-6 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	11
RMS 1-6 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 1-6 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	45,575	49,876
RMS 1-6 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,611	3,714
RMS 1-6 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,092	4,170
RMS 1-6 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	422	1,211
RMS 1-6 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,361	2,114
RMS 1-6 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	242	299
RMS 1-6 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	32	30
RMS 1-6 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	35	28
RMS 1-6 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	52	54
RMS 1-6 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	25
RMS 1-6 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	20	22
RMS 1-6 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	0
RMS 1-6 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,720	1,120
RMS 1-6 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	15,895	15,421
RMS 1-6 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,513	3,687
RMS 1-6 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	84
RMS 1-6 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	941	839
RMS 1-6 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	242	191
RMS 1-6 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	36	19
RMS 1-6 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	9
RMS 1-6 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	10
RMS 1-6 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 1-6 | Stage 1 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	251,372	257,028
RMS 1-6 | Stage 1 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9,619	14,744
RMS 1-6 | Stage 1 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,559	7,406
RMS 1-6 | Stage 1 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12,035	13,568
RMS 1-6 | Stage 1 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14,952	9,762
RMS 1-6 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	822	768
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	103	23
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	75	103
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	80	84
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	187	203
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19	25
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	16
RMS 1-6 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19,347	12,242
RMS 1-6 | Stage 1 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	54,694	54,216
RMS 1-6 | Stage 1 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,070	6,437
RMS 1-6 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,275	1,181
RMS 1-6 | Stage 1 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,672	1,240
RMS 1-6 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	299	235
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	67	44
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	12
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	2
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	11
RMS 1-6 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 1-6 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	41,423	46,904
RMS 1-6 | Stage 1 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,248	3,568
RMS 1-6 | Stage 1 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,930	4,018
RMS 1-6 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	382	1,076
RMS 1-6 | Stage 1 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,173	1,958
RMS 1-6 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	230	267
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	2
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	22
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	44	47
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	21
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	18
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 1-6 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,720	1,120
RMS 1-6 | Stage 1 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14,814	15,052
RMS 1-6 | Stage 1 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,414	3,619
RMS 1-6 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	84
RMS 1-6 | Stage 1 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	923	839
RMS 1-6 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	242	191
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	17	12
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	7
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	10
RMS 1-6 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 1-6 | Stage 2 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21,010	13,494
RMS 1-6 | Stage 2 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,284	729
RMS 1-6 | Stage 2 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	291	368
RMS 1-6 | Stage 2 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,396	1,297
RMS 1-6 | Stage 2 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	482	395
RMS 1-6 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	46
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	247	183
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	57	25
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	15	17
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	46	30
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19	10
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS 1-6 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	109	62
RMS 1-6 | Stage 2 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,044	1,762
RMS 1-6 | Stage 2 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	315	224
RMS 1-6 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	23	0
RMS 1-6 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	46	21
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	3
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5	0
RMS 1-6 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4,152	2,972
RMS 1-6 | Stage 2 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	363	146
RMS 1-6 | Stage 2 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	162	152
RMS 1-6 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	135
RMS 1-6 | Stage 2 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	188	156
RMS 1-6 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	32
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	28
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	17	6
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	7
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	4
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11	4
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 1-6 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,081	369
RMS 1-6 | Stage 2 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	99	68
RMS 1-6 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	0
RMS 1-6 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19	7
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4	2
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 1-6 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 1-6 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4,076	2,067
RMS 7-9 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,740	1,911
RMS 7-9 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,570	1,684
RMS 7-9 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,194	682
RMS 7-9 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,752	428
RMS 7-9 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	67	39
RMS 7-9 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	204	103
RMS 7-9 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	165	93
RMS 7-9 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	25
RMS 7-9 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	50	26
RMS 7-9 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	2
RMS 7-9 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,235	455
RMS 7-9 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	408	152
RMS 7-9 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	384	197
RMS 7-9 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	176	62
RMS 7-9 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	19	7
RMS 7-9 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22	7
RMS 7-9 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 7-9 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22	3
RMS 7-9 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,444	510
RMS 7-9 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	632	546
RMS 7-9 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,374	973
RMS 7-9 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	76
RMS 7-9 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,400	288
RMS 7-9 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11	7
RMS 7-9 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	34
RMS 7-9 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	86	53
RMS 7-9 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	4
RMS 7-9 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	42	20
RMS 7-9 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	308	156
RMS 7-9 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	234	90
RMS 7-9 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	17
RMS 7-9 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	162	54
RMS 7-9 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	2
RMS 7-9 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	4
RMS 7-9 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	20	3
RMS 7-9 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	46	15
RMS 7-9 | Stage 1 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,603	1,355
RMS 7-9 | Stage 1 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,990	1,321
RMS 7-9 | Stage 1 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	738	314
RMS 7-9 | Stage 1 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,418	8
RMS 7-9 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	66	49
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	99	55
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	10
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	1
RMS 7-9 | Stage 1 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	772	293
RMS 7-9 | Stage 1 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	269	96
RMS 7-9 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	381	193
RMS 7-9 | Stage 1 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	140	0
RMS 7-9 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11	4
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	2
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	0
RMS 7-9 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 7-9 | Stage 1 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	290	363
RMS 7-9 | Stage 1 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,109	774
RMS 7-9 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	22
RMS 7-9 | Stage 1 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,186	7
RMS 7-9 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	14
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56	32
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	154	96
RMS 7-9 | Stage 1 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	160	59
RMS 7-9 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	13
RMS 7-9 | Stage 1 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	131	0
RMS 7-9 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4	1
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	0
RMS 7-9 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4,030	2,052
RMS 7-9 | Stage 2 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,137	556
RMS 7-9 | Stage 2 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	580	363
RMS 7-9 | Stage 2 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	456	368
RMS 7-9 | Stage 2 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	334	420
RMS 7-9 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	66	39
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	138	54
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	66	38
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	33	15
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	39	26
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	1
RMS 7-9 | Stage 2 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	463	162
RMS 7-9 | Stage 2 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	139	56
RMS 7-9 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	4
RMS 7-9 | Stage 2 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	36	62
RMS 7-9 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	3
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	3
RMS 7-9 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,442	510
RMS 7-9 | Stage 2 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	342	183
RMS 7-9 | Stage 2 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	265	199
RMS 7-9 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	54
RMS 7-9 | Stage 2 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	214	281
RMS 7-9 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11	7
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	45	20
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	30	21
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	3
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	32	20
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	154	60
RMS 7-9 | Stage 2 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74	31
RMS 7-9 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	4
RMS 7-9 | Stage 2 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	31	54
RMS 7-9 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4	1
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	3
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	3
RMS 7-9 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 7-9 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	907	414
RMS 10 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	617	137
RMS 10 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	297	129
RMS 10 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	171	99
RMS 10 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	7
RMS 10 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	25	13
RMS 10 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	84	22
RMS 10 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	49	19
RMS 10 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	30	10
RMS 10 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 10 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 10 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	884	31
RMS 10 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	48	13
RMS 10 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	1
RMS 10 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	2
RMS 10 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	137	116
RMS 10 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	96	50
RMS 10 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	166	77
RMS 10 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	17
RMS 10 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	3
RMS 10 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22	8
RMS 10 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	28	12
RMS 10 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	2
RMS 10 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	9
RMS 10 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	30	8
RMS 10 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 10 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5	1
RMS 10 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	274	32
RMS 10 | Stage 1 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	116	44
RMS 10 | Stage 1 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	3
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	4
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	602	3
RMS 10 | Stage 1 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	2
RMS 10 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	12
RMS 10 | Stage 1 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	64	26
RMS 10 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	3
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS 10 | Stage 1 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	1
RMS 10 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	907	414
RMS 10 | Stage 2 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	343	105
RMS 10 | Stage 2 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	181	85
RMS 10 | Stage 2 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	171	99
RMS 10 | Stage 2 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	7
RMS 10 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	25	13
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	70	19
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	36	15
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	30	10
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 10 | Stage 2 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	282	28
RMS 10 | Stage 2 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	35	11
RMS 10 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11	1
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	2
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	137	116
RMS 10 | Stage 2 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	94	38
RMS 10 | Stage 2 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	102	51
RMS 10 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	17
RMS 10 | Stage 2 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	3
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22	7
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	9
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	2
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	8
RMS 10 | Stage 2 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22	7
RMS 10 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4	1
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,071	975
RMS 11-13 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	509	292
RMS 11-13 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	512	332
RMS 11-13 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	206	180
RMS 11-13 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	976	157
RMS 11-13 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	130	46
RMS 11-13 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	193	91
RMS 11-13 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	187	105
RMS 11-13 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	62	33
RMS 11-13 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	1
RMS 11-13 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 11-13 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	85	45
RMS 11-13 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	72	29
RMS 11-13 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 11-13 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
RMS 11-13 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	4
RMS 11-13 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	11
RMS 11-13 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	0
RMS 11-13 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	946	291
RMS 11-13 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	134	90
RMS 11-13 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	288	192
RMS 11-13 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	34
RMS 11-13 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	740	0
RMS 11-13 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	9
RMS 11-13 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	57	30
RMS 11-13 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	106	61
RMS 11-13 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5	7
RMS 11-13 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	35	0
RMS 11-13 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	11
RMS 11-13 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	44	17
RMS 11-13 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
RMS 11-13 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	1
RMS 11-13 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	8
RMS 11-13 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	0
RMS 11-13 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS 11-13 | Stage 1 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	45	17
RMS 11-13 | Stage 1 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	2
RMS 11-13 | Stage 1 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	509	134
RMS 11-13 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	3
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS 11-13 | Stage 1 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	0
RMS 11-13 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 11-13 | Stage 1 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22	8
RMS 11-13 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	345	0
RMS 11-13 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4	2
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS 11-13 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,071	975
RMS 11-13 | Stage 2 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	509	291
RMS 11-13 | Stage 2 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	467	315
RMS 11-13 | Stage 2 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	193	178
RMS 11-13 | Stage 2 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	467	23
RMS 11-13 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	130	46
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	193	91
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	178	102
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	62	32
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	1
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS 11-13 | Stage 2 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	85	44
RMS 11-13 | Stage 2 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	69	29
RMS 11-13 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
RMS 11-13 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	4
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	11
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	0
RMS 11-13 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	946	291
RMS 11-13 | Stage 2 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	134	90
RMS 11-13 | Stage 2 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	266	184
RMS 11-13 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	34
RMS 11-13 | Stage 2 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	395	0
RMS 11-13 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	9
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	57	30
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	102	59
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5	7
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	35	0
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	24	11
RMS 11-13 | Stage 2 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	42	17
RMS 11-13 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
RMS 11-13 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	1
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	8
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	0
RMS 11-13 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 11-13 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14,370	15,220
RMS 14 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	340	385
RMS 14 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	307	293
RMS 14 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	199	150
RMS 14 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	184	150
RMS 14 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	28
RMS 14 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	452	264
RMS 14 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	153	125
RMS 14 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	147	108
RMS 14 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	133	84
RMS 14 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	51
RMS 14 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	10
RMS 14 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	84	87
RMS 14 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56	75
RMS 14 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	8
RMS 14 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	2
RMS 14 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	568	558
RMS 14 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	88	92
RMS 14 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	173	168
RMS 14 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	44	60
RMS 14 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	123	105
RMS 14 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	2
RMS 14 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	32	30
RMS 14 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	31
RMS 14 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	84	62
RMS 14 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	26	32
RMS 14 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	37	35
RMS 14 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS 14 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	13
RMS 14 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	5
RMS 14 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	2
RMS 14 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,859	1,506
RMS 14 | Stage 3 | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	340	385
RMS 14 | Stage 3 | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	307	293
RMS 14 | Stage 3 | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	199	150
RMS 14 | Stage 3 | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	184	150
RMS 14 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	28
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	191	122
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	153	125
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	147	108
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	133	84
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	51
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	10
RMS 14 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	8
RMS 14 | Stage 3 | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56	75
RMS 14 | Stage 3 | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18	8
RMS 14 | Stage 3 | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	2
RMS 14 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	568	558
RMS 14 | Stage 3 | The Bank | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	88	92
RMS 14 | Stage 3 | The Bank | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	173	168
RMS 14 | Stage 3 | The Bank | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	44	60
RMS 14 | Stage 3 | The Bank | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	123	105
RMS 14 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	2
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	32	30
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	40	31
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	84	62
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	26	32
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	37	35
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS 14 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	13
RMS 14 | Stage 3 | The Bank | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	5
RMS 14 | Stage 3 | The Bank | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	2
RMS 14 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12,511	13,714
RMS 14 | POCI | The Group | Gross drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	261	142
RMS 14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	74	79
RMS 14 | POCI | The Group | Gross undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK mortgages
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - credit cards
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - loans and overdrafts
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - UK Motor Finance
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Retail - other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS 14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,951	4,852
CMS 1-10 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22,395	43,460
CMS 1-10 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,362	53,010
CMS 1-10 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
CMS 1-10 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	25	29
CMS 1-10 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	29,039	31,090
CMS 1-10 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	501	0
CMS 1-10 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	7
CMS 1-10 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,660	4,453
CMS 1-10 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	18,082	32,845
CMS 1-10 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	55,595	52,605
CMS 1-10 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
CMS 1-10 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	20	26
CMS 1-10 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	27,598	25,891
CMS 1-10 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	500	0
CMS 1-10 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
CMS 1-10 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 1 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,951	4,852
CMS 1-10 | Stage 1 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22,218	43,104
CMS 1-10 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,362	53,010
CMS 1-10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
CMS 1-10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	23	27
CMS 1-10 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 1 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	29,039	31,014
CMS 1-10 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	501	0
CMS 1-10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	7
CMS 1-10 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 1 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	5,660	4,453
CMS 1-10 | Stage 1 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	17,907	32,465
CMS 1-10 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	55,595	52,605
CMS 1-10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	4	0
CMS 1-10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	20	25
CMS 1-10 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 1 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	27,598	25,847
CMS 1-10 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	500	0
CMS 1-10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
CMS 1-10 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 2 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	177	356
CMS 1-10 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	2
CMS 1-10 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	76
CMS 1-10 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 2 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	175	380
CMS 1-10 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
CMS 1-10 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	44
CMS 1-10 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 3 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 3 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | POCI | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 1-10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 1-10 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	3	0
CMS 11-14 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	36,685	27,653
CMS 11-14 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	236	0
CMS 11-14 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	241	87
CMS 11-14 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11,226	5,955
CMS 11-14 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	47	16
CMS 11-14 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	28,377	22,171
CMS 11-14 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	104	0
CMS 11-14 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	208	73
CMS 11-14 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9,344	4,489
CMS 11-14 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	39	12
CMS 11-14 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 1 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	3	0
CMS 11-14 | Stage 1 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	30,023	25,341
CMS 11-14 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	236	0
CMS 11-14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	135	50
CMS 11-14 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 1 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9,612	5,105
CMS 11-14 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	31	7
CMS 11-14 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 1 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 1 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	22,449	20,141
CMS 11-14 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	104	0
CMS 11-14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	114	40
CMS 11-14 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 1 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8,105	3,771
CMS 11-14 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	26	7
CMS 11-14 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 2 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,662	2,312
CMS 11-14 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	106	37
CMS 11-14 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,614	850
CMS 11-14 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	16	9
CMS 11-14 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 2 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,928	2,030
CMS 11-14 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	94	33
CMS 11-14 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,239	718
CMS 11-14 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	5
CMS 11-14 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 3 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 3 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | POCI | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 11-14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 11-14 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	11,086	4,882
CMS 15-18 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	493	184
CMS 15-18 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2,225	584
CMS 15-18 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	63	14
CMS 15-18 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9,270	3,981
CMS 15-18 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	408	155
CMS 15-18 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,886	403
CMS 15-18 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	54	10
CMS 15-18 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 1 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	4,656	1,793
CMS 15-18 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	96	13
CMS 15-18 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	934	258
CMS 15-18 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	16	1
CMS 15-18 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 1 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,722	1,462
CMS 15-18 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	76	10
CMS 15-18 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	829	197
CMS 15-18 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	13	1
CMS 15-18 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 2 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6,430	3,089
CMS 15-18 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	397	171
CMS 15-18 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,291	326
CMS 15-18 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	47	13
CMS 15-18 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 2 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	5,548	2,519
CMS 15-18 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	332	145
CMS 15-18 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,057	206
CMS 15-18 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	41	9
CMS 15-18 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 3 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 3 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | POCI | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 15-18 | POCI | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 15-18 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	669	168
CMS 19 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
CMS 19 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	129	16
CMS 19 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	92	43
CMS 19 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	2
CMS 19 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	549	111
CMS 19 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	101	10
CMS 19 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	54	38
CMS 19 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	2
CMS 19 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 1 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
CMS 19 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 1 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 2 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	669	168
CMS 19 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	129	16
CMS 19 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	92	43
CMS 19 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	2
CMS 19 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 2 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	549	111
CMS 19 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	101	10
CMS 19 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	54	38
CMS 19 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	7	2
CMS 19 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 3 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 3 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | POCI | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 19 | POCI | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 19 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,485	3,135
CMS 20-23 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
CMS 20-23 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,273	859
CMS 20-23 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	195	5
CMS 20-23 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
CMS 20-23 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,865	1,400
CMS 20-23 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	496	309
CMS 20-23 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	189	4
CMS 20-23 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	4
CMS 20-23 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 1 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 1 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 2 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 2 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 3 | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3,485	3,135
CMS 20-23 | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
CMS 20-23 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,273	859
CMS 20-23 | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	195	5
CMS 20-23 | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	14	5
CMS 20-23 | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Bank | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 3 | The Bank | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1,865	1,400
CMS 20-23 | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	496	309
CMS 20-23 | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Bank | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	189	4
CMS 20-23 | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	8	4
CMS 20-23 | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Gross drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | POCI | The Group | Gross drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Expected credit losses in respect of drawn exposures
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to banks	0	0
CMS 20-23 | POCI | The Group | Expected credit losses in respect of drawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Gross undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Commercial
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS 20-23 | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	893	842
RMS | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	21	27
RMS | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	299	235
RMS | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	248	301
RMS | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	1
RMS | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	242	191
RMS | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	822	768
RMS | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	9	16
RMS | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	299	235
RMS | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	230	267
RMS | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	242	191
RMS | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	2	0
RMS | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	46
RMS | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	1
RMS | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	32
RMS | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	1	0
RMS | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	59	28
RMS | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	12	10
RMS | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	6	2
RMS | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	3	1
RMS | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
RMS | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,610	53,010
CMS | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	501	0
CMS | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	55,699	52,605
CMS | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	500	0
CMS | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 1 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	56,600	53,010
CMS | Stage 1 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 1 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	501	0
CMS | Stage 1 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 1 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	55,699	52,605
CMS | Stage 1 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 1 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	500	0
CMS | Stage 1 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 2 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	10	0
CMS | Stage 3 | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Bank | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Bank | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Bank | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | Stage 3 | The Bank | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | POCI | The Group | Gross drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | POCI | The Group | Expected credit losses in respect of drawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | POCI | The Group | Gross undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	0	0
CMS | POCI | The Group | Expected credit losses in respect of undrawn exposures | Other
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]
Loans and advances to customers	£ 0	£ 0

FINANCIAL RISK MANAGEMENT (De_5

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities Held at Amortised Cost - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
Asset-backed securities:
Net carrying amount	£ 5,137	£ 5,325
The Group | Loans
Asset-backed securities:
Asset-backed securities	3,659	3,808
Corporate and other debt securities	1,479	1,518
The Group | Investment grade | Loans
Asset-backed securities:
Asset-backed securities	3,639	3,808
Corporate and other debt securities	1,463	1,517
The Group | Other | Sub-investment grade
Asset-backed securities:
Net carrying amount	8	0
The Group | Other | Not rated
Asset-backed securities:
Net carrying amount	28	1
The Group | Other | Loans
Asset-backed securities:
Asset-backed securities	20	0
Corporate and other debt securities	16	1
The Bank
Asset-backed securities:
Net carrying amount	4,315	5,241
The Bank | Loans
Asset-backed securities:
Asset-backed securities	2,844	3,724
Corporate and other debt securities	1,472	1,517
Net carrying amount	4,315	5,241
The Bank | Investment grade | Loans
Asset-backed securities:
Asset-backed securities	2,844	3,724
Corporate and other debt securities	1,457	1,517
The Bank | Other | Sub-investment grade
Asset-backed securities:
Net carrying amount	0	0
The Bank | Other | Not rated
Asset-backed securities:
Net carrying amount	15	0
The Bank | Other | Loans
Asset-backed securities:
Asset-backed securities	0	0
Corporate and other debt securities	15	0
Mortgage-backed securities | The Group | Loans
Asset-backed securities:
Asset-backed securities	2,046	2,934
Mortgage-backed securities | The Group | Investment grade | Loans
Asset-backed securities:
Asset-backed securities	2,046	2,934
Mortgage-backed securities | The Group | Other | Loans
Asset-backed securities:
Asset-backed securities	0	0
Mortgage-backed securities | The Bank | Loans
Asset-backed securities:
Asset-backed securities	1,741	2,926
Mortgage-backed securities | The Bank | Investment grade | Loans
Asset-backed securities:
Asset-backed securities	1,741	2,926
Mortgage-backed securities | The Bank | Other | Loans
Asset-backed securities:
Asset-backed securities	0	0
Other asset-backed securities | The Group | Loans
Asset-backed securities:
Asset-backed securities	1,613	874
Other asset-backed securities | The Group | Investment grade | Loans
Asset-backed securities:
Asset-backed securities	1,593	874
Other asset-backed securities | The Group | Other | Loans
Asset-backed securities:
Asset-backed securities	20	0
Other asset-backed securities | The Bank | Loans
Asset-backed securities:
Asset-backed securities	1,103	798
Other asset-backed securities | The Bank | Investment grade | Loans
Asset-backed securities:
Asset-backed securities	1,103	798
Other asset-backed securities | The Bank | Other | Loans
Asset-backed securities:
Asset-backed securities	0	0
Corporate and other debt securities | The Group | Loans
Asset-backed securities:
Gross exposure	5,138	5,326
Allowance for impairment losses	(1)	(1)
Net carrying amount	5,137	5,325
Corporate and other debt securities | The Group | Investment grade | Loans
Asset-backed securities:
Gross exposure	5,102	5,325
Corporate and other debt securities | The Group | Other | Loans
Asset-backed securities:
Gross exposure	36	1
Corporate and other debt securities | The Bank | Loans
Asset-backed securities:
Gross exposure	4,316	5,241
Allowance for impairment losses	(1)	0
Corporate and other debt securities | The Bank | Investment grade | Loans
Asset-backed securities:
Gross exposure	4,301	5,241
Corporate and other debt securities | The Bank | Other | Loans
Asset-backed securities:
Gross exposure	£ 15	£ 0

FINANCIAL RISK MANAGEMENT (De_6

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Financial Assets at Fair Value Through Other Comprehensive Income - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Net carrying amount	£ 5,137	£ 5,325
Total financial assets at fair value through other comprehensive income	27,260	24,617
Level 3 financial assets carried at fair value	37,275	35,395
The Group | Financial assets available-for-sale, category | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Government securities	14,267	13,082
Asset-backed debt instruments held	65	60
Corporate and other debt securities	12,928	11,036
Net carrying amount	27,260	24,178
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	27,260	24,617
The Group | Investment grade | Financial assets available-for-sale, category | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Government securities	14,267	13,082
Asset-backed debt instruments held	0	0
Corporate and other debt securities	12,786	11,036
Net carrying amount	27,053	24,118
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	27,053	24,557
The Group | Other | Sub-investment grade
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Net carrying amount	8	0
Level 3 financial assets carried at fair value	65	60
The Group | Other | Not rated
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Net carrying amount	28	1
Level 3 financial assets carried at fair value	142	0
The Group | Other | Financial assets available-for-sale, category | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Government securities	0	0
Asset-backed debt instruments held	65	60
Corporate and other debt securities	142	0
Net carrying amount	207	60
Treasury and other bills	0	0
Total financial assets at fair value through other comprehensive income	207	60
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Net carrying amount	4,315	5,241
Total financial assets at fair value through other comprehensive income	24,647	22,160
Level 3 financial assets carried at fair value	38,966	36,501
The Bank | Financial assets available-for-sale, category | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Government securities	14,114	12,938
Corporate and other debt securities	10,533	8,783
Net carrying amount	24,647	21,721
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	24,647	22,160
The Bank | Financial assets available-for-sale, category | Including due from fellow Lloyds Banking Group undertakings | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Corporate and other debt securities	0	0
Total financial assets at fair value through other comprehensive income	24,647	22,160
The Bank | Investment grade | Financial assets available-for-sale, category | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Government securities	14,114	12,938
Corporate and other debt securities	10,444	8,783
Net carrying amount	24,558	21,721
Treasury and other bills	0	439
Total financial assets at fair value through other comprehensive income	24,558	22,160
The Bank | Other | Sub-investment grade
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Net carrying amount	0	0
Level 3 financial assets carried at fair value	0	0
The Bank | Other | Not rated
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Net carrying amount	15	0
Level 3 financial assets carried at fair value	89	0
The Bank | Other | Financial assets available-for-sale, category | Excluding equity share
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Available-for-Sale Financial Assets (Excluding Equity Shares) [Line Items]
Government securities	0	0
Corporate and other debt securities	89	0
Net carrying amount	89	0
Treasury and other bills	0	0
Total financial assets at fair value through other comprehensive income	£ 89	£ 0

FINANCIAL RISK MANAGEMENT (De_7

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Total held as trading assets	£ 0	£ 290
Other assets mandatorily at fair value through profit or loss
Total other assets mandatorily at fair value through profit or loss	(1,892)	(2,527)
Total	1,674	2,284
Debt securities	5,137	5,325
The Group | Other | Sub-investment grade
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Total held as trading assets	0	0
Other assets mandatorily at fair value through profit or loss
Debt securities	8	0
The Group | Other | Not rated
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Total held as trading assets	0	0
Other assets mandatorily at fair value through profit or loss
Debt securities	28	1
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Total held as trading assets	0	290
Other assets mandatorily at fair value through profit or loss
Total other assets mandatorily at fair value through profit or loss	(754)	(998)
Total	1,724	703
Debt securities	4,315	5,241
The Bank | Other | Sub-investment grade
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Total held as trading assets	0	0
Other assets mandatorily at fair value through profit or loss
Debt securities	0	0
The Bank | Other | Not rated
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Total held as trading assets	0	0
Other assets mandatorily at fair value through profit or loss
Debt securities	15	0
Treasury shares | The Group
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	0
Total	0	337
Debt securities	0	337
Treasury shares | The Group | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Government securities	0	290
Total held as trading assets	0	290
Treasury shares | The Group | Other assets held at fair value through profit or loss
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	47
Total other assets mandatorily at fair value through profit or loss	0	(47)
Treasury shares | The Group | Investment grade
Other assets mandatorily at fair value through profit or loss
Total	0	337
Treasury shares | The Group | Investment grade | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Government securities	0	290
Total held as trading assets	0	290
Treasury shares | The Group | Investment grade | Other assets held at fair value through profit or loss
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	47
Total other assets mandatorily at fair value through profit or loss	0	(47)
Treasury shares | The Group | Other
Other assets mandatorily at fair value through profit or loss
Total	0	0
Treasury shares | The Group | Other | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Government securities	0	0
Total held as trading assets	0	0
Treasury shares | The Group | Other | Other assets held at fair value through profit or loss
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	0
Total other assets mandatorily at fair value through profit or loss	0	0
Treasury shares | The Bank
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	1,203	0
Total	0	337
Debt securities	1,203	337
Treasury shares | The Bank | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Government securities	0	290
Total held as trading assets	0	290
Treasury shares | The Bank | Other assets held at fair value through profit or loss
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	47
Total other assets mandatorily at fair value through profit or loss	0	(47)
Treasury shares | The Bank | Investment grade
Other assets mandatorily at fair value through profit or loss
Total	0	337
Treasury shares | The Bank | Investment grade | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Government securities	0	290
Total held as trading assets	0	290
Treasury shares | The Bank | Investment grade | Other assets held at fair value through profit or loss
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	47
Total other assets mandatorily at fair value through profit or loss	0	(47)
Treasury shares | The Bank | Other
Other assets mandatorily at fair value through profit or loss
Total	0	0
Treasury shares | The Bank | Other | Debt securities, treasury and other bills
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Debt Securities, Treasury and Other Bills Held at Fair Value Through Profit or Loss [Line Items]
Government securities	0	0
Total held as trading assets	0	0
Treasury shares | The Bank | Other | Other assets held at fair value through profit or loss
Other assets mandatorily at fair value through profit or loss
Corporate and other debt securities	0	0
Total other assets mandatorily at fair value through profit or loss	£ 0	£ 0

FINANCIAL RISK MANAGEMENT (De_8

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	£ 8,341	£ 8,494
Trading and other	6,979	6,798
Hedging	672	1,105
Derivative financial assets not including due from related party undertakings	7,651	7,903
Due from fellow Lloyds Banking Group undertakings	690	591
The Group | Investment grade
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Trading and other	5,942	5,531
Hedging	667	1,047
Derivative financial assets not including due from related party undertakings	6,609	6,578
The Group | Other
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Trading and other	1,037	1,267
Hedging	5	58
Derivative financial assets not including due from related party undertakings	1,042	1,325
The Group | Other | Sub-investment grade
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	969	953
The Group | Other | Not rated
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	73	372
The Group | Net credit risk
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	4,968	4,317
The Group | Cash collateral received/ pledged
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	2,702	2,186
The Group | OECD banks
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	151	120
The Bank
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	12,595	13,638
Trading and other	4,588	4,322
Hedging	240	179
Derivative financial assets not including due from related party undertakings	4,828	4,501
Due from fellow Lloyds Banking Group undertakings	7,767	9,137
The Bank | Investment grade
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Trading and other	4,442	4,113
Hedging	237	178
Derivative financial assets not including due from related party undertakings	4,679	4,291
The Bank | Other
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Trading and other	146	209
Hedging	3	1
Derivative financial assets not including due from related party undertakings	149	210
The Bank | Other | Sub-investment grade
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	135	135
The Bank | Other | Not rated
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	14	75
The Bank | Net credit risk
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	9,843	10,326
The Bank | Cash collateral received/ pledged
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	1,308	786
The Bank | OECD banks
FINANCIAL INSTRUMENTS (Details) - Schedule of Derivatives [Line Items]
Derivative financial instruments	£ 116	£ 66

FINANCIAL RISK MANAGEMENT (De_9

FINANCIAL RISK MANAGEMENT (Details) - Narrative Collateral Held as Security for Financial Assets - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Assets obtained by taking possession of collateral or calling on other credit enhancements	£ 125	£ 413
Retail non-mortgage | Stage 3
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	538	610
Allowance for impairment losses	492	368
Retail non-mortgage | Stage 1 and Stage 2
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	58,183	54,307
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,950	4,852	£ 3,692
Loans and advances to customers	480,141	474,470
Derivative financial instruments	(8,341)	(8,494)
Commitments and guarantees	133,598	116,434
The Group | Net Exposure [Member]
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,950	4,852
Loans and advances to customers	477,379	471,678
Derivative financial instruments	(4,968)	(4,317)
Off -balance sheet items	61,604	49,199
The Group | Maximum exposure
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,950	4,852
Loans and advances to customers	480,141	474,470
Derivative financial instruments	(8,341)	(8,494)
Off -balance sheet items	61,604	49,199
The Group | Irrevocable loan commitments and contingencies
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral sold or repledged in absence of default by owner of collateral, at fair value	19,548	12,391
The Group | Stock borrowing
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	11,925	8,867
The Group | Loans and advances to banks
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	1,040	388
The Group | Reverse repos
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	0	0
The Group | Collateralised loan
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	60,441	50,130
The Group | Commercial loans | Stage 3
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	704	750
Allowance for impairment losses	293	167
The Group | Commercial loans | Stage 3 | Accumulated impairment
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value		744
The Group | Trading & other financial assets at fair value through profit or loss | Stock borrowing
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral sold or repledged in absence of default by owner of collateral, at fair value	10,899	7,630
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,656	4,453	£ 3,153
Loans and advances to customers	178,269	177,569
Derivative financial instruments	(12,595)	(13,638)
Cash collateral received subject to enforceable master netting arrangement or similar agreement not set off against financial assets	1,308	786
Commitments and guarantees	62,766	52,549
The Bank | Net Exposure [Member]
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,656	4,453
Loans and advances to customers	176,113	175,446
Derivative financial instruments	(9,843)	(10,326)
Off -balance sheet items	34,940	29,961
The Bank | Maximum exposure
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,656	4,453
Loans and advances to customers	178,269	177,569
Derivative financial instruments	(12,595)	(13,638)
Off -balance sheet items	34,940	29,961
The Bank | Irrevocable loan commitments and contingencies
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral sold or repledged in absence of default by owner of collateral, at fair value	1,720	1,120
The Bank | Stock borrowing
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	17,391	8,453
The Bank | Collateralised loan
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	55,031	50,130
The Bank | Commercial loans | Stage 3 | Accumulated impairment
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	753
The Bank | Trading & other financial assets at fair value through profit or loss | Stock borrowing
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral sold or repledged in absence of default by owner of collateral, at fair value	16,639	8,178
Net amount recognised in the balance sheet | Loans and advances to banks
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	5,950	4,852
Net amount recognised in the balance sheet | Loans and advances to customers
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	480,141	474,470
Net amount recognised in the balance sheet | Derivative assets
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Derivative financial instruments	(8,341)	(8,494)
Cash collateral received/ pledged | Loans and advances to banks
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	1,023	1,288
Cash collateral received/ pledged | Loans and advances to customers
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	837	879
Cash collateral received/ pledged | Derivative assets
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Derivative financial instruments	(2,702)	(2,186)
Reverse repos | Net amount recognised in the balance sheet | Loans and advances to banks
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	1,626	408
Reverse repos | Net amount recognised in the balance sheet | Loans and advances to customers
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	54,447	51,624
Reverse repos | Cash collateral received/ pledged | Loans and advances to banks
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to banks	0	0
Reverse repos | Cash collateral received/ pledged | Loans and advances to customers
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Loans and advances to customers	£ 0	£ 0

FINANCIAL RISK MANAGEMENT (D_10

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Retail Lending - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	£ 480,141	£ 474,470
The Group | Residential mortgage
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	294,806	289,198
The Group | Residential mortgage | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	221,476	204,615
The Group | Residential mortgage | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	48,510	48,659
The Group | Residential mortgage | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	23,061	28,876
The Group | Residential mortgage | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	892	6,103
The Group | Residential mortgage | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	867	945
The Group | Residential mortgage | Stage 1
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	251,418	257,043
The Group | Residential mortgage | Stage 1 | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	185,548	179,566
The Group | Residential mortgage | Stage 1 | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	43,656	44,384
The Group | Residential mortgage | Stage 1 | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	21,508	27,056
The Group | Residential mortgage | Stage 1 | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	555	5,663
The Group | Residential mortgage | Stage 1 | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	151	374
The Group | Residential mortgage | Stage 2
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	29,018	16,935
The Group | Residential mortgage | Stage 2 | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	24,330	13,147
The Group | Residential mortgage | Stage 2 | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	3,364	2,343
The Group | Residential mortgage | Stage 2 | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	1,009	1,057
The Group | Residential mortgage | Stage 2 | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	126	199
The Group | Residential mortgage | Stage 2 | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	189	189
The Group | Residential mortgage | Stage 3
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	1,859	1,506
The Group | Residential mortgage | Stage 3 | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	1,547	1,174
The Group | Residential mortgage | Stage 3 | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	187	181
The Group | Residential mortgage | Stage 3 | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	74	86
The Group | Residential mortgage | Stage 3 | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	21	34
The Group | Residential mortgage | Stage 3 | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	30	31
The Group | Residential mortgage | POCI
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	12,511	13,714
The Group | Residential mortgage | POCI | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	10,051	10,728
The Group | Residential mortgage | POCI | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	1,303	1,751
The Group | Residential mortgage | POCI | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	470	677
The Group | Residential mortgage | POCI | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	190	207
The Group | Residential mortgage | POCI | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	497	351
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	178,269	177,569
The Bank | Residential mortgage
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	48,670	51,351
The Bank | Residential mortgage | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	42,513	42,482
The Bank | Residential mortgage | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	4,381	5,445
The Bank | Residential mortgage | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	1,567	2,730
The Bank | Residential mortgage | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	145	583
The Bank | Residential mortgage | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	64	111
The Bank | Residential mortgage | Stage 1
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	41,425	46,904
The Bank | Residential mortgage | Stage 1 | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	36,418	39,054
The Bank | Residential mortgage | Stage 1 | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	3,603	4,848
The Bank | Residential mortgage | Stage 1 | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	1,298	2,428
The Bank | Residential mortgage | Stage 1 | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	94	516
The Bank | Residential mortgage | Stage 1 | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	12	58
The Bank | Residential mortgage | Stage 2
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	6,677	3,889
The Bank | Residential mortgage | Stage 2 | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	5,639	3,004
The Bank | Residential mortgage | Stage 2 | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	712	529
The Bank | Residential mortgage | Stage 2 | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	239	264
The Bank | Residential mortgage | Stage 2 | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	42	49
The Bank | Residential mortgage | Stage 2 | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	45	43
The Bank | Residential mortgage | Stage 3
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	568	558
The Bank | Residential mortgage | Stage 3 | Less than 70 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	456	424
The Bank | Residential mortgage | Stage 3 | 70 per cent to 80 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	66	68
The Bank | Residential mortgage | Stage 3 | 80 per cent to 90 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	30	38
The Bank | Residential mortgage | Stage 3 | 90 per cent to 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	9	18
The Bank | Residential mortgage | Stage 3 | Greater than 100 per cent
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Mortgage Lending [Line Items]
Loans and advances to customers	£ 7	£ 10

FINANCIAL RISK MANAGEMENT (D_11

FINANCIAL RISK MANAGEMENT (Details) - Narrative Collateral Pledged as Security £ in Millions, number in Millions	12 Months Ended
	Dec. 31, 2020GBP (£)	Dec. 31, 2019GBP (£)
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Deposits from banks	£ 24,997	£ 23,593
Customer deposits	434,569	396,839
Contract/ notional amount	2,075,682	2,623,228
The Group | Interest rate risk | Fair value hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Hedging instrument, assets	81	467
(Losses) gains on hedging instrument, fair value hedges	(87)	353
Gains (losses) on hedged item attributable to hedged risk, fair value hedges	633	(200)
The Group | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	107,340	102,969
The Group | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments | Sterling LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	£ 103,438	£ 98,278
Nominal amount of hedging instrument	112,027	116,211
The Group | Interest rate risk | Cash flow hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Hedging instrument, assets	£ 28
Hedging instrument, liabilities		£ (393)
Hedge ineffectiveness recognised in the income statement	259	131
The Group | Interest rate risk | Cash flow hedges | Interest rate benchmark reform amendments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	£ 18,107	£ 26,774
Nominal amount of hedging instrument	439,139	576,356
The Group | Interest rate risk | Cash flow hedges | Interest rate benchmark reform amendments | Sterling LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	£ 15,120	£ 23,467
Nominal amount of hedging instrument	294,274	391,417
The Group | Currency risk
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Structural foreign currency exposures	£ 113	£ 52
The Group | Financial assets at fair value through profit or loss
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	0	0
The Group | Hedging
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	506,800	586,287
The Group | Hedging | Fair value hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	185,994	160,976
The Group | Hedging | Cash flow hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	320,806	425,311
The Group | Hedging | Interest rate swaps | Fair value hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	185,958	160,942
The Group | Hedging | Interest rate swaps | Cash flow hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	316,776	417,718
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Contract/ notional amount	2,194,203	2,805,976
The Bank | Interest rate risk | Fair value hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Hedging instrument, liabilities	4	60
(Losses) gains on hedging instrument, fair value hedges	(225)	120
Gains (losses) on hedged item attributable to hedged risk, fair value hedges	198	(163)
The Bank | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	16,430	18,977
The Bank | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments | Sterling LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	£ 12,535	£ 14,286
Nominal amount of hedging instrument	21,226	25,070
The Bank | Interest rate risk | Cash flow hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Hedging instrument, liabilities	£ (31)	£ (26)
Hedge ineffectiveness recognised in the income statement	(27)	62
The Bank | Interest rate risk | Cash flow hedges | Interest rate benchmark reform amendments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	£ 11,221	£ 12,421
Nominal amount of hedging instrument	134,100	194,827
The Bank | Interest rate risk | Cash flow hedges | Interest rate benchmark reform amendments | Sterling LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	£ 11,221	£ 12,421
Nominal amount of hedging instrument	93,353	130,477
The Bank | Currency risk
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Structural foreign currency exposures	£ 2	£ 2
The Bank | Financial assets at fair value through profit or loss
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Collateral held permitted to be sold or repledged, at fair value	0	0
The Bank | Hedging
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	152,035	198,445
The Bank | Hedging | Fair value hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	58,066	66,867
The Bank | Hedging | Cash flow hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	93,969	131,578
The Bank | Hedging | Interest rate swaps | Fair value hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	58,030	66,833
The Bank | Hedging | Interest rate swaps | Cash flow hedges
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	93,353	130,477
Deposits from banks: | The Group | Collateral pledged
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Liabilities in respect of securities sold under repurchase agreements	18,874	17,545
Deposits from banks: | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Liabilities in respect of securities sold under repurchase agreements	5,087	2,645
Deposits from banks: | The Bank | Collateral pledged
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Liabilities in respect of securities sold under repurchase agreements	5,197	2,118
Customer deposits | The Group | Collateral pledged
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Reverse repurchase agreements and cash collateral on securities borrowed	8,087	9,221
Assets held to hedge liabilities arising from financing activities | The Group | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	19,567	45,183
Assets held to hedge liabilities arising from financing activities | The Group | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments | Sterling LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	6,172	5,890
Assets held to hedge liabilities arising from financing activities | The Group | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments | US Dollar LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	13,395	15,729
Assets held to hedge liabilities arising from financing activities | The Bank | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	17,775	38,328
Assets held to hedge liabilities arising from financing activities | The Bank | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments | Sterling LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	5,455	4,824
Assets held to hedge liabilities arising from financing activities | The Bank | Interest rate risk | Fair value hedges | Interest rate benchmark reform amendments | US Dollar LIBOR
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Contract/ notional amount	12,320	14,517
Net amount recognised in the balance sheet | Deposits from banks:
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Deposits from banks	24,997	23,593
Net amount recognised in the balance sheet | Customer deposits
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Customer deposits	434,569	396,839
Repos | Net amount recognised in the balance sheet | Deposits from banks:
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Deposits from banks	18,767	18,105
Repos | Net amount recognised in the balance sheet | Customer deposits
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Derivative Assets [Line Items]
Customer deposits	£ 9,417	£ 9,530

FINANCIAL RISK MANAGEMENT (D_12

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Securities Lending Transactions - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Securities Lending Transactions [Line Items]
Financial assets at fair value through profit or loss	£ 1,674	£ 2,284
Financial assets at fair value through other comprehensive income	27,260	24,617
Total financial assets	579,429	561,068
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Securities Lending Transactions [Line Items]
Financial assets at fair value through profit or loss	1,724	703
Financial assets at fair value through other comprehensive income	24,647	22,160
Total financial assets	401,987	462,034
Loans and advances securitised | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Securities Lending Transactions [Line Items]
Financial assets at fair value through profit or loss	0	470
Financial assets at fair value through other comprehensive income	2,344	854
Total financial assets	2,344	1,324
Loans and advances securitised | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Securities Lending Transactions [Line Items]
Financial assets at fair value through profit or loss	1,365	634
Financial assets at fair value through other comprehensive income	969	1,467
Total financial assets	£ 2,334	£ 2,101

FINANCIAL RISK MANAGEMENT (D_13

FINANCIAL RISK MANAGEMENT (Details) - Disclosure of Maturities of Liabilities - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Subordinated liabilities		£ 12,586
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	£ 24,997	23,593
Customer deposits	434,569	396,839
Financial liabilities at fair value through profit or loss	6,831	7,702
Debt securities in issue	59,293	76,431
Subordinated liabilities	9,242	12,586	£ 12,745
Derivative financial instruments	8,228	9,831
Interest expense	3,096	3,878	3,462
The Group | Undated subordinated liabilities
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Interest expense	23	28
The Group | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	28,941	24,108
Customer deposits	434,748	402,179
Financial liabilities at fair value through profit or loss	12,038	14,942
Debt securities in issue	64,852	97,989
Other liabilities (lease liabilities)	1,612	1,977
Subordinated liabilities	11,621	17,534
Total non-derivative financial liabilities	553,812	558,729
Derivative financial instruments	6,079	17,315
The Group | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	37,750	56,179
The Group | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	36,960	54,015
The Group | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	790	2,164
The Group | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	5,289	15,151
The Group | Up to 1 month | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	7,369	4,099
Customer deposits	413,374	368,331
Financial liabilities at fair value through profit or loss	40	30
Debt securities in issue	5,019	4,174
Other liabilities (lease liabilities)	10	2
Subordinated liabilities	81	245
Total non-derivative financial liabilities	425,893	376,881
Derivative financial instruments	5,211	16,178
The Group | Up to 1 month | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,358	2,492
The Group | Up to 1 month | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3,795	968
The Group | Up to 1 month | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	563	1,524
The Group | Up to 1 month | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,648	14,654
The Group | 1-3 months | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	1,564	2,302
Customer deposits	9,871	11,440
Financial liabilities at fair value through profit or loss	45	71
Debt securities in issue	5,195	8,186
Other liabilities (lease liabilities)	51	60
Subordinated liabilities	69	1,472
Total non-derivative financial liabilities	16,795	23,531
Derivative financial instruments	513	401
The Group | 1-3 months | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,818	3,053
The Group | 1-3 months | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,312	2,636
The Group | 1-3 months | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	506	417
The Group | 1-3 months | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	7	(16)
The Group | 3-12 months | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	72	248
Customer deposits	5,366	11,861
Financial liabilities at fair value through profit or loss	141	298
Debt securities in issue	9,706	15,117
Other liabilities (lease liabilities)	174	187
Subordinated liabilities	3,609	1,711
Total non-derivative financial liabilities	19,068	29,422
Derivative financial instruments	207	72
The Group | 3-12 months | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,390	10,815
The Group | 3-12 months | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,272	10,744
The Group | 3-12 months | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	118	71
The Group | 3-12 months | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	89	1
The Group | 1-5 years | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	19,438	17,142
Customer deposits	5,542	9,271
Financial liabilities at fair value through profit or loss	1,702	1,330
Debt securities in issue	33,338	41,816
Other liabilities (lease liabilities)	626	793
Subordinated liabilities	4,261	7,593
Total non-derivative financial liabilities	64,907	77,945
Derivative financial instruments	307	226
The Group | 1-5 years | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	15,787	25,935
The Group | 1-5 years | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	15,696	25,838
The Group | 1-5 years | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	91	97
The Group | 1-5 years | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	216	129
The Group | Over 5 years | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	498	317
Customer deposits	595	1,276
Financial liabilities at fair value through profit or loss	10,110	13,213
Debt securities in issue	11,594	28,696
Other liabilities (lease liabilities)	751	935
Subordinated liabilities	3,601	6,513
Total non-derivative financial liabilities	27,149	50,950
Derivative financial instruments	(159)	438
The Group | Over 5 years | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	8,397	13,884
The Group | Over 5 years | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	8,885	13,829
The Group | Over 5 years | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	(488)	55
The Group | Over 5 years | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	329	383
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	10,304	7,122
Customer deposits	264,473	239,762
Financial liabilities at fair value through profit or loss	7,907	7,697
Debt securities in issue	48,109	61,509
Subordinated liabilities	7,751	9,909	£ 9,528
Derivative financial instruments	11,072	14,211
The Bank | Undated subordinated liabilities
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Interest expense	16	21
The Bank | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	10,399	7,520
Customer deposits	264,462	244,678
Financial liabilities at fair value through profit or loss	11,992	14,894
Debt securities in issue	52,422	81,640
Other liabilities (lease liabilities)	903	1,104
Subordinated liabilities	9,654	12,912
Total non-derivative financial liabilities	349,832	362,748
Derivative financial instruments	5,072	12,311
The Bank | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	33,562	51,059
The Bank | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	32,737	49,564
The Bank | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	825	1,495
The Bank | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,247	10,816
The Bank | Up to 1 month | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	7,353	3,933
Customer deposits	254,667	227,825
Financial liabilities at fair value through profit or loss	40	30
Debt securities in issue	4,502	3,323
Other liabilities (lease liabilities)	1	1
Subordinated liabilities	9	173
Total non-derivative financial liabilities	266,572	235,285
Derivative financial instruments	4,361	11,238
The Bank | Up to 1 month | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3,881	1,631
The Bank | Up to 1 month | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3,405	932
The Bank | Up to 1 month | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	476	699
The Bank | Up to 1 month | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3,885	10,539
The Bank | 1-3 months | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	1,562	2,302
Customer deposits	7,185	9,620
Financial liabilities at fair value through profit or loss	45	71
Debt securities in issue	4,200	4,341
Other liabilities (lease liabilities)	34	35
Subordinated liabilities	43	1,416
Total non-derivative financial liabilities	13,069	17,785
Derivative financial instruments	451	364
The Bank | 1-3 months | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,737	2,906
The Bank | 1-3 months | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	4,291	2,523
The Bank | 1-3 months | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	446	383
The Bank | 1-3 months | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	5	(19)
The Bank | 3-12 months | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	15	144
Customer deposits	1,334	4,727
Financial liabilities at fair value through profit or loss	141	298
Debt securities in issue	6,404	12,569
Other liabilities (lease liabilities)	97	109
Subordinated liabilities	3,069	1,572
Total non-derivative financial liabilities	11,060	19,419
Derivative financial instruments	100	62
The Bank | 3-12 months | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3,433	10,228
The Bank | 3-12 months | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3,336	10,160
The Bank | 3-12 months | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	97	68
The Bank | 3-12 months | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	3	(6)
The Bank | 1-5 years | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	1,108	824
Customer deposits	819	1,330
Financial liabilities at fair value through profit or loss	1,701	1,330
Debt securities in issue	27,908	34,779
Other liabilities (lease liabilities)	326	446
Subordinated liabilities	3,517	6,254
Total non-derivative financial liabilities	35,379	44,963
Derivative financial instruments	244	185
The Bank | 1-5 years | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	15,174	24,164
The Bank | 1-5 years | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	15,076	24,038
The Bank | 1-5 years | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	98	126
The Bank | 1-5 years | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	146	59
The Bank | Over 5 years | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Deposits from banks	361	317
Customer deposits	457	1,176
Financial liabilities at fair value through profit or loss	10,065	13,165
Debt securities in issue	9,408	26,628
Other liabilities (lease liabilities)	445	513
Subordinated liabilities	3,016	3,497
Total non-derivative financial liabilities	23,752	45,296
Derivative financial instruments	(84)	462
The Bank | Over 5 years | Outflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	6,337	12,130
The Bank | Over 5 years | Inflows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	6,629	11,911
The Bank | Over 5 years | Net flows | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	(292)	219
The Bank | Over 5 years | Net settled derivative liabilities | Undiscounted future cash flow basis
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items]
Derivative financial instruments	£ 208	£ 243

FINANCIAL RISK MANAGEMENT (D_14

FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	£ 2,364	£ 2,570
Commitments and guarantees	133,598	116,434
Total contingents and commitments	135,962	119,004
The Group | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	133,473	116,263
The Group | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	125	171
The Group | Not later than 1 year
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	1,375	1,439
Commitments and guarantees	102,280	90,958
Total contingents and commitments	103,655	92,397
The Group | Not later than 1 year | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	102,279	90,953
The Group | Not later than 1 year | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	1	5
The Group | 1-3 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	337	349
Commitments and guarantees	18,196	11,827
Total contingents and commitments	18,533	12,176
The Group | 1-3 years | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	18,152	11,756
The Group | 1-3 years | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	44	71
The Group | 3-5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	69	99
Commitments and guarantees	9,470	10,614
Total contingents and commitments	9,539	10,713
The Group | 3-5 years | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	9,454	10,571
The Group | 3-5 years | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	16	43
The Group | Over 5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	583	683
Commitments and guarantees	3,652	3,035
Total contingents and commitments	4,235	3,718
The Group | Over 5 years | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	3,588	2,983
The Group | Over 5 years | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	64	52
The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	2,093	2,289
Commitments and guarantees	62,766	52,549
Total contingents and commitments	64,859	54,838
The Bank | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	62,670	52,392
The Bank | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	96	157
The Bank | Not later than 1 year
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	1,217	1,339
Commitments and guarantees	34,552	30,732
Total contingents and commitments	35,769	32,071
The Bank | Not later than 1 year | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	34,552	30,727
The Bank | Not later than 1 year | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	0	5
The Bank | 1-3 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	328	271
Commitments and guarantees	16,346	9,877
Total contingents and commitments	16,674	10,148
The Bank | 1-3 years | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	16,319	9,806
The Bank | 1-3 years | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	27	71
The Bank | 3-5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	68	99
Commitments and guarantees	9,143	9,737
Total contingents and commitments	9,211	9,836
The Bank | 3-5 years | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	9,127	9,694
The Bank | 3-5 years | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	16	43
The Bank | Over 5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	480	580
Commitments and guarantees	2,725	2,203
Total contingents and commitments	3,205	2,783
The Bank | Over 5 years | Lending commitments and guarantees
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	2,672	2,165
The Bank | Over 5 years | Other commitments
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Commitments and guarantees	53	38
Acceptances and endorsements | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	73	17
Acceptances and endorsements | The Group | Not later than 1 year
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	73	17
Acceptances and endorsements | The Group | 1-3 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	0	0
Acceptances and endorsements | The Group | 3-5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	0	0
Acceptances and endorsements | The Group | Over 5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	0	0
Acceptances and endorsements | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	73	16
Acceptances and endorsements | The Bank | Not later than 1 year
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	73	16
Acceptances and endorsements | The Bank | 1-3 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	0	0
Acceptances and endorsements | The Bank | 3-5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	0	0
Acceptances and endorsements | The Bank | Over 5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	0	0
Other contingent liabilities | The Group
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	2,291	2,553
Other contingent liabilities | The Group | Not later than 1 year
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	1,302	1,422
Other contingent liabilities | The Group | 1-3 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	337	349
Other contingent liabilities | The Group | 3-5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	69	99
Other contingent liabilities | The Group | Over 5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	583	683
Other contingent liabilities | The Bank
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	2,020	2,273
Other contingent liabilities | The Bank | Not later than 1 year
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	1,144	1,323
Other contingent liabilities | The Bank | 1-3 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	328	271
Other contingent liabilities | The Bank | 3-5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	68	99
Other contingent liabilities | The Bank | Over 5 years
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Amounts and Residual Maturities of the Group's Off Balance Sheet Contingent Liabilities and Commitments [Line Items]
Contingent liabilities	£ 480	£ 580

CASH FLOW STATEMENTS (Details)

CASH FLOW STATEMENTS (Details) - Schedule of Change in Operating Assets - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
CASH FLOW STATEMENTS (Details) - Schedule of Change in Operating Assets [Line Items]
Change in financial assets held at amortised cost	£ (9,688)	£ (11,832)	£ (10,338)
Change in amounts due from fellow Lloyds Banking Group undertakings	1,116	24	4,827
Change in derivative financial instruments and financial assets at fair value through profit or loss	1,089	24,649	40,137
Change in other operating assets	627	63	(442)
Change in operating assets	(6,856)	12,904	34,184
The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Change in Operating Assets [Line Items]
Change in financial assets held at amortised cost	(1,815)	(5,482)	(992)
Change in amounts due from fellow Lloyds Banking Group undertakings	73,506	(48,692)	9,875
Change in derivative financial instruments and financial assets at fair value through profit or loss	(268)	22,568	37,356
Change in other operating assets	239	63	295
Change in operating assets	£ 71,662	£ (31,543)	£ 46,534

CASH FLOW STATEMENTS (Details_2

CASH FLOW STATEMENTS (Details) - Schedule of Change in Operating Liabilities - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
CASH FLOW STATEMENTS (Details) - Schedule of Change in Operating Liabilities [Line Items]
Change in deposits from banks	£ 1,404	£ (2,670)	£ (2,677)
Change in customer deposits	37,728	5,593	(11,901)
Change in amounts due to fellow Lloyds Banking Group undertakings	(1,316)	(8,142)	(5,466)
Change in debt securities in issue	(17,138)	11,898	4,730
Change in derivative financial instruments and financial liabilities at fair value through profit or loss	(2,549)	(11,527)	(45,383)
Change in investment contract liabilities	0	0	(353)
Change in other operating liabilities	(288)	(782)	(383)
Change in operating liabilities	17,841	(5,630)	(61,433)
Increase (decrease) in lease liabilities	163	43	27
The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Change in Operating Liabilities [Line Items]
Change in deposits from banks	3,182	1,802	(2,219)
Change in customer deposits	24,711	10,360	(5,258)
Change in amounts due to fellow Lloyds Banking Group undertakings	(73,233)	28,016	(23,522)
Change in debt securities in issue	(13,400)	11,722	1,442
Change in derivative financial instruments and financial liabilities at fair value through profit or loss	(3,004)	(10,776)	(46,514)
Change in investment contract liabilities	0	0	0
Change in other operating liabilities	(249)	(1,823)	(648)
Change in operating liabilities	(61,993)	39,301	(76,719)
Increase (decrease) in lease liabilities	£ 42	£ 20	£ 27

CASH FLOW STATEMENTS (Details_3

CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Contributions to defined benefit schemes	£ 1,100
The Group
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Depreciation and amortisation		£ 2,670	£ 2,602	£ 2,374
Permanent diminution in value of investment in subsidiaries		0	0	0
Dividends and distributions on other equity instruments received from subsidiary undertakings		0	0	0
Revaluation of investment properties		20	8	(46)
Allowance for loan losses		4,060	1,362	926
Write-off of allowance for loan losses, net of recoveries		(1,279)	(1,457)	(1,000)
Impairment charge relating to undrawn balances		253	(17)	(72)
Impairment of financial assets at fair value through other comprehensive income		3,802	1,380	1,012
Change in insurance contract liabilities		0	0	(1,520)
Other provision movements		80	(161)	(509)
Additional capital injections to subsidiaries		0	0	0
Net charge in respect of defined benefit schemes		247	245	404
Unwind of discount on impairment allowances		(47)	(52)	(39)
Foreign exchange element on balance sheet		823	420	(365)
Interest expense on subordinated liabilities		846	947	1,072
Loss (profit) on disposal of businesses		0	(107)	(1,010)
Other non-cash items		(1,169)	(295)	933
Total non-cash items		6,665	5,702	3,176
Contributions to defined benefit schemes		(1,153)	(1,069)	(868)
Payments in respect of payment protection insurance provision		(1,700)	(2,457)	(2,101)
Payments in respect of other regulatory provisions		(465)	(707)	(956)
Other		137	0	6
Total other items		(3,181)	(4,233)	(3,919)
Non-cash and other items		3,484	1,469	(743)
The Group | Loans and receivables
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Allowance for loan losses		3,802	1,380	1,012
The Group | Financial assets available-for-sale, category
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Impairment of financial assets at fair value through other comprehensive income		5	(1)	(14)
The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Depreciation and amortisation		1,325	1,245	1,031
Permanent diminution in value of investment in subsidiaries		0	159	92
Dividends and distributions on other equity instruments received from subsidiary undertakings		(211)	(1,434)	(4,968)
Revaluation of investment properties		0	0	0
Allowance for loan losses		1,898	503	504
Write-off of allowance for loan losses, net of recoveries		(622)	(759)	(608)
Impairment charge relating to undrawn balances		155	14	(46)
Change in insurance contract liabilities		0	0	0
Other provision movements		18	(43)	(413)
Additional capital injections to subsidiaries		(33)	(53)	(72)
Net charge in respect of defined benefit schemes		121	131	196
Unwind of discount on impairment allowances		(31)	(32)	(33)
Foreign exchange element on balance sheet		491	(230)	(130)
Interest expense on subordinated liabilities		534	657	654
Loss (profit) on disposal of businesses		0	0	21
Other non-cash items		(308)	(142)	990
Total non-cash items		3,494	998	(1,796)
Contributions to defined benefit schemes		(650)	(563)	(455)
Payments in respect of payment protection insurance provision		(726)	(1,156)	(1,057)
Payments in respect of other regulatory provisions		(233)	(229)	(302)
Other		(65)	0	0
Total other items		(1,674)	(1,948)	(1,814)
Non-cash and other items		1,820	(950)	(3,610)
The Bank | Loans and receivables
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Allowance for loan losses		1,742	490	553
The Bank | Financial assets available-for-sale, category
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Impairment of financial assets at fair value through other comprehensive income		1	(1)	(2)
Payment protection insurance | The Group
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Charge for the year		85	1,795	1,395
Payment protection insurance | The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Charge for the year		169	859	628
Other regulatory provisions | The Group
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Charge for the year		329	395	561
Other regulatory provisions | The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Non-Cash and Other Items [Line Items]
Charge for the year		£ 143	£ 137	£ 311

CASH FLOW STATEMENTS (Details_4

CASH FLOW STATEMENTS (Details) - Schedule of Analysis of Cash and Cash Equivalents as Shown in the Balance Sheet - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
The Group
CASH FLOW STATEMENTS (Details) - Schedule of Analysis of Cash and Cash Equivalents as Shown in the Balance Sheet [Line Items]
Cash and balances at central banks	£ 49,888	£ 38,880	£ 40,213
Less: mandatory reserve deposits	(4,392)	(3,177)	(2,541)
Bank balances at central banks other than mandatory reserve deposits	45,496	35,703	37,672
Loans and advances to banks	5,950	4,852	3,692
Less: amounts with a maturity of three months or more	(2,480)	(1,941)	(1,641)
Loans and advances to banks current	3,470	2,911	2,051
Total cash and cash equivalents	48,966	38,614	39,723	£ 60,982
The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Analysis of Cash and Cash Equivalents as Shown in the Balance Sheet [Line Items]
Cash and balances at central banks	45,753	35,741	37,632
Less: mandatory reserve deposits	(954)	(764)	(803)
Bank balances at central banks other than mandatory reserve deposits	44,799	34,977	36,829
Loans and advances to banks	5,656	4,453	3,153
Less: amounts with a maturity of three months or more	(2,387)	(1,648)	(1,328)
Loans and advances to banks current	3,269	2,805	1,825
Total cash and cash equivalents	£ 48,068	£ 37,782	£ 38,654	£ 56,120

CASH FLOW STATEMENTS (Details_5

CASH FLOW STATEMENTS (Details) - Schedule of Acquisition of Group Undertakings and Businesses - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
The Group
Net assets acquired:
Intangible assets	£ 4,112	£ 3,781
Other assets	1,892	2,527
Other liabilities	(5,181)	(5,600)
Less: cash and cash equivalents acquired	10,352	(1,109)	£ (21,259)
Investment in subsidiary acquired	0	0
Net cash outflow from acquisitions in the year	0	0	(26)
The Group | Business combinations
Net assets acquired:
Intangible assets	0	0	21
Other assets	0	0	6
Other liabilities	0	0	(1)
Cash consideration	0	0	26
Less: cash and cash equivalents acquired	0	0	0
Net cash outflow arising from acquisitions of subsidiaries and businesses	0	0	26
Investment in subsidiary acquired	0	0	0
Net cash outflow from acquisitions in the year	0	0	26
The Bank
Net assets acquired:
Other assets	754	998
Other liabilities	(2,573)	(2,792)
Less: cash and cash equivalents acquired	10,286	(872)	(17,466)
Investment in subsidiary acquired	33,353	34,084
Net cash outflow from acquisitions in the year	0	0	(98)
The Bank | Business combinations
Net assets acquired:
Intangible assets	0	0	0
Other assets	0	0	0
Other liabilities	0	0	0
Cash consideration	0	0	0
Less: cash and cash equivalents acquired	0	0	0
Net cash outflow arising from acquisitions of subsidiaries and businesses	0	0	0
Investment in subsidiary acquired	0	0	98
Net cash outflow from acquisitions in the year	£ 0	£ 0	£ 98

CASH FLOW STATEMENTS (Details_6

CASH FLOW STATEMENTS (Details) - Schedule of Disposal and Closure of Group Undertakings and Businesses - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOW STATEMENTS (Details) - Schedule of Disposal and Closure of Group Undertakings and Businesses [Line Items]
Subordinated liabilities		£ (12,586)
The Group
CASH FLOW STATEMENTS (Details) - Schedule of Disposal and Closure of Group Undertakings and Businesses [Line Items]
Financial assets at fair value through profit or loss	£ 1,674	2,284
Loans and advances to customers	480,141	474,470
Derivative financial instruments	8,341	8,494
Goodwill	470	474	£ 474
Property, plant and equipment	8,317	9,467
Total assets	599,939	581,368
Customer deposits	(434,569)	(396,839)
Due to fellow Lloyds Banking Group undertakings	(6,875)	(4,893)
Derivative financial instruments	(8,228)	(9,831)
Subordinated liabilities	(9,242)	(12,586)	(12,745)
Non-controlling interests	(78)	(61)
Other net liabilities	(5,181)	(5,600)
Liabilities	(558,821)	(542,469)
Net cash inflow	0	107	8,604
The Group | Other disposals of assets
CASH FLOW STATEMENTS (Details) - Schedule of Disposal and Closure of Group Undertakings and Businesses [Line Items]
Financial assets at fair value through profit or loss	0	0	125,379
Loans and advances to customers	0	0	3,495
Due from fellow group undertakings	0	0	14,436
Derivative financial instruments	0	0	3,027
Investment property	0	0	3,639
Goodwill	0	0	1,836
Value of in-force business	0	0	4,902
Property, plant and equipment	0	0	48
Total assets	0	0	156,762
Customer deposits	0	0	(15,236)
Due to fellow Lloyds Banking Group undertakings	0	0	(2,584)
Derivative financial instruments	0	0	(2,762)
Liabilities from insurance and investment contracts	0	0	(117,021)
Subordinated liabilities	0	0	(2,494)
Non-controlling interests	0	0	(305)
Other net liabilities	0	0	(8,759)
Liabilities	0	0	(149,161)
Net assets disposed of	0	0	7,601
Investment in subsidiary disposed of	0	0	0
Profit (loss) on sale of businesses	0	107	1,010
Cash consideration received on losing control of group undertakings and businesses	0	107	8,611
Cash and cash equivalents disposed	0	0	(7)
Net cash inflow	0	107	8,604
The Bank
CASH FLOW STATEMENTS (Details) - Schedule of Disposal and Closure of Group Undertakings and Businesses [Line Items]
Financial assets at fair value through profit or loss	1,724	703
Loans and advances to customers	178,269	177,569
Derivative financial instruments	12,595	13,638
Goodwill	0	0
Property, plant and equipment	3,098	3,594
Total assets	445,466	505,750
Customer deposits	(264,473)	(239,762)
Due to fellow Lloyds Banking Group undertakings	(39,836)	(109,771)
Derivative financial instruments	(11,072)	(14,211)
Subordinated liabilities	(7,751)	(9,909)	(9,528)
Non-controlling interests	0	0
Other net liabilities	(2,573)	(2,792)
Liabilities	(393,298)	(454,531)
Net cash inflow	0	20	7,704
The Bank | Other disposals of assets
CASH FLOW STATEMENTS (Details) - Schedule of Disposal and Closure of Group Undertakings and Businesses [Line Items]
Financial assets at fair value through profit or loss	0	0	0
Loans and advances to customers	0	0	0
Due from fellow group undertakings	0	0	0
Derivative financial instruments	0	0	0
Investment property	0	0	0
Goodwill	0	0	0
Value of in-force business	0	0	0
Property, plant and equipment	0	0	0
Total assets	0	0	0
Customer deposits	0	0	0
Due to fellow Lloyds Banking Group undertakings	0	0	0
Derivative financial instruments	0	0	0
Liabilities from insurance and investment contracts	0	0	0
Subordinated liabilities	0	0	0
Non-controlling interests	0	0	0
Other net liabilities	0	0	0
Liabilities	0	0	0
Net assets disposed of	0	0	0
Investment in subsidiary disposed of	0	20	7,725
Profit (loss) on sale of businesses	0	0	(21)
Cash consideration received on losing control of group undertakings and businesses	0	20	7,704
Cash and cash equivalents disposed	0	0	0
Net cash inflow	£ 0	£ 20	£ 7,704

Uncategorized Items - lbk-20201

Label	Element	Value
Foreign Currency Translation Reserve [Member]
DisclosureOfMovementInOtherReserves [Table Text Block]	lbk_DisclosureOfMovementInOtherReservesTableTextBlock	The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Foreign currency translation reserve At 1 January (116) (114) (207) — (6) 76 Currency translation differences arising in the year — (2) (15) 1 6 2 Income statement transfers — — 108 — — (84) At 31 December (116) (116) (114) 1 — (6)
Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member]
RevaluationReserveInRespectOfDebtSecurities [Table Text Block]	lbk_RevaluationReserveInRespectOfDebtSecuritiesTableTextBlock	The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Revaluation reserve in respect of debt securities held at fair value through other comprehensive income At 1 January (538) (379) (195) 103 281 483 Change in fair value 46 (34) (31) 12 (50) (58) Deferred tax 29 11 31 (8) 13 34 Current tax (2) — — — — — 73 (23) — 4 (37) (24) Income statement transfers in respect of disposals (note 8) (145) (196) (268) (138) (201) (258) Deferred tax 47 61 84 44 61 80 (98) (135) (184) (94) (140) (178) Impairment recognised in the income statement 5 (1) — 1 (1) — At 31 December (558) (538) (379) 14 103 281
RevaluationReserveInRespectOfEquityShares [Table Text Block]	lbk_RevaluationReserveInRespectOfEquitySharesTableTextBlock	The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Revaluation reserve in respect of equity shares held at fair value through other comprehensive income At 1 January — — (35) — — (42) Change in fair value — — (98) — — (102) Deferred tax (16) 12 22 4 12 — Current tax — — — — — — (16) 12 (76) 4 12 (102) Realised gains and losses transferred to retained profits — — 132 — — 144 Deferred tax 16 (12) (21) (4) (12) — Current tax — — — — — — 16 (12) 111 (4) (12) 144 At 31 December — — — — — —
Merger reserve [member]
DisclosureOfMovementInOtherReserves [Table Text Block]	lbk_DisclosureOfMovementInOtherReservesTableTextBlock	Movements in other reserves were as follows: The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Merger reserve At 1 January and 31 December 6,348 6,348 6,348 — — —
Reserve of cash flow hedges [member]
DisclosureOfMovementInOtherReserves [Table Text Block]	lbk_DisclosureOfMovementInOtherReservesTableTextBlock	The Group The Bank 2020 2019 2018 2020 2019 2018 £m £m £m £m £m £m Cash flow hedging reserve At 1 January 1,556 1,110 1,573 1,607 1,268 1,554 Change in fair value of hedging derivatives 709 1,166 91 85 892 255 Deferred tax (229) (290) (43) (66) (217) (72) 480 876 48 19 675 183 Income statement transfers (727) (580) (691) (355) (448) (628) Deferred tax 198 150 180 96 112 159 (529) (430) (511) (259) (336) (469) At 31 December 1,507 1,556 1,110 1,367 1,607 1,268