v3.25.2
Credit Risk - Disclosure of management adjustments to models for impairment and Economic uncertainty management adjustments to models for impairment presented by stage (Details) - GBP (£)
£ in Millions
Jun. 30, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 3.10% 4.10%
Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 5,395 £ 5,532
Impairment allowance | Co Branded Card Portfolio | Assets and liabilities classified as held for sale    
Disclosure of financial assets [line items]    
Financial assets 200 300
Impairment allowance, total | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 5,395 5,532
Impairment allowance pre management adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 5,227 5,304
Modelled ECL | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 4,499 4,737
Individually assessed impairments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 485 461
Management adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 168 228
Economic uncertainty adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 154 78
Other adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 14 £ 150
Post-model adjustment | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 87  
Loans and advances    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 3.10% 4.30%
Loans and advances | UK    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 6.70% 11.90%
Loans and advances | Rest of the world    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 0.60% (0.60%)
Loans and advances | Impairment allowance, total | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 5,371 £ 5,509
Loans and advances | Impairment allowance, total | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 2,198 2,151
Loans and advances | Impairment allowance, total | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 3,173 3,358
Loans and advances | Impairment allowance pre management adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 5,204 5,274
Loans and advances | Impairment allowance pre management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 2,050 1,895
Loans and advances | Impairment allowance pre management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 3,154 3,379
Loans and advances | Modelled ECL | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 4,500 4,700
Loans and advances | Individually assessed impairments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 500 500
Loans and advances | ECL from non-modelled exposures and debt securities | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 400 400
Loans and advances | Management adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 167 235
Loans and advances | Management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 148 256
Loans and advances | Management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 19 (21)
Loans and advances | Economic uncertainty adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 153 78
Loans and advances | Economic uncertainty adjustments | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 45 33
Loans and advances | Economic uncertainty adjustments | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 91 28
Loans and advances | Economic uncertainty adjustments | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 17 17
Loans and advances | Economic uncertainty adjustments | Impairment allowance | Cross default risk    
Disclosure of financial assets [line items]    
Financial assets 128 53
Loans and advances | Economic uncertainty adjustments | Impairment allowance | Model uncertainty risk    
Disclosure of financial assets [line items]    
Financial assets 25 25
Loans and advances | Economic uncertainty adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 79 78
Loans and advances | Economic uncertainty adjustments | UK | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 32 33
Loans and advances | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 30 28
Loans and advances | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 17 17
Loans and advances | Economic uncertainty adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 74 0
Loans and advances | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 13 0
Loans and advances | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 61 0
Loans and advances | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Loans and advances | Other adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 14 157
Loans and advances | Other adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 69 178
Loans and advances | Other adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets (55) (21)
Retail mortgages | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 180 187
Retail mortgages | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 37 38
Retail mortgages | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets £ 59 £ 62
Retail mortgages | UK    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 68.40% 67.70%
Retail mortgages | Rest of the world    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 0.00% 0.00%
Retail mortgages | Impairment allowance, total | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 158 £ 158
Retail mortgages | Impairment allowance, total | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 22 29
Retail mortgages | Impairment allowance pre management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 50 51
Retail mortgages | Impairment allowance pre management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 22 29
Retail mortgages | Management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 108 107
Retail mortgages | Management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail mortgages | Economic uncertainty adjustments | Impairment allowance | Model uncertainty risk    
Disclosure of financial assets [line items]    
Financial assets 25 25
Retail mortgages | Economic uncertainty adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 36 36
Retail mortgages | Economic uncertainty adjustments | UK | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 7 7
Retail mortgages | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 18 18
Retail mortgages | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 11 11
Retail mortgages | Economic uncertainty adjustments | UK | Impairment allowance | Cross default risk    
Disclosure of financial assets [line items]    
Financial assets 11 11
Retail mortgages | Economic uncertainty adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail mortgages | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail mortgages | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail mortgages | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail mortgages | Other adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 72 71
Retail mortgages | Other adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 3,108 3,307
Retail credit cards | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 457 553
Retail credit cards | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets £ 1,192 £ 1,247
Retail credit cards | UK    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance (16.80%) (2.90%)
Retail credit cards | Rest of the world    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 1.20% (0.90%)
Retail credit cards | Impairment allowance, total | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 756 £ 765
Retail credit cards | Impairment allowance, total | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 2,419 2,608
Retail credit cards | Impairment allowance pre management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 883 787
Retail credit cards | Impairment allowance pre management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 2,389 2,631
Retail credit cards | Management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets (127) (22)
Retail credit cards | Management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 30 (23)
Retail credit cards | Economic uncertainty adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Economic uncertainty adjustments | UK | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Economic uncertainty adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 30 0
Retail credit cards | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 30 0
Retail credit cards | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail credit cards | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Cross default risk    
Disclosure of financial assets [line items]    
Financial assets 30 0
Retail credit cards | Other adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets (127) (22)
Retail credit cards | Other adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 (23)
Retail other | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 455 410
Retail other | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 103 138
Retail other | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets £ 153 £ 111
Retail other | UK    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 19.40% 23.20%
Retail other | Rest of the world    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 0.00% 14.30%
Retail other | Impairment allowance, total | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 434 £ 388
Retail other | Impairment allowance, total | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 24 28
Retail other | Impairment allowance pre management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 350 298
Retail other | Impairment allowance pre management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 24 24
Retail other | Management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 84 90
Retail other | Management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 4
Retail other | Economic uncertainty adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | UK | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Retail other | Other adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 84 90
Retail other | Other adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 4
Corporate loans | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 1,203 1,166
Corporate loans | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 216 209
Corporate loans | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets £ 356 £ 331
Corporate loans | UK    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 9.80% 9.60%
Corporate loans | Rest of the world    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance (1.60%) (0.30%)
Corporate loans | Impairment allowance, total | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 850 £ 840
Corporate loans | Impairment allowance, total | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 708 693
Corporate loans | Impairment allowance pre management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 767 759
Corporate loans | Impairment allowance pre management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 719 695
Corporate loans | Management adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 83 81
Corporate loans | Management adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets (11) (2)
Corporate loans | Economic uncertainty adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 87  
Corporate loans | Economic uncertainty adjustments | Impairment allowance | Barclays Investment Bank    
Disclosure of financial assets [line items]    
Financial assets 51  
Corporate loans | Economic uncertainty adjustments | Impairment allowance | Barclays US Consumer Bank    
Disclosure of financial assets [line items]    
Financial assets 36  
Corporate loans | Economic uncertainty adjustments | Impairment allowance | Assets and liabilities classified as held for sale | Barclays US Consumer Bank    
Disclosure of financial assets [line items]    
Financial assets 6  
Corporate loans | Economic uncertainty adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 43 42
Corporate loans | Economic uncertainty adjustments | UK | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 25 26
Corporate loans | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 12 10
Corporate loans | Economic uncertainty adjustments | UK | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 6 6
Corporate loans | Economic uncertainty adjustments | UK | Impairment allowance | Cross default risk    
Disclosure of financial assets [line items]    
Financial assets 43 42
Corporate loans | Economic uncertainty adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 44 0
Corporate loans | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 13 0
Corporate loans | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 31 0
Corporate loans | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Corporate loans | Economic uncertainty adjustments | Rest of the world | Impairment allowance | Cross default risk    
Disclosure of financial assets [line items]    
Financial assets 44 0
Corporate loans | Other adjustments | UK | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 40 39
Corporate loans | Other adjustments | Rest of the world | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ (55) £ (2)
Debt securities at amortised cost    
Disclosure of financial assets [line items]    
Proportion of Management adjustments to Total impairment allowance 4.20% (30.40%)
Debt securities at amortised cost | Impairment allowance, total | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets £ 24 £ 23
Debt securities at amortised cost | Impairment allowance pre management adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 23 30
Debt securities at amortised cost | Management adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 1 (7)
Debt securities at amortised cost | Economic uncertainty adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 1 0
Debt securities at amortised cost | Economic uncertainty adjustments | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 1 0
Debt securities at amortised cost | Economic uncertainty adjustments | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 0 0
Debt securities at amortised cost | Economic uncertainty adjustments | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 0 0
Debt securities at amortised cost | Other adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 0 (7)
Loans and advances at amortised cost including debt securities    
Disclosure of financial assets [line items]    
Financial assets (417,764) (414,483)
Loans and advances at amortised cost including debt securities | Stage 1    
Disclosure of financial assets [line items]    
Financial assets (379,200) (370,812)
Loans and advances at amortised cost including debt securities | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets (33,776) (38,636)
Loans and advances at amortised cost including debt securities | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 4,970 5,093
Loans and advances at amortised cost including debt securities | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 825 950
Loans and advances at amortised cost including debt securities | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 1,772 1,762
Loans and advances at amortised cost including debt securities | Economic uncertainty adjustments | Impairment allowance    
Disclosure of financial assets [line items]    
Financial assets 154 78
Loans and advances at amortised cost including debt securities | Economic uncertainty adjustments | Impairment allowance | Stage 1    
Disclosure of financial assets [line items]    
Financial assets 46 33
Loans and advances at amortised cost including debt securities | Economic uncertainty adjustments | Impairment allowance | Lifetime expected credit losses | Stage 2    
Disclosure of financial assets [line items]    
Financial assets 91 28
Loans and advances at amortised cost including debt securities | Economic uncertainty adjustments | Impairment allowance | Lifetime expected credit losses | Financial instruments credit-impaired    
Disclosure of financial assets [line items]    
Financial assets 17 17
Cash collateral and settlements | Management adjustments | Impairment allowance | Other financial assets subject to impairment | Barclays Investment Bank    
Disclosure of financial assets [line items]    
Financial assets 0 (1)
Reverse repurchase agreements | Management adjustments | Impairment allowance | Other financial assets subject to impairment | Barclays Investment Bank    
Disclosure of financial assets [line items]    
Financial assets 1 (2)
Financial assets at fair value through other comprehensive income | Management adjustments | Impairment allowance | Other financial assets subject to impairment | Barclays Investment Bank    
Disclosure of financial assets [line items]    
Financial assets £ 0 £ (2)