v3.25.2
Report of Directors Financial Review Risk Report - Summary of credit risk (excluding debt instruments measured at FVOCI) by stage distribution and ECL coverage (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Loans and advances to customers at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 981,722 $ 930,658
Loans and advances to banks at amortised cost    
Disclosure of financial assets [line items]    
Financial assets 107,582 102,039
Debt instruments measured at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 166,209 $ 153,973
ECL coverage % 0.40% 0.40%
Debt instruments measured at amortised cost | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,698,402 $ 2,507,370
Debt instruments measured at amortised cost | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (10,676) (10,197)
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 981,722 $ 930,658
ECL coverage % 1.00% 1.00%
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 991,865 $ 940,373
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (10,143) $ (9,715)
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.60% 0.60%
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 468,955 $ 447,225
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (2,740) $ (2,524)
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 1.70% 1.60%
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 432,268 $ 410,684
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (7,139) $ (6,755)
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 0.30% 0.50%
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – non-bank financial institutions | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 90,642 $ 82,464
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost | – non-bank financial institutions | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (264) (436)
Debt instruments measured at amortised cost | Loans and advances to banks at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 107,582 $ 102,039
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Loans and advances to banks at amortised cost | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 107,597 $ 102,052
Debt instruments measured at amortised cost | Loans and advances to banks at amortised cost | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (15) (13)
Debt instruments measured at amortised cost | Other financial assets measured at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 890,508 $ 828,488
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Other financial assets measured at amortised cost | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 890,630 $ 828,580
Debt instruments measured at amortised cost | Other financial assets measured at amortised cost | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (122) $ (92)
Debt instruments measured at amortised cost | Loans and other credit-related commitments    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Loans and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 691,705 $ 619,367
Debt instruments measured at amortised cost | Loans and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (352) $ (348)
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 266,098 $ 253,255
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (25) $ (22)
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 262,111 $ 249,495
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (312) $ (310)
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 163,496 $ 116,617
Debt instruments measured at amortised cost | Loans and other credit-related commitments | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (15) $ (16)
Debt instruments measured at amortised cost | Financial guarantees    
Disclosure of financial assets [line items]    
ECL coverage % 0.30% 0.20%
Debt instruments measured at amortised cost | Financial guarantees | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 16,605 $ 16,998
Debt instruments measured at amortised cost | Financial guarantees | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (44) $ (29)
Debt instruments measured at amortised cost | Financial guarantees | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.00%
Debt instruments measured at amortised cost | Financial guarantees | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,483 $ 1,427
Debt instruments measured at amortised cost | Financial guarantees | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ 0
Debt instruments measured at amortised cost | Financial guarantees | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.40% 0.20%
Debt instruments measured at amortised cost | Financial guarantees | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 11,038 $ 11,475
Debt instruments measured at amortised cost | Financial guarantees | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (42) $ (27)
Debt instruments measured at amortised cost | Financial guarantees | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Financial guarantees | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 4,084 $ 4,096
Debt instruments measured at amortised cost | Financial guarantees | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ (2)
Debt instruments measured at amortised cost | Stage 1 | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,531,205 $ 2,365,477
Debt instruments measured at amortised cost | Stage 1 | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (1,418) (1,296)
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 851,488 $ 823,342
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 852,669 $ 824,420
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1,181) $ (1,078)
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 421,134 $ 403,746
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (618) $ (570)
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 344,579 $ 340,987
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (502) $ (463)
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – non-bank financial institutions | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 86,956 $ 79,687
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to customers at amortised cost | Non-credit impaired | – non-bank financial institutions | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (61) (45)
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to banks at amortised cost | Non-credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 107,418 $ 101,843
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to banks at amortised cost | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 107,428 $ 101,852
Debt instruments measured at amortised cost | Stage 1 | Loans and advances to banks at amortised cost | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (10) (9)
Debt instruments measured at amortised cost | Stage 1 | Other financial assets measured at amortised cost | Non-credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 888,349 $ 826,557
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Other financial assets measured at amortised cost | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 888,423 $ 826,621
Debt instruments measured at amortised cost | Stage 1 | Other financial assets measured at amortised cost | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (74) $ (64)
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 668,179 $ 597,231
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (143) $ (137)
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 263,998 $ 251,489
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (21) $ (17)
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 242,163 $ 231,201
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (111) $ (111)
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 162,018 $ 114,541
Debt instruments measured at amortised cost | Stage 1 | Loans and other credit-related commitments | Non-credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (11) $ (9)
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 14,506 $ 15,353
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (10) $ (8)
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,463 $ 1,416
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ 0
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 9,128 $ 10,048
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (8) $ (7)
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 3,915 $ 3,889
Debt instruments measured at amortised cost | Stage 1 | Financial guarantees | Non-credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ (1)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 2.00% 2.30%
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 141,777 $ 117,824
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (2,898) $ (2,679)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 2.80% 2.90%
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 43,900 $ 39,919
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1,228) $ (1,158)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 2.20% 2.70%
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 68,592 $ 51,231
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1,487) $ (1,358)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 1.30% 1.40%
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – non-bank financial institutions | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,846 $ 2,098
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – non-bank financial institutions | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (37) $ (30)
Debt instruments measured at amortised cost | Stage 2 | Credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 25.10% 25.70%
Debt instruments measured at amortised cost | Stage 2 | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 25,108 $ 23,976
Debt instruments measured at amortised cost | Stage 2 | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (6,293) $ (6,171)
Debt instruments measured at amortised cost | Stage 2 | – POCI    
Disclosure of financial assets [line items]    
ECL coverage % 21.50% 54.80%
Debt instruments measured at amortised cost | Stage 2 | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 312 $ 93
Debt instruments measured at amortised cost | Stage 2 | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (67) (51)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 112,586 $ 90,702
ECL coverage % 2.40% 2.70%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 115,338 $ 93,248
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (2,752) $ (2,546)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 2.80% 2.90%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 43,900 $ 39,919
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1,228) $ (1,158)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 2.20% 2.70%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 68,592 $ 51,231
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1,487) $ (1,358)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 1.30% 1.40%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – non-bank financial institutions | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,846 $ 2,098
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Non-credit impaired | – non-bank financial institutions | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (37) (30)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 17,406 $ 16,575
ECL coverage % 26.10% 26.70%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 23,550 $ 22,615
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (6,144) $ (6,040)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 22.80% 22.40%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 3,921 $ 3,560
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (894) $ (796)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 26.80% 26.60%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 18,982 $ 18,376
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (5,084) $ (4,883)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 25.70% 53.20%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – non-bank financial institutions | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 647 $ 679
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | Credit impaired | – non-bank financial institutions | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (166) (361)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI    
Disclosure of financial assets [line items]    
Financial assets $ 242 $ 39
ECL coverage % 21.40% 56.70%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 308 $ 90
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (66) $ (51)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 57.40% 56.70%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 115 $ 90
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (66) $ (51)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – non-bank financial institutions | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 193 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to customers at amortised cost | – POCI | – non-bank financial institutions | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets 0 0
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | Non-credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 164 $ 196
ECL coverage % 1.20% 1.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 166 $ 198
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (2) (2)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | Credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
ECL coverage % 100.00% 100.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 3 $ 2
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (3) (2)
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | – POCI    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and advances to banks at amortised cost | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets 0 0
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | Non-credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 1,994 $ 1,801
ECL coverage % 0.80% 0.30%
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,011 $ 1,806
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (17) (5)
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | Credit impaired    
Disclosure of financial assets [line items]    
Financial assets $ 165 $ 130
ECL coverage % 15.80% 15.00%
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 196 $ 153
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (31) (23)
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | – POCI    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 0.50% 0.60%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 22,482 $ 21,175
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (119) $ (121)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.20% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,978 $ 1,680
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (3) $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.60% 0.70%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 19,116 $ 17,453
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (113) $ (116)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.20% 0.20%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,388 $ 2,042
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Non-credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (3) $ (5)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 8.60% 9.40%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,040 $ 958
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (89) $ (90)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.80% 5.80%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 122 $ 86
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ (5)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 10.50% 9.90%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 828 $ 838
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (87) $ (83)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 1.10% 5.90%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 90 $ 34
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | Credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ (2)
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI    
Disclosure of financial assets [line items]    
ECL coverage % 25.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 4 $ 3
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 25.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 4 $ 3
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loans and other credit-related commitments | – POCI | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 0.40% 0.40%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,780 $ 1,397
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (8) $ (5)
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 20 $ 11
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.50% 0.40%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,639 $ 1,232
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (8) $ (5)
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 121 $ 154
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 8.20% 6.50%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 319 $ 248
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (26) $ (16)
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 9.60% 7.70%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 271 $ 195
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (26) $ (15)
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 1.90%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 48 $ 53
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ (1)
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | – POCI | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0