v3.26.1
Report of the 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, 2026
Dec. 31, 2025
Loans and advances to customers at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 1,022,105 $ 988,399
Loans and advances to banks at amortised cost    
Disclosure of financial assets [line items]    
Financial assets 110,529 108,462
Debt instruments measured at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 218,320 $ 182,089
ECL coverage % 0.40% 0.40%
Debt instruments measured at amortised cost | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,907,516 $ 2,706,154
Debt instruments measured at amortised cost | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (12,363) (11,194)
Debt instruments measured at amortised cost | Loans and advances to customers at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 1,022,105 $ 988,399
ECL coverage % 1.10% 1.10%
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 $ 1,033,846 $ 999,091
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 $ (11,741) $ (10,692)
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 $ 482,012 $ 474,528
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 $ (2,806) $ (2,797)
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 % 1.80% 1.80%
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 $ 446,853 $ 424,505
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 $ (8,049) $ (7,526)
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 % 0.80% 0.40%
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 $ 104,981 $ 100,058
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 (886) (369)
Debt instruments measured at amortised cost | Loans and advances to banks at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 110,529 $ 108,462
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 $ 110,539 $ 108,469
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 (10) (7)
Debt instruments measured at amortised cost | Other financial assets measured at amortised cost    
Disclosure of financial assets [line items]    
Financial assets $ 965,673 $ 890,197
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 $ 965,830 $ 890,326
Debt instruments measured at amortised cost | Other financial assets measured at amortised cost | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (157) $ (129)
Debt instruments measured at amortised cost | Loan and other credit-related commitments    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 778,417 $ 690,792
Debt instruments measured at amortised cost | Loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (367) $ (315)
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 280,620 $ 272,531
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (25) $ (27)
Debt instruments measured at amortised cost | Loan 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 | Loan and other credit-related commitments | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 265,478 $ 270,953
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (326) $ (272)
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 232,319 $ 147,308
Debt instruments measured at amortised cost | Loan and other credit-related commitments | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (16) $ (16)
Debt instruments measured at amortised cost | Financial guarantees    
Disclosure of financial assets [line items]    
ECL coverage % 0.50% 0.30%
Debt instruments measured at amortised cost | Financial guarantees | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 18,884 $ 17,476
Debt instruments measured at amortised cost | Financial guarantees | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (88) $ (51)
Debt instruments measured at amortised cost | Financial guarantees | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.10%
Debt instruments measured at amortised cost | Financial guarantees | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,432 $ 1,446
Debt instruments measured at amortised cost | Financial guarantees | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ (1)
Debt instruments measured at amortised cost | Financial guarantees | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.70% 0.40%
Debt instruments measured at amortised cost | Financial guarantees | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 12,313 $ 11,548
Debt instruments measured at amortised cost | Financial guarantees | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (86) $ (49)
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 $ 5,139 $ 4,482
Debt instruments measured at amortised cost | Financial guarantees | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1) $ (1)
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 $ 2,771,827 $ 2,575,821
Debt instruments measured at amortised cost | Stage 1 | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (1,549) (1,438)
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 $ 922,567 $ 892,232
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 $ 923,849 $ 893,433
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 $ (1,282) $ (1,201)
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 % 0.20% 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 $ 455,230 $ 446,696
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 $ (690) $ (667)
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 $ 369,336 $ 349,763
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 $ (529) $ (478)
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 $ 99,283 $ 96,974
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 (63) (56)
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 $ 110,251 $ 108,332
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 $ 110,258 $ 108,336
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 (7) (4)
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 $ 963,615 $ 888,415
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 $ 963,708 $ 888,491
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 $ (93) $ (76)
Debt instruments measured at amortised cost | Stage 1 | Loan 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 | Loan and other credit-related commitments | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 757,187 $ 669,648
Debt instruments measured at amortised cost | Stage 1 | Loan and other credit-related commitments | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (157) $ (149)
Debt instruments measured at amortised cost | Stage 1 | Loan 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 | Loan and other credit-related commitments | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 278,508 $ 270,494
Debt instruments measured at amortised cost | Stage 1 | Loan and other credit-related commitments | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (20) $ (22)
Debt instruments measured at amortised cost | Stage 1 | Loan and other credit-related commitments | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.10% 0.00%
Debt instruments measured at amortised cost | Stage 1 | Loan and other credit-related commitments | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 248,768 $ 255,740
Debt instruments measured at amortised cost | Stage 1 | Loan and other credit-related commitments | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (125) $ (115)
Debt instruments measured at amortised cost | Stage 1 | Loan 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 | Loan and other credit-related commitments | Non-credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 229,911 $ 143,414
Debt instruments measured at amortised cost | Stage 1 | Loan and other credit-related commitments | Non-credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (12) $ (12)
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 $ 16,825 $ 15,913
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% 0.10%
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 $ 1,432 $ 1,446
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) $ (1)
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 $ 10,536 $ 10,071
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) $ (6)
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 $ 4,857 $ 4,396
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 % 2.30% 2.30%
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 109,875 $ 104,578
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (2,533) $ (2,445)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 5.40% 5.20%
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 22,871 $ 23,887
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (1,233) $ (1,235)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 1.90% 1.90%
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 $ 58,416 $ 54,636
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 $ (1,127) $ (1,064)
Debt instruments measured at amortised cost | Stage 2 | Non-credit impaired | – non-bank financial institutions    
Disclosure of financial assets [line items]    
ECL coverage % 0.80% 0.80%
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 $ 4,370 $ 2,413
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) $ (19)
Debt instruments measured at amortised cost | Stage 2 | Credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 32.20% 28.50%
Debt instruments measured at amortised cost | Stage 2 | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 25,468 $ 25,418
Debt instruments measured at amortised cost | Stage 2 | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (8,205) $ (7,235)
Debt instruments measured at amortised cost | Stage 2 | – POCI    
Disclosure of financial assets [line items]    
ECL coverage % 22.00% 22.60%
Debt instruments measured at amortised cost | Stage 2 | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 346 $ 337
Debt instruments measured at amortised cost | Stage 2 | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets (76) (76)
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 $ 83,260 $ 78,618
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 | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 85,657 $ 80,936
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 $ (2,397) $ (2,318)
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 % 5.40% 5.20%
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 $ 22,871 $ 23,887
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 $ (1,233) $ (1,235)
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 % 1.90% 1.90%
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 $ 58,416 $ 54,636
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 $ (1,127) $ (1,064)
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 % 0.80% 0.80%
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 $ 4,370 $ 2,413
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) (19)
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 $ 16,018 $ 17,292
ECL coverage % 33.30% 29.10%
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 $ 24,004 $ 24,389
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 $ (7,986) $ (7,097)
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 % 22.60% 22.70%
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 $ 3,911 $ 3,945
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 $ (883) $ (895)
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 % 33.30% 29.60%
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 $ 18,958 $ 19,966
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 $ (6,317) $ (5,909)
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 % 69.30% 61.30%
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 $ 1,135 $ 478
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 (786) (293)
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 $ 260 $ 257
ECL coverage % 22.60% 22.80%
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 $ 336 $ 333
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 $ (76) $ (76)
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 % 53.10% 53.60%
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 $ 143 $ 140
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 $ (76) $ (75)
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% 0.50%
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 $ 193
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 (1)
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 $ 278 $ 130
ECL coverage % 0.70% 1.50%
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 $ 280 $ 132
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 $ 1 $ 1
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 (1) (1)
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 $ 1,835 $ 1,640
ECL coverage % 1.00% 0.70%
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 $ 1,854 $ 1,651
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 (19) (11)
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 $ 217 $ 142
ECL coverage % 17.20% 22.80%
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 $ 262 $ 184
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 (45) (42)
Debt instruments measured at amortised cost | Stage 2 | Other financial assets measured at amortised cost | – POCI    
Disclosure of financial assets [line items]    
Financial assets $ 6 $ 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 $ 6 $ 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 | Loan and other credit-related commitments | Non-credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 0.50% 0.50%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 20,282 $ 20,488
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (103) $ (97)
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.20% 0.30%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,023 $ 1,945
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (5) $ (5)
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.60% 0.60%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 15,851 $ 14,649
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (94) $ (88)
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.20% 0.10%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2,408 $ 3,894
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Non-credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (4) $ (4)
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired    
Disclosure of financial assets [line items]    
ECL coverage % 11.30% 10.60%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 944 $ 652
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (107) $ (69)
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – personal    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – personal | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 89 $ 92
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – personal | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 12.50% 12.30%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 855 $ 560
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – corporate and commercial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (107) $ (69)
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – financial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | Credit impaired | – financial | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | – POCI    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | – POCI | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 4 $ 4
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | – POCI | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ 0 $ 0
Debt instruments measured at amortised cost | Stage 2 | Loan 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 | Loan 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 | Loan 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 | Loan and other credit-related commitments | – POCI | – corporate and commercial    
Disclosure of financial assets [line items]    
ECL coverage % 0.00% 0.00%
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | – POCI | – corporate and commercial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 4 $ 4
Debt instruments measured at amortised cost | Stage 2 | Loan and other credit-related commitments | – 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 | Loan 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 | Loan 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 | Loan 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 % 0.70% 1.20%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 1,802 $ 1,371
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Non-credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (12) $ (17)
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 $ 0 $ 0
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 % 0.80% 1.30%
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 $ 1,522 $ 1,287
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 $ (12) $ (17)
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 $ 280 $ 84
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 % 25.70% 13.50%
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 257 $ 192
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | Credit impaired | Allowance for ECL    
Disclosure of financial assets [line items]    
Financial assets $ (66) $ (26)
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 % 25.90% 13.70%
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 $ 255 $ 190
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 $ (66) $ (26)
Debt instruments measured at amortised cost | Stage 2 | Financial guarantees | 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 | Credit impaired | – financial | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets $ 2 $ 2
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 $ 0
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