v3.25.4
Report of Directors Financial Review Risk Report - Distribution of financial instruments to which the impairment requirements in IFRS 9 are applied, by credit quality and stage allocation (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets $ 3,117,161 $ 2,923,319
Off-balance sheet commitments 360,260 334,622
Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 2,486,661 2,350,371
Off-balance sheet commitments 360,529 334,934
Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (4,593) (4,618)
Off-balance sheet commitments (269) (312)
– loan and other credit-related commitments    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 257,845 242,211
– loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 257,845 242,211
– loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
Loans And Advances To Customers    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 988,399 930,658
Loans And Advances To Banks    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,462 102,039
Financial assets at amortised cost, category    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 182,089 153,973
Financial assets at amortised cost, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 2,706,154 2,507,370
Financial assets at amortised cost, category | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (11,194) (10,197)
Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 999,091 940,373
Financial assets at amortised cost, category | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (10,692) (9,715)
Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,469 102,052
Financial assets at amortised cost, category | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (7) (13)
Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 890,326 828,580
Financial assets at amortised cost, category | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (129) (92)
Financial assets at amortised cost, category | Debt securities    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 158,644 131,825
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 2,575,821 2,365,477
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (1,438) (1,296)
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 893,433 824,420
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (1,201) (1,078)
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,336 101,852
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (4) (9)
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 888,491 826,621
Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (76) (64)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 104,578 117,824
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (2,445) (2,679)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 80,936 93,248
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (2,318) (2,546)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 132 198
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (2) (2)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1,651 1,806
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (11) (5)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 25,418 23,976
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (7,235) (6,171)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 24,389 22,615
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (7,097) (6,040)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1 2
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (1) (2)
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 184 153
Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (42) (23)
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 337 93
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (76) (51)
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 333 90
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (76) (51)
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
Financial assets measured at fair value through other comprehensive income, category | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 383,568 346,124
Financial assets measured at fair value through other comprehensive income, category | Debt securities | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (30) (54)
Strong | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 153,426 136,892
Strong | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 105,985 96,952
Good | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 114,621 109,296
Good | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 81,431 76,340
Satisfactory | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 87,332 82,958
Satisfactory | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 67,475 65,619
Sub-standard | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4,053 4,518
Sub-standard | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 2,702 2,847
Credit impaired | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 1,097 1,270
IFRS 9    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 707,902 635,988
Financial assets and off-balance sheet loan commitments 2,694,960 2,497,173
IFRS 9 | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 708,268 636,365
Financial assets and off-balance sheet loan commitments 2,706,154 2,507,370
IFRS 9 | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (366) (377)
Financial assets and off-balance sheet loan commitments (11,194) (10,197)
IFRS 9 | – loan and other credit-related commitments    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 690,477 619,019
IFRS 9 | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 690,792 619,367
IFRS 9 | – loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (315) (348)
IFRS 9 | – financial guarantees    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 17,425 16,969
IFRS 9 | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 17,476 16,998
IFRS 9 | – financial guarantees | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (51) (29)
IFRS 9 | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 890,326  
IFRS 9 | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (129)  
IFRS 9 | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 669,499 597,094
IFRS 9 | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 669,648 597,231
IFRS 9 | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (149) (137)
IFRS 9 | – stage 1 | Financial instruments not credit-impaired | – financial guarantees    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 15,905 15,345
IFRS 9 | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 15,913 15,353
IFRS 9 | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (8) (8)
IFRS 9 | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 20,391 21,054
IFRS 9 | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 20,488 21,175
IFRS 9 | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (97) (121)
IFRS 9 | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 1,354 1,392
IFRS 9 | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 1,371 1,397
IFRS 9 | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (17) (5)
IFRS 9 | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 583 868
IFRS 9 | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 652 958
IFRS 9 | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (69) (90)
IFRS 9 | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 166 232
IFRS 9 | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 192 248
IFRS 9 | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments (26) (16)
IFRS 9 | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4 3
IFRS 9 | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4 3
IFRS 9 | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Lifetime expected credit losses | – POCI | – financial guarantees    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Lifetime expected credit losses | – POCI | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Lifetime expected credit losses | – POCI | – financial guarantees | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Financial assets at amortised cost, category | Loans And Advances To Customers    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 988,399 930,658
IFRS 9 | Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 999,091 940,373
IFRS 9 | Financial assets at amortised cost, category | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (10,692) (9,715)
IFRS 9 | Financial assets at amortised cost, category | Loans And Advances To Banks    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,462 102,039
IFRS 9 | Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,469 102,052
IFRS 9 | Financial assets at amortised cost, category | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (7) (13)
IFRS 9 | Financial assets at amortised cost, category | Other    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 890,197 828,488
IFRS 9 | Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 890,326 828,580
IFRS 9 | Financial assets at amortised cost, category | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (129) (92)
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 892,232 823,342
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 893,433 824,420
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (1,201) (1,078)
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,332 101,843
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 108,336 101,852
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (4) (9)
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 888,415 826,557
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 888,491 826,621
IFRS 9 | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (76) (64)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 78,618 90,702
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 80,936 93,248
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (2,318) (2,546)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 130 196
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 132 198
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (2) (2)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1,640 1,801
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1,651 1,806
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (11) (5)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 17,292 16,575
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 24,389 22,615
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (7,097) (6,040)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1 2
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (1) (2)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 142 130
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 184 153
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (42) (23)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 257 39
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 333 90
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (76) (51)
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 386,370 353,855
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 386,400 353,909
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (30) (54)
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Debt securities    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 386,370 353,855
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 386,400 353,909
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Debt securities | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (30) (54)
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 385,476 352,971
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 385,504 353,002
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (28) (31)
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 894 884
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 896 907
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets (2) (23)
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Allowance for ECL    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 449,176 407,485
Financial assets and off-balance sheet loan commitments 1,838,884 1,717,942
IFRS 9 | Strong | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 441,740 400,120
IFRS 9 | Strong | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 7,436 7,365
IFRS 9 | Strong | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 437,973 398,779
IFRS 9 | Strong | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 7,430 7,352
IFRS 9 | Strong | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 3,767 1,341
IFRS 9 | Strong | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 6 13
IFRS 9 | Strong | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Strong | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Strong | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Strong | Lifetime expected credit losses | – POCI | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Strong | Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 545,487 515,266
IFRS 9 | Strong | Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 97,524 92,621
IFRS 9 | Strong | Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 746,697 702,570
IFRS 9 | Strong | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 540,253 498,415
IFRS 9 | Strong | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 97,426 92,528
IFRS 9 | Strong | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 746,536 702,373
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 5,234 16,851
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 98 93
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 161 197
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets measured at fair value through other comprehensive income, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 375,950 336,313
IFRS 9 | Strong | Financial assets measured at fair value through other comprehensive income, category | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 375,950 336,313
IFRS 9 | Strong | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 375,894 336,264
IFRS 9 | Strong | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 56 49
IFRS 9 | Strong | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Strong | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 151,068 135,659
Financial assets and off-balance sheet loan commitments 467,312 418,694
IFRS 9 | Good | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 146,923 131,396
IFRS 9 | Good | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4,145 4,263
IFRS 9 | Good | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 143,849 125,956
IFRS 9 | Good | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4,040 4,192
IFRS 9 | Good | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 3,074 5,440
IFRS 9 | Good | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 105 71
IFRS 9 | Good | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Good | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Good | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Good | Lifetime expected credit losses | – POCI | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Good | Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 215,781 193,080
IFRS 9 | Good | Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 6,222 4,255
IFRS 9 | Good | Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 94,241 85,700
IFRS 9 | Good | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 194,680 170,420
IFRS 9 | Good | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 6,215 4,226
IFRS 9 | Good | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 93,759 85,032
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 21,101 22,660
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 7 29
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 482 668
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets measured at fair value through other comprehensive income, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 2,592 9,448
IFRS 9 | Good | Financial assets measured at fair value through other comprehensive income, category | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 2,592 9,448
IFRS 9 | Good | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 2,592 9,448
IFRS 9 | Good | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Good | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 96,544 81,619
Financial assets and off-balance sheet loan commitments 341,861 312,735
IFRS 9 | Satisfactory | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 91,400 77,220
IFRS 9 | Satisfactory | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 5,144 4,399
IFRS 9 | Satisfactory | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 82,145 67,949
IFRS 9 | Satisfactory | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4,351 3,625
IFRS 9 | Satisfactory | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 9,255 9,271
IFRS 9 | Satisfactory | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 793 774
IFRS 9 | Satisfactory | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Satisfactory | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Satisfactory | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Satisfactory | Lifetime expected credit losses | – POCI | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 191,839 186,416
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 4,613 5,040
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 48,865 39,660
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 152,578 150,818
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 4,608 4,981
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 48,121 38,977
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 39,068 35,598
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 5 59
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 744 683
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 193 0
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Financial assets measured at fair value through other comprehensive income, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 7,572 7,768
IFRS 9 | Satisfactory | Financial assets measured at fair value through other comprehensive income, category | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 7,572 7,768
IFRS 9 | Satisfactory | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 7,015 7,290
IFRS 9 | Satisfactory | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 557 478
IFRS 9 | Satisfactory | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Satisfactory | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 10,632 10,393
Financial assets and off-balance sheet loan commitments 32,535 33,930
IFRS 9 | Sub-standard | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 10,073 9,670
IFRS 9 | Sub-standard | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 559 723
IFRS 9 | Sub-standard | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 5,681 4,547
IFRS 9 | Sub-standard | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 92 184
IFRS 9 | Sub-standard | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4,392 5,123
IFRS 9 | Sub-standard | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 467 539
IFRS 9 | Sub-standard | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Sub-standard | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Sub-standard | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Sub-standard | Lifetime expected credit losses | – POCI | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 21,455 22,906
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 109 134
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 339 497
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 5,922 4,767
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 87 117
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 75 239
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 15,533 18,139
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 22 17
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 264 258
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets measured at fair value through other comprehensive income, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 286 380
IFRS 9 | Sub-standard | Financial assets measured at fair value through other comprehensive income, category | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 286 380
IFRS 9 | Sub-standard | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 3 0
IFRS 9 | Sub-standard | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 283 380
IFRS 9 | Sub-standard | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Sub-standard | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets and off-balance sheet loan commitments 25,562 24,069
IFRS 9 | Credit impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 656 961
IFRS 9 | Credit impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 192 248
IFRS 9 | Credit impaired | – stage 1 | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Credit impaired | – stage 1 | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Credit impaired | Lifetime expected credit losses | Financial instruments not credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Credit impaired | Lifetime expected credit losses | Financial instruments not credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Credit impaired | Lifetime expected credit losses | Financial instruments credit-impaired | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 652 958
IFRS 9 | Credit impaired | Lifetime expected credit losses | Financial instruments credit-impaired | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 192 248
IFRS 9 | Credit impaired | Lifetime expected credit losses | – POCI | – loan and other credit-related commitments | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 4 3
IFRS 9 | Credit impaired | Lifetime expected credit losses | – POCI | – financial guarantees | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Off-balance sheet commitments 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 24,529 22,705
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1 2
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 184 153
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | – stage 1 | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 24,389 22,615
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 1 2
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | Financial instruments credit-impaired | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 184 153
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Customers | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 140 90
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Loans And Advances To Banks | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets at amortised cost, category | Lifetime expected credit losses | – POCI | Other | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets measured at fair value through other comprehensive income, category | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets measured at fair value through other comprehensive income, category | – stage 1 | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments not credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | Financial instruments credit-impaired | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets 0 0
IFRS 9 | Credit impaired | Financial assets measured at fair value through other comprehensive income, category | Lifetime expected credit losses | – POCI | Debt securities | Gross carrying amount    
Disclosure of financial assets that are either past due or impaired [line items]    
Financial assets $ 0 $ 0