v3.25.4
Fair values of financial instruments not carried at fair value - Fair value of financial instruments not carried at fair value and bases of valuation (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets $ 3,117,161 $ 2,923,319  
Financial liabilities 2,882,187 2,682,252  
Loss on disposal of operations [1] 47 1,752 $ 61
Deposits by banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 97,952 73,997  
Deposits by banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 131 0  
Customer accounts      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 1,786,828 1,654,955  
Customer accounts | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 16,173 5,399  
Repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 204,974 180,880  
Repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Debt securities in issue      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 216,217 205,564  
Subordinated liabilities      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 37,581 35,275  
Loans and advances to banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 108,462 102,039  
Loans and advances to banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 45 144  
Loans and advances to customers      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 988,399 930,658  
Loans and advances to customers | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 3,493 977  
Reverse repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 298,392 252,549  
Reverse repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Financial investments – at amortised cost      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 182,089 153,973  
Financial investments – at amortised cost | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 93 0  
Fair value | Deposits by banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 97,981 74,025  
Fair value | Deposits by banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 131 0  
Fair value | Customer accounts      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 1,787,070 1,655,151  
Fair value | Customer accounts | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 16,173 5,399  
Fair value | Repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 204,966 180,873  
Fair value | Repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Loans and advances to banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 108,452 102,055  
Fair value | Loans and advances to banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 45 144  
Fair value | Loans and advances to customers      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 980,792 917,643  
Fair value | Loans and advances to customers | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 3,493 977  
Fair value | Reverse repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 298,545 252,598  
Fair value | Reverse repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Financial investments – at amortised cost      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 181,683 151,060  
Fair value | Financial investments – at amortised cost | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 93 0  
Fair value | Level 1 | Deposits by banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 1 | Deposits by banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 1 | Customer accounts      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 1 | Customer accounts | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 1 | Repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 1 | Repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 1 | Loans and advances to banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 1 | Loans and advances to banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 1 | Loans and advances to customers      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 1 | Loans and advances to customers | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 1 | Reverse repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 1 | Reverse repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 1 | Financial investments – at amortised cost      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 148,925 120,843  
Fair value | Level 1 | Financial investments – at amortised cost | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 84 0  
Fair value | Level 2 | Deposits by banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 97,981 74,025  
Fair value | Level 2 | Deposits by banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 131 0  
Fair value | Level 2 | Customer accounts      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 1,787,070 1,655,151  
Fair value | Level 2 | Customer accounts | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 16,173 5,399  
Fair value | Level 2 | Repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 204,966 180,873  
Fair value | Level 2 | Repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 2 | Loans and advances to banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 107,906 101,007  
Fair value | Level 2 | Loans and advances to banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 45 144  
Fair value | Level 2 | Loans and advances to customers      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 14,363 11,435  
Fair value | Level 2 | Loans and advances to customers | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 1,303 11  
Fair value | Level 2 | Reverse repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 298,545 252,598  
Fair value | Level 2 | Reverse repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 2 | Financial investments – at amortised cost      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 31,475 29,493  
Fair value | Level 2 | Financial investments – at amortised cost | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 9 0  
Fair value | Level 3 | Deposits by banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 3 | Deposits by banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 3 | Customer accounts      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 3 | Customer accounts | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 3 | Repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 3 | Repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
Fair value | Level 3 | Loans and advances to banks      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 546 1,048  
Fair value | Level 3 | Loans and advances to banks | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 3 | Loans and advances to customers      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 966,429 906,208  
Fair value | Level 3 | Loans and advances to customers | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 2,190 966  
Fair value | Level 3 | Reverse repurchase agreements – non-trading      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 3 | Reverse repurchase agreements – non-trading | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
Fair value | Level 3 | Financial investments – at amortised cost      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 1,283 724  
Fair value | Level 3 | Financial investments – at amortised cost | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial assets 0 0  
At cost | Debt securities in issue      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 99,675 105,785  
At cost | Debt securities in issue | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 495 0  
At cost | Subordinated liabilities      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 28,406 25,958  
At cost | Subordinated liabilities | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Debt securities in issue      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 101,020 106,643  
At cost | Fair value | Debt securities in issue | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 495 0  
At cost | Fair value | Subordinated liabilities      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 31,617 28,262  
At cost | Fair value | Subordinated liabilities | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 1 | Debt securities in issue      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 1 | Debt securities in issue | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 1 | Subordinated liabilities      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 1 | Subordinated liabilities | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 2 | Debt securities in issue      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 99,530 105,689  
At cost | Fair value | Level 2 | Debt securities in issue | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 495 0  
At cost | Fair value | Level 2 | Subordinated liabilities      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 31,617 28,262  
At cost | Fair value | Level 2 | Subordinated liabilities | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 3 | Debt securities in issue      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 1,490 954  
At cost | Fair value | Level 3 | Debt securities in issue | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 3 | Subordinated liabilities      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities 0 0  
At cost | Fair value | Level 3 | Subordinated liabilities | - assets held for sale      
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]      
Financial liabilities $ 0 $ 0  
[1] In 2024, the amount includes a $1.0bn loss on disposal and a $5.2bn loss on the recycling in foreign currency translation reserve losses and other reserves
arising on sale of our business in Argentina. This was partly offset by a gain of $4.6bn, inclusive of the recycling of $0.6bn in foreign currency translation reserve
losses and $0.4bn of other reserves losses but excluding the $0.3bn gain on the foreign exchange hedging (see footnote 4 above) on the sale of our banking
business in Canada. The amount in 2023 primarily reflected losses due to restrictions impacting the recoverability of assets in Russia, partly offset by a gain on
sale of our retail banking operations in France.