v3.26.1
Segmental analysis - Constant currency balance sheet reconciliation (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Disclosure of operating segments [line items]      
Loans and advances to customers (net) $ 1,022,105 $ 988,399 $ 981,722
Interests in associates and joint ventures 31,333 29,577 28,202
Total external assets 3,438,161 3,233,034 3,214,371
Customer accounts 1,827,703 1,786,828 1,718,604
Constant currency      
Disclosure of operating segments [line items]      
Loans and advances to customers (net) 1,022,105 981,950 971,039
Interests in associates and joint ventures 31,333 30,026 29,049
Total external assets 3,438,161 3,206,415 3,175,982
Customer accounts $ 1,827,703 1,771,972 1,697,599
Currency translation      
Disclosure of operating segments [line items]      
Loans and advances to customers (net)   (6,449) (10,683)
Interests in associates and joint ventures   449 847
Total external assets   (26,619) (38,389)
Customer accounts   $ (14,856) $ (21,005)