v3.26.1
Derivative instruments - Revenue from Foreign Exchange and Other Trading (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Foreign exchange revenue $ 229 $ 213 $ 461 $ 369
Other trading revenue $ 59 $ 59 $ 153 $ 130