v3.26.3
Derivative Instruments - Impact on Statements of Income, Risk Management Derivatives (Details) - Risk Management Activities - Not designated as hedges - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives gains/(losses) recorded in income $ 178 $ (252) $ 17 $ (359)
Interest rate        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives gains/(losses) recorded in income 246 (69) 339 (58)
Credit        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives gains/(losses) recorded in income (74) (140) (330) (374)
Foreign exchange        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives gains/(losses) recorded in income 10 (26) 18 82
Equity        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives gains/(losses) recorded in income $ (4) $ (17) $ (10) $ (9)