Quarterly report [Sections 13 or 15(d)]

Derivatives - Other Risk Management Derivatives (Details)

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Derivatives - Other Risk Management Derivatives (Details) - Income Statement Location [Axis]: us-gaap:NoninterestIncomeOtherOperatingIncome - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Interest rate risk on mortgage activities        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging $ 3 $ 12 $ 3 $ 40
Credit risk on loans        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging (16) (23) (15) (22)
Interest rate and foreign currency risk on asset and liability management activities        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging (266) (1,704) (278) (2,486)
Price risk on certain compensation plans        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging $ 538 $ 377 $ 364 $ 181