Quarterly report [Sections 13 or 15(d)]

Derivatives - Other Risk Management Derivatives (Details)

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Derivatives - Other Risk Management Derivatives (Details) - Other income - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Interest rate risk on mortgage activities    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) on derivatives not designated as hedging $ 0 $ 28
Credit risk on loans    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) on derivatives not designated as hedging 1 1
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 (12) (782)
Price risk on certain compensation plans    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) on derivatives not designated as hedging $ (174) $ (196)