Derivatives - Other Risk Management Derivatives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Interest rate and foreign currency risk on asset and liability management activities
Derivative Instruments, Gain (Loss) [Line Items]
Positive market valuation adjustments on interest rate swaps			$ 447
Other income \| Interest rate risk on mortgage activities
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives not designated as hedging	$ 68	$ (49)	16
Other income \| Credit risk on loans
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives not designated as hedging	(40)	(52)	(70)
Market making and similar activities \| 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	(2,370)	952	777
Compensation and benefits \| Price risk on certain compensation plans
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives not designated as hedging	$ 537	$ 427	$ 584