Derivatives and Hedging Activities - Fair Value of Derivative Assets by Type (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 324	$ 589
Plus (Less): Related collateral	(75)	(408)
Derivative assets	249	181
Interest rate
Credit Derivatives [Line Items]
Derivative assets before collateral	58	123
Foreign exchange
Credit Derivatives [Line Items]
Derivative assets before collateral	81	42
Commodity
Credit Derivatives [Line Items]
Derivative assets before collateral	170	409
Credit
Credit Derivatives [Line Items]
Derivative assets before collateral	0	0
Other
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 15	$ 15