Derivatives and Hedging Activities - Schedule of Fair Value of Derivative Assets by Type (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 307	$ 324
Plus(Less): Related collateral	(77)	(75)
Derivative assets	230	249
Interest rate
Credit Derivatives [Line Items]
Derivative assets before collateral	115	58
Foreign exchange
Credit Derivatives [Line Items]
Derivative assets before collateral	68	81
Commodity
Credit Derivatives [Line Items]
Derivative assets before collateral	107	170
Credit
Credit Derivatives [Line Items]
Derivative assets before collateral	0	0
Other
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 17	$ 15