Derivative Financial Instruments - Fair Value Hedges (Details) - Interest rate swaps - Other assets - Derivatives designated as hedging instruments - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Amortized Cost Basis of the Hedged Assets	$ 8,773	$ 15,260
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets, Active	0	(131)
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets, Terminated	$ (301)	6
Amortized cost of hedged items where the hedged item is the last layer expected to be remaining at the end of the hedging relationship		11,200
Amount of hedged items where the hedged item is the last layer expected to be remaining at the end of the hedging relationship		6,700
Cumulative adjustments of hedged items where the hedged item is the last layer expected to be remaining at the end of the hedging relationship		$ 83