Derivative Financial Instruments - Schedule of Derivative Instruments Non-Qualifying Hedges (Details) - Not Designated as Hedging Instrument - Other noninterest income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) of non-qualifying hedges	$ 8	$ 0	$ 12	$ 0
Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) of non-qualifying hedges	2	0	6	0
Foreign currency forward contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) of non-qualifying hedges	$ 6	$ 0	$ 6	$ 0