Business Segments - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lease revenue	$ 190	$ 220	$ 582	$ 686
Payment Services [Member]
Rewards and Rebate Costs and Certain Partner Payments Included in Noninterest Income	754	652	2,200	1,800
Revenue generated from certain contracts with customers included in non-interest income	$ 2,100	$ 2,000	$ 6,000	$ 5,600