Business Segments - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Lease revenue	$ 186	$ 188	$ 369	$ 392
Payment Services [Member]
Rewards and Rebate Costs and Certain Partner Payments Included in Noninterest Income	760	772	1,500	1,400
Revenue generated from certain contracts with customers included in non-interest income	$ 2,200	$ 2,000	$ 4,300	$ 3,900