Business Segments - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Lease revenue	$ 185	$ 190	$ 554	$ 582
Payment Services [Member]
Rewards and Rebate Costs and Certain Partner Payments Included in Noninterest Income	762	754	2,200	2,200
Revenue generated from certain contracts with customers included in non-interest income	$ 2,200	$ 2,100	$ 6,600	$ 6,000