Fee Income from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Deferred fee income	$ 3		$ 3		$ 3
Credit card fees, net
Disaggregation of Revenue [Line Items]
Interchange fees	27	$ 29	53	$ 54
Rewards program costs	$ 17	$ 15	$ 33	$ 30