Fee Income from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Deferred fee income	$ 3	$ 3
Credit card fees, net
Disaggregation of Revenue [Line Items]
Interchange fees	108	105	$ 104
Rewards program costs	$ 66	$ 66	$ 65