Other Assets - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2012 agreement
Related Party Transactions
TRA payment	$ 11	$ 22	$ 46
Other noninterest income
Related Party Transactions
TRA payment	$ 11	22	$ 46
Worldpay, Inc.
Related Party Transactions
TRA receivable		$ 35
Affiliated Entity | Worldpay, Inc.
Related Party Transactions
Number of TRAs entered into | agreement					2
Percentage of cash savings activity					85.00%
Fidelity National Information Services, Inc. and Worldpay, Inc
Related Party Transactions
Payment to terminate and settle certain remaining TRA cash flows				$ 366
Potential termination and settlement of TRA cash flows				720
Fidelity National Information Services, Inc. and Worldpay, Inc | Other noninterest income
Related Party Transactions
Gain from exercise of options				$ 345