Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Commitments to Extend Credit (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Commitments to extend credit	$ 62,541	$ 44,016
Allowance for unfunded credit commitments	636	422	$ 448	$ 305
Unfunded credit commitments
Other Commitments [Line Items]
Allowance for unfunded credit commitments	303	171	$ 121	$ 68
Loan commitments
Other Commitments [Line Items]
Commitments to extend credit	58,891	40,327
Standby letters of credit
Other Commitments [Line Items]
Commitments to extend credit	3,567	3,612
Commercial letters of credit
Other Commitments [Line Items]
Commitments to extend credit	$ 83	$ 77