Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Standby Letters of Credit (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Guarantor Obligations [Line Items]
Expires in One Year or Less	$ 3,689
Expires After One Year	135
Total Amount Outstanding	3,824
Maximum Amount of Future Payments	3,824
Financial standby letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	3,617
Expires After One Year	126
Total Amount Outstanding	3,743
Maximum Amount of Future Payments	3,743
Performance standby letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	72
Expires After One Year	9
Total Amount Outstanding	81
Maximum Amount of Future Payments	81
Standby letters of credit
Guarantor Obligations [Line Items]
Deferred fees	$ 20	$ 20