Noninterest Income - Lending Related Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 20	$ 21	$ 65	$ 55
Unused commitment fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	14	14	49	42
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 6	$ 7	$ 16	$ 13