Derivative Financial Instruments - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Derivative
Amount of variation margin payment applied to derivative asset contracts	$ 854,000,000		$ 1,000,000,000
Valuation adjustments related to the credit risk associated with counterparties of customer accommodation derivative contracts	10,000,000		9,000,000
Collateral for derivative liabilities	1,985,000,000		2,140,000,000
Amount of variation margin payment applied to derivative liability contracts	684,000,000		1,000,000,000
Gain or losses reclassified from AOCI into earnings associated with the discontinuance of cash flow hedges	0	$ 0
Notional amount of the risk participations agreements	3,871,000,000		3,710,000,000
Interest rate contracts | Credit Risk
Derivative
Fair value of risk participation agreements	$ 8,000,000		7,000,000
Weighted-average remaining life	3 years 6 months
Cash Flow Hedging | Interest rate contracts
Derivative
Maximum length of time of hedging exposure	106 months
Deferred gain (loss), net of tax, on cash flow hedges recorded in accumulated other comprehensive income	$ 233,000,000		498,000,000
Net deferred gain (loss), net of tax, recorded in AOCI are expected to be reclassified into earnings	265,000,000
Total collateral
Derivative
Collateral held for derivative assets	1,500,000,000		1,300,000,000
Collateral for derivative liabilities	$ 853,000,000		$ 913,000,000