Derivative Financial Instruments - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Derivative
Amount of variation margin payment applied to derivative asset contracts	$ 1,000,000,000	$ 771,000,000
Valuation adjustments related to the credit risk associated with counterparties of customer accommodation derivative contracts	9,000,000	20,000,000
Derivative liabilities	2,140,000,000	464,000,000
Amount of variation margin payment applied to derivative liability contracts	1,000,000,000	570,000,000
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	$ 3,710,000,000	3,780,000,000
Interest rate contracts
Derivative
Maximum length of time of hedging exposure	109 months
Deferred gains, net of tax, on cash flow hedges recorded in accumulated other comprehensive income	$ 498,000,000	353,000,000
Net deferred gains or losses, net of tax, recorded in AOCI are expected to be reclassified into earnings	253,000,000
Interest rate contracts | Credit Risk
Derivative
Fair value of risk participation agreements	$ 7,000,000	8,000,000
Weighted-average remaining life	3 years 3 months 18 days
Total collateral
Derivative
Derivative assets	$ 1,300,000,000	1,100,000,000
Derivative liabilities	$ 913,000,000	$ 1,300,000,000