Derivative and Hedging Activities - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Derivative [Line Items]
Interest income	$ 332	$ 318
Gain (losses) on interest rate derivatives designated as cash flow hedge	6
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	15
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	2,050		$ 2,250
Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	0
Interest income	6	$ 12
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative, notional amount	$ 2,000
Derivative, expired period	2022-02
LCH | Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative, notional amount	$ 2,100