Derivative Financial Instruments - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) numberOfCounterparties	Dec. 31, 2020 USD ($)
Derivative [Line Items]
Number of central counterparties | numberOfCounterparties	2
Notional derivative contracts	$ 6,589,856	$ 8,557,883
Net positive exposure	9,000	43,000
Estimated reclassification of AOCI to interest expense	13,000
Cash collateral pledged	10,000	43,000
CME
Derivative [Line Items]
Notional derivative contracts	$ 5,200,000
Notional derivative contracts, percent	94.40%
Amount of variation margin included as settlement	$ (72,000)
LCH
Derivative [Line Items]
Notional derivative contracts	$ 300,000
Notional derivative contracts, percent	5.60%
Amount of variation margin included as settlement	$ 8,000
Interest rate swaps
Derivative [Line Items]
Notional derivative contracts	$ 5,536,096	$ 8,557,883