Derivative Instruments - Non-hedge Derivatives (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Derivative [Line Items]
Notional Amount		$ 3,766,486		$ 3,766,486		$ 3,241,040
Estimated Fair Value (1)	[1]	(1,328)		(1,328)		(56,720)
Derivative, Gain (Loss) on Derivative, Net		(519)	$ (40)	(582)	$ 241
Assets
Derivative [Line Items]
Notional Amount		1,883,243		1,883,243		1,620,520
Estimated Fair Value (1)	[1]	95,102		95,102		39,763
Liabilities
Derivative [Line Items]
Notional Amount		1,883,243		1,883,243		1,620,520
Estimated Fair Value (1)	[1]	$ (96,430)		$ (96,430)		$ (96,483)

[1] The variation margin payments for derivatives cleared through central clearing houses are characterized as settlements. At June 30, 2023 and December 31, 2022, the notional amount of interest rate swap agreements designated as non-hedge derivatives cleared through clearing houses was $68.3 million and $827.3 million with a fair value that approximates zero due to $329,000 and $56.3 million in received variation margin payments.