Derivative Instruments - Non-hedge Derivatives (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Derivative [Line Items]
Notional Amount		$ 3,773,404		$ 3,773,404		$ 3,241,040
Estimated Fair Value (1)	[1]	(1,295)		(1,295)		(56,720)
Derivative, Gain (Loss) on Derivative, Net		(265)	$ (207)	(847)	$ 34
Assets
Derivative [Line Items]
Notional Amount		1,886,702		1,886,702		1,620,520
Estimated Fair Value (1)	[1]	117,072		117,072		39,763
Liabilities
Derivative [Line Items]
Notional Amount		1,886,702		1,886,702		1,620,520
Estimated Fair Value (1)	[1]	$ (118,367)		$ (118,367)		$ (96,483)

[1] The variation margin payments for derivatives cleared through central clearing houses are characterized as settlements. At September 30, 2023, there were no interest rate swap agreements designated as non-hedge derivatives cleared through clearing houses. At December 31, 2022, the notional amount of interest rate swap agreements designated as non-hedge derivatives cleared through clearing houses was $827.3 million with a fair value that approximates zero due to $56.3 million in received variation margin payments.