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Derivative Instruments - Non-hedge Derivatives (Details) - Not Designated as Hedging Instrument - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ (308) $ 53 $ 846
Notional 4,075,480 3,241,040  
Estimated fair value (744) [1] (56,720)  
Assets      
Derivative [Line Items]      
Notional 2,037,740 1,620,520  
Estimated fair value 66,462 [1] 39,763  
Liabilities      
Derivative [Line Items]      
Notional 2,037,740 1,620,520  
Estimated fair value $ (67,206) [1] $ (96,483)  
[1] The variation margin payments for derivatives cleared through central clearing houses are characterized as settlements. At December 31, 2023, no notional amounts of 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 variation margin payments.