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Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Derivative [Line Items]    
Pre-tax net unrealized loss $ (5,687,885) $ (5,168,361)
Unrealized loss on hedging instruments    
Derivative [Line Items]    
Pre-tax net unrealized loss $ 300