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Derivative Instruments - Summary of Unrealized Gain (Loss) Recorded In and Reclassified From Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]      
(Loss) Gain Recognized in Comprehensive Income (Effective Portion) $ 0 $ (7,950) $ 13,709
Gain Reclassified from AOCI to Income (Effective Portion) 0 11,818 2,446
Interest expense (100,894) (125,042) (188,431)
Interest rate swaps | Interest expense      
Derivative Instruments, Gain (Loss) [Line Items]      
(Loss) Gain Recognized in Comprehensive Income (Effective Portion) 0 (11,818) 5,772
Gain Reclassified from AOCI to Income (Effective Portion) 0 11,818 (2,446)
Cross currency swaps      
Derivative Instruments, Gain (Loss) [Line Items]      
(Loss) Gain Recognized in Comprehensive Income (Effective Portion) 0 3,868 7,937
Gain Reclassified from AOCI to Income (Effective Portion) $ 0 $ 0 $ 0