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Summary of Significant Accounting Policies - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Beginning balance $ 8,541,158 $ 8,126,448 $ 7,440,059
Ending balance 8,428,216 8,541,158 8,126,448
Foreign currency translation adjustments      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Beginning balance (680,255) (753,108) (782,102)
Current period other comprehensive income (loss) before reclassifications (278,944) 72,853 28,994
Ending balance (959,199) (680,255) (753,108)
Prior pension and post-retirement benefit service cost and actuarial gain (loss)      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Beginning balance (14,890) (12,716) (9,506)
Current period other comprehensive income (loss) before reclassifications 7,137 (2,174) (3,210)
Ending balance (7,753) (14,890) (12,716)
AOCI including portion attributable to noncontrolling interest      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Beginning balance (695,145) (765,824) (791,608)
Current period other comprehensive income (loss) before reclassifications (271,807) 70,679 25,784
Ending balance $ (966,952) $ (695,145) $ (765,824)