Accumulated Other Comprehensive (Loss) Income - Components and Activity in Accumulated Other Comprehensive (Loss) Income Net of Deferred Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ 4,206,161	$ 3,974,403	$ 4,093,580	$ 3,759,108
Other comprehensive income (loss), before reclassifications	32,074	(87,324)	(4,555)	(87,368)
Amounts reclassified from accumulated other comprehensive loss	657	636	1,970	1,931
Total other comprehensive income (loss), net of tax	32,731	(86,688)	(2,585)	(85,437)
Other comprehensive (income) loss attributable to noncontrolling interests	(67)	122	(147)	142
Ending Balance	4,325,381	4,008,337	4,325,381	4,008,337
Foreign Currency Translation
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(488,429)	(407,937)	(469,210)	(407,646)
Other comprehensive income (loss), before reclassifications	37,489	(100,069)	18,350	(100,380)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Total other comprehensive income (loss), net of tax	37,489	(100,069)	18,350	(100,380)
Other comprehensive (income) loss attributable to noncontrolling interests	(67)	122	(147)	142
Ending Balance	(451,007)	(507,884)	(451,007)	(507,884)
Pension and Postretirement Benefits
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	490	(146)	473	(159)
Other comprehensive income (loss), before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	10	(5)	27	8
Total other comprehensive income (loss), net of tax	10	(5)	27	8
Other comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Ending Balance	500	(151)	500	(151)
Net Investment Hedge
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	77,103	72,604	80,778	72,337
Other comprehensive income (loss), before reclassifications	(12,408)	12,745	(16,083)	13,012
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Total other comprehensive income (loss), net of tax	(12,408)	12,745	(16,083)	13,012
Other comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Ending Balance	64,695	85,349	64,695	85,349
Cash Flow Hedge
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(8,968)	0	4,847	0
Other comprehensive income (loss), before reclassifications	6,993	0	(6,822)	0
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Total other comprehensive income (loss), net of tax	6,993	0	(6,822)	0
Other comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Ending Balance	(1,975)	0	(1,975)	0
Interest Rate Swap
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(11,327)	(13,932)	(12,623)	(15,214)
Other comprehensive income (loss), before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	647	641	1,943	1,923
Total other comprehensive income (loss), net of tax	647	641	1,943	1,923
Other comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Ending Balance	(10,680)	(13,291)	(10,680)	(13,291)
Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(431,131)	(349,411)	(395,735)	(350,682)
Total other comprehensive income (loss), net of tax	32,664	(86,566)	(2,732)	(85,295)
Ending Balance	$ (398,467)	$ (435,977)	$ (398,467)	$ (435,977)