Accumulated Other Comprehensive (Loss) Income - Amount of Income Tax Benefit (Expense) Allocated to Component of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity [Abstract]
Foreign Currency Translation, Other comprehensive (loss) income, before tax	$ (100,069)	$ (9,550)	$ (100,379)	$ (95,517)
Foreign Currency Translation, Income tax (expense) benefit	0	1	(1)	2
Foreign currency translation, Other comprehensive (loss) income, net of tax	(100,069)	(9,549)	(100,380)	(95,515)
Pension and Postretirement Benefits, Other comprehensive (loss) income, before tax	(3)	13	10	43
Pension and Postretirement Benefits, Income tax (expense) benefit	(2)	(2)	(2)	(6)
Pension and Postretirement Benefits, Other comprehensive (loss) income, net of tax	(5)	11	8	37
Net investment hedge, Other comprehensive (loss) income, before tax	16,584	(4,704)	16,932	6,426
Net investment hedge, Income tax (expense) benefit	(3,839)	1,083	(3,920)	(1,479)
Net investment hedge, Other comprehensive (loss) income, net of tax	12,745	(3,621)	13,012	4,947
Interest rate swap, Other comprehensive (loss) income, before tax	834	834	2,502	2,502
Interest rate swap, Income tax (expense) benefit	(193)	(192)	(579)	(576)
Interest rate swap, Other comprehensive (loss) income, net of tax	$ 641	$ 642	$ 1,923	$ 1,926