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
Mar. 31, 2019	Mar. 31, 2018
Equity [Abstract]
Foreign Currency Translation, Other comprehensive (loss) income, before tax	$ (10,854)	$ 64,891
Foreign Currency Translation, Income tax benefit (expense)	(1)	0
Foreign currency translation, Other comprehensive (loss) income, net of tax	(10,855)	64,891
Pension and Postretirement Benefits, Other comprehensive (loss) income, before tax	7	3
Pension and Postretirement Benefits, Income tax benefit (expense)	0	0
Pension and Postretirement Benefits, Other comprehensive (loss) income, net of tax	7	3
Net investment hedge, Other comprehensive (loss) income, before tax	4,299	(18,734)
Net investment hedge, Income tax benefit (expense)	(995)	4,313
Net investment hedge, Other comprehensive (loss) income, net of tax	3,304	(14,421)
Interest rate swap, Other comprehensive (loss) income, before tax	834	834
Interest rate swap, Income tax benefit (expense)	(193)	(192)
Interest rate swap, Other comprehensive (loss) income, net of tax	$ 641	$ 642

Other Comprehensive Income (Loss), Net Investment Hedge, Net of Tax

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Other Comprehensive Income (Loss), Net Investment Hedge, Tax

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Other Comprehensive Income (Loss), Net Investment Hedge, before Tax

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Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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