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	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance			$ 3,817,696	$ 3,942,604
Other comprehensive (loss) income, before reclassifications	$ (127,868)	$ 49,835	(77,398)	115,205
Amounts reclassified from accumulated other comprehensive loss	665	545	1,310	1,067
Total other comprehensive (loss) income, net of tax	(127,203)	50,380	(76,088)	116,272
Other comprehensive (loss) income attributable to noncontrolling interests	263	(232)	77	(693)
Ending Balance	3,837,280	3,899,791	3,837,280	3,899,791
Foreign Currency Translation
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(192,864)	(405,527)	(257,569)	(484,121)
Other comprehensive (loss) income, before reclassifications	(150,857)	64,069	(85,966)	143,124
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Total other comprehensive (loss) income, net of tax	(150,857)	64,069	(85,966)	143,124
Other comprehensive (loss) income attributable to noncontrolling interests	263	(232)	77	(693)
Ending Balance	(343,458)	(341,690)	(343,458)	(341,690)
Pension and Postretirement Benefits
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(18)	69	(21)	76
Other comprehensive (loss) income, before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	23	16	26	9
Total other comprehensive (loss) income, net of tax	23	16	26	9
Other comprehensive (loss) income attributable to noncontrolling interests	0	0	0	0
Ending Balance	5	85	5	85
Net Investment Hedge
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	32,130	74,693	46,551	88,378
Other comprehensive (loss) income, before reclassifications	22,989	(14,234)	8,568	(27,919)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Total other comprehensive (loss) income, net of tax	22,989	(14,234)	8,568	(27,919)
Other comprehensive (loss) income attributable to noncontrolling interests	0	0	0	0
Ending Balance	55,119	60,459	55,119	60,459
Interest Rate Swap
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(13,987)	(16,216)	(14,629)	(16,745)
Other comprehensive (loss) income, before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	642	529	1,284	1,058
Total other comprehensive (loss) income, net of tax	642	529	1,284	1,058
Other comprehensive (loss) income attributable to noncontrolling interests	0	0	0	0
Ending Balance	(13,345)	(15,687)	(13,345)	(15,687)
Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(174,739)	(346,981)	(225,668)	(412,412)
Total other comprehensive (loss) income, net of tax			(76,011)	115,579
Ending Balance	$ (301,679)	$ (296,833)	$ (301,679)	$ (296,833)

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- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to noncontrolling interests.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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