Accumulated Other Comprehensive (Loss) Income Amount of Income Tax (Expense) Benefit Allocated to Component of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Foreign currency translation, Other comprehensive (loss) income, before tax	$ (20,849)	$ (451,762)	$ (163,319)
Foreign currency translation, Income tax benefit (expense)	24	38,792	(5,354)
Foreign currency translation, Other comprehensive (loss) income, net of tax	(20,825)	(412,970)	(168,673)
Pension and other postretirement benefits, Other comprehensive (loss) income, before tax	839	(751)	(772)
Pension and other postretirement benefits, Income tax benefit (expense)	(5)	(7)	285
Pension and other postretirement benefits, Other comprehensive (loss) income, net of tax	834	(758)	(487)
Net investment hedge, Other comprehensive (loss) income, before tax	41,209	80,746	17,971	[1]
Net investment hedge, Income tax benefit (expense)	(15,076)	(29,885)	(6,587)
Net investment hedge, Other comprehensive (loss) income, net of tax	26,133	50,861	11,384
Interest rate swap, Other comprehensive (loss) income, before tax	3,336	3,336	(33,091)	[2]
Interest rate swap, Income tax benefit (expense)	(1,220)	(1,235)	12,129
Interest rate swap, Other comprehensive (loss) income, net of tax	$ 2,116	$ 2,101	$ (20,962)

[1] Other comprehensive (loss) income, before tax, for the year ended December 31, 2014 includes $12.8 million related to the revaluation of our Euro-denominated senior notes and a $5.2 million gain on the settlement of related foreign currency forward contracts, both of which were designated as a hedge of our net investment in foreign operations. See Note 14, “Long-Term Debt” for additional information about these transactions.

[2] Other comprehensive (loss) income, before tax, for the year ended December 31, 2014 includes a realized loss of ($33.4) million on the settlement of our forward starting interest rate swap which was designated and accounted for as a cash flow hedge under ASC 815, Derivatives and Hedging. See Note 14, “Long-Term Debt” for additional information about this interest rate swap.