Accumulated Other Comprehensive (Loss) Income Amount of Income Tax (Expense) Benefit Allocated to Component of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Equity [Abstract]
Foreign Currency Translation, Other comprehensive (loss) income, before tax	$ (50,738)	$ 59,465	$ 48,539	$ (328,329)
Foreign Currency Translation, Income tax benefit (expense)	(455)	(3,238)	(826)	30,012
Foreign Currency Translation, Other comprehensive (loss) income, net of tax	(51,193)	56,227	47,713	(298,317)
Pension and Postretirement Benefits, Other comprehensive (loss) income, before tax	422	5	426	11
Pension and Postretirement Benefits, Income tax benefit (expense)	(3)	(3)	(6)	(7)
Pension and Postretirement Benefits, Other comprehensive (loss) income, net of tax	419	2	420	4
Net investment hedge, Other comprehensive (loss) income, before tax	10,490	(17,307)	(4,631)	68,270
Net investment hedge, Income tax benefit (expense)	(3,883)	6,377	1,714	(25,154)
Net investment hedge, Other comprehensive (loss) income, net of tax	6,607	(10,930)	(2,917)	43,116
Interest rate swap, Other comprehensive (loss) income, before tax	834	834	1,668	1,668
Interest rate swap, Income tax benefit (expense)	(308)	(308)	(617)	(615)
Interest rate swap, Other comprehensive (loss) income, net of tax	$ 526	$ 526	$ 1,051	$ 1,053