Accumulated Other Comprehensive Income/(Loss) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated other comprehensive income/(loss), beginning balance	$ (153,457,000)	$ (72,252,000)
Other comprehensive income/(loss) before reclassifications	21,860,000	(52,606,000)
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax	1,753,000	(399,000)
Current period change	23,613,000	(53,005,000)
Accumulated other comprehensive income/(loss), ending balance	(129,844,000)	(125,257,000)
Foreign Currency Translation Adjustment [Member]
Accumulated other comprehensive income/(loss), beginning balance	(156,146,000)	(70,746,000)
Other comprehensive income/(loss) before reclassifications	31,121,000	(46,747,000)
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax	0	0
Current period change	31,121,000	(46,747,000)
Accumulated other comprehensive income/(loss), ending balance	(125,025,000)	(117,493,000)
Defined Benefit Plans [Member]
Accumulated other comprehensive income/(loss), beginning balance	11,005,000	1,405,000
Other comprehensive income/(loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax	1,923,000	53,000
Current period change	1,923,000	53,000
Accumulated other comprehensive income/(loss), ending balance	12,928,000	1,458,000
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]
Accumulated other comprehensive income/(loss), beginning balance	(8,316,000)	(2,911,000)
Other comprehensive income/(loss) before reclassifications	(9,261,000)	(5,859,000)
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax	(170,000)	(452,000)
Current period change	(9,431,000)	(6,311,000)
Accumulated other comprehensive income/(loss), ending balance	(17,747,000)	(9,222,000)
Tax provision on amounts reclassified from AOCI for defined benefit plans	(520,000)	(30,000)
Tax benefit on amounts reclassified from AOCI for cash flow hedges	$ 113,000	$ 301,000