Accumulated 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
Accumulated other comprehensive income/(loss), beginning balance			$ (153,457)	$ (72,252)
Other comprehensive loss before reclassifications			(6,131)	(8,489)
Amounts reclassified from accumulated other comprehensive loss, net of tax			(8,673)	(852)
Current period change	$ (38,417)	$ 43,663	(14,804)	(9,341)
Accumulated other comprehensive income/(loss), ending balance	(168,261)	(81,593)	(168,261)	(81,593)
Foreign Currency Translation Adjustment [Member]
Accumulated other comprehensive income/(loss), beginning balance			(156,146)	(70,746)
Other comprehensive loss before reclassifications			(1,491)	(5,843)
Amounts reclassified from accumulated other comprehensive loss, net of tax			0	0
Current period change			(1,491)	(5,843)
Accumulated other comprehensive income/(loss), ending balance	(157,637)	(76,589)	(157,637)	(76,589)
Defined Benefit Plans [Member]
Accumulated other comprehensive income/(loss), beginning balance			11,005	1,405
Other comprehensive loss before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive loss, net of tax			2,924	106
Current period change			2,924	106
Accumulated other comprehensive income/(loss), ending balance	13,929	1,511	13,929	1,511
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]
Accumulated other comprehensive income/(loss), beginning balance			(8,316)	(2,911)
Other comprehensive loss before reclassifications			(4,640)	(2,646)
Amounts reclassified from accumulated other comprehensive loss, net of tax			(11,597)	(958)
Current period change			(16,237)	(3,604)
Accumulated other comprehensive income/(loss), ending balance	$ (24,553)	$ (6,515)	(24,553)	(6,515)
Tax (provision)/benefit on amounts reclassified from AOCI for defined benefit plans			(791)	7,731
Tax (provision)/benefit on amounts reclassified from AOCI for cash flow hedges			$ (60)	$ 638