Derivative Instruments And Hedging Activities - Impact of Derivative Instruments Designated as Hedging Instruments on Accumulated OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivatives, Net of Tax (Effective Portion)	$ 4,499	$ (6,525)
Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivatives, Net of Tax (Effective Portion)	5,822	(6,361)
Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivatives, Net of Tax (Effective Portion)	$ (1,323)	$ (164)