Derivative Financial Instruments (Schedule Of Effect Of Derivative Instruments On Financial Performance) (Details) (Foreign Exchange Contract [Member], Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Other Comprehensive Income (Effective Portion)	$ 5,158	$ 4,765	$ 2,175	$ 4,727
Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from Accumulated Other Comprehensive Loss (Effective Portion)	(1,262)	(2,530)	(3,574)	(4,836)
Not Designated as Hedging Instrument [Member] | Other Income (Expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ 264	$ (604)	$ 1,991	$ (1,943)