Derivative Instruments (Summary Of The Effect Of Derivative Instruments On The Consolidated Statements Of Changes In Equity And Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ (2,771)		$ (9,132)		$ 10,780	$ (2,984)
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	41		(372)		144	(648)
Interest Rate Swap [Member]
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	(442)	[1]	(460)	[1]	(885)	(909)
Cross Currency Swaps [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	(508)		(1,808)		2,554	25
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	483	[2]	88	[2]	1,029	261
Currency Forward Agreements [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	(1,978)		(5,879)		10,013	(951)
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	0	[2]	0	[2]	0	0
Interest Expense [Member] | Interest Rate Swap [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ (285)		$ (1,445)		$ (1,787)	$ (2,058)

[1] (1)Included in "Interest expense, net" in the accompanying consolidated statements of income for the three and six months ended June 30, 2015 and 2014.

[2] Included in "Other income" in the accompanying consolidated statements of income for the three and six months ended June 30, 2015 and 2014.