Derivative Instruments (Summary Of The Effect Of Derivative Instruments On The Consolidated Statements Of Changes In Equity And Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ 6,148		$ 2,020
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	(276)		(476)
Interest Rate Swap [Member]
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	(449)	[1]	(423)	[1]
Cross Currency Swaps [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	1,833		291
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	173	[2]	(102)	[2]
Currency Forward Agreements [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	4,928		1,935
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	0	[2]	49	[2]
Interest Expense [Member] | Interest Rate Swap [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ (613)		$ (206)

[1] Included in "Interest expense, net" in the accompanying consolidated statements of income for the three months ended March 31, 2014 and 2013.

[2] Included in "Other income" and “Other expense” in the accompanying consolidated statements of income for the three months ended March 31, 2014 and 2013.