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				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2011
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ (669)		$ (1,202)
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	(498)		(338)
Interest Rate Swap [Member]
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	(406)	[1]	0	[1]
Cross Currency Swaps [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	407		(339)
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	(108)	[2]	(286)	[2]
Currency Forward Agreements [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	1,484		(863)
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)	16	[3]	(52)	[3]
Interest Expense [Member] | Interest Rate Swap [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	(2,560)		0
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)					(137)
Costs Associated With Loan Refinancing [Member] | Interest Rate Swap [Member]
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)					(4,600)
Gain On Sale Of Real Estate [Member] | Cross Currency Swaps [Member]
Amount of Income (Expense) Reclassified from AOCI into Earnings (Effective Portion)					$ (4,300)

[1] Included in "Interest expense, net" in accompanying consolidated statements of income for the three and six months ended June 30, 2012. $4.6 million included in “Costs associated with loan refinancing or payoff” and $137 thousand included in “Interest expense, net” in accompanying consolidated statements of income for the six months ended June 30, 2011.

[2] Included in “Other expense” in the accompanying consolidated statements of income.

[3] $4.3 million included in "Gain on sale or acquisition of real estate" in the accompanying consolidated statements of income for the six months ended June 30, 2011.