Real Estate (Summary Of Real Estate Subject To Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Subject to or Available for Operating Lease [Line Items]
Real Estate Subject to Operating Leases, Gross	$ 4,609,159	$ 4,039,693
Less accumulated depreciation and amortization	(416,477)	(332,156)
Real estate subject to operating leases before work in process	4,192,682	3,707,537
Work in progress	60,720	86,579	60,322
Real estate subject to operating leases, net	4,253,364	3,794,044
Deferred Revenue, Revenue Recognized	(338)	487	(222)
Deferred Revenue, Leases, Allowances	3,181	3,270
Deferred Revenue, Leases, Net	24,797	25,458
Land and improvements
Property Subject to or Available for Operating Lease [Line Items]
Land and improvements	1,650,651	1,474,299
Buildings and improvements
Property Subject to or Available for Operating Lease [Line Items]
Buildings and improvements	2,957,218	2,564,104
Leasehold interests
Property Subject to or Available for Operating Lease [Line Items]
Leasehold interests	1,290	1,290
Work in progress
Property Subject to or Available for Operating Lease [Line Items]
Work in progress	$ 60,682	$ 86,507