Summary Of Significant Accounting Policies And Recent Accounting Pronouncements (Expected Useful Lives Of Depreciable Property) (Details)	9 Months Ended
	Sep. 30, 2011
Intangible assets (in-place leases and above and below market leases)	underlying lease term
Buildings And Improvements [Member]
Minimum Estimated Useful Life (in years)	5
Maximum Estimated Useful Life (in years)	35
Furniture, Fixtures, Equipment, And Other [Member]
Minimum Estimated Useful Life (in years)	3
Maximum Estimated Useful Life (in years)	20