XML 105 R66.htm IDEA: XBRL DOCUMENT v2.4.0.6
Real Estate Owned (UNITED DOMINION REALTY, L.P.) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Summary of carrying amounts for real estate owned (at cost)    
Land $ 1,945,846 $ 1,907,169
Depreciable property - held and used:    
Building and improvements 5,502,984 5,384,971
Furniture, fixtures and equipment 280,470 272,640
Under development:    
Under development 451,683 489,795
Real estate owned 8,182,116 8,055,828
Accumulated depreciation (2,007,482) (1,924,682)
Total real estate owned, net of accumulated depreciation 6,174,634 6,131,146
Land [Member]
    
Under development:    
Under development 119,750 151,154
Construction in progress [Member]
    
Under development:    
Under development 333,066 339,894
United Dominion Reality L.P. [Member]
    
Summary of carrying amounts for real estate owned (at cost)    
Land 1,009,706 1,006,724
Depreciable property - held and used:    
Building and improvements 2,981,947 2,970,510
Furniture, fixtures and equipment 119,945 118,294
Under development:    
Under development 97,750 86,260
Real estate owned 4,210,480 4,182,920
Accumulated depreciation (1,142,440) (1,097,133)
Total real estate owned, net of accumulated depreciation 3,068,040 3,085,787
United Dominion Reality L.P. [Member] | Land [Member]
    
Under development:    
Under development 25,833 25,833
United Dominion Reality L.P. [Member] | Construction in progress [Member]
    
Under development:    
Under development $ 73,049 $ 61,559