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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Real estate properties:    
Land $ 1,440,845 $ 1,339,133
Buildings and improvements 5,446,227 5,018,125
Total real estate properties, at cost, gross 6,887,072 6,357,258
Accumulated depreciation (922,597) (850,261)
Total real estate properties, at cost, net 5,964,475 5,506,997
Properties held for sale 51,127 114,426
Acquired real estate leases, net 287,241 233,913
Equity investments 168,871 171,464
Cash and cash equivalents 55,035 194,040
Restricted cash 5,109 5,082
Rents receivable, net of allowance for doubtful accounts of $12,316 and $12,550, respectively 203,304 191,237
Other assets, net 224,837 171,380
Total assets 6,959,999 6,588,539
LIABILITIES AND SHAREHOLDERS' EQUITY    
Revolving credit facility 230,000  
Senior unsecured debt, net 2,687,172 2,854,540
Mortgage notes payable, net 380,597 351,526
Liabilities related to properties held for sale 379 1,492
Accounts payable and accrued expenses 137,357 123,842
Assumed real estate lease obligations, net 69,836 65,940
Rent collected in advance 31,579 27,988
Security deposits 23,284 22,523
Due to affiliates 11,621 8,998
Total liabilities 3,571,825 3,456,849
Common shares of beneficial interest, $0.01 par value:    
Common shares of beneficial interest, $0.01 par value: 350,000,000 shares authorized; 72,148,686 and 72,138,686 shares issued and outstanding, respectively 721 721
Additional paid in capital 3,349,114 3,348,849
Cumulative net income 2,438,913 2,372,337
Cumulative other comprehensive income 18,363 4,706
Cumulative common distributions (2,748,095) (2,675,956)
Cumulative preferred distributions (449,931) (432,252)
Total shareholders' equity 3,388,174 3,131,690
Total liabilities and shareholders' equity 6,959,999 6,588,539
Series C
   
50,000,000 shares authorized;    
Preferred shares of beneficial interest, $0.01 par value: 145,015 145,015
Series D
   
50,000,000 shares authorized;    
Preferred shares of beneficial interest, $0.01 par value: 368,270 368,270
Series E
   
50,000,000 shares authorized;    
Preferred shares of beneficial interest, $0.01 par value: $ 265,804