Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Real estate assets:
Land	$ 926,423	$ 928,025
Buildings and improvements	7,585,004	7,543,326
Real estate investment property, at cost	8,511,427	8,471,351
Accumulated depreciation	(1,883,878)	(1,721,194)
Real estate investment property, net, before developments in progress	6,627,549	6,750,157
Developments in progress	151,271	139,980
Net investment in real estate assets	6,778,820	6,890,137
Cash and cash equivalents	61,912	50,896
Receivables:
Tenant Receivable, net of allowance for doubtful accounts	79,471	77,989
Other Receivables	12,347	11,996
Mortgage and other notes receivable	26,942	30,519
Investments in unconsolidated affiliates	179,504	179,410
Intangible lease assets and other assets	283,499	265,607
Total assets	7,422,495	7,506,554
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Mortgage and other indebtedness	5,233,148	5,209,747
Accounts payable and accrued liabilities	314,828	314,651
Total liabilities	5,547,976	5,524,398
Commitments and contingencies (Notes 5 and 11)
Redeemable noncontrolling interests:
Redeemable noncontrolling partnership interests	24,507	34,379
Redeemable noncontrolling preferred joint venture interest	423,834	423,834
Total redeemable noncontrolling interests	448,341	458,213
Preferred stock, $.01 par value, 15,000,000 shares authorized:
7.75% Series C Cumulative Redeemable Preferred Stock, 460,000 shares outstanding	5	5
7.375% Series D Cumulative Redeemable Preferred Stock, 1,815,000 shares outstanding	18	18
Common stock, $.01 par value, 350,000,000 shares authorized, 148,361,580 and 147,923,707 issued and outstanding in 2011 and 2010, respectively	1,484	1,479
Additional paid-in capital	1,667,294	1,657,507
Accumulated other comprehensive income	961	7,855
Dividends in excess of cumulative earnings	(440,798)	(366,526)
Total shareholders' equity	1,228,964	1,300,338
Noncontrolling interests	197,214	223,605
Total equity	1,426,178	1,523,943
Total Liabilities, Redeemable Noncontrolling Interests and Equity	$ 7,422,495	$ 7,506,554