Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS:
Investment properties, at cost	$ 27,496,266	$ 27,508,735
Less - accumulated depreciation	8,097,828	7,711,304
Investment properties, net	19,398,438	19,797,431
Cash and cash equivalents	789,713	796,718
Tenant receivables and accrued revenue, net	381,895	426,736
Investment in unconsolidated entities, at equity	1,345,912	1,390,105
Deferred costs and other assets	1,967,064	1,795,439
Note receivable from related party	651,000	651,000
Total assets	24,534,022	24,857,429
LIABILITIES:
Mortgages and other indebtedness	17,013,893	17,473,760
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,049,313	993,738
Cash distributions and losses in partnerships and joint ventures, at equity	606,526	485,855
Other liabilities and accrued dividends	205,028	184,855
Total liabilities	18,874,760	19,138,208
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties	90,161	85,469
Capital stock (850,000,000 total shares authorized, $.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Series J 8 3/8% cumulative redeemable preferred stock, 1,000,000 shares authorized, 796,948 issued and outstanding, with a liquidation value of $39,847	45,211	45,375
Capital in excess of par value	8,060,402	8,059,852
Accumulated deficit	(3,202,852)	(3,114,571)
Accumulated other comprehensive income	45,853	6,530
Common stock held in treasury at cost, 3,884,305 and 4,003,451 shares, respectively	(153,437)	(166,436)
Total stockholders' equity	4,795,207	4,830,780
Noncontrolling interests	773,894	802,972
Total equity	5,569,101	5,633,752
Total liabilities and equity	24,534,022	24,857,429
Class A common stock
Capital stock (850,000,000 total shares authorized, $.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Common stock	30	30
Class B common stock
Capital stock (850,000,000 total shares authorized, $.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Common stock