CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Investment in real estate
Land	$ 4,158,288	$ 4,110,275
Depreciable property	15,055,570	15,226,512
Projects under development	119,433	130,337
Land held for development	205,476	235,247
Investment in real estate	19,538,767	19,702,371
Accumulated depreciation	(4,405,479)	(4,337,357)
Investment in real estate, net	15,133,288	15,365,014
Cash and cash equivalents	45,986	431,408
Investments in unconsolidated entities	11,020	3,167
Deposits - restricted	369,461	180,987
Escrow deposits - mortgage	10,677	12,593
Deferred financing costs, net	37,334	42,033
Other assets	149,051	148,992
Total assets	15,756,817	16,184,194
Liabilities:
Mortgage notes payable	4,136,848	4,762,896
Notes, net	4,614,323	5,185,180
Lines of credit	26,000	0
Accounts payable and accrued expenses	97,845	39,452
Accrued interest payable	69,895	98,631
Other liabilities	409,591	304,202
Security deposits	62,073	60,812
Distributions payable	106,673	140,905
Total liabilities	9,523,248	10,592,078
Commitments and contingencies
Redeemable Noncontrolling Interests - Operating Partnership	378,798	383,540
Shareholders' equity:
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares authorized; 1,600,000 shares issued and outstanding as of September 30, 2011 and December 31, 2010	200,000	200,000
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares authorized; 296,620,833 shares issued and outstanding as of September 30, 2011 and 290,197,242 shares issued and outstanding as of December 31, 2010	2,966	2,902
Paid in capital	5,032,863	4,741,521
Retained earnings	684,902	203,581
Accumulated other comprehensive (loss)	(185,032)	(57,818)
Total shareholders' equity	5,735,699	5,090,186
Noncontrolling Interests:
Operating Partnership	120,786	110,399
Partially Owned Properties	(1,714)	7,991
Total Noncontrolling Interests	119,072	118,390
Total equity	5,854,771	5,208,576
Total liabilities and equity	$ 15,756,817	$ 16,184,194