CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Investment in real estate
Land	$ 6,201,333	$ 4,554,912
Depreciable property	19,254,957	15,711,944
Projects under development	779,053	387,750
Land held for development	505,494	353,823
Real Estate Investment Property, at Cost	26,740,837	21,008,429
Real Estate Investment Property, Accumulated Depreciation	(4,654,594)	(4,912,221)
Investment in real estate, net	22,086,243	16,096,208
Cash and cash equivalents	972,761	612,590
Investments in unconsolidated entities	165,898	17,877
Deposits - restricted	98,874	250,442
Escrow deposits - mortgage	40,901	9,129
Deferred financing costs, net	66,775	44,382
Other assets	379,979	170,372
Total assets	23,811,431	17,201,000
Liabilities:
Mortgage notes payable	6,230,675	3,898,369
Notes, net	5,476,522	4,630,875
Lines of credit	0	0
Accounts payable and accrued expenses	166,939	38,372
Accrued interest payable	85,353	76,223
Other liabilities	331,797	304,518
Security deposits	71,462	66,988
Distributions payable	149,836	260,176
Total liabilities	12,512,584	9,275,521
Commitments and contingencies
Redeemable Noncontrolling Interests - Operating Partnership	376,057	398,372
Shareholders' equity:
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares authorized; 1,000,000 shares issued and outstanding as of September 30, 2013 and December 31, 2012	50,000	50,000
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares authorized; 360,395,959 shares issued and outstanding as of September 30, 2013 and 325,054,654 shares issued and outstanding as of December 31, 2012	3,604	3,251
Paid in capital	8,542,822	6,542,355
Retained earnings	2,171,603	887,355
Accumulated other comprehensive (loss)	(169,392)	(193,148)
Total shareholders' equity	10,598,637	7,289,813
Noncontrolling Interests:
Operating Partnership	213,518	159,606
Noncontrolling Interests - Partially Owned Properties	110,635	77,688
Total Noncontrolling Interests	324,153	237,294
Total equity	10,922,790	7,527,107
Total liabilities and equity	$ 23,811,431	$ 17,201,000