CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ASSETS:
Property, net	$ 7,932,563	$ 7,479,546
Cash and cash equivalents	68,814	65,793
Restricted cash	78,128	78,658
Marketable securities	23,612	23,667
Tenant and other receivables, net	99,767	103,744
Deferred charges and other assets, net	579,302	565,130
Loans to unconsolidated joint ventures	3,366	3,345
Due from affiliates	31,197	17,068
Investments in unconsolidated joint ventures	945,935	974,258
Total assets	9,762,684	9,311,209
Mortgage notes payable:
Related parties	273,328	274,609
Others	4,637,327	4,162,734
Total	4,910,655	4,437,343
Bank and other notes payable	797,138	824,027
Accounts payable and accrued expenses	89,237	70,251
Other accrued liabilities	326,095	318,174
Distributions in excess of investments in unconsolidated joint ventures	193,608	152,948
Co-venture obligation	89,360	92,215
Total liabilities	6,406,093	5,894,958
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value, 250,000,000 shares authorized, 137,628,403 and 137,507,010 shares issued and outstanding at March 31, 2013 and December 31, 2012, respectively	1,376	1,375
Additional paid-in capital	3,717,091	3,715,895
Accumulated deficit	(701,447)	(639,741)
Total stockholders' equity	3,017,020	3,077,529
Noncontrolling interests	339,571	338,722
Total equity	3,356,591	3,416,251
Total liabilities and equity	$ 9,762,684	$ 9,311,209