Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net income	$ 643,078	$ 176,632
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	136,355	118,265
Equity in net income from unconsolidated joint ventures	(10,390)	(25,381)
Distributions of cumulative earnings from unconsolidated joint ventures	7,866	15,965
Equity in net gain on sale of interest in unconsolidated joint venture		(126,769)
Purchase price fair value adjustment	(488,890)
Gain on sale of discontinued operations	(46,085)
Gain on sale of debt securities	(19,840)
Loan loss and other investment reserves, net of recoveries	(1,870)	10,985
Loss on investments in marketable securities	133	285
(Gain) loss on early extinguishment of debt	(971)	1,389
Deferred rents receivable	(44,343)	(19,177)
Other non-cash adjustments	3,774	(11,851)
Changes in operating assets and liabilities:
Restricted cash - operations	15,487	(5,468)
Tenant and other receivables	(841)	3,893
Related party receivables	1,157	2,671
Deferred lease costs	(14,534)	(13,775)
Other assets	5,169	12,109
Accounts payable, accrued expenses and other liabilities	(5,323)	16,705
Deferred revenue and land leases payable	(3,084)	(3,824)
Net cash provided by operating activities	176,848	152,654
Investing Activities
Acquisitions of real estate property	(331,972)
Additions to land, buildings and improvements	(57,442)	(34,594)
Escrowed cash - capital improvements/acquisition deposits	46,861	(54,076)
Investments in unconsolidated joint ventures	(60,321)	(81,903)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	102,089	10,339
Net proceeds from disposition of real estate/joint venture interest	150,893	504,172
Other investments	631	(7,611)
Debt and preferred equity and other investments, net of repayments/participations	84,528	(89,428)
Net cash (used in) provided by investing activities	(64,733)	246,899
Financing Activities
Proceeds from mortgages and other loans payable	690,000	104,100
Repayments of mortgages and other loans payable	(744,873)	(20,925)
Proceeds from revolving credit facility and senior unsecured notes	725,079	250,000
Repayments of revolving credit facility and senior unsecured notes	(962,395)	(792,543)
Proceeds from stock options exercised and DRIP issuance	7,097	13,989
Net proceeds from sale of common stock	419,463
Net proceeds from sale of preferred stock		122,019
Purchase of treasury stock	(4,197)
Distributions to noncontrolling interests in other partnerships	(133,712)	(6,814)
Redemption of noncontrolling interest in operating partnership		(11,096)
Distributions to noncontrolling interests in operating partnership	(382)	(262)
Dividends paid on common and preferred stock	(31,662)	(28,223)
Deferred loan costs and capitalized lease obligation	(19,134)	(33,936)
Net cash used in financing activities	(54,716)	(403,691)
Net increase (decrease) in cash and cash equivalents	57,399	(4,138)
Cash and cash equivalents at beginning of period	332,830	343,715
Cash and cash equivalents at end of period	$ 390,229	$ 339,577