Supplemental Disclosure of Non-Cash Investing and Financing Activities (Tables)

12 Months Ended

Dec. 31, 2011

Supplemental Disclosure of Non-Cash Investing and Financing Activities

Summary of non-cash investing and financing activities

	Years ended December 31,
	2011		2010
Issuance of common stock as deferred compensation	$	699	$	537
Issuance of units in the operating partnership		62,443
Redemption of units in the operating partnership		865		12,091
Derivative instruments at fair value		1,870		15,299
Assignment of debt investment to joint venture		286,571		—
Mortgage assigned to joint venture		30,000		—
Tenant improvements and capital expenditures payable		3,990		1,981
Debt and preferred equity and other investments acquired		—		30,000
Other non-cash adjustments-investing		—		302,187
Fair value adjustment to noncontrolling interest in operating partnership		39,040		18,948
Accrued acquisition liabilities		34,500		—
Assumption of mortgage loans		943,767		803,921
Consolidation of real estate investments and other adjustments		1,156,929		—
Consolidation of real estate investments—noncontrolling interest in other partnerships		87,264		—
Deconsolidation of real estate investments—assets		—		60,783
Deconsolidation of real estate investments—liabilities		—		47,533