Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Cash Flows from Operating Activities:
Net Income	$ 148,995		$ 55,399
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	78,607		73,359
Amortization of deferred financing costs, net	(8,747)		316
Impairment loss	457		15,074
Equity in (earnings) losses of real estate joint ventures and partnerships, net	(9,342)		11,620
Gain on sale of real estate joint venture and partnership interests	(11,592)		(5,562)
Gain on sale of property	(78,419)		(35,422)
Distributions of income from real estate joint ventures and partnerships, net	1,723		1,562
Changes in accrued rent and accounts receivable, net	6,266		10,064
Changes in other assets, net	(12,844)		(15,193)
Changes in accounts payable, accrued expenses and other liabilities, net	(7,710)		(9,458)
Other, net	3,911		7,686
Net cash provided by operating activities	111,305		109,445
Cash Flows from Investing Activities:
Acquisition of real estate and land	(54,753)		(116,960)
Development and capital improvements	(30,644)		(45,585)
Proceeds from sale of property and real estate equity investments, net	155,862		419,370
Change in restricted deposits and mortgage escrows	34,606		(22,010)
Notes receivable from real estate joint ventures and partnerships and other receivables:
Advances	(289)		(4,865)
Collections	6,282		73,563
Real estate joint ventures and partnerships:
Investments	(17,698)		(7,129)
Distributions of capital	19,201		7,568
Other, net	(899)		0
Net cash provided by investing activities	111,668		303,952
Cash Flows from Financing Activities:
Proceeds from issuance of debt	300,584		0
Principal payments of debt	(199,672)		(384,116)
Changes in unsecured credit facilities	38,500		62,500
Proceeds from issuance of common shares of beneficial interest, net	5,569		3,212
Repurchase of preferred shares of beneficial interest	(275,000)		0
Common and preferred dividends paid	(86,639)		(86,704)
Debt issuance costs paid	(4,693)		(1,685)
Distributions to noncontrolling interests	(8,241)		(7,333)
Contributions from noncontrolling interests	10,182		2,123
Other, net	207		61
Net cash used in financing activities	(219,203)		(411,942)
Net increase in cash and cash equivalents	3,770		1,455
Cash and cash equivalents at January 1	19,604	[1]	13,642
Cash and cash equivalents at June 30	23,374	[1]	15,097
Interest paid during the period (net of amount capitalized of $1,104 and $1,594 respectively)	52,508		61,959
Income taxes paid during the period	$ 1,860		$ 1,548

[1] Consolidated Variable Interest Entities’ Assets and Liabilities included in the above balances (See Note 17):