Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
Cash Flows from Operating Activities:
Net Income (Loss)	$ 97,446		$ (15,831)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	110,300		118,833
Amortization of deferred financing costs and debt discount	386		5,072
Impairment loss	15,410		72,739
Equity in losses (earnings) of real estate joint ventures and partnerships, net	6,715		(3,942)
Gain on acquisition	(1,869)		(4,559)
Gain on sale of property	(50,583)		(2,174)
Gain on sale of real estate joint venture and partnership interests	(5,562)		0
Distributions of income from real estate joint ventures and partnerships, net	2,160		1,775
Changes in accrued rent and accounts receivable, net	2,095		9,270
Changes in other assets, net	(17,740)		(17,856)
Changes in accounts payable, accrued expenses and other liabilities, net	(7,021)		(18,853)
Other, net	10,472		8,211
Net cash provided by operating activities	162,209		152,685
Cash Flows from Investing Activities:
Acquisition of real estate and land	(196,801)		(48,238)
Development and capital improvements	(68,345)		(66,384)
Proceeds from sale of property and real estate equity investments, net	480,502		52,549
Change in restricted deposits and mortgage escrows	50		(668)
Notes receivable from real estate joint ventures and partnerships and other receivables:
Advances	(6,468)		(2,756)
Collections	74,296		14,980
Real estate joint ventures and partnerships:
Investments	(8,445)		(18,583)
Distributions of capital	31,910		13,714
Proceeds from tax increment revenue bonds	0		16,545
Net cash provided by (used in) investing activities	306,699		(38,841)
Proceeds from issuance of:
Debt	0		215,750
Common shares of beneficial interest, net	4,753		3,935
Principal payments of debt	(412,091)		(317,559)
Changes in unsecured revolving credit facilities	83,500		115,300
Common and preferred dividends paid	(130,105)		(124,277)
Debt issuance costs paid	(1,735)		(3,850)
Distributions to noncontrolling interests	(10,119)		(9,562)
Contributions from noncontrolling interests	2,123		3,717
Other, net	213		(976)
Net cash used in financing activities	(463,461)		(117,522)
Net increase (decrease) in cash and cash equivalents	5,447		(3,678)
Cash and cash equivalents at January 1	13,642	[1]	23,859
Cash and cash equivalents at September 30	19,089	[1]	20,181
Interest paid during the period (net of amount capitalized of $2,394 and $1,485 respectively)	98,024		117,388
Income taxes paid during the period	$ 1,548		$ 1,578

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