Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011		Dec. 31, 2010
ASSETS
Property	$ 4,659,001		$ 4,777,794
Accumulated Depreciation	(1,030,027)		(971,249)
Property Held for Sale, net	122,360
Property, net	3,751,334	[1]	3,806,545	[1]
Investment in Real Estate Joint Ventures and Partnerships, net	342,672		347,526
Total	4,094,006		4,154,071
Notes Receivable from Real Estate Joint Ventures and Partnerships	149,814		184,788
Unamortized Debt and Lease Costs, net	119,207		116,437
Accrued Rent and Accounts Receivable (net of allowance for doubtful accounts of $10,297 in 2011 and $10,137 in 2010)	84,203	[1]	95,859	[1]
Cash and Cash Equivalents	20,181	[1]	23,859	[1]
Restricted Deposits and Mortgage Escrows	11,018		10,208
Other, net	194,008		222,633
Total Assets	4,672,437		4,807,855
LIABILITIES AND EQUITY
Debt, net	2,605,737	[1]	2,589,448	[1]
Accounts Payable and Accrued Expenses	117,307		126,767
Other, net	106,671		111,383
Total Liabilities	2,829,715		2,827,598
Commitments and Contingencies
Shareholders' Equity:
Common Shares of Beneficial Interest - par value, $.03 per share; shares authorized: 275,000; shares issued and outstanding: 120,840 in 2011 and 120,492 in 2010	3,641		3,630
Accumulated Additional Paid-In Capital	1,982,118		1,969,905
Net Income Less Than Accumulated Dividends	(293,446)		(151,780)
Accumulated Other Comprehensive Loss	(20,714)		(21,774)
Total Shareholders' Equity	1,671,607		1,799,989
Noncontrolling Interests	171,115		180,268
Total Equity	1,842,722		1,980,257
Total Liabilities and Equity	4,672,437		4,807,855
Consolidated Variable Interest Entities' Assets and Liabilities included in the above balances (See Note 3):
Property, net	230,042		233,706
Accrued Rent and Accounts Receivable, net	8,467		9,514
Cash and Cash Equivalents	10,695		10,397
Debt, net	279,998		281,519
6.75% Series D Preferred Shares [Member]
Shareholders' Equity:
Cumulative redeemable preferred shares of beneficial interest, value	3		3
6.95% Series E Preferred Shares [Member]
Shareholders' Equity:
Cumulative redeemable preferred shares of beneficial interest, value	1		1
6.5% Series F Preferred Shares [Member]
Shareholders' Equity:
Cumulative redeemable preferred shares of beneficial interest, value	$ 4		$ 4

[1] Consolidated Variable Interest Entities' Assets and Liabilities included in the above balances (See Note 3):