Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 75,944	$ 93,440
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	131,399	140,178
Net amortization of deferred finance costs and debt premiums	3,787	6,088
Net amortization of intangible lease assets and liabilities	(147)	(527)
Gain on sales of real estate assets	(3,130)	(712)
Gain on sale of discontinued operations	(895)	(152)
Write-off of development projects	(123)	51
Share-based compensation expense	1,739	1,502
Net realized (gain) loss on sale of available-for-sale securities	(160)	22
Write down of mortgage and other notes receivable	0	1,500
Loss on impairment of real estate from discontinued operations	293	6,696
Gain on extinguishment of debt	0	(581)
Gain on extinguishment of debt from discontinued operations	0	(31,434)
Equity in earnings of unconsolidated affiliates	(3,339)	(3,233)
Distributions of earnings from unconsolidated affiliates	7,314	3,922
Provision for doubtful accounts	1,331	1,542
Change in deferred tax accounts	2,316	(4,926)
Changes in:
Tenant and other receivables	5,745	3,438
Other assets	2,923	758
Accounts payable and accrued liabilities	(5,207)	(19,977)
Net cash provided by operating activities	219,790	197,595
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to real estate assets	(88,890)	(79,282)
Acquisition of real estate assets	(61,419)	0
Additions to restricted cash	(1,270)	(10,203)
Proceeds from sales of real estate assets	38,161	10,854
Additions to mortgage and other notes receivable	2,965	0
Payments received on mortgage and other notes receivable	2,160	2,708
Additional investments in and advances to unconsolidated affiliates	(3,969)	(19,626)
Distributions in excess of equity in earnings of unconsolidated affiliates	7,316	9,283
Changes in other assets	2,066	(7,664)
Net cash used in investing activities	(108,810)	(93,930)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from mortgage and other indebtedness	1,136,081	1,074,808
Principal payments on mortgage and other indebtedness	(1,108,292)	(1,057,087)
Additions to deferred financing costs	(2,688)	(5,980)
Proceeds from issuances of common stock	87	93
Proceeds from exercises of stock options	4,434	1,954
Purchase of noncontrolling interest in the Operating Partnership	(9,836)	0
Contributions from noncontrolling interests	4,042	40
Distributions to noncontrolling interests	(34,323)	(38,579)
Dividends paid to holders of preferred stock	(21,188)	(21,188)
Dividends paid to common shareholders	(63,852)	(60,731)
Net cash used in financing activities	(95,535)	(106,670)
NET CHANGE IN CASH AND CASH EQUIVALENTS	15,445	(3,005)
CASH AND CASH EQUIVALENTS, beginning of period	56,092	50,896
CASH AND CASH EQUIVALENTS, end of period	71,537	47,891
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	$ 115,507	$ 134,081