Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Numerator for net income per share - basic and diluted
Income from continuing operations	$ (153,352)	$ (13,426)
Income (Loss) Attributable to Noncontrolling Interest	6,345	752
Partially Owned Properties	(25)	(450)
Preferred distributions	(1,036)	(3,466)
Income (Loss) from Continuing Operations Attributable to Parent	(148,068)	(16,590)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	1,164,718	158,423
Numerator for net income per share - basic and diluted	1,016,650	141,833
Weighted Average Number of Shares Outstanding, Basic	337,532	298,805
Discontinued operations, net	1,214,386	165,593
Net income per share - basic:
Income (Loss) from Continuing Operations, Per Basic Share	$ (0.439)	$ (0.055)
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	$ 3.451	$ 0.530
Net income available to Common Shares	$ 3.012	$ 0.475
Net income per share - diluted:
Income (loss) from continuing operations available to Common Shares	$ (0.439)	$ (0.055)
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	$ 3.451	$ 0.530
Net income available to Common Shares	$ 3.012	$ 0.475
OPERATING PARTNERSHIP
Numerator for net income per share - basic and diluted
Income from continuing operations	(153,352)	(13,426)
Partially Owned Properties	(25)	(450)
Dividend preference units	(1,036)	(3,466)
Income Loss From Continuing Operations Available To Units	(154,413)	(17,342)
Discontinued operations, net	1,214,386	165,593
Net Income loss available to Op unitholders basic diluted numerator	$ 1,059,973	$ 148,251
Weighted Average Limited Partnership and General Partnership Units Outstanding, Basic	351,255	312,011
Net income per share - basic:
Income (Loss) from Continuing Operations, Per Basic Share	$ (0.440)	$ (0.060)
Net income available to Common Shares	$ 3.012	$ 0.470
Income Losses From Continuing Operations Per Outstanding Limited Partnership And General Partnership Unit Basic	$ (0.439)	$ (0.055)
Income (Loss) from Discontinued Operations, Net of Tax, Per Outstanding Limited Partnership and General Partnership Unit, Basic	$ 3.451	$ 0.530
Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic	$ 3.012	$ 0.475
Net income per share - diluted:
Income (loss) from continuing operations available to Common Shares	$ (0.440)	$ (0.060)
Net income available to Common Shares	$ 3.010	$ 0.470
Income Loss From Continuing Operations Per Outstanding Limited Partnership And General Partnership Units Diluted	$ (0.439)	$ (0.055)
Income Loss From Discontinued Operations Net Of Tax Per Outstanding Limited Partnership And General Partnership nit Diluted	$ 3.451	$ 0.530
Net Income Loss Per Outstanding Limited Partnership And General Partnership Units Diluted	$ 3.012	$ 0.475