CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUES
Rental income	$ 553,092	$ 490,944	$ 1,602,635	$ 1,417,136
Fee and asset management	3,052	2,928	7,328	6,682
Total revenues	556,144	493,872	1,609,963	1,423,818
EXPENSES
Property and maintenance	110,679	101,712	325,071	300,362
Real estate taxes and insurance	64,235	57,109	182,222	162,430
Property management	18,493	19,175	62,769	62,191
Fee and asset management	1,108	1,250	3,595	3,207
Depreciation	167,406	159,691	509,338	467,416
General and administrative	10,096	10,121	37,178	32,462
Total expenses	372,017	349,058	1,120,173	1,028,068
Operating income	184,127	144,814	489,790	395,750
Interest and other income	70,087	5,313	70,516	6,598
Other expenses	(4,094)	(2,528)	(20,678)	(9,318)
Interest:
Expense incurred, net	(113,876)	(112,449)	(347,452)	(350,957)
Amortization of deferred financing costs	(3,338)	(4,650)	(10,319)	(11,900)
Income before income and other taxes, net gain on sales of land parcels and discontinued operations	132,906	30,500	181,857	30,173
Income and other tax (expense) benefit	(222)	(283)	(627)	(669)
(Loss) from investments in unconsolidated entities	(3)	0	(3)	0
Net gain on sales of land parcels	0	0	0	4,217
Income from continuing operations	132,681	30,217	181,227	33,721
Discontinued operations, net	103,642	82,760	315,578	794,075
Net income	236,323	112,977	496,805	827,796
Net (income) attributable to Noncontrolling Interests:
Operating Partnership	(10,496)	(4,742)	(21,646)	(36,275)
Partially Owned Properties	312	(387)	(457)	(418)
Net income attributable to controlling interests	226,139	107,848	474,702	791,103
Preferred distributions	(2,386)	(3,466)	(9,319)	(10,399)
Redemption Premium	(5,150)	0	(5,150)	0
Net income available to Common Shares	$ 218,603	$ 104,382	$ 460,233	$ 780,704
Earnings per share - basic:
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.397	$ 0.085	$ 0.529	$ 0.074
Net income available to Common Shares	$ 0.725	$ 0.353	$ 1.534	$ 2.651
Weighted average Common Shares outstanding	301,336	295,831	300,116	294,474
Earnings per share - diluted:
Income (loss) from continuing operations available to Common Shares	$ 0.394	$ 0.084	$ 0.524	$ 0.073
Net income available to Common Shares	$ 0.719	$ 0.349	$ 1.519	$ 2.619
Weighted average Common Shares outstanding	318,773	312,844	317,265	311,908
Distributions declared per Common Share outstanding	$ 0.3375	$ 0.3375	$ 1.0125	$ 1.0125