CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
REVENUES
Rental income	$ 541,569	$ 478,419	$ 1,063,162	$ 939,121
Fee and asset management	2,212	1,948	4,276	3,754
Total revenues	543,781	480,367	1,067,438	942,875
EXPENSES
Property and maintenance	107,024	98,571	218,004	202,157
Real estate taxes and insurance	63,126	54,803	118,768	106,610
Property management	21,008	20,767	44,417	43,148
Fee and asset management	1,180	1,009	2,487	1,957
Depreciation	172,338	154,452	346,079	311,891
General and administrative	13,394	10,908	27,082	22,341
Total expenses	378,070	340,510	756,837	688,104
Operating income	165,711	139,857	310,601	254,771
Interest and other income	259	277	431	1,288
Other expenses	(9,517)	(4,630)	(16,584)	(6,790)
Interest:
Expense incurred, net	(115,618)	(119,997)	(234,247)	(240,443)
Amortization of deferred financing costs	(4,063)	(4,396)	(7,037)	(7,401)
Income before income and other taxes, net gain on sales of land parcels and discontinued operations	36,772	11,111	53,164	1,425
Income and other tax (expense) benefit	(214)	(202)	(405)	(386)
Net gain on sales of land parcels	0	4,217	0	4,217
Income from continuing operations	36,558	15,126	52,759	5,256
Discontinued operations, net	71,757	566,627	207,723	709,563
Net income	108,315	581,753	260,482	714,819
Net (income) attributable to Noncontrolling Interests:
Operating Partnership	(4,732)	(25,758)	(11,150)	(31,533)
Partially Owned Properties	(319)	(71)	(769)	(31)
Net income attributable to controlling interests	103,264	555,924	248,563	683,255
Preferred distributions	(3,467)	(3,467)	(6,933)	(6,933)
Net income available to Common Shares	$ 99,797	$ 552,457	$ 241,630	$ 676,322
Earnings per share - basic:
Income (loss) from continuing operations available to Common Shares	$ 0.104	$ 0.038	$ 0.144	$ (0.006)
Net income available to Common Shares	$ 0.332	$ 1.875	$ 0.807	$ 2.302
Weighted average Common Shares outstanding	300,193	294,663	299,499	293,784
Earnings per share - diluted:
Income (loss) from continuing operations available to Common Shares	$ 0.103	$ 0.037	$ 0.142	$ (0.006)
Net income available to Common Shares	$ 0.329	$ 1.852	$ 0.799	$ 2.302
Weighted average Common Shares outstanding	317,648	312,199	316,457	293,784
Distributions declared per Common Share outstanding	$ 0.3375	$ 0.3375	$ 0.6750	$ 0.6750