Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Revenues:
Rental income	$ 311,731,000		$ 277,919,000		$ 909,659,000		$ 789,748,000
Resident fees and services	466,127,000		174,464,000		1,164,446,000		498,295,000
Interest income	7,629,000		8,111,000		24,325,000		24,131,000
Other income	1,443,000		1,339,000		3,168,000		4,505,000
Total revenues	786,930,000		461,833,000		2,101,598,000		1,316,679,000
Expenses:
Interest expense	116,530,000		91,915,000		336,585,000		271,223,000
Property operating expenses	342,730,000		144,417,000		874,960,000		409,236,000
Depreciation and amortization	242,668,000		127,844,000		628,700,000		373,344,000
General and administrative	28,718,000		23,679,000		79,799,000		77,302,000
Transaction costs	23,591,000		8,264,000		117,707,000		42,535,000
Loss (gain) on derivatives, net	4,872,000		409,000		4,465,000		(1,712,000)
Loss (gain) on extinguishment of debt, net	(4,068,000)		215,000		(4,376,000)		791,000
Provision for loan losses	0		27,008,000		0		27,008,000
Total expenses	755,041,000		423,751,000		2,037,840,000		1,199,727,000
Income (loss) from continuing operations before income taxes and income from unconsolidated entities	31,889,000		38,082,000		63,758,000		116,952,000
Income tax (expense) benefit	(3,077,000)		(836,000)		(7,055,000)		(3,754,000)
Income from unconsolidated entities	(331,000)		(739,000)		(3,529,000)		2,250,000
Income (loss) from continuing operations	28,481,000		36,507,000		53,174,000		115,448,000
Discontinued operations:
Gain (loss) on sales of properties, net	4,707,000		12,827,000		57,202,000		46,046,000
Impairment of assets	0		6,952,000		0		6,952,000
Income (loss) from discontinued operations, net	417,000		11,124,000		2,212,000		33,294,000
Discontinued operations, net	5,124,000		16,999,000		59,414,000		72,388,000
Net income	33,605,000		53,506,000		112,588,000		187,836,000
Less: Preferred stock dividends	16,602,000		16,602,000		49,805,000		52,527,000
Less: Preferred stock redemption charge	0		0		0		6,242,000
Less: Net income (loss) attributable to noncontrolling interests	(3,688,000)	[1]	(365,000)	[1]	(4,462,000)	[1]	(2,241,000)	[1]
Net income (loss) attributable to common stockholders	$ 20,691,000		$ 37,269,000		$ 67,245,000		$ 131,308,000
Average number of common shares outstanding:
Basic	286,020,000		224,391,000		273,148,000		212,592,000
Diluted	288,029,000		226,258,000		275,247,000		214,075,000
Basic:
Income (loss ) from continuing operations attributable to common stockholders	$ 0.05		$ 0.09		$ 0.03		$ 0.28
Discontinued operations, net	$ 0.02		$ 0.08		$ 0.22		$ 0.34
Net income (loss) attributable to common stockholders	$ 0.07		$ 0.17		$ 0.25		$ 0.62
Diluted:
Income (loss) from continuing operations attributable to common stockholders	$ 0.05		$ 0.09		$ 0.03		$ 0.28
Discontinued operations, net	$ 0.02		$ 0.08		$ 0.22		$ 0.34
Net income (loss) attributable to common stockholders	$ 0.07		$ 0.16		$ 0.24		$ 0.61
Dividends declared and paid per common share	$ 0.765		$ 0.74		$ 2.295		$ 2.22

[1] (1) Includes amounts attributable to redeemable noncontrolling interests.