Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Rental income	$ 355,599	$ 422,628	$ 722,741	$ 838,290
Resident fees and services	677,040	615,220	1,347,377	1,217,369
Interest income	20,901	24,007	41,649	49,195
Other income	5,062	14,802	9,133	18,851
Total revenues	1,058,602	1,076,657	2,120,900	2,123,705
Expenses:
Interest expense	116,231	132,326	234,827	265,285
Property operating expenses	501,855	458,832	1,012,024	908,468
Depreciation and amortization	224,847	226,569	453,124	455,265
General and administrative	32,632	39,914	63,733	85,606
Transaction costs	0	5,157	0	13,365
Loss (gain) on derivatives, net	736	0	1,960	0
Loss (gain) on extinguishment of debt, net	5,515	33	36,870	9
Impairment of Asset	13,631	0	24,662	14,314
Other expenses	6,339	3,161	18,014	3,161
Total expenses	901,786	865,992	1,845,214	1,745,473
Income (loss) from continuing operations before income taxes and income from unconsolidated entities, total	156,816	210,665	275,686	378,232
Income tax expense	8,448	513	6,203	2,239
(Loss) income from unconsolidated entities	(3,978)	(1,959)	(27,084)	(5,778)
Income from continuing operations	161,286	209,219	254,805	374,693
Gain (loss) on real estate dispositions, net	42,155	1,530	286,247	1,530
Net income	203,441	210,749	541,052	376,223
Less: Preferred stock dividends	11,680	16,352	26,059	32,703
Preferred stock redemption charge	0	0	9,769	0
Less: Net income (loss) attributable to noncontrolling interests	3,332	(1,077)	4,156	(924)
Net income (loss) attributable to common stockholders	$ 188,429	$ 195,474	$ 501,068	$ 344,444
Average number of common shares outstanding:
Basic	366,524	356,646	364,551	355,879
Diluted	368,149	358,891	366,423	357,489
Basic:
Income (loss) from continuing operations attributable to common stockholders, including real estate dispositions	$ 0.51	$ 0.55	$ 1.37	$ 0.97
Net income (loss) attributable to common stockholders, total	0.51	0.55	1.37	0.97
Diluted:
Income (loss) from continuing operations attributable to common stockholders, including real estate dispositions	0.51	0.54	1.37	0.96
Net income (loss) attributable to common stockholders, total	0.51	0.54	1.37	0.96
Dividends declared and paid per common share	$ 0.87	$ 0.86	$ 1.74	$ 1.72