Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Rental income	$ 343,369	$ 367,141
Resident fees and services	735,934	670,337
Interest income	14,648	20,748
Other income	3,014	4,072
Total revenues	1,096,965	1,062,298
Expenses:
Interest expense	122,775	118,597
Property operating expenses	556,465	510,169
Depreciation and amortization	228,201	228,276
General and administrative	33,705	31,101
Loss (gain) on derivatives and financial instruments, net	(7,173)	1,224
Loss (gain) on extinguishment of debt, net	11,707	31,356
Impairment of Asset	28,185	11,031
Other expenses	3,712	11,675
Total expenses	977,577	943,429
Income (loss) from continuing operations before income taxes and income from unconsolidated entities, total	119,388	118,869
Income tax expense	(1,588)	(2,245)
(Loss) income from unconsolidated entities	(2,429)	(23,106)
Income from continuing operations	115,371	93,518
Gain (loss) on real estate dispositions, net	338,184	244,092
Net income	453,555	337,610
Less: Preferred stock dividends	11,676	14,379
Preferred stock redemption charge	0	9,769
Less: Net income (loss) attributable to noncontrolling interests	4,208	823
Net income (loss) attributable to common stockholders	$ 437,671	$ 312,639
Average number of common shares outstanding:
Basic	371,426	362,534
Diluted	373,257	364,652
Basic:
Income (loss) from continuing operations attributable to common stockholders, including real estate dispositions	$ 0.31	$ 0.26
Net income (loss) attributable to common stockholders, total	1.18	0.86
Diluted:
Income (loss) from continuing operations attributable to common stockholders, including real estate dispositions	0.31	0.26
Net income (loss) attributable to common stockholders, total	1.17	0.86
Dividends declared and paid per common share	$ 0.87	$ 0.87