Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total revenues		$ 1,125,912	$ 1,058,602	$ 2,222,877	$ 2,120,900
Expenses:
Interest expense		121,416	116,231	244,191	234,827
Property operating expenses		568,751	501,855	1,125,216	1,012,024
Depreciation and amortization		236,275	224,847	464,476	453,124
General and administrative		32,831	32,632	66,536	63,733
Loss (gain) on derivatives and financial instruments, net		(7,460)	736	(14,633)	1,960
Loss (gain) on extinguishment of debt, net		299	5,515	12,006	36,870
Impairment of assets		4,632	13,631	32,817	24,662
Other expenses		10,058	6,339	13,770	18,014
Total expenses		966,802	901,786	1,944,379	1,845,214
Income (loss) from continuing operations before income taxes and income from unconsolidated entities, total		159,110	156,816	278,498	275,686
Income tax (expense) benefit		(3,841)	8,448	(5,429)	6,203
Income (loss) from unconsolidated entities		1,249	(3,978)	(1,180)	(27,084)
Income from continuing operations		156,518	161,286	271,889	254,805
Gain (loss) on real estate dispositions, net		10,755	42,155	348,939	286,247
Net income		167,273	203,441	620,828	541,052
Less: Preferred stock dividends		11,676	11,680	23,352	26,059
Less: Preferred stock redemption charge		0	0	0	9,769
Less: Net income (loss) attributable to noncontrolling interests	[1]	1,165	3,332	5,373	4,156
Net income (loss) attributable to common stockholders		$ 154,432	$ 188,429	$ 592,103	$ 501,068
Average number of common shares outstanding:
Basic (in shares)		371,640,000	366,524,000	371,552,000	364,551,000
Diluted (in shares)		373,075,000	368,149,000	373,186,000	366,423,000
Basic:
Income (loss) from continuing operations attributable to common stockholders, including real estate dispositions (in USD per share)		$ 0.42	$ 0.44	$ 0.73	$ 0.70
Net income (loss) attributable to common stockholders, total (in USD per share)		0.42	0.51	1.59	1.37
Diluted:
Income (loss) from continuing operations attributable to common stockholders, including real estate dispositions (in USD per share)		0.42	0.44	0.73	0.70
Net income (loss) attributable to common stockholders, total (in USD per share)		0.41	0.51	1.59	1.37
Dividends declared and paid per common share (in USD per share)		$ 0.87	$ 0.87	$ 1.74	$ 1.74
Rental income
Revenues:
Total revenues		$ 333,601	$ 355,599	$ 676,970	$ 722,741
Resident fees and services
Revenues:
Total revenues		763,345	677,040	1,499,279	1,347,377
Interest income
Revenues:
Total revenues		13,462	20,901	28,110	41,649
Other income
Revenues:
Total revenues		$ 15,504	$ 5,062	$ 18,518	$ 9,133

[1] Includes amounts attributable to redeemable noncontrolling interests.