Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Revenues from rental properties, net		$ 279,181	$ 278,699	$ 850,525	$ 867,799
Management and other fee income		3,690	4,381	12,229	12,762
Revenues		282,871	283,080	862,754	880,561
Operating expenses
Rent		(2,836)	(2,702)	(8,452)	(8,262)
Real estate taxes		(37,519)	(37,862)	(113,871)	(115,570)
Operating and maintenance		(39,758)	(39,265)	(123,871)	(123,921)
General and administrative		(23,832)	(21,348)	(72,296)	(67,775)
Provision for doubtful accounts		0	(1,389)	0	(4,571)
Impairment charges		19,609	3,336	41,235	33,855
Depreciation and amortization		(68,874)	(74,972)	(209,440)	(236,114)
Total operating expenses		(192,428)	(180,874)	(569,165)	(590,068)
Gain on sale of properties/change in control of interests		9,025	28,250	47,382	180,461
Operating income		99,468	130,456	340,971	470,954
Other income/(expense)
Other income, net		4,327	5,219	8,887	14,675
Interest expense		(43,146)	(44,081)	(131,638)	(140,458)
Early extinguishment of debt charges		0	(12,762)	0	(12,762)
Income before income taxes, net, equity in income of joint ventures, net, and equity in income from other real estate investments, net		60,649	78,832	218,220	332,409
Benefit for income taxes, net		3,866	315	3,580	983
Net income		85,453	100,725	303,518	410,516
Net income attributable to noncontrolling interests		(1,463)	(567)	(2,332)	(882)
Net income attributable to the Company		83,990	100,158	301,186	409,634
Preferred stock redemption charges		(11,369)	0	(11,369)	0
Preferred dividends		(13,573)	(14,534)	(42,641)	(43,657)
Net income available to the Company's common shareholders		$ 59,048	$ 85,624	$ 247,176	$ 365,977
Per common share:
-Basic (in dollars per share)		$ 0.14	$ 0.19	$ 0.58	$ 0.86
-Diluted (in dollars per share)		$ 0.14	$ 0.19	$ 0.58	$ 0.85
Weighted average shares:
-Basic (in shares)		419,823	419,230	419,663	421,106
-Diluted (in shares)	[1]	421,002	419,764	420,986	422,443
Joint Ventures [Member]
Other income/(expense)
Equity in income		$ 17,673	$ 16,533	$ 58,960	$ 52,486
Other Real Estate Investments [Member]
Other income/(expense)
Equity in income		$ 3,265	$ 5,045	$ 22,758	$ 24,638

[1] The effect of the assumed conversion of certain convertible units had an anti-dilutive effect upon the calculation of Net income available to the Company's common shareholders per share. Accordingly, the impact of such conversions has not been included in the determination of diluted earnings per share calculations. Additionally, there were 0.5 million and 2.3 million stock options that were not dilutive as of September 30, 2019 and 2018, respectively.