CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total stockholders' equity	Preferred stock	Common stock	Preferred stock and paid in capital	Common stock and paid in capital	Distributions in excess of net income	Accumulated other comprehensive loss	Noncontrolling interests
Balance at Dec. 31, 2015	$ 6,553,333	$ 6,531,596			$ 395,378	$ 7,666,428	$ (1,530,210)	$ 0	$ 21,737
Balance (in shares) at Dec. 31, 2015			16,350,000,000	250,416,757,000
Increase (Decrease) in Stockholders' Equity
Net income	316,477	315,571					315,571		906
Distributions paid and payable	(655,211)	(642,529)					(642,529)		(12,682)
Share issuances, net of costs	557,636	557,636				557,636
Share issuances, net of costs (in shares)				9,449,167,000
Contributions by noncontrolling interests	15,906								15,906
Redemption of common units	(9,026)	(2,865)				(2,865)			(6,161)
Redemption of common units (in shares)				103,182,000
Reallocation of equity	0	(543)				(543)			543
Share-based compensation, net	7,938	7,938				7,938
Share-based compensation, net (in shares)				199,153,000
Balance at Dec. 31, 2016	6,787,053	6,766,804			395,378	8,228,594	(1,857,168)	0	20,249
Balance (in shares) at Dec. 31, 2016			16,350,000,000	260,168,259,000
Increase (Decrease) in Stockholders' Equity
Net income	319,318	318,798					318,798		520
Distributions paid and payable	(703,067)	(701,020)					(701,020)		(2,047)
Share issuances, net of costs	1,388,080	1,388,080				1,388,080
Share issuances, net of costs (in shares)				23,957,741,000
Contributions by noncontrolling interests	0
Preferred shares redeemed	(408,751)	(408,751)			(395,378)		(13,373)
Preferred shares redeemed (in shares)			(16,350,000,000)
Reallocation of equity	0	(485)				(485)			485
Share-based compensation, net	8,075	8,075				8,075
Share-based compensation, net (in shares)				87,685,000
Balance at Dec. 31, 2017	7,390,708	7,371,501			0	9,624,264	(2,252,763)	0	19,207
Balance (in shares) at Dec. 31, 2017			0	284,213,685,000
Increase (Decrease) in Stockholders' Equity
Net income	364,598	363,614					363,614		984
Other comprehensive loss	(8,098)	(8,098)						(8,098)
Distributions paid and payable	(770,502)	(768,506)					(768,506)		(1,996)
Share issuances, net of costs	1,119,297	1,119,297				1,119,297
Share issuances, net of costs (in shares)				19,304,878,000
Contributions by noncontrolling interests	18,848								18,848
Redemption of common units	(2,752)	2,829				2,829			(5,581)
Redemption of common units (in shares)				88,182,000
Reallocation of equity	0	(774)				(774)			774
Share-based compensation, net	8,879	8,879				8,879
Share-based compensation, net (in shares)				135,345,000
Balance at Dec. 31, 2018	$ 8,120,978	$ 8,088,742			$ 0	$ 10,754,495	$ (2,657,655)	$ (8,098)	$ 32,236
Balance (in shares) at Dec. 31, 2018			0	303,742,090,000