CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total stockholders’ equity	Shares of common stock	Common stock and paid in capital	Distributions in excess of net income	Accumulated other comprehensive loss	Noncontrolling interests
Balance at Dec. 31, 2017	$ 7,390,708	$ 7,371,501		$ 9,624,264	$ (2,252,763)	$ 0	$ 19,207
Balance (in shares) at Dec. 31, 2017			284,213,685
Increase (Decrease) in Stockholders' Equity
Net income	279,295	278,542			278,542		753
Distributions paid and payable	(571,088)	(569,631)			(569,631)		(1,457)
Share issuances, net of costs	587,566	587,566		587,566
Share issuances, net of costs (in shares)			10,761,688
Issuance of common partnership units and contributions by noncontrolling interests	18,848						18,848
Redemption of common units	0	2,829		2,829			(2,829)
Redemption of common units (in shares)			88,182
Reallocation of equity	0	(492)		(492)			492
Share-based compensation, net	5,925	5,925		5,925
Share-based compensation, net (in shares)			81,977
Balance at Sep. 30, 2018	7,711,254	7,676,240		10,220,092	(2,543,852)	0	35,014
Balance (in shares) at Sep. 30, 2018			295,145,532
Balance at Jun. 30, 2018	7,512,469	7,475,750		9,925,543	(2,449,793)	0	36,719
Balance (in shares) at Jun. 30, 2018			290,024,275
Increase (Decrease) in Stockholders' Equity
Net income	99,283	98,999			98,999		284
Distributions paid and payable	(193,686)	(193,058)			(193,058)		(628)
Share issuances, net of costs	289,451	289,451		289,451
Share issuances, net of costs (in shares)			5,093,354
Redemption of common units	0	1,361		1,361			(1,361)
Redemption of common units (in shares)			28,182
Share-based compensation, net	3,737	3,737		3,737
Share-based compensation, net (in shares)			(279)
Balance at Sep. 30, 2018	7,711,254	7,676,240		10,220,092	(2,543,852)	0	35,014
Balance (in shares) at Sep. 30, 2018			295,145,532
Balance at Dec. 31, 2018	8,120,978	8,088,742		10,754,495	(2,657,655)	(8,098)	32,236
Balance (in shares) at Dec. 31, 2018			303,742,090
Increase (Decrease) in Stockholders' Equity
Net income	307,925	307,185			307,185		740
Other comprehensive income (loss)	(5,501)	(5,501)				(5,501)
Distributions paid and payable	(637,630)	(636,650)			(636,650)		(980)
Share issuances, net of costs	1,540,930	1,540,930		1,540,930
Share issuances, net of costs (in shares)			22,109,297
Issuance of common partnership units and contributions by noncontrolling interests	6,286						6,286
Redemption of common units	(21,123)	(6,866)		(6,866)			(14,257)
Reallocation of equity	0	(653)		(653)			653
Share-based compensation, net	6,232	6,232		6,232
Share-based compensation, net (in shares)			58,894
Balance at Sep. 30, 2019	9,318,097	9,293,419		12,294,138	(2,987,120)	(13,599)	24,678
Balance (in shares) at Sep. 30, 2019			325,910,281
Balance at Jun. 30, 2019	8,862,594	8,837,502		11,722,036	(2,869,937)	(14,597)	25,092
Balance (in shares) at Jun. 30, 2019			318,218,713
Increase (Decrease) in Stockholders' Equity
Net income	101,275	101,049			101,049		226
Other comprehensive income (loss)	998	998				998
Distributions paid and payable	(218,624)	(218,232)			(218,232)		(392)
Share issuances, net of costs	569,617	569,617		569,617
Share issuances, net of costs (in shares)			7,693,184
Redemption of common units	(898)	3		3			(901)
Reallocation of equity	0	(653)		(653)			653
Share-based compensation, net	3,135	3,135		3,135
Share-based compensation, net (in shares)			(1,616)
Balance at Sep. 30, 2019	$ 9,318,097	$ 9,293,419		$ 12,294,138	$ (2,987,120)	$ (13,599)	$ 24,678
Balance (in shares) at Sep. 30, 2019			325,910,281