Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	AOCI	Accumulated Deficit	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2017		169,565,000
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock (in shares)	339,000	342,000
Exercise of stock options (in shares)	32,000	14,000
Ending balance (in shares) at Jun. 30, 2018		169,921,000
Beginning balance at Dec. 31, 2017	$ 3,902,049	$ 1,696	$ 3,272,539	$ 43,099	$ (879,810)	$ 1,464,525
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock		3	5,477			(5,480)
Net income	69,664				59,890	9,774
Cash flow hedge fair value adjustments	63,363			44,176		18,976
Cash flow hedge fair value adjustments	63,152
Repurchase of OP Units with cash	(108)		(59)			(49)
Taxes paid on exercise of stock options	(314)		(314)
Dividends	(84,954)				(84,954)
Distributions	(26,115)					(26,115)
Stock-based compensation	6,912					6,912
Ending balance at Jun. 30, 2018	3,930,286	$ 1,699	3,277,643	87,486	(905,085)	1,468,543
Beginning balance (in shares) at Mar. 31, 2018		169,901,000
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock (in shares)		20,000
Ending balance (in shares) at Jun. 30, 2018		169,921,000
Beginning balance at Mar. 31, 2018	3,926,467	$ 1,699	3,277,421	74,021	(894,289)	1,467,615
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock			281			(281)
Net income	37,033				31,684	5,349
Cash flow hedge fair value adjustments	18,994			13,465		5,529
Cash flow hedge fair value adjustments	18,994
Repurchase of OP Units with cash	(108)		(59)			(49)
Dividends	(42,480)				(42,480)
Distributions	(13,029)					(13,029)
Stock-based compensation	3,409					3,409
Ending balance at Jun. 30, 2018	$ 3,930,286	$ 1,699	3,277,643	87,486	(905,085)	1,468,543
Beginning balance (in shares) at Dec. 31, 2018	170,214,809	170,215,000
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock (in shares)	75,000	76,000
Issuance of common stock (in shares)	4,900,000	4,932,000
Ending balance (in shares) at Jun. 30, 2019	175,222,968	175,223,000
Beginning balance at Dec. 31, 2018	$ 3,848,430	$ 1,702	3,282,316	53,944	(935,630)	1,446,098
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock		1	1,222			(1,223)
Net income	72,648				62,667	9,981
Cash flow hedge fair value adjustments	(114,921)			(79,797)		(35,124)
Issuance of common stock, net	200,982	49	200,933
Repurchase of OP Units with cash	(507)		(291)			(216)
Contributions	176,000					176,000
Dividends	(89,820)				(89,820)
Distributions	(43,974)					(43,974)
Stock-based compensation	6,021					6,021
Ending balance at Jun. 30, 2019	$ 4,052,360	$ 1,752	3,484,180	(25,853)	(964,927)	1,557,208
Beginning balance (in shares) at Mar. 31, 2019		170,237,000
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock (in shares)		54,000
Issuance of common stock (in shares)		4,932,000
Ending balance (in shares) at Jun. 30, 2019	175,222,968	175,223,000
Beginning balance at Mar. 31, 2019	$ 3,788,182	$ 1,702	3,282,388	30,943	(953,335)	1,426,484
Stockholders' Equity [Roll Forward]
Exchange of OP units for common stock		1	859			(860)
Net income	39,860				33,966	5,894
Cash flow hedge fair value adjustments	(81,613)			(56,796)		(24,817)
Issuance of common stock, net	200,982	49	200,933
Contributions	176,000					176,000
Dividends	(45,558)				(45,558)
Distributions	(28,214)					(28,214)
Stock-based compensation	2,721					2,721
Ending balance at Jun. 30, 2019	$ 4,052,360	$ 1,752	$ 3,484,180	$ (25,853)	$ (964,927)	$ 1,557,208