Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Additional Paid-In Capital	Treasury Stock	Distributions in Excess of Cumulative Net Income	Distributions in Excess of Cumulative Net Income Cumulative Effect, Period of Adoption, Adjustment	Stockholders’ Investment	Stockholders’ Investment Cumulative Effect, Period of Adoption, Adjustment	Nonredeemable Noncontrolling Interests
Beginning balance at Dec. 31, 2017	$ 2,825,111	$ 22,329	$ 1,717	$ 107,587	$ 3,932,689	$ (148,373)	$ (1,121,647)	$ 22,329	$ 2,771,973	$ 22,329	$ 53,138
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	80,765						79,164		79,164		1,601
Common stock issuance pursuant to stock based compensation	(567)			99	(566)	(100)			(567)
Amortization of stock options, restricted stock, and equity-classified restricted stock units, net of forfeitures	2,257			(5)	2,262				2,257
Contributions from nonredeemable noncontrolling interests	3,205										3,205
Distributions to nonredeemable noncontrolling interests	(2,653)										(2,653)
Common dividends	(109,291)						(109,291)		(109,291)
Ending balance at Dec. 31, 2018	$ 2,821,156		1,717	107,681	3,934,385	(148,473)	(1,129,445)		2,765,865		55,291
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common dividends per share (in usd per share)	$ 1.04
Net income	$ 152,683						150,418		150,418		2,265
Common stock issued in merger	1,598,189			41,576	1,556,613				1,598,189
Common stock issuance pursuant to stock based compensation	507			91	416				507
Amortization of stock options, restricted stock, and equity-classified restricted stock units, net of forfeitures	2,468			(1)	2,469				2,468
Nonredeemable noncontrolling interests acquired in merger	5,329										5,329
Contributions from nonredeemable noncontrolling interests	8,087										8,087
Distributions to nonredeemable noncontrolling interests	(2,411)										(2,411)
Common dividends	(158,173)						(158,173)		(158,173)
Ending balance at Dec. 31, 2019	$ 4,427,835		1,717	149,347	5,493,883	(148,473)	(1,137,200)		4,359,274		68,561
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common dividends per share (in usd per share)	$ 1.16
Net income	$ 238,114						237,278		237,278		836
Common stock issuance pursuant to stock based compensation	(307)			90	(397)				(307)
Common stock issued pursuant to unitholder redemption	0		(1,717)	1,719	45,032				45,034		(45,034)
Amortization of stock options, restricted stock, and equity-classified restricted stock units, net of forfeitures	4,237			(7)	4,244				4,237
Contributions from nonredeemable noncontrolling interests	5,197										5,197
Distributions to nonredeemable noncontrolling interests	(1,156)										(1,156)
Common dividends	(178,382)						(178,382)		(178,382)
Ending balance at Dec. 31, 2020	$ 4,495,538		$ 0	$ 151,149	$ 5,542,762	$ (148,473)	$ (1,078,304)		$ 4,467,134		$ 28,404
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common dividends per share (in usd per share)	$ 1.20