Consolidated Statements Of Equity - USD ($) $ in Thousands	Total	Common Shares Of Beneficial Interest	Additional Paid-In Capital	Distributions In Excess Of Net Income	Treasury Shares, At Cost	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Equity, Beginning Balance at Dec. 31, 2019	$ 3,701,724	$ 1,069	$ 4,566,731	$ (584,167)	$ (348,419)	$ (6,529)	$ 73,039
Net Income	128,579			123,911			4,668
Other comprehensive income	1,146					1,146
Proceeds from issuance of common shares	0
Net share awards	20,181		13,986		6,195
Employee share purchase plan	2,159		1,347		812
Cash distributions declared to equity holders	(336,626)			(330,823)			(5,803)
Other	(576)		(354)				(222)
Equity, Ending Balance at Dec. 31, 2020	3,516,587	1,069	4,581,710	(791,079)	(341,412)	(5,383)	71,682
Net Income	312,376			303,907			8,469
Other comprehensive income	1,644					1,644
Proceeds from issuance of common shares	759,209	54	759,155
Net share awards	20,160		13,800		6,360
Employee share purchase plan	4,230		3,152		1,078
Conversions and redemptions of operating partnership units	0	1	5,935				(5,936)
Cash distributions declared to equity holders	(347,731)			(342,281)			(5,450)
Other	(220)	2	(222)
Equity, Ending Balance at Dec. 31, 2021	4,266,255	1,126	5,363,530	(829,453)	(333,974)	(3,739)	68,765
Net Income	661,508			653,613			7,895
Other comprehensive income	1,965					1,965
Proceeds from issuance of common shares	516,758	30	516,728
Net share awards	20,762		15,999		4,763
Employee share purchase plan	1,850		1,296		554
Conversions and redemptions of operating partnership units	0		320				(320)
Cash distributions declared to equity holders	(411,731)			(405,692)			(6,039)
Other	(446)		(419)		27
Equity, Ending Balance at Dec. 31, 2022	$ 5,056,921	$ 1,156	$ 5,897,454	$ (581,532)	$ (328,684)	$ (1,774)	$ 70,301