Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Distributions in Excess of Net Income [Member]	Total Shareholder's Equity [Member]	Noncontrolling Interest Exchangeable Operating Partnership Units [Member]	Noncontrolling Interests In Limited Partners Interest In Consolidated Partnerships [Member]	Total Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2021	$ 6,109,932	$ 1,712	$ (22,758)	$ 7,883,458	$ (10,227)	$ (1,814,814)	$ 6,037,371	$ 35,447	$ 37,114	$ 72,561
Net income	302,803					300,024	300,024	1,315	1,464	2,779
Other comprehensive income
Other comprehensive income before reclassification	12,427				11,280		11,280	54	1,093	1,147
Amounts reclassified from accumulated other comprehensive income (loss)	1,491				1,335		1,335	7	149	156
Deferred compensation plan, net			(1,124)	1,124
Restricted stock issued, net of amortization	8,574	2		8,572			8,574
Common stock repurchased for taxes withheld for stock based compensation, net	(6,088)			(6,088)			(6,088)
Common stock repurchased and retired	(75,419)	(13)		(75,406)			(75,419)
Common stock issued under dividend reinvestment plan	252			252			252
Common stock issued for partnership units exchanged				1,275			1,275	(1,275)		(1,275)
Common stock issued, net of issuance costs	61,284	10		61,274			61,284
Contributions from partners	10,446								10,446	10,446
Distributions to partners	(3,775)								(3,775)	(3,775)
Cash dividends declared - common stock/unit	(215,792)					(214,855)	(214,855)	(937)		(937)
Ending Balance at Jun. 30, 2022	6,206,135	1,711	(23,882)	7,874,461	2,388	(1,729,645)	6,125,033	34,611	46,491	81,102
Beginning Balance at Mar. 31, 2022	6,205,692	1,714	(23,831)	7,882,764	(1,764)	(1,726,556)	6,132,327	35,876	37,489	73,365
Net income	105,987					104,796	104,796	452	739	1,191
Other comprehensive income
Other comprehensive income before reclassification	4,213				3,743		3,743	17	453	470
Amounts reclassified from accumulated other comprehensive income (loss)	481				409		409	3	69	72
Deferred compensation plan, net			(51)	51
Restricted stock issued, net of amortization	4,366			4,366			4,366
Common stock repurchased for taxes withheld for stock based compensation, net	3			3			3
Common stock repurchased and retired	(75,419)	(13)		(75,406)			(75,419)
Common stock issued under dividend reinvestment plan	134			134			134
Common stock issued for partnership units exchanged				1,275			1,275	(1,275)		(1,275)
Common stock issued, net of issuance costs	61,284	10		61,274			61,284
Contributions from partners	10,446								10,446	10,446
Distributions to partners	(2,705)								(2,705)	(2,705)
Cash dividends declared - common stock/unit	(108,347)					(107,885)	(107,885)	(462)		(462)
Ending Balance at Jun. 30, 2022	6,206,135	1,711	(23,882)	7,874,461	2,388	(1,729,645)	6,125,033	34,611	46,491	81,102
Beginning Balance at Dec. 31, 2022	6,178,039	1,711	(24,461)	7,877,152	7,560	(1,764,977)	6,096,985	34,489	46,565	81,054
Net income	186,660					184,063	184,063	970	1,627	2,597
Other comprehensive income
Other comprehensive income before reclassification	2,798				2,570		2,570	21	207	228
Amounts reclassified from accumulated other comprehensive income (loss)	(3,141)				(2,794)		(2,794)	(15)	(332)	(347)
Deferred compensation plan, net			(215)	215
Restricted stock issued, net of amortization	8,924	2		8,922			8,924
Common stock repurchased for taxes withheld for stock based compensation, net	(7,326)			(7,326)			(7,326)
Common stock repurchased and retired	(20,006)	(3)		(20,003)			(20,006)
Common stock issued under dividend reinvestment plan	299			299			299
Common stock issued, net of issuance costs	(10)			(10)			(10)
Contributions from partners	3,205								3,205	3,205
Issuance of exchangeable operating partnership units	20,000							20,000		20,000
Distributions to partners	(1,980)								(1,980)	(1,980)
Cash dividends declared - common stock/unit	(223,676)					(222,492)	(222,492)	(1,184)		(1,184)
Ending Balance at Jun. 30, 2023	6,143,786	1,710	(24,676)	7,859,249	7,336	(1,803,406)	6,040,213	54,281	49,292	103,573
Beginning Balance at Mar. 31, 2023	6,139,435	1,710	(25,699)	7,856,426	3,927	(1,779,043)	6,057,321	34,411	47,703	82,114
Net income	88,172					86,782	86,782	550	840	1,390
Other comprehensive income
Other comprehensive income before reclassification	5,342				4,886		4,886	32	424	456
Amounts reclassified from accumulated other comprehensive income (loss)	(1,649)				(1,477)		(1,477)	(10)	(162)	(172)
Deferred compensation plan, net			1,023	(1,023)
Restricted stock issued, net of amortization	4,105			4,105			4,105
Common stock repurchased for taxes withheld for stock based compensation, net	(406)			(406)			(406)
Common stock issued under dividend reinvestment plan	157			157			157
Common stock issued, net of issuance costs	(10)			(10)			(10)
Contributions from partners	1,428								1,428	1,428
Issuance of exchangeable operating partnership units	20,000							20,000		20,000
Distributions to partners	(941)								(941)	(941)
Cash dividends declared - common stock/unit	(111,847)					(111,145)	(111,145)	(702)		(702)
Ending Balance at Jun. 30, 2023	$ 6,143,786	$ 1,710	$ (24,676)	$ 7,859,249	$ 7,336	$ (1,803,406)	$ 6,040,213	$ 54,281	$ 49,292	$ 103,573