Consolidated Statement of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid- In-Capital	Treasury Stock	Accumulated Other Comprehensive Income	Retained Earnings	Noncontrolling Interests	Series I Preferred Stock Series I Preferred Stock
Beginning Balance at Dec. 31, 2020	$ 4,935,795	$ 716	$ 3,862,949	$ (124,049)	$ (67,247)	$ 1,015,462	$ 26,032	$ 221,932
Beginning Balance (in shares) at Dec. 31, 2020		66,474
Increase (Decrease) in Stockholders' Equity
Net income (loss)	494,832					497,286	(2,454)
Other comprehensive income	6,650				6,650
Preferred dividends	(11,213)					(11,213)
DRSPP proceeds (in shares)		9
DRSPP proceeds	613		613
Reallocation of noncontrolling interest in the Operating Partnership	(17,245)					(17,245)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		108
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	22,251	$ 2	22,249
Repurchases of common stock (in shares)		(3,684)
Repurchases of common stock	(276,844)	$ (38)	(235,221)			(41,585)
Contribution to consolidated joint venture interests	310						310
Sale of interest in partially owned entity	(4,476)						(4,476)
Cash distributions to noncontrolling interests	(5,403)						(5,403)
Issuance of special dividend paid primarily in stock (in shares)		1,974
Issuance of special dividend paid primarily in stock	123,529		123,529	(2,111)		2,111
Cash distributions declared	(186,584)					(186,584)
Ending Balance at Sep. 30, 2021	5,082,215	$ 680	3,774,119	(126,160)	(60,597)	1,258,232	14,009	221,932
Ending Balance (in shares) at Sep. 30, 2021		64,881
Beginning Balance at Dec. 31, 2020	4,935,795	$ 716	3,862,949	(124,049)	(67,247)	1,015,462	26,032	221,932
Beginning Balance (in shares) at Dec. 31, 2020		66,474
Ending Balance at Dec. 31, 2021	4,778,253	$ 672	3,739,409	(126,160)	(46,758)	975,781	13,377	221,932
Ending Balance (in shares) at Dec. 31, 2021		64,105
Beginning Balance at Jun. 30, 2021	4,813,757	$ 690	3,823,290	(124,049)	(66,863)	934,132	24,625	221,932
Beginning Balance (in shares) at Jun. 30, 2021		65,866
Increase (Decrease) in Stockholders' Equity
Net income (loss)	391,028					391,943	(915)
Other comprehensive income	6,266				6,266
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		2
DRSPP proceeds	146		146
Reallocation of noncontrolling interest in the Operating Partnership	15,230					15,230
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		(1)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	7,932		7,932
Repurchases of common stock (in shares)		(986)
Repurchases of common stock	(77,957)	$ (10)	(57,249)			(20,698)
Contribution to consolidated joint venture interests	5						5
Sale of interest in partially owned entity	(4,476)						(4,476)
Cash distributions to noncontrolling interests	(5,230)						(5,230)
Issuance of special dividend paid primarily in stock	0			(2,111)		2,111
Cash distributions declared	(60,748)					(60,748)
Ending Balance at Sep. 30, 2021	5,082,215	$ 680	3,774,119	(126,160)	(60,597)	1,258,232	14,009	221,932
Ending Balance (in shares) at Sep. 30, 2021		64,881
Beginning Balance at Dec. 31, 2021	4,778,253	$ 672	3,739,409	(126,160)	(46,758)	975,781	13,377	221,932
Beginning Balance (in shares) at Dec. 31, 2021		64,105
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(15,266)					(17,535)	2,269
Redemption and conversion of common units	(29,817)		(29,742)				(75)
Other comprehensive income	104,332				104,332
Preferred dividends	(11,213)					(11,213)
DRSPP proceeds (in shares)		6
DRSPP proceeds	339		339
Reallocation of noncontrolling interest in the Operating Partnership	23,539					23,539
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		215
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	22,147	$ 3	22,144
Repurchases of common stock (in shares)		(1,971)
Repurchases of common stock	(151,197)	$ (20)	(114,979)			(36,198)
Contribution to consolidated joint venture interests	52,164						52,164
Cash distributions to noncontrolling interests	(3,168)						(3,168)
Issuance of special dividend paid primarily in stock (in shares)		1,961
Issuance of special dividend paid primarily in stock	160,620		163,115	(2,495)
Cash distributions declared	(178,512)					(178,512)
Ending Balance at Sep. 30, 2022	4,752,221	$ 655	3,780,286	(128,655)	57,574	755,862	64,567	221,932
Ending Balance (in shares) at Sep. 30, 2022		64,316
Beginning Balance at Jun. 30, 2022	4,748,764	$ 655	3,801,272	(128,655)	8,595	779,999	64,966	221,932
Beginning Balance (in shares) at Jun. 30, 2022		64,302
Increase (Decrease) in Stockholders' Equity
Net income (loss)	10,122					11,115	(993)
Redemption and conversion of common units	(29,817)		(29,742)				(75)
Other comprehensive income	48,979				48,979
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		3
DRSPP proceeds	140		140
Reallocation of noncontrolling interest in the Operating Partnership	28,624					28,624
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		11
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	8,616		8,616
Contribution to consolidated joint venture interests	817						817
Cash distributions to noncontrolling interests	(148)						(148)
Cash distributions declared	(60,138)					(60,138)
Ending Balance at Sep. 30, 2022	$ 4,752,221	$ 655	$ 3,780,286	$ (128,655)	$ 57,574	$ 755,862	$ 64,567	$ 221,932
Ending Balance (in shares) at Sep. 30, 2022		64,316