Consolidated Statement of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid- In-Capital	Treasury Stock	Accumulated Other Comprehensive (Loss) 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)	(5,225)					(3,726)	(1,499)
Other comprehensive income (loss)	48,350				48,350
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		5
DRSPP proceeds	351		351
Reallocation of noncontrolling interest in the Operating Partnership	(26,609)					(26,609)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		110
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	6,728	$ 2	6,726
Repurchases of common stock (in shares)		(1,267)
Repurchases of common stock	(80,310)	$ (13)	(80,297)
Contribution to consolidated joint venture interests	171						171
Cash distributions to noncontrolling interests	(110)						(110)
Issuance of special dividend paid primarily in stock (in shares)		1,974
Issuance of special dividend paid primarily in stock	123,529		123,529
Cash distributions declared	(63,312)					(63,312)
Ending Balance at Mar. 31, 2021	4,935,620	$ 705	3,913,258	(124,049)	(18,897)	918,077	24,594	221,932
Ending Balance (in shares) at Mar. 31, 2021		67,296
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
Preferred dividends	(7,475)
Ending Balance at Jun. 30, 2021	4,813,757	$ 690	3,823,290	(124,049)	(66,863)	934,132	24,625	221,932
Ending Balance (in shares) at Jun. 30, 2021		65,866
Beginning Balance at Mar. 31, 2021	4,935,620	$ 705	3,913,258	(124,049)	(18,897)	918,077	24,594	221,932
Beginning Balance (in shares) at Mar. 31, 2021		67,296
Increase (Decrease) in Stockholders' Equity
Net income (loss)	109,029					109,069	(40)
Other comprehensive income (loss)	(47,966)				(47,966)
Preferred dividends	(3,737)					(3,737)
DRSPP proceeds (in shares)		2
DRSPP proceeds	116		116
Reallocation of noncontrolling interest in the Operating Partnership	(5,866)					(5,866)
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	7,591		7,591
Repurchases of common stock (in shares)		(1,431)
Repurchases of common stock	(118,577)	$ (15)	(97,675)			(20,887)
Contribution to consolidated joint venture interests	134						134
Cash distributions to noncontrolling interests	(63)						(63)
Cash distributions declared	(62,524)					(62,524)
Ending Balance at Jun. 30, 2021	4,813,757	$ 690	3,823,290	(124,049)	(66,863)	934,132	24,625	221,932
Ending Balance (in shares) at Jun. 30, 2021		65,866
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)	11,346					11,489	(143)
Other comprehensive income (loss)	39,497				39,497
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		1
DRSPP proceeds	89		89
Reallocation of noncontrolling interest in the Operating Partnership	(43,023)					(43,023)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		28
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	5,056	$ 1	5,055
Repurchases of common stock (in shares)		(1,971)
Repurchases of common stock	(151,197)	$ (20)	(114,979)			(36,198)
Cash distributions to noncontrolling interests	(123)						(123)
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	(57,665)					(57,665)
Ending Balance at Mar. 31, 2022	4,739,115	$ 653	3,792,689	(128,655)	(7,261)	846,646	13,111	221,932
Ending Balance (in shares) at Mar. 31, 2022		64,124
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
Preferred dividends	(7,475)
Ending Balance at Jun. 30, 2022	4,748,764	$ 655	3,801,272	(128,655)	8,595	779,999	64,966	221,932
Ending Balance (in shares) at Jun. 30, 2022		64,302
Beginning Balance at Mar. 31, 2022	4,739,115	$ 653	3,792,689	(128,655)	(7,261)	846,646	13,111	221,932
Beginning Balance (in shares) at Mar. 31, 2022		64,124
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(36,735)					(40,139)	3,404
Other comprehensive income (loss)	15,856				15,856
Preferred dividends	(3,737)					(3,737)
DRSPP proceeds (in shares)		2
DRSPP proceeds	110		110
Reallocation of noncontrolling interest in the Operating Partnership	37,938					37,938
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		176
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	8,475	$ 2	8,473
Contribution to consolidated joint venture interests	51,348						51,348
Cash distributions to noncontrolling interests	(2,897)						(2,897)
Cash distributions declared	(60,709)					(60,709)
Ending Balance at Jun. 30, 2022	$ 4,748,764	$ 655	$ 3,801,272	$ (128,655)	$ 8,595	$ 779,999	$ 64,966	$ 221,932
Ending Balance (in shares) at Jun. 30, 2022		64,302