Schedule III - Real Estate and Accumulated Depreciation - Reconciliation of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Real Estate:
Beginning balance	$ 6,459,745	$ 6,732,637	$ 7,077,623
Acquisitions	488,447		23,472
Capital expenditures	86,936	115,850	159,574
Disposal of Assets	(253,469)	(314,186)	(503,383)
Other	(14,856)	(74,556)	(24,649)
Ending balance	6,766,803	6,459,745	6,732,637
Reconciliation of Accumulated Depreciation:
Beginning balance	898,287	735,322	543,430
Depreciation	223,225	223,286	226,953
Disposal of Assets	(55,103)	(60,321)	(35,061)
Ending balance	1,066,409	$ 898,287	$ 735,322
Aggregate cost of properties for federal income tax purposes	$ 6,400,000