SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION - Schedule of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate and Equipment
Balance at the beginning of the period	$ 7,876,300	$ 7,824,763	$ 7,617,547
Additions	277,350	242,270	226,105
Disposals	(250,996)	(17,923)	(18,889)
Impairment	(114,786)	(46,797)
Cost basis adjustment	(77,642)	(122,711)
Reclassification of assets held for sale	(248,640)	(3,302)
Balance at the end of the period	7,461,586	7,876,300	7,824,763
Accumulated Depreciation
Balance at the beginning of the period	1,534,392	1,454,477	1,270,716
Additions	221,165	205,117	193,697
Disposals	(54,816)	(1,101)	(9,936)
Impairment	0	0
Cost basis adjustment	(77,642)	(122,711)
Reclassification of assets held for sale	(52,298)	(1,390)
Balance at the end of the period	$ 1,570,801	$ 1,534,392	$ 1,454,477