SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION 3 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate and Equipment
Balance at the beginning of the period	$ 7,456,940	$ 6,222,360	$ 5,247,374
Disposals	(43,809)	0	0
Additions	317,392	1,234,580	974,986
Balance at the end of the period	7,730,523	7,456,940	6,222,360
Accumulated Depreciation
Balance at the beginning of the period	1,147,540	973,205	830,448
Additions	188,445	174,335	142,757
Disposals	(7,974)	0	0
SEC Schedule III, Real Estate, Write-down or Reserve, Amount	0	0	0
Impairment	0	0	0
Balance at the end of the period	$ 1,328,011	$ 1,147,540	$ 973,205