CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Entity Information [Line Items]
Accumulated depreciation	$ 1,333,588,000	$ 1,218,105,000
Accumulated amortization of intangible assets	12,495,000	11,065,000
Allowance for doubtful accounts	2,844,000	2,075,000
Unamortized deferred financing costs	$ 42,431,000	$ 30,184,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3,500,000,000	3,500,000,000
Common stock, shares issued (in shares)	184,501,128	188,219,605
Common stock, shares outstanding (in shares)	184,501,128	188,219,605
Mandatorily Redeemable Preferred Stock
Entity Information [Line Items]
Preferred stock, par value (dollars per share)	$ 0.01	$ 0.01
Preferred stock, redemption value	$ 1,000	$ 1,000
Preferred stock, redemption rate (percent)	8.00%	8.00%
Preferred stock, authorized (in shares)	350,000,000	350,000,000
Preferred stock, issued (in shares)	7,130	7,130
Preferred stock, outstanding (in shares)	7,130	7,130
Term Loan Facility
Entity Information [Line Items]
Unamortized deferred financing costs	$ 11,386,000	$ 14,879,000
Senior Notes
Entity Information [Line Items]
Unamortized deferred financing costs	$ 37,156,000	$ 26,206,000