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Other Current Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Other Current Liabilities    
Accrued sales tax $ 44.9 $ 44.9
Accrued payroll and benefits 13.7 10.7
Accrued capital expenditures 11.7 7.9
Accrued property taxes 9.3  
Accrued interest expense $ 5.8 $ 16.4