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Long-Term Debt - Summary (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Finance lease obligations $ 504.3 $ 364.6
Less: unamortized debt issuance costs and discounts (15.1) (16.5)
Total debt 3,087.7 2,938.8
Less: Current maturities 68.3 60.4
Total long-term debt 3,019.4 2,878.4
Secured Debt | Senior secure term loan    
Debt Instrument [Line Items]    
Long-term debt 1,523.3 1,530.7
Unamortized fair value discount 2.7 3.0
Senior Notes | 6.750% senior unsecured notes due 2025    
Debt Instrument [Line Items]    
Long-term debt $ 370.0 370.0
Stated interest rate (percent) 6.75%  
Senior Notes | 10.000% senior unsecured notes due 2027    
Debt Instrument [Line Items]    
Long-term debt $ 545.0 545.0
Stated interest rate (percent) 10.00%  
Notes payable and other secured loans    
Debt Instrument [Line Items]    
Long-term debt $ 160.2 $ 145.0