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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Apr. 11, 2019 | Jun. 30, 2017
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Finance lease obligations | $ 693.6 | $ 585.7 |  |
Less: unamortized debt issuance costs and discounts | (27.1) | (10.2) |  |
Total debt | 2,775.1 | 2,621.8 |  |
Less: current maturities | 73.3 | 62.8 |  |
Total long-term debt | 2,701.8 | 2,559.0 |  |
Secured Debt | Senior secured term loan |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 1,398.4 | 1,370.0 |  |
Unamortized fair value discount | (1.6) | 2.1 |  |
Secured Debt | Senior secured revolving credit facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 0.0 | 0.0 |  |
Senior Notes | 6.750% senior unsecured notes due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 185.0 | 185.0 |  |
Stated interest rate (percent) | 6.75% |  |  | 6.75%
Senior Notes | 10.000% senior unsecured notes due 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 320.0 | 320.0 |  |
Stated interest rate (percent) | 10.00% |  | 10.00% |
Notes payable and other secured loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 205.2 | $ 171.3 |  |

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