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Debt, Interest Income, Expense and Other Finance Costs - Schedule of Debt (Details) - USD ($) $ in Millions | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 742.3 | $ 910.2
Current maturities of long-term debt and capital leases | 35.7 | 25.6
Long-term debt | 706.6 | 884.6
Credit Facility |  |
Debt Instrument [Line Items] |  |
Total debt | 209.0 | 60.0
Term Loans |  |
Debt Instrument [Line Items] |  |
Total debt | 523.2 | 835.8
Capital leases |  |
Debt Instrument [Line Items] |  |
Total debt | 7.7 | 10.4
Other |  |
Debt Instrument [Line Items] |  |
Total debt | $ 2.4 | $ 4.0

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