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Debt, Interest Income, Expense and Other Finance Costs - Summary of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Finance leases	$ 21.2	$ 18.2
Total debt	508.7	524.7
Less: Current maturities of long-term debt and finance leases	30.6	22.9
Long-term debt	478.1	501.8
Other
Debt Instrument [Line Items]
Long-term debt	3.3	3.3
Term Loans | Term Loans
Debt Instrument [Line Items]
Long-term debt	484.1	503.2
Credit Facility | Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 0.0	$ 0.0

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Present value of lessee's discounted obligation for lease payments from finance lease.

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