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Debt - Summary of Components of Long-Term Borrowings and Finance Lease Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Finance lease obligations	$ 0.6	$ 0.6
Total long-term borrowings and finance lease obligations, including current portion	210.0	220.5
Less: Current finance lease obligations	0.2	0.2
Total long-term borrowings and finance lease obligations	209.8	220.3
2019 Credit Agreement
Debt Instrument [Line Items]
Credit Agreement	$ 209.4	$ 219.9

X

- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, including portion classified as current.

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