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Debt - Schedule of Debt Summarized (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Sep. 25, 2018
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 620.4
Total debt	606.6	$ 622.1
Other	0.0	0.1
Debt issuance costs	(6.5)	(7.2)
Less: Current debt	(1.9)	(3.3)
Long-term debt	604.7	618.8
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	1.3
Long-term Debt, Maturities, Repayments of Principal in Year Two	3.2
Long-term Debt, Maturities, Repayments of Principal in Year Three	3.8
Long-term Debt, Maturities, Repayments of Principal in Year Four	3.7
Long-term Debt, Maturities, Repayments of Principal in Year Five	66.9
Thereafter	541.5
Revolving credit facility | Revolving credit facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Long-term Debt, Gross	64.0	76.0
Term loan facility | Term loan facility
Debt Instrument [Line Items]
Long-term Debt, Gross	198.5	199.5
Senior unsecured notes
Debt Instrument [Line Items]
Discount	7.3	7.6
Senior unsecured notes | 6.875% senior unsecured notes due October 1, 2026, net of discount of $7.3 million and $7.6 million at June 30, 2019 and December 31, 2018, respectively
Debt Instrument [Line Items]
Long-term Debt, Gross	342.7	342.4
Interest rate			6.875%
French employee profit sharing
Debt Instrument [Line Items]
Long-term Debt, Gross	4.4	6.6
Finance lease and capital lease obligations, respectively
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 3.5	$ 4.7

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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