Debt - Schedule of Debt and Capital Lease Obligations (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Current portion of capital lease	$ 0.9
Short-term borrowings	0.9
Long-term debt	688.0	$ 576.5
Non-current portion of capital lease	0.4
Total debt	688.9	576.5
Senior unsecured credit facility \| Revolving loan due 2019
Debt Instrument [Line Items]
Long-term debt	391.0	280.0
4.7% senior notes due 2025
Debt Instrument [Line Items]
Senior notes	300.0	300.0
Senior notes - original issue discount	(0.8)	(0.8)
Senior notes - deferred finance costs	$ (2.6)	$ (2.7)

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

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-Name Accounting Standards Codification
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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 and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. 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, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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