Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Accounting Standards Codification
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-Section S99
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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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Financing Arrangements (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Apr. 07, 2011
Components of Long-term debt
Long-term debt	$ 468.1	$ 443.8
Less current maturities	17.8	9.4
Total long-term debt, net of current portion	$ 450.3	434.4
8.125% senior notes due 2021
Debt Instrument [Line Items]
Senior notes, interest rate	8.125%		8.125%
Components of Long-term debt
Long-term debt	$ 250.0	250.0
Other
Components of Long-term debt
Long-term debt	$ 21.2	3.0
Revolving credit facility
Debt Instrument [Line Items]
Senior notes, interest rate	2.09%
Components of Long-term debt
Long-term debt	$ 169.0	162.0
Term Loan
Debt Instrument [Line Items]
Senior notes, interest rate	2.38%
Components of Long-term debt
Long-term debt	$ 27.9	$ 28.8