Financing Arrangements - Schedule of Long-term Debt (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Components of Long-term debt
Long-term debt	$ 392.5	$ 378.6
Less current maturities	4.3	4.4
Total long-term debt, net of current portion	388.2	374.2
8.125% senior notes due 2021 [Member]
Debt Instrument [Line Items]
Senior notes, interest rate	8.125%
Components of Long-term debt
Long-term debt	250.0	250.0
Other [Member]
Components of Long-term debt
Long-term debt	4.2	4.4
Revolving credit facility [Member]
Components of Long-term debt
Long-term debt	117.8	101.9
Term Loan [Member]
Components of Long-term debt
Long-term debt	$ 20.5	$ 22.3