Losses and Other Expenses, net (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary of Losses (Gains) and Other Expenses, net
Realized losses on settled futures contracts	$ 0.8	$ 1.0	$ 1.5
Foreign currency exchange losses	1.6	0.5	0.8
Losses (gains) on disposal of fixed assets	(0.3)	(1.0)	0.4
Unrealized Gain (Loss) on Derivatives and Commodity Contracts	(0.6)	(0.4)	2.2
Liability for Asbestos and Environmental Claims, Net, Incurred Loss	0.9	6.3	0
Acquisition expenses	0	0.2	0.1
Special legal contingency charge	0.9	1.2	1.2
Environmental Remediation Expense	2.0	0	0
Other Expenses	0.3	0.7	0.7
Other Operating Income (Expense), Net	$ 6.8	$ 9.3	$ 2.5