Pension and Post-Retirement Benefits - Classification of Net Periodic Pension (Income) Costs (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit costs	$ (5.4)	$ (0.4)	$ 3.9
Cost of Sales
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit costs	(4.2)	(2.3)
SG&A Expenses
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit costs	(0.7)	2.4
Inventories
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit costs	$ (0.5)	$ (0.5)