Reclassification Out of Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior service credit, net of tax	$ 0.1	$ 0.5
Amortization of net actuarial gain, net of tax	(0.2)	2.5
Total reclassification, net of tax - pension and postretirement benefits	0.1	(3.0)
Reclassification, net of tax - cash flow hedges	(0.1)	(0.1)
Total reclassification, net of tax	(0.2)	2.9
Commodity Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification, net of tax - cash flow hedges	0.1	0
Foreign Exchange Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification, net of tax - cash flow hedges	(0.2)	(0.1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification of prior service credit, net of tax	$ 0	$ 0