Fair Value Measurements and Risk (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair values of derivative instruments
Asset Derivatives	$ 2.2	$ 1.4
Liability Derivatives	11.3	5.5
Derivatives designated as hedging instruments under ASC 815 | Other current assets
Fair values of derivative instruments
Asset Derivatives, Commodity contracts	0	0.2
Asset Derivatives, Currency contracts	0.7	1.2
Derivatives designated as hedging instruments under ASC 815 | Other current liabilities
Fair values of derivative instruments
Liability Derivatives, Commodity contracts	0.5	0.4
Liability Derivatives, Currency contracts	0.1	0.2
Derivatives designated as hedging instruments under ASC 815 | Other Assets [Member]
Fair values of derivative instruments
Asset Derivatives, Currency contracts	1.4
Derivatives designated as hedging instruments under ASC 815 | Other Liabilities [Member]
Fair values of derivative instruments
Liability Derivatives, Currency contracts	0
Derivatives not designated as hedging instruments under ASC 815 | Other current assets
Fair values of derivative instruments
Asset Derivatives, Currency contracts	0.1	0
Derivatives not designated as hedging instruments under ASC 815 | Other current liabilities
Fair values of derivative instruments
Liability Derivatives, Currency contracts	$ 10.7	$ 4.9