Derivatives (Details 3) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	$ 0.0	$ 0.0
Derivative Liability, Fair Value	12.4	7.2
Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Other Assets Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	10.4	6.7
Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Other Liabilities Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	1.5	0.5
Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	0.4	0.0
Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Other Liabilities Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	0.1	0.0
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.1	0.3
Derivative Liability, Fair Value	1.8	0.8
Not Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Not Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Other Assets Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Not Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	1.4	0.7
Not Designated as Hedging Instrument [Member] | Commodity Futures Contracts [Member] | Other Liabilities Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	0.3	0.1
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	0.1	0.3
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	0.1	0.0
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Other Liabilities Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value	$ 0.0	$ 0.0