Derivatives (Details 4) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cost of Goods Sold [Member] | Commodity Futures Contracts [Member]
Amount of Loss or (Gain) Reclassified from AOCI into Income (Effective Portion):
Effective portion	[1]	$ 2.8	$ 2.8	$ 6.2	$ 3.9
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Expense [Member] | Commodity Futures Contracts [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives (Ineffective Portion):
Ineffective portion	[2]	0.0	(0.1)	0.0	0.1
Not Designated as Hedging Instrument [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives (Ineffective Portion):
Amount of loss (gain) recognized in net income		0.4	(0.4)	1.0	0.4
Not Designated as Hedging Instrument [Member] | Other Expense [Member] | Commodity Futures Contracts [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives (Ineffective Portion):
Amount of loss (gain) recognized in net income	[2]	0.4	(0.4)	0.8	0.3
Not Designated as Hedging Instrument [Member] | Other Expense [Member] | Foreign Currency Forward Contracts [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives (Ineffective Portion):
Amount of loss (gain) recognized in net income	[2]	$ 0.0	$ 0.0	$ 0.2	$ 0.1

[1] The loss was recorded in Cost of goods sold in the accompanying Consolidated Statements of Operations.

[2] The loss (gain) was recorded in Losses (gains) and other expenses, net in the accompanying Consolidated Statements of Operations.