Derivatives (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Cash Flow Hedging [Member]
Amount of Loss or (Gain) Reclassified from AOCI into Income (Effective Portion):
Effective portion	$ 2.8		$ (2.3)		$ 7.6		$ (10.9)
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	2.2	[1]	(2.9)	[1]	5.8	[1]	(12.8)	[1]
Cash Flow Hedging [Member] | Interest Expense Net [Member] | Interest Rate Swap [Member]
Amount of Loss or (Gain) Reclassified from AOCI into Income (Effective Portion):
Effective portion	0.6	[2]	0.6	[2]	1.8	[2]	1.9	[2]
Cash Flow Hedging [Member] | Losses and Other Expenses Net [Member] | Commodity Futures Contracts [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives (Ineffective Portion):
Ineffective portion	(0.1)	[3]	0.1	[3]	(0.2)	[3]	0.1	[3]
Not Designated as Hedging Instrument [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives:
Amount of (Gain) or Loss Recognized in Income on Derivatives	(0.2)		2.9		(0.6)		4.7
Not Designated as Hedging Instrument [Member] | Losses and Other Expenses Net [Member] | Commodity Futures Contracts [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives:
Amount of (Gain) or Loss Recognized in Income on Derivatives	(0.8)	[3]	3.3	[3]	(0.9)	[3]	3.8	[3]
Not Designated as Hedging Instrument [Member] | Losses and Other Expenses Net [Member] | Foreign Currency Forward Contracts [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives:
Amount of (Gain) or Loss Recognized in Income on Derivatives	$ 0.6	[3]	$ (0.4)	[3]	$ 0.3	[3]	$ 0.9	[3]

[1] The loss (gain) is recorded in Cost of goods sold in the accompanying Consolidated Statements of Operations.

[2] The loss is recorded in Interest expense, net in the accompanying Consolidated Statements of Operations.

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