Derivatives (Details 4) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Commodity Futures Contracts [Member] | Not Designated as Hedging Instrument [Member] | Losses And Other Expenses Net [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives:
Amount of (Gain) or Loss Recognized in Income on Derivatives:	$ 3.3	$ (1.3)	$ 3.8	$ (0.7)
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:	2.9	(0.6)	4.7	(0.8)
Not Designated as Hedging Instrument [Member] | Foreign Currency Froward Contracts [Member] | Losses And Other Expenses Net [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives:
Amount of (Gain) or Loss Recognized in Income on Derivatives:	(0.4)	0.7	0.9	(0.1)
Commodity Futures Contracts [Member] | Cash Flow Hedging [Member] | Cost of Goods Sold [Member]
Amount of Loss or (Gain) Reclassified from AOCI into Income (Effective Portion):
Effective portion	(2.9)	(1.4)	(12.8)	(9.0)
Commodity Futures Contracts [Member] | Cash Flow Hedging [Member] | Losses And Other Expenses Net [Member]
Amount of (Gain) or Loss Recognized in Income on Derivatives (Ineffective Portion):
Ineffective portion	0.1	(0.3)	0.1	(0.4)
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense Net [Member]
Amount of Loss or (Gain) Reclassified from AOCI into Income (Effective Portion):
Effective portion	0.6	0.6	1.9	1.8
Cash Flow Hedging [Member]
Amount of Loss or (Gain) Reclassified from AOCI into Income (Effective Portion):
Effective portion	$ (2.3)	$ (0.8)	$ (10.9)	$ (7.2)