Financial Instruments (Gain and Loss on the Derivative Representing Either Hedge Ineffectiveness or Hedge Components Excluded From the Assessment of Effectiveness) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2012		Sep. 30, 2011		Sep. 28, 2012		Sep. 30, 2011
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	$ 5.8		$ (49.6)		$ 5.9		$ (52.6)
Reclassified from Accumulated OCI Gain / (Loss)	(3.7)		5.7		(4.5)		26.9
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	0.1		(0.6)	[1]	(0.3)		(0.7)	[1]
Interest Expense [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	(0.1)		(0.3)		0.2		(0.6)
Reclassified from Accumulated OCI Gain / (Loss)	0		0		0		0
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	0	[1]	(0.1)	[1]	0	[1]	(0.3)	[1]
Cost of Sales [Member] | Commodity Futures [Member]
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	6.2		(50.2)		6.1		(54.3)
Reclassified from Accumulated OCI Gain / (Loss)	(3.9)		5.7		(3.8)		26.6
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	0.1	[1]	(0.5)	[1]	(0.3)	[1]	(0.5)	[1]
Other Income /(Expense) [Member] | Foreign Currency Exchanges [Member]
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	(0.3)		0.9		(0.4)		2.3
Reclassified from Accumulated OCI Gain / (Loss)	0.2		0		(0.7)		0.3
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 0.1	[1]

[1] The ineffective portion and the amount excluded from effectiveness testing for all derivatives designated as cash flow hedges is recognized in other income and expense.