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
	Mar. 30, 2012		Apr. 01, 2011
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	$ 8.5		$ 2.5
Reclassified from Accumulated OCI Gain / (Loss)	0.1		16.9
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	(0.2)		(0.1)	[1]
Interest Expense [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	0.2		(0.4)
Reclassified from Accumulated OCI Gain / (Loss)	0		0
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	0	[1]	(0.1)	[1]
Cost of Sales [Member] | Commodity Futures [Member]
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	8.4		0.3
Reclassified from Accumulated OCI Gain / (Loss)	0.7		17.3
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	(0.2)	[1]	0.1	[1]
Other Income /(Expense) [Member] | Foreign Currency Exchanges [Member]
Derivatives, Fair Value [Line Items]
Effective Portion recognized in OCI Gain / (Loss)	(0.1)		2.6
Reclassified from Accumulated OCI Gain / (Loss)	(0.6)		(0.4)
Ineffective portion and amount excluded from effectiveness testing Gain / (Loss)	$ 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.