Derivative Financial Instruments (Company's Derivative Positions and Their Impact on Financial Position) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 21.4	$ 16.1
Derivative Liabilities	28.9	40.8
Not Designated as Hedging Instrument [Member] | Non-Trade Amounts Receivable [Member] | Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0
Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member] | Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	10.2
Designated as Hedging Instrument [Member] | Non-Trade Amounts Receivable [Member] | Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets		0
Designated as Hedging Instrument [Member] | Non-Trade Amounts Receivable [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	21.4	16.1
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		23.1
Designated as Hedging Instrument [Member] | Accrued Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 18.7	$ 17.7