Hedging Transactions And Derivative Financial Instruments (Schedule Of Fair Value Assets And Liabilities Relating To Foreign Currency Forward Contracts) (Details) (Foreign Currency Forward Contracts [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Cash Flow Hedging [Member]
Hedging Transactions And Derivative Financial Instruments [Line Items]
Contracts designated as cash flow hedging instruments	$ (2)	$ 1
Non Designated [Member]
Hedging Transactions And Derivative Financial Instruments [Line Items]
Contracts not designated as hedging instruments		$ (4)