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Financial Instruments (Details) (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments Not Recorded at Fair Value) (USD $)
In Millions, unless otherwise specified
Dec. 28, 2013
Dec. 29, 2012
Carrying Amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt (excluding capital leases) $ 55 $ 0
Long-term debt (excluding capital leases) 1,986 2,019
Estimate Fair Value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt (excluding capital leases) 55 0
Long-term debt (excluding capital leases) $ 2,132 $ 1,837