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Financial Instruments (Details) (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 30, 2013
Dec. 29, 2012
Carrying Amount
   
Financial Instrument [Line Items]    
Long-term debt (excluding capital leases) $ 2,023 $ 2,019
Estimated Fair Value
   
Financial Instrument [Line Items]    
Long-term debt (excluding capital leases) $ 2,005 $ 1,837