Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Details) (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) (Details)

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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
Sep. 28, 2013
Dec. 29, 2012
Financial Instrument [Line Items]    
Long-term debt (excluding capital leases), at carrying amount $ 2,031 $ 2,019
Long-term debt (excluding capital leases), at estimated fair value $ 2,105 $ 1,837