Annual report pursuant to Section 13 and 15(d)

Financial Instruments (Details) (Narrative)

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Financial Instruments (Details) (Narrative) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 28, 2013
Sep. 28, 2013
Jun. 29, 2013
Mar. 30, 2013
Dec. 29, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Schedule of Investments [Line Items]                      
Gain (loss) on sales of available-for-sale securities                 $ (2) $ 0  
Proceeds from sale of available-for-sale securities                   6  
Impairment charge on marketable securities                 0 (4)  
Noncurrent marketable securities, at fair value 90       181       90 181  
Other income (expense), net (2) 2 (2) (3) (4) 16 (5) (1) (5) 6 (199)
Auction rate securities sold, carrying value                 28    
Long-term marketable securities stated maturities period maximum 2 years               2 years    
Money Market Funds
                     
Schedule of Investments [Line Items]                      
Available-for-sale securities pledged as collateral 18       10       18 10  
Noncurrent marketable securities, at fair value 2       13       2 13  
Mutual Funds
                     
Schedule of Investments [Line Items]                      
Restricted Investments $ 14       $ 14       $ 14 $ 14