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. 29, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Oct. 01, 2011
Jul. 02, 2011
Apr. 02, 2011
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Schedule of Investments [Line Items]                      
Gain (loss) on sales of available-for-sale securities                 $ 0 $ 4  
Proceeds from sale of available-for-sale securities                 6 29  
Document Fiscal Year Focus                 2012    
Current Fiscal Year End Date                 --12-29    
Impairment charge on marketable securities                 4    
Other income (expense), net (4) 16 (5) (1) (207) (7) 4 11 6 (199) 311
Auction rate securities at par value 37               37    
Auction rate securities at fair value 28               28    
Auction rate securities sold, par value                   21  
Auction rate securities sold, carrying value                   19  
Payments to acquire long-term marketable securities                 32 149  
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 10       10       10 10  
Mutual Funds
                      
Schedule of Investments [Line Items]                      
Available-for-sale securities pledged as collateral 14               14    
Auction Rate Securities
                      
Schedule of Investments [Line Items]                      
Other income (expense), net                 $ 2