Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Details) (Narrative)

v2.4.0.8
Financial Instruments (Details) (Narrative) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 28, 2013
Sep. 28, 2013
Money Market Funds
Dec. 29, 2012
Money Market Funds
Sep. 28, 2013
Mutual Funds
Dec. 29, 2012
Mutual Funds
Financial Instruments [Line Items]            
Available-for-sale investments used as collateral     $ 18 $ 10    
Restricted Investments         13 14
Realized gain (loss) on available-for-sale securities 0 0        
Sales of available-for-sale securities 0 14        
Auction rate securities, carrying value 15 15        
Auction rate securities, par value $ 22 $ 22