Quarterly report pursuant to Section 13 or 15(d)

Investments (Details 5)

v2.4.0.6
Investments (Details 5) (USD $)
In Millions, unless otherwise specified
Mar. 29, 2013
Dec. 31, 2012
Investments [Abstracts]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis $ 1,166  
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 1,171  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 1,502  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,509  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 263  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 291  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 315  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 318  
Available-for-sale Securities, Amortized Cost Basis 4,208 4,126
Cost Method Investments [Abstract]    
Cost-method Investments, Aggregate Carrying Amount 147 145
Held-to-maturity securities, by type    
Available-for-sale Securities Fair Value 4,698 4,593
Equity Securities [Member]
   
Investments [Abstracts]    
Available-for-sale Securities, Amortized Cost Basis 962 957
Held-to-maturity securities, by type    
Available-for-sale Securities Fair Value $ 1,409 $ 1,388