Quarterly report pursuant to Section 13 or 15(d)

Investments (Details 5)

v2.4.0.8
Investments (Details 5) (USD $)
In Millions, unless otherwise specified
Jun. 28, 2013
Dec. 31, 2012
Investments [Abstracts]    
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis $ 1,210  
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value 1,218  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 1,541  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,544  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 141  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 146  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 341  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 337  
Available-for-sale Securities, Amortized Cost Basis 4,182 4,126
Cost Method Investments [Abstract]    
Cost-method Investments, Aggregate Carrying Amount 150 145
Held-to-maturity securities, by type    
Available-for-sale Securities Fair Value 4,719 4,593
Equity Securities [Member]
   
Investments [Abstracts]    
Available-for-sale Securities, Amortized Cost Basis 949 957
Held-to-maturity securities, by type    
Available-for-sale Securities Fair Value $ 1,474 $ 1,388