Quarterly report pursuant to Section 13 or 15(d)

Investments (Details 5)

v3.8.0.1
Investments (Details 5) - USD ($)
$ in Millions
Sep. 29, 2017
Dec. 31, 2016
Investments [Abstracts]    
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis $ 2,301  
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value 2,353  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 3,722  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 3,799  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 208  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 223  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 319  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 323  
Available-for-sale Securities, Amortized Cost Basis 7,876 $ 5,952
Available-for-sale Securities Fair Value 8,591 6,413
Cost Method Investments [Abstract]    
Cost-method Investments, Aggregate Carrying Amount 146 140
Equity Securities [Member]    
Investments [Abstracts]    
Available-for-sale Securities, Amortized Cost Basis 1,326 1,252
Available-for-sale Securities Fair Value $ 1,893 $ 1,655