Quarterly report pursuant to Section 13 or 15(d)

Investments, Available-for-Sale Debt Investments (Detail)

v3.8.0.1
Investments, Available-for-Sale Debt Investments (Detail) - USD ($)
$ in Millions
3 Months Ended
Apr. 01, 2017
Mar. 31, 2018
Dec. 30, 2017
Available-for-sale Securities [Abstract]      
Fair Value   $ 6,648  
Available-for-sale Securities, Amortized Cost Basis   6,699 $ 6,642
Gross Unrealized Gains, Total   5 7
Gross Unrealized Losses, Total   (56) (28)
Fair Value, Total   6,648 6,621
Available-for-sale Securities, Gross Realized Gains $ 0    
Due in 1 year or less, Fair Value   2,823  
Due in 1-2 years, Fair Value   1,715  
Due in 2-5 years, Fair Value   1,651  
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value   69  
Instruments not due at a single maturity date, Fair Value   390  
Corporate Debt Securities [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost   2,440 2,294
Gross Unrealized Gains   2 4
Gross Unrealized Losses   (27) (13)
Fair Value   2,415 2,285
Fixed Income Securities [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost   3,303 3,387
Gross Unrealized Gains   3 3
Gross Unrealized Losses   (17) (9)
Fair Value   3,289 3,381
Government Debt [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost   956 961
Gross Unrealized Gains   0 0
Gross Unrealized Losses   (12) (6)
Fair Value   $ 944 $ 955