Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Investments, Available-for-Sale Debt Investments (Detail) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 30, 2017
Available-for-sale Securities [Abstract]    
Fair Value $ 6,228  
Available-for-sale Securities, Amortized Cost Basis 6,278 $ 6,642
Gross Unrealized Gains, Total 6 7
Gross Unrealized Losses, Total (56) (28)
Fair Value, Total 6,228 6,621
Due in 1 year or less, Fair Value 3,011  
Due in 1-2 years, Fair Value 1,115  
Due in 2-5 years, Fair Value 1,887  
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value 69  
Instruments not due at a single maturity date, Fair Value 146  
Corporate Debt Securities [Member]    
Available-for-sale Securities [Abstract]    
Adjusted Cost 2,054 2,294
Gross Unrealized Gains 2 4
Gross Unrealized Losses (27) (13)
Fair Value 2,029 2,285
Fixed Income Securities [Member]    
Available-for-sale Securities [Abstract]    
Adjusted Cost 3,433 3,387
Gross Unrealized Gains 4 3
Gross Unrealized Losses (16) (9)
Fair Value 3,421 3,381
Government Debt [Member]    
Available-for-sale Securities [Abstract]    
Adjusted Cost 791 961
Gross Unrealized Gains 0 0
Gross Unrealized Losses (13) (6)
Fair Value $ 778 $ 955