Quarterly report pursuant to Section 13 or 15(d)

Investments, Available-for-Sale Investments (Detail)

v3.7.0.1
Investments, Available-for-Sale Investments (Detail) - USD ($)
$ in Millions
3 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Dec. 31, 2016
Available-for-sale Securities [Abstract]      
Fair Value $ 10,510    
Adjusted Cost, Total 13,170   $ 14,344
Gross Unrealized Gains, Total 4,198   3,372
Gross Unrealized Losses, Total (27)   (34)
Fair Value, Total 17,341   17,682
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 499 $ 2,900  
Available-for-sale Securities, Gross Realized Gains 266 $ 86  
Due in 1 year or less, Fair Value 4,287    
Due in 1-2 years, Fair Value 1,647    
Due in 2-5 years, Fair Value 3,357    
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value 145    
Instruments not due at a single maturity date, Fair Value 1,074    
Corporate Debt Securities [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost 4,396   3,847
Gross Unrealized Gains 7   4
Gross Unrealized Losses (10)   (14)
Fair Value 4,393   3,837
Financial Institution Instruments [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost 4,708   6,098
Gross Unrealized Gains 8   5
Gross Unrealized Losses (10)   (11)
Fair Value 4,706   6,092
Government Debt [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost 1,417   1,581
Gross Unrealized Gains 1   0
Gross Unrealized Losses (7)   (8)
Fair Value 1,411   1,573
Marketable Equity Securities [Member]      
Available-for-sale Securities [Abstract]      
Adjusted Cost 2,649   2,818
Gross Unrealized Gains 4,182   3,363
Gross Unrealized Losses 0   (1)
Fair Value $ 6,831   $ 6,180