Quarterly report pursuant to Section 13 or 15(d)

Cash and Investments, Available-for-Sale Investments (Detail)

v3.5.0.2
Cash and Investments, Available-for-Sale Investments (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 01, 2016
Sep. 26, 2015
Oct. 01, 2016
Sep. 26, 2015
Dec. 26, 2015
Available-for-sale Securities [Abstract]          
Fair Value $ 10,317   $ 10,317    
Adjusted Cost, Total 13,101   13,101   $ 19,311
Gross Unrealized Gains, Total 3,248   3,248   2,710
Gross Unrealized Losses, Total (10)   (10)   (14)
Fair Value, Total 16,339   16,339   22,007
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 195 $ 1,076 4,000 $ 1,185  
Available-for-sale Securities, Gross Realized Gains 41 12 538 97  
Due in 1 year or less, Fair Value 4,217   4,217    
Due in 1-2 years, Fair Value 2,095   2,095    
Due in 2-5 years, Fair Value 2,095   2,095    
Instruments not due at a single maturity date, Fair Value 1,910   1,910    
Cash and Cash Equivalents [Member]          
Available-for-sale Securities [Abstract]          
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 87 $ 134 216 $ 134  
Asset-Backed Securities [Member]          
Available-for-sale Securities [Abstract]          
Adjusted Cost 0   0   5
Gross Unrealized Gains 0   0   0
Gross Unrealized Losses 0   0   (1)
Fair Value 0   0   4
Corporate Debt Securities [Member]          
Available-for-sale Securities [Abstract]          
Adjusted Cost 3,347   3,347   4,164
Gross Unrealized Gains 8   8   3
Gross Unrealized Losses (8)   (8)   (10)
Fair Value 3,347   3,347   4,157
Financial Institution Instruments [Member]          
Available-for-sale Securities [Abstract]          
Adjusted Cost 5,910   5,910   11,140
Gross Unrealized Gains 7   7   1
Gross Unrealized Losses (1)   (1)   (2)
Fair Value 5,916   5,916   11,139
Government Debt [Member]          
Available-for-sale Securities [Abstract]          
Adjusted Cost 1,051   1,051   748
Gross Unrealized Gains 3   3   0
Gross Unrealized Losses 0   0   (1)
Fair Value 1,054   1,054   747
Marketable Equity Securities [Member]          
Available-for-sale Securities [Abstract]          
Adjusted Cost 2,793   2,793   3,254
Gross Unrealized Gains 3,230   3,230   2,706
Gross Unrealized Losses (1)   (1)   0
Fair Value 6,022   6,022   $ 5,960
Debt Securities [Member]          
Available-for-sale Securities [Abstract]          
Adjusted Cost 10,308   10,308    
Due in 1 year or less, Cost 4,220   4,220    
Due in 1-2 years, Cost 2,090   2,090    
Due in 2-5 years, Cost 2,088   2,088    
Instruments not due at a single maturity date, Cost $ 1,910   $ 1,910