Quarterly report pursuant to Section 13 or 15(d)

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

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Cash and Investments, Available-for-Sale Investments (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Dec. 28, 2013
Available-For-Sale Investments [Abstract]          
Gross Unrealized Gains     $ 2,771   $ 2,902
Gross Unrealized Losses     (6)   (7)
Fair Value 8,828   8,828    
Adjusted Cost, Total 12,107   12,107   15,191
Fair Value, Total 14,872   14,872   18,086
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 322 294 496 598  
Due in 1 year or less, Cost 6,293   6,293    
Due in 1-2 years, Cost 1,266   1,266    
Due in 2-5 years, Cost 884   884    
Instruments not due at a single maturity date, Cost 368   368    
Cost, Total 8,811   8,811    
Due in 1 year or less, Fair Value 6,313   6,313    
Due in 1-2 years, Fair Value 1,265   1,265    
Due in 2-5 years, Fair Value 885   885    
Instruments not due at a single maturity date, Fair Value 365   365    
Available-for-sale Securities, Gross Realized Gains 69   136    
Asset-Backed Securities [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 10   10   11
Gross Unrealized Gains     0   0
Gross Unrealized Losses     (2)   (2)
Fair Value 8   8   9
Corporate Debt [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 3,034   3,034   4,254
Gross Unrealized Gains     18   15
Gross Unrealized Losses     (2)   (3)
Fair Value 3,050   3,050   4,266
Financial Institution Instruments [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 4,206   4,206   5,654
Gross Unrealized Gains     5   5
Gross Unrealized Losses     (1)   (1)
Fair Value 4,210   4,210   5,658
Government Debt [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 1,561   1,561   1,932
Gross Unrealized Gains     0   1
Gross Unrealized Losses     (1)   (1)
Fair Value 1,560   1,560   1,932
Marketable Equity Securities [Member]
          
Available-For-Sale Investments [Abstract]          
Gross Unrealized Gains     2,748   2,881
Gross Unrealized Losses     0   0
Adjusted Cost 3,296   3,296   3,340
Fair Value $ 6,044   $ 6,044   $ 6,221