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 12 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Dec. 28, 2013
Available-For-Sale Investments [Abstract]      
Gross Unrealized Gains $ 2,786   $ 2,902
Gross Unrealized Losses (5)   (7)
Fair Value 11,069    
Adjusted Cost, Total 14,373   15,191
Fair Value, Total 17,154   18,086
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 174 300  
Due in 1 year or less, Cost 8,703    
Due in 1-2 years, Cost 1,007    
Due in 2-5 years, Cost 750    
Instruments not due at a single maturity date, Cost 592    
Cost, Total 11,052    
Due in 1 year or less, Fair Value 8,722    
Due in 1-2 years, Fair Value 1,006    
Due in 2-5 years, Fair Value 751    
Instruments not due at a single maturity date, Fair Value 590    
Available-for-sale Securities, Gross Realized Gains 67    
Asset-Backed Securities [Member]
      
Available-For-Sale Investments [Abstract]      
Adjusted Cost 10   11
Gross Unrealized Gains 1   0
Gross Unrealized Losses (2)   (2)
Fair Value 9   9
Corporate Debt [Member]
      
Available-For-Sale Investments [Abstract]      
Adjusted Cost 4,482   4,254
Gross Unrealized Gains 15   15
Gross Unrealized Losses (2)   (3)
Fair Value 4,495   4,266
Financial Institution Instruments [Member]
      
Available-For-Sale Investments [Abstract]      
Adjusted Cost 4,874   5,654
Gross Unrealized Gains 6   5
Gross Unrealized Losses (1)   (1)
Fair Value 4,879   5,658
Government Debt [Member]
      
Available-For-Sale Investments [Abstract]      
Adjusted Cost 1,686   1,932
Gross Unrealized Gains 0   1
Gross Unrealized Losses 0   (1)
Fair Value 1,686   1,932
Marketable Equity Securities [Member]
      
Available-For-Sale Investments [Abstract]      
Gross Unrealized Gains 2,764   2,881
Gross Unrealized Losses 0   0
Adjusted Cost 3,321   3,340
Fair Value $ 6,085   $ 6,221