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 9 Months Ended 12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Dec. 29, 2012
Available-For-Sale Investments [Abstract]          
Gross Unrealized Gains $ 3,205       $ 1,079
Gross Unrealized Losses (9)       (5)
Fair Value 11,693   11,693    
Adjusted Cost, Total 15,011   15,011   12,927
Fair Value, Total 18,207   18,207   14,001
Due in 1 year or less, Cost 9,130   9,130    
Due in 1-2 years, Cost 1,129   1,129    
Due in 2-5 years, Cost 373   373    
Instruments not due at a single maturity date, Cost 1,050   1,050    
Cost, Total 11,682   11,682    
Due in 1 year or less, Fair Value 9,137   9,137    
Due in 1-2 years, Fair Value 1,137   1,137    
Due in 2-5 years, Fair Value 372   372    
Instruments not due at a single maturity date, Fair Value 1,047   1,047    
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 266 1,500 864 2,100  
Available-for-sale Securities, Gross Realized Gains 134 66 143 110  
Asset-Backed Securities [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 11   11   14
Gross Unrealized Gains 0       0
Gross Unrealized Losses (2)       (3)
Fair Value 9   9   11
Bank Deposits [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 2,634   2,634   1,417
Gross Unrealized Gains 4       1
Gross Unrealized Losses (1)       0
Fair Value 2,637   2,637   1,418
Commercial Paper [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 4,658   4,658   4,184
Gross Unrealized Gains 0       1
Gross Unrealized Losses 0       0
Fair Value 4,658   4,658   4,185
Corporate Bonds [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 2,300   2,300   635
Gross Unrealized Gains 15       8
Gross Unrealized Losses (3)       (1)
Fair Value 2,312   2,312   642
Government Bonds [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 1,524   1,524   2,235
Gross Unrealized Gains 0       0
Gross Unrealized Losses (1)       0
Fair Value 1,523   1,523   2,235
Marketable Equity Securities [Member]
          
Available-For-Sale Investments [Abstract]          
Gross Unrealized Gains 3,186       1,069
Gross Unrealized Losses (1)       (1)
Adjusted Cost 3,329   3,329   3,356
Fair Value 6,514   6,514   4,424
Money Market Fund Deposits [Member]
          
Available-For-Sale Investments [Abstract]          
Adjusted Cost 555   555   1,086
Gross Unrealized Gains 0       0
Gross Unrealized Losses (1)       0
Fair Value 554   554   1,086
Clearwire Corportation [Member]
          
Available-For-Sale Investments [Abstract]          
Proceeds from Sale, Maturity and Collection of Investments 142        
Gain (Loss) On Sale Of Combined Investment $ 111