Annual report pursuant to Section 13 and 15(d)

Gains (Losses) on Equity Investments, Net (Detail)

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Gains (Losses) on Equity Investments, Net (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended 3 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Dec. 28, 2013
Equity Investments [Member]
Dec. 29, 2012
Equity Investments [Member]
Dec. 31, 2011
Equity Investments [Member]
Sep. 28, 2013
Interest In Clearwire, LLC And Shares In Clearwire Corporation [Member]
Schedule Of Investment Type [Line Items]              
Gain (Loss) On Sale Of Combined Investment             $ 439
Gains (Losses) on Equity Investments, Net Detail [Abstract]              
Share of equity method investee losses, net (69) (81) (204)        
Impairment charges (123) (154) (132)        
Gains on sales, net       515 183 303  
Dividends 46 0 0        
Other, net 102 193 145        
Total gains (losses) on equity investments, net $ 471 $ 141 $ 112