Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Sep. 28, 2013
Gains (Losses) on Equity Investments, Net Detail [Abstract]        
Share of equity method investee losses, net $ (17) $ (14) $ (42) $ (56)
Impairment charges (33) (33) (108) (110)
Dividends 1 1 54 46
Other, net 84 26 127 71
Total gains (losses) on equity investments, net 35 452 178 437
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 373 359 1,200 1,200
Available-for-sale Securities, Gross Realized Gains 0 134 136 143
Clearwire Corporation [Member] | Marketable Equity Securities [Member]
       
Gains (Losses) on Equity Investments, Net Detail [Abstract]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds   142    
Available-for-sale Securities, Gross Realized Gains   111    
Clearwire, LLC [Member] | Equity Method Investments [Member]
       
Gains (Losses) on Equity Investments, Net Detail [Abstract]        
Proceeds from Sale, Maturity and Collection of Investments   328    
Equity Method Investment, Realized Gain (Loss) on Disposal   328    
Interest In Clearwire, LLC And Shares In Clearwire Corporation [Member]
       
Gains (Losses) on Equity Investments, Net Detail [Abstract]        
Gain (Loss) On Sale Of Combined Investment   439    
Equity Investments [Member]
       
Gains (Losses) on Equity Investments, Net Detail [Abstract]        
Gains on sales, net $ 0 $ 472 $ 147 $ 486