Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Detail)

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Earnings Per Share (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Earnings Per Share [Abstract]        
Net income available to common stockholders $ 2,000 $ 2,827 $ 4,045 $ 5,565
Weighted average common shares outstanding—basic 4,978 5,022 4,963 5,010
Dilutive effect of employee equity incentive plans (shares) 67 108 72 118
Dilutive effect of convertible debt (shares) 61 69 58 68
Weighted average common shares outstanding—diluted 5,106 5,199 5,093 5,196
Basic earnings per common share (in dollars per share) $ 0.40 $ 0.56 $ 0.82 $ 1.11
Diluted earnings per common share (in dollars per share) $ 0.39 $ 0.54 $ 0.79 $ 1.07
Stock Options [Member]
       
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (shares) 51 10 56 15