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 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Net income available to common stockholders $ 2,972 $ 3,468 $ 8,537 $ 9,582
Weighted average common shares outstanding-basic 4,996 5,194 5,006 5,317
Dilutive effect of employee equity incentive plans (shares) 93 93 109 96
Dilutive effect of convertible debt (shares) 64 53 66 53
Weighted average common shares outstanding-diluted 5,153 5,340 5,181 5,466
Basic earnings per common share (in dollars per share) $ 0.59 $ 0.67 $ 1.71 $ 1.80
Diluted earnings per common share (in dollars per share) $ 0.58 $ 0.65 $ 1.65 $ 1.75
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) 24 104 18 108