Quarterly report pursuant to Section 13 or 15(d)

Employee Equity Incentive Plans (Detail)

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Employee Equity Incentive Plans (Detail) (USD $)
Share data 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
Dec. 31, 2011
Employee Equity Incentive Plans, (Textual) (Details) [Abstract]          
Share-based Compensation $ 276,000,000 $ 250,000,000 $ 830,000,000 $ 812,000,000  
Stock Option Activity [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value     493,000,000    
Restricted Stock Units (RSUs) [Member]
         
Restricted Stock Units, Stock Options, And Stock Purchase Plan Estimated Values And Weighted Average Assumptions [Abstract]          
Risk-free interest rate 0.30% 0.50% 0.30% 0.70%  
Dividend yield 3.50% 3.60% 3.30% 3.40%  
Volatility (in decimal ratio) 27.00% 26.00% 26.00% 27.00%  
Restricted Stock Unit Activity [Abstract]          
Number of RSUs outstanding, beginning balance     107.0    
Number of RSUs granted     49.1    
Number of RSUs vested     (40.0)    
Number of RSUs forfeited     (3.5)    
Number of RSUs outstanding, ending balance 112.6   112.6    
Weighted-average grant date fair value of RSU balance (in dollars per share) $ 21.99   $ 21.99   $ 19.18
Weighted-average grant date fair value of granted RSUs (in dollars per share) $ 23.77 $ 21.37 $ 25.42 $ 19.80  
Weighted-average grant date fair value of vested RSUs (in dollars per share)     $ 18.81    
Weighted-average grant date fair value of forfeited RSUs (in dollars per share)     $ 20.58    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value     1,100,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Intrinsic Value Amount     752,000,000    
Stock Option Awards [Member]
         
Restricted Stock Units, Stock Options, And Stock Purchase Plan Estimated Values And Weighted Average Assumptions [Abstract]          
Volatility (in decimal ratio) 27.00% 26.00% 25.00% 26.00%  
Estimated values (in dollars per share) $ 3.97 $ 3.82 $ 4.26 $ 3.88  
Expected life (in years) 5 years 3 months 18 days 5 years 4 months 24 days 5 years 3 months 18 days 5 years 3 months 18 days  
Risk-free interest rate 0.70% 1.70% 1.00% 2.20%  
Dividend yield 3.50% 3.60% 3.20% 3.40%  
Stock Option Activity [Abstract]          
Number of options outstanding, beginning balance     298.3    
Number of options granted     13.2    
Number of options exercised     (78.5)    
Number of options cancelled and forfeited     (3.4)    
Number of options expired     (4.7)    
Number of options outstanding, ending balance 224.9   224.9    
Weighted-average exercise price of stock options (in dollars per share) $ 20.16   $ 20.16   $ 20.12
Weighted-average exercise price for stock option grants during the year (in dollars per share)     $ 27.17    
Weighted-average exercise price for stock option exercises during the year (in dollars per share)     $ 20.63    
Weighted-average exercise price for stock option cancellations and forfeitures during the year (in dollars per share)     $ 21.08    
Weighted-average exercise price for stock option expirations during the year (in dollars per share)     $ 28.94    
Options exercisable 140.1   140.1   203.6
Weighted-average exercise price for options exercisable (in dollars per share) $ 19.88   $ 19.88   $ 20.44
Market Based Restricted Stock Units [Member]
         
Restricted Stock Unit Activity [Abstract]          
Number of RSUs outstanding, ending balance 4.0   4.0    
Restricted Stock or Stock Units, 2006 Plan [Member]
         
Employee Equity Incentive Plans, (Textual) (Details) [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 394   394    
2006 Equity Incentive Plan [Member]
         
Employee Equity Incentive Plans, (Textual) (Details) [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 596   596    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 247   247    
Stock Purchase Plan [Member]
         
Employee Equity Incentive Plans, (Textual) (Details) [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 373   373    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 237   237    
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent     85.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period     17.4 18.5  
Employee Purchases, Amount     $ 355,000,000 $ 318,000,000  
Restricted Stock Units, Stock Options, And Stock Purchase Plan Estimated Values And Weighted Average Assumptions [Abstract]          
Volatility (in decimal ratio) 24.00% 28.00% 24.00% 26.00%  
Estimated values (in dollars per share) $ 5.42 $ 4.90 $ 5.47 $ 4.69  
Expected life (in years) 6 months 6 months 6 months 6 months  
Risk-free interest rate 0.20% 0.20% 0.10% 0.20%  
Dividend yield 3.50% 3.70% 3.30% 3.60%