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Shareholders' Equity and Share-based Compensation - Additional Information (Detail) (USD $)
 3 Months Ended 9 Months Ended
Jun. 30, 2012
Jun. 25, 2011
Jun. 30, 2012
Jun. 25, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Preferred stock, shares authorized 5,000,000   5,000,000  
Fair value of vested RSUs as of the vesting date $ 1,500,000,000 $ 637,000,000 $ 3,100,000,000 $ 1,400,000,000
Total intrinsic value of options at the time of exercise 332,000,000 248,000,000 1,500,000,000 2,100,000,000
Shares reserved for future issuance under the Company's stock plans (in shares) 38,200,000   38,200,000  
Options assumed     41,000  
Weighted-average grant date fair value     $ 400.79  
Weighted-average fair value of stock purchase rights per share $ 114.01 $ 72.63 $ 102.41 $ 67.70
Income tax benefit related to share-based compensation expense 131,000,000 113,000,000 432,000,000 349,000,000
Total unrecognized compensation cost on stock options and RSUs expected to vest 4,300,000,000   4,300,000,000  
Total unrecognized compensation cost on stock options and RSUs expected to vest, weighted-average recognition period (in years)     3 years 146 days  
Quarterly dividends per share declared, beginning in the fourth quarter of 2012     $ 2.65  
Maximum amount authorized for the repurchase of common stock     $ 10,000,000,000  
Number of years expected to execute the repurchase program     3 years