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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Jun. 25, 2011
Jun. 26, 2010
Jun. 25, 2011
Jun. 26, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Potentially dilutive securities excluded from the computation of diluted earnings per common share because their effect would have been antidilutive 2,000 220,000 206,000 498,000
Apple iPhone
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Estimate of the selling price for software upgrade right (USD/unit sold)     $ 16  
Estimated life of hardware device (Months) 24   24  
Apple iPad
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Estimate of the selling price for software upgrade right (USD/unit sold)     16  
Estimated life of hardware device (Months) 24   24  
Apple iPod touch
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Estimate of the selling price for software upgrade right (USD/unit sold)     11  
Estimated life of hardware device (Months) 24   24  
Apple Mac
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Estimate of the selling price for software upgrade right (USD/unit sold)     22  
Estimated life of hardware device (Months) 48   48  
Apple TV
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Estimate of the selling price for software upgrade right (USD/unit sold)     $ 5  
Estimated life of hardware device (Months) 24   24  
Apple Mac OS and iLife software | Beginning in July 2011
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Estimated life of hardware device (Months) 36   36