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Stock-Based Compensation Plans - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Aug. 31, 2014
Sep. 01, 2013
Dec. 10, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share Based Compensation Arrangement By Share Based Payment Number Of Years Of Service 25 years 0 months 0 days    
Additional number of shares authorized 16,000,000    
Number of stock options outstanding 976,000 1,947,000 2,905,000
Number of RSUs outstanding     9,676,000
Additional shares available to be granted     1,362,000
Mandatory proportional adjustment to stock options   221,000  
Mandatory proportional adjustment to restricted stock units   732,000  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit $ 40.69    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit $ 43.17    
Restricted Stock Units (RSUs)
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Additional number of shares authorized 9,143,000    
Number of RSUs outstanding 9,117,000 10,081,000  
Time-based RSUs awards outstanding 8,505,000    
Number of shares available to be granted as RSUs 7,972,000    
Additional shares available to be granted     778,000
Performance-based RSUs awards outstanding 612,000    
Outstanding performance-based RSUs awards to be granted 269,000    
Unrecognized compensation cost $ 548    
Weighted-average recognition period 1 year 7 months 25 days    
RSUs vested, but not yet delivered (shares) 2,811,000    
Fourth Restated 2002 Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Portion of each share issued counted towards limit of shares available 1.75    
Employees [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years    
Non Employee Directors [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years