Annual report pursuant to Section 13 and 15(d)

The Company and Its Significant Accounting Policies (Details)

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The Company and Its Significant Accounting Policies (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 25, 2011
Sep. 26, 2010
Notes to Financial Statements [Abstract]      
Number of weeks in a fiscal period 53 weeks 52 weeks 52 weeks
Securities Lending [Abstract]      
Marketable securities loaned under the Company's securities lending program $ 98 $ 44  
Collateral received for marketable securities loaned 100 46  
Revenue Recognition [Abstract]      
Revenues from services less than 10% less than 10% less than 10%
License fees recognized over estimated period of license benefit, duration 5 to 15 years    
Share-Based Compensation [Abstract]      
Weighted-average estimated fair value of employee stock options granted, per share $ 14.70 $ 13.17 $ 12.40
Period during which the term structure of volatility is used (in years) 2 years 0 months 0 days    
Weighted-average expected life of employee stock options granted, in years 5 years 3 months 18 days 5 years 7 months 6 days 5 years 6 months 0 days
Weighted-average estimated fair values of employee RSUs granted, per share $ 58.57 $ 50.14 $ 35.61
Pre-vesting forfeiture rate 3.00% 3.00% 3.00%
Share-based compensation expense related to share-based awards granted 270 165 119
Incremental tax benefits from stock options exercised and restricted stock units vested 168 183 45
Foreign Currency [Abstract]      
Net foreign currency transaction losses 7 8 6
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]      
Accumulated other-than-temporary losses on marketable debt securities related to factors other than credit, net of income taxes 7    
Foreign currency contract [Member] | Designated as hedging instrument [Member]
     
Derivatives, Fair Value [Line Items]      
Derivative maturity, low end of range 0 years 1 month 0 days    
Derivative maturity, high end of maturity range 0 years 26 months 0 days    
Derivative asset, fair value recorded in total assets 11    
Derivative liability, fair value recorded in total assets   17  
Derivative asset, fair value recorded in total liabilities 6    
Derivative liability, fair value recorded in total liabilities   42  
Foreign currency contract [Member] | Not designated as hedging instrument [Member]
     
Derivatives, Fair Value [Line Items]      
Derivative maturity, high end of maturity range 29 years 0 months 0 days    
Derivative asset, fair value recorded in total assets 5 0  
Derivative asset, fair value recorded in total liabilities 5 0  
Foreign currency forward contract [Member] | Designated as hedging instrument [Member]
     
Derivatives, Fair Value [Line Items]      
Derivative asset, fair value recorded in total assets   7  
Put option in connection with stock repurchase program [Member] | Not designated as hedging instrument [Member]
     
Derivatives, Fair Value [Line Items]      
Derivative liability, fair value recorded in total liabilities $ 0 $ 80