Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans Summary of Stock Option Transactions for All Stock Option Plans (Details)

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Employee Benefit Plans Summary of Stock Option Transactions for All Stock Option Plans (Details) (Stock Options [Member], USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Sep. 30, 2012
Sep. 25, 2011
Sep. 26, 2010
Stock Options [Member]
      
Summary of Stock Option Transactions for All Stock Option Plans [Roll Forward]      
Options outstanding - Beginning balance 149,252    
Options granted 381    
Options cancelled/forfeited/expired (1,395)    
Options exercised (41,637)    
Options outstanding - Ending balance 106,601 149,252  
Options exercisable at end of period 84,592    
Summary of Stock Option Transactions for All Stock Option Plans [Abstract]      
Total intrinsic value of stock options exercised $ 1,000,000,000 $ 1,100,000,000 $ 208,000,000
Options outstanding at beginning of period, weighted average exercise price $ 39.10    
Options granted, weighted average exercise price $ 57.01    
Options cancelled/forfeited/ expired, weighted average exercise price $ 40.19    
Options exercised, weighted average exercise price $ 37.02    
Options outstanding at end of period, weighted average exercise price $ 39.96 $ 39.10  
Options exercisable at end of period, weighted average exercise price $ 39.73    
Options outstanding at end of period, average remaining contractual term (years) 4 years 10 months 24 days    
Options exercisable at end of period, average remaining contractual term (years) 4 years 5 months 21 days    
Options outstanding at end of period, aggregate intrinsic value 2,400,000,000    
Options exercisable at end of period, aggregate intrinsic value 1,900,000,000    
Employee Service Share-Based Compensation, Aggregate Disclosures [Abstract]      
Vesting period 5 years 0 months 0 days    
Stock option exercisable period after grant date exercisable for up to 10 years from the grant date    
Unrecognized compensation expense related to nonvested awards 274,000,000    
Weighted average period over which unrecognized compensation expense related to nonvested awards is expected to be recognized 1 year 3 months 18 days    
Cash received from exercise of stock options 1,500,000,000 2,500,000,000 565,000,000
Tax benefit related to exercise of stock options $ 438,000,000 $ 421,000,000 $ 80,000,000