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FAIR VALUE MEASUREMENTS, Fair value of assets and liabilities measured on a recurring basis (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Millions, unless otherwise specified
Apr. 30, 2013
Oct. 31, 2012
Assets, Short-term [Abstract]    
Cash equivalents (money market funds) $ 1,878 $ 1,834
Derivative instruments (foreign exchange contracts) 23 7
Assets, Long-term [Abstract]    
Trading securities 48 50
Available-for-sale investments 18  
Total assets measured at fair value 1,967 1,891
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 5 6
Long-term    
Deferred compensation liability 47 48
Total liabilities measured at fair value 52 54
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
   
Assets, Short-term [Abstract]    
Cash equivalents (money market funds) 1,878 1,834
Derivative instruments (foreign exchange contracts) 0 0
Assets, Long-term [Abstract]    
Trading securities 48 50
Available-for-sale investments 18  
Total assets measured at fair value 1,944 1,884
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 0 0
Long-term    
Deferred compensation liability 0 0
Total liabilities measured at fair value 0 0
Significant Other Observable Inputs (Level 2) [Member]
   
Assets, Short-term [Abstract]    
Cash equivalents (money market funds) 0 0
Derivative instruments (foreign exchange contracts) 23 7
Assets, Long-term [Abstract]    
Trading securities 0 0
Available-for-sale investments 0  
Total assets measured at fair value 23 7
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 5 6
Long-term    
Deferred compensation liability 47 48
Total liabilities measured at fair value 52 54
Significant Unobservable Inputs (Level 3) [Member]
   
Assets, Short-term [Abstract]    
Cash equivalents (money market funds) 0 0
Derivative instruments (foreign exchange contracts) 0 0
Assets, Long-term [Abstract]    
Trading securities 0 0
Available-for-sale investments 0  
Total assets measured at fair value 0 0
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 0 0
Long-term    
Deferred compensation liability 0 0
Total liabilities measured at fair value $ 0 $ 0