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INCOME TAXES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Apr. 30, 2016
Apr. 30, 2015
Jan. 31, 2015
Income Tax Disclosure          
Effective Income Tax Rate, Percent 22.20% 4.20% 17.40% 11.50%  
Income Tax Expense (Benefit) $ 26 $ 4 $ 45 $ 24  
Net Discrete Tax Expense (Benefit) 3 (13) (3) (16)  
Income Taxes Paid     9    
Prepaid Taxes         $ 3
Internal Revenue Service          
Incremental taxes         $ 12
Internal Revenue Service (IRS)          
Internal Revenue Service          
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions       119  
Tax liability on foreign earnings distributions       99  
U.S. Research & Development Tax Credit Extension          
Income Tax Disclosure          
Discrete Tax Expense (Benefit)     (5) (6)  
Pension Curtailment          
Income Tax Disclosure          
Discrete Tax Expense (Benefit)     6    
Return To Provision Adjustment          
Income Tax Disclosure          
Discrete Tax Expense (Benefit) 7   (9)    
Realization of tax credits [Member]          
Income Tax Disclosure          
Discrete Tax Expense (Benefit) (8)        
Miscellaneous Other Return To Provision Adjustment [Member] [Member]          
Income Tax Disclosure          
Discrete Tax Expense (Benefit) 2        
Other Discrete Items          
Income Tax Disclosure          
Discrete Tax Expense (Benefit) 2 3 $ 2 $ 3  
De-registration of certain foreign branches [Member]          
Income Tax Disclosure          
Discrete Tax Expense (Benefit)   $ (16)      
Out of Period related to Tax Year 2006 | Return To Provision Adjustment          
Income Tax Disclosure          
Discrete Tax Expense (Benefit) $ 5