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DERIVATIVE INSTRUMENTS (Details 5) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Not designated as hedges, gains (losses) $ 156 $ 266
Interest Rate Contracts | OCI    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Cash flow hedges, recognized in OCI, effective portion, gains (losses) (3) (5)
Interest Rate Contracts | Interest Expense    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Fair value hedges, gains (losses) 114 221
Not designated as hedges, gains (losses) (2) (13)
Interest Rate Contracts | Interest Expense | Cash Flow Hedges Member    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Cash flow hedges, reclassified from OCI, effective portion, gains (losses) (3) (3)
Foreign Exchange Contracts | OCI    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Cash flow hedges, recognized in OCI, effective portion, gains (losses) 2 1
Foreign Exchange Contracts | Cost of Sales    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Not designated as hedges, gains (losses) 33 45
Foreign Exchange Contracts | Other Operating Expense    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Not designated as hedges, gains (losses) 125 234
Foreign Exchange Contracts | Other Operating Expense | Cash Flow Hedges Member    
Classification and gains (losses) including accrued interest expense related to derivative instruments    
Cash flow hedges, reclassified from OCI, effective portion, gains (losses) $ 2 $ 1