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OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Millions
Jul. 31, 2017
Oct. 31, 2016
Variable Interest Entity Disclosures    
Carrying value of investments in VIE's $ 80  
Maximum exposure of investments in VIE's 80  
Fair Value of Financial Instruments    
Fair value of long term debt in excess of carrying value $ 169 $ 104