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NEW ACCOUNTING PRONOUNCEMENTS ASU 2016-09 ADOPTION - textuals (Details)
$ in Millions
9 Months Ended
Jul. 31, 2018
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Excess Tax Benefit from Share-based Compensation, Financing Activities $ 4
Accounting Standards Update 2016-09 [Member]  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets $ 6