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INCOME TAXES Income tax contingencies (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2017 | Oct. 31, 2020
Income Tax Contingency [Line Items] |  |
Income taxes and penalties on gains related to IP rights | $ 68 |
Internal Revenue Service (IRS) [Member] |  |
Income Tax Contingency [Line Items] |  |
Open Tax Year Date |  | Nov. 01, 2015
Foreign Tax Authority |  |
Income Tax Contingency [Line Items] |  |
Open Tax Year Date |  | Nov. 01, 2015
Foreign entities [Member] |  |
Income Tax Contingency [Line Items] |  |
Open Tax Year |  | 2008

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