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INCOME TAXES Income tax contingencies (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2017 | Oct. 31, 2019 | Oct. 31, 2017
Income Tax Contingency [Line Items] |  |  |
Income taxes and penalties on gains related to IP rights | $ 68 |  | $ 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, 2014 |
Foreign entities [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Open Tax Year |  | 2008 |

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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=117330534&loc=d3e28511-109314 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=117330534&loc=d3e28446-109314 + Details
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