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INCOME TAXES (Deferred tax asset and Valuation allowance 2019 correction) (Details) - USD ($) $ in Millions | Oct. 31, 2020 | Oct. 31, 2019
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Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |
Net operating loss, capital loss, and credit carryforwards | $ 286 | $ 283
Tax valuation allowance | 238 | 240
Total deferred tax assets | $ 860 | 878
Revision of Prior Period, Error Correction, Adjustment [Member] |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |
Net operating loss, capital loss, and credit carryforwards |  | 167
Tax valuation allowance |  | 167
Total deferred tax assets |  | $ 0

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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