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FAIR VALUE MEASUREMENTS, Non Marketable Securities (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2024 | Apr. 30, 2023
Fair Value Disclosures [Abstract] |  |  |  |
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount | $ 0 | $ 0 | $ 0 | $ 0
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount | 0 | 0 | 0 | 0
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount | 0 | 0 | 0 | 0
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount | 39 | 35 | 39 | 35
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount | 30 | 0 | 30 | 0
Non-marketable equity securities carrying amount | $ 108 | $ 121 | $ 108 | $ 121

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- Definition Amount of loss from downward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479536/321-10-50-3 + Details
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- Definition Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479536/321-10-50-3 + Details
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