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FAIR VALUE MEASUREMENTS - Non marketable securities (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2023
Fair Value Disclosures [Abstract] |  |  |
Upward Adjustment, Annual Amount | $ 2 | $ 2 | $ 0
Downward Adjustment, Annual Amount | 41 | 1 | 26
Impairments in non-marketable securities without readily determinable fair value | 15 | 11 | $ 0
Upward Adjustment, Cumulative Amount | 42 | 40 |
Downward Adjustment, Cumulative Amount | 71 | 30 |
Impairment Loss, Cumulative Amount | 26 | 11 |
Equity investments - without readily determinable fair value | $ 55 | $ 101 |

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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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