FAIR VALUE MEASUREMENTS - Equity Securities and Investments (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
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| Fair Value Disclosures [Abstract] | ||||
| Net gain (loss) on equity securities | $ (1) | $ (28) | $ 1 | $ (27) |
| Net gain (loss) on equity securities sold in the period | 0 | 0 | 0 | 0 |
| Unrealized gain (loss) on equity securities | (1) | (28) | 1 | (27) |
| Impairment of investments, Annual Amount | $ 0 | $ 15 | $ 0 | $ 15 |
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- Definition Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of impairment loss on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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