FAIR VALUE MEASUREMENTS - Non marketable securities (Details) - USD ($) $ in Millions	12 Months Ended
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

Amount of investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

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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

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Amount of cumulative loss from downward price adjustment on investment in equity security without readily determinable fair value.

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Amount of impairment loss on investment in equity security without readily determinable fair value.

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Amount of cumulative impairment loss on investment in equity security without readily determinable fair value.

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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

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Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value.

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