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FAIR VALUE MEASUREMENTS - Reconciliation of Beginning and Ending Level 3 Contingent Consideration Liability (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2023 | Apr. 30, 2022
Fair Value Disclosures [Abstract] |  |  |  |
Fair Value Contingent Consideration, Beginning Balance | $ 3 | $ 92 | $ 67 | $ 89
Additions to contingent consideration (including measurement period adjustment) | 5 | 3 | 5 | 3
Payments of contingent consideration | 0 | 0 | (65) | 0
Change in fair value (included within SG&A) | 0 | (28) | 1 | (25)
Fair Value Contingent Consideration, Ending Balance | $ 8 | $ 67 | $ 8 | $ 67

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- Definition Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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