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SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Apr. 30, 2025 | Apr. 30, 2024 | Apr. 30, 2025 | Apr. 30, 2024
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | $ 30 | $ 32 | $ 71 | $ 76
Cost of Products and Services |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | 10 | 9 | 22 | 23
Research and Development |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | 3 | 3 | 8 | 9
Selling, General and Administrative |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | $ 17 | $ 20 | $ 41 | $ 44

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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