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SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2024 | Apr. 30, 2023
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | $ 32 | $ 25 | $ 76 | $ 69
Cost of Products and Services |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | 9 | 7 | 23 | 20
Research and Development |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | 3 | 3 | 9 | 8
Selling, General and Administrative |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs |  |  |  |
Share-based compensation expense | $ 20 | $ 15 | $ 44 | $ 41

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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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