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SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2023
Share-based compensation disclosures |  |  |
Share-based compensation expense | $ 129 | $ 130 | $ 112
Share-based Payment Arrangement, Expensed and Capitalized, Amount |  |  |
Share-based compensation expense | 0 | 0 |
Cost of Product and Services |  |  |
Share-based compensation disclosures |  |  |
Share-based compensation expense | 44 | 41 | 34
Research and Development |  |  |
Share-based compensation disclosures |  |  |
Share-based compensation expense | 15 | 16 | 13
Selling, General and Administrative |  |  |
Share-based compensation disclosures |  |  |
Share-based compensation expense | $ 70 | $ 73 | $ 65

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