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Impairment and Restructuring - Impairment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2025 | Jul. 31, 2025 | Jul. 31, 2024
Impairment and Restructuring |  |  |
Impairment charges | $ 64,467 | $ 64,467 | $ 1,107
Impairment of property, plant and equipment | 42,100 | $ 42,100 |
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Impairment charges |
Impairment of inventory | 9,000 | $ 9,000 |
Impairment of IPR&D | 9,300 | 9,300 |
Impairment of goodwill | $ 4,100 | $ 4,100 |

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