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Inventories - Inventory Valuation (Detail) - Inventory Valuation Reserve - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2025 | Aug. 31, 2024 | Aug. 31, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at beginning of period | $ 6.3 | $ 17.2 | $ 14.1
Charge to cost of revenue | 3.8 | 1.2 | 5.4
Disposition of inventory | (2.6) | (12.2) | (2.7)
Currency translation effect | 0.2 | 0.1 | 0.4
Balance at end of period | $ 7.7 | $ 6.3 | $ 17.2

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