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Segment Information - Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2024 | Aug. 31, 2023 | Aug. 31, 2022
Segment Reporting [Abstract] |  |  |
Earnings from operations | $ 324.5 | $ 176.4 | $ 118.0
Interest and foreign exchange | 100.8 | 85.4 | 57.4
Earnings before income tax and earnings from unconsolidated affiliates | $ 223.7 | $ 91.0 | $ 60.6

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