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Segment Information - Reconciliation of Earnings (Loss) from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 29, 2024 | Feb. 28, 2023 | Feb. 29, 2024 | Feb. 28, 2023
Segment Reporting [Abstract] |  |  |  |
Earnings from operations | $ 63.5 | $ 67.4 | $ 128.4 | $ 62.6
Interest and foreign exchange | 24.6 | 21.6 | 47.8 | 41.2
Earnings before income tax and earnings from unconsolidated affiliates | $ 38.9 | $ 45.8 | $ 80.6 | $ 21.4

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