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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	3 Months Ended		6 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Segment Reporting [Abstract]
Earnings from operations	$ 83.6	$ 63.5	$ 195.4	$ 128.4
Interest and foreign exchange	21.7	24.6	45.1	47.8
Earnings before income tax and earnings from unconsolidated affiliates	$ 61.9	$ 38.9	$ 150.3	$ 80.6

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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The net result for the period of deducting operating expenses from operating revenues.

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