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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		9 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Segment Reporting [Abstract]
Earnings from operations	$ 92.6	$ 72.3	$ 288.0	$ 200.7
Interest and foreign exchange	13.2	24.7	58.3	72.5
Earnings before income tax and earnings from unconsolidated affiliates	$ 79.4	$ 47.6	$ 229.7	$ 128.2

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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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