Income Taxes - Schedule of Components of Income From Continuing Operations Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Income Tax Disclosure [Abstract]
Domestic	$ 33.8	$ 255.3	$ 111.4
Foreign	44.8	29.1	112.3
Earnings before income tax and earnings from unconsolidated affiliates	$ 78.6	$ 284.4	$ 223.7

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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