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Debt and Lines of Credit - Debt (Details) - USD ($) $ in Millions	Aug. 31, 2025	Aug. 31, 2024
Debt Instrument [Line Items]
Total debt outstanding	$ 896.8	$ 496.2
Unsecured Term Loan | 2.150% Senior Unsecured Notes Due December 2030
Debt Instrument [Line Items]
Long-term debt	500.0	500.0
Senior unsecured public notes due December 2030, unamortized discount and deferred costs	$ (3.2)	$ (3.8)

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