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Debt and Lines of Credit - Debt (Details) - USD ($) $ in Millions	Aug. 31, 2024	Aug. 31, 2023
Debt Instrument [Line Items]
Total debt	$ 496.2	$ 495.6
Unsecured Term Loan | 2.150% Senior Unsecured Notes Due December 2030
Debt Instrument [Line Items]
Senior unsecured public notes due December 2030, principal	500.0	500.0
Senior unsecured public notes due December 2030, unamortized discount and deferred costs	$ (3.8)	$ (4.4)

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