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Fair Value Measurements (Narrative) (Details)
€ in Millions, R in Millions, $ in Millions
12 Months Ended
Aug. 31, 2025
USD ($)
Aug. 31, 2024
USD ($)
Aug. 31, 2023
USD ($)
May 31, 2028
EUR (€)
Feb. 28, 2026
USD ($)
Aug. 31, 2025
ZAR (R)
Carrying amount, long-term debt (including current portion) $ 115.3 $ 115.5        
Fair value of the long-term debt 106.4 105.5        
Notional amount | R           R 143.5
Foreign currency forward contracts resulting in a net loss 0.4          
Foreign translation gains (losses) $ 10.6 $ 1.1 $ 3.3      
Forecast [Member]            
Notional amount       € 163.2 $ 175.0