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Special Charges - Schedule of Details of Special Charges Incurred (Details) - USD ($)
$ in Millions
12 Months Ended
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2022
Restructuring and Related Activities [Abstract]      
Trade name impairment charges   $ 14.0  
Severance and employee-related costs   7.7  
Operating lease asset group impairment charge   4.3  
Other restructuring costs   0.9  
Total special charges $ 0.0 $ 26.9 $ 0.0