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Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Weighted average discount rate (percent) 3.70% 3.50%  
Weighted average remaining lease term 5 years    
Cash paid for operating lease liabilities $ 22.9 $ 20.1 $ 18.5
ROU assets obtained in exchange for lease liabilities $ 3.4 29.9  
Operating lease asset group impairment charge   4.3  
Level 3 | Fair value measured on nonrecurring basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Operating lease asset group impairment charge   $ 4.3