Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Aug. 31, 2024	Aug. 31, 2023
Standby Letters of Credit
Commitments and Contingencies Disclosure [Abstract]
Outstanding letters of credit	$ 4.4	$ 8.6
Loss Contingencies [Line Items]
Outstanding letters of credit	4.4	$ 8.6
Surety Bond
Commitments and Contingencies Disclosure [Abstract]
Outstanding letters of credit	3.8
Loss Contingencies [Line Items]
Outstanding letters of credit	$ 3.8