Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Aug. 31, 2025	Aug. 31, 2024
Standby Letters of Credit
Commitments and Contingencies Disclosure [Abstract]
Outstanding letters of credit	$ 5.9	$ 4.4
Loss Contingencies [Line Items]
Outstanding letters of credit	5.9	4.4
Surety Bond
Commitments and Contingencies Disclosure [Abstract]
Outstanding letters of credit	4.8	3.8
Loss Contingencies [Line Items]
Outstanding letters of credit	$ 4.8	$ 3.8