v3.25.2
Commitments and Contingencies (Detail) - USD ($)
$ in Millions
Jun. 30, 2025
Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]    
Letters of Credit Outstanding, Amount $ 37.2  
Special Assessment Bond 808.5  
Land purchase contract deposits 32.8 $ 23.4
Purchase Obligation $ 854.6