v3.26.1
Accounts Receivable, Net - Additional Information (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Sep. 30, 2025
Receivables [Abstract]    
Accounts receivable $ 432.0 $ 393.1
Allowance for doubtful accounts 9.8 9.8
Amounts of retention on incomplete project $ 54.3 $ 58.3