v3.25.1
Allowance for Doubtful Accounts - Allowance for Doubtful Accounts (Details)
$ in Millions
6 Months Ended
Mar. 31, 2025
USD ($)
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]  
Balance as of September 30, 2024 $ 51.9
Provision for bad debts 1.5
Allowance charge-offs (4.1)
Other (0.1)
Balance as of March 31, 2025 49.2
Bad debt expense $ 0.4