v3.25.1
Goodwill (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Sep. 30, 2024
Goodwill [Abstract]    
Goodwill, gross $ 180.7 $ 180.7
Accumulated impairment losses (114.8) (114.8)
Goodwill $ 65.9 $ 65.9