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Supplemental Operations and Cash Flow Information (Tables)
 12 Months Ended
Sep. 30, 2025
Supplemental Cash Flow Elements [Abstract]  
Supplemental Operations Statement and Cash Flow Information
Year Ended September 30,
202520242023
Advertising expenses$75.2 $61.3 $40.9 
Research and development expenses16.0 14.3 12.0 
Interest paid68.3 59.6 66.6 
Income taxes paid
89.1 93.2 60.9