v3.25.1
Goodwill and Intangible Assets (Schedule of Goodwill) (Details) - USD ($)
$ in Millions
6 Months Ended
Mar. 31, 2025
Sep. 30, 2024
Goodwill [Line Items]    
Goodwill, Gross $ 1,703.7 $ 1,709.6
Accumulated goodwill impairment loss 371.0 371.0
Goodwill [Roll Forward]    
Beginning balance 1,338.6  
Cumulative translation adjustment 5.9  
Ending balance 1,332.7  
Wet Shave    
Goodwill [Line Items]    
Goodwill, Gross 1,143.1 1,146.0
Accumulated goodwill impairment loss 369.0 369.0
Goodwill [Roll Forward]    
Beginning balance 777.0  
Cumulative translation adjustment 2.9  
Ending balance 774.1  
Sun and Skin Care    
Goodwill [Line Items]    
Goodwill, Gross 356.8 357.4
Accumulated goodwill impairment loss 2.0 2.0
Goodwill [Roll Forward]    
Beginning balance 355.4  
Cumulative translation adjustment 0.6  
Ending balance 354.8  
Feminine Care    
Goodwill [Line Items]    
Goodwill, Gross 203.8 206.2
Accumulated goodwill impairment loss 0.0 $ 0.0
Goodwill [Roll Forward]    
Beginning balance 206.2  
Cumulative translation adjustment 2.4  
Ending balance $ 203.8