Goodwill and Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Sep. 30, 2024
Goodwill [Line Items]
Goodwill, Gross	$ 1,699.7	$ 1,709.6
Accumulated goodwill impairment loss	371.0	371.0
Goodwill [Roll Forward]
Beginning balance	1,338.6
Cumulative translation adjustment	9.9
Ending balance	1,328.7
Wet Shave
Goodwill [Line Items]
Goodwill, Gross	1,139.7	1,146.0
Accumulated goodwill impairment loss	369.0	369.0
Goodwill [Roll Forward]
Beginning balance	777.0
Cumulative translation adjustment	6.3
Ending balance	770.7
Sun and Skin Care
Goodwill [Line Items]
Goodwill, Gross	356.3	357.4
Accumulated goodwill impairment loss	2.0	2.0
Goodwill [Roll Forward]
Beginning balance	355.4
Cumulative translation adjustment	1.1
Ending balance	354.3
Feminine Care
Goodwill [Line Items]
Goodwill, Gross	203.7	206.2
Accumulated goodwill impairment loss	0.0	$ 0.0
Goodwill [Roll Forward]
Beginning balance	206.2
Cumulative translation adjustment	2.5
Ending balance	$ 203.7