Goodwill and Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2023	Sep. 30, 2022
Goodwill [Line Items]
Goodwill, Gross	$ 1,707.1	$ 1,693.2
Accumulated goodwill impairment loss	371.0	371.0
Goodwill [Roll Forward]
Beginning balance	1,322.2
Cumulative translation adjustment	(13.9)
Ending balance	1,336.1
Wet Shave
Goodwill [Line Items]
Goodwill, Gross	1,143.6	1,133.5
Accumulated goodwill impairment loss	369.0	369.0
Goodwill [Roll Forward]
Beginning balance	764.5
Cumulative translation adjustment	(10.1)
Ending balance	774.6
Sun and Skin Care
Goodwill [Line Items]
Goodwill, Gross	356.5	354.5
Accumulated goodwill impairment loss	2.0	2.0
Goodwill [Roll Forward]
Beginning balance	352.5
Cumulative translation adjustment	(2.0)
Ending balance	354.5
Feminine Care
Goodwill [Line Items]
Goodwill, Gross	207.0	205.2
Accumulated goodwill impairment loss	0.0	$ 0.0
Goodwill [Roll Forward]
Beginning balance	205.2
Cumulative translation adjustment	(1.8)
Ending balance	$ 207.0