Segment Data (Schedule of Supplemental Product Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenue from External Customer [Line Items]
Net sales	$ 478.4	$ 488.9
Razors and blades
Revenue from External Customer [Line Items]
Net sales	267.4	270.5
Tampons, pads and liners
Revenue from External Customer [Line Items]
Net sales	63.3	71.8
Sun care products
Revenue from External Customer [Line Items]
Net sales	47.4	51.0
Grooming products
Revenue from External Customer [Line Items]
Net sales	53.0	46.8
Wipes and other skin care products
Revenue from External Customer [Line Items]
Net sales	20.2	17.6
Shaving gels and creams
Revenue from External Customer [Line Items]
Net sales	$ 27.1	$ 31.2