Segment Data (Schedule of Supplemental Product Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenue from External Customer [Line Items]
Net sales	$ 488.9	$ 469.1
Razors and blades
Revenue from External Customer [Line Items]
Net sales	270.5	247.0
Tampons, pads and liners
Revenue from External Customer [Line Items]
Net sales	71.8	80.9
Sun care products
Revenue from External Customer [Line Items]
Net sales	51.0	47.8
Grooming products
Revenue from External Customer [Line Items]
Net sales	46.8	47.3
Wipes and other skin care products
Revenue from External Customer [Line Items]
Net sales	17.6	17.8
Shaving gels and creams
Revenue from External Customer [Line Items]
Net sales	$ 31.2	$ 28.3