Segment Data (Schedule of Supplemental Product Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Revenue from External Customer [Line Items]
Net sales	$ 422.8	$ 415.1
Razors and blades
Revenue from External Customer [Line Items]
Net sales	259.0	267.4
Sun care products
Revenue from External Customer [Line Items]
Net sales	57.2	47.4
Grooming products
Revenue from External Customer [Line Items]
Net sales	57.3	53.0
Wipes and other skin care products
Revenue from External Customer [Line Items]
Net sales	17.0	20.2
Shaving gels and creams
Revenue from External Customer [Line Items]
Net sales	$ 32.3	$ 27.1