Segment Data (Schedule of Supplemental Product Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue from External Customer [Line Items]
Net sales	$ 627.2	$ 647.8	$ 1,686.3	$ 1,736.1
Razors and blades
Revenue from External Customer [Line Items]
Net sales	287.8	287.4	814.2	822.7
Tampons, pads and liners
Revenue from External Customer [Line Items]
Net sales	66.8	74.6	194.2	216.9
Sun care products
Revenue from External Customer [Line Items]
Net sales	175.1	191.3	386.7	417.3
Grooming products
Revenue from External Customer [Line Items]
Net sales	46.5	43.5	148.3	135.3
Wipes and other skin care products
Revenue from External Customer [Line Items]
Net sales	21.8	22.1	60.1	55.5
Shaving gels and creams
Revenue from External Customer [Line Items]
Net sales	$ 29.2	$ 28.9	$ 82.8	$ 88.4