Segment Data (Schedule of Supplemental Product Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from External Customer [Line Items]
Net sales	$ 647.8	$ 650.0	$ 1,736.1	$ 1,717.5
Razors and blades
Revenue from External Customer [Line Items]
Net sales	287.4	291.2	822.7	816.6
Tampons, pads and liners
Revenue from External Customer [Line Items]
Net sales	74.6	81.0	216.9	242.0
Sun care products
Revenue from External Customer [Line Items]
Net sales	191.3	184.2	417.3	385.8
Grooming products
Revenue from External Customer [Line Items]
Net sales	43.5	38.2	135.3	123.5
Wipes and other skin care products
Revenue from External Customer [Line Items]
Net sales	22.1	22.5	55.5	58.2
Shaving gels and creams
Revenue from External Customer [Line Items]
Net sales	$ 28.9	$ 32.9	$ 88.4	$ 91.4