Segment Data (Schedule of Supplemental Product Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue from External Customer [Line Items]
Net sales	$ 463.3	$ 451.1
Razors and blades
Revenue from External Customer [Line Items]
Net sales	255.7	246.3
Tampons, pads and liners
Revenue from External Customer [Line Items]
Net sales	72.4	69.0
Sun care products
Revenue from External Customer [Line Items]
Net sales	40.2	28.8
Grooming products
Revenue from External Customer [Line Items]
Net sales	46.3	43.1
Wipes and other skin care products
Revenue from External Customer [Line Items]
Net sales	18.3	31.1
Shaving gels and creams
Revenue from External Customer [Line Items]
Net sales	$ 30.4	$ 32.8