Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2021	Sep. 30, 2020
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 602.9	$ 601.4
Indefinite-lived intangible assets, increase	1.5
Wet Shave
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	183.9	183.1
Sun and Skin Care
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	389.1	388.4
Feminine Care
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 29.9	$ 29.9