Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 598.2	$ 664.3
Indefinite-lived intangible assets, increase	(66.1)
Wet Shave
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	179.7	177.7
Impairment loss		369.0
Sun and Skin Care
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	388.6	387.9
Feminine Care
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	29.9	29.9
All Other
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 0.0	$ 68.8