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FAIR VALUE OF FINANCIAL INSTRUMENTS - Narrative (Details) - Common Stock - Energizer - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2022
Fair Value Of Financial Instruments [Line Items]
Stock consideration, including discontinued operations (in shares)	1.7
Cash proceeds, stock consideration	$ 73.1	$ 147.1
Stock consideration (in shares)		3.6
Shares of common stock held (in shares)			0.0

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