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ACQUISITIONS AND DIVESTITURES - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Oct. 22, 2024	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024
Business Acquisition [Line Items]
Gain (loss) on disposition of business		$ 0.0	$ 0.0		$ 0.0	$ 20.1
Impairment		$ 0.0	$ 0.0		$ 0.0	$ 34.0
Administrative \| Non-core Domestic Aerosol Business
Business Acquisition [Line Items]
Gain (loss) on disposition of business				$ 20.1
Administrative \| China Architectural Business
Business Acquisition [Line Items]
Impairment				27.1
Consumer Brands Group \| China Architectural Business
Business Acquisition [Line Items]
Impairment				$ 6.9
Metal Packaging Coating Business \| Subsequent Event
Business Acquisition [Line Items]
Payments to acquire businesses	$ 80.0
2023 Acquisitions
Business Acquisition [Line Items]
Consideration transferred							$ 290.0