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EXIT AND DISPOSAL ACTIVITIES - Schedule of Costs Incurred and Cumulative Costs by Cost Type (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 8.8	$ 1.0	$ 9.3
Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8.0	0.6	8.2
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.8	$ 0.4	$ 1.1

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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