PROPERTY, PLANT AND EQUIPMENT - Schedule of Deferred Implementation Costs (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Property, Plant and Equipment [Line Items]
Deferred cloud computing costs, net	$ 3.7	$ 8.3
Prepaid expenses and other current assets
Property, Plant and Equipment [Line Items]
Deferred cloud computing costs, net	3.3	4.3
Deferred charges and other
Property, Plant and Equipment [Line Items]
Deferred cloud computing costs, net	$ 0.4	$ 4.0

Amount, after accumulated amortization, of capitalized implementation cost from hosting arrangement that is service contract.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-SubTopic 40
-Topic 350
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482558/350-40-50-3

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant