DERIVATIVES - Schedule of Fair Value of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 3.4	$ 3.3
Derivative Liabilities	17.8	9.0
Foreign exchange contracts \| Other receivables \| Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	0.8	1.4
Foreign exchange contracts \| Other receivables \| Not Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	2.5	1.8
Foreign exchange contracts \| Deferred charges and other \| Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	0.1	0.1
Foreign exchange contracts \| Accounts payable \| Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	6.4	8.1
Foreign exchange contracts \| Accounts payable \| Not Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	11.0	0.9
Foreign exchange contracts \| Other long term liabilities \| Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.4	$ 0.0

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483444/210-20-55-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483466/210-20-50-3

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483444/210-20-55-7

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4B

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-SubTopic 20
-Topic 860
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481326/860-20-50-4D

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Period Type:	instant