DERIVATIVES - Schedule of Fair Value of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 1.8	$ 3.3
Derivative Liabilities	15.3	9.0
Foreign exchange contracts | Designated as Hedge | Other receivables
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 1.4	$ 1.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other receivables	Other receivables
Foreign exchange contracts | Designated as Hedge | Deferred charges and other
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 0.1	$ 0.1
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Deferred charges and other	Deferred charges and other
Foreign exchange contracts | Designated as Hedge | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 1.4	$ 0.0
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Foreign exchange contracts | Designated as Hedge | Accounts payable
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 11.5	$ 8.1
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable	Accounts payable
Foreign exchange contracts | Not Designated as Hedge
Derivatives, Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other receivables	Other receivables
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable	Accounts payable
Foreign exchange contracts | Not Designated as Hedge | Other receivables
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 0.3	$ 1.8
Foreign exchange contracts | Not Designated as Hedge | Accounts payable
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 2.4	$ 0.9