DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on OCI and the Condensed, Consolidated Statements of Operations (Details) - Fair value, inputs, level 2 - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Derivatives not designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Statement of Operations	$ (13.5)	$ 28.4
Derivatives not designated as Hedging Instruments | Currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Statement of Operations	$ (14.7)	$ 17.9
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net
Derivatives not designated as Hedging Instruments | Commodity hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Statement of Operations	$ 1.2	$ 10.5
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of sales	Cost of sales
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI	$ 4.2	$ 29.9
Amount of Gain/(Loss) Reclassified From AOCI Into Statement of Operations	17.4	6.8
Cash Flow Hedging | Interest rate swap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI	11.3	24.1
Amount of Gain/(Loss) Reclassified From AOCI Into Statement of Operations	$ 11.5	$ (2.1)
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest expense	Interest expense
Cash Flow Hedging | Commodity hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI	$ (7.1)	$ 5.8
Amount of Gain/(Loss) Reclassified From AOCI Into Statement of Operations	$ 5.9	$ 8.9
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of sales	Cost of sales