DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Fair Value of Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 7.9	$ 0.6
Liability Derivatives	8.7	1.9
Commodity contracts
Derivatives, Fair Value [Line Items]
Netting of contracts in a receivable position against contracts in payable position	7.8	0.6
Derivatives Designated as Hedging Instruments | Commodity contracts | Other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	6.2	0.5
Derivatives Designated as Hedging Instruments | Commodity contracts | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	7.1	1.7
Derivatives Designated as Hedging Instruments | Commodity contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	1.7	0.1
Derivatives Designated as Hedging Instruments | Commodity contracts | Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 1.6	$ 0.2