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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Sep. 30, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 3.3 $ 22.2
Derivative liabilities 9.0 6.0
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 3.3 22.2
Derivative liabilities 9.0 6.0
Debt 1,418.6 2,815.9
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 3.3 22.2
Derivative liabilities 9.0 6.0
Debt 1,555.5 3,156.8
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0.0 0.0
Derivative liabilities 0.0 0.0
Debt 0.0 0.0
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 3.3 22.2
Derivative liabilities 9.0 6.0
Debt 1,418.6 2,815.9
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0.0 0.0
Derivative liabilities 0.0 0.0
Debt $ 0.0 $ 0.0