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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]      
Accrued probable future environmental expenditures $ 111.5   $ 118.3
Expense related to environmental activities $ 1.4 $ 2.0  
Insurance recoveries   $ 0.6  
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Accrued expenses and other current liabilities, Other Liabilities, Noncurrent   Accrued expenses and other current liabilities, Other Liabilities, Noncurrent
Calvert City      
Schedule of Equity Method Investments [Line Items]      
Accrued probable future environmental expenditures $ 102.0