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COMMITMENTS AND CONTINGENCIES- Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Feb. 29, 2020
company
Loss Contingencies [Line Items]          
Accrual for environmental loss contingencies, number of companies negotiating consent decree | company         3
Accrued probable future environmental expenditures $ 157.2 $ 118.3 $ 124.5 $ 119.7  
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Accrued expenses and other current liabilities, Other non-current liabilities Accrued expenses and other current liabilities, Other non-current liabilities      
Insurance recoveries $ 1.7 $ 8.3 $ 4.5    
Calvert City          
Loss Contingencies [Line Items]          
Accrued probable future environmental expenditures $ 148.9