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CONTINGENCIES (Litigation) (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 23, 2021
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Mar. 31, 2020
case
Loss Contingencies [Line Items]              
Environmental obligations and shutdown costs       $ 159,000 $ 105,000 $ 89,000  
Louisiana Parishes Coastal Erosion Cases [Member] | Settled Litigation [Member]              
Loss Contingencies [Line Items]              
Number of cases | case             42
Asbestos Contamination in Talc-Based Personal Care Products [Member]              
Loss Contingencies [Line Items]              
Settlement expense       (130,000) 0 $ 0  
FCX Affiliates [Member] | Settled Litigation [Member]              
Loss Contingencies [Line Items]              
Number of cases | case             13
FCX Affiliates [Member] | Louisiana Parishes Coastal Erosion Cases [Member] | Settled Litigation [Member]              
Loss Contingencies [Line Items]              
Number of cases | case             13
Settlement amount   $ 23,500          
Settlement, initial payment   $ 15,000          
Settlement expense         15,000    
FCX Affiliates [Member] | Asbestos Contamination in Talc-Based Personal Care Products [Member]              
Loss Contingencies [Line Items]              
Settlement expense       $ 24,000 $ 28,000    
Cyprus Mines [Member] | Subsequent Event [Member]              
Loss Contingencies [Line Items]              
Settlement amount $ 130,000            
Settlement expense $ 130,000            
Forecast [Member] | FCX Affiliates [Member] | Louisiana Parishes Coastal Erosion Cases [Member] | Settled Litigation [Member]              
Loss Contingencies [Line Items]              
Settlement, installment payment     $ 4,250