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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 |  |  |  |

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