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INVENTORIES, INCLUDING LONG-TERM MILL AND LEACH STOCKPILES (Components of Inventories) (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
lb
Dec. 31, 2021
USD ($)
$ / shares
lb
Dec. 31, 2020
USD ($)
Components of Inventories [Line Items]      
Total materials and supplies, net $ 1,964 $ 1,669  
Mill stockpiles 216 193  
Inventory, Ore Stockpiles on Leach Pads, Gross 1,167 977  
Total current mill and leach stockpiles 1,383 1,170  
Raw materials (primarily concentrate) 443 536  
Work-in-process 221 195  
Finished goods 1,169 927  
Total product 1,833 1,658  
Mill stockpiles 199 226  
Leach stockpiles 1,053 1,161  
Total long-term inventories 1,252 1,387  
Inventory obsolescence reserves 39 36  
Metals inventory adjustments 29 $ 16 $ 96
Inventory adjustment, stockpile write-off $ 10    
Increase in recoverable copper in leach stockpiles | lb (213,000,000)    
El Abra      
Components of Inventories [Line Items]      
Increase (Decrease) in recoverable copper in Leach Stockpiles | lb (135,000,000)    
Morenci      
Components of Inventories [Line Items]      
Increase in recoverable copper in leach stockpiles | lb   (191,000,000)  
Increase in net income as a result of recoverable inventory   $ 112  
Increase in earnings per share as a result of increased recoverable inventory | $ / shares   $ 0.08  
Copper      
Components of Inventories [Line Items]      
Metals inventory adjustments $ 19