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COMMITMENTS AND CONTINGENCIES: - Labor matters (Details)
$ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 14, 2023
Feb. 28, 2025
USD ($)
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Jun. 30, 2025
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Dec. 31, 2024
USD ($)
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Jun. 30, 2025
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employee
Ilo and Cuajone          
Labor matters          
Number of labor unions         6
Peru | Labor Matters          
Labor matters          
Percentage of labor unionized     54.00%   54.00%
Total number of workers     1,830   5,204
Number of labor unions       6 6
Number of labor unions represent majority of workers     4   0
Number of labor unions of collective agreement signed     6 5 6
Extended term of agreement   3 years   6 years  
Total signing payments | $   $ 6.3   $ 62.0  
Number of meetings with the unions to discuss different issues of collective interest   6      
Mexico          
Labor matters          
Threshold days to resume activities 15 days