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COMMITMENTS AND CONTINGENCIES: (Tables) | 6 Months Ended
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Jun. 30, 2019
Schedule of environmental capital investments | Environmental capital investments in the six months ended June 30, 2019 and 2018 were as follows (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2019 |  | 2018
Peruvian operations | ​ | $ | 13.9 | ​ | $ | 18.0
Mexican operations | ​ |  | 18.4 | ​ |  | 26.5
​ | ​ | $ | 32.3 | ​ | $ | 44.5
​

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- Definition Tabular disclosure of environmental capital expenditures incurred during the period. + References No definition available. + Details
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Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
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