XML 51 R28.htm IDEA: XBRL DOCUMENT
v3.19.3

INCOME TAXES: (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2019
INCOME TAXES: |
Schedule of income tax provision and effective income tax rate | ​ The income tax provision and the effective income tax rate for the nine months of 2019 and 2018 consisted of ($ in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2019 |  | 2018 | ​
Statutory income tax provision | ​ | $ | 648.0 | ​ | $ | 698.5 | ​
GILTI Tax | ​ | ​ | — | ​ | ​ | 15.2 | ​
Peruvian royalty | ​ |  | 8.6 | ​ |  | 6.7 | ​
Mexican royalty | ​ |  | 47.6 | ​ |  | 60.9 | ​
Peruvian special mining tax | ​ |  | 25.8 | ​ |  | 22.3 | ​
Total income tax provision | ​ | $ | 730.0 | ​ | $ | 803.6 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Effective income tax rate | ​ | ​ | 38.2 | % | ​ | 39.2 | %

X
- Definition Disclosure of the income tax provision attributable to continuing operations and the effective income tax rate. + References No definition available. + Details
Name: | scco_ScheduleOfIncomeTaxProvisionAndEffectiveIncomeTaxRateTableTextBlock
Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration