XML 90 R69.htm IDEA: XBRL DOCUMENT
v3.20.4

COMMITMENTS AND CONTINGENCIES: - Labor matters (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2019 PEN (S/) | Nov. 30, 2019 USD ($) | May 31, 2019 PEN (S/) | May 31, 2019 USD ($) | Mar. 31, 2019 PEN (S/) item | Mar. 31, 2019 USD ($) item | Aug. 31, 2018 PEN (S/) item | Aug. 31, 2018 USD ($) item | Jun. 30, 2018 PEN (S/) | Jun. 30, 2018 USD ($) | Dec. 31, 2020 USD ($) item employee | Aug. 22, 2018 USD ($)
Labor Matters |  |  |  |  |  |  |  |  |  |  |  |
Labor matters |  |  |  |  |  |  |  |  |  |  |  |
Annual salary increase (as a percent) | 5.00% | 5.00% | 5.50% | 5.50% |  |  |  |  |  |  |  |
Labor Matters | Year One Collective Bargaining Agreement |  |  |  |  |  |  |  |  |  |  |  |
Labor matters |  |  |  |  |  |  |  |  |  |  |  |
Term of agreement |  |  | 1 year | 1 year |  |  |  |  |  |  |  |
Labor expense |  | $ 13,300 | S/ 16,000 | $ 4,800 |  |  |  |  |  |  |  |
Labor Matters | Year Three Collective Bargaining Agreement |  |  |  |  |  |  |  |  |  |  |  |
Labor matters |  |  |  |  |  |  |  |  |  |  |  |
Term of agreement | 3 years | 3 years |  |  |  |  |  |  |  |  |  |
Labor expense | S/ | S/ 45,000 |  |  |  |  |  |  |  |  |  |  |
Peru | Labor Matters |  |  |  |  |  |  |  |  |  |  |  |
Labor matters |  |  |  |  |  |  |  |  |  |  |  |
Percentage of labor unionized |  |  |  |  |  |  |  |  |  |  | 66.00% |
Total number of workers | employee |  |  |  |  |  |  |  |  |  |  | 4,739 |
Number of labor unions |  |  |  |  |  |  |  |  |  |  | 6 |
Number of labor unions represent majority of workers |  |  |  |  |  |  |  |  |  |  | 1 |
Number of labor unions other than majority workers unions |  |  |  |  |  |  |  |  |  |  | 5 |
Term of agreement |  |  |  |  |  |  | 3 years | 3 years | 3 years | 3 years |  |
Annual salary increase (as a percent) |  |  |  |  | 5.00% | 5.00% | 5.00% | 5.00% | 5.00% | 5.00% |  |
Labor expense |  |  |  |  | S/ 45,000 | $ 13,600 | S/ 45,000 | $ 13,600 | S/ 45,000 | $ 13,600 |  |
Number of additional unions |  |  |  |  | 1 | 1 | 3 | 3 |  |  |  |
Mexico | San Martin |  |  |  |  |  |  |  |  |  |  |  |
Labor matters |  |  |  |  |  |  |  |  |  |  |  |
Budgeted cost for rehabilitation of mine | $ |  |  |  |  |  |  |  |  |  |  |  | $ 97,700,000
Total expense incurred on rehabilitation of mine till date | $ |  |  |  |  |  |  |  |  |  |  | $ 86,400,000 |

X
- Definition Represents the number o0f additional unions. + References No definition available. + Details
Name: | scco_NumberOfAdditionalUnions
Namespace Prefix: | scco_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of labor unions in the entity. + References No definition available. + Details
Name: | scco_NumberOfLaborUnions
Namespace Prefix: | scco_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of labor unions other than the majority workers unions in the entity. + References No definition available. + Details
Name: | scco_NumberOfLaborUnionsOtherThanMajorityWorkersUnions
Namespace Prefix: | scco_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of labor unions in the entity representing the majority of workers. + References No definition available. + Details
Name: | scco_NumberOfLaborUnionsRepresentMajorityOfWorkers
Namespace Prefix: | scco_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents percentage of annual salary increase. + References No definition available. + Details
Name: | scco_PercentageOfAnnualIncreaseInSalary
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of labor which was unionized labor. + References No definition available. + Details
Name: | scco_PercentageOfLaborUnionized
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the amount of budgeted cost for rehabilitation of mine. + References No definition available. + Details
Name: | scco_RehabilitationOfMineBudgetedCost
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the total expense incurred on rehabilitation of mine. + References No definition available. + Details
Name: | scco_RehabilitationOfMineTotalExpense
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the term of the agreement entered into. + References No definition available. + Details
Name: | scco_TermOfAgreement
Namespace Prefix: | scco_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of workers of the Peruvian operations. + References No definition available. + Details
Name: | scco_TotalNumberOfWorkers
Namespace Prefix: | scco_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(4)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_LaborAndRelatedExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=scco_LaborMattersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=scco_YearOneCollectiveBargainingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=scco_YearThreeCollectiveBargainingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_PE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_MX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | scco_SiteAxis=scco_SanMartinMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |