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REVENUE: - Provisionally prices sales (Details) lb in Millions, $ in Millions | 6 Months Ended
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Jun. 30, 2021 USD ($) lb $ / item
Copper |
Provisionally priced sales: |
Provisional price sales adjustment amounts included in accounts receivable and net sales | $ | $ (16.8)
Copper | July 2021 through November 2021 |
Provisionally priced sales: |
Sales volume (in million lbs.) | lb | 196.6
Provisional price | $ / item | 4.26
Molybdenum |
Provisionally priced sales: |
Provisional price sales adjustment amounts included in accounts receivable and net sales | $ | $ 79.9
Molybdenum | July 2021 through September 2021 |
Provisionally priced sales: |
Sales volume (in million lbs.) | lb | 11.7
Provisional price | $ / item | 18.95

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- Definition Aggregate notional amount of provisionally priced sales agreements with notional amounts expressed in nonmonetary units. + References No definition available. + Details
Name: | scco_NonmonetaryNotionalAmountOfProvisionallyPricedSalesAgreements
Namespace Prefix: | scco_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

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- Definition The per unit price of provisionally priced sales agreements. + References No definition available. + Details
Name: | scco_ProvisionalPriceOfSalesAgreementPerUnit
Namespace Prefix: | scco_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the provisional sales price adjustment amounts included in accounts receivable and net sales. + References No definition available. + Details
Name: | scco_ProvisionalPriceSalesAdjustmentsInAccountsReceivableAndNetSales
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represents the provisionally priced sales. + References No definition available. + Details
Name: | scco_ProvisionallyPricedSalesLineItems
Namespace Prefix: | scco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ProductOrServiceAxis=scco_CopperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | scco_SettlementMonthAxis=scco_July2021ThroughNovember2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=scco_MolybdenumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | scco_SettlementMonthAxis=scco_July2021ThroughSeptember2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |