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PROVISIONALLY PRICED SALES: (Details)	Mar. 31, 2015 lb
Copper | April and May 2015
PROVISIONALLY PRICED SALES:
Nonmonetary notional amount of commodity (in million lbs.)	60,900,000scco_NonmonetaryNotionalAmountOfProvisionallyPricedSalesAgreements / us-gaap_ProductOrServiceAxis = scco_CopperMember / scco_SettlementMonthAxis = scco_SettlementInAprilAndMay2015Member
Provisional price	2.75scco_ProvisionalPriceOfSalesAgreementsPerUnit / us-gaap_ProductOrServiceAxis = scco_CopperMember / scco_SettlementMonthAxis = scco_SettlementInAprilAndMay2015Member
Molybdenum | April To July 2015
PROVISIONALLY PRICED SALES:
Nonmonetary notional amount of commodity (in million lbs.)	10,300,000scco_NonmonetaryNotionalAmountOfProvisionallyPricedSalesAgreements / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / scco_SettlementMonthAxis = scco_SettlementInAprilToJuly2015Member
Provisional price	8.28scco_ProvisionalPriceOfSalesAgreementsPerUnit / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / scco_SettlementMonthAxis = scco_SettlementInAprilToJuly2015Member

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- Definition

Aggregate notional amount of provisionally priced sales agreements with notional amounts expressed in nonmonetary units.

+ References

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- Definition

The per unit price of provisionally priced sales agreements.

+ References

No definition available.

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