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PROVISIONALLY PRICED SALES: (Details)	Mar. 31, 2013 lb
Copper | April 2013
Provisionally priced sales
Nonmonetary notional amount of commodity (in million lbs.)	8,800,000
Provisional price	3.41
Molybdenum | April through June 2013
Provisionally priced sales
Nonmonetary notional amount of commodity (in million lbs.)	9,300,000
Provisional price	10.85

X

- 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:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	scco_ProvisionallyPricedSalesLineItems
Namespace Prefix:	scco_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The per unit price of provisionally priced sales agreements.

+ References

No definition available.

+ Details

Name:	scco_ProvisionalPriceOfSalesAgreementsPerUnit
Namespace Prefix:	scco_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant