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v2.4.1.9

INCOME TAXES: (Details 2) | 12 Months Ended
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Dec. 31, 2014 item | Dec. 31, 2013 | Dec. 31, 2012
Reconciliation of the statutory income tax rate to the effective tax rate |  |  |
Expected tax at U.S. statutory rate (as a percent) | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Foreign tax at other than statutory rate, net of foreign tax credit benefit (as a percent) | (0.90%)scco_EffectiveIncomeTaxRateReconciliationIncomeTaxRateDifferential | (0.20%)scco_EffectiveIncomeTaxRateReconciliationIncomeTaxRateDifferential | (0.50%)scco_EffectiveIncomeTaxRateReconciliationIncomeTaxRateDifferential
Percentage depletion (as a percent) | (5.20%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion | (5.00%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion | (4.20%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion
Other permanent differences (as a percent) | 4.60%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther | 3.50%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther | 3.70%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther
Increase (decrease) in unrecognized tax benefits for uncertain tax positions (as a percent) | 0.50%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies |  | 5.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies
Repatriated foreign earnings (as a percent) | (0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (1.40%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (1.70%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Amounts (over) / under provided in prior years (as a percent) | 2.20%us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes | 0.40%us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes | (0.60%)us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
Other (as a percent) | 0.70%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective income tax rate | 36.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 32.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 36.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations
U.S. statutory rate (as a percent) | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Number of jurisdictions where company files income tax returns | 3 scco_NumberOfJurisdictionsWhereEntityFilesIncomeTaxReturn |  |
Duration for which statutory tax rates for Peru and Mexico are considered to determine effective tax rate | 3 years |  |
Peru |  |  |
Reconciliation of the statutory income tax rate to the effective tax rate |  |  |
Expected tax at U.S. statutory rate (as a percent) | 30.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_PE | 30.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_PE | 30.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_PE
U.S. statutory rate (as a percent) | 30.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_PE | 30.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_PE | 30.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_PE
Mexico |  |  |
Reconciliation of the statutory income tax rate to the effective tax rate |  |  |
Expected tax at U.S. statutory rate (as a percent) | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_MX | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_MX | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_MX
U.S. statutory rate (as a percent) | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_MX | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_MX | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_StatementGeographicalAxis = country_MX

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- Definition Represents the duration for which statutory tax rates for Peru and Mexico considered to determine effective tax rate. + References No definition available. + Details
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- Definition The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the difference between special tax rate applicable to eligible income and the domestic federal statutory income tax rate recorded during the period. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to depletion. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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