XML 49 R36.htm IDEA: XBRL DOCUMENT
v3.10.0.1

INCOME TAXES: (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Income Taxes |  |  |  |
Statutory income tax provision |  |  | $ 698.5 | $ 473.0
GILTI tax |  |  | 15.2 |
Peruvian royalty |  |  | 6.7 | 0.5
Mexican royalty |  |  | 60.9 | 67.7
Peruvian special mining tax |  |  | 22.3 | 15.4
Total income tax provision | $ 257.9 | $ 220.1 | $ 803.6 | $ 556.6
Effective income tax rate (as a percent) |  |  | 39.20% | 35.70%
Changes in the entity's uncertain tax positions |  |  | $ 0.0 |
Peru |  |  |  |
Income Taxes |  |  |  |
Peruvian royalty |  |  | $ 6.7 | $ 0.5
Increment in operating income margin for royalty tax (as a percent) |  |  | 5.00% |
Increase in royalty tax rate for each 5% increase up to 12% increase in operating income margin (as a percent) |  |  | 0.75% |
Royalty charges |  |  | $ 24.2 | 15.4
Increase in special mining tax rate for each 5% increase up to 85% increase in operating income margin (as a percent) |  |  | 0.40% |
Increment in operating income margin (as a percent) |  |  | 5.00% |
Accrued special mining tax |  |  | $ 22.3 | 15.4
Peru | Minimum |  |  |  |
Income Taxes |  |  |  |
Mining royalty tax (as a percent) |  |  | 1.00% |
Royalty charge assessed as a percentage of net sales |  |  | 1.00% |
Special mine tax (as a percent) |  |  | 2.00% |
Increment in operating income margin (as a percent) |  |  | 2.00% |
Peru | Maximum |  |  |  |
Income Taxes |  |  |  |
Mining royalty tax (as a percent) |  |  | 12.00% |
Operating income margin for royalty tax (as a percent) |  |  | 10.00% |
Increment in operating income margin for royalty tax (as a percent) |  |  | 12.00% |
Special mine tax (as a percent) |  |  | 8.40% |
Operating income margin (as a percent) |  |  | 10.00% |
Increment in operating income margin (as a percent) |  |  | 85.00% |
Mexico |  |  |  |
Income Taxes |  |  |  |
Mexican royalty |  |  | $ 60.9 | $ 67.7
Mining royalty tax (as a percent) |  |  | 7.50% |
Additional royalty tax over net sales from sales of gold, silver and platinum (as a percent) |  |  | 0.50% |

X
- Definition The amount of tax on global intangible low-taxed income (GILTI) + References No definition available. + Details
Name: | scco_GlobalIntangibleLowTaxedIncomeTax
Namespace Prefix: | scco_
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: | scco_IncomeTaxesLineItems
Namespace Prefix: | scco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the royalty charge assessed as a percentage of net sales. + References No definition available. + Details
Name: | scco_MiningRoyaltyTaxAssessedAsPercentageOfNetSales
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the 7.5% on earnings before taxes adjusted as defined by Mexican tax regulations + References No definition available. + Details
Name: | scco_MiningRoyaltyTaxMexico
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of mining royalty in excess over the 1% of net sales. + References No definition available. + Details
Name: | scco_MiningRoyaltyTaxPeru
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the increase over the threshold percentage of operating income margin. + References No definition available. + Details
Name: | scco_OperatingIncomeMarginIncreaseOverThresholdPercentage
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the increase over the threshold percentage of operating income margin for determining royalty charge. + References No definition available. + Details
Name: | scco_OperatingIncomeMarginIncreaseOverThresholdPercentageForRoyaltyTax
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the threshold percentage of operating income margin for determining special mining tax. + References No definition available. + Details
Name: | scco_OperatingIncomeMarginThresholdPercentage
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the threshold percentage of operating income margin for determining royalty charge. + References No definition available. + Details
Name: | scco_OperatingIncomeMarginThresholdPercentageForRoyaltyTax
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the increase in royalty tax rate for each 5 percent increase up to 12 percent increase in the operating income margin. + References No definition available. + Details
Name: | scco_PercentageIncreaseInRoyaltyTaxAtEach5PercentIncreaseInOperatingIncomeMarginThresholdPercentageUpto12Percent
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the increase in special mining tax rate for each 5 percent increase up to 85 percent increase in the operating income margin. + References No definition available. + Details
Name: | scco_PercentageIncreaseInSpecialMiningTaxAtEach5PercentIncreaseInOperatingIncomeMarginThresholdPercentageUpto85Percent
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of additional royalty tax over net sales from sales of gold, silver and platinum under the tax reform. + References No definition available. + Details
Name: | scco_PercentageOfAdditionalRoyaltyTaxOverNetSalesFromSalesOfGoldSilverAndPlatinum
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of mining royalty tax based on operating profits. + References No definition available. + Details
Name: | scco_PercentageOfMiningRoyaltyTax
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of special mining tax based on operating income margins. + References No definition available. + Details
Name: | scco_PercentageOfSpecialMiningTax
Namespace Prefix: | scco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the total mining royalty tax compute based on operating income or the 1% of net sales, the highest. + References No definition available. + Details
Name: | scco_RoyaltyExpenses
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the special mining tax based on operating income. + References No definition available. + Details
Name: | scco_SpecialMiningTax
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount accrued for the special mining tax during the period. + References No definition available. + Details
Name: | scco_SpecialMiningTaxAccrued
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: 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 3: 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=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from 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 10 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319 Reference 2: 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)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount 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 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: 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)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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