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INCOME TAXES: - Other (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Income Taxes |  |
Peruvian special mining tax | $ 4.2 | $ 6.1
Peru |  |
Income Taxes |  |
Royalty charges | $ 9.3 | $ 6.0

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

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- Details
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Balance Type: |
Period Type: |