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AMC's BUSINESS COMBINATION PROPOSAL: (Details) | 6 Months Ended
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Jun. 30, 2011
AMC's BUSINESS COMBINATION PROPOSAL: |
Proposed share exchange ratio from AMC | 1.237

X
- Definition Represents the stock exchange ratio in the proposed business combination from the reporting entity's parent company. + Details
Name: | scco_BusinessCombinationProposalFromParentShareExchangeRatio
Namespace Prefix: | scco
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_BusinessCombinationsAbstract
Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration