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STOCKHOLDERS' EQUITY: (Details 2) (USD $) | 0 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 48 Months Ended | 84 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 29, 2015 | Dec. 31, 2014 | Nov. 30, 2014 | Oct. 31, 2014 | Sep. 30, 2014 | Aug. 31, 2014 | Jul. 31, 2014 | Jun. 30, 2014 | Mar. 21, 2014 | Jan. 31, 2014 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2014 | Jan. 29, 2015 | Dec. 31, 2008
SCC share repurchase program: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount authorized for share repurchase program |  | $ 3,000,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 |  |  |  |  |  |  |  |  | $ 3,000,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 |  |  |  |  |  |  | $ 3,000,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 |  | $ 500,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1
Total Number of Shares Purchased |  | 3,129,524 us-gaap_TreasuryStockSharesAcquired | 1,286,767 us-gaap_TreasuryStockSharesAcquired | 5,821,213 us-gaap_TreasuryStockSharesAcquired | 4,498,263 us-gaap_TreasuryStockSharesAcquired | 4,926,534 us-gaap_TreasuryStockSharesAcquired | 724,516 us-gaap_TreasuryStockSharesAcquired | 450,532 us-gaap_TreasuryStockSharesAcquired | 106,079 us-gaap_TreasuryStockSharesAcquired | 1,768,000 us-gaap_TreasuryStockSharesAcquired | 10,237,504 us-gaap_TreasuryStockSharesAcquired | 10,149,313 us-gaap_TreasuryStockSharesAcquired | 450,532 us-gaap_TreasuryStockSharesAcquired | 1,874,079 us-gaap_TreasuryStockSharesAcquired | 10,245,000 us-gaap_TreasuryStockSharesAcquired | 4,442,336 us-gaap_TreasuryStockSharesAcquired | 42,472,150 us-gaap_TreasuryStockSharesAcquired | 79,870,914 us-gaap_TreasuryStockSharesAcquired |  |
Average Price Paid per Share (in dollars per share) |  | $ 28.08 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 29.50 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 28.86 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 31.44 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 32.09 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 33.04 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 28.92 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 27.04 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 28.06 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 28.70 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 31.87 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 28.92 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 28.00 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 27.47 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 33.17 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 17.20 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 23.07 us-gaap_TreasuryStockAcquiredAverageCostPerShare |  |
Total Number of Shares Purchased as Part of Publicly Announced Plan |  | 79,870,914 scco_TreasuryStockSharesAcquiredCumulative | 76,741,390 scco_TreasuryStockSharesAcquiredCumulative | 75,454,623 scco_TreasuryStockSharesAcquiredCumulative | 69,633,410 scco_TreasuryStockSharesAcquiredCumulative | 65,135,147 scco_TreasuryStockSharesAcquiredCumulative | 60,208,613 scco_TreasuryStockSharesAcquiredCumulative | 59,484,097 scco_TreasuryStockSharesAcquiredCumulative | 59,033,565 scco_TreasuryStockSharesAcquiredCumulative | 58,927,486 scco_TreasuryStockSharesAcquiredCumulative | 79,870,914 scco_TreasuryStockSharesAcquiredCumulative | 69,633,410 scco_TreasuryStockSharesAcquiredCumulative | 59,484,097 scco_TreasuryStockSharesAcquiredCumulative |  | 57,159,486 scco_TreasuryStockSharesAcquiredCumulative | 46,914,486 scco_TreasuryStockSharesAcquiredCumulative | 42,472,150 scco_TreasuryStockSharesAcquiredCumulative | 79,870,914 scco_TreasuryStockSharesAcquiredCumulative |  |
Maximum Number of Shares that May Yet Be Purchased Under the Plan @ $29.11 |  | 5,593,347 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased |  |  |  |  |  |  |  |  | 5,593,347 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased |  |  |  |  |  |  | 5,593,347 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased |  |
Total Cost |  | 87,900,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 38,000,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 168,000,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 141,400,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 158,100,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 23,900,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 13,000,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 2,900,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 49,600,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 293,900,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 323,400,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 13,000,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 52,500,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 281,400,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 147,300,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 730,800,000 us-gaap_TreasuryStockValueAcquiredCostMethod | 1,842,300,000 us-gaap_TreasuryStockValueAcquiredCostMethod |  |
Percentage of Ownership by Parent |  | 84.60%scco_PercentageOfOwnershipByParent |  |  |  |  |  |  |  |  | 84.60%scco_PercentageOfOwnershipByParent |  |  |  | 82.30%scco_PercentageOfOwnershipByParent |  |  | 84.60%scco_PercentageOfOwnershipByParent |  |
Maximum number of shared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,500,000 scco_MaximumSharesStockRepurchaseProgramAuthorizedToBeRepurchased |
Increase in amount authorized for share repurchase program | $ 1,000,000,000 scco_StockRepurchaseProgramIncreaseInAuthorizedAmount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The maximum number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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