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SEGMENT AND RELATED INFORMATION: (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments | $ 1,471,300 us-gaap_RevenueMineralSales | $ 1,474,600 us-gaap_RevenueMineralSales | $ 1,487,400 us-gaap_RevenueMineralSales | $ 1,354,400 us-gaap_RevenueMineralSales | $ 1,535,200 us-gaap_RevenueMineralSales | $ 1,384,500 us-gaap_RevenueMineralSales | $ 1,410,200 us-gaap_RevenueMineralSales | $ 1,623,000 us-gaap_RevenueMineralSales | $ 5,787,694 us-gaap_RevenueMineralSales | $ 5,952,943 us-gaap_RevenueMineralSales | $ 6,669,266 us-gaap_RevenueMineralSales
Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 4,518,000 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember | 4,654,800 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember | 5,136,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember
Molybdenum |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 506,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember | 389,200 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember | 450,500 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember
Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 273,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember | 393,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember | 495,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember
Zinc |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 209,800 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember | 200,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember | 195,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember
Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 279,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember | 314,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember | 390,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember
Mexican Open-Pit |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,954,200 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 2,976,000 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 3,339,000 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican Open-Pit | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,380,100 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 2,365,500 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 2,604,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican Open-Pit | Molybdenum |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 299,800 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 241,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 271,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican Open-Pit | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 146,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 242,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 280,500 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican Open-Pit | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 127,600 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 126,500 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember | 182,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican IMMSA Unit |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 442,100 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 459,200 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 513,000 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Mexican IMMSA Unit | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 46,400 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 48,400 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 62,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Mexican IMMSA Unit | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 88,000 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 110,000 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 161,500 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Mexican IMMSA Unit | Zinc |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 209,800 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 200,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 195,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Mexican IMMSA Unit | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 97,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 99,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember | 93,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Peruvian Operations |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,481,800 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 2,614,600 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 2,952,300 us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,137,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 2,289,300 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 2,532,000 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Molybdenum |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 207,100 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 147,900 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 179,200 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 71,600 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 79,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 113,600 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 65,200 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 97,700 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember | 127,500 us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Corporate, other and eliminations |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | (90,400)us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | (96,900)us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | (135,000)us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember
Corporate, other and eliminations | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | (46,400)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | (48,400)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | (62,300)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember
Corporate, other and eliminations | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | (33,000)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | (38,700)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | (60,300)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember
Corporate, other and eliminations | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | $ (11,000)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | $ (9,800)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember | $ (12,400)us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_CorporateOtherAndEliminationsMember

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