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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	$ 1,471,300us-gaap_RevenueMineralSales	$ 1,474,600us-gaap_RevenueMineralSales	$ 1,487,400us-gaap_RevenueMineralSales	$ 1,354,400us-gaap_RevenueMineralSales	$ 1,535,200us-gaap_RevenueMineralSales	$ 1,384,500us-gaap_RevenueMineralSales	$ 1,410,200us-gaap_RevenueMineralSales	$ 1,623,000us-gaap_RevenueMineralSales	$ 5,787,694us-gaap_RevenueMineralSales	$ 5,952,943us-gaap_RevenueMineralSales	$ 6,669,266us-gaap_RevenueMineralSales
Copper
SALES VALUE PER SEGMENT:
Net sales outside of segments									4,518,000us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember	4,654,800us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember	5,136,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember
Molybdenum
SALES VALUE PER SEGMENT:
Net sales outside of segments									506,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember	389,200us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember	450,500us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember
Silver
SALES VALUE PER SEGMENT:
Net sales outside of segments									273,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember	393,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember	495,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember
Zinc
SALES VALUE PER SEGMENT:
Net sales outside of segments									209,800us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember	200,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember	195,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember
Other
SALES VALUE PER SEGMENT:
Net sales outside of segments									279,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember	314,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember	390,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember
Mexican Open-Pit
SALES VALUE PER SEGMENT:
Net sales outside of segments									2,954,200us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	2,976,000us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	3,339,000us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican Open-Pit | Copper
SALES VALUE PER SEGMENT:
Net sales outside of segments									2,380,100us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	2,365,500us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	2,604,900us-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									299,800us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	241,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	271,300us-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									146,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	242,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	280,500us-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									127,600us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	126,500us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember	182,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanOpenPitMember
Mexican IMMSA Unit
SALES VALUE PER SEGMENT:
Net sales outside of segments									442,100us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	459,200us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	513,000us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Mexican IMMSA Unit | Copper
SALES VALUE PER SEGMENT:
Net sales outside of segments									46,400us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	48,400us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	62,300us-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									88,000us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	110,000us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	161,500us-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									209,800us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	200,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_ZincMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	195,900us-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									97,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	99,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember	93,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_MexicanIMMSAUnitMember
Peruvian Operations
SALES VALUE PER SEGMENT:
Net sales outside of segments									2,481,800us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	2,614,600us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	2,952,300us-gaap_RevenueMineralSales / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Copper
SALES VALUE PER SEGMENT:
Net sales outside of segments									2,137,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	2,289,300us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	2,532,000us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_CopperMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Molybdenum
SALES VALUE PER SEGMENT:
Net sales outside of segments									207,100us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	147,900us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	179,200us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_MolybdenumMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Silver
SALES VALUE PER SEGMENT:
Net sales outside of segments									71,600us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	79,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	113,600us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_SilverMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember
Peruvian Operations | Other
SALES VALUE PER SEGMENT:
Net sales outside of segments									65,200us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	97,700us-gaap_RevenueMineralSales / us-gaap_ProductOrServiceAxis = scco_OtherMetalsMember / us-gaap_StatementBusinessSegmentsAxis = scco_PeruvianOperationsMember	127,500us-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

X

- Definition

Aggregate revenue from the sale of minerals and related products, and from rendering services such as exploration, development, mining, processing and providing mining support activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a),(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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