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CONTINGENCIES (Other Contingencies) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Other contingencies by location [Line Items] |  |  |
Outstanding Standby Letters Of Credit | $ 306 fcx_OutstandingStandbyLettersOfCredit |  |
Outstanding Surety Bonds Total | 275 fcx_OutstandingSuretyBondsTotal |  |
Portion Of Surety Bonds Related To Reclamation And Closing Costs | 217 fcx_PortionOfSuretyBondsRelatedToReclamationAndClosingCosts |  |
Portion Of Surety Bonds Related To Workers Compensation Self Insurance | 20 fcx_PortionOfSuretyBondsRelatedToWorkersCompensationSelfInsurance |  |
Other Surety Bonds | 38 fcx_OtherSuretyBonds |  |
Self Insurance Reserve | 64 us-gaap_SelfInsuranceReserve |  |
Self Insurance Reserve, Current | 8 us-gaap_SelfInsuranceReserveCurrent |  |
Self Insurance Reserve, Noncurrent | 56 us-gaap_SelfInsuranceReserveNoncurrent |  |
Gain on insurance settlement | 0 us-gaap_InsuranceRecoveries | 0 us-gaap_InsuranceRecoveries | 59 us-gaap_InsuranceRecoveries
PT Freeport Indonesia [Member] |  |  |
Other contingencies by location [Line Items] |  |  |
Estimated Insurance Recoveries |  |  | 63 us-gaap_EstimatedInsuranceRecoveries / dei_LegalEntityAxis = fcx_PtFreeportIndonesiaMember
Gain on insurance settlement |  |  | $ 59 us-gaap_InsuranceRecoveries / dei_LegalEntityAxis = fcx_PtFreeportIndonesiaMember

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- Details
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- Definition Amount of other surety bonds as of the balance sheet date. + References No definition available. + Details
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- Definition Outstanding stand-by letters of credit as of the balance sheet date, primarily for reclamation and environmental obligations and workers; compensation insurance program. + References No definition available. + Details
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- Definition Outstanding surety bonds as of the balance sheet date, primarily for reclamation and environmental obligations and workers; compensation insurance program. + References No definition available. + Details
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- Definition Portion of outstanding surety bonds related to reclamation and environmental obligations. + References No definition available. + Details
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- Definition Portion of outstanding surety bonds related to workers compensation self-insurance. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + 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 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
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- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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