false--12-31FY201900008312595000000050000000273000000000.100.10157900000015820000000.061250.0650.066250.06750.068750.061250.06500.066250.06750.068750.071250.0950.061250.02150.023750.031000.03550.038750.054500.061250.06500.066250.06750.068750.02300.04000.04550.0540P5YP5Y215000000240000001.000001000000000.12P1Y130000000131000000
0000831259
2019-01-01
2019-12-31
0000831259
2020-01-31
0000831259
2019-06-30
0000831259
2018-01-01
2018-12-31
0000831259
2017-01-01
2017-12-31
0000831259
2018-01-01
2018-09-30
0000831259
fcx:MolybdenumMember
2018-01-01
2018-12-31
0000831259
fcx:PTIndonesiaPapuaMetaldanMineralMember
2018-01-01
2018-12-31
0000831259
fcx:MolybdenumMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
2018-01-01
2018-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
2017-01-01
2017-12-31
0000831259
fcx:TimokandaportionofFreeportCobaltMember
2019-01-01
2019-12-31
0000831259
2018-12-31
0000831259
fcx:SouthAmericaMinesSegmentMember
2018-01-01
2018-12-31
0000831259
fcx:TimokandaportionofFreeportCobaltMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2017-01-01
2017-12-31
0000831259
2017-12-31
0000831259
2016-12-31
0000831259
fcx:NorthAmericaCopperMinesSegmentMember
2018-01-01
2018-12-31
0000831259
fcx:SouthAmericaMinesSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:AllOtherSegmentsMember
2017-01-01
2017-12-31
0000831259
us-gaap:AllOtherSegmentsMember
2019-01-01
2019-12-31
0000831259
fcx:GrasbergSegmentMember
2018-01-01
2018-12-31
0000831259
fcx:GrasbergSegmentMember
2017-01-01
2017-12-31
0000831259
fcx:NorthAmericaCopperMinesSegmentMember
2019-01-01
2019-12-31
0000831259
fcx:SouthAmericaMinesSegmentMember
2017-01-01
2017-12-31
0000831259
fcx:NorthAmericaCopperMinesSegmentMember
2017-01-01
2017-12-31
0000831259
fcx:PTSmeltingMember
2019-01-01
2019-12-31
0000831259
2019-12-31
0000831259
fcx:MolybdenumMember
2017-01-01
2017-12-31
0000831259
us-gaap:AllOtherSegmentsMember
2018-01-01
2018-12-31
0000831259
fcx:GrasbergSegmentMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2018-01-01
2018-12-31
0000831259
us-gaap:TreasuryStockMember
2017-12-31
0000831259
us-gaap:ParentMember
2019-12-31
0000831259
us-gaap:ParentMember
2019-01-01
2019-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2019-01-01
2019-12-31
0000831259
us-gaap:CommonStockMember
2019-01-01
2019-12-31
0000831259
us-gaap:CommonStockMember
2017-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2018-01-01
2018-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2019-12-31
0000831259
us-gaap:TreasuryStockMember
2018-01-01
2018-12-31
0000831259
us-gaap:RetainedEarningsMember
2016-12-31
0000831259
us-gaap:ParentMember
2017-01-01
2017-12-31
0000831259
us-gaap:ParentMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2018-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2019-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2017-12-31
0000831259
us-gaap:RetainedEarningsMember
2018-01-01
2018-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2019-01-01
2019-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2018-01-01
2018-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2018-01-01
2018-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2017-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2018-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2017-01-01
2017-12-31
0000831259
us-gaap:CommonStockMember
2018-01-01
2018-12-31
0000831259
us-gaap:ParentMember
2017-12-31
0000831259
us-gaap:CommonStockMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2019-01-01
2019-12-31
0000831259
us-gaap:AdditionalPaidInCapitalMember
2016-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2017-12-31
0000831259
us-gaap:ParentMember
2018-12-31
0000831259
us-gaap:RetainedEarningsMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2016-12-31
0000831259
us-gaap:TreasuryStockMember
2019-01-01
2019-12-31
0000831259
us-gaap:ParentMember
2016-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2017-01-01
2017-12-31
0000831259
us-gaap:RetainedEarningsMember
2019-01-01
2019-12-31
0000831259
us-gaap:CommonStockMember
2016-12-31
0000831259
us-gaap:RetainedEarningsMember
2018-12-31
0000831259
us-gaap:CommonStockMember
2019-12-31
0000831259
us-gaap:TreasuryStockMember
2019-12-31
0000831259
us-gaap:TreasuryStockMember
2016-12-31
0000831259
us-gaap:RetainedEarningsMember
2017-12-31
0000831259
us-gaap:TreasuryStockMember
2018-12-31
0000831259
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2019-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2018-12-31
0000831259
us-gaap:CommonStockMember
2018-12-31
0000831259
us-gaap:RetainedEarningsMember
2019-12-31
0000831259
us-gaap:TreasuryStockMember
2017-01-01
2017-12-31
0000831259
us-gaap:NoncontrollingInterestMember
2016-12-31
0000831259
fcx:CopperMember
2019-01-01
2019-12-31
0000831259
srt:MinimumMember
us-gaap:MachineryAndEquipmentMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2019-12-31
0000831259
srt:MaximumMember
us-gaap:MachineryAndEquipmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:BuildingMember
2019-01-01
2019-12-31
0000831259
2019-01-01
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
2017-01-01
2017-12-31
0000831259
fcx:TFHoldingsLimitedMember
2016-11-15
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
fcx:CobaltMember
us-gaap:SubsequentEventMember
2020-01-31
0000831259
fcx:PtFreeportIndonesiaMember
srt:ScenarioForecastMember
2020-01-01
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
fcx:CobaltMember
2016-11-30
0000831259
fcx:RioTintoShareInJointVentureMember
2018-12-21
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
srt:ScenarioForecastMember
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokUpperZoneMember
us-gaap:SubsequentEventMember
2021-12-31
2021-12-31
0000831259
srt:MaximumMember
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
fcx:CopperMember
2016-11-30
0000831259
fcx:PtFreeportIndonesiaMember
2018-12-22
2019-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
2016-11-16
2016-11-16
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokLowerZoneMember
2019-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
2019-01-01
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
2018-01-01
2018-12-31
0000831259
srt:ScenarioForecastMember
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokUpperZoneMember
us-gaap:SubsequentEventMember
2020-07-31
2020-07-31
0000831259
fcx:PTIndonesiaAsahanAluminiumPerseroInalumMember
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
us-gaap:DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember
fcx:FreeportCobaltMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2019-01-01
2019-12-31
0000831259
us-gaap:IndemnificationGuaranteeMember
2019-12-31
0000831259
fcx:PTIndonesiaAsahanAluminiumPerseroInalumMember
srt:ScenarioForecastMember
fcx:PtFreeportIndonesiaMember
2023-01-01
0000831259
fcx:FreeportMcMoRanOilGasMember
2019-01-01
2019-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
2018-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokMember
2019-01-01
2019-12-31
0000831259
fcx:PTIndonesiaPapuaMetaldanMineralMember
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokLowerZoneMember
2019-01-01
2019-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokUpperZoneMember
2019-11-01
0000831259
fcx:IndonesiaTaxingAuthorityMember
2018-12-21
2018-12-21
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
2018-01-01
2018-12-31
0000831259
fcx:PTIndonesiaPapuaMetaldanMineralMember
srt:ScenarioForecastMember
fcx:PtFreeportIndonesiaMember
2023-01-01
0000831259
fcx:FreeportMcMoRanOilGasMember
2017-01-01
2017-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
2016-11-30
0000831259
fcx:RioTintoMember
fcx:RioTintoShareInJointVentureMember
2018-12-21
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
fcx:CopperMember
fcx:RioTintoShareInJointVentureMember
2018-12-21
0000831259
2018-12-21
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
srt:ScenarioForecastMember
2023-01-01
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokMember
2019-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TFHoldingsLimitedMember
fcx:CopperMember
2016-11-30
0000831259
fcx:RioTintoMember
fcx:RioTintoShareInJointVentureMember
2019-01-01
2019-12-31
0000831259
fcx:LundinMiningCorporationMember
us-gaap:DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember
fcx:FreeportCobaltMember
2019-01-01
2019-12-31
0000831259
fcx:PTIndonesiaAsahanAluminiumPerseroInalumMember
fcx:PtFreeportIndonesiaMember
2018-12-21
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
fcx:CorporateAndEliminationsMember
fcx:GulfofMexicoShelfandMaddenpropertiesMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:GoldMember
fcx:RioTintoShareInJointVentureMember
2018-12-21
0000831259
fcx:PTIndonesiaAsahanAluminiumPerseroInalumMember
fcx:InterestInPTIndonesiaPapuaMetalDanMineralMember
2018-12-21
0000831259
fcx:PtFreeportIndonesiaSubsidiaryMember
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
srt:ScenarioForecastMember
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokUpperZoneMember
us-gaap:SubsequentEventMember
2022-03-31
2022-03-31
0000831259
fcx:PTIndonesiaPapuaMetaldanMineralMember
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
fcx:CorporateAndEliminationsMember
fcx:GulfofMexicoShelfandMaddenpropertiesMember
2017-01-01
2017-12-31
0000831259
fcx:PTFIMember
fcx:RioTintoShareInJointVentureMember
2018-12-21
0000831259
fcx:PTFIMember
fcx:RioTintoShareInJointVentureMember
fcx:MineralReserveMember
2018-12-21
0000831259
fcx:PTFIMember
fcx:RioTintoShareInJointVentureMember
fcx:MineDevelopmentInfrastructureandOtherMember
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
fcx:RioTintoShareInJointVentureMember
2018-12-21
0000831259
fcx:FreeportMcMoRanOilGasMember
srt:ScenarioForecastMember
fcx:OnshoreCaliforniaMember
2020-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:OnshoreCaliforniaMember
2019-12-31
0000831259
fcx:SumitomoMetalMiningLtd.andSMMMorenciInc.Member
2019-12-31
0000831259
fcx:AtlanticCopperMember
2019-12-31
0000831259
fcx:RioTintoShareInJointVentureMember
2019-01-01
2019-12-31
0000831259
fcx:ElAbraSouthAmericaMember
2019-12-31
0000831259
fcx:MorenciMember
2019-12-31
0000831259
fcx:PTIndocopperInvestamaMember
fcx:PtFreeportIndonesiaMember
2018-12-21
0000831259
fcx:PTIndocopperInvestamaMember
2018-12-21
0000831259
fcx:CerroVerdeSouthAmericaMember
2019-12-31
0000831259
fcx:InvestmentInSubsidiaryFmcMember
2019-01-01
2019-12-31
0000831259
fcx:SMMMorenciInc.Member
fcx:MorenciMember
2016-05-31
0000831259
fcx:RioTintoShareInJointVentureMember
srt:ScenarioForecastMember
2022-01-01
2022-12-31
0000831259
fcx:FreeportMineralsCorporationMember
2019-12-31
0000831259
srt:SubsidiariesMember
fcx:FreeportMineralsCorporationMember
2019-12-31
0000831259
fcx:SumitomoMetalMiningCo.Ltd.Member
fcx:MorenciMember
2019-12-31
0000831259
fcx:OtherNorthAmericaMember
2019-12-31
0000831259
fcx:SumitomoMetalMiningCo.Ltd.Member
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2019-12-31
0000831259
fcx:SumitomoMetalMiningLtd.andSMMMorenciInc.Member
2019-01-01
2019-12-31
0000831259
fcx:CobaltMember
2019-01-01
2019-12-31
0000831259
fcx:MolybdenumMember
2019-01-01
2019-12-31
0000831259
fcx:ValueBeyondProvenAndProbableReservesMember
2008-01-01
2008-12-30
0000831259
fcx:MiningOperationsMember
2017-01-01
2017-12-31
0000831259
fcx:MiningOperationsMember
2018-01-01
2018-12-31
0000831259
fcx:ProvenAndProbableReservesMember
2007-01-01
2019-12-31
0000831259
fcx:ProvenAndProbableReservesMember
2018-01-01
2018-12-31
0000831259
fcx:MiningOperationsMember
2019-01-01
2019-12-31
0000831259
us-gaap:OilAndGasPropertiesMember
2019-12-31
0000831259
fcx:ValueBeyondProvenAndProbableReservesMember
2007-01-01
2007-12-31
0000831259
fcx:ProvenAndProbableReservesMember
2019-01-01
2019-12-31
0000831259
us-gaap:SegmentDiscontinuedOperationsMember
2007-01-01
2007-12-31
0000831259
us-gaap:ConstructionInProgressMember
2018-12-31
0000831259
us-gaap:TransportationEquipmentMember
2019-12-31
0000831259
us-gaap:TransportationEquipmentMember
2018-12-31
0000831259
us-gaap:BuildingAndBuildingImprovementsMember
2019-12-31
0000831259
us-gaap:MachineryAndEquipmentMember
2019-12-31
0000831259
us-gaap:BuildingAndBuildingImprovementsMember
2018-12-31
0000831259
us-gaap:MachineryAndEquipmentMember
2018-12-31
0000831259
fcx:ProvenAndProbableReservesMember
2019-12-31
0000831259
us-gaap:MineDevelopmentMember
2019-12-31
0000831259
us-gaap:MineDevelopmentMember
2018-12-31
0000831259
us-gaap:ConstructionInProgressMember
2019-12-31
0000831259
fcx:ProvenAndProbableReservesMember
2018-12-31
0000831259
us-gaap:OilAndGasPropertiesMember
2018-12-31
0000831259
fcx:ValueBeyondProvenAndProbableReservesMember
2019-12-31
0000831259
fcx:ValueBeyondProvenAndProbableReservesMember
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2018-12-31
0000831259
fcx:CerroVerdeMember
2018-12-31
0000831259
fcx:PTSmeltingMember
2018-12-31
0000831259
fcx:CerroVerdeMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2019-12-31
0000831259
fcx:PTSmeltingMember
2019-12-31
0000831259
us-gaap:DiscontinuedOperationsDisposedOfBySaleMember
fcx:TimokLowerZoneMember
2018-12-31
0000831259
fcx:PTSmeltingMember
2018-01-01
2018-12-31
0000831259
stpr:NM
2018-12-31
0000831259
stpr:NM
2019-12-31
0000831259
fcx:SeniorNotesdue20345.4percentMember
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:SeniorNotesdue20214percentMember
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcmoranCorporationMember
fcx:SeniorNotesDue2034Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesdue20295.25Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
2018-12-31
0000831259
fcx:A355SeniorNotesDue2022Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesdue20275Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcmoranCorporationMember
fcx:DebenturesDue2027Member
us-gaap:SubordinatedDebtMember
2019-12-31
0000831259
us-gaap:RevolvingCreditFacilityMember
us-gaap:LineOfCreditMember
2018-12-31
0000831259
fcx:A5450SeniorNotesDueMarch2043Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A3100SeniorNotesDueMarch2020Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesdue20244point55percentMember
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcmoranCorporationMember
fcx:SeniorNotesDue2034Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:OtherDebtMember
2019-12-31
0000831259
fcx:A3100SeniorNotesDueMarch2020Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
2019-12-31
0000831259
fcx:A5450SeniorNotesDueMarch2043Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A355SeniorNotesDue2022Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:SeniorNotesdue20275Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesdue20295.25Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:FreeportMcmoranCorporationMember
fcx:DebenturesDue2027Member
us-gaap:SubordinatedDebtMember
2018-12-31
0000831259
fcx:OtherDebtMember
2018-12-31
0000831259
fcx:A3875SeniorNotesDueMarch2023Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:SeniorNotesdue20345.4percentMember
us-gaap:SeniorNotesMember
2018-12-31
0000831259
us-gaap:RevolvingCreditFacilityMember
us-gaap:LineOfCreditMember
2019-12-31
0000831259
fcx:SeniorNotesdue20214percentMember
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A6.875SeniorNotesdue2023Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesdue20244point55percentMember
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:FreeportMcmoranCorporationMember
fcx:SeniorNotesDue2031Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A3875SeniorNotesDueMarch2023Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A6.875SeniorNotesdue2023Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcmoranCorporationMember
fcx:SeniorNotesDue2031Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesDue2021Member
us-gaap:SeniorNotesMember
2019-01-01
2019-12-31
0000831259
us-gaap:SeniorNotesMember
2019-12-31
0000831259
us-gaap:SeniorNotesMember
2019-01-01
2019-12-31
0000831259
fcx:A3100SeniorNotesDueMarch2020Member
us-gaap:SeniorNotesMember
2019-01-01
2019-12-31
0000831259
fcx:SeniorNotesDue2023Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:SeniorNotesDue2023Member
us-gaap:SeniorNotesMember
2019-01-01
2019-12-31
0000831259
fcx:A355SeniorNotesDue2022Member
us-gaap:SeniorNotesMember
2019-01-01
2019-12-31
0000831259
fcx:SeniorNotesDue2021Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:ShareholderLoanMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:RevolvingCreditFacilityMember
us-gaap:LineOfCreditMember
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:DebtInstrumentPaymentPeriodThreeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2019-01-01
2019-12-31
0000831259
fcx:SeniorNotesdue20295.25Member
2019-08-15
0000831259
us-gaap:RevolvingCreditFacilityMember
fcx:AmendedCreditFacilityMaturingApril202023Member
us-gaap:LineOfCreditMember
2019-05-02
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2017-06-01
2017-06-30
0000831259
fcx:SeniorNotesDue2022Member
2019-08-15
0000831259
fcx:CerroVerdeMember
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
2019-08-15
2019-08-15
0000831259
2019-11-01
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:SeniorNotesMember
2019-01-01
2019-12-31
0000831259
us-gaap:RevolvingCreditFacilityMember
fcx:AmendedCreditFacilityMaturingApril202024Member
us-gaap:LineOfCreditMember
2019-05-02
0000831259
srt:MinimumMember
2019-01-01
2019-12-31
0000831259
2019-01-01
2019-10-31
0000831259
fcx:SeniorNotesdue20275Member
2019-08-15
0000831259
us-gaap:LetterOfCreditMember
us-gaap:LineOfCreditMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:SeniorNotesMember
2018-01-01
2018-12-31
0000831259
fcx:CerroVerdeMember
fcx:ShareholderLoanMember
2014-12-31
0000831259
fcx:SeniorNotesdue20295.25Member
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2014-03-31
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2019-12-31
0000831259
srt:MaximumMember
2019-01-01
2019-12-31
0000831259
srt:MaximumMember
srt:ScenarioForecastMember
2021-10-01
2021-12-31
0000831259
fcx:CerroVerdeMember
fcx:DebtInstrumentPaymentPeriodThreeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2018-01-01
2018-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2017-06-30
0000831259
us-gaap:RevolvingCreditFacilityMember
us-gaap:LineOfCreditMember
2019-05-02
0000831259
fcx:SeniorNotesDue2023Member
2019-08-15
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:DebtInstrumentPaymentPeriodTwoMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:DebtInstrumentPaymentPeriodOneMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2019-01-01
2019-12-31
0000831259
fcx:SeniorNotesdue20275Member
2019-12-31
0000831259
fcx:SeniorNotesDue2021Member
2019-08-15
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2017-06-29
0000831259
fcx:SeniorNotesDue2022Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:SeniorNotesDue2022Member
us-gaap:SeniorNotesMember
2018-01-01
2018-12-31
0000831259
fcx:A6.875SeniorNotesdue2023Member
us-gaap:SeniorNotesMember
2018-01-01
2018-12-31
0000831259
us-gaap:SeniorNotesMember
2018-01-01
2018-12-31
0000831259
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.75SeniorNotesdue2022Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:A2375SeniorNotesDueMarch2018Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.75SeniorNotesdue2022Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:A2375SeniorNotesDueMarch2018Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2017-01-01
2017-12-31
0000831259
fcx:FreeportMcMoRanOilGasLLCMember
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2017-12-31
0000831259
2019-05-02
2019-05-02
0000831259
fcx:CerroVerdeMember
us-gaap:LineOfCreditMember
us-gaap:LineOfCreditMember
2014-01-01
2014-03-31
0000831259
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A6.75SeniorNotesdue2022Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2018-12-31
0000831259
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A6.75SeniorNotesdue2022Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:SeniorNotesdue20172point3percentMember
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A2.15SeniorNotesDue2017Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:A6.75SeniorNotesdue2022Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:A6.875SeniorNotesdue2023Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A2375SeniorNotesDueMarch2018Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A6.5SeniorNotesdue2020Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:A6.125SeniorNotesdue2019Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:A6.625SeniorNotesdue2021Member
us-gaap:SeniorNotesMember
2019-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:CashAndReceivablesMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:NotesPayableOtherPayablesMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:ForeignPlanMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignPlanMember
2017-01-01
2017-12-31
0000831259
us-gaap:ForeignPlanMember
2018-01-01
2018-12-31
0000831259
fcx:A401KPlanMember
2018-12-31
0000831259
us-gaap:FixedIncomeInvestmentsMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:MeasurementInputDiscountRateMember
us-gaap:DomesticPlanMember
2018-01-01
2018-12-31
0000831259
us-gaap:DomesticPlanMember
2017-12-31
0000831259
us-gaap:DomesticPlanMember
2018-01-01
2018-12-31
0000831259
fcx:A401KPlanMember
2019-12-31
0000831259
us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember
2019-12-31
0000831259
us-gaap:DomesticPlanMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignPlanMember
2017-12-31
0000831259
us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember
2018-12-31
0000831259
us-gaap:OneTimeTerminationBenefitsMember
2017-01-01
2017-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember
2019-01-01
2019-12-31
0000831259
fcx:AlternativeInvestmentsMember
us-gaap:DomesticPlanMember
2019-12-31
0000831259
us-gaap:MeasurementInputMortalityRateMember
us-gaap:DomesticPlanMember
2018-01-01
2018-12-31
0000831259
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:MeasurementInputCensusDataMember
us-gaap:DomesticPlanMember
2018-01-01
2018-12-31
0000831259
us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember
2017-01-01
2017-12-31
0000831259
us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember
2019-01-01
2019-12-31
0000831259
us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember
2018-01-01
2018-12-31
0000831259
us-gaap:PostemploymentRetirementBenefitsMember
2018-12-31
0000831259
us-gaap:PostemploymentRetirementBenefitsMember
2019-12-31
0000831259
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:DomesticPlanMember
2017-01-01
2017-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:EmergingMarketsMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalFixedIncomeSecuritiesMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:EmergingMarketsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:EmergingMarketsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalFixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:NotesPayableOtherPayablesMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateInvestmentMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:InternationalSmallCapEquityMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:RealEstateMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalFixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GloballargecapequitysecuritiesDomain
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:CorporateBondSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:OtherTypesOfInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:ShortTermInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:EmergingMarketsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalFixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:GlobalEquityMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:UsSmallCapCoreMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
fcx:CashAndReceivablesMember
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:PrivateEquityFundsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:DomesticPlanMember
2018-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:NotesPayableOtherPayablesMember
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:CashAndReceivablesMember
us-gaap:ForeignPlanMember
2019-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2019-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:ForeignPlanMember
2018-12-31
0000831259
fcx:CashAndReceivablesMember
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:MutualFundMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:NotesPayableOtherPayablesMember
us-gaap:ForeignPlanMember
2016-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:ForeignPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel1Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
fcx:TotalDebtandEquityInvestmentsMember
us-gaap:FairValueInputsLevel2Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:CommonStockMember
us-gaap:ForeignPlanMember
2018-12-31
0000831259
us-gaap:ForeignGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
us-gaap:ForeignPlanMember
2018-12-31
0000831259
fcx:PtFreeportIndonesiaSubsidiaryMember
us-gaap:PensionPlansDefinedBenefitMember
2018-01-01
2018-12-31
0000831259
fcx:FcxMember
us-gaap:PensionPlansDefinedBenefitMember
2019-01-01
2019-12-31
0000831259
fcx:FcxMember
us-gaap:PensionPlansDefinedBenefitMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaSubsidiaryMember
us-gaap:PensionPlansDefinedBenefitMember
2019-01-01
2019-12-31
0000831259
us-gaap:PensionPlansDefinedBenefitMember
2018-01-01
2018-12-31
0000831259
us-gaap:PensionPlansDefinedBenefitMember
2019-01-01
2019-12-31
0000831259
fcx:RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember
2019-01-01
2019-12-31
0000831259
fcx:RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember
2018-12-31
0000831259
fcx:RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember
2019-12-31
0000831259
fcx:CashSettledRestrictedStockUnitsRSUsandPerformanceShareUnitsPSUsMember
2019-12-31
0000831259
fcx:CashSettledRestrictedStockUnitsRSUsandPerformanceShareUnitsPSUsMember
2019-01-01
2019-12-31
0000831259
fcx:CashSettledRestrictedStockUnitsRSUsandPerformanceShareUnitsPSUsMember
2018-12-31
0000831259
us-gaap:EmployeeStockOptionMember
2019-01-01
2019-12-31
0000831259
us-gaap:EmployeeStockOptionMember
2018-01-01
2018-12-31
0000831259
us-gaap:EmployeeStockOptionMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2017-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2019-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2019-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2018-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2018-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2016-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2017-01-01
2017-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:AccumulatedTranslationAdjustmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2017-01-01
2017-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2019-01-01
2019-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2017-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember
2017-12-31
0000831259
us-gaap:AccumulatedTranslationAdjustmentMember
2016-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember
2016-12-31
0000831259
srt:MaximumMember
us-gaap:PerformanceSharesMember
2019-01-01
2019-12-31
0000831259
srt:MaximumMember
us-gaap:PerformanceSharesMember
2017-01-01
2017-12-31
0000831259
us-gaap:PerformanceSharesMember
2017-01-01
2017-12-31
0000831259
fcx:CashSettledRestrictedStockUnitsRSUsandPerformanceShareUnitsPSUsMember
2017-01-01
2017-12-31
0000831259
us-gaap:RestrictedStockUnitsRSUMember
2019-01-01
2019-12-31
0000831259
us-gaap:PerformanceSharesMember
2019-01-01
2019-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember
2018-01-01
2018-12-31
0000831259
fcx:RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember
2018-01-01
2018-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember
2018-01-01
2018-12-31
0000831259
fcx:CashSettledRestrictedStockUnitsRSUsandPerformanceShareUnitsPSUsMember
2018-01-01
2018-12-31
0000831259
us-gaap:PerformanceSharesMember
2018-01-01
2018-12-31
0000831259
us-gaap:EmployeeStockOptionMember
2019-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember
2017-01-01
2017-12-31
0000831259
2019-12-18
2019-12-18
0000831259
fcx:RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember
2017-01-01
2017-12-31
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember
2019-01-01
2019-12-31
0000831259
srt:MinimumMember
us-gaap:PerformanceSharesMember
2017-01-01
2017-12-31
0000831259
srt:MinimumMember
us-gaap:PerformanceSharesMember
2019-01-01
2019-12-31
0000831259
srt:MinimumMember
fcx:CashSettledRestrictedStockUnitsRSUsandPerformanceShareUnitsPSUsMember
2019-01-01
2019-12-31
0000831259
us-gaap:CostOfSalesMember
2019-01-01
2019-12-31
0000831259
us-gaap:SellingGeneralAndAdministrativeExpensesMember
2019-01-01
2019-12-31
0000831259
us-gaap:CostOfSalesMember
2017-01-01
2017-12-31
0000831259
us-gaap:SellingGeneralAndAdministrativeExpensesMember
2018-01-01
2018-12-31
0000831259
us-gaap:SellingGeneralAndAdministrativeExpensesMember
2017-01-01
2017-12-31
0000831259
us-gaap:CostOfSalesMember
2018-01-01
2018-12-31
0000831259
fcx:OutsideDirectorsMember
2018-01-01
2018-09-30
0000831259
us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
us-gaap:TaxYear2017Member
2017-01-01
2017-01-01
0000831259
fcx:TimokLowerZoneMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:IndonesiaTaxingAuthorityMember
fcx:TaxYear2019AndThereafterMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:PriortoSeptember2014Member
2019-01-01
2019-12-31
0000831259
us-gaap:DomesticCountryMember
2018-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
us-gaap:SettlementWithTaxingAuthorityMember
fcx:TaxYears2012to2018Member
2019-12-30
2019-12-30
0000831259
us-gaap:DomesticCountryMember
2019-12-31
0000831259
fcx:AlternativeMinimumTaxCreditMember
2017-01-01
2017-12-31
0000831259
fcx:ForeignTaxCreditsMember
2019-01-01
2019-12-31
0000831259
us-gaap:StateAndLocalJurisdictionMember
2019-12-31
0000831259
fcx:AlternativeMinimumTaxCreditMember
2018-01-01
2018-12-31
0000831259
us-gaap:ValuationAllowanceOperatingLossCarryforwardsMember
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
us-gaap:TaxYear2014Member
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IncomeExpenseBenefitMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:TaxYears2013To2017Member
2019-01-01
2019-12-31
0000831259
srt:MinimumMember
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:TaxYears2018To2023Member
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:TaxYear2022andThereafterMember
2019-01-01
2019-12-31
0000831259
fcx:MinimumTaxCreditCarryforwardsMember
2018-01-01
2018-12-31
0000831259
us-gaap:ForeignCountryMember
us-gaap:TaxAuthoritySpainMember
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
fcx:TaxYear2019AndThereafterMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:OtherNonoperatingIncomeExpenseMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:TaxAuthorityInPapauIndonesiaMember
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:TaxYear2020AndThereafterMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:Taxyears2017through2021Member
2019-01-01
2019-12-31
0000831259
fcx:NetOperatingLossesMember
2019-01-01
2019-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2019-01-01
2019-12-31
0000831259
srt:MaximumMember
us-gaap:ForeignCountryMember
fcx:ServiceofInternalTaxesSiMember
fcx:TaxYears2018To2023Member
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:InterestExpenseMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
us-gaap:TaxYear2007Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
us-gaap:TaxYear2013Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
us-gaap:TaxYear2015Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
fcx:TaxYear20082010toTaxYear2011Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
fcx:RelatingTo2005Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
us-gaap:TaxYear2014Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
us-gaap:TaxYear2012Member
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianTaxAuthorityMember
us-gaap:TaxYear2016Member
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
2018-01-01
2018-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
2017-01-01
2017-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
2017-01-01
2019-12-31
0000831259
fcx:NewMexicoArizonaColoradoandOtherStatesMember
us-gaap:FinancialGuaranteeMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
2019-12-31
0000831259
fcx:CerroVerdeMember
2014-01-01
2014-01-01
0000831259
fcx:PtFreeportIndonesiaMember
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
fcx:TaxAuthorityInPapauIndonesiaMember
fcx:PenaltiesMember
2018-12-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
2017-04-01
2018-12-21
0000831259
fcx:PtFreeportIndonesiaMember
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
srt:ScenarioForecastMember
fcx:TaxAuthorityInPapauIndonesiaMember
fcx:PenaltiesMember
2021-02-01
2021-02-28
0000831259
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
2018-12-01
2018-12-31
0000831259
fcx:CerroVerdeMember
2019-01-01
2019-12-31
0000831259
2017-01-17
0000831259
fcx:PtFreeportIndonesiaMember
fcx:MemorandumofUnderstandingwiththeIndonesianGovernmentMember
fcx:IndonesianTaxAuthorityMember
2017-04-01
2018-12-21
0000831259
fcx:UraniumMiningSitesonTribalLandMember
2017-01-01
2017-12-31
0000831259
srt:MaximumMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianSupremeCourtMember
fcx:Theyear2005andtheyear2007Member
2018-01-01
2018-12-31
0000831259
fcx:ColoradoEnvironmentalAndReclamationProgramsMember
2019-12-31
0000831259
fcx:ArizonaEnvironmentalAndReclamationProgramsMember
2019-12-31
0000831259
fcx:JohnsonJohnsonandCyprusMinesMember
fcx:AsbestosContaminationinTalcBasedPersonalCareProductsMember
us-gaap:PendingLitigationMember
us-gaap:DamagesFromProductDefectsMember
2019-03-13
0000831259
fcx:PtFreeportIndonesiaMember
fcx:IndonesianSupremeCourtMember
fcx:Theyear2005andtheyear2007Member
2019-01-01
2019-12-31
0000831259
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
2019-05-01
2019-05-31
0000831259
fcx:CerroVerdeMember
us-gaap:ParentMember
fcx:TaxYear2012to2013Member
2018-01-01
2018-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
fcx:October2011toTaxYear2013Member
2017-01-01
2017-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:MemorandumofUnderstandingwiththeIndonesianGovernmentMember
fcx:IndonesianTaxAuthorityMember
2018-01-01
2018-12-31
0000831259
fcx:LouisianaParishesCoastalErosionCasesMember
us-gaap:SettledLitigationMember
2019-09-30
0000831259
fcx:MineClosureMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:DisputedRoyaltyAssessmentsMember
fcx:CerroVerdeMember
fcx:October2011toTaxYear2013Member
2017-01-01
2017-12-31
0000831259
fcx:CerroVerdeMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:MemorandumofUnderstandingwiththeIndonesianGovernmentIndonesiaSupremeCourtAppealMember
fcx:IndonesianTaxAuthorityMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
fcx:TaxYear2006ToSeptember2011Member
2017-01-01
2017-12-31
0000831259
fcx:NewMexicoEnvironmentalAndReclamationProgramsMember
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsMember
fcx:CerroVerdeMember
fcx:December2006toTaxYear2013Member
2017-01-01
2017-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
fcx:TaxAuthorityInPapauIndonesiaMember
fcx:PenaltiesMember
2019-05-01
2019-05-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
us-gaap:JudicialRulingMember
fcx:RoyaltyAssessmentsMember
fcx:TaxYear2006ToTaxYear2008Member
2014-01-01
2018-12-31
0000831259
fcx:CyprusMinesMember
fcx:AsbestosContaminationinTalcBasedPersonalCareProductsMember
us-gaap:PendingLitigationMember
us-gaap:DamagesFromProductDefectsMember
2019-03-13
0000831259
fcx:PtFreeportIndonesiaMember
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
fcx:TaxAuthorityInPapauIndonesiaMember
fcx:PenaltiesMember
2019-10-01
2019-10-31
0000831259
fcx:FCXAffiliatesMember
fcx:LouisianaParishesCoastalErosionCasesMember
us-gaap:SettledLitigationMember
2019-09-30
0000831259
fcx:FCXAffiliatesMember
fcx:LouisianaParishesCoastalErosionCasesMember
us-gaap:SettledLitigationMember
2019-07-01
2019-09-30
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
us-gaap:JudicialRulingMember
us-gaap:UnfavorableRegulatoryActionMember
fcx:TaxYear2009toTaxYear2013Member
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:MemorandumofUnderstandingwiththeIndonesianGovernmentMember
fcx:IndonesianTaxAuthorityMember
2017-01-01
2017-12-31
0000831259
fcx:FCXAffiliatesMember
fcx:LouisianaParishesCoastalErosionCasesMember
srt:ScenarioForecastMember
us-gaap:SettledLitigationMember
2023-01-01
2023-12-31
0000831259
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
fcx:CerroVerdeMember
fcx:October2011throughSeptember2012Member
2019-12-31
0000831259
fcx:MineReclamationMember
2019-01-01
2019-12-31
0000831259
fcx:ElAbraMember
2019-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
us-gaap:JudicialRulingMember
us-gaap:UnfavorableRegulatoryActionMember
fcx:December2006toTaxYear2013Member
2017-01-01
2017-12-31
0000831259
fcx:CerroVerdeMember
2019-12-31
0000831259
fcx:BoroughofCarteretMember
2017-01-01
2017-12-31
0000831259
fcx:MOEFFrameworkMember
2018-01-01
2018-12-31
0000831259
fcx:NewMexicoArizonaColoradoandOtherStatesMember
2019-12-31
0000831259
fcx:FCXAffiliatesMember
fcx:LouisianaParishesCoastalErosionCasesMember
us-gaap:SettledLitigationMember
2019-09-01
2019-09-30
0000831259
fcx:CerroVerdeMember
us-gaap:ParentMember
2019-01-01
2019-12-31
0000831259
us-gaap:SuretyBondMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:NoncontrollingInterestMember
fcx:TaxYear2012to2013Member
2018-01-01
2018-12-31
0000831259
srt:MinimumMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaEnvironmentalAndReclamationProgramsMember
2019-12-31
0000831259
fcx:PinalCreekAZNewtownCreekNYSmelterSitesinArizonaKansasNewJerseyOklahomaPennsylvaniaandUraniumMininginWesterUnitedStatesMember
2019-12-31
0000831259
fcx:NewtownCreekMember
2017-01-01
2017-12-31
0000831259
fcx:CerroVerdeMember
fcx:TaxYear2012to2013Member
2018-01-01
2018-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
fcx:RoyaltyAssessmentsTaxesMember
fcx:CerroVerdeMember
fcx:October2011toTaxYear2013Member
2017-01-01
2017-12-31
0000831259
2017-01-17
2017-01-17
0000831259
fcx:CerroVerdeMember
us-gaap:NoncontrollingInterestMember
2019-01-01
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
us-gaap:TaxYear2012Member
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
fcx:TaxYear2014toTaxYear2018Member
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
us-gaap:TaxYear2010Member
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
us-gaap:TaxYear2011Member
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
fcx:TaxYear2003toTaxYear2008Member
2019-12-31
0000831259
fcx:CerroVerdeMember
fcx:NationalSuperintendencyofTaxAdministrationSUNATMember
us-gaap:TaxYear2009Member
2019-12-31
0000831259
srt:ScenarioForecastMember
2019-02-16
2020-03-08
0000831259
fcx:PtFreeportIndonesiaMember
fcx:AnnualSurfaceWaterTaxPaymentsMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:CopperMember
2019-12-31
0000831259
us-gaap:ElectricityMember
2019-12-31
0000831259
fcx:TransportationMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:SilverMember
2019-12-31
0000831259
fcx:IndonesiaTaxingAuthorityMember
2019-01-01
2019-12-31
0000831259
fcx:CopperConcentratesAndCathodesMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:MemorandumofUnderstandingwiththeIndonesianGovernmentIndonesiaSupremeCourtAppealMember
fcx:IndonesianTaxAuthorityMember
2019-07-01
2019-09-30
0000831259
fcx:CobaltMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:SuretyBondMember
us-gaap:ConstructionContractsMember
2019-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:DesignatedAsHedgingInstrumentMember
2019-12-31
2019-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:DesignatedAsHedgingInstrumentMember
2019-12-31
0000831259
us-gaap:BankTimeDepositsMember
2018-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:NondesignatedMember
2019-12-31
2019-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:NondesignatedMember
2019-12-31
0000831259
us-gaap:BankTimeDepositsMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:DesignatedAsHedgingInstrumentMember
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
us-gaap:LongMember
fcx:CopperMember
2019-12-31
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
us-gaap:ShortMember
us-gaap:GoldMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
us-gaap:ShortMember
fcx:CopperMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
us-gaap:ShortMember
fcx:CopperMember
2019-12-31
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
us-gaap:LongMember
fcx:CopperMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:NondesignatedMember
us-gaap:ShortMember
us-gaap:GoldMember
2019-12-31
2019-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:NondesignatedMember
us-gaap:CostOfSalesMember
2019-01-01
2019-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
fcx:GoldandotherMember
2019-01-01
2019-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:NondesignatedMember
us-gaap:CostOfSalesMember
2017-01-01
2017-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
fcx:CopperMember
2019-01-01
2019-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
fcx:CopperMember
2017-01-01
2017-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
fcx:GoldandotherMember
2017-01-01
2017-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
fcx:GoldandotherMember
2018-01-01
2018-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
fcx:CopperMember
2018-01-01
2018-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:NondesignatedMember
us-gaap:CostOfSalesMember
2018-01-01
2018-12-31
0000831259
us-gaap:CommodityContractMember
2018-12-31
0000831259
fcx:NetAccountsReceivableMember
2018-12-31
0000831259
us-gaap:CommodityContractMember
2019-12-31
0000831259
us-gaap:AccountsPayableAndAccruedLiabilitiesMember
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
2018-12-31
0000831259
us-gaap:OtherCurrentAssetsMember
2019-12-31
0000831259
fcx:NetAccountsReceivableMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
2019-12-31
0000831259
us-gaap:OtherCurrentAssetsMember
2018-12-31
0000831259
us-gaap:AccountsPayableAndAccruedLiabilitiesMember
2019-12-31
0000831259
us-gaap:CommodityContractMember
2018-01-01
2018-12-31
0000831259
us-gaap:CommodityContractMember
2017-01-01
2017-12-31
0000831259
us-gaap:CommodityContractMember
2019-01-01
2019-12-31
0000831259
fcx:FmcsCopperFuturesAndSwapContractsMember
us-gaap:FutureMember
us-gaap:NondesignatedMember
2019-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:CommodityContractMember
us-gaap:NondesignatedMember
2018-12-31
0000831259
fcx:FmcsCopperFuturesAndSwapContractsMember
us-gaap:FutureMember
us-gaap:NondesignatedMember
2018-12-31
0000831259
us-gaap:ForwardContractsMember
us-gaap:CommodityContractMember
us-gaap:NondesignatedMember
2019-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember
2019-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:FutureMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:FutureMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:FutureMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:FutureMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:FutureMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember
2019-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2017-01-01
2017-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2019-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2017-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2019-01-01
2019-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2018-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2018-01-01
2018-12-31
0000831259
fcx:GulfofMexicoContingentConsiderationMember
2016-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember
2018-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:EmbeddedDerivativeFinancialInstrumentsMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:CorporateDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:AssetBackedSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:FixedIncomeSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
fcx:AfricaandonshoreCaliforniaMember
us-gaap:CommodityContractMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:MunicipalBondsMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel1Member
2018-12-31
0000831259
us-gaap:USGovernmentDebtSecuritiesMember
us-gaap:FairValueInputsLevel3Member
2018-12-31
0000831259
us-gaap:MoneyMarketFundsMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:EquitySecuritiesMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:MortgageBackedSecuritiesMember
us-gaap:FairValueInputsLevel2Member
2018-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel2Member
2019-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel3Member
2019-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:FairValueInputsLevel1Member
2019-12-31
0000831259
us-gaap:CommodityContractMember
us-gaap:EstimateOfFairValueFairValueDisclosureMember
2019-12-31
0000831259
us-gaap:BankTimeDepositsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
srt:CrudeOilMember
fcx:OnshoreCaliforniaMember
2016-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:DeepwaterGulfofMexicoInterestsMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:OnshoreCaliforniaMember
2019-01-01
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:DeepwaterGulfofMexicoInterestsMember
2018-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
srt:CrudeOilMember
fcx:OnshoreCaliforniaMember
2018-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:OnshoreCaliforniaMember
2018-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:OnshoreCaliforniaMember
2018-01-01
2018-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:OnshoreCaliforniaMember
2016-12-31
0000831259
us-gaap:BankTimeDepositsMember
us-gaap:CarryingReportedAmountFairValueDisclosureMember
2018-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:OnshoreCaliforniaMember
2016-01-01
2016-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
srt:CrudeOilMember
fcx:OnshoreCaliforniaMember
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
fcx:DeepwaterGulfofMexicoInterestsMember
2016-12-31
0000831259
fcx:PTSmeltingMember
us-gaap:RevenueFromContractWithCustomerMember
2019-01-01
2019-12-31
0000831259
fcx:NoncontrollingInterestOwnersOfSouthAmericaMiningOperationsMember
srt:AffiliatedEntityMember
2019-01-01
2019-12-31
0000831259
fcx:NoncontrollingInterestOwnersOfSouthAmericaMiningOperationsMember
srt:AffiliatedEntityMember
2017-01-01
2017-12-31
0000831259
fcx:NoncontrollingInterestOwnersOfSouthAmericaMiningOperationsMember
srt:AffiliatedEntityMember
2018-01-01
2018-12-31
0000831259
fcx:PTSmeltingMember
2019-01-01
2019-12-31
0000831259
srt:NorthAmericaMember
fcx:InventoryCopperMetalProductionMember
us-gaap:ProductConcentrationRiskMember
fcx:MorenciMember
2019-01-01
2019-12-31
0000831259
srt:SouthAmericaMember
us-gaap:CostOfGoodsProductLineMember
us-gaap:SupplierConcentrationRiskMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
fcx:PTSmeltingMember
us-gaap:RevenueFromContractWithCustomerMember
2018-01-01
2018-12-31
0000831259
srt:NorthAmericaMember
fcx:InventoryCopperMetalProductionMember
us-gaap:ProductConcentrationRiskMember
fcx:BagdadMember
2019-01-01
2019-12-31
0000831259
fcx:PTSmeltingMember
srt:AffiliatedEntityMember
2017-01-01
2017-12-31
0000831259
us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsMember
2019-01-01
2019-12-31
0000831259
fcx:PTSmeltingMember
srt:AffiliatedEntityMember
2018-01-01
2018-12-31
0000831259
country:ID
us-gaap:CostOfGoodsProductLineMember
us-gaap:SupplierConcentrationRiskMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
srt:NorthAmericaMember
us-gaap:CostOfGoodsProductLineMember
us-gaap:SupplierConcentrationRiskMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
srt:SouthAmericaMember
fcx:InventoryCopperMetalProductionMember
us-gaap:ProductConcentrationRiskMember
fcx:CerroVerdeMember
2019-01-01
2019-12-31
0000831259
fcx:PTSmeltingMember
srt:AffiliatedEntityMember
2019-01-01
2019-12-31
0000831259
us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember
2019-01-01
2019-12-31
0000831259
country:PH
2018-01-01
2018-12-31
0000831259
country:US
2019-01-01
2019-12-31
0000831259
country:PH
2019-01-01
2019-12-31
0000831259
country:ID
2018-01-01
2018-12-31
0000831259
fcx:OthersIndividuallyImmaterialCountriesMember
2017-01-01
2017-12-31
0000831259
country:BM
2017-01-01
2017-12-31
0000831259
country:CH
2019-01-01
2019-12-31
0000831259
country:DE
2018-01-01
2018-12-31
0000831259
country:CL
2018-01-01
2018-12-31
0000831259
fcx:OthersIndividuallyImmaterialCountriesMember
2019-01-01
2019-12-31
0000831259
country:KR
2017-01-01
2017-12-31
0000831259
country:GB
2017-01-01
2017-12-31
0000831259
country:BM
2018-01-01
2018-12-31
0000831259
country:IN
2017-01-01
2017-12-31
0000831259
country:CL
2019-01-01
2019-12-31
0000831259
country:US
2017-01-01
2017-12-31
0000831259
country:KR
2018-01-01
2018-12-31
0000831259
country:KR
2019-01-01
2019-12-31
0000831259
country:JP
2019-01-01
2019-12-31
0000831259
country:BE
2019-01-01
2019-12-31
0000831259
country:ID
2019-01-01
2019-12-31
0000831259
country:IN
2018-01-01
2018-12-31
0000831259
country:ES
2018-01-01
2018-12-31
0000831259
country:ID
2017-01-01
2017-12-31
0000831259
country:PH
2017-01-01
2017-12-31
0000831259
country:GB
2018-01-01
2018-12-31
0000831259
country:JP
2018-01-01
2018-12-31
0000831259
country:US
2018-01-01
2018-12-31
0000831259
country:BE
2017-01-01
2017-12-31
0000831259
country:GB
2019-01-01
2019-12-31
0000831259
country:CL
2017-01-01
2017-12-31
0000831259
country:CH
2017-01-01
2017-12-31
0000831259
country:IN
2019-01-01
2019-12-31
0000831259
country:FR
2017-01-01
2017-12-31
0000831259
country:FR
2018-01-01
2018-12-31
0000831259
country:BM
2019-01-01
2019-12-31
0000831259
country:JP
2017-01-01
2017-12-31
0000831259
country:CH
2018-01-01
2018-12-31
0000831259
country:ES
2017-01-01
2017-12-31
0000831259
country:CN
2019-01-01
2019-12-31
0000831259
country:DE
2017-01-01
2017-12-31
0000831259
country:BE
2018-01-01
2018-12-31
0000831259
country:CN
2018-01-01
2018-12-31
0000831259
country:DE
2019-01-01
2019-12-31
0000831259
country:FR
2019-01-01
2019-12-31
0000831259
fcx:OthersIndividuallyImmaterialCountriesMember
2018-01-01
2018-12-31
0000831259
country:CN
2017-01-01
2017-12-31
0000831259
country:ES
2019-01-01
2019-12-31
0000831259
country:US
2019-12-31
0000831259
country:US
2018-12-31
0000831259
fcx:OthersIndividuallyImmaterialCountriesMember
2018-12-31
0000831259
country:ID
2019-12-31
0000831259
country:ID
2018-12-31
0000831259
country:CL
2018-12-31
0000831259
country:CL
2019-12-31
0000831259
country:PE
2018-12-31
0000831259
country:PE
2019-12-31
0000831259
fcx:OthersIndividuallyImmaterialCountriesMember
2019-12-31
0000831259
fcx:RefinedCopperProductsMember
2019-01-01
2019-12-31
0000831259
fcx:MolybdenumMember
2019-01-01
2019-12-31
0000831259
fcx:CopperInConcentratesMember
2019-01-01
2019-12-31
0000831259
fcx:MolybdenumMember
2017-01-01
2017-12-31
0000831259
us-gaap:GoldMember
2017-01-01
2017-12-31
0000831259
fcx:RefinedCopperProductsMember
2018-01-01
2018-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
2017-01-01
2017-12-31
0000831259
us-gaap:GoldMember
2019-01-01
2019-12-31
0000831259
fcx:CopperCathodeMember
2018-01-01
2018-12-31
0000831259
fcx:OtherProductsOrServicesMember
2019-01-01
2019-12-31
0000831259
fcx:CopperCathodeMember
2017-01-01
2017-12-31
0000831259
fcx:CopperInConcentratesMember
2017-01-01
2017-12-31
0000831259
fcx:PurchasedCopperMember
2017-01-01
2017-12-31
0000831259
fcx:CopperCathodeMember
2019-01-01
2019-12-31
0000831259
fcx:RefinedCopperProductsMember
2017-01-01
2017-12-31
0000831259
fcx:MolybdenumMember
2018-01-01
2018-12-31
0000831259
fcx:CopperInConcentratesMember
2018-01-01
2018-12-31
0000831259
fcx:PurchasedCopperMember
2018-01-01
2018-12-31
0000831259
us-gaap:GoldMember
2018-01-01
2018-12-31
0000831259
fcx:PurchasedCopperMember
2019-01-01
2019-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
2018-01-01
2018-12-31
0000831259
fcx:OtherProductsOrServicesMember
2018-01-01
2018-12-31
0000831259
fcx:OtherProductsOrServicesMember
2017-01-01
2017-12-31
0000831259
us-gaap:NondesignatedMember
us-gaap:SalesMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RodAndRefiningSegmentMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:MolybdenumMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2017-01-01
2017-12-31
0000831259
fcx:CorporateAndEliminationsMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RodAndRefiningSegmentMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:BagdadMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
country:ID
fcx:GrasbergSegmentMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:MorenciMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:MolybdenumMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
country:ID
fcx:GrasbergSegmentMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:MolybdenumMember
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:CorporateAndEliminationsMember
2017-01-01
2017-12-31
0000831259
fcx:CorporateAndEliminationsMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:BagdadMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:BagdadMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:MorenciMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
country:ID
fcx:GrasbergSegmentMember
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:MorenciMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2017-01-01
2017-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:RodAndRefiningSegmentMember
2017-01-01
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
2017-12-31
0000831259
us-gaap:OperatingSegmentsMember
country:ID
fcx:GrasbergSegmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RoyaltyAssessmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2018-01-01
2018-12-31
0000831259
fcx:CorporateAndEliminationsMember
fcx:FreeportCobaltMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RoyaltyAssessmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2017-01-01
2017-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:TaxAuthorityInPapauIndonesiaMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:MinimumTaxCreditCarryforwardsMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeCollectiveLaborAgreementMember
fcx:CerroVerdeMember
2018-01-01
2018-12-31
0000831259
fcx:MinimumTaxCreditCarryforwardsMember
2017-01-01
2017-12-31
0000831259
fcx:CerroVerdeRoyaltyDisputeMember
us-gaap:JudicialRulingMember
us-gaap:UnfavorableRegulatoryActionMember
fcx:December2006toTaxYear2013Member
2018-01-01
2018-12-31
0000831259
fcx:CorporateAndEliminationsMember
fcx:OnshoreCaliforniaMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:SurfaceWaterTaxesPapuaIndonesiaMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:BagdadMember
fcx:BagdadMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:BagdadMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RodAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2019-12-31
0000831259
fcx:CorporateAndEliminationsMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:MolybdenumMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:MolybdenumMember
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
country:ID
fcx:GrasbergSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:BagdadMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:MolybdenumMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:RodAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:MorenciMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:MorenciMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:MorenciMember
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:CorporateAndEliminationsMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
country:ID
fcx:GrasbergSegmentMember
2019-12-31
0000831259
fcx:CorporateAndEliminationsMember
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:BagdadMember
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RodAndRefiningSegmentMember
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
country:ID
fcx:GrasbergSegmentMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
2019-01-01
2019-12-31
0000831259
us-gaap:IntersegmentEliminationMember
2019-01-01
2019-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:MorenciMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2018-01-01
2018-12-31
0000831259
fcx:CorporateAndEliminationsMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RodAndRefiningSegmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:BagdadMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:MolybdenumMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:MolybdenumMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:MolybdenumMember
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:BagdadMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:RodAndRefiningSegmentMember
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:MorenciMember
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:RodAndRefiningSegmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:OtherIndividuallyImmaterialOperatingSegmentsMember
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:AtlanticCopperSmeltingAndRefiningSegmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
country:ID
fcx:GrasbergSegmentMember
2018-12-31
0000831259
fcx:CorporateAndEliminationsMember
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:SouthAmericaMember
fcx:CerroVerdeMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
fcx:CorporateAndEliminationsMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
country:ID
fcx:GrasbergSegmentMember
2018-01-01
2018-12-31
0000831259
us-gaap:IntersegmentEliminationMember
srt:NorthAmericaMember
fcx:MorenciMember
2018-01-01
2018-12-31
0000831259
us-gaap:OperatingSegmentsMember
srt:NorthAmericaMember
fcx:BagdadMember
2018-12-31
0000831259
fcx:NoncontrollingInterestOwnersOfSouthAmericaMiningOperationsMember
srt:AffiliatedEntityMember
2015-01-01
2015-12-31
0000831259
srt:ConsolidationEliminationsMember
2019-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2019-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2019-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2019-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2018-01-01
2018-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2018-01-01
2018-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2018-01-01
2018-12-31
0000831259
srt:ConsolidationEliminationsMember
2018-01-01
2018-12-31
0000831259
srt:ParentCompanyMember
2018-01-01
2018-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2017-01-01
2017-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2017-01-01
2017-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2017-01-01
2017-12-31
0000831259
srt:ConsolidationEliminationsMember
2017-01-01
2017-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2016-12-31
0000831259
srt:ConsolidationEliminationsMember
2016-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2017-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2017-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2016-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2017-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2016-12-31
0000831259
srt:ConsolidationEliminationsMember
2017-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2018-12-31
0000831259
srt:ConsolidationEliminationsMember
2018-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2018-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2018-12-31
0000831259
srt:NonGuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2019-01-01
2019-12-31
0000831259
srt:ConsolidationEliminationsMember
2019-01-01
2019-12-31
0000831259
srt:GuarantorSubsidiariesMember
srt:ReportableLegalEntitiesMember
2019-01-01
2019-12-31
0000831259
srt:ParentCompanyMember
srt:ReportableLegalEntitiesMember
2019-01-01
2019-12-31
0000831259
fcx:FreeportMcMoRanOilGasMember
2018-12-31
0000831259
2018-07-01
2018-09-30
0000831259
2018-04-01
2018-06-30
0000831259
2018-01-01
2018-03-31
0000831259
2018-10-01
2018-12-31
0000831259
fcx:FreeportCobaltMember
us-gaap:OperatingExpenseMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:ProductionandDeliveryCostsMember
fcx:PTFIchargesMember
2018-10-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:PTFIchargesMember
2019-01-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:PTFIchargesMember
2018-01-01
2018-12-31
0000831259
fcx:FreeportCobaltMember
2018-10-01
2018-12-31
0000831259
fcx:FreeportCobaltMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:PTFIchargesMember
2019-10-01
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
fcx:PTFIchargesMember
2018-10-01
2018-12-31
0000831259
2019-04-01
2019-06-30
0000831259
2019-07-01
2019-09-30
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:OtherExpenseMember
fcx:PTFIchargesMember
2019-01-01
2019-12-31
0000831259
country:ID
2018-10-01
2018-12-31
0000831259
fcx:TaxAuthorityInPapauIndonesiaMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:SalesMember
fcx:PTFIchargesMember
2019-07-01
2019-09-30
0000831259
fcx:PtFreeportIndonesiaMember
fcx:ProductionandDeliveryCostsMember
fcx:PTFIchargesMember
2019-04-01
2019-06-30
0000831259
fcx:PtFreeportIndonesiaMember
fcx:PTFIchargesMember
2018-04-01
2018-06-30
0000831259
fcx:SiteRemediationReclamationandClosureCostsMember
2019-01-01
2019-12-31
0000831259
2019-10-01
2019-12-31
0000831259
fcx:ProductionandDeliveryCostsMember
2019-07-01
2019-09-30
0000831259
fcx:PtFreeportIndonesiaMember
fcx:ProductionandDeliveryCostsMember
fcx:PTFIchargesMember
2018-12-31
0000831259
fcx:SiteRemediationReclamationandClosureCostsMember
2018-01-01
2018-12-31
0000831259
fcx:PtFreeportIndonesiaMember
us-gaap:InterestExpenseMember
fcx:PTFIchargesMember
2019-10-01
2019-12-31
0000831259
2019-01-01
2019-03-31
0000831259
fcx:CopperMember
2019-12-31
0000831259
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
2019-12-31
0000831259
us-gaap:GoldMember
2019-01-01
2019-12-31
0000831259
fcx:NetEquityInterestMember
fcx:SilverMember
2019-12-31
0000831259
fcx:SilverMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
fcx:SilverMember
2019-12-31
0000831259
fcx:PtFreeportIndonesiaMember
srt:ScenarioForecastMember
2023-01-01
0000831259
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
fcx:CopperMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
srt:SouthAmericaMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:NetEquityInterestMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
srt:NorthAmericaMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
srt:SouthAmericaMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
srt:NorthAmericaMember
fcx:CopperMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
srt:SouthAmericaMember
fcx:CopperMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
country:ID
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
country:ID
fcx:CopperMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
srt:NorthAmericaMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:NetEquityInterestMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:NetEquityInterestMember
fcx:CopperMember
2019-12-31
0000831259
fcx:ConsolidatedBasisMember
country:ID
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:HendersonMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:DeepMillLevelZoneMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:DeepOreZoneMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:ElAbraMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:KucingLiarMember
fcx:UndevelopedMember
fcx:CopperMember
2019-12-31
0000831259
fcx:ClimaxMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:GrasbergBlockCaveMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ElAbraMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:HendersonMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:MorenciMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ChinoMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:HendersonMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:MiamiMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:ClimaxMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ElAbraMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:TyroneMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:KucingLiarMember
fcx:UndevelopedMember
2019-12-31
0000831259
fcx:KucingLiarMember
fcx:UndevelopedMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:MiamiMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:TyroneMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:SierritaMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:BigGossanMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:KucingLiarMember
fcx:UndevelopedMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:MorenciMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:GrasbergBlockCaveMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:BigGossanMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:SaffordMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:SierritaMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:DeepMillLevelZoneMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:MorenciMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:SierritaMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ChinoMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:BagdadMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:MorenciMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:DeepOreZoneMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:MiamiMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:GrasbergBlockCaveMember
us-gaap:ProductiveLandMember
2019-12-31
0000831259
fcx:ChinoMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:BigGossanMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:BagdadMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ClimaxMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:SaffordMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:HendersonMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:BagdadMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:ChinoMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:DeepMillLevelZoneMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ClimaxMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:DeepMillLevelZoneMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:ElAbraMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:SaffordMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:TyroneMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:BagdadMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:SierritaMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:GrasbergBlockCaveMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:SaffordMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:DeepOreZoneMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:CerroVerdeMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:TyroneMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
fcx:DeepOreZoneMember
us-gaap:ProductiveLandMember
fcx:MolybdenumMember
2019-12-31
0000831259
fcx:BigGossanMember
us-gaap:ProductiveLandMember
fcx:CopperMember
2019-12-31
0000831259
fcx:MiamiMember
us-gaap:ProductiveLandMember
us-gaap:GoldMember
2019-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2018-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2017-01-01
2017-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2018-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2019-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2017-01-01
2017-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2018-01-01
2018-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2016-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2017-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2018-01-01
2018-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2019-01-01
2019-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2017-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2016-12-31
0000831259
us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember
2019-12-31
0000831259
fcx:ReserveforTaxesOtherthanIncomeTaxesMember
2019-01-01
2019-12-31
iso4217:USD
xbrli:shares
iso4217:USD
utreg:lb
xbrli:pure
iso4217:USD
fcx:lb
utreg:lb
iso4217:USD
xbrli:shares
iso4217:USD
fcx:oz
iso4217:IDR
iso4217:USD
fcx:payment
fcx:site
fcx:state
fcx:project
fcx:platform
iso4217:IDR
fcx:case
fcx:divisions
utreg:T
fcx:well
utreg:oz
iso4217:USD
utreg:bbl
utreg:g
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
(Mark one)
|
| |
☒ | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|
For the fiscal year ended December 31, 2019
OR
|
| |
☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|
For the transition period from to
Commission file number: 001-11307-01
Freeport-McMoRan Inc.
(Exact name of registrant as specified in its charter)
|
| | |
Delaware | | 74-2480931 |
(State or other jurisdiction of | | (I.R.S. Employer Identification No.) |
incorporation or organization) | | |
|
| | | | | | |
333 North Central Avenue | | | | |
Phoenix | | Arizona | | | | 85004-2189 |
(Address of principal executive offices) | | | | (Zip Code) |
(602) 366-8100
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
|
| | |
Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
Common Stock, par value $0.10 per share | FCX | The New York Stock Exchange |
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act ☑ Yes ☐ No
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. ☐ Yes ☑ No
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ☑ Yes ☐ No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☑ Yes ☐ No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
|
| | | |
Large accelerated filer | ☑ | Accelerated filer | ☐ |
Non-accelerated filer | ☐ | Smaller reporting company | ☐ |
| | Emerging growth company | ☐ |
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). ☐ Yes ☑ No
The aggregate market value of common stock held by non-affiliates of the registrant was $13.1 billion on June 30, 2019.
Common stock issued and outstanding was 1,450,972,426 shares on January 31, 2020.
DOCUMENTS INCORPORATED BY REFERENCE |
|
Portions of our proxy statement for our 2020 annual meeting of stockholders are incorporated by reference into Part III (Items 10, 11, 12, 13 and 14) of this report. |
Freeport-McMoRan Inc.
PART I
Items 1. and 2. Business and Properties.
All of our periodic reports filed with the United States (U.S.) Securities and Exchange Commission (SEC) pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, are available, free of charge, through our website, “fcx.com,” including our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to those reports. These reports and amendments are available through our website as soon as reasonably practicable after we electronically file or furnish such material to the SEC.
References to “we,” “us” and “our” refer to Freeport-McMoRan Inc. (FCX) and its consolidated subsidiaries. References to “Notes” refer to the Notes to Consolidated Financial Statements included herein (refer to Item 8.), and references to “MD&A” refer to Management’s Discussion and Analysis of Financial Condition and Results of Operations and Quantitative and Qualitative Disclosures About Market Risk included herein (refer to Items 7. and 7A.).
GENERAL
We are a leading international mining company with headquarters in Phoenix, Arizona. Our company was incorporated under the laws of the state of Delaware on November 10, 1987. We operate large, long-lived geographically diverse assets with significant proven and probable reserves of copper, gold and molybdenum, and we are one of the world’s largest publicly traded copper producers. Our portfolio of assets includes the Grasberg minerals district in Indonesia, one of the world’s largest copper and gold deposits; and significant mining operations in North America and South America, including the large-scale Morenci minerals district in Arizona and the Cerro Verde operation in Peru.
We believe that we have a high-quality portfolio of long-lived copper assets positioned to generate long-term value. PT Freeport Indonesia (PT-FI) continues to advance several projects in the Grasberg minerals district related to the development of its large-scale, long-lived, high-grade underground ore bodies, and we are nearing completion of a project to develop the Lone Star leachable ores near the Safford operation in eastern Arizona, which is now approximately 75 percent complete. We are also pursuing other opportunities to enhance our mines’ net present values, and we continue to advance studies for future development of our copper resources, the timing of which will be dependent on market conditions.
During 2019, we advanced initiatives in our North America and South America mining operations to enhance productivity, expand margins and reduce the capital intensity of the business through the utilization of new technology applications in combination with a more interactive operating structure. The pilot program initiated at the Bagdad mine in northwest Arizona in late 2018 was successful in utilizing data science, machine learning and integrated functional teams to address bottlenecks, provide cost benefits and drive improved overall performance. The program is now being implemented across our North America and South America operations.
During fourth-quarter 2019, PT-FI completed mining the final phase of the Grasberg open pit and continues to achieve important milestones in ramping-up production of large-scale quantities of copper and gold from its significant underground ore bodies. In aggregate, the Grasberg open pit produced over 27 billion pounds of copper and 46 million ounces of gold in the 30-year period from 1990 through 2019. As PT-FI continues to ramp-up production from its underground ore bodies, our consolidated metal production is expected to improve significantly by 2021.
Following are our ownership interests at December 31, 2019, in operating mines through our consolidated subsidiaries, Freeport Minerals Corporation (FMC) and PT-FI:
| |
a. | Prior to December 21, 2018, we owned 90.64 percent of PT-FI and PT-FI had an unincorporated joint venture with Rio Tinto plc (Rio Tinto). Refer to Note 2 for further discussion of the PT-FI divestment transaction and Note 3 for discussion of the former joint venture with Rio Tinto (Rio Tinto Joint Venture). |
| |
b. | FMC has a 72 percent undivided interest in Morenci via an unincorporated joint venture. Refer to Note 3 for further discussion. |
At December 31, 2019, our estimated consolidated recoverable proven and probable mineral reserves totaled 116.0 billion pounds of copper, 29.6 million ounces of gold and 3.58 billion pounds of molybdenum. Following is a summary of our estimated consolidated recoverable proven and probable mineral reserves at December 31, 2019, by geographic location (refer to “Mining Operations” for further discussion):
|
| | | | | | | | | | |
| Copper | | Gold | | Molybdenum | | |
North America | 40 | % | | 2 | % | | 80 | % | a | |
South America | 29 |
| | — |
| | 20 |
| | |
Indonesia | 31 |
| | 98 |
| | — |
| | |
| 100 | % | | 100 | % | | 100 | % | | |
| |
a. | Our Henderson and Climax molybdenum mines contain 20 percent of our estimated consolidated recoverable proven and probable molybdenum reserves, and our North America copper mines contain 60 percent. |
In North America, we operate seven copper mines - Morenci, Bagdad, Safford, Sierrita and Miami in Arizona, and Chino and Tyrone in New Mexico, and two molybdenum mines - Henderson and Climax in Colorado. In addition to copper, certain of our North America copper mines also produce molybdenum concentrate, gold and silver. In South America, we operate two copper mines - Cerro Verde in Peru and El Abra in Chile. In addition to copper, the Cerro Verde mine also produces molybdenum concentrate and silver. In Indonesia, PT-FI operates in the Grasberg minerals district. In addition to copper, the Grasberg minerals district also produces gold and silver.
Following is a summary of the geographic locations of our consolidated copper, gold and molybdenum production for the year 2019 (refer to “Mining Operations” for further information):
|
| | | | | | | | | |
| Copper | | Gold | | Molybdenum | |
North America | 45 | % | | 2 | % | | 68 | % | a |
South America | 36 |
| | — |
| | 32 |
| |
Indonesia | 19 |
| | 98 |
| | — |
| |
| 100 | % | | 100 | % | | 100 | % | |
| |
a. | Our Henderson and Climax molybdenum mines produced 32 percent of our consolidated molybdenum production, and our North America copper mines produced 36 percent. |
The geographic locations of our operating mines are shown on the world map below. 
COPPER, GOLD AND MOLYBDENUM
Following is a brief discussion of our primary natural resources – copper, gold and molybdenum. For further discussion of historical and current market prices of these commodities, refer to MD&A and Item 1A. “Risk Factors.”
Copper
Copper is an internationally traded commodity, and its prices are determined by the major metals exchanges – the London Metal Exchange (LME), New York Mercantile Exchange (NYMEX) and Shanghai Futures Exchange. Prices on these exchanges generally reflect the worldwide balance of copper supply and demand, and can be volatile and cyclical. During 2019, the LME copper settlement price averaged $2.72 per pound, ranging from a low of $2.51 per pound to a high of $2.98 per pound, and was $2.79 per pound at December 31, 2019.
In general, demand for copper reflects the rate of underlying world economic growth, particularly in industrial production and construction. According to Wood Mackenzie, a widely followed independent metals market consultant, copper’s end-use markets (and their estimated shares of total consumption) are construction (28 percent), electrical applications (28 percent), consumer products (21 percent), transportation (12 percent) and industrial machinery (11 percent). We believe copper will continue to be essential in these basic uses as well as contribute significantly to new technologies for energy efficiencies, to advance communications and to enhance public health. Examples of areas we believe will require additional copper in the future include: (i) high efficiency motors, which consume up to 75 percent more copper than a standard motor; (ii) electric vehicles, which consume up to four times the amount of copper in terms of weight compared to vehicles of similar size with an internal combustion engine, and require copper-intensive charging station infrastructure to refuel; and (iii) renewable energy such as wind and solar, which consume four to five times the amount of copper compared to traditional fossil fuel generated power.
Gold
Gold is used for jewelry, coinage and bullion as well as various industrial and electronic applications. Gold can be readily sold on numerous markets throughout the world. Benchmark prices are generally based on London Bullion Market Association (London) quotations. During 2019, the London PM gold price averaged $1,393 per ounce, ranging from a low of $1,270 per ounce to a high of $1,546 per ounce, and was $1,515 per ounce on December 30, 2019 (there was no London PM gold price quote on December 31, 2019).
Molybdenum
Molybdenum is a key alloying element in steel and the raw material for several chemical-grade products used in catalysts, lubrication, smoke suppression, corrosion inhibition and pigmentation. Molybdenum, as a high-purity metal, is also used in electronics such as flat-panel displays and in super alloys used in aerospace. Reference prices for molybdenum are available in several publications, including Metals Week, CRU Report and Metal Bulletin. During 2019, the weekly average price of molybdenum quoted by Metals Week averaged $11.37 per pound, ranging from a low of $8.55 per pound to a high of $12.66 per pound, and was $9.23 per pound at December 31, 2019.
PRODUCTS AND SALES
Our consolidated revenues for 2019 primarily included sales of copper (79 percent), gold (11 percent) and molybdenum (8 percent). Copper concentrate sales to PT Smelting (PT-FI’s 25-percent-owned copper smelter and refinery in Gresik, Indonesia) totaled 13 percent of our consolidated revenues for the year ended December 31, 2019, and 12 percent for both the years ended December 31, 2018 and 2017, which is the only customer that accounted for 10 percent or more of our consolidated revenues during the three years ended December 31, 2019. Refer to Note 16 for a summary of our consolidated revenues and operating income (loss) by business segment and geographic area.
Copper Products
We are one of the world’s leading producers of copper concentrate, cathode and continuous cast copper rod. During 2019, 56 percent of our mined copper was sold in concentrate, 22 percent as cathode and 22 percent as rod from our North America operations. The copper ore from our mines is generally processed either by smelting and refining or by solution extraction and electrowinning (SX/EW) as described below.
Copper Concentrate. We produce copper concentrate at six of our mines in which mined ore is crushed and treated to produce a copper concentrate with copper content of approximately 20 to 30 percent. In North America, copper concentrate is produced at the Morenci, Bagdad, Sierrita and Chino mines, and a significant portion is shipped to our Miami smelter in Arizona for further processing. Copper concentrate is also produced at the Cerro Verde mine in Peru and the Grasberg minerals district in Indonesia.
Copper Cathode. We produce copper cathode at our electrolytic refinery located in El Paso, Texas, and at nine of our mines.
SX/EW cathode is produced from the Morenci, Bagdad, Safford, Sierrita, Miami, Chino and Tyrone mines in North America, and from the Cerro Verde and El Abra mines in South America. For ore subject to the SX/EW process, the ore is placed on stockpiles and copper is extracted from the ore by dissolving it with a weak sulphuric acid solution. The copper content of the solution is increased in two additional SX stages, and then the copper-bearing solution undergoes an EW process to produce cathode that is, on average, 99.99 percent copper. Our copper cathode is used as the raw material input for copper rod, brass mill products and for other uses.
Copper cathode is also produced at Atlantic Copper (our wholly owned copper smelting and refining unit in Spain) and PT Smelting. Copper concentrate is smelted (i.e., subjected to extreme heat) to produce copper anode, which weighs between 800 and 900 pounds and has an average copper content of 99.5 percent. The anode is further treated by electrolytic refining to produce copper cathode, which weighs between 100 and 350 pounds and has an average copper content of 99.99 percent. Refer to “Mining Operations - Smelting Facilities and Other Mining Properties” for further discussion of Atlantic Copper and PT Smelting.
Continuous Cast Copper Rod. We manufacture continuous cast copper rod at our facilities in El Paso, Texas; Norwich, Connecticut; and Miami, Arizona, primarily using copper cathode produced at our North America copper mines.
Copper Sales
North America. The majority of the copper produced at our North America copper mines and refined in our El Paso, Texas refinery is consumed at our rod plants to produce copper rod which is sold to wire and cable manufacturers. The remainder of our North America copper production is sold in the form of copper cathode or copper concentrate under U.S. dollar-denominated annual contracts. Cathode and rod contract prices are generally based on the prevailing Commodity Exchange Inc. (COMEX - a division of NYMEX) monthly average settlement price for the month of shipment and include a premium. Generally, copper cathode is sold to rod, brass or tube fabricators. During 2019, 23 percent of our North America mines’ copper concentrate sales volumes were shipped to Atlantic Copper for smelting and refining and sold as copper anode and copper cathode.
South America. Production from our South America mines is sold as copper concentrate or copper cathode under U.S. dollar-denominated, annual and multi-year contracts. During 2019, our South America mines sold approximately 77 percent of their copper production in concentrate and 23 percent as cathode.
Substantially all of our South America copper concentrate and cathode sales contracts provide final copper pricing in a specified future month (generally one to four months from the shipment date) primarily based on quoted LME monthly average settlement copper prices. Revenues from our South America concentrate sales are recorded net of royalties and treatment charges (i.e., fees paid to smelters that are generally negotiated annually). In addition, because a portion of the metals contained in copper concentrate is unrecoverable from the smelting process, revenues from our South America concentrate sales are also recorded net of allowances for unrecoverable metals, which are a negotiated term of the contracts and vary by customer.
Indonesia. PT-FI sells its production in the form of copper concentrate, which contains significant quantities of gold and silver, primarily under U.S. dollar-denominated, long-term contracts. PT-FI also sells a small amount of copper concentrate in the spot market. Following is a summary of PT-FI’s aggregate percentage of concentrate sales to unaffiliated third parties, PT Smelting and Atlantic Copper for the years ended December 31:
|
| | | | | | | | |
| 2019 | | 2018 | | 2017 |
Third parties | 34 | % | | 60 | % | | 54 | % |
PT Smelting | 64 |
| | 38 |
| | 46 |
|
Atlantic Copper | 2 |
| | 2 |
| | — |
|
| 100 | % | | 100 | % | | 100 | % |
Substantially all of PT-FI’s concentrate sales contracts provide final copper pricing in a specified future month (generally one to four months from the shipment date) primarily based on quoted LME monthly average settlement copper prices. Revenues from PT-FI’s concentrate sales are recorded net of royalties, export duties, treatment charges and allowances for unrecoverable metals.
Gold Products and Sales
We produce gold almost exclusively from the Grasberg minerals district. The gold we produce is primarily sold as a component of our copper concentrate or in slimes, which are a product of the smelting and refining process. Gold generally is priced at the average London price for a specified month near the month of shipment. Revenues from gold sold as a component of our copper concentrate are recorded net of treatment and refining charges, royalties, export duties and allowances for unrecoverable metals. Revenues from gold sold in slimes are recorded net of refining charges.
Molybdenum Products and Sales
We are the world’s largest producer of molybdenum and molybdenum-based chemicals. In addition to production from the Henderson and Climax molybdenum mines, we produce molybdenum concentrate at certain of the North America copper mines and the Cerro Verde copper mine in Peru. The majority of our molybdenum concentrate is processed in our own conversion facilities. Our molybdenum sales are primarily priced based on the average published Metals Week price for the month prior to the month of shipment.
LABOR MATTERS
At December 31, 2019, we employed approximately 27,500 people (12,800 in North America, 6,900 in Indonesia, 6,500 in South America and 1,300 in Europe and other locations). We also had contractors that employ personnel at many of our operations, including approximately 22,300 at the Grasberg minerals district in Indonesia, 11,700 in North America, 5,900 at our South America mining operations and 700 in Europe and other locations. Employees represented by unions at December 31, 2019, are listed below, with the number of employees represented and the expiration date of the applicable union agreements:
|
| | | | | | |
| Location | Number of Unions | Number of Union- Represented Employees | Expiration Date |
|
| PT-FI – Indonesia | 2 | 5,020 |
| September 2019 | a |
| Cerro Verde – Peru | 1 | 3,421 |
| August 2021 | |
| El Abra – Chile | 2 | 788 |
| April 2023 | |
| Atlantic Copper – Spain | 3 | 484 |
| December 2019 | b |
| Kokkola - Finland | 3 | 187 |
| No |