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Business Segments (Unaudited) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Sep. 30, 2014 | Dec. 31, 2014
Revenues: |  |  |  |  |  |
Unaffiliated customers | $ 4,153 us-gaap_SalesRevenueNet |  | $ 4,985 us-gaap_SalesRevenueNet |  |  |
Intersegment | 0 us-gaap_RevenueFromRelatedParties |  | 0 us-gaap_RevenueFromRelatedParties |  |  |
Production and delivery | 2,912 fcx_ProductionAndDelivery |  | 2,737 fcx_ProductionAndDelivery |  |  |
Depreciation, depletion and amortization | 939 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization |  | 966 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization |  |  |
Impairment of oil and gas properties | 3,104 us-gaap_ImpairmentOfOilAndGasProperties |  | 0 us-gaap_ImpairmentOfOilAndGasProperties |  |  |
Selling, general and administrative expenses | 154 us-gaap_SellingGeneralAndAdministrativeExpense |  | 135 us-gaap_SellingGeneralAndAdministrativeExpense |  |  |
Mining exploration and research expenses | 33 fcx_ExplorationAndResearchExpenses |  | 30 fcx_ExplorationAndResearchExpenses |  |  |
Environmental obligations and shutdown costs | 13 fcx_EnvironmentalObligationsAndShutdownCosts |  | 6 fcx_EnvironmentalObligationsAndShutdownCosts |  |  |
Net gain on sale of assets | (39)us-gaap_GainLossOnDispositionOfAssets1 |  | 0 us-gaap_GainLossOnDispositionOfAssets1 |  |  |
Operating income (loss) | (2,963)us-gaap_OperatingIncomeLoss |  | 1,111 us-gaap_OperatingIncomeLoss |  |  |
Interest expense, net | 146 fcx_InterestExpenseIncludingAccretion |  | 161 fcx_InterestExpenseIncludingAccretion |  |  |
Provision for (benefit from) income taxes | (695)us-gaap_IncomeTaxExpenseBenefit |  | 357 us-gaap_IncomeTaxExpenseBenefit |  |  |
Total Assets | 56,065 us-gaap_Assets |  | 63,732 us-gaap_Assets |  |  | 58,674 us-gaap_Assets
Capital expenditures | 1,867 us-gaap_PaymentsToAcquireProductiveAssets |  | 1,612 us-gaap_PaymentsToAcquireProductiveAssets |  |  |
Mining Operations [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 3,653 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 3,724 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Intersegment | 0 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 0 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Production and delivery | 2,626 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 2,426 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Depreciation, depletion and amortization | 405 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 346 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |  |  |
Selling, general and administrative expenses | 41 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 38 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Mining exploration and research expenses | 33 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 30 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Environmental obligations and shutdown costs | 13 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 6 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Net gain on sale of assets | (39)us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |  |  |
Operating income (loss) | 574 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 878 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Interest expense, net | 45 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 23 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Provision for (benefit from) income taxes | 79 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 169 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Total Assets | 37,976 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 36,858 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
Capital expenditures | 840 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  | 1,024 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_MiningOperationsMember |  |  |
North America Copper Mines [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 221 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 84 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Intersegment | 1,114 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 1,202 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Production and delivery | 943 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 786 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Depreciation, depletion and amortization | 133 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 107 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Mining exploration and research expenses | 3 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 2 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Net gain on sale of assets | (39)us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |  |  |
Operating income (loss) | 294 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 390 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Interest expense, net | 1 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 1 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Total Assets | 9,448 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 9,239 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Capital expenditures | 107 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  | 303 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_NorthAmericaCopperMinesSegmentMember |  |  |
Morenci [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 106 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 23 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Intersegment | 450 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 444 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Production and delivery | 374 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 283 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Depreciation, depletion and amortization | 51 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 34 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |  |  |
Operating income (loss) | 130 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 150 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Interest expense, net | 1 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 1 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Total Assets | 3,802 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 3,412 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Capital expenditures | 84 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  | 244 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_MorenciNorthAmericaCopperMinesSegmentMember |  |  |
Other North America Copper Mines [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 115 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 61 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Intersegment | 664 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 758 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Production and delivery | 569 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 503 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Depreciation, depletion and amortization | 82 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 73 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Mining exploration and research expenses | 3 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 2 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Net gain on sale of assets | (39)us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |  |  |
Operating income (loss) | 164 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 240 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Interest expense, net | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Total Assets | 5,646 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 5,827 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
Capital expenditures | 23 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  | 59 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesNorthAmericaCopperMinesSegmentMember |  |  |
South America Mines [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 479 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 702 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Intersegment | 7 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 196 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Production and delivery | 345 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 476 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Depreciation, depletion and amortization | 75 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 87 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 2 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |  |  |
Operating income (loss) | 65 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 333 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Interest expense, net | 1 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Provision for (benefit from) income taxes | 24 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 127 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Total Assets | 9,961 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 10,789 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Capital expenditures | 445 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  | 423 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_SouthAmericaMinesSegmentMember |  |  |
Cerro Verde [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 248 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 280 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Intersegment | 14 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 64 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Production and delivery | 198 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 165 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Depreciation, depletion and amortization | 37 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 36 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |  |  |
Operating income (loss) | 26 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 142 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Interest expense, net | 1 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Provision for (benefit from) income taxes | 5 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 57 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Total Assets | 7,991 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 6,730 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Capital expenditures | 431 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  | 400 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_CerroVerdeSouthAmericaSegmentMember |  |  |
Other South America Mines [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 231 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 422 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Intersegment | (7)us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1],[2] | 132 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Production and delivery | 147 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 311 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Depreciation, depletion and amortization | 38 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 51 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |  |  |
Selling, general and administrative expenses | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 1 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |  |  |
Operating income (loss) | 39 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 191 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Interest expense, net | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Provision for (benefit from) income taxes | 19 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 70 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Total Assets | 1,970 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 4,059 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Capital expenditures | 14 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] | 23 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMinesSouthAmericaSegmentMember | [1] |  |
Indonesia - Grasberg [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 621 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember | [3] | 462 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember | [3] |  |
Intersegment | (14)us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember | [2] | 8 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Production and delivery | 439 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 383 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Depreciation, depletion and amortization | 70 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 48 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 25 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 21 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |  |  |
Operating income (loss) | 73 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 18 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Interest expense, net | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Provision for (benefit from) income taxes | 29 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 18 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Total Assets | 8,882 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 7,466 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Capital expenditures | 225 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  | 236 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_GrasbergSegmentMember |  |  |
Africa - Tenke [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 382 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 306 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Intersegment | 28 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 21 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Production and delivery | 235 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 152 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Depreciation, depletion and amortization | 73 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 51 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 3 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 3 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |  |  |
Operating income (loss) | 99 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 121 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Interest expense, net | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Provision for (benefit from) income taxes | 26 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 24 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Total Assets | 5,108 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 4,904 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Capital expenditures | 39 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  | 31 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_TenkeSegmentMember |  |  |
Molybdenum mines [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Intersegment | 113 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 126 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Production and delivery | 83 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 76 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Depreciation, depletion and amortization | 26 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 22 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |  |  |
Operating income (loss) | 4 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 28 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Interest expense, net | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Total Assets | 2,075 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 2,101 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Capital expenditures | 3 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  | 19 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_MolybdenumSegmentMember |  |  |
Rod & Refining [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 1,062 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 1,146 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Intersegment | 7 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 8 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Production and delivery | 1,063 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 1,148 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Depreciation, depletion and amortization | 2 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 2 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 0 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |  |  |
Operating income (loss) | 4 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 4 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Interest expense, net | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 0 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Total Assets | 314 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 289 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Capital expenditures | 1 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  | 1 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_RodAndRefiningSegmentMember |  |  |
Atlantic Copper Smelting & Refining [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 540 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 588 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Intersegment | 6 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 5 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Production and delivery | 519 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 588 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Depreciation, depletion and amortization | 10 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 10 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 5 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 4 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |  |  |
Operating income (loss) | 12 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | (9)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Interest expense, net | 3 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 4 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Total Assets | 809 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 951 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Capital expenditures | 4 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  | 1 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_AtlanticCopperSmeltingAndRefiningSegmentMember |  |  |
Other Mining & Eliminations [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 348 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember | [4] | 436 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember | [4] |  |
Intersegment | (1,261)us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | (1,566)us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Production and delivery | (1,001)fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | (1,183)fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Depreciation, depletion and amortization | 16 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 19 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 6 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 7 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Mining exploration and research expenses | 30 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 28 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Environmental obligations and shutdown costs | 13 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 6 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |  |  |
Operating income (loss) | 23 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | (7)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Interest expense, net | 40 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 18 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Total Assets | 1,379 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 1,119 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
Capital expenditures | 16 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  | 10 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OtherMiningAndEliminationsSegmentMember |  |  |
U.S. Oil & Gas Operations [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Unaffiliated customers | 500 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [5],[6] | 1,261 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [5],[6] |  |
Intersegment | 0 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 0 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Production and delivery | 283 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 311 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Depreciation, depletion and amortization | 530 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 616 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Impairment of oil and gas properties | 3,104 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |  |  |
Selling, general and administrative expenses | 54 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 57 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |  |  |
Operating income (loss) | (3,471)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 277 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Interest expense, net | 37 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 76 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Provision for (benefit from) income taxes | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Total Assets | 17,887 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 26,385 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Capital expenditures | 1,018 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] | 579 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [6] |  |
Corporate, Other & Eliminations [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
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Intersegment | 0 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 0 us-gaap_RevenueFromRelatedParties / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Production and delivery | 3 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 0 fcx_ProductionAndDelivery / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Depreciation, depletion and amortization | 4 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 4 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |  |  |
Selling, general and administrative expenses | 59 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 40 us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Mining exploration and research expenses | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 0 fcx_ExplorationAndResearchExpenses / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Environmental obligations and shutdown costs | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 0 fcx_EnvironmentalObligationsAndShutdownCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Net gain on sale of assets | 0 us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |  |  |
Operating income (loss) | (66)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | (44)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Interest expense, net | 64 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 62 fcx_InterestExpenseIncludingAccretion / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Provision for (benefit from) income taxes | (774)us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 188 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Total Assets | 202 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 489 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Capital expenditures | 9 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  | 9 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = fcx_CorporateOtherAndEliminationsSegmentMember |  |  |
Crude oil and natural gas swaps [Member] |  |  |  |  |  |
Revenues: |  |  |  |  |  |
Net mark-to-market gains (losses) on derivative contracts | 52 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = fcx_CrudeOilandNaturalGasSwapsMember |  | (50)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = fcx_CrudeOilandNaturalGasSwapsMember |  |  |
Pt Smelting [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Deferred Intercompany Profit, Percentage |  |  |  |  | 25.00%fcx_DeferredIntercompanyProfitPercentage / dei_LegalEntityAxis = fcx_PtSmeltingMember |
Revenues: |  |  |  |  |  |
Revenues | $ 350 us-gaap_Revenues / dei_LegalEntityAxis = fcx_PtSmeltingMember |  | $ 373 us-gaap_Revenues / dei_LegalEntityAxis = fcx_PtSmeltingMember |  |  |
[1] | First-quarter 2014 amounts include the results of the Candelaria and Ojos del Salado mining operations, which were sold in November 2014.
[2] | Amounts include net reductions for provisional pricing adjustments to prior period open sales. There were no intersegment sales from El Abra or Grasberg in first-quarter 2015.
[3] | Includes PT-FI’s sales to PT Smelting totaling $350 million in first-quarter 2015 and $373 million in first-quarter 2014.
[4] | Includes revenues from FCX's molybdenum sales company, which includes sales of molybdenum produced by the Molybdenum mines and by certain of the North and South America copper mines.
[5] | Includes net mark-to-market gains (losses) associated with crude oil and natural gas derivative contracts totaling $52 million in first-quarter 2015 and $(50) million in first-quarter 2014.
[6] | First-quarter 2014 includes the results from Eagle Ford, which was sold in June 2014.

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