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Guarantor Financial Statements (Unaudited) Condensed Consolidating Statements of Cash Flows (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Cash flow from operating activities: |  |
Net income | $ (2,406)us-gaap_ProfitLoss | $ 626 us-gaap_ProfitLoss
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: |  |
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
Net (gains) losses on crude oil and natural gas derivative contracts | (52)us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 50 us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Equity in losses (earnings) of consolidated subsidiaries | (1)fcx_EquityinEarningsofSubsidiaries | 0 fcx_EquityinEarningsofSubsidiaries
Other, net | (781)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet | (28)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet
Decreases (increases) in working capital and changes in other tax payments | (86)us-gaap_IncreaseDecreaseInOperatingCapital | (413)us-gaap_IncreaseDecreaseInOperatingCapital
Net cash provided by operating activities | 717 us-gaap_NetCashProvidedByUsedInOperatingActivities | 1,201 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flow from investing activities: |  |
Capital expenditures | (1,867)us-gaap_PaymentsToAcquireProductiveAssets | (1,612)us-gaap_PaymentsToAcquireProductiveAssets
Intercompany loans | 0 fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity | 0 fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity
Dividends from (investments in) consolidated subsidiaries | 0 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates | 0 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Other, net | 127 us-gaap_PaymentsForProceedsFromOtherInvestingActivities | 7 us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Net cash used in investing activities | (1,740)us-gaap_NetCashProvidedByUsedInInvestingActivities | (1,605)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flow from financing activities: |  |
Proceeds from debt | 2,273 us-gaap_ProceedsFromIssuanceOfDebt | 1,149 us-gaap_ProceedsFromIssuanceOfDebt
Repayments of debt | (802)fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock | (987)fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock
Intercompany loans | 0 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties | 0 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties
Cash dividends and distributions paid, and contributions received | (350)us-gaap_PaymentsOfDividends | (403)us-gaap_PaymentsOfDividends
Other, net | (13)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash provided by (used in) financing activities | 1,108 us-gaap_NetCashProvidedByUsedInFinancingActivities | (239)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash and cash equivalents | 85 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (643)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year | 464 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,985 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of period | 549 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,342 us-gaap_CashAndCashEquivalentsAtCarryingValue
FCX Issuer [Member] |  |
Cash flow from operating activities: |  |
Net income | (2,474)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 510 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: |  |
Depreciation, depletion and amortization | 1 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net (gains) losses on crude oil and natural gas derivative contracts | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Equity in losses (earnings) of consolidated subsidiaries | 1,951 fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (604)fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other, net | (701)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 134 us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Decreases (increases) in working capital and changes in other tax payments | 1,171 us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (234)us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash provided by operating activities | (52)us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (193)us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash flow from investing activities: |  |
Capital expenditures | 0 us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Intercompany loans | (905)fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 190 fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Dividends from (investments in) consolidated subsidiaries | 310 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 212 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other, net | 0 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash used in investing activities | (595)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 402 us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash flow from financing activities: |  |
Proceeds from debt | 1,515 us-gaap_ProceedsFromIssuanceOfDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 895 us-gaap_ProceedsFromIssuanceOfDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Repayments of debt | (530)fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (780)fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Intercompany loans | 0 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash dividends and distributions paid, and contributions received | (327)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (326)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other, net | (11)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash provided by (used in) financing activities | 647 us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (209)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net increase (decrease) in cash and cash equivalents | 0 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash and cash equivalents at beginning of year | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash and cash equivalents at end of period | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
FM O&G LLC Guarantor [Member] |  |
Cash flow from operating activities: |  |
Net income | (2,343)us-gaap_ProfitLoss / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 164 us-gaap_ProfitLoss / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: |  |
Depreciation, depletion and amortization | 119 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 285 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Impairment of oil and gas properties | 1,062 us-gaap_ImpairmentOfOilAndGasProperties / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember |
Net (gains) losses on crude oil and natural gas derivative contracts | (52)us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 50 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Equity in losses (earnings) of consolidated subsidiaries | 2,359 fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (130)fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Other, net | 6 us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (9)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Decreases (increases) in working capital and changes in other tax payments | (1,321)us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 339 us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Net cash provided by operating activities | (170)us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 699 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Cash flow from investing activities: |  |
Capital expenditures | (302)us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (335)us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Intercompany loans | (400)fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (43)fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Dividends from (investments in) consolidated subsidiaries | (14)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (96)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Other, net | 0 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 4 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Net cash used in investing activities | (716)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (470)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Cash flow from financing activities: |  |
Proceeds from debt | 0 us-gaap_ProceedsFromIssuanceOfDebt / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 0 us-gaap_ProceedsFromIssuanceOfDebt / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Repayments of debt | 0 fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 0 fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Intercompany loans | 903 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (213)us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Cash dividends and distributions paid, and contributions received | 0 us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (14)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Other, net | (18)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 0 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Net cash provided by (used in) financing activities | 885 us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | (227)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Net increase (decrease) in cash and cash equivalents | (1)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Cash and cash equivalents at beginning of year | 1 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Cash and cash equivalents at end of period | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember | 2 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = fcx_FreeportMcMoRanOilGasMember
Non-Guarantor Subsidiaries [Member] |  |
Cash flow from operating activities: |  |
Net income | (5,440)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 870 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: |  |
Depreciation, depletion and amortization | 835 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 682 us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Impairment of oil and gas properties | 2,042 us-gaap_ImpairmentOfOilAndGasProperties / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Net (gains) losses on crude oil and natural gas derivative contracts | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Equity in losses (earnings) of consolidated subsidiaries | 3,530 fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (185)fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other, net | (86)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (140)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Decreases (increases) in working capital and changes in other tax payments | 58 us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (518)us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by operating activities | 939 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 709 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Cash flow from investing activities: |  |
Capital expenditures | (1,565)us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (1,277)us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Intercompany loans | 0 fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Dividends from (investments in) consolidated subsidiaries | 32 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (430)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other, net | 127 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 3 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net cash used in investing activities | (1,406)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (1,704)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Cash flow from financing activities: |  |
Proceeds from debt | 758 us-gaap_ProceedsFromIssuanceOfDebt / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 254 us-gaap_ProceedsFromIssuanceOfDebt / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Repayments of debt | (272)fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (207)fcx_PaymentsforRepaymentsofDebtandCapitalLeaseObligationsandforRepurchasesofPreferredStock / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Intercompany loans | 402 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 66 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Cash dividends and distributions paid, and contributions received | (319)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 237 us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other, net | (16)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by (used in) financing activities | 553 us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 350 us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net increase (decrease) in cash and cash equivalents | 86 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (645)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents at beginning of year | 463 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,985 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents at end of period | 549 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,340 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Eliminations [Member] |  |
Cash flow from operating activities: |  |
Net income | 7,851 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (918)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: |  |
Depreciation, depletion and amortization | (16)us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (2)us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Impairment of oil and gas properties | 0 us-gaap_ImpairmentOfOilAndGasProperties / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |
Net (gains) losses on crude oil and natural gas derivative contracts | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Equity in losses (earnings) of consolidated subsidiaries | (7,841)fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 919 fcx_EquityinEarningsofSubsidiaries / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Other, net | 0 us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (13)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Decreases (increases) in working capital and changes in other tax payments | 6 us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_IncreaseDecreaseInOperatingCapital / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Net cash provided by operating activities | 0 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (14)us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Cash flow from investing activities: |  |
Capital expenditures | 0 us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_PaymentsToAcquireProductiveAssets / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Intercompany loans | 1,305 fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (147)fcx_ProceedsFromPaymentsForLongTermLoansforRelatedPartiesInvestingActivity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Dividends from (investments in) consolidated subsidiaries | (328)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 314 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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