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DISPOSITIONS AND ACQUISITIONS (Details) (USD $) | 3 Months Ended | 12 Months Ended | 6 Months Ended | 1 Months Ended |  |  |  |  |  |
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2014 | May 31, 2013 | Jun. 30, 2013 | Sep. 08, 2014 | Jun. 20, 2014 | Jun. 03, 2013 | Mar. 29, 2013 | Mar. 07, 2013 | Feb. 14, 2013
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable, Date to be Paid | Feb. 02, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,729,000,000 us-gaap_PaymentsOfDividends |  | $ 2,537,000,000 us-gaap_PaymentsOfDividends |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.25 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 2.25 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 1.25 us-gaap_CommonStockDividendsPerShareDeclared |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  |  |  | 8,919,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,919,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  | 0 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities | [1] |  |  |  |  |  |  |  |  |  |
Payments for Repurchase of Preferred Stock and Preference Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock |  | 228,000,000 us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock |  | 0 us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty Trust Units Issued, Conversion of Debt or Equity Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,700,000 fcx_RoyaltyTrustUnitsIssuedConversionofDebtorEquityInstrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on investment in McMoRan Exploration Co. (MMR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain |  | 128,000,000 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain |  | 0 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 5,235,000,000 us-gaap_SalesRevenueNet | [2] | 5,696,000,000 us-gaap_SalesRevenueNet | [2] | 5,522,000,000 us-gaap_SalesRevenueNet | [2] | 4,985,000,000 us-gaap_SalesRevenueNet | [2] | 5,885,000,000 us-gaap_SalesRevenueNet | [3] | 6,165,000,000 us-gaap_SalesRevenueNet | [3] | 4,288,000,000 us-gaap_SalesRevenueNet | [3] | 4,583,000,000 us-gaap_SalesRevenueNet |  | 21,438,000,000 us-gaap_SalesRevenueNet | [2],[4] | 20,921,000,000 us-gaap_SalesRevenueNet | [3],[4] | 18,010,000,000 us-gaap_SalesRevenueNet | [4] |  |  |  |  |  |  |  |  |  |  |  |
Operating income | (3,299,000,000)us-gaap_OperatingIncomeLoss | [5],[6] | 1,132,000,000 us-gaap_OperatingIncomeLoss | [5],[6] | 1,153,000,000 us-gaap_OperatingIncomeLoss |  | 1,111,000,000 us-gaap_OperatingIncomeLoss |  | 1,650,000,000 us-gaap_OperatingIncomeLoss | [7],[8] | 1,707,000,000 us-gaap_OperatingIncomeLoss | [8] | 639,000,000 us-gaap_OperatingIncomeLoss | [8] | 1,355,000,000 us-gaap_OperatingIncomeLoss | [8] | 97,000,000 us-gaap_OperatingIncomeLoss | [5],[6] | 5,351,000,000 us-gaap_OperatingIncomeLoss | [7],[8] | 5,814,000,000 us-gaap_OperatingIncomeLoss |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  | 4,000,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  | 1,000,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  | 61,000,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  | 14,000,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  |  |  | 80,000,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances | (22,000,000)fcx_IncomeTaxExpenseBenefitChangesinDeferredTaxLiabilitiesandDeferredTaxAssetValuationAllowances |  | (5,000,000)fcx_IncomeTaxExpenseBenefitChangesinDeferredTaxLiabilitiesandDeferredTaxAssetValuationAllowances |  | (57,000,000)fcx_IncomeTaxExpenseBenefitChangesinDeferredTaxLiabilitiesandDeferredTaxAssetValuationAllowances |  |  |  |  |  |  |  |  |  |  |  | (84,000,000)fcx_IncomeTaxExpenseBenefitChangesinDeferredTaxLiabilitiesandDeferredTaxAssetValuationAllowances |  | 190,000,000 fcx_IncomeTaxExpenseBenefitChangesinDeferredTaxLiabilitiesandDeferredTaxAssetValuationAllowances |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Finance Costs, Noncurrent, Net | 141,000,000 us-gaap_DeferredFinanceCostsNoncurrentNet |  |  |  |  |  |  |  | 107,000,000 us-gaap_DeferredFinanceCostsNoncurrentNet |  |  |  |  |  |  |  | 141,000,000 us-gaap_DeferredFinanceCostsNoncurrentNet |  | 107,000,000 us-gaap_DeferredFinanceCostsNoncurrentNet |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Oil and Gas Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 77,000,000 us-gaap_GainLossOnSaleOfOilAndGasProperty |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
8% Convertible Perpetual Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.00%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = fcx_A8ConvertiblePerpetualPreferredStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
5.75% Convertible Perpetual Preferred Stock, Series 1 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.75%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = fcx_A5.75ConvertiblePerpetualPreferredStockSeries1Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deepwater Gulf of Mexico Interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Asset Retirement Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 fcx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAssetRetirementCosts / us-gaap_BusinessAcquisitionAxis = fcx_DeepwaterGulfofMexicoInterestsMember |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  | Sep. 08, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 30, 2014 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | 496,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = fcx_DeepwaterGulfofMexicoInterestsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 918,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = fcx_DeepwaterGulfofMexicoInterestsMember |  |  |  |  |  |  |  |  |  |  |
Business Combination, Adjustment to Recognized Identifiable Assets Acquired and Liabilities Assumed Oil and Gas Properties Subject to Depletion |  |  | 509,000,000 fcx_BusinessCombinationAdjustmenttoRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOilandGasPropertiesSubjecttoDepletion / us-gaap_BusinessAcquisitionAxis = fcx_DeepwaterGulfofMexicoInterestsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 451,000,000 fcx_BusinessCombinationAdjustmenttoRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOilandGasPropertiesSubjecttoDepletion / us-gaap_BusinessAcquisitionAxis = fcx_DeepwaterGulfofMexicoInterestsMember |  |  |  |  |  |  |  |  |  |  |
Business Combination, Adjustment to Recognized Identifiable Assets Acquired and Liabilities Assumed Oil and Gas Properties Not Subject to Depletion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 477,000,000 fcx_BusinessCombinationAdjustmenttoRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOilandGasPropertiesNotSubjecttoDepletion / us-gaap_BusinessAcquisitionAxis = fcx_DeepwaterGulfofMexicoInterestsMember |  |  |  |  |  |  |  |  |  |  |
Eagle Ford [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Apr. 01, 2014 |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances |  |  |  |  | 84,000,000 fcx_IncomeTaxExpenseBenefitChangesinDeferredTaxLiabilitiesandDeferredTaxAssetValuationAllowances / us-gaap_BusinessAcquisitionAxis = fcx_EagleFordMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,100,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = fcx_EagleFordMember |  |  |  |  |  |  |  |  |  |  |
Deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 414,000,000 us-gaap_Deposits / us-gaap_BusinessAcquisitionAxis = fcx_EagleFordMember | 1,300,000,000 us-gaap_Deposits / us-gaap_BusinessAcquisitionAxis = fcx_EagleFordMember |  |  |  |  |
Plains Exploration & Production Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable, Date to be Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 31, 2013 |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 31, 2013 |  |  |  |  |  | May 31, 2013 |  |  |  |  |  |  |  |  |
Business Acquisition, Agreed-Upon Equity Interest Issued or Issuable, Number of Shares Per Share of Target Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.6531 fcx_BusinessAcquisitionAgreedUponEquityInterestIssuedorIssuableNumberofSharesofTargetCompany / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Acquisitions, Agreed-Upon Cost of Entity Acquired, Cash Paid Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25.00 fcx_BusinessAcquisitionsAgreedUponCostOfEntityAcquiredCashPaidPerShare / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 91,161,000 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,800,000,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 411,000,000 us-gaap_PaymentsOfDividends / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3 us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  |  |  | 6,639,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,639,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  | 6,639,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 132,280,000 us-gaap_CommonStockSharesOutstanding / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Excluding Shares Related to Employee Stock-based Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 86,392,000 fcx_BusinessAcquisitionEquityInterestIssuedorIssuableNumberofSharesExcludingSharesRelatedtoEmployeeStockbasedAwards / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Related to Employee Stock-based Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,769,000 fcx_BusinessAcquisitionEquityInterestIssuedorIssuableNumberofSharesRelatedtoEmployeeStockbasedAwards / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31.05 us-gaap_SharePrice / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,831,000,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Payment to Acquire Businesses, Excluding Payments for Employee Stock-based Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,725,000,000 fcx_PaymenttoAcquireBusinessesExcludingPaymentsforEmployeeStockbasedAwards / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember | [9] |  |  |  |  |  |  |  |
Other Payments to Acquire Businesses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 83,000,000 us-gaap_OtherPaymentsToAcquireBusinesses / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Payment to Acquire Businesses, Per Share Consideration, Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,300,000,000 fcx_PaymenttoAcquireBusinessesConsiderationTotal / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Payment to Acquire Businesses, Consideration for Equity Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,000,000 fcx_PaymenttoAcquireBusinessesConsiderationforEquityAwards / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  | 848,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 848,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember | [1] |  |  |  |  |  |  |  |  |  |
Deferred Finance Costs, Noncurrent, Net |  |  |  |  |  |  |  |  | 96,000,000 us-gaap_DeferredFinanceCostsNoncurrentNet / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |  | 96,000,000 us-gaap_DeferredFinanceCostsNoncurrentNet / us-gaap_BusinessAcquisitionAxis = fcx_PlainsExplorationProductionCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
McMoRan Exploration Co [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 03, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisitions, Agreed-Upon Cost of Entity Acquired, Cash Paid Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14.75 fcx_BusinessAcquisitionsAgreedUponCostOfEntityAcquiredCashPaidPerShare / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,720,000,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  |  |  | 3,128,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,128,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  | 3,128,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |
Share Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 16.63 us-gaap_SharePrice / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  | $ 16.75 us-gaap_SharePrice / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |
Payment to Acquire Businesses, Excluding Payments for Employee Stock-based Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,657,000,000 fcx_PaymenttoAcquireBusinessesExcludingPaymentsforEmployeeStockbasedAwards / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |
Other Payments to Acquire Businesses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 63,000,000 us-gaap_OtherPaymentsToAcquireBusinesses / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |
Buinsess Acquisition, Agreed-Upon Royalty Trust Units Issued or Issuable, Per Share of Target Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.15 fcx_BuinsessAcquisitionAgreedUponRoyaltyTrustUnitsIssuedorIssuableofTargetCompany / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |
Royalty Interest in Future Production |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00%fcx_RoyaltyInterestInFutureProduction / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |
Business Acquisition, Date of Acquisition Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 05, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Owned, Balance, Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51,000,000 us-gaap_InvestmentOwnedBalanceShares / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  | 0 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember | [1] | 848,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |
Number Of Shares Of Investee Preferred Stock Purchased |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 fcx_NumberOfSharesOfInvesteePreferredStockPurchased / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.75%us-gaap_PreferredStockDividendRatePercentage / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |
Cost-method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 432,000,000 us-gaap_CostMethodInvestments / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,400,000,000 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1 / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |
Gain on investment in McMoRan Exploration Co. (MMR) |  |  |  |  | 128,000,000 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  | 128,000,000 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  | 128,000,000 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
McMoRan Exploration Co [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 112,362,000.000 us-gaap_CommonStockSharesOutstanding / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember | [10] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 854,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember |  |  |  |
McMoRan Exploration Co [Member] | 5.75% Convertible Perpetual Preferred Stock, Series 2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 554,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcx_McmoranExplorationCoMember / us-gaap_StatementClassOfStockAxis = fcx_A5.75ConvertiblePerpetualPreferredStockSeries2Member |  |  |  |
Kokkola Cobalt Chemicals Refinery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 29, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,000,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's direct ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56.00%us-gaap_InvestmentOwnedPercentOfNetAssets / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 382,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Cash Consideration Funding Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 70.00%fcx_BusinessAcquisitionCashConsiderationFundingPercentage / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110,000,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember |  |
Buisness Combination, Term of Contingent Consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intersubsegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  |  |  | (848,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = us-gaap_IntersubsegmentEliminationsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (848,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = us-gaap_IntersubsegmentEliminationsMember |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  | (848,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = us-gaap_IntersubsegmentEliminationsMember | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (848,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = us-gaap_IntersubsegmentEliminationsMember | [1] |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,500,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |
Proceeds from Issuance of Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,970,000,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 6,400,000,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 2,970,000,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | 4,000,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember
Term of Debt Agreement |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oil and Gas Operations Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,710,000,000 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [11] | 2,616,000,000 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember | [11] | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4,479,000,000)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember |  | 450,000,000 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember |  | 0 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 74,000,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_StatementBusinessSegmentsAxis = fcx_OilAndGasOperationsSegmentMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lundin Mining Corporation [Member] | Kokkola Cobalt Chemicals Refinery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember / invest_InvestmentContractCounterpartyAxis = fcx_LundinMiningCorporationMember |  |
Business Acquisition, Cash Consideration Funding Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30.00%fcx_BusinessAcquisitionCashConsiderationFundingPercentage / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember / invest_InvestmentContractCounterpartyAxis = fcx_LundinMiningCorporationMember |  |
La Generale des Carrieres et des Mines [Member] | Kokkola Cobalt Chemicals Refinery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = fcx_KokkolaCobaltChemicalsRefineryMember / invest_InvestmentContractCounterpartyAxis = fcx_LaGeneraleDesCarrieresEtDesMinesMember |  |
[1] | PXP owned 51 million shares of MMR common stock, which were eliminated in FCX's consolidated balance sheet at the acquisition date of MMR.
[2] | Includes credits (charges) of $15 million ($9 million to net income attributable to common stockholders or $0.01 per share) in the first quarter, $(7) million ($(4) million to net income attributable to common stockholders) in the second quarter, $122 million ($76 million to net income attributable to common stockholders or $0.07 per share) in the third quarter, $497 million ($309 million to net loss attributable to common stockholders or $0.30 per share) in the fourth quarter and $627 million ($389 million to net loss attributable to common stockholders or $0.37 per share) for the year for net unrealized and noncash realized gains (losses) on crude oil and natural gas derivative contracts.
[3] | Includes charges of $36 million ($23 million to net income attributable to common stockholders or $0.02 per share) in the second quarter, $158 million ($98 million to net income attributable to common stockholders or $0.09 per share) in the third quarter, $118 million ($73 million to net income attributable to common stockholders or $0.07 per share) in the fourth quarter and $312 million ($194 million to net income attributable to common stockholders or $0.19 per share) for the year (reflecting the seven-month period from June 1, 2013, to December 31, 2013) for unrealized and noncash realized losses on crude oil and natural gas derivative contracts.
[4] | Revenues are attributed to countries based on the location of the customer.
[5] | Includes net gains of $46 million ($31 million to net income attributable to common stockholders or $0.03 per share) in third quarter, $671 million ($450 million to net loss attributable to common stockholders or $0.43 per share) in the fourth quarter and $717 million ($481 million to net loss attributable to common stockholders or $0.46 per share) for the year primarily from the sale of the Candelaria and Ojos del Salado copper mining operations in the fourth quarter (refer to Note 2 for further discussion) and the sale of a metals injection molding plant in the third quarter.
[6] | Includes a charge of $308 million ($192 million to net income attributable to common stockholders or $0.18 per share) in the third quarter, $3.4 billion ($2.1 billion to net loss attributable to common stockholders or $2.05 per share) in the fourth quarter and $3.7 billion ($2.3 billion to net loss attributable to common stockholders or $2.24 per share) for the year to reduce the carrying value of oil and gas properties pursuant to full cost accounting rules. Additionally, the fourth quarter and the year includes a goodwill impairment charge of $1.7 billion ($1.65 per share) for the full carrying value of goodwill.
[7] | Includes charges in the fourth quarter and for the year of (i) $76 million ($49 million to net income attributable to common stockholders or $0.05 per share) associated with updated mine plans at Morenci that resulted in a loss in recoverable copper in leach stockpiles, (ii) $37 million ($23 million to net income attributable to common stockholders or $0.02 per share) associated with the restructuring of an executive employment arrangement and (iii) $36 million ($13 million to net income attributable to common stockholders or $0.01 per share) associated with a new labor agreement at Cerro Verde.
[8] | Includes charges of $14 million ($10 million to net income attributable to common stockholders or $0.01 per share) in the first quarter, $61 million ($36 million to net income attributable to common stockholders or $0.04 per share) in the second quarter, $1 million ($1 million to net income attributable to common stockholders) in the third quarter, $4 million ($3 million to net income attributable to common stockholders) in the fourth quarter and $80 million ($50 million to net income attributable to common stockholders or $0.05 per share) for the year for transaction and related costs principally associated with the acquisitions of PXP and MMR.
[9] | Cash consideration includes the payment of $25.00 in cash for each PXP share ($3.3 billion), cash paid in lieu of any fractional shares of FCX common stock, cash paid for certain equity awards ($7 million) and the value of the $3 per share PXP special cash dividend ($411 million) paid on May 31, 2013.
[10] | Excludes 51 million shares of MMR common stock owned by FCX through its acquisition of PXP on May 31, 2013.
[11] | Includes net mark-to-market gains (losses) associated with crude oil and natural gas derivative contracts totaling $505 million in 2014 and $(334) million for the period from June 1, 2013, to December 31, 2013.

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- Definition Consideration in number of royalty trust units issued or issuable to acquire entity, as stated in merger agreement. + References No definition available. + Details
Name: | fcx_BuinsessAcquisitionAgreedUponRoyaltyTrustUnitsIssuedorIssuableofTargetCompany
Namespace Prefix: | fcx_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
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- Definition Adjustment during the period to the amount of oil and gas properties not subject to depletion recognized as of the acquisition date. + References No definition available. + Details
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- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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