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v2.4.1.9

Debt and Equity Transactions (Unaudited) (Details) (USD $) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014 | Feb. 27, 2015
Extinguishment of Debt [Line Items] |  |  |
Long-term Debt, Gross | $ 20,300,000,000 us-gaap_DebtInstrumentCarryingAmount |  |
Liabilities, Fair Value Adjustment | 233,000,000 us-gaap_LiabilitiesFairValueAdjustment |  |
Debt Instrument, Unamortized Discount (Premium), Net | 21,000,000 us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet |  |
Unamortized Debt Issuance Expense | 122,000,000 us-gaap_UnamortizedDebtIssuanceExpense | 121,000,000 us-gaap_UnamortizedDebtIssuanceExpense |
Bank Term Loan [Member] |  |  |
Extinguishment of Debt [Line Items] |  |  |
Debt Instrument, Face Amount | 4,000,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember |  |
Long-term Debt, Maturities, Repayments of Principal in Year Two |  | 650,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember | 205,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember
Long-term Debt, Maturities, Repayments of Principal in Year Three |  | 200,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember | 272,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember
Long-term Debt, Maturities, Repayments of Principal in Year Four |  | 2,200,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember | 1,000,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember
Long-term Debt, Maturities, Repayments of Principal in Year Five |  |  | 313,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember
Long-term Debt, Maturities, Repayments of Principal after Year Five |  |  | 1,300,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive / us-gaap_LongtermDebtTypeAxis = fcx_BankTermLoanMember
Credit Facility [Domain] | Revolving Credit Facility [Member] |  |  |
Extinguishment of Debt [Line Items] |  |  |
Long-term Debt, Gross | 985,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Letters of Credit Outstanding, Amount | 42,000,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Line of Credit Facility, Remaining Borrowing Capacity | 3,000,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Line Of Credit Facility Remaining Borrowing Capacity Available For Letters Of Credit | 1,500,000,000 fcx_LineOfCreditFacilityRemainingBorrowingCapacityAvailableForLettersOfCredit / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Cerro Verde [Member] | Credit Facility [Domain] |  |  |
Extinguishment of Debt [Line Items] |  |  |
Long-term Debt, Gross | 847,000,000 us-gaap_DebtInstrumentCarryingAmount / dei_LegalEntityAxis = fcx_CerroVerdeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Line of Credit Facility, Maximum Borrowing Capacity | 1,800,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / dei_LegalEntityAxis = fcx_CerroVerdeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Line of Credit Facility, Increase (Decrease), Other, Net | 422,000,000 us-gaap_LineOfCreditFacilityIncreaseDecreaseOtherNet / dei_LegalEntityAxis = fcx_CerroVerdeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Letters of Credit Outstanding, Amount | $ 0 us-gaap_LettersOfCreditOutstandingAmount / dei_LegalEntityAxis = fcx_CerroVerdeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CreditFacilityDomain |  |
Term of Debt Agreement | 5 years |  |

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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