XML 94 R53.htm IDEA: XBRL DOCUMENT
v3.10.0.1

DISPOSITIONS AND ACQUISITIONS (Purchase Price Allocation) (Details) $ in Millions |  | 12 Months Ended
--- | --- | ---
Dec. 21, 2018 USD ($) $ / lb $ / oz | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |
Income tax rate |  | 21.00% | 35.00% | 35.00%
Tax Authority, In Papua, Indonesia |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Income tax rate | 25.00% |  |  |
PT-FI | Rio Tinto Share In Joint Venture |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Current assets | $ 25 |  |  |
Mineral reserves | 3,056 |  |  |
Mine development, infrastructure and other | 1,559 |  |  |
Liabilities other than taxes | (77) |  |  |
Deferred income taxes, net | (1,063) |  |  |
Total purchase price | $ 3,500 |  |  |
PT-FI | Rio Tinto Share In Joint Venture | Copper |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Price assumption per unit (in dollars per unit) | $ / lb | 3.00 |  |  |
PT-FI | Rio Tinto Share In Joint Venture | Gold |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Price assumption per unit (in dollars per unit) | $ / oz | 1,300 |  |  |

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net + References No definition available. + Details
Name: | fcx_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredGoodwillandLiabilitiesAssumedNet
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets + References No definition available. + Details
Name: | fcx_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssets
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities + References No definition available. + Details
Name: | fcx_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDeferredTaxLiabilities
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Excluding Taxes + References No definition available. + Details
Name: | fcx_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesExcludingTaxes
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Mine Development + References No definition available. + Details
Name: | fcx_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedMineDevelopment
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Mineral Reserves + References No definition available. + Details
Name: | fcx_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedMineralReserves
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Price Assumption Per Unit + References No definition available. + Details
Name: | fcx_BusinessCombinationPriceAssumptionPerUnit
Namespace Prefix: | fcx_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityNameAxis=fcx_IndonesiaTaxingAuthorityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=fcx_PtFreeportIndonesiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=fcx_RioTintoShareInJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fcx_MineProductionTypeAxis=fcx_CopperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fcx_MineProductionTypeAxis=us-gaap_GoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |