XML 192 R126.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

SUPPLEMENTARY MINERAL RESERVE INFORMATION (UNAUDITED) (Recoverable Reserves) (Details) oz in Millions, lb in Millions | Jan. 01, 2023 | Jan. 01, 2020 | Dec. 31, 2019 lb oz $ / lb $ / oz | Dec. 21, 2018
--- | --- | --- | --- | ---
Copper |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 120,000 |
Long Term Average Price Used To Estimate Recoverable Reserves | $ / lb |  |  | 2.50 |
Gold (ounces) [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 29.6 |
Long Term Average Price Used To Estimate Recoverable Reserves | $ / oz |  |  | 1,200 |
Molybdenum mines |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 3,640 |
Long Term Average Price Used To Estimate Recoverable Reserves | $ / lb |  |  | 10 |
Silver |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Long Term Average Price Used To Estimate Recoverable Reserves | $ / oz |  |  | 15 |
Net Equity Interest [Member] | Copper |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 83,400 |
Net Equity Interest [Member] | Gold (ounces) [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 16.1 |
Net Equity Interest [Member] | Molybdenum mines |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 3,250 |
Net Equity Interest [Member] | Silver |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 251.0 |
Consolidated Basis [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated recoverable proven and probable copper reserves in leach stockpiles (in pounds) |  |  | 1,700 |
Estimated recoverable proven and probable copper reserves in mill stockpiles (in pounds) |  |  | 500 |
Consolidated Basis [Member] | Copper |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 116,000 |
Consolidated Basis [Member] | Copper | North America |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 47,200 |
Consolidated Basis [Member] | Copper | South America |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 33,200 |
Consolidated Basis [Member] | Copper | Indonesia |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 35,600 |
Consolidated Basis [Member] | Gold (ounces) [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 29.6 |
Consolidated Basis [Member] | Gold (ounces) [Member] | North America |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 0.5 |
Consolidated Basis [Member] | Gold (ounces) [Member] | South America |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 0.0 |
Consolidated Basis [Member] | Gold (ounces) [Member] | Indonesia |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 29.1 |
Consolidated Basis [Member] | Molybdenum mines |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 3,580 |
Consolidated Basis [Member] | Molybdenum mines | North America |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 2,870 |
Consolidated Basis [Member] | Molybdenum mines | South America |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 710 |
Consolidated Basis [Member] | Molybdenum mines | Indonesia |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves |  |  | 0 |
Consolidated Basis [Member] | Silver |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Estimated Recoverable Proven And Probable Reserves | oz |  |  | 375.0 |
PT Freeport Indonesia [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Ownership percentage of subsidiary |  |  | 48.76% |
PT Freeport Indonesia [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Ownership percentage of subsidiary |  |  |  | 48.76%
Forecast [Member] | PT Freeport Indonesia [Member] |  |  |  |
Estimated Recoverable Proven and Probable Reserves [Line Items] |  |  |  |
Ownership percentage of subsidiary | 48.76% | 81.00% |  |

X
- Definition Estimated consolidated recoverable proven and probable copper reserves in leach stockpiles (in billion pounds), including FCX's joint venture partner's interest in the Morenci mine. + References No definition available. + Details
Name: | fcx_EstimatedRecoverableProvenAndProbableCopperReservesInLeachStockpiles
Namespace Prefix: | fcx_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Estimated Recoverable Proven And Probable Copper Reserves In Mill Stockpiles + References No definition available. + Details
Name: | fcx_EstimatedRecoverableProvenAndProbableCopperReservesInMillStockpiles
Namespace Prefix: | fcx_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Estimated Recoverable Proven And Probable Reserves + References No definition available. + Details
Name: | fcx_EstimatedRecoverableProvenAndProbableReserves
Namespace Prefix: | fcx_
Data Type: | num:massItemType
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: | fcx_EstimatedRecoverableProvenAndProbableReservesLineItems
Namespace Prefix: | fcx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long Term Average Price Used To Estimate Recoverable Reserves Per Unit. + References No definition available. + Details
Name: | fcx_LongTermAveragePriceUsedToEstimateRecoverableReserves
Namespace Prefix: | fcx_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

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

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=fcx_MolybdenumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=fcx_SilverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fcx_OreAverageOreGradesAndRecoverableProvenAndProbableReservesByOwnershipBasisAxis=fcx_NetEquityInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fcx_OreAverageOreGradesAndRecoverableProvenAndProbableReservesByOwnershipBasisAxis=fcx_ConsolidatedBasisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_NorthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_SouthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_ID
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_OwnershipAxis=fcx_PtFreeportIndonesiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |