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SUPPLEMENTARY MINERAL RESERVE INFORMATION (UNAUDITED) (Details) | Dec. 31, 2014 lb
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Supplementary Mineral Reserve Information [Abstract] |
Long-term average price for copper used to estimate recoverable reserves (in dollars per pound) | 2.00 fcx_LongTermAveragePriceForCopperUsedToEstimateRecoverableReserves
Long-term average price for gold used to estimate recoverable reserves (in dollars per ounce) | 1,000 fcx_LongTermAveragePriceForGoldUsedToEstimateRecoverableReserves
Long-term average price for molybdenum used to estimate recoverable reserves (in dollars per pound) | 10 fcx_LongTermAveragePriceForMolybdenumUsedToEstimateRecoverableReserves
Long-term average price for silver used to estimate recoverable reserves (in dollars per ounce) | 15 fcx_LongTermAveragePriceForSilverUsedToEstimateRecoverableReserves
Long-term average price for cobalt used to estimate recoverable reserves (in dollars per pound) | 10 fcx_LongTermAveragePriceForCobaltUsedToEstimateRecoverableReserves
Three-year average London spot price for copper (per pound) | 3.35 fcx_ThreeYearAverageLondonSpotPriceForCopper
Three-year average London spot price for gold (per ounce) | 1,449 fcx_ThreeYearAverageLondonSpotPriceForGold
Three-year average price for molybdenum (per pound) | 11.50 fcx_ThreeYearAveragePriceForMolybdenum
Estimated recoverable proven and probable copper reserves in leach stockpiles (in pounds) | 3,600,000,000 fcx_EstimatedRecoverableProvenAndProbableCopperReservesInLeachStockpiles
Estimated recoverable proven and probable copper reserves in mill stockpiles (in pounds) | 900,000,000 fcx_EstimatedRecoverableProvenAndProbableCopperReservesInMillStockpiles

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- 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
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- Definition Estimated Recoverable Proven And Probable Copper Reserves In Mill Stockpiles + References No definition available. + Details
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- Definition Long Term Average Price For Cobalt Used To Estimate Recoverable Reserves + References No definition available. + Details
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- Definition Long-term average price for copper used to estimate recoverable reserves (in dollars per pound) + References No definition available. + Details
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- Definition Long-term average price for gold used to estimate recoverable reserves (in dollars per ounce) + References No definition available. + Details
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- Definition Long-term average price for molybdenum used to estimate recoverable reserves (in dollars per pound) + References No definition available. + Details
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- Definition Long-term average price for silver used to estimate recoverable reserves (in dollars per ounce) + References No definition available. + Details
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- Details
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- Definition Three-year average London spot price for copper + References No definition available. + Details
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- Definition Three-year average London spot price for gold + References No definition available. + Details
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- Definition Three-year average price for molybdenum + References No definition available. + Details
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