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SUPPLEMENTARY MINERAL RESERVE INFORMATION (UNAUDITED) (Ore Reserves) (Details) oz in Millions, lb in Millions, T in Millions | Dec. 31, 2016 lb oz T g
--- | ---
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 13,723
Copper |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 104,600
Copper | Consolidated Basis [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 86,800
Copper | Net Equity Interest [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 70,500
Gold |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 37.6
Gold | Consolidated Basis [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 26.1
Gold | Net Equity Interest [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 23.7
Molybdenum |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 2,990
Molybdenum | Consolidated Basis [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 2,950
Molybdenum | Net Equity Interest [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 2,650
Morenci | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 3,274
Average ore grade of copper per metric ton | 0.27%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.00%
Morenci | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 12,800
Morenci | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Morenci | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 150
Bagdad [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 1,244
Average ore grade of copper per metric ton | 0.32%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.02%
Bagdad [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 7,400
Bagdad [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.1
Bagdad [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 360
Safford [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 75
Average ore grade of copper per metric ton | 0.31%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.00%
Safford [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 600
Safford [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Safford [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Sierrita [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 2,434
Average ore grade of copper per metric ton | 0.23%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.02%
Sierrita [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 10,400
Sierrita [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.1
Sierrita [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 1,040
Tyrone [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 6
Average ore grade of copper per metric ton | 0.51%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.00%
Tyrone [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 200
Tyrone [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Tyrone [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Chino [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 226
Average ore grade of copper per metric ton | 0.47%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.02
Average ore grade of molybdenum per metric ton | 0.00%
Chino [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 2,100
Chino [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.1
Chino [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 10
Miami [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 0
Average ore grade of copper per metric ton | 0.00%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.00%
Miami [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 100
Miami [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Miami [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Henderson [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 77
Average ore grade of copper per metric ton | 0.00%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.17%
Henderson [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Henderson [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Henderson [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 250
Climax [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 170
Average ore grade of copper per metric ton | 0.00%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.15%
Climax [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Climax [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Climax [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 540
Cobre [Member] | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 86
Average ore grade of copper per metric ton | 0.34%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.00%
Cobre [Member] | Copper | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 400
Cobre [Member] | Gold | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Cobre [Member] | Molybdenum | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Cerro Verde | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 3,673
Average ore grade of copper per metric ton | 0.37%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.01%
Cerro Verde | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 26,700
Cerro Verde | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
Cerro Verde | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 640
El Abra | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 431
Average ore grade of copper per metric ton | 0.45%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.00
Average ore grade of molybdenum per metric ton | 0.00%
El Abra | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 2,800
El Abra | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 0.0
El Abra | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Grasberg open pit [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 56
Average ore grade of copper per metric ton | 1.26%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 2.11
Average ore grade of molybdenum per metric ton | 0.00%
Grasberg open pit [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 1,700
Grasberg open pit [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 3.4
Grasberg open pit [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Deep Ore Zone [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 100
Average ore grade of copper per metric ton | 0.51%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.70
Average ore grade of molybdenum per metric ton | 0.00%
Deep Ore Zone [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 1,000
Deep Ore Zone [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 1.8
Deep Ore Zone [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Big Gossan [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 60
Average ore grade of copper per metric ton | 2.19%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.97
Average ore grade of molybdenum per metric ton | 0.00%
Big Gossan [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 2,600
Big Gossan [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 1.3
Big Gossan [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Grasberg block cave [Member] | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 964
Average ore grade of copper per metric ton | 1.03%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.78
Average ore grade of molybdenum per metric ton | 0.00%
Grasberg block cave [Member] | Copper | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 18,500
Grasberg block cave [Member] | Gold | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 15.7
Grasberg block cave [Member] | Molybdenum | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Kucing Liar [Member] | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 408
Average ore grade of copper per metric ton | 1.26%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 1.10
Average ore grade of molybdenum per metric ton | 0.00%
Kucing Liar [Member] | Copper | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 9,700
Kucing Liar [Member] | Gold | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 6.7
Kucing Liar [Member] | Molybdenum | Undeveloped [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0
Deep Mill Level Zone [Member] | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Amount of ore reserves (in metric tons of ore) | T | 439
Average ore grade of copper per metric ton | 0.90%
Average ore grade of gold per metric ton (in grams per metric ton) | g | 0.75
Average ore grade of molybdenum per metric ton | 0.00%
Deep Mill Level Zone [Member] | Copper | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 7,600
Deep Mill Level Zone [Member] | Gold | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | oz | 8.4
Deep Mill Level Zone [Member] | Molybdenum | Productive Land [Member] |
Ore, average ore grades and recoverable proven and probable reserves [Line Items] |
Estimated Recoverable Proven And Probable Reserves | 0

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