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OWNERSHIP IN SUBSIDIARIES AND JOINT VENTURES (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2013 | Dec. 31, 2012
Summary of investment holdings [Line Items] |  |  |
Retained earnings (accumulated deficit) of subsidiary |  | $ 2,742,000,000 | $ 2,399,000,000
Morenci [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Percentage of undivided interest owned by company |  | 85.00% |
Other North America Mines [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 100.00% |
Cerro Verde [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 53.56% |
El Abra [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 51.00% |
Candelaria [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 80.00% |
Ojos Del Salado [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 80.00% |
Tenke [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 56.00% |
Freeport-McMoRan Corporation [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Net assets (liabilities) in subsidiary |  | 20,300,000,000 |
Retained earnings (accumulated deficit) of subsidiary |  | (9,000,000,000) |
FCX loans outstanding |  | 0 |
Number of pounds of copper purchased from Sumitomo |  | 76,000,000 |
Dollar value of pounds purchased from Sumitomo |  | 253,000,000 |
Net receivable from Sumitomo |  | 12,000,000 | 49,000,000
PT Freeport Indonesia [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 81.28% |
Net assets (liabilities) in subsidiary |  | 4,900,000,000 |
Retained earnings (accumulated deficit) of subsidiary |  | 4,700,000,000 |
FCX loans outstanding |  | 0 |
Percentage of cash flows from specified annual amounts of copper, gold and silver calculated by reference to proven and probable reserves as of 12/31/1994 (in hundredths) |  | 100.00% |
Percentage of remaining cash flows |  | 60.00% |
Reduction in Specified Copper Production Resulting from Labor and Pipeline Disruptions (in pounds) |  | 228,000,000 |
Reduction in Specified Gold Production Resulting from Labor and Pipeline Disruptions (in ounces) |  | 224,000 |
PT Indocopper Investama [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 100.00% |
Company's indirect ownership percentage of a subsidiary through another wholly owned subsidiary |  | 9.36% |
Atlantic Copper [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 100.00% |
Net assets (liabilities) in subsidiary |  | (148,000,000) |
Retained earnings (accumulated deficit) of subsidiary |  | (543,000,000) |
FCX loans outstanding |  | 642,000,000 |
Freeport-McMoRan Oil & Gas [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Company's direct ownership percentage |  | 100.00% |
Net assets (liabilities) in subsidiary |  | (9,800,000,000) |
Retained earnings (accumulated deficit) of subsidiary |  | (265,000,000) |
FCX loans outstanding |  | 3,400,000,000 |
Rio Tinto Share In Joint Venture [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Percentage interest in joint venture contract of work by third party |  | 40.00% |
Percentage of optional participation of any other future exploration costs shared by joint venture |  | 40.00% |
Percent interest in certain assets and future production per terms of the joint venture agreement | 40.00% | 40.00% |
Payable to joint venture interests for its share of cash flows |  | $ 33,000,000 | $ 4,000,000
Sumitomo's Share in Joint Venture [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Percentage of undivided interest owned by third party |  | 15.00% |

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