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OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS (Restructuring Charges) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |
Production and delivery |  | $ 11,691 | $ 10,266 | $ 10,687
Selling, general and administrative expenses |  | 443 | 477 | 597
Selling, General and Administrative Expenses |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | 85
Cost of Sales |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | 6
Foreign Plan [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment |  |  | (4) |
Indonesia |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Production and delivery | $ 62 |  |  |
Indonesia | Operating Segments | Grasberg Segment [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Production and delivery |  | 1,864 | 1,735 | 1,775
Selling, general and administrative expenses |  | $ 123 | 126 | $ 88
Indonesia | Operating Segments | Grasberg Segment [Member] | One-time Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Production and delivery |  |  | 120 |
Selling, general and administrative expenses |  |  | $ 5 |

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