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SIGNIFICANT JUDGMENTS, ESTIMATES, ASSUMPTIONS AND RISKS (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Disclosure of Detailed Information About Accounting Judgments and Estimates [Line Items] |  |  |  |  |
Increase (decrease) in other provisions | $ 69 | $ 24 | $ 271 | $ 82 |
Pascua-Lama | Chile |  |  |  |  |
Disclosure of Detailed Information About Accounting Judgments and Estimates [Line Items] |  |  |  |  |
Amounts received from VAT refunds | 458 |  | 458 |  | $ 443
Interest payable | 379 |  | 379 |  | 340
Revenue, performance obligation | 3,538 |  | 3,538 |  |
Pascua-Lama | Argentina |  |  |  |  |
Disclosure of Detailed Information About Accounting Judgments and Estimates [Line Items] |  |  |  |  |
Value added tax receivables | $ 100 |  | $ 100 |  | $ 112

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