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NON-CONTROLLING INTERESTS - Activity (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of subsidiaries [line items] |  |
Non-controlling interests, beginning balance | $ 2,378 |
Share of income (loss) | 78 | $ 206
Cash contributed | 13 | 70
Decrease in non-controlling interest | 493 |
Disbursements | (195) | (175)
Non-controlling interests, ending balance | 1,781 | 2,378
Subsidiaries |  |
Disclosure of subsidiaries [line items] |  |
Non-controlling interests, beginning balance | 2,378 | 2,277
Share of income (loss) | 78 | 206
Cash contributed | 13 | 70
Decrease in non-controlling interest | (493) |
Disbursements | (195) | (175)
Non-controlling interests, ending balance | $ 1,781 | 2,378
Pueblo Viejo |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interests held by non-controlling interests | 40.00% |
Non-controlling interests, beginning balance | $ 1,311 | 1,232
Share of income (loss) | 118 | 174
Cash contributed | 0 | 0
Decrease in non-controlling interest | 0 |
Disbursements | (139) | (95)
Non-controlling interests, ending balance | $ 1,290 | 1,311
Acacia |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interests held by non-controlling interests | 36.10% |
Non-controlling interests, beginning balance | $ 704 | 677
Share of income (loss) | (211) | 34
Cash contributed | 0 | 0
Decrease in non-controlling interest | 0 |
Disbursements | (13) | (7)
Non-controlling interests, ending balance | $ 480 | 704
Cerro Casale |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interests held by non-controlling interests | 25.00% |
Non-controlling interests, beginning balance | $ 319 | 318
Share of income (loss) | 173 | (1)
Cash contributed | 1 | 2
Decrease in non-controlling interest | (493) |
Disbursements | 0 | 0
Non-controlling interests, ending balance | 0 | 319
Other |  |
Disclosure of subsidiaries [line items] |  |
Non-controlling interests, beginning balance | 44 | 50
Share of income (loss) | (2) | (1)
Cash contributed | 12 | 68
Decrease in non-controlling interest | 0 |
Disbursements | (43) | (73)
Non-controlling interests, ending balance | $ 11 | $ 44

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