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NON-CONTROLLING INTERESTS - Activity (Details) - USD ($) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 01, 2020 | Sep. 17, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interests held by non-controlling interests | 16.00% |  |  |
Non-controlling interests, beginning balance | $ 8,395 |  | $ 1,792 |
Share of income (loss) |  |  | 605 | $ 110
Cash contributed |  |  | 140 | 24
Disbursements |  |  | (429) | (123)
Non-controlling interests, ending balance |  |  | 8,395 | 1,792
Subsidiaries |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Non-controlling interests, beginning balance | 8,395 |  | 1,792 | 1,781
Share of income (loss) |  |  | 605 | 110
Acquisitions |  |  | 6,782 |
Cash contributed |  |  | 140 | 24
Cash contributed |  |  | (495) |
Disbursements |  |  | (429) | (123)
Non-controlling interests, ending balance |  |  | $ 8,395 | 1,792
Nevada Gold Mines |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 39.00% |
Non-controlling interests, beginning balance | 6,039 |  | $ 0 | 0
Share of income (loss) |  |  | 275 | 0
Acquisitions |  |  | 5,910 |
Cash contributed |  |  | 90 | 0
Cash contributed |  |  | 0 |
Disbursements |  |  | (236) | 0
Non-controlling interests, ending balance |  |  | $ 6,039 | 0
Pueblo Viejo |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 40.00% |
Non-controlling interests, beginning balance | 1,424 |  | $ 1,271 | 1,290
Share of income (loss) |  |  | 311 | 89
Acquisitions |  |  | 0 |
Cash contributed |  |  | 0 | 0
Cash contributed |  |  | 0 |
Disbursements |  |  | (158) | (108)
Non-controlling interests, ending balance |  |  | $ 1,424 | 1,271
Acacia Mining PLC |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interests held by non-controlling interests |  | 36.10% | 0.00% |
Non-controlling interests, beginning balance | 0 |  | $ 502 | 480
Share of income (loss) |  |  | (7) | 22
Acquisitions |  |  | 0 |
Cash contributed |  |  | 0 | 0
Cash contributed |  |  | (495) |
Disbursements |  |  | 0 | 0
Non-controlling interests, ending balance |  |  | $ 0 | 502
Loulo Gounkoto |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 20.00% |
Non-controlling interests, beginning balance | 901 |  | $ 0 | 0
Share of income (loss) |  |  | 30 | 0
Acquisitions |  |  | 887 |
Cash contributed |  |  | 0 | 0
Cash contributed |  |  | 0 |
Disbursements |  |  | (16) | 0
Non-controlling interests, ending balance |  |  | $ 901 | 0
Tongon |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 10.30% |
Non-controlling interests, beginning balance | 47 |  | $ 0 | 0
Share of income (loss) |  |  | (3) | 0
Acquisitions |  |  | 61 |
Cash contributed |  |  | 0 | 0
Cash contributed |  |  | 0 |
Disbursements |  |  | (11) | 0
Non-controlling interests, ending balance |  |  | 47 | 0
Other |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Non-controlling interests, beginning balance | $ (16) |  | 19 | 11
Share of income (loss) |  |  | (1) | (1)
Acquisitions |  |  | (76) |
Cash contributed |  |  | 50 | 24
Cash contributed |  |  |  |
Disbursements |  |  | (8) | (15)
Non-controlling interests, ending balance |  |  | $ (16) | $ 19

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