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NON-CONTROLLING INTERESTS - Continuity (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling interests | $ 8,485 |  | $ 8,485 |  | $ 8,369 | $ 8,395
Profit (loss), attributable to non-controlling interests | 283 | $ 265 | 575 | $ 528 | 1,290 |
Cash contributed |  |  | 12 | 1 | 11 |
Increase (decrease) in non-controlling interest |  |  |  |  | 251 |
Disbursements |  |  | $ (471) | $ (448) | (1,578) |
Nevada Gold Mines [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 38.50% |  |  |
Non-controlling interests | 6,027 |  | $ 6,027 |  | 5,978 | 6,039
Profit (loss), attributable to non-controlling interests |  |  | 420 |  | 965 |
Cash contributed |  |  | 0 |  | 0 |
Increase (decrease) in non-controlling interest |  |  |  |  | 0 |
Disbursements |  |  | $ (371) |  | (1,026) |
Pueblo Viejo |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 40.00% |  |  |
Non-controlling interests | 1,228 |  | $ 1,228 |  | 1,193 | 1,424
Profit (loss), attributable to non-controlling interests |  |  | 96 |  | 196 |
Cash contributed |  |  | 0 |  | 0 |
Increase (decrease) in non-controlling interest |  |  |  |  | 0 |
Disbursements |  |  | $ (61) |  | (427) |
Tanzania Mines [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 16.00% |  |  |
Non-controlling interests | 281 |  | $ 281 |  | 263 | 0
Profit (loss), attributable to non-controlling interests |  |  | 18 |  | 57 |
Cash contributed |  |  | 0 |  | 0 |
Increase (decrease) in non-controlling interest |  |  |  |  | 251 |
Disbursements |  |  | $ 0 |  | (45) |
Loulo Gounkoto [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 20.00% |  |  |
Non-controlling interests | 943 |  | $ 943 |  | 933 | 901
Profit (loss), attributable to non-controlling interests |  |  | 39 |  | 68 |
Cash contributed |  |  | 0 |  | 0 |
Increase (decrease) in non-controlling interest |  |  |  |  | 0 |
Disbursements |  |  | $ (29) |  | (36) |
Tongon [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  | 10.30% |  |  |
Non-controlling interests | 41 |  | $ 41 |  | 39 | 47
Profit (loss), attributable to non-controlling interests |  |  | 2 |  | 9 |
Cash contributed |  |  | 0 |  | 0 |
Increase (decrease) in non-controlling interest |  |  |  |  | 0 |
Disbursements |  |  | 0 |  | (17) |
Other subsidiaries [Member] |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |
Non-controlling interests | $ (35) |  | (35) |  | (37) | $ (16)
Profit (loss), attributable to non-controlling interests |  |  | 0 |  | (5) |
Cash contributed |  |  | 12 |  | 11 |
Increase (decrease) in non-controlling interest |  |  |  |  | 0 |
Disbursements |  |  | $ (10) |  | $ (27) |

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