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OTHER EXPENSE (INCOME) - Other Expense (Income) (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 28, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Other Operating Expenses [Abstract] |  |  |
Litigation |  | $ 19 | $ 26
Write-offs (reversals) |  | (1) | 3
Bulyanhulu reduced operations program costs1 |  | 22 | 24
Bank charges |  | 16 | 16
Porgera care and maintenance costs |  | 51 | 0
Donations and subsidies expense |  | 24 | 0
Acquisition-related costs for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination |  | 0 | 18
Tanzania - other |  | 0 | 11
Other |  | 20 | 28
Total other expense |  | 151 | 126
Other Income: |  |  |
(Gain) loss on sale of long-lived assets |  | (180) | (441)
Adjustments for fair value losses (gains) |  | 0 | (1,886)
Gain on remeasurement of silver sale liability |  | (104) | (628)
Lumwana tax settlement gain |  | 0 | (216)
Peru tax disputes settlement |  | (7) | 18
Gain on warrant investments at FVPL |  | 9 | 0
(Gain) loss on non-hedge derivatives |  | (10) | 0
Interest income |  | (21) | (20)
Other |  | (12) | (17)
Total other income |  | (329) | (3,226)
Total |  | (178) | (3,100)
KCGM |  |  |
Other Income: |  |  |
Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation | $ 408 |  | $ 408
Eskay Creek [Member] |  |  |
Other Income: |  |  |
Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation |  | 59 |
Massawa [Member] |  |  |
Other Income: |  |  |
Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation |  | 54 |
Morila [Member] |  |  |
Other Income: |  |  |
Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation |  | 27 |
Bullfrog Mine [Member] |  |  |
Other Income: |  |  |
Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation |  | $ 22 |

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