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PROPERTY, PLANT AND EQUIPMENT - Mineral Property Costs Not Subject to Depreciation (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | $ 24,628 | $ 24,141 | $ 12,826
MIning property costs not subject to depreciation |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 3,586 | 4,100 | $ 2,968
MIning property costs not subject to depreciation | Norte Abierto Project |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 653 | 649 |
MIning property costs not subject to depreciation | Donlin Gold |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 198 | 184 |
MIning property costs not subject to depreciation | Pascua-Lama |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 741 | 754 |
Construction-in-progress |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 1,208 | 1,009 |
Acquired mineral resources and exploration potential |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | $ 786 | $ 1,504 |

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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_a&doctype=Standard -URIDate 2019-03-27 + Details
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