XML 177 R117.htm IDEA: XBRL DOCUMENT
v3.19.1

PROPERTY, PLANT AND EQUIPMENT - Mineral Property Costs Not Subject to Depreciation (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | $ 12,826 | $ 13,806 | $ 14,103
MIning property costs not subject to depreciation |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 2,968 | 3,071 | $ 2,353
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) | 639 | 612 |
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) | 174 | 166 |
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) | 1,245 | 1,467 |
Construction-in-progress |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | 786 | 640 |
Acquired mineral resources and exploration potential |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment (note 19) | $ 124 | $ 186 |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 2018-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_a&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_PropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=abx_MIningPropertyNotSubjecttoDepreciationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_NorteAbiertoProjectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_DonlinGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentAxis=abx_PascuaLamaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=abx_MIningPropertyNotSubjecttoDepreciationUnderConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=abx_MIningPropertyNotSubjecttoDepreciationAcquiredMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |