XML 130 R95.htm IDEA: XBRL DOCUMENT
v3.20.1

EXPLORATION, EVALUATION AND PROJECT EXPENSES (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items] |  |
Minesite exploration and evaluation | $ 69 | $ 45
Global exploration and evaluation | 143 | 121
Corporate development2 | 51 | 60
Business improvement and innovation | 10 | 44
Total exploration, evaluation and project expenses | 342 | 383
Acquisition-related costs for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination | 18 |
Pascua-Lama |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Advanced project costs | 49 | 77
Other [Member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Advanced project costs | 20 | $ 36
Randgold |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Acquisition-related costs for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination | 37 |
Nevada Gold Mines, KCGM and Acacia [Member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Acquisition-related costs for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination | $ 44 |

X
- Definition Expense arising from exploration for and evaluation of mineral resources, advanced project costs + References No definition available. + Details
Name: | abx_AdvancedprojectCosts
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expense arising from exploration for and evaluation of mineral resources, business improvement + References No definition available. + Details
Name: | abx_BusinessImprovementandInnovation
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expense arising from exploration for and evaluation of mineral resources, corporate development + References No definition available. + Details
Name: | abx_Corporatedevelopment
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expense arising from exploration for and evaluation of mineral resources, global exploration and evaluation + References No definition available. + Details
Name: | abx_Globalexplorationandevaluation
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expense arising from exploration for and evaluation of mineral resources, minesite exploration and evaluation + References No definition available. + Details
Name: | abx_Minesiteexplorationandevaluation
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of acquisition-related costs for transactions recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B64 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_m&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
Name: | ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 expense arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2018-01-01 -Paragraph 24 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=6&date=2018-03-01&anchor=para_24_b&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | abx_InvestmentName1Axis=abx_PascuaLama1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | abx_InvestmentName1Axis=abx_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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