XML 100 R66.htm IDEA: XBRL DOCUMENT
v3.19.2

CONTINGENCIES (Details) - USD ($) |  | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 15, 2019 | Jun. 30, 2019 | Jul. 31, 2019 | Jul. 18, 2019 | Jan. 01, 2019 | Dec. 31, 2018
Tethyan Copper Company Pty Limited [Member] |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |
Proportion of ownership interest in joint venture |  | 50.00% |  |  |  |
Percent of ownership by other parties in joint ventures |  | 50.00% |  |  |  |
Funds awarded for damages |  |  | $ 5,840,000,000 |  |  |
Compensation for denial of mining lease |  |  | 4,087,000,000 |  |  |
Interest compounded on claims |  |  | $ 1,753,000,000 |  |  |
Adjustment to interest rate |  |  | 1.00% |  |  |
Estimated financial effect of contingent assets |  |  | $ 0 |  |  |
Randgold [Member] |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |
Tax advances paid to the government | $ 43,000,000 |  |  |  |  |
Acacia Mining PLC [Member] |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |
Payment to Resolve Outstanding Tax Claims |  |  |  |  |  | $ 300,000,000
Initial upfront payment |  | $ 100,000,000 |  |  |  |
MALI | Randgold [Member] |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |
Mali tax amount |  | 275,000,000 |  |  | $ 267,700,000 |
Taxes recoverable |  |  |  | $ 60,000,000 | 41,100,000 |
Fair value of taxes recoverable |  |  |  |  | $ 0.0 |
Increase in tax advances accrued | $ 17,000,000 |  |  |  |  |
Other environment related contingent liability [member] | Water Quality Review [Member] | Pascua-Lama [Member] |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |
Estimated financial effect of contingent liabilities |  | 0 |  |  |  |
Tax assessment and criminal charges [Member] | Veladero[Member] [Member] |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |
Estimated financial effect of contingent liabilities |  | $ 0 |  |  |  |

X
- Definition Adjustment to interest rate added to the base rate + References No definition available. + Details
Name: | abx_Adjustmenttointerestrate
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Compensation for denial of mining lease + References No definition available. + Details
Name: | abx_Compensationfordenialofmininglease
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of taxes recoverable + References No definition available. + Details
Name: | abx_Fairvalueoftaxesrecoverable
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Funds awarded for damages in relations to the claims + References No definition available. + Details
Name: | abx_Fundsawardedfordamages
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Increase in tax advances accrued + References No definition available. + Details
Name: | abx_Increaseintaxadvancesaccrued
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Initial upfront payment by way of assignment to the government + References No definition available. + Details
Name: | abx_Initialupfrontpayment
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest compounded on claims + References No definition available. + Details
Name: | abx_Interestcompoundedonclaims
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Payment to Resolve Outstanding Tax Claims + References No definition available. + Details
Name: | abx_PaymenttoResolveOutstandingTaxClaims
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percent of ownership by other parties in joint ventures + References No definition available. + Details
Name: | abx_Percentofownershipbyotherpartiesinjointventures
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax advances paid to the government + References No definition available. + Details
Name: | abx_Taxadvancespaidtothegovernment
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Tax claims related to foreign operations particularly from State of Mali before the Randgold merger + References No definition available. + Details
Name: | abx_Taxclaimsrelatedtoforeignoperations
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Taxes recoverable + References No definition available. + Details
Name: | abx_Taxesrecoverable
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_DisclosureOfContingentLiabilitiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the estimated financial effect of possible assets that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within control of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 89 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_89&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_EstimatedFinancialEffectOfContingentAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 86 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_86_a&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_EstimatedFinancialEffectOfContingentLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_17_b_iii&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_16_b_iii&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_21_a_iv&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_JointVenturesAxis=abx_TethyanCopperCompanyPtyLimitedMember
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_AcaciaMiningPLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_ML
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfContingentLiabilitiesAxis=ifrs-full_OtherEnvironmentRelatedContingentLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ItemsOfContingentLiabilitiesAxis=abx_WaterQualityReviewMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_ClassesOfContingentLiabilitiesAxis=abx_TaxassessmentandcriminalchargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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