XML 160 R79.htm IDEA: XBRL DOCUMENT
v3.20.4

SIGNIFICANT ACCOUNTING POLICIES - Joint Arrangements and Entities Other Than 100% Owned Barrick Subsidiaries (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 01, 2020 | Dec. 31, 2019 | Jun. 30, 2020 | Dec. 31, 2019 | Sep. 16, 2019 | Dec. 31, 2020
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 100.00%
Proportion of ownership interests held by non-controlling interests | 16.00% |  |  |  |  |
Joint ventures |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Contractual obligation |  |  |  |  |  | $ 653
Turquoise Ridge |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint venture |  |  | 75.00% |  |  |
Kibali [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint venture |  |  |  |  |  | 45.00%
Jabal Sayid |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint venture |  |  |  |  |  | 50.00%
Zaldívar |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint venture |  |  |  |  |  | 50.00%
Tanzanian Mines [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% |  |  | 63.90% | 84.00%
Norte Abierto Project |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint operation |  |  |  |  |  | 50.00%
Donlin Gold Project |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint operation |  |  |  |  |  | 50.00%
Porgera Mine |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint operation |  |  |  |  |  | 47.50%
Turquoise Ridge |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint operation |  |  | 75.00% |  |  |
Veladero |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint operation |  |  |  |  |  | 50.00%
Nevada Gold Mines |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 61.50%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 38.50%
North Mara [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 84.00%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 16.00%
Bulyanhulu [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 84.00%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 16.00%
Buzwagi [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 84.00%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 16.00%
Carlin |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  | 61.50% |  |
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 38.50%
Cortez |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  | 61.50% |  |
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 38.50%
Turquoise Ridge |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 61.50%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 38.50%
Phoenix |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 38.50%
Long Canyon |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 38.50%
Loulo Gounkoto |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 80.00%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 20.00%
Tongon |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 89.70%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 10.30%
Pueblo Viejo |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 60.00%
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 40.00%
South Arturo |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  | 60.00% | 36.90% |  |
Phoenix and Long Canyon [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 61.50%
Newmont [Member] | Turquoise Ridge |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Economic interest in joint venture |  |  | 25.00% |  |  |
Government of Tanzania |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 16.00%
Government of Tanzania | Tanzanian Mines [Member] |  |  |  |  |  |
Disclosure of Joint Arrangements and Subsidiaries [Line Items] |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  |  |  |  | 16.00%

X
- Definition Contractual obligation1 + References No definition available. + Details
Name: | abx_ContractualObligation1
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition [Line Items] for Disclosure of joint arrangements and subsidiaries [Table] + References No definition available. + Details
Name: | abx_DisclosureofJointArrangementsandSubsidiariesLineItems
Namespace Prefix: | abx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointOperation
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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 2019-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2019-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2019-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2019-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph 19B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_19B_c&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInSubsidiary
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph 12 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_12_c&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

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

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

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

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

X
- Details
Name: | ifrs-full_JointOperationsAxis=abx_PorgeraMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=abx_TurquoiseRidgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=abx_VeladeroXMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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

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

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

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

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

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

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

X
- Details
Name: | ifrs-full_CounterpartiesAxis=abx_NewmontMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=abx_GovernmentofTanzaniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |