XML 193 R116.htm IDEA: XBRL DOCUMENT
v3.22.0.1

IMPAIRMENT AND REVERSAL OF NON-CURRENT ASSETS - Narrative (Details) $ in Millions |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jun. 01, 2021 USD ($) | Mar. 31, 2021 USD ($) | Apr. 25, 2020 | Jan. 01, 2020 | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) numberOfIndicators | Mar. 31, 2020 USD ($) $ / ounce | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |  |  |  |  |  |  |  |  | $ (238)
Porgera [Member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Proportion of interest held by shareholders |  |  |  |  |  |  |  | 95.00% |
Proportion of ownership in joint operation |  |  | 47.50% |  |  |  |  | 47.50% |
Recoverable amount |  |  |  |  |  | $ 297 |  | $ 299 | 297
Veladero [Member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Proportion of ownership in joint operation |  |  |  |  |  |  |  | 50.00% |
Indicators of impairment loss | numberOfIndicators |  |  |  |  |  | 1 |  |  |
Indicators of impairment reversal | numberOfIndicators |  |  |  |  |  | 0 |  |  |
Lagunas Norte [Member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Percentage of ownership interest sold | 100.00% |  |  |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  | $ (86) |  |  |  |
Lagunas Norte [Member] | Maximum |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Consideration paid (received) | $ (81) |  |  |  |  |  |  |  |
Lagunas Norte [Member] | At fair value |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Consideration paid (received) |  | $ (63) |  |  |  |  |  |  |
Tanzanian Mines [Member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Proportion of ownership interests held by non-controlling interests |  |  |  | 16.00% |  |  |  |  |
Reversal of impairment loss recognised in profit or loss |  |  |  |  |  |  |  |  | $ 304
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |  |  |  |  |  |  | $ 238 |  |
Loss (gain) on assignment of shareholder loans |  |  |  |  |  |  | $ 167 |  |
Tanzanian Mines [Member] | Minimum |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
NAV multiple |  |  |  |  |  |  | 1.1 |  |
Weighted average cost of capital, significant unobservable inputs, assets |  |  |  |  |  |  | 5.40% |  |
Tanzanian Mines [Member] | Maximum |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
NAV multiple |  |  |  |  |  |  | 1.3 |  |
Weighted average cost of capital, significant unobservable inputs, assets |  |  |  |  |  |  | 6.20% |  |
Tanzanian Mines [Member] | Long-term [Member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Mineral price (gold, in dollars per ounce; copper, in dollars per pound) | $ / ounce |  |  |  |  |  |  | 1,300 |  |
Tanzanian Mines [Member] | Short-term [Member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Mineral price (gold, in dollars per ounce; copper, in dollars per pound) | $ / ounce |  |  |  |  |  |  | 1,350 |  |
Bulyanhulu [Member] | Individual assets or cash-generating units [member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Recoverable amount |  |  |  |  |  |  | $ 1,237 |  |
Reversal of impairment loss recognised in profit or loss |  |  |  |  |  |  | 663 |  |
North Mara [Member] | Individual assets or cash-generating units [member] |  |  |  |  |  |  |  |  |
Impairment and reversal of non-current assets |  |  |  |  |  |  |  |  |
Recoverable amount |  |  |  |  |  |  | 967 |  |
Reversal of impairment loss recognised in profit or loss |  |  |  |  |  |  | $ 46 |  |

X
- Definition Estimated mineral price for measurement of fair value less costs of disposal + References No definition available. + Details
Name: | abx_EstimatedMineralPriceForMeasurementOfFairValueLessCostsOfDisposal
Namespace Prefix: | abx_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indicators of impairment loss + References No definition available. + Details
Name: | abx_IndicatorsOfImpairmentLoss
Namespace Prefix: | abx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indicators of impairment reversal + References No definition available. + Details
Name: | abx_IndicatorsOfImpairmentReversal
Namespace Prefix: | abx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss (gain) on assignment of shareholder loans + References No definition available. + Details
Name: | abx_LossGainOnAssignmentOfShareholderLoans
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net asset value multiple used in current measurement of fair value less costs of disposal + References No definition available. + Details
Name: | abx_NetAssetValueMultipleUsedInCurrentMeasurementOfFairValueLessCostsOfDisposal
Namespace Prefix: | abx_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of ownership interest sold + References No definition available. + Details
Name: | abx_PercentageOfOwnershipInterestSold
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proportion of interest held by shareholders + References No definition available. + Details
Name: | abx_Proportionofinterestheldbyshareholders
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average cost of capital used as a significant Level 3 unobservable input for assets. [Refer: Level 3 of fair value hierarchy [member]] + References No definition available. + Details
Name: | abx_WeightedAverageCostOfCapitalSignificantUnobservableInputsAssets
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 40 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_40_a&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ConsiderationPaidReceived
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition The increase (decrease) in equity through changes in ownership interests in subsidiaries that do not result in loss of control. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 106 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d_iii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 2021-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2021-03-24 + 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 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 2021-01-01 -Paragraph 12 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_12_c&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The higher of an asset’s (or cash-generating unit’s) fair value less costs of disposal and its value in use. [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 130 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_130_e&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount recognised as an increase of the carrying amount of an asset or cash-generating unit to its recoverable amount when an impairment loss had been previously recognised. [Refer: Impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 130 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_130_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 130 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ReversalOfImpairmentLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of reversal of impairment loss recognised in profit or loss. [Refer: Reversal of impairment loss; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 126 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_126_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 129 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_129_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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

X
- Details
Name: | ifrs-full_SegmentsAxis=abx_LagunasNorteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=ifrs-full_AtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=abx_LongTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=abx_ShortTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=ifrs-full_IndividualAssetsOrCashgeneratingUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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