Name:	abx_ChangeInCopperPriceUsedInAssumptionsForSensitivityAnalysis
Namespace Prefix:	abx_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

Estimated change in gold price used in current assumptions for measurement of fair value less costs of disposal to perform a sensitivity analysis

No definition available.

Name:	abx_ChangeInGoldPriceUsedInAssumptionsForSensitivityAnalysis
Namespace Prefix:	abx_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

Estimated change in NAV multiple used in current assumptions for measurement of fair value less costs of disposal to perform a sensitivity analysis

No definition available.

Name:	abx_ChangeInNAVMultipleUsedInAssumptionsForSensitivityAnalysis
Namespace Prefix:	abx_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Change in weighted average cost of capital used in assumptions for sensitivity analysis

No definition available.

Name:	abx_ChangeInWeightedAverageCostOfCapitalUsedInAssumptionsForSensitivityAnalysis
Namespace Prefix:	abx_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Estimated impairment charge (reversal)

No definition available.

Name:	abx_EstimatedImpairmentChargeReversal
Namespace Prefix:	abx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Life of mine used in current measurement of fair value less costs of disposal

No definition available.

Name:	abx_LifeOfMineUsedInCurrentMeasurementOfFairValueLessCostsOfDisposal
Namespace Prefix:	abx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

value per ounce of gold

No definition available.

Name:	abx_ValuePerOunceOfGold
Namespace Prefix:	abx_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

Name:	ifrs-full_DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The discount rate used in the current measurement of fair value less costs of disposal.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2024-01-01
-Paragraph 130
-Subparagraph f
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_f_iii&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_DiscountRateUsedInCurrentMeasurementOfFairValueLessCostsOfDisposal
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B67
-Subparagraph d
-Clause v
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B
-URIDate 2024-03-27

Name:	ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

The higher of an asset’s (or cash-generating unit’s) fair value less costs of disposal and its value in use. [Refer: Total for all cash-generating units [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2024-01-01
-Paragraph 130
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_e&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	ifrs-full_ProductsAndServicesAxis=abx_CopperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_RangeAxis=ifrs-full_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ProductsAndServicesAxis=us-gaap_GoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_KibaliMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_LumwanaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_VeladeroMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_HemloMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	abx_WACCChangeAssumptionAxis=abx_A1IncreaseInWACCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	abx_WACCChangeAssumptionAxis=abx_A1DecreaseInWACCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	abx_PriceChangeAssumptionAxis=abx_A100DecreaseInGoldPriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	abx_PriceChangeAssumptionAxis=abx_A100IncreaseInGoldPriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	abx_ChangeInNAVMultipleAxis=abx_A01IncreaseInNAVMultipleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	abx_PriceChangeAssumptionAxis=abx_A025IncreaseInCopperPriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: