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v3.20.4

Consolidated Statements of Cash Flow (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Statement of cash flows [abstract] |  |
Income taxes payable settled against VAT receivables | $ 203 | $ 115

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- Definition Income taxes payable settled against VAT receivables + References No definition available. + Details
Name: | abx_IncomeTaxesPayableSettledAgainstVATReceivables
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_StatementOfCashFlowsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration