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ACCOUNTS PAYABLE (Tables) | 12 Months Ended
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Dec. 31, 2021
Trade and other payables [abstract] |
Schedule of accounts payable |
| As at December 31, 2021 | As at December 31, 2020
Accounts payable | $539 |  | $929 |
Accruals | 909 |  | 529 |
| $1,448 |  | $1,458 |

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- Definition Disclosure of detailed information about current trades payable [Table Text Block] + References No definition available. + Details
Name: | abx_DisclosureOfDetailedInformationAboutCurrentTradesPayableTableTextBlock
Namespace Prefix: | abx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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