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v3.20.1

ACCOUNTS PAYABLE (Tables) | 12 Months Ended
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Dec. 31, 2019
Subclassifications of assets, liabilities and equities [abstract] |
Accounts payable |
| As at December 31, 2019 |  | As at December 31, 2018 |
Accounts payable |  | $715 |  |  | $744 |
Accruals | 440 |  | 357 |
|  | $1,155 |  |  | $1,101 |

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- Definition Disclosure of detailed information about current trades payable [Table Text Block] + References No definition available. + Details
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Namespace Prefix: | abx_
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Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | ifrs-full_
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