XML 136 R66.htm IDEA: XBRL DOCUMENT
v3.20.4

IMPAIRMENT AND REVERSAL OF NON-CURRENT ASSETS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Impairment Of Assets [Abstract] |
Summary of impairments (reversals) [Text Block] | For the year ended December 31, 2020, we recorded net impairment reversals of $269 million (2019: net impairment reversals of $1,423 million) for non-current assets, as summarized in the following table:
For the years ended December 31 | 2020 | 2019
Tanzania | ($304) |  | $— |
Cortez | 10 |  | 57 |
Pueblo Viejo | 5 |  | (865) |
Lumwana | — |  | (947) |
Pascua-Lama | — |  | 296 |
Lagunas Norte | — |  | 12 |
Golden Sunlight | — |  | 9 |
Veladero | — |  | 3 |
Intangible assets | 12 |  | — |
Other | 8 |  | 12 |
Total impairment (reversals) losses of long-lived assets | ($269) |  | ($1,423) |
Impairment testing assumptions [Text Block] | The other key assumptions used in our impairment testing, based on the CGUs tested in each year, are summarized in the table below:
| 2020 | 2019
Copper price per lb (long-term) | $3.00 | $3.00
WACC - gold (range) | 3%-12% | 3%-7%
WACC - gold (avg) | 5 | % | 4 | %
WACC - copper | n/a | n/a
NAV multiple - gold (avg) | 1.3 | 1.2
LOM years - gold (avg) | 20 | 19
Carrying value of CGU's [Text Block] | The carrying value of the CGUs that are most sensitive to changes in the key assumptions used in the FVLCD calculation are:
As at December 31, 2020 | Carrying Value
Loulo-Gounkoto | $4,187 |
Veladero | 779 |

X
- Definition Carrying value of CGU's + References No definition available. + Details
Name: | abx_CarryingValueOfCGUsTextBlock
Namespace Prefix: | abx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Impairment Of Assets [Abstract] + References No definition available. + Details
Name: | abx_ImpairmentOfAssetsAbstract
Namespace Prefix: | abx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Impairment testing assumptions + References No definition available. + Details
Name: | abx_ImpairmentTestingAssumptionsTextBlock
Namespace Prefix: | abx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary of impairments (reversals) + References No definition available. + Details
Name: | abx_SummaryOfImpairmentsReversalsTextBlock
Namespace Prefix: | abx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration