XML 61 R38.htm IDEA: XBRL DOCUMENT
v3.20.2

SEGMENT INFORMATION SEGMENT INFORMATION (Narrative) (Details) | Jun. 30, 2019 investment minesite
--- | ---
Operating segments [member] |
Disclosure of operating segments [line items] |
Number of Minesite Locations | 9
Consolidated total [Member] |
Disclosure of operating segments [line items] |
Number of Minesite Locations | 18
Number of Investments | investment | 1

X
- Definition Number of investments + References No definition available. + Details
Name: | abx_NumberofInvestments
Namespace Prefix: | abx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of minesite locations + References No definition available. + Details
Name: | abx_NumberofMinesiteLocations
Namespace Prefix: | abx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfOperatingSegmentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=abx_ConsolidatedtotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |