XML 142 R82.htm IDEA: XBRL DOCUMENT
v3.19.1

SIGNIFICANT ACCOUNTING POLICIES - Stock-Based Compensation (Details) - 12 months ended Dec. 31, 2018 | CAD ($) | USD ($)
--- | --- | ---
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Employee Share Purchase Plan, Employer Matching Contribution, Percent Match | 50.00% | 50.00%
Barrick Share Purchase Plan, Employer Matching Contribution, Percent Match | 100.00% | 100.00%
Stock options |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period | 4 years | 4 years
RSUs |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period | 3 years | 3 years
RSUs | Minimum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period | 2 years 6 months | 2 years 6 months
RSUs | Maximum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period | 3 years | 3 years
DSUs |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Minimum required annual retainer (as percent) | 75.00% | 75.00%
PRSUs |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period | 3 years | 3 years
PRSUs | Minimum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting percentage (as percent) | 0.00% | 0.00%
PRSUs | Maximum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting percentage (as percent) | 200.00% | 200.00%
PGSUs | Minimum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting percentage (as percent) | 100.00% | 100.00%
PGSUs | Maximum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting percentage (as percent) | 600.00% | 600.00%
ESPP | Minimum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Annual contributions per employee (as percent) | 1.00% | 1.00%
ESPP | Maximum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Annual contributions per employee (as percent) | 6.00% | 6.00%
BSPP | Minimum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Annual contributions per employee (as percent) | 1.00% | 1.00%
BSPP | Maximum |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Annual contributions per employee (as percent) | 10.00% | 10.00%
Canada, Dollars | ESPP |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Maximum employer contribution | $ 5,000 |
Canada, Dollars | BSPP |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Maximum employer contribution |  | $ 5,000
United States of America, Dollars | BSPP |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Maximum employer contribution |  | $ 4,000

X
- Definition Barrick Share Purchase Plan, Employer Matching Contribution, Percent Match + References No definition available. + Details
Name: | abx_BarrickSharePurchasePlanEmployerMatchingContributionPercentMatch
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Employee Share Purchase Plan, Employer Matching Contribution, Percent Match + References No definition available. + Details
Name: | abx_EmployeeSharePurchasePlanEmployerMatchingContributionPercentMatch
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based compensation arrangement by share-based payment award, minimum amount of required annual retainer available for election + References No definition available. + Details
Name: | abx_SharebasedCompensationArrangementbySharebasedPaymentAwardMinimumAmountofRequiredAnnualRetainerAvailableforElection
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based payment arrangement, annual contributions per employee, percent + References No definition available. + Details
Name: | abx_SharebasedPaymentArrangementAnnualContributionsPerEmployeePercent
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based payment arrangement, employer matching contribution, maximum amount of match + References No definition available. + Details
Name: | abx_SharebasedPaymentArrangementEmployerMatchingContributionMaximumAmountofMatch
Namespace Prefix: | abx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Vesting percentage for share-based payment arrangement + References No definition available. + Details
Name: | abx_VestingPercentageForSharebasedPaymentArrangement
Namespace Prefix: | abx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Vesting requirements for share-based Ppment arrangement + References No definition available. + Details
Name: | abx_VestingRequirementsForSharebasedPaymentArrangement
Namespace Prefix: | abx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_StockOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_RestrictedShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_DeferredShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_PerformanceRestrictedShareUnitsPRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_PerformanceGrantedShareUnitsPGSUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_EmployeeSharePurchasePlanESPPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=abx_BarrickSharePurchasePlanBSPPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | abx_ContributionLimitCurrencyAxis=currency_CAD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | abx_ContributionLimitCurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |