XML 200 R175.htm IDEA: XBRL DOCUMENT
v3.21.1

Provisions, contingent liabilities and other liabilities - Provision classification (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Classification by maturity [Abstract] |  |  |  |
Current provisions | $ 68,000 | $ 72,771 |  |
Non-current Portion | 252,338 | 221,736 |  |
Provision for remediation and mine closure [Member] |  |  |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 237,543 | 195,900 | $ 131,888 |
Classification by maturity [Abstract] |  |  |  |
Non-current portion | 237,543 | 195,900 | 131,888 |
Minera Yanacocha SRL and subsidiary [Member] |  |  |  |
Provisions and contingent liabilities |  |  |  |
Provision for closure of mining units and exploration projects | 1,738,428 | 1,608,380 | 1,294,464 | $ 1,234,731
Provision for social responsibility | 16,609 | 18,326 | $ 18,010 | $ 21,689
Accrual of operating costs | 15,938 | 11,238 |  |
Workers' profit sharing payable | 17,311 | 12,793 |  |
Provisions for Accruals Of Capital Expenditures | 20,147 | 8,139 |  |
Total | 7,352 | 6,162 |  |
Provisions | 1,762,389 | 1,632,868 |  |
Provisions, Other Accruals And Liabilities | 1,762,389 | 1,632,868 |  |
Provisions for Accruals Of Capital Expenditures | 20,147 | 8,139 |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 1,660,603 | 1,587,551 |  |
Classification by maturity [Abstract] |  |  |  |
Current provisions | 101,786 | 45,317 |  |
Provisions | 1,762,389 | 1,632,868 |  |
Non-current portion | 1,660,603 | 1,587,551 |  |
Total | 7,352 | 6,162 |  |
Sociedad Minera Cerro Verde Saa [Member] |  |  |  |
Current provisions [abstract] |  |  |  |
Other current provisions | 9,625 | 7,918 |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 307,974 | 278,419 |  |
Classification by maturity [Abstract] |  |  |  |
Current portion | 9,625 | 7,918 |  |
Non-current portion | 307,974 | 278,419 |  |
Sociedad Minera Cerro Verde Saa [Member] | Provision for social commitments [Member] |  |  |  |
Current provisions [abstract] |  |  |  |
Other current provisions | 9,469 | 7,677 |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 1,226 | 3,046 |  |
Classification by maturity [Abstract] |  |  |  |
Current portion | 9,469 | 7,677 |  |
Non-current portion | 1,226 | 3,046 |  |
Sociedad Minera Cerro Verde Saa [Member] | Provision for remediation and mine closure [Member] |  |  |  |
Current provisions [abstract] |  |  |  |
Other current provisions | 156 | 241 |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 237,387 | 195,659 |  |
Classification by maturity [Abstract] |  |  |  |
Current portion | 156 | 241 |  |
Non-current portion | 237,387 | 195,659 |  |
Sociedad Minera Cerro Verde Saa [Member] | Provision for disputed mining royalties (c ) |  |  |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 44,982 | 62,797 |  |
Classification by maturity [Abstract] |  |  |  |
Non-current portion | 44,982 | 62,797 |  |
Sociedad Minera Cerro Verde Saa [Member] | Provision for legal contingencies [member] |  |  |  |
Non-current provisions [abstract] |  |  |  |
Other non-current provisions | 1,924 | 4,800 |  |
Classification by maturity [Abstract] |  |  |  |
Non-current portion | 1,924 | 4,800 |  |
Sociedad Minera Cerro Verde Saa [Member] | Miscellaneous other provisions [member] |  |  |  |
Classification by maturity [Abstract] |  |  |  |
Non-current Portion | $ 22,455 | $ 12,117 |  |

X
- References No definition available. + Details
Name: | bvn_ClassificationByMaturityAbstract
Namespace Prefix: | bvn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Provisions and contingent liabilities + References No definition available. + Details
Name: | bvn_DisclosureOfProvisionsLineItems
Namespace Prefix: | bvn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of provision made for accrual of operating costs. + References No definition available. + Details
Name: | bvn_ProvisionForAccrualOfOperatingCosts
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provision made for closure of mining units and exploration projects. + References No definition available. + Details
Name: | bvn_ProvisionForClosureOfMiningUnitsAndExplorationProjects
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of provision for social responsibility. + References No definition available. + Details
Name: | bvn_ProvisionForSocialResponsibility
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount liabilities of provision and contingent liabilities + References No definition available. + Details
Name: | bvn_ProvisionsAndContingentLiabilities
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provision made for accrual of Capital Expenditures. + References No definition available. + Details
Name: | bvn_ProvisionsForAccrualsOfCapitalExpenditures
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of Provisions, Other Accruals And Liabilities. + References No definition available. + Details
Name: | bvn_ProvisionsOtherAccrualsAndLiabilities
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_CurrentProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Definition The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherLongtermProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_a&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherShorttermProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities of uncertain timing or amount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_Provisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ProvisionsForEmployeeBenefits
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bvn_ProvisionForRemediationAndMineClosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=bvn_MineraYanacochaSrlAndSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=bvn_SociedadsMinerasCerroVerdeSaaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bvn_ProvisionForSocialCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bvn_ProvisionForDisputedMiningRoyaltiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_LegalProceedingsProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_MiscellaneousOtherProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |