XML 159 R134.htm IDEA: XBRL DOCUMENT
v3.21.1

Inventories, net - Allowance for obsolescence of material and supplies (Details) - Minera Yanacocha SRL and subsidiary [Member] - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Inventory, net |  |  |
Opening balance | $ 6,098 | $ 7,515 | $ 7,076
Provision for impairment of materials and supplies | 1,459 | 1,898 | 1,887
Reversal of provision for impairment of materials and supplies | (962) | (3,315) | (1,448)
Ending balance | $ 6,595 | $ 6,098 | $ 7,515

X
- Definition The amount of allowance for obsolescence of materials and supplies. + References No definition available. + Details
Name: | bvn_AllowancesForObsolescenceOfMaterialsAndSupplies
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Inventory, net + References No definition available. + Details
Name: | bvn_DisclosureOfInventoryNetLineItems
Namespace Prefix: | bvn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of provision for impairment of materials and supplies made during the year. + References No definition available. + Details
Name: | bvn_ProvisionForImpairmentOfMaterialsAndSupplies
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reversal of provision for impairment of materials and supplies. + References No definition available. + Details
Name: | bvn_ReversalOfProvisionForImpairmentOfMaterialsAndSupplies
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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