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Trade and other receivables, net - Allowance for expected credit losses (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Trade and other receivables, net |
Opening balance | $ 10,006
Ending balance | 9,717
Minera Yanacocha SRL and subsidiary [Member] |
Trade and other receivables, net |
Opening balance | 1,384
Additions/Deductions | 0
Ending balance | $ 1,384

X
- Definition Amount of allowance of receivables classified as other receivables. + References No definition available. + Details
Name: | bvn_AllowanceForDoubtfulOtherReceivables
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of deductions in allowance for doubtful accounts provided during the year. + References No definition available. + Details
Name: | bvn_DeductionsOfAllowanceForDoubtfulOtherReceivables
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Trade and other receivables, net + References No definition available. + Details
Name: | bvn_DisclosureOfTradeAndOtherReceivablesNetLineItems
Namespace Prefix: | bvn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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