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v3.21.1

Bank loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Bank loans |  |  |
Beginning balance | $ 55,000 | $ 95,000 | $ 95,000
New loans | 18,019 | 55,000 | 95,000
Payments | (7,197) | (95,000) | (95,000)
Exchange difference | (29) | 0 | 0
Final balance | $ 65,793 | $ 55,000 | $ 95,000

X
- Definition Represents the proceedings from new loans. + References No definition available. + Details
Name: | bvn_AdditionsForBorrowings
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of disbursements. + References No definition available. + Details
Name: | bvn_DisbursementsOfBorrowings
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Represents the amount of exchange differences pertaining to borrowings. + References No definition available. + Details
Name: | bvn_ExchangeDifferenceOfBorrowings
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of current loans received and the current portion of non-current loans received. [Refer: Loans received] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant