XML 229 R204.htm IDEA: XBRL DOCUMENT
v3.21.1

Tax situation - Additional information (Details) |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 05, 2021 installment | Jan. 01, 2017 | Jan. 01, 2004 | Jul. 17, 2012 | Sep. 28, 2011 | Dec. 31, 2020 PEN (S/) installment | Dec. 31, 2020 USD ($) installment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2020 USD ($) | Dec. 31, 2019 PEN (S/) | Dec. 31, 2019 USD ($)
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Refunds provision |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,700,000 |  |
Applicable tax rate |  |  | 29.50% |  |  |  | 32.00% | 32.00% | 32.00% | 32.00% |  |  |  |  |  |  |
Income Tax Rate Applicable To Dividends |  |  |  |  |  |  | 5.00% | 5.00% |  |  |  |  |  |  |  |  |
Applicable Tax Rate With Respect To Results Obtained |  |  |  |  |  |  |  |  |  |  |  | 6.80% | 6.80% | 4.10% |  |  |
Unused tax losses for which no deferred tax asset recognised |  |  |  |  |  |  | S/ 2,469,226,000 |  |  |  |  |  |  |  | 681,354,000 | S/ 1,950,896,000 | $ 588,151,000
Mining royalties. |  |  |  |  |  |  |  | $ 11,749,000 | $ 12,832,000 | $ 21,388,000 |  |  |  |  |  |  |
Term of agreement of guarantees and measures to promote investments |  |  |  |  | 15 years |  |  |  |  |  |  |  |  |  |  |  |
Current tax expense (income) |  |  |  |  |  |  |  | 9,924,000 | 11,911,000 | 16,882,000 |  |  |  |  |  |  |
Current tax expense income relating to special mining tax |  |  |  |  |  |  |  |  | 18,600,000 |  |  |  |  |  |  |  |
Current tax expense income relating to mining royalties |  |  |  |  |  |  |  | 17,300,000 | 28,400,000 |  |  |  |  |  |  |  |
Current tax expense income relating to statutory retirement fund |  |  |  |  |  |  |  | 2,600,000 | 1,800,000 |  |  |  |  |  |  |  |
Deferred tax expense (income) |  |  |  |  |  |  |  | 15,506,000 | (37,501,000) | 9,997,000 |  |  |  |  |  |  |
Tax expense (income), continuing operations |  |  |  |  |  |  |  | $ 25,430,000 | $ (25,590,000) | $ 26,879,000 |  |  |  |  |  |  |
Construction work in progress (as a percent) |  |  |  |  |  |  | 80.00% | 80.00% |  |  |  |  |  |  |  |  |
Deductible temporary differences for which no deferred tax asset is recognised |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000,000 |  |
Data processing equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation rate |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |  |  |  |  |  |
Machinery and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation rate |  |  |  |  |  |  | 20.00% | 20.00% |  |  |  |  |  |  |  |  |
Land transport vehicle |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation rate |  |  |  |  |  |  | 33.30% | 33.30% |  |  |  |  |  |  |  |  |
Hybrid or electric land transport vehicle |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation rate |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |  |  |  |  |  |
SUNAT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Equal Monthly Payments | installment |  | 66 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in tax rates or tax laws enacted or announced [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable Tax Rate With Respect To Results Obtained |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |
Minera Yanacocha SRL and subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable tax rate |  |  | 29.50% |  |  |  | 29.50% | 29.50% | 29.50% | 29.50% |  |  |  |  |  |  |
Maximum mining tax rate on operating profit |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |
Mining royalties included in cost of production |  |  |  |  |  |  |  | $ 6,167,000 | $ 7,360,000 | $ 1,273,000 |  |  |  |  |  |  |
Mining tax expense |  |  |  |  |  |  |  | $ 5,065,000 | 9,702,000 | 592,000 |  |  |  |  |  |  |
Employers contribution rate |  |  |  |  |  |  | 0.50% | 0.50% |  |  |  |  |  |  |  |  |
Employees Contribution Rate |  |  |  |  |  |  | 0.50% | 0.50% |  |  |  |  |  |  |  |  |
Current Income Tax Payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39,604,000 |  |
Mining Tax Payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,425,000 |  | 2,877,000
Income and mining tax expense |  |  |  |  |  |  |  | $ 868,000 | 728,000 | 39,000 |  |  |  |  |  |  |
Term of agreement of guarantees and measures to promote investments |  |  |  |  |  |  | 15 years | 15 years |  |  |  |  |  |  |  |  |
Mining royalties payable |  |  |  |  |  |  |  |  |  | 0 | $ 0 |  |  |  | 55,000 |  | 1,563,000
Current tax expense (income) |  |  |  |  |  |  |  | $ 53,018,000 | 64,928,000 | 30,368,000 |  |  |  |  |  |  |
Deferred tax expense (income) |  |  |  |  |  |  |  | 0 | 0 | (1,071,000) |  |  |  |  |  |  |
Tax expense (income), continuing operations |  |  |  |  |  |  |  | $ 53,018,000 | $ 64,928,000 | $ 29,297,000 |  |  |  |  |  |  |
Tax rate effect from change in tax rate |  |  |  |  |  |  | 29.00% | 29.00% |  |  |  |  |  |  |  |  |
Sociedad Minera Cerro Verde S.A.A. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable tax rate |  |  |  |  |  |  | 32.00% | 32.00% | 32.00% | 32.00% |  |  |  |  |  |  |
Deferred tax expense (income) recognised in profit or loss |  |  |  |  |  |  |  | $ 26,300,000 | $ 141,600,000 | $ 62,200,000 |  |  |  |  |  |  |
Amount Paid For Disputed Tax Assessments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 432,700,000 |  | 432,700,000
Other non-current receivables | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  | 190,501,000 |  | 186,626,000
Current tax expense (income) |  |  |  |  |  |  |  | 236,926,000 | (298,074,000) | 325,170,000 |  |  |  |  |  |  |
Current tax expense income relating to special mining tax |  |  |  |  |  |  |  |  |  | (28,200,000) |  |  |  |  |  |  |
Current tax expense income relating to mining royalties |  |  |  |  |  |  |  |  |  | 34,900,000 |  |  |  |  |  |  |
Current tax expense income relating to statutory retirement fund |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |
Deferred tax expense (income) |  |  |  |  |  |  |  | 25,962,000 | 139,934,000 | 61,483,000 |  |  |  |  |  |  |
Tax expense (income), continuing operations |  |  |  |  |  |  |  | 236,926,000 | 298,074,000 | 325,170,000 |  |  |  |  |  |  |
Current income tax expense |  |  |  |  |  |  |  | $ 210,600,000 | $ 156,500,000 | 263,000,000 |  |  |  |  |  |  |
Sociedad Minera Cerro Verde S.A.A. [Member] | December 2006 to December 2013 | SUNAT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax payment based on exchange rates |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 435,200,000 |  |
Tax payment based on estimated due |  |  |  |  |  |  | S/ 1,600,000 |  |  |  |  |  |  |  | 476,700,000 |  |
Number Of Equal Monthly Payments | installment |  |  |  |  |  |  | 66 | 66 |  |  |  |  |  |  |  |  |
Deferred Interest, Interest And Penalties |  |  |  |  |  |  |  | $ 496,500,000 |  |  |  |  |  |  |  |  |
Amount of the assessment, including interest and penalties |  |  |  |  |  |  | S/ 2,800,000,000 | $ 771,200,000 |  |  |  |  |  |  |  |  |
Minera Yanacocha SRL One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional income and mining tax expense |  |  |  |  |  |  |  |  |  | $ 8,230,000 | $ 3,526,000 |  |  |  |  |  |
Current Income Tax Payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,276,000
Peruvian government [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable tax rate |  |  |  |  |  |  | 32.00% | 32.00% |  |  |  |  |  |  |  |  |
Peruvian government [member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate on revenue |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |
IFRS Standby Letters of Credit [Member] | Sociedad Minera Cerro Verde S.A.A. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  | S/ 1,370,300,000 |  |  |  |  |  |  |  | $ 378,100,000 | S/ 1,643,900,000 | $ 495,600,000
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate on revenue |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Minera Yanacocha SRL and subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mining tax rate on operating profit |  |  |  |  |  |  | 2.00% | 2.00% |  |  |  |  |  |  |  |  |
Minimum | Minera Yanacocha SRL and subsidiary [Member] | Special Mining Burden [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mining tax rate on operating profit |  |  |  |  |  |  | 4.00% | 4.00% |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate on revenue |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Minera Yanacocha SRL and subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mining tax rate on operating profit |  |  |  |  |  |  | 8.40% | 8.40% |  |  |  |  |  |  |  |  |
Maximum | Minera Yanacocha SRL and subsidiary [Member] | Special Mining Burden [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mining tax rate on operating profit |  |  |  |  |  |  | 13.12% | 13.12% |  |  |  |  |  |  |  |  |
[1] | Represents disbursements made under protest by the Company in connection with disputed tax assessments related to reviews by SUNAT (Superintendencia Nacional de Administración Tributaria) from the years 2003 to 2012 (see Note 13(c) and 13(e)). According to current tax procedures and the timeframe for resolving these types of claims, management and its legal advisors expect resolution of this matter will be favorable to the Company and amounts will be recoverable.

X
- Definition The amount of additional income and mining tax expense arised from the operations at Cerro Yanacocha and La Quinua + References No definition available. + Details
Name: | bvn_AdditionalIncomeAndMiningTaxExpense
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of assessment including interest and penalties on default tax. + References No definition available. + Details
Name: | bvn_AmountOfAssessmentIncludingInterestAndPenalties
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount disputed tax assessments paid. + References No definition available. + Details
Name: | bvn_AmountPaidForDisputedTaxAssessments
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The applicable tax rate with respect to results obtained. + References No definition available. + Details
Name: | bvn_ApplicableTaxRateWithRespectToResultsObtained
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of current income tax expense for royalties, mining tax and SRF. + References No definition available. + Details
Name: | bvn_CurrentIncomeTaxExpenseForRoyaltiesMinimgTaxAndSrf
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of income tax payable. + References No definition available. + Details
Name: | bvn_CurrentIncomeTaxPayable
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current tax expense (income) relating to mining royalties. + References No definition available. + Details
Name: | bvn_CurrentTaxExpenseIncomeRelatingToMiningRoyalties
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of current tax expense (income) relating to special mining tax. + References No definition available. + Details
Name: | bvn_CurrentTaxExpenseIncomeRelatingToSpecialMiningTax
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of current tax expense (income) relating to statutory retirement fund. + References No definition available. + Details
Name: | bvn_CurrentTaxExpenseIncomeRelatingToStatutoryRetirementFund
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deferred interest, interest and penalties. + References No definition available. + Details
Name: | bvn_DeferredInterestInterestAndPenalties
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The rate of employees contribution to supplementary fund relates to metallurgical and steel workers applied on the monthly gross salary. + References No definition available. + Details
Name: | bvn_EmployeesContributionRate
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The rate of employers contribution to supplementary fund relates to metallurgical and steel workers applied on the annual income before taxes. + References No definition available. + Details
Name: | bvn_EmployersContributionRate
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of income and mining tax expense. + References No definition available. + Details
Name: | bvn_IncomeAndMiningTaxExpense
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The income tax rate applicable to dividends. + References No definition available. + Details
Name: | bvn_IncomeTaxRateApplicableToDividends
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum percentage of mining tax rate to be calculated based on level of operating profit. + References No definition available. + Details
Name: | bvn_MaximumMiningTaxRateOnOperatingProfit
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Royalty expense incurred and are directly related to goods produced and sold and services rendered during the reporting period. + References No definition available. + Details
Name: | bvn_MiningRoyalties
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of mining royalties included in cost of production. + References No definition available. + Details
Name: | bvn_MiningRoyaltiesIncludedInCostOfProduction
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of mining royalty payable. + References No definition available. + Details
Name: | bvn_MiningRoyaltiesPayable
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of mining tax expense. + References No definition available. + Details
Name: | bvn_MiningTaxExpense
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of mining tax payable. + References No definition available. + Details
Name: | bvn_MiningTaxPayable
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of mining tax rate applied on operating profit to be payable on a quarterly basis. + References No definition available. + Details
Name: | bvn_MiningTaxRateOnOperatingProfit
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents number of equal monthly payments. + References No definition available. + Details
Name: | bvn_NumberOfEqualMonthlyPayments
Namespace Prefix: | bvn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of construction work in progress. + References No definition available. + Details
Name: | bvn_PercentageOfConstructionWorkInProgress
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of royalty payable based on quarterly net sales and operating profit. + References No definition available. + Details
Name: | bvn_RoyaltyRateOnRevenue
Namespace Prefix: | bvn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of tax payment based on estimated due. + References No definition available. + Details
Name: | bvn_TaxPaymentBasedOnEstimatedDue
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of tax payment based on exchange rates. + References No definition available. + Details
Name: | bvn_TaxPaymentBasedOnExchangeRates
Namespace Prefix: | bvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The term of agreement of guarantees and measures to promote investments. + References No definition available. + Details
Name: | bvn_TermOfAgreementOfGuaranteesAndMeasuresToPromoteInvestments
Namespace Prefix: | bvn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ApplicableTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 80 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_80_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_CurrentTaxExpenseIncome
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph g -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_g_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DeferredTaxExpenseIncome
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph g -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_g_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The depreciation rate used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DepreciationRatePropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2020-01-01 -Paragraph 35 -Subparagraph b -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2020-en-r&anchor=para_35_b_viii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2020-01-01 -Paragraph 23 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_23_h&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 79 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_79&doctype=Standard -URIDate 2020-01-01 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2020-01-01 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 82 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_82_d&doctype=Standard -URIDate 2020-01-01 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2020-01-01 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B13 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
Name: | ifrs-full_IncomeTaxExpenseContinuingOperations
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + 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_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of non-current other receivables. [Refer: Other receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherNoncurrentReceivables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of provision for refunds to be made by the entity to its customers. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Section Example 4 Refunds policy -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex4_TI -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 87 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_87&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RefundsProvision
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from a change in tax rate. [Refer: Average effective tax rate; Applicable tax rate] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_TaxRateEffectFromChangeInTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_CommunicationAndNetworkEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_MachineryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=bvn_LandTransportVehicleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=bvn_HybridOrElectricLandTransportVehicleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bvn_IfrsIncomeTaxAuthorityNameAxis=bvn_CustomsAndTaxationOrganizationPeruMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=ifrs-full_ChangesInTaxRatesOrTaxLawsEnactedOrAnnouncedMember
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_SociedadMineraCerroVerdeSaaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bvn_IfrsTaxPeriodAxis=bvn_December2006ToDecember2013Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bvn_InvestmentsInAssociatesAxis=bvn_MineraYanacochaSrlOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=bvn_PeruvianGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=bvn_IfrsStandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | bvn_ClassesOFminingTaxRatesAxis=bvn_SpecialMiningBurdenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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