XML 318 R293.htm IDEA: XBRL DOCUMENT v3.21.1

Other accruals and liabilities - Additional information (Details) - Minera Yanacocha SRL and subsidiary [Member]	12 Months Ended
	Dec. 31, 2020
Disclosure Of Other Accruals And Liabilities [Line Items]
Employee's profit share on annual taxable income	8.00%
Number of days of work [Member]
Disclosure Of Other Accruals And Liabilities [Line Items]
Percentage of distribution	50.00%
Annual salary levels [Member]
Disclosure Of Other Accruals And Liabilities [Line Items]
Percentage of distribution	50.00%

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	bvn_DisclosureOfOtherAccrualsAndLiabilitiesLineItems
Namespace Prefix:	bvn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of share by the workers in annual taxable income.

+ References

No definition available.

+ Details

Name:	bvn_EmployeesProfitShareOnAnnualTaxableIncome
Namespace Prefix:	bvn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of distribution of contribution to employees under the plan.

+ References

No definition available.

+ Details

Name:	bvn_PercentageOfDistribution
Namespace Prefix:	bvn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	bvn_BasisOfDistributionAxis=bvn_NumberOfDaysOfWorkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bvn_BasisOfDistributionAxis=bvn_AnnualSalaryLevelsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: