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Trade and other receivables, net - Allowance for expected credit losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2017
Trade and other receivables, net
Opening balance	$ 10,089
Ending balance	10,006	$ 9,361
Minera Yanacocha SRL and subsidiary [Member]
Trade and other receivables, net
Opening balance	1,384	1,407
Deductions	0	(23)
Ending balance	$ 1,384	$ 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: