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Identification and business activity - Summary of unabsorbed cost due to production stoppage (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Unabsorbed cost due to production stoppage
Unabsorbed cost due to production stoppage	$ 25,509	$ 27,758	$ 0
Depreciation and amortization incurred during the production stoppage		10,800
Services provided by third parties
Unabsorbed cost due to production stoppage
Unabsorbed cost due to production stoppage	19,374	8,580
Direct labor
Unabsorbed cost due to production stoppage
Unabsorbed cost due to production stoppage	$ 3,418	$ 11,075

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- Definition

Represents the amount of depreciation and amortization incurred during the production stoppage.

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No definition available.

+ Details

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Namespace Prefix:	bvn_
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Balance Type:	debit
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- Definition

Represents the amount of unabsorbed cost due to production stoppage.

+ References

No definition available.

+ Details

Name:	bvn_UnabsorbedCostDueToProductionStoppage
Namespace Prefix:	bvn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

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

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- Details

Name:	bvn_ExpensesByNatureAxis=bvn_ServicesProvidedByThirdPartiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

Name:	bvn_ExpensesByNatureAxis=bvn_DirectLaborMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: