XML 243 R229.htm IDEA: XBRL DOCUMENT v3.19.1

Revenue from sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue from sale of gold	$ 411,926	$ 511,434	$ 440,603
Royalty expense	(21,526)	(31,217)	(27,611)
Revenue from sale of goods	1,122,995	1,223,942	1,015,670
America [member]
Revenue from sale of goods	370,624	471,863	397,795
Minera Yanacocha SRL and subsidiary [member]
Revenue from sale of gold	658,653	670,905	791,766
Revenue from sale of goods	635,393	645,176	761,193
Minera Yanacocha SRL and subsidiary [member] | Peruvian government [member]
Royalty expense	(2,875)	(4,990)	(6,234)
Minera Yanacocha SRL and subsidiary [member] | S.M.R.L. Chaupiloma Dos de Cajamarca [member]
Royalty expense	(20,385)	(20,739)	(24,339)
Minera Yanacocha SRL and subsidiary [member] | America [member]
Revenue from sale of gold	139,989	179,018	233,043
Minera Yanacocha SRL and subsidiary [member] | Switzerland [Member]
Revenue from sale of gold	$ 518,664	$ 491,887	$ 558,723

X

- Definition

The amount of revenue arising from the sale of gold. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_RevenueFromSaleOfGold
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of revenue arising from the sale of goods. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_RevenueFromSaleOfGoods
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of expense arising from royalties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_RoyaltyExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_MineraYanacochaSrlAndSubsidiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=cik0001013131_PeruvianGovernmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=cik0001013131_SmrlChaupilomaDosDeCajamarcaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_CH
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: