XML 155 R141.htm IDEA: XBRL DOCUMENT v3.19.1

Investments in associates and joint ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Investments in associates [Line Items]
Proportion of ownership interest in associate	43.65%
Joint ventures	$ 2,673	$ 0
Investments in associates	1,473,382	1,536,887	$ 1,536,607
Investment In Associates And Joint Ventures	$ 1,473,382	$ 1,536,887
Sociedad Minera Cerro Verde S.A.A. [Member]
Disclosure of Investments in associates [Line Items]
Proportion of ownership interest in associate	19.58%	19.58%
Investments in associates	$ 1,108,284	$ 1,124,008
Compania Minera Coimolache S.A. [Member]
Disclosure of Investments in associates [Line Items]
Proportion of ownership interest in associate	40.10%	40.10%
Investments in associates	$ 0	$ 0	0
Minera Yanacocha S.R.L. [Member]
Disclosure of Investments in associates [Line Items]
Proportion of ownership interest in associate	43.65%	45.95%
Investments in associates	$ 0	$ 0	$ 0
Other minor investments [Member]
Disclosure of Investments in associates [Line Items]
Investments in associates	1,835	1,835
Investment In Associates Excluding Minor Investments [Member]
Disclosure of Investments in associates [Line Items]
Investments in associates	$ 1,468,874	$ 1,535,052

X

- References

No definition available.

+ Details

Name:	cik0001013131_DisclosureOfInvestmentsInAssociatesLineItems
Namespace Prefix:	cik0001013131_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents total investment in associates and jont ventures.

+ References

No definition available.

+ Details

Name:	cik0001013131_InvestmentInAssociatesAndJointVentures
Namespace Prefix:	cik0001013131_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2018-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_10&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_InvestmentsInAssociates
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2018-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_10&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_InvestmentsInJointVentures
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2018-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_17_b_iii&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2018-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_16_b_iii&doctype=Standard
-URIDate 2018-03-16

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2018-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_21_a_iv&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInAssociate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_SociedadsMinerasCerroVerdeSaaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_CompaniaMineraCoimolacheSaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_MineraYanacochaSrlMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_OtherMinorInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_InvestmentInAssociatesExcludingMinorInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: