XML 32 R18.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Available-for-sale financial assets | 12 Months Ended
--- | ---
Dec. 31, 2017
Minera Yanacocha SRL and subsidiary [Member] |
Disclosure of available-for-sale financial assets [Line Items] |
Disclosure of available-for-sale financial assets [text block] |
9. | Available-for-sale financial assets
In November 2008, the Company funded the San Jose Reservoir Trust for US$13 million to ensure the continuity of the Company's operations in the San Jose Reservoir after 2018. Such trust is irrevocable and is a separate legal entity of the Company. The grantor is the Company, the trustee is the Banco de Credito del Peru and the beneficiary is the Company; therefore, the Company consolidates the trust. As of December 31, 2017, the trust total balance is US$23,000,000 and is presented as Available-for-sale financial assets (trust total balance of US$16,454,000 as of December 31, 2016). During 2017, these investments, denominated in U.S. dollars, accrued losses net of taxes of US$3,244,000 (profit of US$651,000 in 2016 and losses of US$757,000 in 2015) which are included in the consolidated statement of comprehensive income.

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfAvailableforsaleFinancialAssetsLineItems
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of financial assets classified as available for sale. [Refer: Financial assets available-for-sale] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfAvailableforsaleAssetsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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