XML 203 R189.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Finance costs and finance revenues (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Aug. 18, 2014
Percentage of voting equity interests acquired | 5.00% |
Contingent consideration arrangements and indemnification assets recognised as of acquisition date | $ 23,026,000 |
Royalty rate | 1.50% |
Minera Gold Fields Peru S.A [Member] |  |
Percentage of voting equity interests acquired |  | 51.00%

X
- Definition The percentage of royalty rate determined. + References No definition available. + Details
Name: | cik0001013131_RoyaltyRate
Namespace Prefix: | cik0001013131_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount recognised as of the acquisition date for contingent consideration arrangements assumed and indemnification assets acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B64 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_g_i&doctype=Appendix&seq=2 -URIDate 2017-03-09 + Details
Name: | ifrs-full_ContingentConsiderationArrangementsAndIndemnificationAssetsRecognisedAsOfAcquisitionDate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B64 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_c&doctype=Appendix&seq=2 -URIDate 2017-03-09 + Details
Name: | ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=cik0001013131_MineraGoldFieldsPeruSaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |