XML 257 R243.htm IDEA: XBRL DOCUMENT
v3.19.1

Sales of goods (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Sales of goods [Line Items] |  |  |
Revenue from sale of goods before deducting royalty expense | $ 3,061,930 | $ 3,211,266 | $ 2,390,840
Royalty expense | (21,526) | (31,217) | (27,611)
Revenue from sale of goods | 1,122,995 | 1,223,942 | 1,015,670
North Americ [Member] |  |  |
Disclosure of Sales of goods [Line Items] |  |  |
Revenue from sale of goods before deducting royalty expense | 295,448 | 287,174 | 213,002
South America primarily Peru [Member] |  |  |
Disclosure of Sales of goods [Line Items] |  |  |
Revenue from sale of goods before deducting royalty expense | 136,400 | 193,174 | 150,648
Asia [Member] |  |  |
Disclosure of Sales of goods [Line Items] |  |  |
Revenue from sale of goods before deducting royalty expense | 2,404,530 | 2,416,826 | 1,865,346
Revenue from sale of goods | 120,519 | 120,719 | 97,467
Europe [Member] |  |  |
Disclosure of Sales of goods [Line Items] |  |  |
Revenue from sale of goods before deducting royalty expense | 209,894 | 314,092 | 161,844
Revenue from sale of goods | 100,792 | 81,333 | 121,929
Central America |  |  |
Disclosure of Sales of goods [Line Items] |  |  |
Revenue from sale of goods before deducting royalty expense | 15,658 | 0 | 0
Revenue from sale of goods | $ 370,624 | $ 471,863 | $ 397,795

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfSalesOfGoodsLineItems
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of revenue arising from the sale of goods before deducting royalty expense. + References No definition available. + Details
Name: | cik0001013131_RevenueFromSaleOfGoodsBeforeDeductingRoyaltyExpense
Namespace Prefix: | cik0001013131_
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=cik0001013131_NorthAmericMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=cik0001013131_SouthAmericaPrimarilyPeruMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=cik0001013131_AsiasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=cik0001013131_EuropesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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