XML 130 R116.htm IDEA: XBRL DOCUMENT
v3.19.1

Basis for preparation, consolidation and accounting policies (Details 2) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Categories of financial assets [abstract] |  |  |  |
Financial assets | $ 68,736 |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 587,062 | $ 633,083 | $ 592,342 | $ 353,710
Accounts And Trade Receivables Non Provisional Pricing [Member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 1,703 |  |  |
Accounts And Trade Receivables Provisional Pricing [Member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 412,829 |  |  |
Trade accounts payable [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 194,958 |  |  |
Accounts payable to Related parties [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 13,681 |  |  |
Other financial liabilities [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 1,268,488 |  |  |
Provision related to benefits to employees [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 109,903 |  |  |
Other accounts payable [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 73,606 |  |  |
Financial assets at fair value through profit or loss, category [member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 0 |  |  |
Financial assets at fair value through profit or loss, category [member] | Accounts And Trade Receivables Non Provisional Pricing [Member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 0 |  |  |
Financial assets at fair value through profit or loss, category [member] | Accounts And Trade Receivables Provisional Pricing [Member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 481,565 |  |  |
Financial assets at fair value through profit or loss, category [member] | Trade accounts payable [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 0 |  |  |
Financial assets at fair value through profit or loss, category [member] | Accounts payable to Related parties [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 0 |  |  |
Financial assets at fair value through profit or loss, category [member] | Other financial liabilities [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 0 |  |  |
Financial assets at fair value through profit or loss, category [member] | Provision related to benefits to employees [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 0 |  |  |
Financial assets at fair value through profit or loss, category [member] | Other accounts payable [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 0 |  |  |
Financial assets at amortised cost, category [member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 0 |  |  |
Financial assets at amortised cost, category [member] | Accounts And Trade Receivables Non Provisional Pricing [Member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 1,703 |  |  |
Financial assets at amortised cost, category [member] | Accounts And Trade Receivables Provisional Pricing [Member] |  |  |  |
Categories of financial assets [abstract] |  |  |  |
Financial assets | 0 |  |  |
Financial assets at amortised cost, category [member] | Trade accounts payable [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 194,958 |  |  |
Financial assets at amortised cost, category [member] | Accounts payable to Related parties [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 13,681 |  |  |
Financial assets at amortised cost, category [member] | Other financial liabilities [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 1,268,488 |  |  |
Financial assets at amortised cost, category [member] | Provision related to benefits to employees [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | 109,903 |  |  |
Financial assets at amortised cost, category [member] | Other accounts payable [Member] |  |  |  |
Financial liabilities at fair value through profit or loss [abstract] |  |  |  |
Financial liabilities | $ 73,606 |  |  |

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

X
- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_25&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35H -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35H&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35I -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35I&doctype=Standard -URIDate 2018-03-16 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35M -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35M&doctype=Standard -URIDate 2018-03-16 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35N&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_FinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_25&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_FinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_AccountsAndTradeReceivablesNonProvisionalPricingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_AccountsAndTradeReceivablesProvisionalPricingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_TradeAccountsPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_AccountsPayableToRelatedPartiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_OtherFinancialLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_ProvisionRelatedToBenefitsToEmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cik0001013131_OtherAccountsPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |