XML 177 R163.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Shareholders’ equity, net (Details 4) - Sociedad Minera Cerro Verde S.A.A. [Member] | 12 Months Ended
--- | ---
Dec. 31, 2017 Number
Disclosure of Shareholders’ equity, net [Line Items] |
Number of shareholders | 2,839
Percentage of equity interest | 100.00%
Up to 1.00 [Member] |
Disclosure of Shareholders’ equity, net [Line Items] |
Number of shareholders | 2,835
Percentage of equity interest | 4.37%
From 1.01 to 20.00 [Member] |
Disclosure of Shareholders’ equity, net [Line Items] |
Number of shareholders | 2
Percentage of equity interest | 21.07%
From 20.01 to 30.00 [Member] |
Disclosure of Shareholders’ equity, net [Line Items] |
Number of shareholders | 1
Percentage of equity interest | 21.00%
From 30.01 to 60.00 [Member] |
Disclosure of Shareholders’ equity, net [Line Items] |
Number of shareholders | 1
Percentage of equity interest | 53.56%

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfShareholdersEquityNetLineItems
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity shareholders. + References No definition available. + Details
Name: | cik0001013131_NumberOfShareholders
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of equity interest. + References No definition available. + Details
Name: | cik0001013131_PercentageOfEquityInterest
Namespace Prefix: | cik0001013131_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_SociedadMineraCerroVerdeSaaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_PercentageInterestRangesAxis=cik0001013131_UpTo100Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_PercentageInterestRangesAxis=cik0001013131_From101To2000Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_PercentageInterestRangesAxis=cik0001013131_From2001To3000Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_PercentageInterestRangesAxis=cik0001013131_From3001To6000Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |