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Trade and other receivables, net (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of Trade and other receivables, net [Line Items] |  |  |
Opening balance | $ (8,963) | $ 4,779 |
Ending balance | 9,361 | (8,963) | $ 4,779
Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |
Opening balance | (1,407) | 1,444 | 1,788
Additions | 0 | 0 | 88
Deductions | (23) | (37) | (432)
Ending balance | $ 1,384 | $ (1,407) | $ 1,444

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- Definition The amount of additions in allowance for doubtful accounts provided during the year. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of allowance of receivables classified as other receivables. + References No definition available. + Details
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Namespace Prefix: | cik0001013131_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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X
- Definition The amount of deductions in allowance for doubtful accounts provided during the year. + References No definition available. + Details
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Namespace Prefix: | cik0001013131_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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