XML 30 R16.htm IDEA: XBRL DOCUMENT v3.8.0.1

Stockpiles and ore on leach pads, net

12 Months Ended

Dec. 31, 2017

Minera Yanacocha SRL and subsidiary [Member]

Disclosure of stockpiles and ore on leach pads [Line Items]

Disclosure of stockpiles and ore on leach pads [Text Block]

8. Stockpiles and ore on leach pads, net

(a) This caption is made up as follows:

		2017			2016
		US$(000)			US$(000)
Current portion -
Stockpiles			77,296			92,309
Ore on leach pads			159,930			209,471
Provision for net realizable value adjustment (b)			(40,588)			(75,423)
			196,638			226,357
Non-current portion -
Stockpiles			32,362			41,997
Ore on leach pads			50,350			78,843
Provision for net realizable value adjustment (b)			(21,952)			(8,951)
			60,760			111,889

(b) The provision for net realizable value adjustment had the following movement during the years 2017, 2016 and 2015:

		2017			2016			2015
		US$(000)			US$(000)			US$(000)
Opening balance, note 16			84,374			90,298			163,094
Provision			77,385			100,179			64,497
Reversal of provision			(99,219)			(106,103)			(137,293)
Ending balance, note 16			62,540			84,374			90,298

X

- References

No definition available.

+ Details

Name:	cik0001013131_DisclosureOfStockpilesAndOreOnLeachPadsLineItems
Namespace Prefix:	cik0001013131_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of stockpiles and ore on leach pads.

+ References

No definition available.

+ Details

Name:	cik0001013131_DisclosureOfStockpilesAndOreOnLeachPadsTextBlock
Namespace Prefix:	cik0001013131_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_MineraYanacochaSrlAndSubsidiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: