XML 86 R72.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Subsidiaries with material non-controlling interest (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Disclosure Of Subsidiaries with material non-controlling interest [Abstract] |
Disclosure of non-controlling interests [text block] | Financial information of subsidiaries that have material non-controlling interest are provided below:
|  | Country of incorporation and operation |  | 2017 |  | 2016 |  | 2015 |
|  |  |  | % |  | % |  | % |
Equity interest held by non-controlling interests: |  |  |  |  |  |  |  |  |  |  |  |
Sociedad Minera El Brocal S.A.A. |  | Peru |  |  | 38.58 |  |  | 38.67 |  |  | 45.93 |
S.M.R.L. Chaupiloma Dos de Cajamarca |  | Peru |  |  | 40.00 |  |  | 40.00 |  |  | 40.00 |
Minera La Zanja S.R.L. |  | Peru |  |  | 46.94 |  |  | 46.94 |  |  | 46.94 |
|  |  |  | 2017 |  | 2016 |  | 2015 |
|  |  |  | US$(000) |  | US$(000) |  | US$(000) |
Accumulated balances of material non-controlling interest: |  |  |  |  |  |  |  |  |  |  |  |
Sociedad Minera El Brocal S.A.A. |  | Peru |  |  | 165,032 |  |  | 167,986 |  |  | 172,542 |
Minera La Zanja S.R.L. |  | Peru |  |  | 48,642 |  |  | 55,613 |  |  | 53,271 |
S.M.R.L. Chaupiloma Dos de Cajamarca |  | Peru |  |  | 1,693 |  |  | 1,906 |  |  | 2,357 |
Apu Coropuna S.R.L. |  | Peru |  |  | 223 |  |  | 678 |  |  | - |
Other minor |  | Chile |  |  | - |  |  | (61) |  |  | - |
|  |  |  |  | 215,590 |  |  | 226,122 |  |  | 228,170 |
Profit (loss) allocated to material non-controlling interest: |  |  |  |  |  |  |  |  |  |  |  |
S.M.R.L. Chaupiloma Dos de Cajamarca |  | Peru |  |  | 5,827 |  |  | 6,950 |  |  | 9,244 |
Sociedad Minera El Brocal S.A.A. |  | Peru |  |  | 4,246 |  |  | (13,426) |  |  | (34,991) |
Minera La Zanja S.R.L. |  | Peru |  |  | (6,006) |  |  | 2,342 |  |  | (32,486) |
Apu Coropuna S.R.L. |  | Peru |  |  | (454) |  |  | (157) |  |  | (102) |
Other minor |  | Chile |  |  | (1) |  |  | (31) |  |  | - |
|  |  |  |  | 3,612 |  |  | (4,322) |  |  | (58,335) |
Disclosure of financial position of subsidiaries [text block] | The summarized financial information of these subsidiaries, before inter-company eliminations, is presented below: Statements of financial position as of December 31, 2017:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Apu Coropuna S.R.L. |  | Other minor |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Current assets |  |  | 146,865 |  |  | 6,640 |  |  | 134,758 |  |  | 1,440 |  |  | 665 |  |  | 290,368 |
Non-current assets |  |  | 645,729 |  |  | - |  |  | 55,873 |  |  | 189 |  |  | 30 |  |  | 701,821 |
Current liabilities |  |  | (159,190) |  |  | (2,407) |  |  | (38,807) |  |  | (143) |  |  | (29) |  |  | (200,576) |
Non-current liabilities |  |  | (229,709) |  |  | - |  |  | (48,201) |  |  | (740) |  |  | (2) |  |  | (278,652) |
Total shareholders’ equity, net |  |  | 403,695 |  |  | 4,233 |  |  | 103,623 |  |  | 746 |  |  | 664 |  |  | 512,961 |
Attributable to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders of the parent |  |  | 239,925 |  |  | 2,540 |  |  | 54,981 |  |  | 523 |  |  | 664 |  |  | 298,633 |
Non-controlling interests |  |  | 165,032 |  |  | 1,693 |  |  | 48,642 |  |  | 223 |  |  | - |  |  | 215,590 |
|  |  | 404,957 |  |  | 4,233 |  |  | 103,623 |  |  | 746 |  |  | 664 |  |  | 514,223 |
Statements of financial position as of December 31, 2016:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Apu Coropuna S.R.L. |  | Other minor |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Current assets |  |  | 120,291 |  |  | 7,439 |  |  | 155,659 |  |  | 2,301 |  |  | 81 |  |  | 285,771 |
Non-current assets |  |  | 642,790 |  |  | - |  |  | 90,447 |  |  | 88 |  |  | 500 |  |  | 733,825 |
Current liabilities |  |  | (184,324) |  |  | (2,684) |  |  | (40,411) |  |  | (129) |  |  | - |  |  | (227,548) |
Non-current liabilities |  |  | (168,589) |  |  | - |  |  | (89,278) |  |  | - |  |  | (2) |  |  | (257,869) |
Total shareholders’ equity, net |  |  | 410,168 |  |  | 4,755 |  |  | 116,417 |  |  | 2,260 |  |  | 579 |  |  | 534,179 |
Attributable to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders of the parent |  |  | 242,182 |  |  | 2,849 |  |  | 60,804 |  |  | 1,582 |  |  | 640 |  |  | 308,057 |
Non-controlling interests |  |  | 167,986 |  |  | 1,906 |  |  | 55,613 |  |  | 678 |  |  | (61) |  |  | 226,122 |
|  |  | 410,168 |  |  | 4,755 |  |  | 116,417 |  |  | 2,260 |  |  | 579 |  |  | 534,179 |
Disclosure of statement of profit or loss of subsidiaries [text block] | Statements of profit or loss for the year ended December 31, 2017:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Apu Coropuna S.R.L. |  | Other minor |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Revenues |  |  | 322,653 |  |  | 20,739 |  |  | 165,319 |  |  | - |  |  | - |  |  | 508,711 |
Cost of sales |  |  | (254,390) |  |  | - |  |  | (153,230) |  |  | - |  |  | - |  |  | (407,620) |
Administrative expenses |  |  | (13,061) |  |  | (90) |  |  | (2,814) |  |  | (92) |  |  | (24) |  |  | (16,081) |
Sales expenses |  |  | (10,914) |  |  | - |  |  | (881) |  |  | - |  |  | - |  |  | (11,795) |
Exploration in non-operating areas |  |  | (1,975) |  |  | - |  |  | (2,871) |  |  | (680) |  |  | - |  |  | (5,526) |
Other operating expense, net |  |  | (2,923) |  |  | (1) |  |  | (969) |  |  | (744) |  |  | - |  |  | (4,637) |
Provision for contingencies |  |  | - |  |  | - |  |  | (1,370) |  |  | 1 |  |  | - |  |  | (1,369) |
Impairment loss of long-lived assets |  |  | (13,573) |  |  | - |  |  | (21,620) |  |  | - |  |  | - |  |  | (35,193) |
Finance income |  |  | 179 |  |  | 7 |  |  | 670 |  |  | - |  |  | - |  |  | 856 |
Finance costs |  |  | (12,017) |  |  | (2) |  |  | (1,918) |  |  | (1) |  |  | - |  |  | (13,938) |
Net gain (loss) for exchange difference |  |  | 310 |  |  | (41) |  |  | 48 |  |  | 1 |  |  | 410 |  |  | 728 |
Profit (loss) before income tax |  |  | 14,289 |  |  | 20,612 |  |  | (19,636) |  |  | (1,515) |  |  | 386 |  |  | 14,136 |
Income tax |  |  | (3,903) |  |  | (6,044) |  |  | 6,841 |  |  | - |  |  | - |  |  | (3,106) |
Net profit (loss) |  |  | 10,386 |  |  | 14,568 |  |  | (12,795) |  |  | (1,515) |  |  | 386 |  |  | 11,030 |
Attributable to non-controlling interests |  |  | 4,246 |  |  | 5,827 |  |  | (6,006) |  |  | (454) |  |  | (1) |  |  | 3,612 |
Dividends paid to non-controlling interests |  |  | - |  |  | 6,036 |  |  | - |  |  | - |  |  | - |  |  | 6,036 |
Statements of profit or loss for the year ended December 31, 2016:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Apu Coropuna S.R.L. |  | Other minor |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Revenues |  |  | 230,611 |  |  | 24,339 |  |  | 178,922 |  |  | - |  |  | - |  |  | 433,872 |
Cost of sales |  |  | (234,594) |  |  | (16) |  |  | (150,039) |  |  | - |  |  | - |  |  | (384,649) |
Administrative expenses |  |  | (11,802) |  |  | (112) |  |  | (1,980) |  |  | (4) |  |  | - |  |  | (13,898) |
Sales expenses |  |  | (10,650) |  |  | - |  |  | (938) |  |  | - |  |  | - |  |  | (11,588) |
Exploration in non-operating areas |  |  | (1,939) |  |  | - |  |  | (4,619) |  |  | (524) |  |  | - |  |  | (7,082) |
Other operating expense, net |  |  | 309 |  |  | 11 |  |  | 4,237 |  |  | - |  |  | (410) |  |  | 4,147 |
Finance income |  |  | 256 |  |  | - |  |  | 87 |  |  | - |  |  | - |  |  | 343 |
Finance costs |  |  | (12,554) |  |  | (2) |  |  | (2,614) |  |  | - |  |  | - |  |  | (15,170) |
Net gain (loss) for exchange difference |  |  | (270) |  |  | (93) |  |  | 65 |  |  | 5 |  |  | - |  |  | (293) |
Profit (loss) before income tax |  |  | (40,633) |  |  | 24,127 |  |  | 23,121 |  |  | (523) |  |  | (410) |  |  | 5,682 |
Income tax |  |  | 7,851 |  |  | (6,761) |  |  | (18,256) |  |  | - |  |  | - |  |  | (17,166) |
Net profit (loss) |  |  | (32,782) |  |  | 17,366 |  |  | 4,865 |  |  | (523) |  |  | (410) |  |  | (11,484) |
Attributable to non-controlling interests |  |  | (13,426) |  |  | 6,950 |  |  | 2,342 |  |  | (157) |  |  | (31) |  |  | (4,322) |
Dividends paid to non-controlling interests |  |  | - |  |  | 7,400 |  |  | - |  |  | - |  |  | - |  |  | 7,400 |
Statements of profit or loss for the year ended December 31, 2015:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Revenues |  |  | 171,294 |  |  | 32,414 |  |  | 161,007 |  |  | 364,715 |
Cost of sales |  |  | (204,556) |  |  | (54) |  |  | (213,372) |  |  | (417,982) |
Administrative expenses |  |  | (19,168) |  |  | (106) |  |  | (2,251) |  |  | (21,525) |
Sales expenses |  |  | (9,056) |  |  | - |  |  | (1,207) |  |  | (10,263) |
Exploration in non-operating areas |  |  | (2,366) |  |  | - |  |  | (8,954) |  |  | (11,320) |
Impairment loss of long-lived assets |  |  | - |  |  | - |  |  | (3,803) |  |  | (3,803) |
Other operating expense, net |  |  | (2,657) |  |  | - |  |  | (687) |  |  | (3,344) |
Finance income |  |  | 154 |  |  | - |  |  | 16 |  |  | 170 |
Finance costs |  |  | (10,096) |  |  | (4) |  |  | (3,684) |  |  | (13,784) |
Net gain (loss) for exchange difference |  |  | (3,847) |  |  | 45 |  |  | (1,973) |  |  | (5,775) |
Profit (loss) before income tax |  |  | (80,298) |  |  | 32,295 |  |  | (74,908) |  |  | (122,911) |
Income tax |  |  | 4,109 |  |  | (9,186) |  |  | 5,702 |  |  | 625 |
Net profit (loss) |  |  | (76,189) |  |  | 23,109 |  |  | (69,206) |  |  | (122,286) |
Attributable to non-controlling interests |  |  | (34,991) |  |  | 9,244 |  |  | (32,486) |  |  | (58,335) |
Dividends paid to non-controlling interests |  |  | - |  |  | 10,488 |  |  | - |  |  | 10,488 |
Disclosure of cash flow statement [text block] | Statements of cash flow for the year ended December 31, 2017:
|  | Sociedad Minera El | Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Apu Coropuna S.R.L. |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Operating activities |  |  | 60,525 |  |  | 15,093 |  |  | 139,155 |  |  | (185) |  |  | 214,588 |
Investing activities |  |  | (64,343) |  |  | - |  |  | (17,326) |  |  | - |  |  | (81,669) |
Financing activities |  |  | 18,096 |  |  | (15,090) |  |  | (32,077) |  |  | 1,477 |  |  | (27,594) |
Increase in cash and cash equivalents in the year |  |  | 14,278 |  |  | 3 |  |  | 89,752 |  |  | 1,292 |  |  | 105,325 |
Statements of cash flow for the year ended December 31, 2016:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Apu Coropuna S.R.L. |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Operating activities |  |  | (9,151) |  |  | 18,178 |  |  | 11,839 |  |  | (1,895) |  |  | 18,971 |
Investing activities |  |  | (37,935) |  |  | - |  |  | (14,994) |  |  | - |  |  | (52,929) |
Financing activities |  |  | 48,021 |  |  | (18,500) |  |  | - |  |  | 2,717 |  |  | 32,238 |
Increase (decrease) in cash and cash equivalents in the year |  |  | 935 |  |  | (322) |  |  | (3,155) |  |  | 822 |  |  | (1,720) |
Statements of cash flow for the year ended December 31, 2015:
|  | Sociedad Minera El Brocal S.A.A. |  | S.M.R.L. Chaupiloma Dos de Cajamarca |  | Minera La Zanja S.R.L. |  | Total |
|  | US$(000) |  | US$(000) |  | US$(000) |  | US$(000) |
Operating activities |  |  | (1,523) |  |  | 26,474 |  |  | 30,743 |  |  | 55,694 |
Investing activities |  |  | (28,375) |  |  | - |  |  | (26,761) |  |  | (55,136) |
Financing activities |  |  | 31,867 |  |  | (26,220) |  |  | - |  |  | 5,647 |
Increase in cash and cash equivalents in the year |  |  | 1,969 |  |  | 254 |  |  | 3,982 |  |  | 6,205 |

X
- Definition The disclosure of financial position of subsidiaries. + References No definition available. + Details
Name: | cik0001013131_DisclosureOfFinancialPositionOfSubsidiariesTextBlock
Namespace Prefix: | cik0001013131_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of statement of profit or loss of subsidiaries. + References No definition available. + Details
Name: | cik0001013131_DisclosureOfStatementOfProfitOrLossOfSubsidiariesTextBlock
Namespace Prefix: | cik0001013131_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfSubsidiariesWithMaterialNoncontrollingInterestAbstract
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for a statement of cash flows. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Section Presentation of a statement of cash flows -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=sect_Presentationofastatementofcashflows&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfCashFlowStatementExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of non-controlling interests. [Refer: Non-controlling interests] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration