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Trade and other receivables, net (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Trade receivables, gross |  | $ 228,855 | $ 174,825 |
Trade receivables, net ,Allowance for doubtful accounts |  | (22,823) | (22,644) | $ 21,741
Trade receivables, net |  | 206,032 | 152,181 |
Other receivables |  | 154,404 | 291,919 |
Other receivables, Allowance for doubtful accounts |  | 9,361 | (8,963) | $ 4,779
Total trade and other receivables, net |  | 351,075 | 435,137 |
Classification by maturity: |  |  |  |
Current portion |  | 306,884 | 269,089 |
Non-current portion |  | 44,191 | 166,048 |
Total trade and other receivables, net |  | 351,075 | 435,137 |
Classification by nature: |  |  |  |
Financial receivables |  | 255,088 | 319,454 |
Non-financial receivables |  | 95,987 | 115,683 |
Total trade and other receivables, net |  | 351,075 | 435,137 |
Embedded derivatives for sale of concentrate, net |  | 7,424 | 0 |
Sociedad Minera Cerro Verde S.A.A. [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 1,656 | 2,594 |
Classification by nature: |  |  |  |
Embedded derivatives for sale of concentrate, net |  | 68,736 | 67,449 |
CASE and SISE Contributions Refund | [1] | 6,474 | 0 |
Other current receivables |  | 76,866 | 70,043 |
Domestic clients [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Trade receivables, gross |  | 102,119 | 89,811 |
Foreign clients [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Trade receivables, gross |  | 119,388 | 77,254 |
Related entities [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Trade receivables, gross | [2] | 7,348 | 7,760 |
Other receivables | [2] | 732 | 126,669 |
Value added tax credit [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 74,785 | 96,204 |
Claims to third parties [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 3,851 | 113 |
Refund application of value added tax [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 18,450 | 17,037 |
Tax deposits [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables | [3] | 9,733 | 13,479 |
Restricted bank accounts [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables | [4] | 2,372 | 2,087 |
Other minors [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 4,675 | 1,021 |
Accounts payable to third parties [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 27,406 | 26,705 |
Due from sale of assets [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 5,371 | 5,204 |
Claims to tax authority [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 2,752 | 2,492 |
Accounts receivable from hedge instruments [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | 2,300 | 0 |
Advances to suppliers [Member] |  |  |  |
Disclosure of Trade and other receivables, net [Line Items] |  |  |  |
Other receivables |  | $ 1,977 | $ 908 |
[1] | Corresponds to the energy and fuel invoice payments made for the years 2015 and 2016 related to the Charge for Energy Security Consolidation (CASE) and the Charge for Energy Security on Hydrocarbons System (SISE). Law N°30543, passed on March 02, 2017, establishes the elimination and refund of these payments.
[2] | Trade accounts receivable are denominated in U.S. dollars, are neither due nor impaired, do not yield interest and have no specific guarantees.
[3] | Corresponds to deposits held in the Peruvian State bank which only can be used to offset tax obligations that companies have with the Tax Authorities.
[4] | These balances correspond to restricted bank accounts for payment of financial obligations held by the subsidiary Empresa de Generación Huanza S.A. (hereafter “Huanza”), according to the finance lease signed with Banco de Crédito del Perú in 2009.

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