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Provisions and other non-financial liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of Provisions and other non-financial liabilities [Line Items] |  |  |  |  |  |
Current provisions |  |  | $ 106,197 |  | $ 110,565 |
Non-current provisions |  |  | 31,822 |  | 34,690 |
Provisions |  |  | 138,019 |  | 145,255 |
Provision for legal complaints [member] |  |  |  |  |  |
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |  |  |  |  |
Current provisions | [1] |  | 11,862 |  | 13,472 |
Non-current provisions | [1] |  | 3,000 |  | 1,452 |
Provisions | [1] |  | 14,862 |  | 14,924 |
Provision for decommissioning, restoration and rehabilitation costs [member] |  |  |  |  |  |
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |  |  |  |  |
Current provisions | [2] |  | 0 |  | 0 |
Non-current provisions | [2] |  | 28,822 |  | 33,238 |
Provisions | [2] |  | 28,822 |  | 33,238 |
Other provisions [member] |  |  |  |  |  |
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |  |  |  |  |
Current provisions |  | $ 97,093 | 94,335 | [3] | 97,093 | [3]
Non-current provisions | [3] |  | 0 |  | 0 |
Provisions | [3] |  | $ 94,335 |  | $ 97,093 |
[1] | These provisions correspond to legal processes that are pending resolution or that have not yet been disbursed. These provisions are mainly related to litigation involving the subsidiaries located in Chile, Brazil and the United States (see note 21.1).
[2] | The provisions related to commitments with Sernageomin have been incorporated through the issuance of a guarantee for the restoration of the place where the production sites are located.
[3] | See Note 18.2

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