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Intangible assets and goodwill (Details 3) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement [Line Items] |  |  |
Goodwill | $ 34,726 | $ 34,866 | $ 37,972
Additional recognition | 0 | 0 |
Impairment losses | (140) | (3,254) |
Transferred to available for sale | 34,726 | 0 |
SQM Industrial S.A. [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 3,214 | 3,214 | 3,214
Additional recognition | 0 | 0 |
Impairment losses | (3,214) | 0 |
Transferred to available for sale | 0 | 0 |
SQM S.A [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 22,255 | 22,255 | 22,255
Additional recognition | 0 | 0 |
Impairment losses | 0 | 0 |
Transferred to available for sale | 0 | 0 |
SQM Iberian S.A. [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 148 | 148 | 0
Additional recognition | 0 | 0 |
Impairment losses | 0 | 0 |
Transferred to available for sale | 0 | 0 |
SQM Investment Corporation N.V. [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 86 | 86 | 86
Additional recognition | 0 | 0 |
Impairment losses | 0 | 0 |
Transferred to available for sale | 0 | 0 |
Soquimich Comercial S.A. [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 140 | 280 | 320
Additional recognition | 0 | 0 |
Impairment losses | (180) | 0 |
Transferred to available for sale | 140 | 0 |
Soquimich European Holding B.V. [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 11,373 | 11,373 | 11,373
Additional recognition | 0 | 0 |
Impairment losses | 0 | 0 |
Transferred to available for sale | 11,373 | 0 |
SQM Potasio S.A. [Member] |  |  |
Statement [Line Items] |  |  |
Goodwill | 724 | 724 | $ 724
Additional recognition | 0 | 0 |
Impairment losses | 0 | 0 |
Transferred to available for sale | $ 0 | $ 0 |

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- Definition The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B67 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B67_d_ii&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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- Definition The decrease in goodwill due to classification as held for sale. [Refer: Goodwill; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B67 -Subparagraph d -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B67_d_iv&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B67 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2019-01-01 -Paragraph 134 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_134_a&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2019-01-01 -Paragraph 135 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_135_a&doctype=Standard -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_c&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B67 -Subparagraph d -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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