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Related party disclosures - Significant Transactions with Related Parties (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Doktor Tarsa Tarim Sanayi AS |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions |  |  | $ 1,053
Ajay Europe SARL |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions | $ 45,205 | $ 35,597 | 23,162
Dividend income | 1,778 | 992 | 1,197
Ajay North America LLC |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions | 41,814 | 27,763 | 20,259
Dividend income | 1,576 | 1,233 | 1,967
Abu Dhabi Fertilizer Industries WWL |  |  |
Related party disclosures [Line Items] |  |  |
Dividend income | 3,000 | 9,438 |
SQM Vitas Brasil Agroindustria |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions | 51,748 | 79,086 | 41,341
SQM Vitas Peru S.A.C. |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions | 58,077 | 17,016 | 17,723
Coromandel SQM India |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions |  | 1,814 | 1,510
SQM Star Qingdao Corp Nutrition Co., Ltd. |  |  |
Related party disclosures [Line Items] |  |  |
Dividend income |  |  | 2,223
Terra Tarsa Ukraine LLC |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions |  |  | 737
Pavoni & C. Spa |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions | 4,138 | 5,359 | $ 1,125
Banco de Chile |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (27,918) | (20,904) |
Norte Grande S.A. |  |  |
Related party disclosures [Line Items] |  |  |
Revenue from sale of goods, related party transactions | 142 | 146 |
El Mercurio S.A.P. |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (90) | (131) |
Compania de Seguros de Vida Consorcio Nacional |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (31) | (134) |
Entel PCS Telecomunicaciones S.A. |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (228) | (157) |
Empresa Nacional de Telecomunicaciones S.A. |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (1,746) | (2,393) |
Gonzalo Guerrero Yamamoto |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (19) | $ (79) |
Instituto Chileno administracion empresas |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | (46) |  |
Fundacion para el desarrollo social |  |  |
Related party disclosures [Line Items] |  |  |
Services received, related party transactions | $ (7) |  |

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