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Effect of fluctuations in foreign currency exchange rates - (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | $ (8,042) | $ (7,913) | $ (11,569)
Comercial Hydro S.A. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 1,004 | 1,004 | 1,004
SQMC Internacional Ltda. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (9) | (9) | (9)
Proinsa Ltda. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (10) | (10) | (10)
Comercial Agrorama Ltda. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 175 | 155 | (19)
Isapre Norte Grande Ltda. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (130) | (121) | (14)
Almacenes y Depsitos Ltda. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 568 | 305 | 211
Sacal S.A. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (3) | (3) | (3)
Sociedad Prestadora de Servicios de Salud Cruz del Norte S.A. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (38) | (36) | (13)
Argrorama S.A. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 666 | 628 | 92
SQM Vitas Fzco. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (3,614) | (4,165) | (3,736)
Ajay Europe |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (1,911) | (1,413) | (693)
SQM Oceana Pty Ltd. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (579) | (579) | (579)
SQM Indonesia S.A. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (124) | (124) | (124)
Abu Dhabi Fertillizers Industries WWL. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 0 | 372 | 372
SQM Holland B.V. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 99 | 99 | 99
SQM Thailand Limited |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (68) | (68) | (68)
SQM Europe |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (1,983) | (1,983) | (1,983)
SQM Australia Pty Ltd. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (1,642) | (1,732) | (4,052)
Pavoni & C. Spa |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | (363) | (153) | 164
Kore Potash PLC |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | 0 | 0 | (2,128)
SQM Colombia S.A.S. |  |  |
Changes in equity [abstract] |  |  |
Reserve for currency exchange conversion | $ (80) | $ (80) | $ (80)

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- Definition A component of equity representing exchange differences on translation of financial statements recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2022-03-24 -Paragraph 52 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2022-en-r&anchor=para_52_b&doctype=Standard -URIDate 2022-03-24 + Details
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