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Effect of fluctuations in foreign currency exchange rates (Details 1) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | $ (7,913) | $ (11,569) | $ (25,745)
Comercial Hydro S.A. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 1,004 | 1,004 | 1,004
SQMC Internacional Ltda. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (9) | (9) | (9)
Proinsa Ltda. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (10) | (10) | (10)
Comercial Agrorama Ltda. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 155 | (19) | 33
Isapre Norte Grande Ltda. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (121) | (14) | (44)
Almacenes y Depositos Ltda. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 305 | 211 | 142
Sacal S.A. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (3) | (3) | (3)
Sociedad Prestadora de Servicios de Salud Cruz del Norte SA [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (36) | (13) | (19)
Agrorama S.A. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 628 | 92 | 231
Doktor Tarsa Tarim Sanayi AS [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | (13,811)
SQM Vitas Fzco. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (4,165) | (3,736) | (2,267)
Doctochem Tarim Sanayi LTD [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | 7
SQM Eastmed Turkey [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | (155)
Ajay Europe [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (1,413) | (693) | (1,449)
Coromandel SQM India [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | (431)
SQM Italia SRL [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | (236)
SQM Oceania Pty Limited [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (579) | (579) | (634)
SQM Indonesia S.A. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (124) | (124) | (124)
Abu Dhabi Fertilizers Industries WWL [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 372 | 372 | 372
SQM Holland B.V. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 99 | 99 | (197)
SQM Thailand Limited [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (68) | (68) | (68)
SQM Europe N.V. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (1,983) | (1,983) | (1,983)
SQM Australia Pty Ltd [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (1,732) | (4,052) | (4,035)
Pavoni C Spa [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | (153) | 164 | (185)
Terra Tarsa B.V.. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | 116
Plantacote N.V [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | (16)
Doktolab Tarim Arastima San [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | 0 | (54)
Kore Potash PLC [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | 0 | (2,128) | (1,754)
SQM Colombia S.A.S. [Member] |  |  |
Changes in equity [abstract] |  |  |
Reserve of exchange differences on translation | $ (80) | $ (80) | $ (166)

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