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Disclosures on equity - Other Reserves (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves $ 11,663 $ 13,103 $ 16,318
SQM Iberian S.A.      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 9,464 9,464 9,464
SQM Europe NV      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 1,957 1,957 1,957
Soquimich European Holding B.V.      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 828 828 828
Abu Dhabi Fertilizer Industries WWL      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 0 455 455
Kore Potash PLC      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 0 0 3,414
Soquimich Comercial S.A.      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves (401) 0 0
SQM Vitas Fzco.      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 85 (38) (244)
Pavoni & C. Spa      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 7 7 0
SQM Iberian S.A. One      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves (1,677) (1,677) (1,677)
Orcoma Estudios SPA      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 2,121 2,121 2,121
SQM Industrial S.A.      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves 0 707 0
Others      
Disclosure of Disclosures on equity [Line Items]      
Total Other reserves $ (721) $ (721) $ 0