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Disclosures on equity (Details 8) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Profit (loss), attributable to non-controlling interests | $ 6,751 | $ 3,841 | $ 2,488
Equity, noncontrolling interests | 34,451 | 39,493 |
Dividends paid to non-controlling interests | $ 12,408 | 10,118 |
SQM Potasio S.A. [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 0.00% |  |
Profit (loss), attributable to non-controlling interests | $ 0 | 0 |
Equity, noncontrolling interests | 0 | 0 |
Dividends paid to non-controlling interests | $ 0 | 0 |
Ajay SQM Chile S.A. [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 49.00% |  |
Profit (loss), attributable to non-controlling interests | $ 769 | 910 |
Equity, noncontrolling interests | 8,382 | 8,189 |
Dividends paid to non-controlling interests | $ 577 | 1,238 |
Soquimich Comercial S.A. [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 39.36168% |  |
Profit (loss), attributable to non-controlling interests | $ 5,926 | 2,976 |
Equity, noncontrolling interests | 26,665 | 32,078 |
Dividends paid to non-controlling interests | $ 11,831 | 8,880 |
Comercial Agrorama Ltda. [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 30.00% |  |
Profit (loss), attributable to non-controlling interests | $ 56 | (45) |
Equity, noncontrolling interests | (596) | (775) |
Dividends paid to non-controlling interests | $ 0 | 0 |
SQM Indonesia S.A. [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 20.00% |  |
Profit (loss), attributable to non-controlling interests | $ 0 | 0 |
Equity, noncontrolling interests | 0 | 0 |
Dividends paid to non-controlling interests | $ 0 | 0 |
Agrorama S.A. [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 0.00% |  |
Profit (loss), attributable to non-controlling interests | $ 0 | 0 |
Equity, noncontrolling interests | 0 | 0 |
Dividends paid to non-controlling interests | $ 0 | 0 |
SQM Thailand Limited [Member] |  |  |
Disclosure Of Noncontrolling interests Explanatory [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 0.004% |  |
Profit (loss), attributable to non-controlling interests | $ 0 | 0 |
Equity, noncontrolling interests | 0 | 1 |
Dividends paid to non-controlling interests | $ 0 | $ 0 |

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