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Equity-accounted investees - Disclosures Regarding Interests in Associates (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Feb. 28, 2022 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) shares | Jun. 30, 2020 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Profit loss from sale of interests in associates |  |  |  |  |  | $ 643 |  |  |  |
Dividends received |  |  |  |  |  |  |  | $ 6,354 | $ 11,663 | $ 3,164
Kore Potash PLC |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage share reduction |  |  |  | 0.05% | 0.06% |  | 0.60% |  |  |
Transfer in equity of non controlling interest to other reserves |  |  |  | $ 3,739 |  |  |  |  |  |
Increase decrease in equity through share based payment transaction |  |  |  |  | $ 79 |  | $ 754 |  |  |
Proportion of ownership interest in associate |  |  |  | 20.15% | 20.20% |  | 19.07% |  |  |
Issue of equity |  |  | $ 13,931 |  |  |  |  |  |  |
Percentage of dilution of shares |  |  | 5.5 |  |  |  |  |  |  |
Profit loss from sale of interests in associates |  |  | $ 5,778 |  |  |  |  |  |  |
Kore Potash PLC | SQM | South Africa |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Investment in associate shares | shares |  |  |  |  |  | 260,598,591 |  |  |  |
Total shares in associates | shares |  |  |  |  |  | 584,753,846 |  |  |  |
Payment to acquire investment in associates |  |  |  |  |  | $ 1,679 |  |  |  |
Proportion of ownership interest in associate |  |  |  |  |  | 20.26% |  |  |  |
Plantacote N.V. | WSNPK | SQM | Netherlands |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Business combination total purchase consideration |  |  |  |  | $ 16,757 |  |  |  |  | 16,757
Business combination goodwill |  |  |  |  | $ 7,380 |  |  |  |  | 7,380
Doktor Tarsa Tarim Sanayi AS |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from sales of interests in associates |  |  |  |  |  | $ 33,066 |  |  |  |
Profit loss from sale of interests in associates |  |  |  |  |  | 11,408 |  |  |  |
SQM Eastmed Turkey |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from sales of interests in associates |  |  |  |  |  | 618 |  |  |  |
Profit loss from sale of interests in associates |  |  |  |  |  | $ 408 |  |  |  |
Abu Dhabi Fertilizer Industries WWL |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  |  |  |  |  |  | 37.00% |  |
Dividends received |  | $ 3,000 |  |  |  |  |  | $ 3,000 | 9,438 | $ 0
Dividend income |  | $ 523 |  |  |  |  |  |  |  |
Impairment loss recognised in profit or loss | $ 2,800 |  |  |  |  |  |  |  |  |
Related Party of Abu Dhabi Fertilizer Industries WWL |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Dividends receivable |  |  |  |  |  |  |  |  | 2,477 |
Related Party of Abu Dhabi Fertilizer Industries WWL | Internacional Technical and Trading Agenies Co. WLL |  |  |  |  |  |  |  |  |  |
Equity-accounted investees [Line Items] |  |  |  |  |  |  |  |  |  |
Dividends received |  |  |  |  |  |  |  |  | $ 9,438 |

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