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Equity-accounted investees (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Equity-accounted investees [Abstract] |
Disclosure of associates [text block] | As of December 31, 2020, and December 31, 2019, in accordance with criteria established in Note 2:
|  | Equity-accounted investees |  |  | Share in profit (loss) of associates and joint ventures accounted for using the equity method for the period ended |  |  | Share in profit (loss) of associates and joint ventures accounted for using the equity method for the period ended |  |  | Share in total other comprehensive income of associates accounted for using the equity method for the period ended |
Associate |  | As of December 31, 2020 (**) |  |  | As of December 31, 2019 (**) |  |  | As of December 31, 2018 (**) |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |  |  | As of December 31, 2018 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |  |  | As of December 31, 2018 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |  |  | As of December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Abu Dhabi Fertilizer Industries WWL |  |  | 11,505 |  |  |  | 11,609 |  |  |  | 10,821 |  |  |  | (156 | ) |  |  | 634 |  |  |  | 596 |  |  |  | - |  |  |  | 1 |  |  |  | - |  |  |  | (156 | ) |  |  | 635 |  |  |  | 596 |
Doktor Tarsa Tarim Sanayi AS (*) |  |  | - |  |  |  | 26,001 |  |  |  | 21,582 |  |  |  | 4,031 |  |  |  | 3,912 |  |  |  | 241 |  |  |  | - |  |  |  | 198 |  |  |  | 489 |  |  |  | 4,031 |  |  |  | 4,110 |  |  |  | 730 |
Ajay North America |  |  | 14,468 |  |  |  | 14,669 |  |  |  | 14,951 |  |  |  | 2,191 |  |  |  | 2,871 |  |  |  | 3,728 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,191 |  |  |  | 2,871 |  |  |  | 3,728 |
Ajay Europe SARL |  |  | 7,875 |  |  |  | 7,451 |  |  |  | 7,845 |  |  |  | 1,029 |  |  |  | 1,165 |  |  |  | 1,373 |  |  |  | 756 |  |  |  | (179 | ) |  |  | (439 | ) |  |  | 1,785 |  |  |  | 986 |  |  |  | 934 |
Charlee SQM Thailand Co Ltd |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 316 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 316 |
SQM Eastmed Turkey (*) |  |  | - |  |  |  | 623 |  |  |  | 310 |  |  |  | 247 |  |  |  | 354 |  |  |  | 370 |  |  |  | - |  |  |  | (42 | ) |  |  | (21 | ) |  |  | 247 |  |  |  | 312 |  |  |  | 349 |
Kore Potash PLC |  |  | 26,175 |  |  |  | 24,739 |  |  |  | 20,467 |  |  |  | (224 | ) |  |  | (534 | ) |  |  | (1,543 | ) |  |  | (374 | ) |  |  | (549 | ) |  |  | (1,206 | ) |  |  | (598 | ) |  |  | (1.083 | ) |  |  | (2,749 | )
Total |  |  | 60,023 |  |  |  | 85,092 |  |  |  | 75,976 |  |  |  | 7,118 |  |  |  | 8,402 |  |  |  | 5,081 |  |  |  | 382 |  |  |  | (571 | ) |  |  | (1.177 | ) |  |  | 7,500 |  |  |  | 7,831 |  |  |  | 3,904 |
(*) As of December 31, 2020, these investments no longer form part of the group. See Note 8.4 (a). (**) These investments include adjustments for unrealized results.
Disclosure of interests in associates [text block] |
|  |  |  |  |  |  |  |  |  |  | Dividends received for the period ending |
Associate |  | Description of the nature of the relationship |  | Domicile |  | Country of incorporation |  | Share of ownership in associates |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |  |  | As of December 31, 2018 |
|  |  |  |  |  |  |  |  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Abu Dhabi Fertilizer Industries WWL |  | Distribution and commercialization of specialty plant nutrients in the Middle East. |  | PO Box 71871, Abu Dhabi |  | United Arab Emirates |  |  | 37 | % |  |  | - |  |  |  | - |  |  |  | 6,632 |
Ajay North America |  | Production and distribution of iodine and iodine derivatives. |  | 1400 Industry RD Power Springs GA 30129 |  | United States |  |  | 49 | % |  |  | 1,967 |  |  |  | 2,796 |  |  |  | 2,807 |
Ajay Europe SARL |  | Production and distribution of iodine and iodine derivatives. |  | Z.I. du Grand Verger BP 227 53602 Evron Cedex |  | France |  |  | 50 | % |  |  | 1,197 |  |  |  | 1,055 |  |  |  | 811 |
Charlee SQM Thailand Co Ltd |  | Production and distribution of iodine and iodine derivatives. |  | 31 Soi 138 (Meesuk) LLapdrawrd, Bangkapi, 10240 Bangkok |  | Thailand |  |  | 40 | % |  |  | - |  |  |  | - |  |  |  | 362 |
SQM Eastmed Turkey |  | Production and distribution of iodine and iodine derivatives. |  | Organize Sanayi Bolgesi, Ikinci Kisim, 22 cadde TR07100 Antalya |  | Turkey |  |  | 50 | % |  |  | - |  |  |  | - |  |  |  | - |
Kore Potash Ltd |  | Prospecting, exploration and mining development |  | L 3 88 William ST Perth, was 6000 |  | United Kingdom |  |  | 20.20 | % |  |  | - |  |  |  | - |  |  |  | - |
Total |  |  |  |  |  |  |  |  |  |  |  |  | 3,164 |  |  |  | 3,851 |  |  |  | 10,612 |
The companies described in the table below are related parties of the following associates: (1) Doktor Tarsa Tarim Sanayi AS (2) Terra Tarsa B.V. (3) Abu Dhabi Fertilizer Industries WWL
|  |  |  |  |  |  |  |  |  |  | Dividends received for the period ending |
Associate |  | Description of the nature of the relationship |  | Domicile |  | Country of incorporation |  | Share of ownership in associates (*) |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |  |  | As of December 31, 2018 |
|  |  |  |  |  |  |  |  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Terra Tarsa Ukraine LLC (2) |  | Distribution and trading of specialty plant nutrients. |  | 74800 Ukraine, Kakhovka, 4 Yuzhnaya Str. |  | Ukraine |  |  | 100 | % |  |  | - |  |  |  | - |  |  |  | - |
Terra Tarsa BV (1) |  | Distribution and trading of specialty plant nutrients, in the Middle East. |  | Herikerbergweg 238, Luna Arena, 1101CM Amsterdam PO Box 23393, 1100DW Amsterdam Zuidoost |  | Holland |  |  | 50 | % |  |  | - |  |  |  | - |  |  |  | - |
Plantacote NV (1) |  | Sale of CRF and production and sales of WSNPK. |  | Houtdok-Noordkaai 25a, 2030 Antwerpen, Belgium |  | Belgium |  |  | 100 | % |  |  | - |  |  |  | - |  |  |  | - |
Doctochem Tarim Sanayai Ticaret LTD (1) |  | Production, distribution and trading of specialty plant nutrition. |  | Eski Büyükdere Cad No: 7 GIZ 2000 Plaza K:17 D:67-68 Maslak Sariyer Ístambul. |  | Turkey |  |  | 100 | % |  |  | - |  |  |  | - |  |  |  | - |
Terra Tarsa Don LLC (2) |  | Distribution and sale of specialty fertilizers. |  | Zorge Street, house 17, 344090, Rostov-on-Don |  | Russian Federation |  |  | 100 | % |  |  | - |  |  |  | - |  |  |  | - |
Doktolab Tarim Arastirma San. (1) |  | Laboratory services. |  | 27. Cd. No:2, 07190 Aosb 2. Kısım/Döşemealtı, Antalya, Turkey |  | Turkey |  |  | 100 | % |  |  | - |  |  |  | - |  |  |  | - |
International Technical and Trading Agencies Co WLL (3) |  | Distribution and trading of specialty plant nutrients, in the Middle East. |  | P.O Box: 950918 Amman 11195 |  | Jordan |  |  | 50 | % |  |  | - |  |  |  | - |  |  |  | - |
Total |  |  |  |  |  |  |  |  |  |  |  |  | - |  |  |  | - |  |  |  | - |
(*) This percentage does not consider the shareholdings of the holders of these subsidiaries.
Disclosure of Detailed Informatin on Summarized Financial Information of Associates Explanatory [Text Block] |
|  | As of December 31, 2020 |  |  | for the period ended as of December 31, 2020 |
|  | Assets |  |  | Liabilities |  |  |  |  |  |  |  |  | Other |  |  |  |
Associate |  | Current |  |  | Non-current |  |  | Current |  |  | Non-current |  |  | Revenue |  |  | Gain (loss) |  |  | comprehensive Income |  |  | Comprehensive income |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Abu Dhabi Fertilizer Industries WWL |  |  | 29,313 |  |  |  | 8,586 |  |  |  | 6,706 |  |  |  | 101 |  |  |  | 6,641 |  |  |  | (420 | ) |  |  | - |  |  |  | (420 | )
Ajay North America |  |  | 18,513 |  |  |  | 15,749 |  |  |  | 4,737 |  |  |  | - |  |  |  | 42,920 |  |  |  | 4,471 |  |  |  | - |  |  |  | 4,471 |
Ajay Europe SARL |  |  | 22,032 |  |  |  | 1,493 |  |  |  | 7,773 |  |  |  | - |  |  |  | 41,950 |  |  |  | 2,058 |  |  |  | 1,736 |  |  |  | 3,794 |
Kore Potash PLC |  |  | 5,691 |  |  |  | 124,112 |  |  |  | 786 |  |  |  | - |  |  |  | - |  |  |  | (3,233 | ) |  |  | 486 |  |  |  | (2,747 | )
Total |  |  | 75,549 |  |  |  | 149,940 |  |  |  | 20,002 |  |  |  | 101 |  |  |  | 91,511 |  |  |  | 2,876 |  |  |  | 2,222 |  |  |  | 5,098 |
|  | As of December 31, 2019 |  |  | for the period ended as of December 31, 2019 |
|  | Assets |  |  | Liabilities |  |  |  |  |  |  |  |  | Other |  |  |  |
Associate |  | Current |  |  | Non-current |  |  | Current |  |  | Non-current |  |  | Revenue |  |  | Gain (loss) |  |  | comprehensive Income |  |  | Comprehensive income |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Abu Dhabi Fertilizer Industries WWL |  |  | 28,543 |  |  |  | 9,971 |  |  |  | 7,133 |  |  |  | - |  |  |  | 31,588 |  |  |  | 1,713 |  |  |  | 4 |  |  |  | 1,717 |
Doktor Tarsa Tarim Sanayi AS |  |  | 97,797 |  |  |  | 15,196 |  |  |  | 22,420 |  |  |  | 38,522 |  |  |  | 93,768 |  |  |  | 7,824 |  |  |  | 396 |  |  |  | 8,220 |
Ajay North America |  |  | 19,748 |  |  |  | 13,250 |  |  |  | 3,061 |  |  |  | - |  |  |  | 38,833 |  |  |  | 5,860 |  |  |  | - |  |  |  | 5,860 |
Ajay Europe SARL |  |  | 19,589 |  |  |  | 1,456 |  |  |  | 6,144 |  |  |  | - |  |  |  | 35,709 |  |  |  | 2,329 |  |  |  | (358 | ) |  |  | 1,971 |
SQM Eastmed Turkey |  |  | 2,718 |  |  |  | 1,833 |  |  |  | 2,600 |  |  |  | 704 |  |  |  | 3,086 |  |  |  | 709 |  |  |  | (84 | ) |  |  | 625 |
Kore Potash PLC |  |  | 7,938 |  |  |  | 119,362 |  |  |  | 2,214 |  |  |  | - |  |  |  | - |  |  |  | (2,716 | ) |  |  | (2,791 | ) |  |  | (5,507 | )
Total |  |  | 176,333 |  |  |  | 161,068 |  |  |  | 43,572 |  |  |  | 39,226 |  |  |  | 202,984 |  |  |  | 15,719 |  |  |  | (2,833 | ) |  |  | 12,886 |
|  | As of December 31, 2018 |  |  | for the period ended as of December 31, 2018 |
|  | Assets |  |  | Liabilities |  |  |  |  |  |  |  |  | Other |  |  |  |
Associate |  | Current |  |  | Non-current |  |  | Current |  |  | Non-current |  |  | Revenue |  |  | Gain (loss) |  |  | comprehensive income |  |  | Comprehensive income |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Abu Dhabi Fertilizer Industries WWL |  |  | 23,496 |  |  |  | 11,444 |  |  |  | 5,695 |  |  |  | - |  |  |  | 33,098 |  |  |  | 1,611 |  |  |  | (1 | ) |  |  | 1,610 |
Doktor Tarsa Tarim Sanayi AS |  |  | 66,498 |  |  |  | 12,242 |  |  |  | 27,067 |  |  |  | 8,509 |  |  |  | 74,144 |  |  |  | 481 |  |  |  | 978 |  |  |  | 1,459 |
Ajay North America |  |  | 21,644 |  |  |  | 12,409 |  |  |  | 3,542 |  |  |  | - |  |  |  | 40,290 |  |  |  | 7,608 |  |  |  | - |  |  |  | 7,608 |
Ajay Europe SARL |  |  | 21,219 |  |  |  | 1,214 |  |  |  | 6,743 |  |  |  | - |  |  |  | 36,337 |  |  |  | 2,747 |  |  |  | (878 | ) |  |  | 1,869 |
SQM Eastmed Turkey |  |  | 1,724 |  |  |  | 2,160 |  |  |  | 1,829 |  |  |  | 1,434 |  |  |  | 3,192 |  |  |  | 740 |  |  |  | (42 | ) |  |  | 698 |
Kore Potash PLC |  |  | 6,659 |  |  |  | 148,426 |  |  |  | 2,180 |  |  |  | - |  |  |  | - |  |  |  | (8,198 | ) |  |  | (6,882 | ) |  |  | (15,080 | )
Total |  |  | 141,240 |  |  |  | 187,895 |  |  |  | 47,056 |  |  |  | 9,943 |  |  |  | 187,061 |  |  |  | 4,989 |  |  |  | (6,825 | ) |  |  | (1,836 | )

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