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Identification and Activities of the Company and Subsidiaries (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of Identification and Activities of the Company and Subsidiaries [Abstract] |
Disclosure of information about employees [text block] | As of December 31, 2021, and 2020, the workforce was as follows:
|  | As of December 31, 2021 |  |  | As of December 31, 2020 |
Employees |  | SQM S.A. |  |  | Other subsidiaries |  |  | Total |  |  | SQM S.A. |  |  | Other subsidiaries |  |  | Total |
Executives |  |  | 33 |  |  |  | 103 |  |  |  | 136 |  |  |  | 33 |  |  |  | 93 |  |  |  | 126 |
Professionals |  |  | 117 |  |  |  | 1,639 |  |  |  | 1,756 |  |  |  | 108 |  |  |  | 1,696 |  |  |  | 1,804 |
Technicians and operators |  |  | 275 |  |  |  | 3,914 |  |  |  | 4,189 |  |  |  | 267 |  |  |  | 3,310 |  |  |  | 3,577 |
Overall total |  |  | 425 |  |  |  | 5,656 |  |  |  | 6,081 |  |  |  | 408 |  |  |  | 5,099 |  |  |  | 5,507 |
|  | As of December 31, 2021 |  |  | As of December 31, 2020 |
Place of work |  | SQM S.A. |  |  | Other subsidiaries |  |  | Total |  |  | SQM S.A. |  |  | Other subsidiaries |  |  | Total |
In Chile |  |  | 425 |  |  |  | 5,246 |  |  |  | 5,671 |  |  |  | 408 |  |  |  | 4,672 |  |  |  | 5,080 |
Outside Chile |  |  | - |  |  |  | 410 |  |  |  | 410 |  |  |  | - |  |  |  | 427 |  |  |  | 427 |
Overall total |  |  | 425 |  |  |  | 5,656 |  |  |  | 6,081 |  |  |  | 408 |  |  |  | 5,099 |  |  |  | 5,507 |
Schedule of Shareholders stock and Ownership Percentage [Text Block] | The following information is derived from our registry and reports managed by the DCV and informed to the CMF and the Chilean Stock Exchange:
Shareholders as of December 31, 2021 |  | No. of Series A |  |  | % of Series A shares |  |  | No. of Series B |  |  | % of Series B shares |  |  | % of total shares |
The Bank of New York Mellon, ADRs |  |  | - |  |  |  | - |  |  |  | 67,603,420 |  |  |  | 47.34 | % |  |  | 23.67 | %
Inversiones TLC SpA (1) |  |  | 62,556,568 |  |  |  | 43.80 | % |  |  | - |  |  |  | - |  |  |  | 21.90 | %
Sociedad de Inversiones Pampa Calichera S.A. (2) |  |  | 44,989,231 |  |  |  | 31.50 | % |  |  | - |  |  |  | - |  |  |  | 15.75 | %
Potasios de Chile S.A. |  |  | 18,179,147 |  |  |  | 12.73 | % |  |  | - |  |  |  | - |  |  |  | 6.36 | %
Banco de Chile via State Street |  |  | 23,428 |  |  |  | 0.02 | % |  |  | 9,178,379 |  |  |  | 6.43 | % |  |  | 3.22 | %
Banco Santander via foreign investor accounts |  |  | - |  |  |  | - |  |  |  | 8,856,091 |  |  |  | 6.20 | % |  |  | 3.10 | %
Inv. Global Mining (Chile) Ltda. |  |  | 8,798,539 |  |  |  | 6.16 | % |  |  | - |  |  |  | - |  |  |  | 3.08 | %
Banco de Chile non-resident third party accounts |  |  | 445 |  |  |  | - |  |  |  | 7,939,865 |  |  |  | 5.56 | % |  |  | 2.78 | %
Banco de Chile via Citi NA New York Clients |  |  | 67,463 |  |  |  | 0.05 | % |  |  | 4,795,310 |  |  |  | 3.36 | % |  |  | 1.70 | %
Inversiones la Esperanza de Chile Limitada |  |  | 4,246,226 |  |  |  | 2.97 | % |  |  | - |  |  |  | - |  |  |  | 1.49 | %
Larraín Vial S.A. Corredora de Bolsa |  |  | 125,726 |  |  |  | 0.09 | % |  |  | 3,653,614 |  |  |  | 2.56 | % |  |  | 1.32 | %
AFP Habitat S.A. for Pension Fund C |  |  | - |  |  |  | - |  |  |  | 2,914,292 |  |  |  | 2.04 | % |  |  | 1.02 | %
Shareholders as of December 31, 2020 |  | No. of Series A |  |  | % of Series A shares |  |  | No. of Series B |  |  | % of Series B shares |  |  | % of total shares |
Inversiones TLC SpA (1) |  |  | 62,556,568 |  |  |  | 43.80 | % |  |  | - |  |  |  | - |  |  |  | 23.77 | %
The Bank of New York Mellon, ADRs |  |  | - |  |  |  | - |  |  |  | 50,792,452 |  |  |  | 42.19 | % |  |  | 19.30 | %
Sociedad de Inversiones Pampa Calichera S.A. (2) |  |  | 44,894,152 |  |  |  | 31.43 | % |  |  | 922,971 |  |  |  | 0.77 | % |  |  | 17.41 | %
Potasios de Chile S.A. |  |  | 18,179,147 |  |  |  | 12.73 | % |  |  | - |  |  |  | - |  |  |  | 6.91 | %
Inversiones Global Mining (Chile) Limitada |  |  | 8,798,539 |  |  |  | 6.16 | % |  |  | - |  |  |  | - |  |  |  | 3.34 | %
Euroamerica C de B S. A. |  |  | 1,418 |  |  |  | - |  |  |  | 8,788,517 |  |  |  | 7.30 | % |  |  | 3.34 | %
Banco Santander via foreign investor accounts |  |  | - |  |  |  | - |  |  |  | 7,294,827 |  |  |  | 6.06 | % |  |  | 2.77 | %
Banco de Chile via State Street |  |  | - |  |  |  | - |  |  |  | 6,971,782 |  |  |  | 5.79 | % |  |  | 2.65 | %
Banco de Chile non-resident third party accounts |  |  | - |  |  |  | - |  |  |  | 6,129,339 |  |  |  | 5.09 | % |  |  | 2.33 | %
Inversiones la Esperanza de Chile Limitada |  |  | 4,147,263 |  |  |  | 2.90 | % |  |  | 46,500 |  |  |  | 0.04 | % |  |  | 1.59 | %
Banchile Corredora de Bolsa S. A. |  |  | 459,202 |  |  |  | 0.32 | % |  |  | 2,426,758 |  |  |  | 2.02 | % |  |  | 1.10 | %
Banco de Chile on behalf of Citibank NA New York customers |  |  | 177,463 |  |  |  | 0.12 | % |  |  | 1,732,249 |  |  |  | 1.44 | % |  |  | 0.73 | %

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