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Identification and activities of the Company and Subsidiaries - Main Shareholders of the Company (Details) - shares | Dec. 31, 2022 | Dec. 31, 2021
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The Bank of New York Mellon, ADRs |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 22.60% | 23.67%
Inversiones TLC SpA |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 21.90% | 21.90%
Sociedad de Inversiones Pampa Calichera S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 15.66% | 15.75%
Potasios de Chile S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 6.36% | 6.36%
Banco de Chile via State Street |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 3.87% | 3.22%
AFP Habitat S.A. for Pension Fund C |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 3.33% | 1.02%
Inversiones Global Mining (Chile) Limitada |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 3.08% | 3.08%
Banco Santander via foreign investor accounts |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 3.06% | 3.10%
AFP Cuprum S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 2.29% |
Banco de Chile non-resident third party accounts |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 2.19% | 2.78%
AF Capital S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 1.98% |
AFP Provida S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage | 1.84% |
Inversiones la Esperanza de Chile Limitada |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage |  | 1.49%
Larrain Vial S.A. Corredora de Bolsa |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage |  | 1.32%
Bolsa De Comercio De Santiago Bolsa De Valores |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding, ownership percentage |  | 1.70%
Series A stock | The Bank of New York Mellon, ADRs |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 | 0
Number of shares outstanding, ownership percentage | 0.00% | 0.00%
Series A stock | Inversiones TLC SpA |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 62,556,568 | 62,556,568
Number of shares outstanding, ownership percentage | 43.80% | 43.80%
Series A stock | Sociedad de Inversiones Pampa Calichera S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 43,133,789 | 44,989,231
Number of shares outstanding, ownership percentage | 30.20% | 31.50%
Series A stock | Potasios de Chile S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 18,179,147 | 18,179,147
Number of shares outstanding, ownership percentage | 12.73% | 12.73%
Series A stock | Banco de Chile via State Street |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 79,265 | 23,428
Number of shares outstanding, ownership percentage | 0.06% | 0.02%
Series A stock | AFP Habitat S.A. for Pension Fund C |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 | 0
Number of shares outstanding, ownership percentage | 0.00% | 0.00%
Series A stock | Inversiones Global Mining (Chile) Limitada |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 8,798,539 | 8,798,539
Number of shares outstanding, ownership percentage | 6.16% | 6.16%
Series A stock | Banco Santander via foreign investor accounts |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 545,729 | 0
Number of shares outstanding, ownership percentage | 0.38% | 0.00%
Series A stock | AFP Cuprum S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 |
Number of shares outstanding, ownership percentage | 0.00% |
Series A stock | Banco de Chile non-resident third party accounts |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 62,829 | 445
Number of shares outstanding, ownership percentage | 0.04% | 0.00%
Series A stock | AF Capital S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 |
Number of shares outstanding, ownership percentage | 0.00% |
Series A stock | AFP Provida S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 |
Number of shares outstanding, ownership percentage | 0.00% |
Series A stock | Inversiones la Esperanza de Chile Limitada |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding |  | 4,246,226
Number of shares outstanding, ownership percentage |  | 2.97%
Series A stock | Larrain Vial S.A. Corredora de Bolsa |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding |  | 125,726
Number of shares outstanding, ownership percentage |  | 0.09%
Series A stock | Bolsa De Comercio De Santiago Bolsa De Valores |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding |  | 67,463
Number of shares outstanding, ownership percentage |  | 0.05%
Series B stock | The Bank of New York Mellon, ADRs |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 64,555,045 | 67,603,420
Number of shares outstanding, ownership percentage | 45.20% | 47.34%
Series B stock | Inversiones TLC SpA |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 | 0
Number of shares outstanding, ownership percentage | 0.00% | 0.00%
Series B stock | Sociedad de Inversiones Pampa Calichera S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 1,611,227 | 0
Number of shares outstanding, ownership percentage | 1.13% | 0.00%
Series B stock | Potasios de Chile S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 | 0
Number of shares outstanding, ownership percentage | 0.00% | 0.00%
Series B stock | Banco de Chile via State Street |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 10,979,388 | 9,178,379
Number of shares outstanding, ownership percentage | 7.69% | 6.43%
Series B stock | AFP Habitat S.A. for Pension Fund C |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 9,504,885 | 2,914,292
Number of shares outstanding, ownership percentage | 6.66% | 2.04%
Series B stock | Inversiones Global Mining (Chile) Limitada |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 0 | 0
Number of shares outstanding, ownership percentage | 0.00% | 0.00%
Series B stock | Banco Santander via foreign investor accounts |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 8,181,775 | 8,856,091
Number of shares outstanding, ownership percentage | 5.73% | 6.20%
Series B stock | AFP Cuprum S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 6,535,039 |
Number of shares outstanding, ownership percentage | 4.58% |
Series B stock | Banco de Chile non-resident third party accounts |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 6,181,476 | 7,939,865
Number of shares outstanding, ownership percentage | 4.33% | 5.56%
Series B stock | AF Capital S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 5,652,982 |
Number of shares outstanding, ownership percentage | 3.96% |
Series B stock | AFP Provida S.A. |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding | 5,263,361 |
Number of shares outstanding, ownership percentage | 3.69% |
Series B stock | Inversiones la Esperanza de Chile Limitada |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding |  | 0
Number of shares outstanding, ownership percentage |  | 0.00%
Series B stock | Larrain Vial S.A. Corredora de Bolsa |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding |  | 3,653,614
Number of shares outstanding, ownership percentage |  | 2.56%
Series B stock | Bolsa De Comercio De Santiago Bolsa De Valores |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Number of shares outstanding |  | 4,795,310
Number of shares outstanding, ownership percentage |  | 3.36%

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