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v3.23.1

Income tax and deferred taxes - Narrative (Details) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 27.00% | 27.00% | 27.00%
Prescriptive period for review legal deadline | 3 |  |
Prescriptive period extended for review legal deadline | 6 |  |
Mining royalties operation |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 9.60% |  |
Caliche extraction operation |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 9.09% |  |
United States |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Prescriptive period for review legal deadline | 3 |  |
Prescriptive period extended for review legal deadline | 6 |  |
United States | Maximum |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 3.51% | 3.51% |
United States | Minimum |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 21.00% | 21.00% |
Mexico |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 30.00% | 30.00% |
Prescriptive period for review legal deadline | 5 |  |
Spain |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Prescriptive period for review legal deadline | 4 |  |
Belgium |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Prescriptive period for review legal deadline | 3 |  |
Prescriptive period extended for review legal deadline | 5 |  |
South Africa |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 28.00% | 28.00% |
Prescriptive period for review legal deadline | 3 |  |
Prescriptive period extended for review legal deadline | 5 |  |
China |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Prescriptive period for review legal deadline | 3 |  |
Prescriptive period extended for review legal deadline | 5 |  |
China | Maximum |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 12.00% | 12.00% |
China | Minimum |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 25.00% | 25.00% |
Korea |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Applicable tax rate | 25.00% | 25.00% |
Prescriptive period for review legal deadline | 5 |  |
Prescriptive period extended for review legal deadline | 7 |  |
Korea | Maximum |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Prescriptive period extended for review legal deadline failure to file tax return | 10 years |  |
Prescriptive period extended for review legal deadline, tax evasion or fraud | 15 years |  |
Korea | Minimum |  |  |
Disclosure of Income tax and deferred taxes [Line Items] |  |  |
Prescriptive period extended for review legal deadline failure to file tax return | 5 years |  |
Prescriptive period extended for review legal deadline, tax evasion or fraud | 10 years |  |

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