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Contingencies and restrictions - Tax Contingencies (Details) $ in Thousands |  |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 05, 2024 USD ($) | Jan. 19, 2024 USD ($) | Dec. 19, 2023 USD ($) | Jun. 30, 2023 USD ($) | Jul. 15, 2021 USD ($) | Mar. 24, 2017 USD ($) | Aug. 26, 2016 USD ($) | Dec. 31, 2023 USD ($) tax_claim | Dec. 31, 2022 USD ($)
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Mining assets |  |  |  |  |  |  |  | $ 154,715 | $ 60,284
SQM Salar | Non-current tax assets |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Mining assets |  |  |  |  |  |  |  | 59,500 | $ 127,100
Chilean Internal Revenue Service (IRS) | SQM Salar | Pending Litigation Claims |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Adjustment to tax expense (income) | $ 1,089,500 |  |  |  |  |  |  |  |
Tax Periods 2012 to 2023 | Chilean Internal Revenue Service (IRS) | SQM Salar |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  |  |  |  |  |  | $ 986,300 |
Number of tax claims | tax_claim |  |  |  |  |  |  |  | 7 |
Tax contingencies, dispute amount, settled |  |  |  |  |  |  |  | $ 201,300 |
Tax contingencies, dispute amount, pending |  |  |  |  |  |  |  | 785,000 |
Tax contingencies, assessed excess tax amount |  |  |  |  |  |  |  | 59,500 |
Tax contingencies, contested tax |  |  |  |  |  |  |  | 818,000 |
Interest and associated fines |  |  |  |  |  |  |  | $ 108,700 |
Tax Periods 2011 To 2022 | Chilean Internal Revenue Service (IRS) | SQM Salar | Pending Litigation Claims |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Adjustment to tax expense (income) | 926,700 |  |  |  |  |  |  |  |
Tax Period 2023 | Chilean Internal Revenue Service (IRS) |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  | $ 785,000 |  |  |  |  |  |
Tax contingencies, contested tax |  |  | 691,200 |  |  |  |  |  |
Interest and associated fines |  |  | 10,900 |  |  |  |  |  |
Tax Period 2023 | Chilean Internal Revenue Service (IRS) | SQM Salar | Pending Litigation Claims |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Adjustment to tax expense (income) | $ 162,700 |  |  |  |  |  |  |  |
Tax Period 2012 to 2014 | Third tax and customs court |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  |  |  |  |  | $ 17,800 |  |
Tax contingencies, contested tax |  |  |  |  |  |  | 11,500 |  |
Interest and associated fines |  |  |  |  |  |  | $ 6,300 |  |
Tax Period 2015 | Third tax and customs court |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  |  |  |  | $ 3,200 |  |  |
Tax Period 2016 | Third tax and customs court |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  |  |  |  | 5,500 |  |  |
Tax Period 2015 to 2016 | Third tax and customs court |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, assessed excess tax amount |  |  |  |  |  | 1,200 |  |  |
Tax contingencies, contested tax |  |  |  |  |  | 3,800 |  |  |
Interest and associated fines |  |  |  |  |  | $ 500 |  |  |
Tax Period 2017 to 2018 | Third tax and customs court |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  |  |  | $ 63,900 |  |  |  |
Tax contingencies, assessed excess tax amount |  |  |  |  | 17,600 |  |  |  |
Tax contingencies, contested tax |  |  |  |  | 30,200 |  |  |  |
Interest and associated fines |  |  |  |  | $ 16,100 |  |  |  |
Tax Period 2019 | First Tax And Customs Court |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  |  |  | $ 36,700 |  |  |  |  |
Tax contingencies, assessed excess tax amount |  |  |  | 9,700 |  |  |  |  |
Tax contingencies, contested tax |  |  |  | $ 27,000 |  |  |  |  |
Tax Periods 2020 And 2021 | First Tax And Customs Court | Entering into significant commitments or contingent liabilities |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  | $ 20,700 |  |  |  |  |  |  |
Tax contingencies, assessed excess tax amount |  | 5,600 |  |  |  |  |  |  |
Tax contingencies, contested tax |  | 15,100 |  |  |  |  |  |  |
Tax Period 2022 | Third tax and customs court | Entering into significant commitments or contingent liabilities |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Tax contingencies, dispute amount |  | 53,500 |  |  |  |  |  |  |
Tax contingencies, assessed excess tax amount |  | 14,400 |  |  |  |  |  |  |
Tax contingencies, contested tax |  | 36,100 |  |  |  |  |  |  |
Interest and associated fines |  | $ 3,000 |  |  |  |  |  |  |
Tax Period 2024 | Chilean Internal Revenue Service (IRS) | Tax contingent liability |  |  |  |  |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |  |  |  |  |
Law suits fines penalties and damages payable |  |  | $ 162,700 |  |  |  |  |  |

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