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Contingencies and restrictions (Details) - USD ($) $ in Thousands |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 04, 2022 | Sep. 29, 2022 | Jan. 27, 2022 | Jul. 15, 2021 | Jan. 07, 2021 | Oct. 31, 2020 | Apr. 14, 2020 | Mar. 24, 2017 | Aug. 26, 2016 | Jun. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Aug. 31, 2004 | Aug. 31, 1996
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, domicile of litigation |  |  |  |  |  |  |  |  |  |  | 19th Civil Court of Santiago |  |  |
Guarantee obligations |  |  |  |  |  |  |  |  |  |  | $ 717 |  |  |
Environmental loss contingencies component amount |  |  |  |  |  | $ 9,000 |  |  |  |  |  |  |  |
Mining assets |  |  |  |  |  |  |  |  |  |  | 60,284 | $ 38,241 |  |
Tax contingencies, estimates possible amount |  | $ 745,300 |  |  |  |  |  |  |  |  |  |  |  |
Third tax and customs court | Tax Period 2012 to 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Contingencies, Dispute Amount |  |  |  |  |  |  |  |  | $ 17,800 |  |  |  |  |
Tax contingencies, contested tax |  |  |  |  |  |  |  |  | 11,500 |  |  |  |  |
Interest and associated fines |  |  |  |  |  |  |  |  | $ 6,300 |  |  |  |  |
Third tax and customs court | Tax Period 2015 to 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Contingencies, Dispute Amount |  |  |  |  |  |  |  | $ 8,600 |  |  |  |  |  |
Tax contingencies, contested tax |  |  |  |  |  |  |  | 6,900 |  |  |  |  |  |
Interest and associated fines |  |  |  |  |  |  |  | 400 |  |  |  |  |  |
Tax contingencies, assessed excess tax amount |  |  |  |  |  |  |  | $ 1,300 |  |  |  |  |  |
Third tax and customs court | Tax Period 2017 to 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Contingencies, Dispute Amount |  |  |  | $ 63,900 |  |  |  |  |  |  |  |  |  |
Tax contingencies, contested tax |  |  |  | 30,200 |  |  |  |  |  |  |  |  |  |
Interest and associated fines |  |  |  | 16,100 |  |  |  |  |  |  |  |  |  |
Tax contingencies, assessed excess tax amount |  |  |  | $ 17,600 |  |  |  |  |  |  |  |  |  |
General Water Bureau |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value |  |  |  |  |  |  | $ 4,180 |  |  |  |  |  |  |
Ocaa y Vega Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value |  |  |  |  | $ 377 |  |  |  |  |  |  |  |  |
Soquimich Comercial S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, damages owed value |  |  |  |  |  |  |  |  |  |  | 1,050 |  |  |
SQM Salar |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value |  |  | $ 48,100 |  |  |  |  |  |  |  |  |  |  |
Litigation charges |  |  |  |  |  |  |  |  |  |  |  | $ 48,100 |  |
SQM Salar | Tax Period 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Contingencies, Dispute Amount |  | 36,800 |  |  |  |  |  |  |  |  |  |  |  |
Tax contingencies, assessed excess tax amount |  | $ 9,700 |  |  |  |  |  |  |  |  |  |  |  |
SQM Salar | Non-current tax assets |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mining assets |  |  |  |  |  |  |  |  |  |  | $ 127,100 |  |  |
Lawsuit three |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  |  |  |  |  |  |  |  |  |  | city of Pomona in the state of California |  |  |
Lawsuits, name of defendant |  |  |  |  |  |  |  |  |  |  | SQM NA |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | December 2010 |  |  |
Lawsuits, domicile of litigation |  |  |  |  |  |  |  |  |  |  | US District Court for the Central District of California |  |  |
Lawsuits, allegations |  |  |  |  |  |  |  |  |  |  | payment of expenses and other values related to treatment of groundwater to make it apt for consumption, which involved the extraction of perchlorate in this water, which allegedly came from Chilean fertilizers |  |  |
Lawsuit four |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  |  |  |  |  |  |  |  |  |  | the city of Lindsay in California, United States |  |  |
Lawsuits, name of defendant |  |  |  |  |  |  |  |  |  |  | SQM NA |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | December 2010 |  |  |
Lawsuits, domicile of litigation |  |  |  |  |  |  |  |  |  |  | US District Court for the Central District of California |  |  |
Lawsuits, allegations |  |  |  |  |  |  |  |  |  |  | payment of expenses and other values related to treatment of groundwater to make it apt for consumption, which involved the extraction of perchlorate in this water, which allegedly came from Chilean fertilizers |  |  |
Lawsuit five |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of defendant |  |  |  |  |  |  |  |  |  |  | SQM Nitratos |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | May 2014 |  |  |
Lawsuits, domicile of litigation |  |  |  |  |  |  |  |  |  |  | 18th Civil Court of Santiago |  |  |
Lawsuits, allegations |  |  |  |  |  |  |  |  |  |  | for its alleged extracontractual liability derived from an explosion occurring in 2010 in the vicinity of the town of Baquedano, which caused the death of six workers |  |  |
Lawsuits, litigation status |  |  |  |  |  |  |  |  |  |  | On May 7, 2019, the 18th Civil Court of Santiago dismissed the claim. The case currently is in the Santiago Court of Appeals, which will make a determination on the motion for appeal and cassation brought about on behalf of the plaintiff. |  |  |
Lawsuits, nominal value |  |  |  |  |  |  |  |  |  |  | $ 1,200 |  |  |
Lawsuit six |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  |  |  |  |  |  |  |  |  |  | Transportes Buen Destino S.A. |  |  |
Lawsuits, name of defendant |  |  |  |  |  |  |  |  |  |  | SQM Salar |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | January 2018 |  |  |
Lawsuits, domicile of litigation |  |  |  |  |  |  |  |  |  |  | arbitration claim under CAM rules |  |  |
Lawsuits, allegations |  |  |  |  |  |  |  |  |  |  | controversies resulting from the execution of transport contracts for lithium brine and transport of salts |  |  |
Lawsuits, litigation status |  |  |  |  |  |  |  |  |  |  | currently in the evidence stage |  |  |
Lawsuits, nominal value |  |  |  |  |  |  |  |  |  |  | $ 3,000 |  |  |
Lawsuit seven |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  |  |  |  |  |  |  |  |  |  | representatives Claudia Nathalie Mix Jiménez, Gael Fernanda Yeomans Araya, Camila Ruzlay Rojas Valderrama |  |  |
Lawsuits, name of defendant |  |  |  |  |  |  |  |  |  |  | Corfo |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | September 2018 |  |  |
Lawsuits, allegations |  |  |  |  |  |  |  |  |  |  | Salar de Atacama Project Contract signed between Corfo and SQM Salar. |  |  |
Lawsuits, litigation status |  |  |  |  |  |  |  |  |  |  | discussion stage |  |  |
Lawsuit eight |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  |  |  |  |  |  |  |  |  |  | The Company and FPC Ingeniería y Construcción SpA |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | May 2019 |  |  |
Lawsuits, allegations |  |  |  |  |  |  |  |  |  |  | alleged extracontractual liability derived from the traffic accident occurring |  |  |
Lawsuits, litigation status |  |  |  |  |  |  |  |  |  |  | on March 5, 2018, involving the overturn of a truck owned by FPC and the subsequent death of its two occupants, both employees of FPC. The four children of one of the deceased workers are the plaintiffs in this case and are seeking compensation for moral damages. |  |  |
Lawsuits, nominal value |  |  |  |  |  |  |  |  |  |  | $ 1,200 |  |  |
Lawsuit nine |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, damages owed value |  |  |  |  |  |  |  |  |  | $ 493 |  |  |  |
Lawsuit ten |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  |  |  |  |  |  |  |  |  |  | Sierra Gorda S.C.M |  |  |
Lawsuits, name of defendant |  |  |  |  |  |  |  |  |  |  | the Company |  |  |
Lawsuits, lawsuit filing date |  |  |  |  |  |  |  |  |  |  | December 16, 2011 |  |  |
Lawsuits, nominal value |  |  |  |  |  |  |  |  |  |  | $ 46,000 |  |  |
Interest and associated fines | $ 3,600 |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuit fifteen |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits, nominal value |  |  |  |  |  |  |  |  |  |  | $ 542,000 |  |  |
Law Suit One A | Nitratos Naturais do Chile Ltda. | Provision for taxes other than income tax | Appeal pending | Fazoanda Do Estado De Sao Paulo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Law suits fines penalties and damages payable |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 492
Law Suit One B | Nitratos Naturais do Chile Ltda. | Provision for taxes other than income tax | Appeal pending | Fazoanda Do Estado De Sao Paulo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Law suits fines penalties and damages payable |  |  |  |  |  |  |  |  |  |  |  |  | $ 265 |

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