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Right-of-use assets and Lease liabilities - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Right-of-use assets and Lease liabilities |  |  |
Total lease expenses | $ 78,880 | $ 71,897 | $ 61,689
Expense relating to variable lease payments not included in measurement of lease liabilities | 3,631 | 1,313 | 1,117
Income from subleasing right-of-use assets | $ 142 | $ 146 | $ 176

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- Definition The amount of the expense relating to variable lease payments not included in the measurement of lease liabilities. Variable lease payments are the portion of payments made by a lessee to a lessor for the right to use an underlying asset during the lease term that varies because of changes in facts or circumstances occurring after the commencement date, other than the passage of time. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 53 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_53_e&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of income from subleasing right-of-use assets. Sublease is a transaction for which an underlying asset is re-leased by a lessee (‘intermediate lessor’) to a third party, and the lease (‘head lease’) between the head lessor and lessee remains in effect. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 53 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_53_f&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_IncomeFromSubleasingRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | sqm_DisclosureOfRightOfUseAssetsAndLeaseLiabilitiesAbstract
Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Total lease expenses. + References No definition available. + Details
Name: | sqm_TotalLeaseExpenses
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration