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Cash and cash equivalents - Restricted Cash Balances (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Restricted cash | $ 717 | $ 622
Isapre Norte Grande Ltda. |  |
Cash and Cash Equivalents [Line Items] |  |
Restricted cash | $ 717 | $ 622

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- Definition The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Cash And Cash Equivalents + References No definition available. + Details
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Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=sqm_IsapreNorteGrandeLtdaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |