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Provisions and other non-financial liabilities (Details 1) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |
Total | $ 317,666 | $ 104,166
Miscellaneous other provisions [member] |  |
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |
Rent under Lease contract | 260,889 | 85,167
Provision for additional tax related to foreign loans | 1,027 | 740
End of agreement bonus | 2,792 | 8,159
Directors' per diem allowance | 3,938 | 698
Miscellaneous provisions | 502 | 497
Total | $ 269,148 | $ 95,261

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- Definition The amount of current provisions, including provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_l&doctype=Standard -URIDate 2021-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of miscellaneous current other provisions. [Refer: Miscellaneous other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_d&doctype=Standard -URIDate 2021-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The amount of provision for agreement bonus. + References No definition available. + Details
Name: | sqm_ProvisionForAgreementBonus
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of provision for director allowance. + References No definition available. + Details
Name: | sqm_ProvisionForDirectorAllowance
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of provision for tax related to foreign loan. + References No definition available. + Details
Name: | sqm_ProvisionForTaxRelatedToForeignLoan
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of provision for short term rent under lease contract. + References No definition available. + Details
Name: | sqm_ShortTermRentUnderLeaseContractProvision
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |