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Provisions and other non-financial liabilities (Details 1) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |
Total | $ 104,166 | $ 110,565
Miscellaneous other provisions [member] |  |
Disclosure of Provisions and other non-financial liabilities [Line Items] |  |
Rent under Lease contract | 85,167 | 90,320
Provision for additional tax related to foreign loans | 740 | 543
End of agreement bonus | 8,159 | 3,641
Directors' per diem allowance | 698 | 1,802
Miscellaneous provisions | 497 | 787
Total | $ 95,261 | $ 97,093

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- Definition The amount of current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + 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_
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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
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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
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Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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