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Board of Directors, Senior Management and Key management personnel (Details) - CLF CLF in Thousands | Apr. 26, 2022 | Apr. 23, 2021
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Board of Directors, Senior Management and Key management personnel |  |
Key management personnel compensation | CLF 600 | CLF 600

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- Definition The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2022-03-24 -Paragraph 17 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2022-en-r&anchor=para_17&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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