XML 170 R144.htm IDEA: XBRL DOCUMENT
v3.20.4

Property, plant and equipment (Parenthetical) (Details) - Spare Parts [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items] |  |
Opening balance | $ 39,265 | $ 32,414
Increase in provisions | 3,616 | 6,851
Ending balance | $ 42,881 | $ 39,265

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Increase decrease in provisions for property plant and equipment. + References No definition available. + Details
Name: | sqm_IncreaseDecreaseInProvisionsForPropertyPlantAndEquipment
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Provision for property plant and equipment. + References No definition available. + Details
Name: | sqm_ProvisionForPropertyPlantAndEquipment
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=sqm_SparePartsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |