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Inventories - Movements in Inventory Provisions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Inventories |  |  |
Beginning balance | $ 75,892 | $ 80,930 | $ 88,174
Increase in Lower Value | 29,693 | (3,650) | (5,404)
Additional Provision Differences of Inventory | (161) | 330 | (704)
Increase / Decrease eventual differences and others |  |  | 1,244
Provision Used | (1,367) | (1,718) | (2,380)
Total changes | 28,165 | (5,038) | (7,244)
Final balance | $ 104,057 | $ 75,892 | $ 80,930

X
- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 84 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_ProvisionUsedOtherProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of additional inventory provisions made. + References No definition available. + Details
Name: | sqm_AdditionalProvisionsInventoryReserves
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total increase (decrease) in inventory provisions. + References No definition available. + Details
Name: | sqm_ChangesInInventoryProvisions
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition The amount increase or decrease in existing provisions. + References No definition available. + Details
Name: | sqm_IncreaseDecreaseInExistingProvisionsInventoryReserves
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition It represents of increase in lower value. + References No definition available. + Details
Name: | sqm_IncreaseInLowerValue
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of inventory reserves recognized. + References No definition available. + Details
Name: | sqm_InventoryReserves
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant