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Employee benefits - Cost of Service or Benefits Received (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Employee Benefits |  |  |
Financial cost | $ 12 | $ 255 | $ 240
Real loss in plan assets | (214) | (363) | (316)
Settlement | 0 | (1,627) | 0
Net periodic pension expenses | $ (202) | $ (1,735) | $ (76)

X
- Definition The amount of service cost relating to periodic pension expense. + References No definition available. + Details
Name: | sqm_CurrentServiceCostPeriodicPensionExpense
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition The amount of net periodic pension expense. + References No definition available. + Details
Name: | sqm_NetPeriodicPensionExpense
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of return (loss) on plan assets. + References No definition available. + Details
Name: | sqm_ReturnLossOnPlanAssets
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The settlement adjustment to recognize the minimum pension obligation. + References No definition available. + Details
Name: | sqm_SettlementInRegardsToTheMinimumPensionObligation
Namespace Prefix: | sqm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration