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v3.20.4

Contingencies and restrictions (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of contingent liabilities [abstract] |  |
Leverage | 0.50 | 0.32

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

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- Definition This is a measurement of leverage, calculated as a company's interest-bearing liabilities minus cash or cash equivalents. + References No definition available. + Details
Name: | sqm_Leverage
Namespace Prefix: | sqm_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration