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Events occurred after the reporting date (Details 1) - SQM Salar S.A. [Member] - Potassium chloride [Member] - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 17, 2018 | Dec. 31, 2017
Disclosure of Events occurred after the reporting date [Line Items] |  |
Lease payment rate |  | 1.80%
Modification of agreement with CORFO [Member] | Price Range One [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Lease payment rate | 3.00% |
Modification of agreement with CORFO [Member] | Price Range Two [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Lease payment rate | 7.00% |
Modification of agreement with CORFO [Member] | Price Range Three [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Lease payment rate | 10.00% |
Modification of agreement with CORFO [Member] | Price Range Four [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Lease payment rate | 15.00% |
Modification of agreement with CORFO [Member] | Price Range Five [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Lease payment rate | 20.00% |
Top of range [member] | Modification of agreement with CORFO [Member] | Price Range One [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | $ 300 |
Top of range [member] | Modification of agreement with CORFO [Member] | Price Range Two [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 400 |
Top of range [member] | Modification of agreement with CORFO [Member] | Price Range Three [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 500 |
Top of range [member] | Modification of agreement with CORFO [Member] | Price Range Four [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 600 |
Bottom of range [member] | Modification of agreement with CORFO [Member] | Price Range Two [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 300 |
Bottom of range [member] | Modification of agreement with CORFO [Member] | Price Range Three [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 400 |
Bottom of range [member] | Modification of agreement with CORFO [Member] | Price Range Four [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 500 |
Bottom of range [member] | Modification of agreement with CORFO [Member] | Price Range Five [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | 600 |
Bottom of range [member] | Modification of agreement with CORFO [Member] | Price Range Six [Member] |  |
Disclosure of Events occurred after the reporting date [Line Items] |  |
Selling price of product | $ 0 |

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- References No definition available. + Details
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- Definition The percentage lease payment on sales. + References No definition available. + Details
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- Definition The selling price of product per metric ton. + References No definition available. + Details
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- Details
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- Details
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