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Financial instruments (Details 3) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financial instruments [Line Items] |  |
Gross receivables | $ 674,244 | $ 396,099
Impairment provision for doubtful receivables | (13,999) | (19,728)
Trade receivables, net | 660,245 | 376,371
Receivables related to credit operations, current [Member] |  |
Financial instruments [Line Items] |  |
Gross receivables | 600,664 | 327,586
Impairment provision for doubtful receivables | (10,352) | (14,321)
Trade receivables, net | 590,312 | 313,265
Prepayments, current [Member] |  |
Financial instruments [Line Items] |  |
Gross receivables | 49,952 | 20,684
Impairment provision for doubtful receivables | (784) | (784)
Trade receivables, net | 49,168 | 19,900
Other receivables, current [Member] |  |
Financial instruments [Line Items] |  |
Gross receivables | 17,456 | 36,664
Impairment provision for doubtful receivables | (2,863) | (4,623)
Trade receivables, net | 14,593 | 32,041
Other receivables, non-current [Member] |  |
Financial instruments [Line Items] |  |
Gross receivables | 6,172 | 11,165
Impairment provision for doubtful receivables | 0 | 0
Trade receivables, net | $ 6,172 | $ 11,165

X
- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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Period Type: | instant

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- Definition The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_h&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
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- References No definition available. + Details
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Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The amount trade and other receivables before deducting allowances. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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- Details
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- Details
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Period Type: |

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- Details
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Balance Type: |
Period Type: |