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Financial instruments - Reconciliation of Asset and Liability Hedging Derivatives (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Hedge-to-debt derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Hedging derivative, beginning | $ (81,597) | $ 18,070
Hedging derivative, ending | (10,061) | (81,597)
Hedging derivatives to investment |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Hedging derivative, beginning | 12,613 | (21,004)
Hedging derivative, ending | (29,984) | 12,613
Non-hedging derivatives disbursement SQM Australia Pty |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Hedging derivative, ending | 7,139 |
Non-hedging derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Hedging derivative, beginning | (418) | (2,784)
Hedging derivative, ending | (1,643) | (418)
Cash Flow | Hedge-to-debt derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | 8,616 | 6,478
Cash Flow | Hedging derivatives to investment |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | (52,698) | 9,405
Cash Flow | Non-hedging derivatives disbursement SQM Australia Pty |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | 2,022 |
Cash Flow | Non-hedging derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | (39,878) | (2,327)
Income Statement | Hedge-to-debt derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | 37,494 | (52,254)
Income Statement | Hedging derivatives to investment |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | 16,104 | 23,083
Income Statement | Non-hedging derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | 38,653 | 4,693
Equity and Others | Hedge-to-debt derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | 25,426 | (53,891)
Equity and Others | Hedging derivatives to investment |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | (6,003) | $ 1,129
Equity and Others | Non-hedging derivatives disbursement SQM Australia Pty |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Gain (loss) on hedging derivatives | $ 5,117 |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 24A -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_24A_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of a hedging instrument, recognised as an asset (liability). [Refer: Hedging instruments [member]] + References No definition available. + Details
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