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Financial instruments - Reconciliation of Net Debt (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | $ (258,915,000) | $ (1,105,095,000)
Amounts from loans | (235,412,000) | (677,930,000)
Amounts from interests | 58,884,000 | 81,656,000
Other cash income/expenses | 1,140,096,000 | 1,630,815,000
Interests | 15,763,000 | (136,825,000)
Exchange rate differences | (84,710,000) | 1,226,000
Fair value | 24,540,000 | (52,762,000)
Net debt, ending | 660,246,000 | (258,915,000)
Obligations with the public and bank loans |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | (2,555,511,000) | (1,922,864,000)
Amounts from loans | (246,883,000) | (685,130,000)
Amounts from interests | 98,155,000 | 75,578,000
Other cash income/expenses | 2,566,000 | 16,570,000
Interests | (103,100,000) | (84,138,000)
Exchange rate differences | (44,102,000) | 44,473,000
Net debt, ending | (2,848,875,000) | (2,555,511,000)
Current and non-current lease liabilities |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | (54,223,000) | (31,074,000)
Amounts from loans | 10,478,000 | 7,960,000
Amounts from interests | 1,226,000 | 1,587,000
Other cash income/expenses | 0 | 0
Interests | (20,426,000) | (32,877,000)
Exchange rate differences | 1,211,000 | 181,000
Net debt, ending | (61,734,000) | (54,223,000)
Financial instruments derived from hedging |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | (81,597,000) | 18,070,000
Amounts from loans | 993,000 | (760,000)
Amounts from interests | 7,623,000 | 7,238
Other cash income/expenses | 0 | 0
Interests | 37,494,000 | (52,254,000)
Exchange rate differences | 0 | 0
Fair value | 25,426,000 | (53,891,000)
Net debt, ending | (10,061,000) | (81,597,000)
Non-hedging derivative financial instruments (net) |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | (418,000) |
Amounts from loans | 0 |
Amounts from interests | 0 |
Other cash income/expenses | (39,878,000) |
Interests | 38,653,000 |
Exchange rate differences | 0 |
Net debt, ending | (1,643,000) | (418,000)
Hedging and Investment Derivatives |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | 12,613,000 |
Amounts from loans | 0 |
Amounts from interests | 0 |
Other cash income/expenses | (52,698,000) |
Interests | 16,104,000 |
Exchange rate differences | 0 |
Fair value | (6,003,000) |
Net debt, ending | (29,984,000) | 12,613,000
Current and non current financial liabilities |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | (2,691,749,000) | (1,938,652,000)
Amounts from loans |  | (677,930,000)
Amounts from interests |  | 84,403,000
Other cash income/expenses |  | 14,243,000
Interests |  | (164,576,000)
Exchange rate differences |  | 44,654,000
Fair value |  | (53,891,000)
Net debt, ending |  | (2,691,749,000)
Current and non-current financial liabilities |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | (2,679,136,000) |
Amounts from loans | (235,412,000) |
Amounts from interests | 107,004,000 |
Other cash income/expenses | (90,010,000) |
Interests | (31,275,000) |
Exchange rate differences | (42,891,000) |
Fair value | 19,423,000 |
Net debt, ending | (2,952,297,000) | (2,679,136,000)
Cash and cash equivalents |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | 1,515,051,000 | 509,102,000
Amounts from loans | 0 | 0
Amounts from interests | 0 | 0
Other cash income/expenses | 1,165,225,000 | 1,022,061,000
Interests | 0 | 0
Exchange rate differences | (25,040,000) | (16,112,000)
Net debt, ending | 2,655,236,000 | 1,515,051,000
Deposits that do not qualify as cash and cash equivalents |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | 905,170,000 | 345,459,000
Amounts from loans | 0 | 0
Amounts from interests | (48,120,000) | (2,747,000)
Other cash income/expenses | 62,859,000 | 585,106,000
Interests | 47,038,000 | 4,668,000
Exchange rate differences | (16,779,000) | (27,316,000)
Net debt, ending | 950,168,000 | 905,170,000
Derivatives for Investment Hedges SQM Australia |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Amounts from loans | 0 |
Amounts from interests | 0 |
Other cash income/expenses | 2,022,000 |
Interests | 0 |
Exchange rate differences | 0 |
Fair value | 5,117,000 |
Net debt, ending | 7,139,000 |
Derivatives from hedge assets |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | 12,613,000 | (21,004,000)
Amounts from loans |  | 0
Amounts from interests |  | 0
Other cash income/expenses |  | 9,405,000
Interests |  | 23,083,000
Exchange rate differences |  | 0
Fair value |  | 1,129,000
Net debt, ending |  | 12,613,000
Derivatives from other financial non-hedge assets |  |
Disclosure Of Detailed Information About Changes In Net Debt [Line Items] |  |
Net debt, beginning | $ (418,000) | (2,784,000)
Amounts from loans |  | 0
Amounts from interests |  | 0
Other cash income/expenses |  | (2,327)
Interests |  | 4,693,000
Exchange rate differences |  | 0
Net debt, ending |  | $ (418,000)

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