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Disclosures on equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of detailed information about controls capital management [Abstract] |
Disclosure of detailed information about controls capital management [Text Block] | The Company’s management controls capital management based on the following ratios:
Capital Management |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | Description (1) |  | Calculation (1)
Net Financial Debt (ThUS$) |  |  | 204,692 |  |  |  | 1,074,020 |  |  | Financial Debt – Financial Resources |  | Other current Financial Liabilities + Other Non-Current Financial Liabilities– Cash and Cash Equivalents – Other Current Financial Assets – Hedging Assets, non-current
Liquidity |  |  | 4.62 |  |  |  | 5.40 |  |  | Current Assets divided by Current Liabilities |  | Total Current Assets / Total Current Liabilities
ROE |  |  | 18.41 | % |  |  | 7.79 | % |  | Profit for the year divided by Total Equity |  | Profit for the year / Equity
Adjusted EBITDA (ThUS$) |  |  | 1,185,453 |  |  |  | 579,765 |  |  | Adjusted EBITDA |  | Profit (loss) + Depreciation and Amortization Expenses adjustments + Finance Costs + Income Tax – Other income and Share of profit of associates and joint ventures + Other expenses by function – Finance income – Currency differences
EBITDA (ThUS$) |  |  | 1,140,086 |  |  |  | 524,650 |  |  | EBITDA |  | Profit (loss) + Depreciation and Amortization Expense adjustments + Finance Costs + Income Tax
ROA |  |  | 21.29 | % |  |  | 9.83 | % |  | Adjusted EBITDA – Depreciation divided by Total Assets net of financial resources less related parties’ investments |  | (Gross Profit – Administrative Expenses)/ (Total Assets – Cash and Cash Equivalents – Other Current Financial Assets – Other Non-Current Financial Assets – Equity accounted Investments) (LTM)
Indebtedness |  |  | 0.06 |  |  |  | 0.50 |  |  | Net Financial Debt on Equity |  | Net Financial Debt / Total Equity
Disclosure of classes of share capital [text block] | As of December 31, 2021, the Company has placed share issues in the market as described in note 1.7:
|  | As of December 31, 2021 |  |  | As of December 31, 2020 |
Type of capital in preferred shares |  | Series A |  |  | Series B |  |  | Series A |  |  | Series B |
Description of type of capital in shares
Number of authorized shares |  |  | 142,819,552 |  |  |  | 142,818,904 |  |  |  | 142,819,552 |  |  |  | 120,376,972 |
Number of fully subscribed and paid shares |  |  | 142,819,552 |  |  |  | 142,818,904 |  |  |  | 142,819,552 |  |  |  | 120,376,972 |
Number of subscribed, partially paid shares |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Increase (decrease) in the number of current shares |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Number of outstanding shares |  |  | 142,818,904 |  |  |  | 142,818,904 |  |  |  | 142,819,552 |  |  |  | 120,376,972 |
Number of shares owned by the Company or its subsidiaries or associates |  |  | 648 |  |  |  | - |  |  |  | - |  |  |  | - |
Number of shares whose issuance is reserved due to the existence of options or agreements to dispose shares |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Capital amount in shares ThUS$ |  |  | 134,750 |  |  |  | 1,442,893 |  |  |  | 134,750 |  |  |  | 342,636 |
Total number of subscribed shares |  |  | 142,819,552 |  |  |  | 142,818,904 |  |  |  | 142,819,552 |  |  |  | 120,376,972 |
| 19.4 | Disclosures on reserves in Equity and non-controlling interests
As of December 31, 2021, and 2020, this caption comprises the following:
Disclosures on reserves in equity |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Reserve for currency exchange conversion (1) |  |  | (7,913 | ) |  |  | (11,569 | ) |  |  | (25,745 | )
Reserve for cash flow hedges (2) |  |  | (34,025 | ) |  |  | 4,491 |  |  |  | 7,196 |
Reserve for gains and losses from financial assets measured at fair value through other comprehensive income (3) |  |  | (11,146 | ) |  |  | 6,872 |  |  |  | (270 | )
Reserve for actuarial gains or losses in defined benefit plans (4) |  |  | (4,174 | ) |  |  | (8,680 | ) |  |  | (9,490 | )
Other reserves |  |  | 13,103 |  |  |  | 16,318 |  |  |  | 14,086 |
Total |  |  | (44,155 | ) |  |  | 7,432 |  |  |  | (14,223 | )
(1) This balance reflects retained earnings for changes in the exchange rate when converting the financial statements of subsidiaries whose functional currency is different from the US dollar. (2) The Company maintains, as hedge instruments, financial derivatives related to obligations with the public issued in UF and Chilean pesos, Changes from the fair value of derivatives designated and classified as hedges are recognized under this classification. (3) This caption includes the fair value of equity investments that are not held for trading and that the group has irrevocably opted to recognize in this category upon initial recognition. In the event that such equity instruments are fully or partially disposed of, the proportional accumulated effect of accumulated fair value will be transferred to retained earnings. (4) This caption reflects the effects of changes in actuarial assumptions, mainly changes in the discount rate.
Disclosure of detailed information about movement in other reserves [Text Block] | Movements in other reserves and changes in interest were as follows:
|  | Foreign currency translation difference (1) |  |  | Reserve for cash flow hedges |  |  | Reserve for actuarial gains and losses from defined benefit plans |  |  | Reserve for gains (losses) from financial assets measured at fair value through other comprehensive income |  |  | Other reserves |  |  | Total reserves |
Movements |  | Before taxes |  |  | Before taxes |  |  | Tax |  |  | Before taxes |  |  | Deferred taxes |  |  | Before Taxes |  |  | Deferred taxes |  |  | Before taxes |  |  | Reserves |  |  | Deferred taxes |  |  | Total reserves |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Opening balance as of January 1, 2019 |  |  | (26,307 | ) |  |  | 7,971 |  |  |  | - |  |  |  | (8,176 | ) |  |  | 1,292 |  |  |  | (760 | ) |  |  | (351 | ) |  |  | 11,332 |  |  |  | (15,940 | ) |  |  | 941 |  |  |  | (14,999 | )
Movement of reserves |  |  | 562 |  |  |  | 1,908 |  |  |  | (2,683 | ) |  |  | (3,306 | ) |  |  | 700 |  |  |  | 1,152 |  |  |  | (311 | ) |  |  | 2,754 |  |  |  | 3,070 |  |  |  | (2,294 | ) |  |  | 776 |
Realclasification adjustments |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Closing balance as of December 31, 2019 |  |  | (25,745 | ) |  |  | 9,879 |  |  |  | (2,683 | ) |  |  | (11,482 | ) |  |  | 1,992 |  |  |  | 392 |  |  |  | (662 | ) |  |  | 14,086 |  |  |  | (12,870 | ) |  |  | (1,353 | ) |  |  | (14,223 | )
Movement of reserves |  |  | (404 | ) |  |  | (3,706 | ) |  |  | 1,001 |  |  |  | 955 |  |  |  | (145 | ) |  |  | 9,784 |  |  |  | (2,642 | ) |  |  | 2,537 |  |  |  | 9,166 |  |  |  | (1,786 | ) |  |  | 7,380 |
Realclassification adjustment |  |  | 14,580 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (305 | ) |  |  | 14,275 |  |  |  | - |  |  |  | 14,275 |
Closing balance as of December 31, 2020 |  |  | (11,569 | ) |  |  | 6,173 |  |  |  | (1,682 | ) |  |  | (10,527 | ) |  |  | 1,847 |  |  |  | 10,176 |  |  |  | (3,304 | ) |  |  | 16,318 |  |  |  | 10,571 |  |  |  | (3,139 | ) |  |  | 7,432 |
Movement of reserves |  |  | 4,046 |  |  |  | (52,762 | ) |  |  | 14,246 |  |  |  | 4,648 |  |  |  | (142 | ) |  |  | (12,072 | ) |  |  | 3,818 |  |  |  | 134 |  |  |  | (56,006 | ) |  |  | 17,922 |  |  |  | (38,084 | )
Realclassification adjustment |  |  | (390 | ) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (3,349 | ) |  |  | (3,739 | ) |  |  | - |  |  |  | (3,739 | )
Reclassification to retained earnings |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (13,375 | ) |  |  | 3,611 |  |  |  | - |  |  |  | (13,375 | ) |  |  | 3,611 |  |  |  | (9,764 | )
Closing balance as of December 31, 2021 |  |  | (7,913 | ) |  |  | (46,589 | ) |  |  | 12,564 |  |  |  | (5,879 | ) |  |  | 1,705 |  |  |  | (15,271 | ) |  |  | 4,125 |  |  |  | 13,103 |  |  |  | (62,549 | ) |  |  | 18,394 |  |  |  | (44,155 | )
(1) See details on reserves for foreign currency translation differences on conversion in Note 23, letter b).
Disclosure of detailed information about legal reserves reported in the individual financial statements of the subsidiaries [Text Block] |
Subsidiary – Associate |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM Iberian S.A. |  |  | 9,464 |  |  |  | 9,464 |  |  |  | 9,464 |
SQM Europe NV |  |  | 1,957 |  |  |  | 1,957 |  |  |  | 1,957 |
Soquimich European holding B.V. |  |  | 828 |  |  |  | 828 |  |  |  | 828 |
Abu Dhabi Fertilizer Industries WWL |  |  | 455 |  |  |  | 455 |  |  |  | 455 |
Kore Potash PLC |  |  | - |  |  |  | 3,414 |  |  |  | 2,754 |
Vitas Fzco. |  |  | (38 | ) |  |  | (244 | ) |  |  | - |
Pavoni & C. Spa |  |  | 7 |  |  |  | - |  |  |  | - |
Doktor Tarsa Tarim Sanayi AS |  |  | - |  |  |  | - |  |  |  | 305 |
Others |  |  | (14 | ) |  |  | - |  |  |  | - |
Total |  |  | 12,659 |  |  |  | 15,874 |  |  |  | 15,763 |
Other derivative reserves of the acquisition of subsidiaries, which was already under Company ownership at the acquisition date (IAS 27R) |  |  |  |  |  |  |  |  |  |  |  |
SQM Iberian S.A. |  |  | (1,677 | ) |  |  | (1,677 | ) |  |  | (1,677 | )
Orcoma Estudios SPA |  |  | 2,121 |  |  |  | 2,121 |  |  |  | - |
Total Other reserves |  |  | 13,103 |  |  |  | 16,318 |  |  |  | 14,086 |
Disclosure of dividends [text block] | Dividends discounted from equity from January to December 2021 and 2020 were the following:
Dividends |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Ajay SQM Chile S.A. Dividends |  |  | - |  |  |  | 556 |  |  |  | 882 |
Ajay SQM Chile S.A Payable Dividend |  |  | 577 |  |  |  | 682 |  |  |  | - |
Soquimich Comercial S.A. Special Dividend |  |  | 5,904 |  |  |  | 5,904 |  |  |  | 3,936 |
Soquimich Comercial S.A. Payable Dividend |  |  | 5,927 |  |  |  | 2,976 |  |  |  | 1,999 |
Non-controlling interests |  |  | 12,408 |  |  |  | 10,118 |  |  |  | 6,817 |
Interim dividend |  |  | 157,774 |  |  |  | 44,986 |  |  |  | 211,224 |
Special dividend |  |  | 399,998 |  |  |  | 100,000 |  |  |  | - |
Dividends payable |  |  | 27,681 |  |  |  | 4,369 |  |  |  | 66,891 |
Owners of the Parent |  |  | 585,453 |  |  |  | 149,355 |  |  |  | 278,115 |
Dividends discounted from equity for the period |  |  | 597,861 |  |  |  | 159,473 |  |  |  | 284,932 |
Disclosure Of Financial Restrictions Explanatory | The financial restrictions with respect to the bonds issued by the Company for the periods ended December 31, 2021 and 2020 are as follows.
|  | Financial restrictions (member)
As of December 31, 2021 |  | Financial restrictions (member) |  | Financial restrictions (member) |  | Financial restrictions (member) |  | Financial restrictions (member)
Instrument with restriction |  | Bonds |  | Bonds |  | Bonds |  | Bank loans
Reporting party or subsidiary restriction |  |  |  |  |  |  |  |
Creditor |  | Bondholders |  | Bondholders |  | Bondholders |  | Scotiabank
Registration number |  | H |  | Q |  | O |  | PB 70M
Name of financial indicator or ratio (See definition in Note 20.1) |  | NFD/Equity |  | NFD/Equity |  | NFD/Equity |  | NFD/Equity
Measurement frequency |  | Quarterly |  | Quarterly |  | Quarterly |  | Quarterly
Restriction (Range, value and unit of measure) |  | Must be less than 1.00 |  | Must be less than 1.00 |  | Must be less than 1.00 |  | Must be less than 1.00
Indicator or ratio determined by the company |  | 0.06 |  | 0.06 |  | 0.06 |  | 0.06
Fulfilled YES/NO |  | yes |  | yes |  | yes |  | yes
|  | Financial restrictions (member)
As of December 31, 2020 |  | Financial restrictions (member) |  | Financial restrictions (member) |  | Financial restrictions (member) |  | Financial restrictions (member)
Instrument with restriction |  | Bonds |  | Bonds |  | Bonds |  | Bank loans
Reporting party or subsidiary restriction |  |  |  |  |  |  |  |
Creditor |  | Bondholders |  | Bondholders |  | Bondholders |  | Scotiabank
Registration number |  | H |  | Q |  | O |  | PB 70M
Name of financial indicator or ratio (See definition in Note 20.1) |  | NFD/Equity |  | NFD/Equity |  | NFD/Equity |  | Debt/Equity
Measurement frequency |  | Quarterly |  | Quarterly |  | Quarterly |  | Quarterly
Restriction (Range, value and unit of measure) |  | Must be less than 1.00 |  | Must be less than 1.00 |  | Must be less than 1.00 |  | Must be less than 1.44
Indicator or ratio determined by the company |  | 0.5 |  | 0.5 |  | 0.5 |  | 1.23
Fulfilled YES/NO |  | yes |  | yes |  | yes |  | yes
Disclosure Of Noncontrolling interests Explanatory [Table Text Block] |
|  | % of interests in |  |  | Profit (loss) attributable to non-controlling interests for the year ended |  |  | Equity, non-controlling interests for the year ended |  |  | Dividends paid to non-controlling interests for the year ended |
Subsidiary |  | the ownership held by non- controlling interests |  |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  |  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM Potasio S.A. |  |  | 0.0000001 | % |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Ajay SQM Chile S.A. |  |  | 49.00000 | % |  |  | 769 |  |  |  | 910 |  |  |  | 8,382 |  |  |  | 8,189 |  |  |  | 577 |  |  |  | 1,238 |
Soquimich Comercial S.A. |  |  | 39.36168 | % |  |  | 5,926 |  |  |  | 2,976 |  |  |  | 26,665 |  |  |  | 32,078 |  |  |  | 11,831 |  |  |  | 8,880 |
Comercial Agrorama Ltda. |  |  | 30.00000 | % |  |  | 56 |  |  |  | (45 | ) |  |  | (596 | ) |  |  | (775 | ) |  |  | - |  |  |  | - |
SQM Indonesia S.A. |  |  | 20.00000 | % |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Agrorama S.A. |  |  | 0.00000 | % |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
SQM Thailand Limited |  |  | 0,00400 | % |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1 |  |  |  | - |  |  |  | - |
Total |  |  |  |  |  |  | 6,751 |  |  |  | 3,841 |  |  |  | 34,451 |  |  |  | 39,493 |  |  |  | 12,408 |  |  |  | 10,118 |

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