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Financial instruments (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Financials instruments [Abstract] |
Disclosure of detailed information about other financial assets [Text Block] |
| 13.1 | Types of other current and non-current financial assets
Description of other financial assets |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |
Financial assets at amortized cost (1) |  |  | 345,459 |  |  |  | 485,689 |
Derivative financial instruments |  |  |  |  |  |  |  |
- For hedging |  |  | - |  |  |  | 17,270 |
- Non-hedging (2) |  |  | 2,610 |  |  |  | 2,531 |
Total other current financial assets |  |  | 348,069 |  |  |  | 505,490 |
Financial assets at fair value through other comprehensive income |  |  | 14,569 |  |  |  | 4,785 |
Derivative financial instruments |  |  |  |  |  |  |  |
- For hedging |  |  | 37,276 |  |  |  | 3,918 |
Other financial assets at amortized cost |  |  | 80 |  |  |  | 75 |
Total other non-current financial assets |  |  | 51,925 |  |  |  | 8,778 |
Disclosure of detailed information about other non current financial assets [Text Block] |
Institution |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |
Banco de Crédito e Inversiones |  |  | 185,589 |  |  |  | 185,400 |
Banco Santander (3) |  |  | 45,168 |  |  |  | 74,365 |
Banco Itau Corpbanca |  |  | 49,006 |  |  |  | 120,628 |
Banco Security |  |  | - |  |  |  | 17,964 |
Banco de Chile |  |  | - |  |  |  | 18,026 |
Banco Estado |  |  | - |  |  |  | 15,126 |
Scotiabank Sud Americano |  |  | 31,668 |  |  |  | 54,180 |
JP Morgan Asset Management |  |  | 34,028 |  |  |  | - |
Total |  |  | 345,459 |  |  |  | 485,689 |
| (1) | Corresponds to term deposits whose maturity date is greater than 90 days and less than 360 days from the investment date constituted in the aforementioned financial institutions:
| (2) | Correspond to forwards and options that were not classified as hedging instruments (See detail in Note 13.3).
| (3) | As of December 31, 2020, there were no margin calls and as of December 31, 2019, this value was ThUS$ 1,870.
Disclosure of trade and other receivables [text block] |
| 13.2 | Trade and other receivables
|  | As of December 31, 2020 |  |  | As of December 31, 2019 |
Trade and other receivables |  | Current |  |  | Non-current |  |  | Total |  |  | Current |  |  | Non-current |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Trade receivables, current |  |  | 313,265 |  |  |  | - |  |  |  | 313,265 |  |  |  | 367,583 |  |  |  | - |  |  |  | 367,583 |
Prepayments, current |  |  | 19,900 |  |  |  | - |  |  |  | 19,900 |  |  |  | 20,309 |  |  |  | - |  |  |  | 20,309 |
Other receivables, current |  |  | 32,041 |  |  |  | 11,165 |  |  |  | 43,206 |  |  |  | 11,250 |  |  |  | 1,710 |  |  |  | 12,960 |
Total trade and other receivables |  |  | 365,206 |  |  |  | 11,165 |  |  |  | 376,371 |  |  |  | 399,142 |  |  |  | 1,710 |  |  |  | 400,852 |
See discussion about credit risk in Note 5.2.
|  | As of December 31, 2020 |  |  | As of December 31, 2019 |
Trade and other receivables |  | Assets before allowances |  |  | Allowance for doubtful trade receivables |  |  | Assets for trade receivables, net |  |  | Assets before allowances |  |  | Allowance for doubtful trade receivables |  |  | Assets for trade receivables, net |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Receivables related to credit operations, current |  |  | 327,586 |  |  |  | (14,321 | ) |  |  | 313,265 |  |  |  | 383,775 |  |  |  | (16,192 | ) |  |  | 367,583 |
Trade receivables, current |  |  | 327,586 |  |  |  | (14,321 | ) |  |  | 313,265 |  |  |  | 383,775 |  |  |  | (16,192 | ) |  |  | 367,583 |
Prepayments, current |  |  | 20,684 |  |  |  | (784 | ) |  |  | 19,900 |  |  |  | 21,092 |  |  |  | (783 | ) |  |  | 20,309 |
Other receivables, current |  |  | 36,664 |  |  |  | (4,623 | ) |  |  | 32,041 |  |  |  | 15,659 |  |  |  | (4,409 | ) |  |  | 11,250 |
Current trade and other receivables |  |  | 57,348 |  |  |  | (5,407 | ) |  |  | 51,941 |  |  |  | 36,751 |  |  |  | (5,192 | ) |  |  | 31,559 |
Other receivables, non-current |  |  | 11,165 |  |  |  | - |  |  |  | 11,165 |  |  |  | 1,710 |  |  |  | - |  |  |  | 1,710 |
Non-current receivables |  |  | 11,165 |  |  |  | - |  |  |  | 11,165 |  |  |  | 1,710 |  |  |  | - |  |  |  | 1,710 |
Total trade and other receivables |  |  | 396,099 |  |  |  | (19,728 | ) |  |  | 376,371 |  |  |  | 422,236 |  |  |  | (21,384 | ) |  |  | 400,852 |
Disclosure of financial assets that are either past due or impaired [text block] | As of December 31, 2020, and December 31, 2019 the detail of the renegotiated portfolio is as follows:
As of December 31, 2020
Portfolio analysis
Past due segments |  | Number of customers with non- renegotiated portfolio |  |  | Gross non-renegotiated portfolio ThUS$ |  |  | Number of customers with renegotiated portfolio |  |  | Gross renegotiated portfolio ThUS$ |
Current |  |  | 1,281 |  |  |  | 301,939 |  |  |  | 23 |  |  |  | 179 |
1 - 30 days |  |  | 119 |  |  |  | 12,140 |  |  |  | 8 |  |  |  | 60 |
31 - 60 days |  |  | 12 |  |  |  | 1,226 |  |  |  | - |  |  |  | - |
61 - 90 days |  |  | 5 |  |  |  | 159 |  |  |  | - |  |  |  | - |
91 - 120 days |  |  | 5 |  |  |  | 1,448 |  |  |  | 1 |  |  |  | 41 |
121 - 150 days |  |  | 2 |  |  |  | 2,384 |  |  |  | 2 |  |  |  | 2 |
151 - 180 days |  |  | 3 |  |  |  | 1,398 |  |  |  | 4 |  |  |  | 12 |
181 - 210 days |  |  | 1 |  |  |  | - |  |  |  | 2 |  |  |  | 5 |
211 - 250 days |  |  | 3 |  |  |  | 2 |  |  |  | 6 |  |  |  | 114 |
>250 days |  |  | 156 |  |  |  | 5,030 |  |  |  | 64 |  |  |  | 1,447 |
Total |  |  | 1,587 |  |  |  | 325,726 |  |  |  | 110 |  |  |  | 1,860 |
As of December 31, 2019
Portfolio analysis
Past due segments |  | Number of customers non- renegotiated portfolio |  |  | Gross non-renegotiated portfolio ThUS$ |  |  | Number of customers renegotiated portfolio |  |  | Gross renegotiated portfolio ThUS$ |
Current |  |  | 1,486 |  |  |  | 351,931 |  |  |  | 69 |  |  |  | 892 |
1 - 30 days |  |  | 166 |  |  |  | 20,195 |  |  |  | 72 |  |  |  | 526 |
31 - 60 days |  |  | 26 |  |  |  | 1,279 |  |  |  | 4 |  |  |  | 10 |
61 - 90 days |  |  | 12 |  |  |  | 519 |  |  |  | 3 |  |  |  | 54 |
91 - 120 days |  |  | 5 |  |  |  | 1,026 |  |  |  | 2 |  |  |  | 66 |
121 - 150 days |  |  | 5 |  |  |  | 361 |  |  |  | 7 |  |  |  | 49 |
151 - 180 days |  |  | 7 |  |  |  | 190 |  |  |  | 2 |  |  |  | 33 |
181 - 210 days |  |  | 4 |  |  |  | 51 |  |  |  | - |  |  |  | - |
211 - 250 days |  |  | 6 |  |  |  | 48 |  |  |  | 8 |  |  |  | 11 |
>250 days |  |  | 144 |  |  |  | 5,449 |  |  |  | 137 |  |  |  | 1,085 |
Total |  |  | 1,861 |  |  |  | 381,049 |  |  |  | 304 |  |  |  | 2,726 |
Disclosure of detailed information about expected credit exposure of accounts receivable based on aging analysis [Table Text Block] |
As of December 31, 2020
|  | Trade accounts receivable days past due |  |  |  |  |  |  |
Trade and other receivables |  | Current |  |  | 1 to 30 days |  |  | 31 to 60 days |  |  | 61 to 90 days |  |  | Over 90 days |  |  | Trade |  |  | Trade receivables due from related parties |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ThUS$ |  |  | ThUS$ |
Expected Loss Rate on |  |  | 1 | % |  |  | 10 | % |  |  | 39 | % |  |  | 52 | % |  |  | 79 | % |  |  | - |  |  |  | - |
Total Gross Book Value |  |  | 302,118 |  |  |  | 12,200 |  |  |  | 1,226 |  |  |  | 159 |  |  |  | 11,883 |  |  |  | 327,586 |  |  |  | 70,145 |
Deterioration Estimate |  |  | 3,187 |  |  |  | 1,207 |  |  |  | 477 |  |  |  | 83 |  |  |  | 9,367 |  |  |  | 14,321 |  |  |  | 7,545 |
As of December 31, 2019
|  | Trade accounts receivable days past due |  |  |  |  |  |  |
Trade and other receivables |  | Current |  |  | 1 to 30 days |  |  | 31 to 60 days |  |  | 61 to 90 days |  |  | Over 90 days |  |  | Trade |  |  | Trade receivables due from related parties |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ThUS$ |  |  | ThUS$ |
Expected Loss Rate on |  |  | 1 | % |  |  | 18 | % |  |  | 34 | % |  |  | 44 | % |  |  | 78 | % |  |  | - |  |  |  | - |
Total Gross Book Value |  |  | 352,823 |  |  |  | 20,721 |  |  |  | 1,288 |  |  |  | 573 |  |  |  | 8,370 |  |  |  | 383,775 |  |  |  | 72,550 |
Deterioration Estimate |  |  | 5,285 |  |  |  | 3,664 |  |  |  | 440 |  |  |  | 251 |  |  |  | 6,552 |  |  |  | 16,192 |  |  |  | 11,323 |
Disclosure of detailed information about movement in provision of trade receivables [Table Text Block] | As of December 31, 2020, and December 31, 2019, movements in provisions are as follows:
Provisions |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |
Provision Impairment Accounts receivable at the beginning of the Period |  |  | 32,707 |  |  |  | 32,634 |
(Decrease) increase impairment of accounts receivable |  |  | (4,684 | ) |  |  | 1,057 |
Use of Provision Applied to Accounts Receivable |  |  | (750 | ) |  |  | (984 | )
Impairment of Accounts Receivable Provision at the end of the Period |  |  | 27,273 |  |  |  | 32,707 |
(1) Trade and Other Receivables Provision |  |  | 14,321 |  |  |  | 16,192 |
(2) Current other Receivables Provision |  |  | 5,407 |  |  |  | 5,192 |
(3) Provision Trade payables due to related parties, current |  |  | 7,545 |  |  |  | 11,323 |
Recovery of Insurance |  |  | 347 |  |  |  | 320 |
Impairment of Accounts Receivable Provision |  |  | 27,273 |  |  |  | 32,707 |
Renegotiated Provision |  |  | 1,728 |  |  |  | 1,905 |
Non-renegotiated Provision |  |  | 25,545 |  |  |  | 30,802 |
Disclosure of allowance for credit losses [text block] |
Expressed in ThUS$ |  | Assets / (Liabilities) Derivative Instrument |  |  | Total Realized |  |  | Hedging Reserve in Gross Equity |
Hedging with debt as underlying as of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Hedging Assets |  |  | 37,276 |  |  |  | 24,428 |  |  |  | 12,848 |
Hedging Liabilities |  |  | (19,195 | ) |  |  | (12,956 | ) |  |  | (6,239 | )
Underlying Debt Hedge |  |  | 18,081 |  |  |  | 11,472 |  |  |  | 6,609 |
Underlying Investment Coverage as of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Hedging Assets |  |  | - |  |  |  | - |  |  |  | - |
Hedging Liabilities |  |  | (21,004 | ) |  |  | (20,626 | ) |  |  | (378 | )
Underlying Investments Hedge |  |  | (21,004 | ) |  |  | (20,626 | ) |  |  | (378 | )
Expressed in ThUS$ |  | Assets / (Liabilities) Derivative Instrument |  |  | Total Realized |  |  | Hedging Reserve in Gross Equity |
Hedging with debt as underlying as of December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Hedging Assets |  |  | 3,918 |  |  |  | (4,194 | ) |  |  | 8,112 |
Hedging Liabilities |  |  | (22,771 | ) |  |  | (25,363 | ) |  |  | 2,592 |
Underlying Debt Hedge |  |  | (18,853 | ) |  |  | (29,557 | ) |  |  | 10,704 |
Underlying Investment Coverage as of December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Hedging Assets |  |  | 17,270 |  |  |  | 17,857 |  |  |  | (587 | )
Hedging Liabilities |  |  | (889 | ) |  |  | (711 | ) |  |  | (178 | )
Underlying Investments Hedge |  |  | 16,381 |  |  |  | 17,146 |  |  |  | (765 | )
Hedging Effect in Profit and Equity for the period as of December 31, 2020 |  | Variation Total |  |  | Result |  |  | Hedge Reserve Variation |
Analysis Effect by Type of Coverage |  |  |  |  |  |  |  |  |  |  |  |
Underlying Debt Hedge |  |  | 36,935 |  |  |  | 41,029 |  |  |  | (4,094 | )
Underlying Investments Hedge |  |  | (37,385 | ) |  |  | (37,772 | ) |  |  | 387 |
Total hedging effect on profit or loss and equity in the period |  |  | (450 | ) |  |  | 3,257 |  |  |  | (3,707 | )
Analysis Effect by type of asset |  |  |  |  |  |  |  |  |  |  |  |
Hedging in Current and Non-Current Assets |  |  | 16,088 |  |  |  | 10,765 |  |  |  | 5,323 |
Hedging in Current and Non-Current Liabilities |  |  | (16,538 | ) |  |  | (7,508 | ) |  |  | (9,030 | )
Total Hedge Effect in Profit or Loss and Equity for the period |  |  | (450 | ) |  |  | 3,257 |  |  |  | (3,707 | )
Disclosure of maturity analysis for derivative financial liabilities [text block] | Derivative contract maturities are detailed as follows:
Series |  | Contract amount |  |  | Currency |  | Maturity date
|  | ThUS$ |  |  |  |  |
H |  |  | 134,049 |  |  | UF |  | 01/04/2023
O |  |  | 58,748 |  |  | UF |  | 02/01/2022
P |  |  | 134,228 |  |  | UF |  | 01/15/2028
Q |  |  | 106,933 |  |  | UF |  | 06/01/2030
Disclosure of financial liabilities [text block] | As of December 31, 2020, and December 31, 2019, the detail is as follows:
|  | As of December 31, 2020 |  |  | As of December 31, 2019 |
Other current and non-current financial liabilities |  | Currents |  |  | Non-Current |  |  | Total |  |  | Currents |  |  | Non-Current |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Liabilities at amortized cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank borrowings |  |  | 82 |  |  |  | 69,376 |  |  |  | 69,458 |  |  |  | 199 |  |  |  | 69,138 |  |  |  | 69,337 |
Obligations with the public |  |  | 36,781 |  |  |  | 1,816,626 |  |  |  | 1,853,407 |  |  |  | 280,578 |  |  |  | 1,403,108 |  |  |  | 1,683,686 |
Derivative financial instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For hedging |  |  | 26,699 |  |  |  | 13,511 |  |  |  | 40,210 |  |  |  | 7,183 |  |  |  | 16,477 |  |  |  | 23,660 |
Non-Hedging |  |  | 5,393 |  |  |  | - |  |  |  | 5,393 |  |  |  | 3,168 |  |  |  | - |  |  |  | 3,168 |
Total |  |  | 68,955 |  |  |  | 1,899,513 |  |  |  | 1,968,468 |  |  |  | 291,128 |  |  |  | 1,488,723 |  |  |  | 1,779,851 |
Disclosure of detailed information about borrowings [text block] | As of December 31, 2020, and 2019, the detail is as follows:
Current and non-current bank borrowings |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |
Current loans |  |  | 82 |  |  |  | 199 |
Non-current loans |  |  | 69,376 |  |  |  | 69,138 |
Current and non-current loans |  |  | 69,458 |  |  |  | 69,337 |
Disclosure of detailed information about short term borrowings [Text Block] | As of December 31, 2020, and December 31, 2019, the detail of this caption is as follows:
Debtor |  | Creditor |  |  |  |  |  |  |  |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | Tax ID No. |  | Financial institution |  | Country |  | Currency or adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  | O-E |  | Scotiabank Cayman |  | USA |  | USD |  | Upon maturity |  | 05/30/2023 |  |  | 1.00% |  |  |  | 1.36% |
Debtor |  | Creditor |  | Nominal amounts as of December 31, 2020 |  |  | Current amounts as of December 31, 2020 |  |  |  |
Company |  | Financial institution |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Total |  |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Subtotal |  |  | Borrowing costs |  |  | Total |
|  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM S.A. |  | Scotiabank Cayman |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 82 |  |  |  | 82 |  |  |  | - |  |  |  | 82 |
Total |  |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 82 |  |  |  | 82 |  |  |  | - |  |  |  | 82 |
Debtor |  | Creditor |  | Currency or |  |  |  |  |  |  |  |  |  |
Tax ID No |  | Company |  | Country |  | Tax ID No |  | Financial institution |  | Country |  | adjustment index |  | Repayment |  | maturity |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  | Foreign |  | Scotiabank Cayman |  | USA |  | US$ |  | Upon maturity |  | 05/29/2023 |  |  | 2.11% |  |  |  | 3.01% |
Foreign |  | Nitratos Naturais do Chile Lim. |  | Brazil |  | Foreign |  | Banco ITAU Brasil |  | Brazil |  | BRL |  | Upon maturity |  | 12/31/2019 |  |  | 13.57% |  |  |  | 4.25% |
Debtor |  | Creditor |  | Nominal amounts as of December 31, 2019 |  |  | Current amounts as of December 31, 2019 |
Company |  | Financial institution |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Total |  |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Subtotal |  |  | Borrowing costs |  |  | Total |
|  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM S.A. |  | Scotiabank Cayman |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 187 |  |  |  | 187 |  |  |  | - |  |  |  | 187 |
Nitratos Naturais do Chile |  | Banco ITAU Brasil |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 12 |  |  |  | - |  |  |  | 12 |  |  |  | - |  |  |  | 12 |
Total |  |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 12 |  |  |  | 187 |  |  |  | 199 |  |  |  | - |  |  |  | 199 |
Disclosure of detailed information about current maturities of unsecured obligations [Text Block] | As of December 31, 2020, and December 31, 2019, the detail of current unsecured interest-bearing obligations is composed of promissory notes and bonds, as follows:
Debtor |  | Number of |  |  |  |  |  |  | Currency or |  | Periodicity |  |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | registration or ID of the instrument |  |  | Series |  | Maturity date |  | adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$250 |  | 01/28/2021 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 1.95% |  |  |  | 4.38% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$300 |  | 04/03/2021 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 1.08% |  |  |  | 3.63% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$450 |  | 05/07/2021 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 3.59% |  |  |  | 4.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$400 |  | 01/22/2021 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.17% |  |  |  | 4.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 564 |  |  | H |  | 01/05/2021 |  | UF |  | Semiannual |  | Semiannual |  |  | 0.58% |  |  |  | 4.90% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 699 |  |  | O |  | 02/01/2021 |  | UF |  | Semiannual |  | Upon maturity |  |  | 2.24% |  |  |  | 3.80% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 563 |  |  | P |  | 01/15/2021 |  | UF |  | Semiannual |  | Upon maturity |  |  | 2.37% |  |  |  | 3.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 700 |  |  | Q |  | 06/01/2021 |  | UF |  | Semiannual |  | Upon maturity |  |  | 2.92% |  |  |  | 3.45% |
Effective rates of bonds in Pesos and UF are expressed and calculated in Dollars based on the flows agreed in Cross Currency Swap Agreements.
|  |  |  |  |  | Nominal amounts as of December 31, 2020 |  |  | Carrying amounts of maturities as of December 31, 2020 |
Company |  | Country |  | Series |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Total |  |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Subtotal |  |  | Borrowing costs |  |  | Total |
|  |  |  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM S.A. |  | Chile |  | MUS$250 |  |  | 4,648 |  |  |  | - |  |  |  | 4,648 |  |  |  | 4,648 |  |  |  | - |  |  |  | 4,648 |  |  |  | (433 | ) |  |  | 4,215 |
SQM S.A. |  | Chile |  | MUS$300 |  |  | - |  |  |  | 2,658 |  |  |  | 2,658 |  |  |  | - |  |  |  | 2,658 |  |  |  | 2,658 |  |  |  | (614 | ) |  |  | 2,044 |
SQM S.A. |  | Chile |  | MUS$450 |  |  | 7,508 |  |  |  | - |  |  |  | 7,508 |  |  |  | 7,508 |  |  |  | - |  |  |  | 7,508 |  |  |  | (679 | ) |  |  | 6,829 |
SQM S.A. |  | Chile |  | MUS$400 |  |  | - |  |  |  | 2,869 |  |  |  | 2,869 |  |  |  | - |  |  |  | 2,869 |  |  |  | 2,869 |  |  |  | (237 | ) |  |  | 2,632 |
SQM S.A. |  | Chile |  | H |  |  | 18,212 |  |  |  | - |  |  |  | 18,212 |  |  |  | 18,212 |  |  |  | - |  |  |  | 18,212 |  |  |  | (172 | ) |  |  | 18,040 |
SQM S.A. |  | Chile |  | O |  |  | 962 |  |  |  | - |  |  |  | 962 |  |  |  | 962 |  |  |  | - |  |  |  | 962 |  |  |  | (82 | ) |  |  | 880 |
SQM S.A. |  | Chile |  | P |  |  | 1,824 |  |  |  | - |  |  |  | 1,824 |  |  |  | 1,824 |  |  |  | - |  |  |  | 1,824 |  |  |  | (12 | ) |  |  | 1,812 |
SQM S.A. |  | Chile |  | Q |  |  | - |  |  |  | 350 |  |  |  | 350 |  |  |  | - |  |  |  | 350 |  |  |  | 350 |  |  |  | (21 | ) |  |  | 329 |
Total |  |  |  |  |  |  | 33,154 |  |  |  | 5,877 |  |  |  | 39,031 |  |  |  | 33,154 |  |  |  | 5,877 |  |  |  | 39,031 |  |  |  | (2,250 | ) |  |  | 36,781 |
Debtor |  | Number of |  |  |  |  |  |  | Currency or |  | Periodicity |  |  |  |  |  |
Tax I No. |  | Company |  | Country |  | registration or ID of the instrument |  |  | Series |  | Maturity date |  | adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$250 |  | 04/21/2020 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 0.43% |  |  |  | 5.50% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$250 |  | 01/28/2020 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 2.35% |  |  |  | 4.38 % |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$300 |  | 04/03/2020 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 1.42 % |  |  |  | 3.63 % |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$450 |  | 05/07/2020 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.07 % |  |  |  | 4.25 % |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 564 |  |  | H |  | 01/05/2020 |  | UF |  | Semiannual |  | Semiannual |  |  | 1.36 % |  |  |  | 4.90 % |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 699 |  |  | O |  | 02/01/2020 |  | UF |  | Semiannual |  | Upon maturity |  |  | 2.41 % |  |  |  | 3.80 % |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 563 |  |  | P |  | 01/15/2020 |  | UF |  | Semiannual |  | Upon maturity |  |  | 2.71 % |  |  |  | 3.25 % |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 700 |  |  | Q |  | 06/01/2020 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.11 % |  |  |  | 3.45 % |
|  |  |  |  |  | Nominal amounts as of December 31, 2019 |  |  | Carrying amounts of maturities as of December 31, 2019 |
Company |  | Country |  | Series |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Total |  |  | Up to 90 days |  |  | 90 days to 1 year |  |  | Subtotal |  |  | Borrowing costs |  |  | Total |
|  |  |  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM S.A. |  | Chile |  | MUS$250 |  |  | - |  |  |  | 252,674 |  |  |  | 252,674 |  |  |  | - |  |  |  | 252,674 |  |  |  | 252,674 |  |  |  | (386 | ) |  |  | 252,288 |
SQM S.A. |  | Chile |  | MUS$250 |  |  | 4,648 |  |  |  | - |  |  |  | 4,648 |  |  |  | 4,648 |  |  |  | - |  |  |  | 4,648 |  |  |  | (433 | ) |  |  | 4,215 |
SQM S.A. |  | Chile |  | MUS$300 |  |  | - |  |  |  | 2,658 |  |  |  | 2,658 |  |  |  | - |  |  |  | 2,658 |  |  |  | 2,658 |  |  |  | (614 | ) |  |  | 2,044 |
SQM S.A. |  | Chile |  | MUS$450 |  |  | - |  |  |  | 2,869 |  |  |  | 2,869 |  |  |  | - |  |  |  | 2,869 |  |  |  | 2,869 |  |  |  | (679 | ) |  |  | 2,190 |
SQM S.A. |  | Chile |  | H |  |  | 17,166 |  |  |  | - |  |  |  | 17,166 |  |  |  | 17,166 |  |  |  | - |  |  |  | 17,166 |  |  |  | (139 | ) |  |  | 17,027 |
SQM S.A. |  | Chile |  | O |  |  | 890 |  |  |  | - |  |  |  | 890 |  |  |  | 890 |  |  |  | - |  |  |  | 890 |  |  |  | (67 | ) |  |  | 823 |
SQM S.A. |  | Chile |  | P |  |  | 1,686 |  |  |  | - |  |  |  | 1,686 |  |  |  | 1,686 |  |  |  | - |  |  |  | 1,686 |  |  |  | (12 | ) |  |  | 1,674 |
SQM S.A. |  | Chile |  | Q |  |  | - |  |  |  | 323 |  |  |  | 323 |  |  |  | - |  |  |  | 323 |  |  |  | 323 |  |  |  | (6 | ) |  |  | 317 |
Total |  |  |  |  |  |  | 24,390 |  |  |  | 258,524 |  |  |  | 282,914 |  |  |  | 24,390 |  |  |  | 258,524 |  |  |  | 282,914 |  |  |  | (2,336 | ) |  |  | 280,578 |
Disclosure of detailed information about non current maturities of unsecured obligations [Text Block] | The following table shows the details of bank loans as of December 31, 2020 and 2019:
Debtor |  | Creditor |  | Currency or |  | Type of |  |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | Tax ID No. |  | Financial institution |  | Country |  | adjustment index |  | amortization |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  | Foreign |  | Scotiabank Cayman |  | USA |  | USD |  | Maturity |  |  | 1.98% |  |  |  | 1.36% |
Debtor |  | Creditor |  | Nominal non-current maturities as of December 31, 2020 |  |  | Carrying amounts of maturities as of December 31, 2020 |
Company |  | Financial institution |  | Between 1 and 2 |  |  | Between 2 and 3 |  |  | Between 3 and 4 |  |  | Total |  |  | Between 1 and 2 |  |  | Between 2 and 3 |  |  | Between 3 and 4 |  |  | Subtotal |  |  | Costs of obtaining loans |  |  | Total |
|  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM S.A. |  | Scotiabank Cayman |  |  | - |  |  |  | 70,000 |  |  |  | - |  |  |  | 70,000 |  |  |  | - |  |  |  | 70,000 |  |  |  | - |  |  |  | 70,000 |  |  |  | (624 | ) |  |  | 69,376 |
Total |  |  |  |  | - |  |  |  | 70,000 |  |  |  | - |  |  |  | 70,000 |  |  |  | - |  |  |  | 70,000 |  |  |  | - |  |  |  | 70,000 |  |  |  | (624 | ) |  |  | 69,376 |
Debtor |  | Creditor |  | Currency or |  |  |  |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | Tax ID No. |  | Financial institution |  | Country |  | adjustment index |  | Type of amortization |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  | Foreign |  | Scotiabank Cayman |  | USA |  | USD |  | Maturity |  |  | 2.84% |  |  |  | 3.01% |
Debtor |  | Creditor |  | Nominal non-current maturities as of December 31, 2019 |  |  | Carrying amounts of maturities as of December 31, 2019 |
Company |  | Financial institution |  | Over 1 year to 2 |  |  | Over 2 years to 3 |  |  | Over 3 Years to 4 |  |  | Over 4 Years to 5 |  |  | Over 5 years |  |  | Total |  |  | Over 1 year to 2 |  |  | Over 2 years to 3 |  |  | Costs of obtaining loans |  |  | Total |
|  |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
SQM S.A. |  | Scotiabank Cayman |  |  | - |  |  |  | - |  |  |  | 70,000 |  |  |  | 70,000 |  |  |  | - |  |  |  | - |  |  |  | 70,000 |  |  |  | 70,000 |  |  |  | (862 | ) |  |  | 69,138 |
Total |  |  |  |  | - |  |  |  | - |  |  |  | 70,000 |  |  |  | 70,000 |  |  |  | - |  |  |  | - |  |  |  | 70,000 |  |  |  | 70,000 |  |  |  | (862 | ) |  |  | 69,138 |
The following table shows the details of “unsecured debentures that accrue non-current interest” as of December 31, 2020, and 2019:
Debtor |  | Number of |  |  |  |  |  |  | Currency or |  | Periodicity |  |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | registration or ID of the instrument |  |  | Series |  | Maturity date |  | adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$250 |  | 01/28/2025 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.08% |  |  |  | 4.38% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$300 |  | 04/03/2023 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 3.43% |  |  |  | 3.63% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$450 |  | 05/07/2029 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.18% |  |  |  | 4.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$400 |  | 01/22/2050 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.22% |  |  |  | 4.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 564 |  |  | H |  | 01/05/2030 |  | UF |  | Semiannual |  | Semiannual |  |  | 4.76% |  |  |  | 4.90% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 699 |  |  | O |  | 02/01/2033 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.68% |  |  |  | 3.80% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 563 |  |  | P |  | 01/15/2028 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.24% |  |  |  | 3.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 700 |  |  | Q |  | 06/01/2038 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.43% |  |  |  | 3.45% |
|  | Nominal non-current maturities as of December 31, 2020 |  |  | Carrying amounts of maturities as of December 31, 2020 |
Series |  | Over 1 year to 2 |  |  | Over 2 years to 3 |  |  | Over 3 Years to 4 |  |  | Over 4 Years to 5 |  |  | Over 5 years |  |  | Total |  |  | Over 1 year to 2 |  |  | Over 2 years to 3 |  |  | Over 3 Years to 4 |  |  | Over 4 Years to 5 |  |  | Over 5 years |  |  | Subtotal |  |  | Bond issuance costs |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
MUS$250 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 250,000 |  |  |  | - |  |  |  | 250,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 250,000 |  |  |  | - |  |  |  | 250,000 |  |  |  | (1,336 | ) |  |  | 248,664 |
MUS$300 |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 300,000 |  |  |  | (781 | ) |  |  | 299,219 |
MUS$450 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 450,000 |  |  |  | 450,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 450,000 |  |  |  | 450,000 |  |  |  | (5,020 | ) |  |  | 444,980 |
MUS$400 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 400,000 |  |  |  | 400,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 400,000 |  |  |  | 400,000 |  |  |  | (6,582 | ) |  |  | 393,418 |
H |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 126,386 |  |  |  | 126,386 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 126,386 |  |  |  | 126,386 |  |  |  | (1,378 | ) |  |  | 125,008 |
O |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 61,334 |  |  |  | 61,334 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 61,334 |  |  |  | 61,334 |  |  |  | (904 | ) |  |  | 60,430 |
P |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 122,668 |  |  |  | 122,668 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 122,668 |  |  |  | 122,668 |  |  |  | (77 | ) |  |  | 122,591 |
Q |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 122,668 |  |  |  | 122,668 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 122,668 |  |  |  | 122,668 |  |  |  | (352 | ) |  |  | 122,316 |
Total |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | 250,000 |  |  |  | 1,283,056 |  |  |  | 1,833,056 |  |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | 250,000 |  |  |  | 1,283,056 |  |  |  | 1,833,056 |  |  |  | (16,430 | ) |  |  | 1,816,626 |
Debtor |  | Number of |  |  |  |  |  |  | Currency or |  | Periodicity |  |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | registration or ID of the instrument |  |  | Series |  | Maturity date |  | adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  |  | Nominal rate |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$250 |  | 01/28/2025 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.08% |  |  |  | 4.38% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$300 |  | 04/03/2023 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 3.43% |  |  |  | 3.63% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | - |  |  | MUS$450 |  | 05/07/2029 |  | US$ |  | Semiannual |  | Upon maturity |  |  | 4.19% |  |  |  | 4.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 564 |  |  | H |  | 01/05/2030 |  | UF |  | Semiannual |  | Semiannual |  |  | 4.78% |  |  |  | 4.90% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 699 |  |  | O |  | 02/01/2033 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.70% |  |  |  | 5.50% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 563 |  |  | P |  | 01/15/2028 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.24% |  |  |  | 3.25% |
93.007.000-9 |  | SQM S.A. |  | Chile |  |  | 700 |  |  | Q |  | 06/01/2038 |  | UF |  | Semiannual |  | Upon maturity |  |  | 3.45% |  |  |  | 3.45% |
|  | Nominal non-current maturities as of December 31, 2019 |  |  | Carrying amounts of maturities as of December 31, 2019 |
Series |  | Over 1 year to 2 |  |  | Over 2 years to 3 |  |  | Over 3 Years to 4 |  |  | Over 4 Years to 5 |  |  | Over 5 years |  |  | Total |  |  | Over 1 year to 2 |  |  | Over 2 years to 3 |  |  | Over 3 Years to 4 |  |  | Over 4 Years to 5 |  |  | Over 5 years |  |  | Subtotal |  |  | Bond issuance costs |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
MUS$250 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 250,000 |  |  |  | 250,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 250,000 |  |  |  | 250,000 |  |  |  | (1,514 | ) |  |  | 248,486 |
MUS$300 |  |  | - |  |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | - |  |  |  | 300,000 |  |  |  | - |  |  |  | - |  |  |  | 300,000 |  |  |  | (1,393 | ) |  |  | 298,607 |
MUS$450 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 450,000 |  |  |  | 450,000 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 450,000 |  |  |  | 450,000 |  |  |  | (5,923 | ) |  |  | 444,077 |
H |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 75,621 |  |  |  | 130,617 |  |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 75,621 |  |  |  | 130,617 |  |  |  | (1,253 | ) |  |  | 129,364 |
O |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 56,715 |  |  |  | 56,715 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 56,715 |  |  |  | 56,715 |  |  |  | (811 | ) |  |  | 55,904 |
P |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 113,430 |  |  |  | 113,430 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 113,430 |  |  |  | 113,430 |  |  |  | (89 | ) |  |  | 113,341 |
Q |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 113,430 |  |  |  | 113,430 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 113,430 |  |  |  | 113,430 |  |  |  | (101 | ) |  |  | 113,329 |
Total |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 313,749 |  |  |  | 13,749 |  |  |  | 1,059,196 |  |  |  | 1,414,192 |  |  |  | 13,749 |  |  |  | 13,749 |  |  |  | 313,749 |  |  |  | 13,749 |  |  |  | 1,059,196 |  |  |  | 1,414,192 |  |  |  | (11,084 | ) |  |  | 1,403,108 |
Disclosure of information about issue of series H bonds [Text Block] | For the periods ended December 31, 2020, and December 31, 2019, the Company has made the following payments with a charge to the Series H bonds and their associated CCS hedging:
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payments of interest, Series H bonds |  |  | 6,601 |  |  |  | 7,868 |  |  |  | 8,325 |
CCS Coverage |  |  | 2,575 |  |  |  | 1,952 |  |  |  | 495 |
Disclosure of information about second issue of single series bonds [Text Block] | As of December 31, 2020 and December 31, 2019, the detail of payments charged to the line of single series bonds, second issue is as follows
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Interest payment |  |  | 6,875 |  |  |  | 13,750 |  |  |  | 13,750 |
Disclosure of information about issue of series O bonds [Text Block] | For the periods ended December 31, 2020, and December 31, 2019, the Company has made the following payments with a charge to Series O bonds and their associated CCS hedging
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest, Series O bonds |  |  | 2,070 |  |  |  | 2,308 |  |  |  | 2,457 |
CCS Coverage |  |  | 599 |  |  |  | 354 |  |  |  | 205 |
Disclosure of information about third issue of single series bonds [Text Block] | For the periods ended 31, 2020, and December 31, 2019, the following payments have been made with a debit to the line of single-series bonds, third issue:
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest |  |  | 10,875 |  |  |  | 10,875 |  |  |  | 10,875 |
Disclosure of information about fourth issue of single series bonds [Text Block] | For the periods ended on December 31, 2020 and December 31, 2019, the following payments have been made.
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest |  |  | 10,938 |  |  |  | 10,938 |  |  |  | 10,938 |
Disclosure of information about issue of series P bonds [Table Text Block] | For the periods ended on December 31, 2020 and December 31, 2019, the following payments and their associated CCS have been made:
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest series P |  |  | 3,534 |  |  |  | 3,960 |  |  |  | 1,085 |
CCS Coverage |  |  | 3,439 |  |  |  | 2,995 |  |  |  | 1,421 |
Disclosure of information about issue of series Q bonds [Table Text Block] | For the years ended December 31, 2020 and December 31, 2019, the following payments have been made:
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest series Q |  |  | 3,769 |  |  |  | 3,791 |  |  |  | 319 |
CCS Coverage |  |  | 1,021 |  |  |  | - |  |  |  | - |
Disclosure of information about fifth issue of single series bonds [Text Block] | For the periods ended on December 31, 2020 and December 31, 2019, the following payments have been made:
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest |  |  | 19,125 |  |  |  | 9,563 |  |  |  | - |
Disclosure of information about sixth issue of single series bonds [Text Block] |
Payments made |  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Payment of interest |  |  | 8,500 |  |  |  | - |  |  |  | - |
Disclosure of trade and other payables [text block] |
13.5 | Trade and other payables
| a) | Details trade and other payables
|  | As of December 31, 2020 |  |  | As of December 31, 2019 |
Details trade and other payables |  | Current |  |  | Non-current |  |  | Total |  |  | Current |  |  | Non-current |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Accounts payable |  |  | 203,346 |  |  |  | - |  |  |  | 203,346 |  |  |  | 205,414 |  |  |  | - |  |  |  | 205,414 |
Other accounts payable |  |  | 587 |  |  |  | - |  |  |  | 587 |  |  |  | 376 |  |  |  | - |  |  |  | 376 |
Prepayments from customers |  |  | - |  |  |  | 4,027 |  |  |  | 4,027 |  |  |  | - |  |  |  | - |  |  |  | - |
Total |  |  | 203,933 |  |  |  | 4,027 |  |  |  | 207,960 |  |  |  | 205,790 |  |  |  | - |  |  |  | 205,790 |
Disclosure of detailed information about the current and past due suppliers [Text Block] | As of December 31, 2020, and December 31, 2019, the balance of current and past due accounts payable is made up as follows: Suppliers current on all payments
|  | Amounts according to payment periods as of December 31, 2020 |
Type of Supplier |  | Up to 30 Days |  |  | 31 - 60 days |  |  | 61 - 90 Days |  |  | 91 - 120 days |  |  | 121 - 365 days |  |  | 366 and more days |  |  | Total |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ThUS$ |
Goods |  |  | 111,323 |  |  |  | 1,947 |  |  |  | 123 |  |  |  | 31 |  |  |  | 5 |  |  |  | 4,027 |  |  |  | 117,456 |
Services |  |  | 46,187 |  |  |  | 1,380 |  |  |  | 16 |  |  |  | 757 |  |  |  | 86 |  |  |  | - |  |  |  | 48,426 |
Others |  |  | 29,325 |  |  |  | 7 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 29,332 |
Total |  |  | 186,835 |  |  |  | 3,334 |  |  |  | 139 |  |  |  | 788 |  |  |  | 91 |  |  |  | 4,027 |  |  |  | 195,214 |
|  | Amounts according to payment periods as of December 31, 2019 |
Type of Supplier |  | Up to 30 Days |  |  | 31 - 60 days |  |  | 61 - 90 Days |  |  | 91 - 120 days |  |  | 121 - 365 days |  |  | 366 and more days |  |  | Total |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ThUS$ |
Goods |  |  | 126,577 |  |  |  | 4,655 |  |  |  | 128 |  |  |  | 116 |  |  |  | 2,019 |  |  |  | - |  |  |  | 133,495 |
Services |  |  | 51,785 |  |  |  | 168 |  |  |  | - |  |  |  | - |  |  |  | 87 |  |  |  | - |  |  |  | 52,040 |
Others |  |  | 8,741 |  |  |  | 146 |  |  |  | - |  |  |  | - |  |  |  |  |  |  |  | - |  |  |  | 8,887 |
Total |  |  | 187,103 |  |  |  | 4,969 |  |  |  | 128 |  |  |  | 116 |  |  |  | 2,106 |  |  |  | - |  |  |  | 194,422 |
Suppliers past due on payments
|  | Amounts according to payment periods as of December 31, 2020 |
Type of Supplier |  | Up to 30 Days |  |  | 31 - 60 days |  |  | 61 - 90 Days |  |  | 91 - 120 days |  |  | 121 - 365 days |  |  | 366 and more days |  |  | Total |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ThUS$ |
Goods |  |  | 1,305 |  |  |  | 59 |  |  |  | 47 |  |  |  | 39 |  |  |  | 517 |  |  |  | - |  |  |  | 1,967 |
Services |  |  | 2,298 |  |  |  | 764 |  |  |  | - |  |  |  | 453 |  |  |  | 505 |  |  |  | - |  |  |  | 4,020 |
Others |  |  | 3,258 |  |  |  | 150 |  |  |  | 371 |  |  |  | 118 |  |  |  | 2,275 |  |  |  | - |  |  |  | 6,172 |
Total |  |  | 6,861 |  |  |  | 973 |  |  |  | 418 |  |  |  | 610 |  |  |  | 3,297 |  |  |  | - |  |  |  | 12,159 |
|  | Amounts according to payment periods as of December 31 2019 |
Type of Supplier |  | Up to 30 Days |  |  | 31 - 60 days |  |  | 61 - 90 Days |  |  | 91 - 120 days |  |  | 121 - 365 days |  |  | 366 and more days |  |  | Total |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ThUS$ |
Goods |  |  | 2,086 |  |  |  | 264 |  |  |  | 35 |  |  |  | 65 |  |  |  | 1,060 |  |  |  | - |  |  |  | 3,510 |
Services |  |  | 3,073 |  |  |  | 329 |  |  |  | 116 |  |  |  | 387 |  |  |  | 580 |  |  |  | - |  |  |  | 4,485 |
Others |  |  | 1,918 |  |  |  | 45 |  |  |  | 311 |  |  |  | 215 |  |  |  | 508 |  |  |  | - |  |  |  | 2,997 |
Total |  |  | 7,077 |  |  |  | 638 |  |  |  | 462 |  |  |  | 667 |  |  |  | 2,148 |  |  |  | - |  |  |  | 10,992 |
Disclosure of detailed information about categories of financial assets [Text Block] |
| a) | Financial Assets
|  | As of December 31, 2020 |  |  | As of December 31, 2019 |
Description of financial assets |  | Current |  |  | Non-current |  |  | Total |  |  | Current |  |  | Non-current |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Cash and cash equivalent |  |  | 509,102 |  |  |  | - |  |  |  | 509,102 |  |  |  | 588,530 |  |  |  | - |  |  |  | 588,530 |
Trade receivables due from related parties at amortized cost |  |  | 62,601 |  |  |  | - |  |  |  | 62,601 |  |  |  | 61,227 |  |  |  | - |  |  |  | 61,227 |
Financial assets measured at amortized cost |  |  | 345,459 |  |  |  | 80 |  |  |  | 345,539 |  |  |  | 485,689 |  |  |  | 75 |  |  |  | 485,764 |
Loans and receivables measured at amortized cost |  |  | 365,206 |  |  |  | 11,165 |  |  |  | 376,371 |  |  |  | 399,142 |  |  |  | 1,710 |  |  |  | 400,852 |
Total financial assets measured at amortized cost |  |  | 1,282,368 |  |  |  | 11,245 |  |  |  | 1,293,613 |  |  |  | 1,534,588 |  |  |  | 1,785 |  |  |  | 1,536,373 |
Financial instruments for hedging purposes through equity |  |  | - |  |  |  | 37,276 |  |  |  | 37,276 |  |  |  | 17,270 |  |  |  | 3,918 |  |  |  | 21,188 |
Financial instruments held for trading at through profit or loss |  |  | 2,610 |  |  |  | - |  |  |  | 2,610 |  |  |  | 2,531 |  |  |  | - |  |  |  | 2,531 |
Financial assets classified as available for sale at fair value through equity |  |  | - |  |  |  | 14,569 |  |  |  | 14,569 |  |  |  | - |  |  |  | 4,785 |  |  |  | 4,785 |
Total financial assets at fair value |  |  | 2,610 |  |  |  | 51,845 |  |  |  | 54,455 |  |  |  | 19,801 |  |  |  | 8,703 |  |  |  | 28,504 |
Total financial assets |  |  | 1,284,978 |  |  |  | 63,090 |  |  |  | 1,348,068 |  |  |  | 1,554,389 |  |  |  | 10,488 |  |  |  | 1,564,877 |
Disclosure of detailed information about categories of financial liabilities [Text Block] |
| b) | Financial Liabilities
|  | As of December 31, 2020 |  |  | As of December 31, 2019 |
Description of financial liabilities |  | Current |  |  | Non-current |  |  | Total |  |  | Current |  |  | Non-current |  |  | Total |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
For hedging purposes through equity |  |  | 26,699 |  |  |  | 13,511 |  |  |  | 40,210 |  |  |  | 7,183 |  |  |  | 16,477 |  |  |  | 23,660 |
Held for trading at fair value through profit or loss |  |  | 5,393 |  |  |  | - |  |  |  | 5,393 |  |  |  | 3,168 |  |  |  | - |  |  |  | 3,168 |
Financial liabilities at fair value through profit or loss |  |  | 32,092 |  |  |  | 13,511 |  |  |  | 45,603 |  |  |  | 10,351 |  |  |  | 16,477 |  |  |  | 26,828 |
Bank loans |  |  | 82 |  |  |  | 69,376 |  |  |  | 69,458 |  |  |  | 199 |  |  |  | 69,138 |  |  |  | 69,337 |
Obligations to the public |  |  | 36,781 |  |  |  | 1,816,626 |  |  |  | 1,853,407 |  |  |  | 280,578 |  |  |  | 1,403,108 |  |  |  | 1,683,686 |
Lease Liabilities |  |  | 5,528 |  |  |  | 25,546 |  |  |  | 31,074 |  |  |  | 7,694 |  |  |  | 30,203 |  |  |  | 37,897 |
Trade and other payables |  |  | 203,933 |  |  |  | 4,027 |  |  |  | 207,960 |  |  |  | 205,790 |  |  |  | - |  |  |  | 205,790 |
Trade payables due to related parties |  |  | 606 |  |  |  | - |  |  |  | 606 |  |  |  | 475 |  |  |  | - |  |  |  | 475 |
Total financial liabilities at amortized cost |  |  | 246,930 |  |  |  | 1,915,575 |  |  |  | 2,162,505 |  |  |  | 494,736 |  |  |  | 1,502,449 |  |  |  | 1,997,185 |
Total financial liabilities |  |  | 279,022 |  |  |  | 1,929,086 |  |  |  | 2,208,108 |  |  |  | 505,087 |  |  |  | 1,518,926 |  |  |  | 2,024,013 |
Disclosure of fair value measurement [text block] |
|  | As of December 31, 2020 |  |  | Measurement Methodology |
Fair value measurement of assets and liabilities |  | Carrying Amount at Amortized Cost |  |  | Fair value (informative) |  |  | Book Value Fair value |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Financial Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  | 509,102 |  |  |  | 509,102 |  |  |  | - |  |  |  | - |  |  |  | 509,102 |  |  |  | - |
Other current financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Time deposits |  |  | 345,459 |  |  |  | 345,459 |  |  |  | - |  |  |  | - |  |  |  | 345,459 |  |  |  | - |
- Derivative financial instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Forwards |  |  | - |  |  |  | - |  |  |  | 2,263 |  |  |  | - |  |  |  | 2,263 |  |  |  | - |
- Options |  |  | - |  |  |  | - |  |  |  | 347 |  |  |  | - |  |  |  | 347 |  |  |  | - |
Non-current accounts receivable |  |  | 11,165 |  |  |  | 11,165 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Other non-current financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Other |  |  | 99 |  |  |  | 99 |  |  |  | - |  |  |  | - |  |  |  | 99 |  |  |  | - |
- Actions |  |  | - |  |  |  | - |  |  |  | 14,549 |  |  |  | 14,549 |  |  |  | - |  |  |  | - |
- Hedging assets – Swaps |  |  | - |  |  |  | - |  |  |  | 37,276 |  |  |  | - |  |  |  | 37,276 |  |  |  | - |
Other current financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Bank loans |  |  | 82 |  |  |  | 82 |  |  |  | - |  |  |  | - |  |  |  | 82 |  |  |  | - |
- Derivative instruments |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
- Forwards |  |  | - |  |  |  | - |  |  |  | 4,614 |  |  |  | - |  |  |  | 4,614 |  |  |  | - |
- Options |  |  | - |  |  |  | - |  |  |  | 780 |  |  |  | - |  |  |  | 780 |  |  |  | - |
-Hedging liabilities - Swaps |  |  | - |  |  |  | - |  |  |  | 5,695 |  |  |  | - |  |  |  | 5,695 |  |  |  | - |
-Inversions -Swaps |  |  | - |  |  |  | - |  |  |  | 21,004 |  |  |  | - |  |  |  | 21,004 |  |  |  | - |
- Unsecured obligations |  |  | 36,781 |  |  |  | 36,781 |  |  |  | - |  |  |  | - |  |  |  | 36,781 |  |  |  | - |
- Current lease liabilities |  |  | 5,528 |  |  |  | 5,528 |  |  |  | - |  |  |  | - |  |  |  | 5,528 |  |  |  | - |
Other non-current financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Bank loans |  |  | 69,376 |  |  |  | 71,029 |  |  |  | - |  |  |  | - |  |  |  | 71,029 |  |  |  | - |
- Unsecured obligations |  |  | 1,816,626 |  |  |  | 2,355,943 |  |  |  | - |  |  |  | - |  |  |  | 2,355,943 |  |  |  | - |
- Non-current hedging liabilities |  |  | - |  |  |  | - |  |  |  | 13,511 |  |  |  | - |  |  |  | 13,511 |  |  |  | - |
- Non-current lease liabilities |  |  | 25,546 |  |  |  | 26,027 |  |  |  | - |  |  |  | - |  |  |  | 26,027 |  |  |  | - |
|  | As of December 31, 2019 |  |  | Measurement methodology |
Fair value measurement of assets and liabilities |  | Carrying Amount at Amortized Cost |  |  | Fair value (informative) |  |  | Book Value Fair value |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Financial Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  | 588,530 |  |  |  | 588,530 |  |  |  | - |  |  |  | - |  |  |  | 588,530 |  |  |  | - |
Other current financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Time deposits |  |  | 485,689 |  |  |  | 485,689 |  |  |  | - |  |  |  | - |  |  |  | 485,689 |  |  |  | - |
-Derivative financial instruments |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
- Forwards |  |  | - |  |  |  |  |  |  |  | 2,420 |  |  |  | - |  |  |  | 2,420 |  |  |  | - |
- Options |  |  | - |  |  |  | - |  |  |  | 111 |  |  |  | - |  |  |  | 111 |  |  |  | - |
-Investment hedge swaps |  |  | - |  |  |  | - |  |  |  | 17,270 |  |  |  | - |  |  |  | 17,270 |  |  |  | - |
Non-current accounts receivable |  |  | 1,710 |  |  |  | 1,710 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Other non-current financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Other |  |  | 94 |  |  |  | 94 |  |  |  | - |  |  |  | - |  |  |  | 94 |  |  |  | - |
- Actions |  |  | - |  |  |  | - |  |  |  | 4,785 |  |  |  | 4,785 |  |  |  | - |  |  |  | - |
- Hedging assets – Swaps |  |  | - |  |  |  | - |  |  |  | 3,918 |  |  |  | - |  |  |  | 3,918 |  |  |  | - |
Other current financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Bank loans |  |  | 199 |  |  |  | 199 |  |  |  | - |  |  |  | - |  |  |  | 199 |  |  |  | - |
-Derivative instruments |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
- Forwards |  |  | - |  |  |  | - |  |  |  | 2,837 |  |  |  | - |  |  |  | 2,837 |  |  |  | - |
- Options |  |  | - |  |  |  | - |  |  |  | 289 |  |  |  | - |  |  |  | 289 |  |  |  | - |
- Hedging liabilities – Swaps |  |  | - |  |  |  | - |  |  |  | 7,183 |  |  |  | - |  |  |  | 7,183 |  |  |  | - |
- Unsecured obligations |  |  | 280,578 |  |  |  | 280,578 |  |  |  | - |  |  |  | - |  |  |  | 280,578 |  |  |  | - |
-Current lease liabilities |  |  | 7,694 |  |  |  | 7,694 |  |  |  | - |  |  |  | - |  |  |  | 7,694 |  |  |  | - |
Other non-current financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Bank loans |  |  | 69,138 |  |  |  | 71,033 |  |  |  | - |  |  |  | - |  |  |  | 71,033 |  |  |  | - |
- Unsecured obligations |  |  | 1,403,108 |  |  |  | 1,658,506 |  |  |  | - |  |  |  | - |  |  |  | 1,658,506 |  |  |  | - |
- Non-current hedging liabilities |  |  | - |  |  |  | - |  |  |  | 16,477 |  |  |  | - |  |  |  | 16,477 |  |  |  | - |
- Non-current lease liabilities |  |  | 30,203 |  |  |  | 33,187 |  |  |  | - |  |  |  | - |  |  |  | 33,187 |  |  |  | - |

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