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Financial instruments (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Financials instruments [Abstract] |
Disclosure of detailed information about other financial assets [Text Block] | 10.1
Types of other financial assets
Description of other financial assets |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |
Other current financial assets (1) |  |  | 360,941 |  |  | 284,160 |
Derivatives (2) |  |  | 6,038 |  |  | 4,095 |
Hedging assets |  |  | - |  |  | 934 |
Total other current financial assets |  |  | 366,979 |  |  | 289,189 |
Other non-current financial assets (3) |  |  | 42,879 |  |  | 14,099 |
Total other non-current financial assets |  |  | 42,879 |  |  | 14,099 |
(1) | Relates to term deposits with maturities exceeding 90 days and less than 360 days from the investment date.
(2) | Relates to forwards and options that were not classified as hedging instruments (see detail in Note 10.3).
(3) | The detail of other financial assets, non-current is as follows:
|  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |
Non-current investments not accounted for using the equity accounting method, classified as available for sale |  |  | 9,179 |  |  | 6,899 |
Hedging assets |  |  | 8,910 |  |  | 7,156 |
Contribution for constitution of Joint Venture (1) |  |  | 24,745 |  |  | - |
Other financial assets, non-current |  |  | 45 |  |  | 44 |
Total other financial assets, non-current |  |  | 42,879 |  |  | 14,099 |
(1) | SQM Potasio S.A. contributed ThUS$24,745 to set up Western Australia Lithium (WAL). This has still not been legally constituted as a company, so the funds remain in trust waiting to be transferred to WAL.
Disclosure of detailed information about other non current financial assets [Text Block] | The detail of other financial assets, non-current is as follows:
|  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |
Non-current investments not accounted for using the equity accounting method, classified as available for sale |  |  | 9,179 |  |  | 6,899 |
Hedging assets |  |  | 8,910 |  |  | 7,156 |
Contribution for constitution of Joint Venture (1) |  |  | 24,745 |  |  | - |
Other financial assets, non-current |  |  | 45 |  |  | 44 |
Total other financial assets, non-current |  |  | 42,879 |  |  | 14,099 |
(1) | SQM Potasio S.A. contributed ThUS$ 24,745 to set up Western Australia Lithium (WAL). This has still not been legally constituted as a company, so the funds remain in trust waiting to be transferred to WAL.
Disclosure of detailed information about other current financial assets [Text Block] | Detail of other current financial assets
Institution |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |
Banco Santander |  |  | 163,269 |  |  | 54,364 |
Banco de Crédito e Inversiones |  |  | 71,748 |  |  | 40,627 |
Banco Itaú - Corpbanca |  |  | 77,527 |  |  | 63,969 |
Banco Security |  |  | 28,592 |  |  | 15,007 |
Morgan Stanley |  |  | - |  |  | 3,150 |
Scotiabank Sud Americano |  |  | 13,764 |  |  | 107,043 |
Banco Chile |  |  | 4,834 |  |  | - |
Banco BBVA Chile |  |  | 1,207 |  |  | - |
Total |  |  | 360,941 |  |  | 284,160 |
Disclosure of trade and other receivables [text block] |
| 10.2 | Trade and other receivables
|  | 12/31/2017 |  | 12/31/2016 |
|  | Current |  | Non-current |  | Total |  | Current |  | Non-current |  | Total |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$$ |  | ThUS$ |
Trade receivables |  |  | 412,321 |  |  | - |  |  | 412,321 |  |  | 344,839 |  |  | - |  |  | 344,839 |
Prepayments |  |  | 16,177 |  |  | - |  |  | 16,177 |  |  | 6,621 |  |  | - |  |  | 6,621 |
Other receivables |  |  | 18,377 |  |  | 1,912 |  |  | 20,289 |  |  | 17,301 |  |  | 1,840 |  |  | 19,141 |
Total trade and other receivables |  |  | 446,875 |  |  | 1,912 |  |  | 448,787 |  |  | 368,761 |  |  | 1,840 |  |  | 370,601 |
|  | 12/31/2017 |  | 12/31/2016 |
|  | 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 |  |  | 427,400 |  |  | (15,079) |  |  | 412,321 |  |  | 361,656 |  |  | (16,817) |  |  | 344,839 |
Trade receivables, current |  |  | 427,400 |  |  | (15,079) |  |  | 412,321 |  |  | 361,656 |  |  | (16,817) |  |  | 344,839 |
Prepayments, current |  |  | 16,877 |  |  | (700) |  |  | 16,177 |  |  | 9,421 |  |  | (2,800) |  |  | 6,621 |
Other receivables, current |  |  | 23,409 |  |  | (5,032) |  |  | 18,377 |  |  | 19,300 |  |  | (1,999) |  |  | 17,301 |
Current trade and other receivables |  |  | 40,286 |  |  | (5,732) |  |  | 34,554 |  |  | 28,721 |  |  | (4,799) |  |  | 23,922 |
Other receivables, non-current |  |  | 1,912 |  |  | - |  |  | 1,912 |  |  | 1,840 |  |  | - |  |  | 1,840 |
Non-current receivables |  |  | 1,912 |  |  | - |  |  | 1,912 |  |  | 1,840 |  |  | - |  |  | 1,840 |
Total trade and other receivables |  |  | 469,598 |  |  | (20,811) |  |  | 448,787 |  |  | 392,217 |  |  | (21,616) |  |  | 370,601 |
Disclosure of detailed information about trade and other receivables [Text Block] |
|  | 12/31/2017 |  | 12/31/2016 |
|  | 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 |  |  | 427,400 |  |  | (15,079) |  |  | 412,321 |  |  | 361,656 |  |  | (16,817) |  |  | 344,839 |
Trade receivables, current |  |  | 427,400 |  |  | (15,079) |  |  | 412,321 |  |  | 361,656 |  |  | (16,817) |  |  | 344,839 |
Prepayments, current |  |  | 16,877 |  |  | (700) |  |  | 16,177 |  |  | 9,421 |  |  | (2,800) |  |  | 6,621 |
Other receivables, current |  |  | 23,409 |  |  | (5,032) |  |  | 18,377 |  |  | 19,300 |  |  | (1,999) |  |  | 17,301 |
Current trade and other receivables |  |  | 40,286 |  |  | (5,732) |  |  | 34,554 |  |  | 28,721 |  |  | (4,799) |  |  | 23,922 |
Other receivables, non-current |  |  | 1,912 |  |  | - |  |  | 1,912 |  |  | 1,840 |  |  | - |  |  | 1,840 |
Non-current receivables |  |  | 1,912 |  |  | - |  |  | 1,912 |  |  | 1,840 |  |  | - |  |  | 1,840 |
Total trade and other receivables |  |  | 469,598 |  |  | (20,811) |  |  | 448,787 |  |  | 392,217 |  |  | (21,616) |  |  | 370,601 |
Disclosure of financial assets that are either past due or impaired [text block] | As of December 31, 2017 the detail of the uncollateralized portfolio is as follows:
|  | Current |  | Between 1 and 30 days |  | Between 31 and 60 days |  | Between 61 and 90 days |  | More than 91 days |  | Total |
|  | THUS$ |  | THUS$ |  | THUS$ |  | THUS$ |  | THUS$ |  | THUS$ |
Number of customers, portfolio under no renegotiated terms |  |  | 2,282 |  |  | 194 |  |  | 68 |  |  | 21 |  |  | 21 |  |  | 2,586 |
Portfolio under no renegotiated terms |  |  | 388,516 |  |  | 20,022 |  |  | 9,909 |  |  | 851 |  |  | 8,102 |  |  | 427,400 |
Number of customers under renegotiated terms portfolio |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Portfolio under renegotiated terms, gross |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Total gross portfolio |  |  | 388,516 |  |  | 20,022 |  |  | 9,909 |  |  | 851 |  |  | 8,102 |  |  | 427,400 |
As of December 31, 2016 the detail of the uncollateralized portfolio is as follows:
|  | Current |  | Between 1 and 30 days |  | Between 31 and 60 days |  | Between 61 and 90 days |  | More than 91 days |  | Total |
Number of customers, portfolio under no renegotiated terms |  |  | 503 |  |  | 173 |  |  | 59 |  |  | 19 |  |  | 40 |  |  | 794 |
Number of customers under renegotiated terms portfolio |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Total gross portfolio |  |  | 304,072 |  |  | 42,732 |  |  | 7,218 |  |  | 1,182 |  |  | 6,452 |  |  | 361,656 |
Disclosure of allowance for credit losses [text block] |
Hedging assets with underlying debt |  | Derivative instruments (Fwds) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
December 31, 2017 |  |  | 8,910 |  |  | 5,641 |  |  | 2,170 |  |  | - |  |  | 2,170 |
Hedging liabilities with underlying debt |  | Derivative instruments (CCS) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
December 31, 2017 |  |  | 17,128 |  |  | 33,696 |  |  | 41 |  |  | - |  |  | 41 |
Hedging liabilities with underlying investments |  | Derivative instruments (CCS) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
December 31, 2017 |  |  | (20,159) |  |  | (20,256) |  |  | 97 |  |  | - |  |  | 97 |
Hedging assets with underlying debt |  | Derivative instruments (Fwds) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
December 31, 2016 |  |  | 830 |  |  | 789 |  |  | 41 |  |  | (9) |  |  | 32 |
Hedging liabilities with underlying debt |  | Derivative instruments (CCS) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
December 31, 2016 |  |  | 43,235 |  |  | 28,108 |  |  | (29) |  |  | 5 |  |  | (24) |
Hedging liabilities with underlying investments |  | Derivative instruments (CCS) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  |  | ThUS$ |
December 31, 2016 |  |  | 218 |  |  | (294) |  |  | 76 |  |  | (19) |  |  | 57 |
Hedging liabilities with underlying investments |  | Derivative instruments (CCS) |  | Effect on profit or loss for the period Derivative instruments |  | Hedging reserve in gross equity |  | Deferred tax hedging reserve in equity |  | Hedging reserve in equity |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  |  | ThUS$ |
December 31, 2015 |  |  | 74.786 |  |  | (29.245) |  |  | 86 |  |  | 96 |  |  | 182 |
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 |  |  | 191,638 |  | UF |  | 01/05/2018 |
O |  |  | 58,748 |  | UF |  | 02/01/2022 |
Disclosure of financial liabilities [text block] | As of December 31, 2017 and December 31, 2016, the detail is as follows:
|  | 12/31/2017 |  | 12/31/2016 |
|  | Current |  | Non-current |  | Total |  | Current |  | Non-current |  | Total |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Bank borrowings |  |  | 163,568 |  |  | - |  |  | 163,568 |  |  | 101,270 |  |  | - |  |  | 101,270 |
Obligations with the public (bonds) |  |  | 13,494 |  |  | 1,031,507 |  |  | 1,045,001 |  |  | 58,973 |  |  | 1,059,706 |  |  | 1,118,679 |
Derivatives |  |  | 5,979 |  |  | - |  |  | 5,979 |  |  | 1,920 |  |  | - |  |  | 1,920 |
Hedging liabilities |  |  | 37,287 |  |  | - |  |  | 37,287 |  |  | 16,981 |  |  | 33,732 |  |  | 50,713 |
Total |  |  | 220,328 |  |  | 1,031,507 |  |  | 1,251,835 |  |  | 179,144 |  |  | 1,093,438 |  |  | 1,272,582 |
Disclosure of detailed information about borrowings [text block] | As of December 31, 2017 and December 31, 2016, the detail is as follows:
|  | 12/31/2017 |  | 12/31/2016 |
|  | ThUS$ |  | ThUS$ |
Long-term bank borrowings |  |  | - |  |  | - |
Short-term bank borrowings |  |  | 163,568 |  |  | 101.270 |
Short-term borrowings and current portion of long-term borrowings |  |  | 163,568 |  |  | 101.270 |
Total bank borrowings |  |  | 163,568 |  |  | 101.270 |
Disclosure of detailed information about short term borrowings [Text Block] | As of December 31, 2017 and December 31, 2016, the detail of this caption is as follows:
Debtor |  | Creditor |  | Currency or |  |  |  |  |  |  |
Tax ID No |  | Company |  | Country |  | Tax ID No. |  | Financial institution |  | Country |  | adjustment index |  | Repayment |  | Effective rate |  | Nominal rate |
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 1.63 | % | 1.63 | %
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 1.73 | % | 1.73 | %
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 1.73 | % | 1.73 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 97,018,000-1 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.64 | % | 1.64 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 97,018,000-1 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.67 | % | 1.67 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 97,018,000-1 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.67 | % | 1.67 | %
79,626,800-K |  | SQM Salar S.A. |  | Chile |  | 97,018,000-1 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.91 | % | 1.91 | %
79,626,800-K |  | SQM Salar S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 1.94 | % | 1.94 | %
79,947,100-0 |  | SQM Industrial S.A. |  | Chile |  | 97,030,000-7 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.74 | % | 1.74 | %
79,947,100-0 |  | SQM Industrial S.A. |  | Chile |  | 97,030,000-7 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.65 | % | 1.65 | %
|  |  |  | 12/31/2017 |  | 12/31/2017 |
Debtor |  | Creditor |  | Nominal amounts |  | Current amounts
Company |  | Financial institution |  | Up to 90 days ThUS$ |  | 90 days to 1 year ThUS$ |  | Total ThUS$ |  | Up to 90 days ThUS$ |  | 90 days to 1 year ThUS$ |  | Subtotal ThUS$ |  | Borrowing costs ThUS$ |  | Total ThUS$ |
SQM,S,A, |  | Scotiabank Sud Americano |  |  | - |  |  | 20,000 |  |  | 20,000 |  |  | - |  |  | 20,137 |  |  | 20,137 |  |  | - |  |  | 20,137 |
SQM,S,A, |  | Scotiabank Sud Americano |  |  | - |  |  | 17,000 |  |  | 17,000 |  |  | - |  |  | 17,140 |  |  | 17,140 |  |  | - |  |  | 17,140 |
SQM,S,A, |  | Scotiabank Sud Americano |  |  | - |  |  | 3,000 |  |  | 3,000 |  |  | - |  |  | 3,025 |  |  | 3,025 |  |  | - |  |  | 3,025 |
SQM,S,A, |  | Banco Estado |  |  | 15,000 |  |  | - |  |  | 15,000 |  |  | 15,011 |  |  | - |  |  | 15,011 |  |  | - |  |  | 15,011 |
SQM,S,A, |  | Banco Estado |  |  | 15,000 |  |  | - |  |  | 15,000 |  |  | 15,011 |  |  | - |  |  | 15,011 |  |  | - |  |  | 15,011 |
SQM,S,A, |  | Banco Estado |  |  | 15,000 |  |  | - |  |  | 15,000 |  |  | 15,011 |  |  | - |  |  | 15,011 |  |  | - |  |  | 15,011 |
SQM Salar S,A, |  | Banco Estado |  |  | - |  |  | 20,000 |  |  | 20,000 |  |  | - |  |  | 20,071 |  |  | 20,071 |  |  | - |  |  | 20,071 |
SQM Salar S,A, |  | Scotiabank Sud Americano |  |  | - |  |  | 20,000 |  |  | 20,000 |  |  | - |  |  | 20,072 |  |  | 20,072 |  |  | - |  |  | 20,072 |
SQM Industrial S,A, |  | Banco Estado |  |  | - |  |  | 20,000 |  |  | 20,000 |  |  | - |  |  | 20,064 |  |  | 20,064 |  |  | - |  |  | 20,064 |
SQM Industrial S,A, |  | Banco Estado |  |  | 18,000 |  |  | - |  |  | 18,000 |  |  | 18,026 |  |  | - |  |  | 18,026 |  |  | - |  |  | 18,026 |
Total |  |  |  |  | 63,000 |  |  | 100,000 |  |  | 163,000 |  |  | 63,059 |  |  | 100,509 |  |  | 163,568 |  |  | - |  |  | 163,568 |
Debtor |  |  |  | Creditor |  | Currency or |  |  |  |  |  |  |
Tax ID No |  | Company |  | Country |  | Tax ID No. |  | Financial institution |  | Country |  | adjustment index |  | Repayment |  | Effective rate |  | Nominal rate |
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 1.00 | % | 1.00 | %
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,030,000-7 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 4.3 | % | 4.3 | %
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 0.74 | % | 0.85 | %
93,007,000-9 |  | SQM.S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 0.74 | % | 0.84 | %
79,626,800-K |  | SQM Salar S.A. |  | Chile |  | 97,018,000-1 |  | Scotiabank Sud Americano |  | Chile |  | US$ |  | Upon maturity |  | 1.34 | % | 0.84 | %
79,947,100-0 |  | SQM Industrial S.A. |  | Chile |  | 97,030,000-7 |  | Banco Estado |  | Chile |  | US$ |  | Upon maturity |  | 1.20 | % | 1.20 | %
|  |  |  | 12/31/2016 |  | 1231/2016 |
Debtor |  | Creditor |  | Nominal amounts |  | Current amounts |
Company |  | Financial institution |  | Up to 90 days ThUS$ |  | 90 days to 1 year ThUS$ |  | Total ThUS$ |  | Up to 90 days ThUS$ |  | 90 days to 1 year ThUS$ |  | Subtotal ThUS$ |  | Borrowing costs ThUS$ |  | Total ThUS$ |
SQM.S.A. |  | Scotiabank Sud Americano |  |  | - |  |  | 20,000 |  |  | 20,000 |  |  | 30 |  |  | 20,000 |  |  | 20,030 |  |  | - |  |  | 20,030 |
SQM.S.A. |  | Banco Estado |  |  | - |  |  | 20,412 |  |  | 20,412 |  |  | - |  |  | 20,919 |  |  | 20,919 |  |  | - |  |  | 20,919 |
SQM.S.A. |  | Scotiabank Sud Americano |  |  | - |  |  | 17,000 |  |  | 17,000 |  |  | - |  |  | 17,057 |  |  | 17,057 |  |  | - |  |  | 17,057 |
SQM.S.A. |  | Scotiabank Sud Americano |  |  | - |  |  | 3,000 |  |  | 3,000 |  |  | - |  |  | 3,010 |  |  | 3,010 |  |  | - |  |  | 3,010 |
SQM Salar S.A. |  | Scotiabank Sud Americano |  |  | - |  |  | 20,000 |  |  | 20,000 |  |  | - |  |  | 20,042 |  |  | 20,042 |  |  | - |  |  | 20,042 |
SQM Industrial S.A. |  | Banco Estado |  |  | 20,000 |  |  | - |  |  | 20,000 |  |  | 20,212 |  |  | - |  |  | 20,212 |  |  | - |  |  | 20,212 |
Total |  |  |  |  | 20,000 |  |  | 80,412 |  |  | 100,412 |  |  | 20,242 |  |  | 81,028 |  |  | 101,270 |  |  | - |  |  | 101,270
Disclosure of detailed information about current maturities of unsecured obligations [Text Block] | As of December 31, 2017 and December 31, 2016, the detail of current unsecured interest-bearing obligations is composed of promissory notes and bonds, as follows: Bonds
Debtor |  |  |  |  |  |  |  |  |  | Periodicity |  |  |  |  |  |  |
Tax ID No. |  | Company |  | País |  | Number of registration or ID of the instrument |  | Series |  | Maturity date |  | Currency or adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  |  | Nominal rate |
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 04/21/2018 |  | US$ |  | Semiannual |  | Upon maturity |  | 1.47 | % |  |  | 5.50 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 01/28/2018 |  | US$ |  | Semiannual |  | Upon maturity |  | 3.17 | % |  |  | 4.38 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$300,000 |  | 0403//2018 |  | US$ |  | Semiannual |  | Upon maturity |  | 2.12 | % |  |  | 3.63 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 564 |  | H |  | 01/05/2018 |  | UF |  | Semiannual |  | Semiannual |  | 2.18 | % |  |  | 4.90 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 699 |  | O |  | 02/01/2018 |  | UF |  | Semiannual |  | Upon maturity |  | 2.80 | % |  |  | 3.80 | %
|  |  |  |  |  | 12/31/2017 |  | 12/31/2017 |
|  |  |  |  |  | Nominal maturities |  | Current maturities |
Company |  | Country |  | Series |  | Up to 90 days |  | 91 days to 1 year |  | Total |  | Up to 90 days |  | 91 days to 1 year |  | Subtotal |  | Bond issuance costs |  | Total |
|  |  |  |  |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
SQM S,A, |  | Chile |  | ThUS$250,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 2,674 |  |  | 2,674 |  |  | (385) |  |  | 2,289 |
SQM S,A, |  | Chile |  | ThUS$250,000 |  |  | - |  |  | - |  |  | - |  |  | 4,648 |  |  | - |  |  | 4,648 |  |  | (433) |  |  | 4,215 |
SQM S,A, |  | Chile |  | ThUS$300,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 2,658 |  |  | 2,658 |  |  | (615) |  |  | 2,043 |
SQM S,A, |  | Chile |  | H |  |  | - |  |  | - |  |  | - |  |  | 4,127 |  |  | - |  |  | 4,127 |  |  | (139) |  |  | 3,988 |
SQM S,A, |  | Chile |  | O |  |  | - |  |  | - |  |  | - |  |  | 1,026 |  |  | - |  |  | 1,026 |  |  | (67) |  |  | 959 |
Total |  |  |  |  |  |  | - |  |  | - |  |  | - |  |  | 9,801 |  |  | 5,332 |  |  | 15,133 |  |  | (1,639) |  |  | 13,494 |
Debtor |  |  |  |  |  |  |  |  |  | Periodicity |  |  |  |  |
Tax ID No. |  | Company |  | País |  | Number of registration or ID of the instrument |  | Series |  | Maturity date |  | Currency or adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  | Nominal rate |
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 10/21/2016 |  | US$ |  | Semiannual |  | Upon maturity |  | 1.97 | % |  | 5.50 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 01/28/2017 |  | US$ |  | Semiannual |  | Upon maturity |  | 3.61 | % |  | 4.38 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$300,000 |  | 10/03/2016 |  | US$ |  | Semiannual |  | Upon maturity |  | 2.48 | % |  | 3.63 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 446 |  | C |  | 12/01/2016 |  | UF |  | Semiannual |  | Semiannual |  | 1.34 | % |  | 4.00 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 564 |  | H |  | 01/05/2017 |  | UF |  | Semiannual |  | Semiannual |  | 2.47 | % |  | 4.90 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 700 |  | M |  | 02/01/2017 |  | UF |  | Semiannual |  | Upon maturity |  | 0.69 | % |  | 3.30 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 699 |  | O |  | 02/01/2017 |  | UF |  | Semiannual |  | Upon maturity |  | 3.00 | % |  | 3.80 | %
|  |  |  |  |  | 12/31/2016 |  | 12/31/2016 |
|  |  |  |  |  | Nominal maturities |  | Current maturities |
Company |  | Country |  | Series |  | Up to 90 days |  | 91 days to 1 year |  | Total |  | Up to 90 days |  | 91 days to 1 year |  | Subtotal |  | Bond issuance costs |  | Total |
|  |  |  |  |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
SQM S,A, |  | Chile |  | ThUS$250,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 2,674 |  |  | 2,674 |  |  | (386) |  |  | 2,288 |
SQM S,A, |  | Chile |  | ThUS$250,000 |  |  | - |  |  | - |  |  | - |  |  | 4,649 |  |  | - |  |  | 4,649 |  |  | (433) |  |  | 4,216 |
SQM S,A, |  | Chile |  | ThUS$300,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 2,658 |  |  | 2,658 |  |  | (615) |  |  | 2,043 |
SQM S,A, |  | Chile |  | C |  |  | - |  |  | 5,903 |  |  | 5,903 |  |  | - |  |  | 6,098 |  |  | 6,098 |  |  | - |  |  | 6,098 |
SQM S,A, |  | Chile |  | H |  |  | - |  |  | - |  |  | - |  |  | 3,726 |  |  | - |  |  | 3,726 |  |  | (139) |  |  | 3,587 |
SQM S,A, |  | Chile |  | M |  |  | 39,356 |  |  | - |  |  | 39,356 |  |  | 39,893 |  |  | - |  |  | 39,893 |  |  | (11) |  |  | 39,882 |
SQM S,A, |  | Chile |  | O |  |  | - |  |  | - |  |  | - |  |  | 926 |  |  | - |  |  | 926 |  |  | (67) |  |  | 859 |
Total |  |  |  |  |  |  | 39,356 |  |  | 5,903 |  |  | 45,259 |  |  | 49,194 |  |  | 11,430 |  |  | 60,624 |  |  | (1,651) |  |  | 58,973
Disclosure of detailed information about non current maturities of unsecured obligations [Text Block] | The breakdown of non-current unsecured interest-bearing bonds as of December 31, 2017 and December 31, 2016 is detailed as follows:
|  |  |  |  |  |  |  |  |  |  |  |  |  | Periodicity |  |  |  |  |
Tax ID No. |  | Company |  | Country |  | Number of registration or ID of the instrument |  | Series |  | Maturity date |  | Currency or adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  | Nominal rate |
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 04/21/2020 |  | US$ |  | Semiannual |  | Upon maturity |  | 5.50 | % | 5.50 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 01/28/2025 |  | US$ |  | Semiannual |  | Upon maturity |  | 4.38 | % | 4.38 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$300,000 |  | 04/03/2023 |  | US$ |  | Semiannual |  | Upon maturity |  | 3.63 | % | 3.63 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 564 |  | H |  | 01/05/2030 |  | UF |  | Semiannual |  | Semiannual |  | 4.90 | % | 6.01 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 699 |  | O |  | 02/01/2033 |  | UF |  | Semiannual |  | Upon maturity |  | 3.80 | % | 3.80 | %
Nominal non-current maturities 12/31/2017 |  | Non-current maturities 12/31/2017 |
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 |  |  | (517) |  |  | 249,483 |
MUS$250 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 250,000 |  |  | 250,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 250,000 |  |  | 250,000 |  |  | (2,636) |  |  | 247,364 |
MUS$300 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 300,000 |  |  | 300,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 300,000 |  |  | 300,000 |  |  | (2,618) |  |  | 297,382 |
H |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 174,367 |  |  | 174,367 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 174,367 |  |  | 174,367 |  |  | (1,532) |  |  | 172,835 |
O |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 65,388 |  |  | 65,388 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 65,388 |  |  | 65,388 |  |  | (945) |  |  | 64,443 |
Total |  |  | 250,000 |  |  | - |  |  | - |  |  | - |  |  | 789,755 |  |  | 1,039,755 |  |  | 250,000 |  |  | - |  |  | - |  |  | - |  |  | 789,755 |  |  | 1,039,755 |  |  | (8,248) |  |  | 1,031,507 |
Tax ID No.
| Company |  | Country |  | Number of registration or ID of the instrument |  | Series |  | Maturity date |  | Currency or adjustment index |  | Payment of interest |  | Repayment |  | Effective rate |  | Nominal rate |
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 04/21/2020 |  | US$ |  | Semiannual |  | Upon maturity |  | 5.94 | % | 5.50 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$250,000 |  | 01/28/2025 |  | US$ |  | Semiannual |  | Upon maturity |  | 4.62 | % | 4.38 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | - |  | ThUS$300,000 |  | 04/03/2023 |  | US$ |  | Semiannual |  | Upon maturity |  | 3.95 | % | 3.63 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 446 |  | C |  | 12/01/2026 |  | UF |  | Semiannual |  | Semiannual |  | 5.57 | % | 4.00 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 564 |  | H |  | 01/05/2030 |  | UF |  | Semiannual |  | Semiannual |  | 5.22 | % | 4.90 | %
93,007,000-9 |  | SQM S.A. |  | Chile |  | 699 |  | O |  | 02/01/2033 |  | UF |  | Semiannual |  | Upon maturity |  | 3.97 | % | 3.80 | %
Nominal non-current maturities 12/31/2016 |  |  | Non-current maturities 12/31/2016 |
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 |  |  | (904) |  |  | 249,096 |
MUS$250 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 250,000 |  |  | 250,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 250,000 |  |  | 250,000 |  |  | (3,069) |  |  | 246,931 |
MUS$300 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 300,000 |  |  | 300,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 300,000 |  |  | 300,000 |  |  | (3,230) |  |  | 296,770 |
C |  |  | 5,903 |  |  | 5,903 |  |  | 5,903 |  |  | 5,903 |  |  | 29,519 |  |  | 53,131 |  |  | 5,903 |  |  | 5,903 |  |  | 5,903 |  |  | 5,903 |  |  | 29,519 |  |  | 53,131 |  |  | - |  |  | 53,131 |
H |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 157,426 |  |  | 157,426 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 157,426 |  |  | 157,426 |  |  | (1,671) |  |  | 155,755 |
O |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 59,035 |  |  | 59,035 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 59,035 |  |  | 59,035 |  |  | (1,012) |  |  | 58,023 |
Total |  |  | 5,903 |  |  | 255,903 |  |  | 5,903 |  |  | 5,903 |  |  | 795,980 |  |  | 1,069,592 |  |  | 5,903 |  |  | 255,903 |  |  | 5,903 |  |  | 5,903 |  |  | 795,980 |  |  | 1,069,592 |  |  | (9,886) |  |  | 1,059,706 |
Disclosure of information about Series C bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 31, 2015, the Company has made the following payments with a charge to the Series C bonds:
Payments made |  | 12/31/2017 |  | 12/31/2016 |  | 12/31/2015 |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |
Principal payment |  |  | 57,290 |  |  | 5,729 |  |  | 5,729 |
Interest payment |  |  | 1,515 |  |  | 3,275 |  |  | 3,570 |
Disclosure of information about First issue single series bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 31, 2015, the Company has made the following payments with a charge to the Single series bonds:
Payments made |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |  | 12/31/2015 ThUS$ |
Payments of principal owed |  |  | - |  |  | 200,000 |  |  | - |
Payments of interest |  |  | - |  |  | 6,125 |  |  | 12,250 |
Disclosure of information about issue of series H bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 2015, the Company has made the following payments with a charge to the Series H bonds:
Payments made |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |  | 12/31/2015 ThUS$ |
Payments of interest, Series H bonds |  |  | 7,691 |  |  | 7,289 |  |  | 7,696 |
Disclosure of information about second issue of single series bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 31, 2015, the detail of payments charged to the line of single series bonds, second issue is as follows:
Payments made |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |  | 12/31/2015 ThUS$ |
Interest payment |  |  | 13,750 |  |  | 13,750 |  |  | 13,750 |
Disclosure of information about issue of series M and O bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 2015 the Company has made the following payments with a charge to the Series M and O bonds:
Payments made |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |  | 12/31/2015 ThUS$ |
Principal paymen, Series M bondst |  |  | 40,726 |  |  | - |  |  | - |
Payment of interest, Series M bonds |  |  | 667 |  |  | 1,242 |  |  | 1,248 |
Payment of interest, Series O bonds |  |  | 2,301 |  |  | 2,142 |  |  | 2,153 |
Disclosure of information about third issue of single series bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 31, 2015, the following payments have been made with a debit to the line of single-series bonds, third issue:
Payments made |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |  | 12/31/2015 ThUS$ |
Payment of interest |  |  | 10,875 |  |  | 10,875 |  |  | 10,875 |
Disclosure of information about fourth issue of single series bonds [Text Block] | As of December 31, 2017, December 31, 2016 and December 31, 2015, the following payments have been made.
Payments made |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |  | 12/31/2015 ThUS$ |
Payment of interest |  |  | 10,938 |  |  | 10,938 |  |  | 8,203 |
Disclosure of trade and other payables [text block] | Trade and other payables
|  | 12/31/2017 |  | 12/31/2016 |
|  | Current |  | Non- current |  | Total |  | Current |  | Non- current |  | Total |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Accounts payable |  |  | 195,858 |  |  | - |  |  | 195,858 |  |  | 200,215 |  |  | - |  |  | 200,215 |
Other accounts payable |  |  | 422 |  |  | - |  |  | 422 |  |  | 281 |  |  | - |  |  | 281 |
Total |  |  | 196,280 |  |  | - |  |  | 196,280 |  |  | 200,496 |  |  | - |  |  | 200,496 |
Disclosure of information about derivative instruments measured at fair value through profit or loss [Text Block] | This balance relates to derivative instruments measured at their fair value, which has generated balances against the Company. The detail of this type of instrument is as follows:
Financial liabilities at fair value through profit or loss |  |  |  | Effect on profit or loss as of 12/31/2017 |  |  |  | Effect on profit or loss as of 12/31/2016 |  |  |  | Effect on profit or loss as of 12/31/2015 |
|  | 12/31/2017 ThUS$ |  | ThUS$ |  | 12/31/2016 ThUS$ |  | ThUS$ |  | 12/31/2015 ThUS$ |  | ThUS$ |
Current |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivate instruments (options) |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 215 |  |  | 1,304 |
Derivative instruments (IRS) |  |  | - |  |  | - |  |  | - |  |  | (229) |  |  | 283 |  |  | (242) |
|  |  | - |  |  | - |  |  | - |  |  | (229) |  |  | 498 |  |  | 1,062 |
Disclosure of detailed information about categories of financial assets [Text Block] | Financial Assets
|  |  |  | 12/31/2017 |  | 12/31/2016 |
|  | Financial |  | Current |  | Non-current |  | Total |  | Current |  | Non-current |  | Total |
Description of financial assets |  | instruments |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |
Cash and cash equivalent |  |  |  |  | 630,438 |  |  | - |  |  | 630,438 |  |  | 514,669 |  |  | - |  |  | 514,669 |
Financial assets at fair value through profit or loss |  | Derivative instruments |  |  | 6,038 |  |  | 8,910 |  |  | 14,948 |  |  | 5,029 |  |  | 7,156 |  |  | 12,185 |
Total financial assets at fair value |  |  |  |  | 6,038 |  |  | 42,834 |  |  | 48,872 |  |  | 5,029 |  |  | 14,055 |  |  | 19,084 |
Disclosure of detailed information about categories of financial liabilities [Text Block] | Financial liabilities
|  |  |  | 12/31/2017 |  | 12/31/2016 |
|  | Financial |  | Current |  | Non-current |  | Total |  | Current |  | Non-current |  | Total |
Description of financial liabilities |  | instruments |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |  | Amount ThUS$ |
Trade payables due to related parties |  |  |  |  | 1,365 |  |  | - |  |  | 1,365 |  |  | 7 |  |  | - |  |  | 7 |
Financial liabilities at fair value through profit or loss |  | Derivative instruments |  |  | 43,266 |  |  | - |  |  | 43,266 |  |  | 18,901 |  |  | 33,732 |  |  | 52,633 |
Financial liabilities at fair value through profit or loss |  |  |  |  | 44,631 |  |  | - |  |  | 44,631 |  |  | 18,908 |  |  | 33,732 |  |  | 52,640 |
Financial liabilities measured at amortized cost |  | Bank borrowings |  |  | 163,568 |  |  | - |  |  | 163,568 |  |  | 101,270 |  |  | - |  |  | 101,270 |
Financial liabilities measured at amortized cost |  | Obligations with the public |  |  | 13,494 |  |  | 1,031,507 |  |  | 1,045,001 |  |  | 58,973 |  |  | 1,059,706 |  |  | 1,118,679 |
Financial liabilities measured at amortized cost |  | Trade and other payables |  |  | 196,280 |  |  | - |  |  | 196,280 |  |  | 200,496 |  |  | - |  |  | 200,496 |
Total financial liabilities measured at amortized cost |  |  |  |  | 373,342 |  |  | 1,031,507 |  |  | 1,404,849 |  |  | 360,739 |  |  | 1,059,706 |  |  | 1,420,445 |
Total financial liabilities |  |  |  |  | 417,973 |  |  | 1,031,507 |  |  | 1,449,480 |  |  | 379,647 |  |  | 1,093,438 |  |  | 1,473,085 |
Disclosure of fair value measurement [text block] | The valuation technique used for determining fair value of our hedging instruments is that indicated in Level 2.
|  |  | Fair value |  | Measurement methodology |
|  | 12/31/2017 |  | Level 1 |  | Level 2 |  | Level 3 |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |
Investment |  |  |  |  |  |  |  |  |  |  |  |  |
Investment SQM Australia |  |  | 24,746 |  |  | 24,746 |  |  | - |  |  | - |
Shares |  |  | 9,159 |  |  | 9,159 |  |  | - |  |  | - |
Non-hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Forwards |  |  | 2,744 |  |  | - |  |  | 2,744 |  |  | - |
Options |  |  | 110 |  |  | - |  |  | 110 |  |  | - |
Swaps |  |  | 3,184 |  |  | - |  |  | 3,184 |  |  | - |
Hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Swaps |  |  | 8,726 |  |  | - |  |  | 8,726 |  |  | - |
Deposits, more than 90 days |  |  | 360,941 |  |  |  |  |  | 360,941 |  |  | - |
Other |  |  | 249 |  |  | - |  |  | 249 |  |  | - |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |
Non-hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Forwards |  |  | 5,534 |  |  | - |  |  | 5,534 |  |  | - |
Options |  |  | 445 |  |  | - |  |  | 445 |  |  | - |
Hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Swaps |  |  | 37,287 |  |  | - |  |  | 37,287 |  |  | - |
Bank loans |  |  | 163,568 |  |  | - |  |  | 163,568 |  |  | - |
Non-guaranteed bonds |  |  | 1,039,956 |  |  | - |  |  | 1,039,956 |  |  | - |
Other |  |  | 5,945 |  |  | - |  |  | 5,945 |  |  | - |
|  | Fair value |  | Measurement methodology |
|  | 12/31/2016 |  | Level 1 |  | Level 2 |  | Level 3 |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |
Investment |  |  |  |  |  |  |  |  |  |  |  |  |
Shares |  |  | 6,879 |  |  | 6,879 |  |  | - |  |  | - |
Non-hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Forwards |  |  | 924 |  |  | - |  |  | 924 |  |  | - |
Options |  |  | 426 |  |  | - |  |  | 426 |  |  | - |
Swaps |  |  | 2,745 |  |  | - |  |  | 2,745 |  |  | - |
Hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Swaps |  |  | 8,090 |  |  | - |  |  | 8,090 |  |  | - |
Deposits, more than 90 days |  |  | 284,159 |  |  |  |  |  | 284,159 |  |  | - |
Other |  |  | 2,809 |  |  | - |  |  | 2,809 |  |  | - |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |
Non-hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Forwards |  |  | 871 |  |  | - |  |  | 871 |  |  | - |
Options |  |  | 363 |  |  | - |  |  | 363 |  |  | - |
Hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |
Swaps |  |  | 50,713 |  |  | - |  |  | 50,713 |  |  | - |
Bank loans |  |  | 101,270 |  |  | - |  |  | 101,270 |  |  | - |
Non-guaranteed bonds |  |  | 1,103,324 |  |  | - |  |  | 1,103,324 |  |  | - |
Other |  |  | 16,041 |  |  | - |  |  | 16,041 |  |  | - |
Disclosure of information about financial assets pledged as guarantee [Text Block] | As of December 31, 2017 and December 31, 2016, assets pledged as guarantees are as follows:
Restricted cash |  | 12/31/2017 ThUS$ |  | 12/31/2016 ThUS$ |
Isapre Norte Grande Ltda. |  |  | 771 |  |  | 685 |
Total |  |  | 771 |  |  | 685 |
Disclosure of detailed information about financial instruments [text block] | The detail of the Company’s instruments at carrying value and estimated fair value is as follows:
|  | 12/31/2017 |  | 12/31/2016 |
|  | Carrying value |  | Fair value |  | Carrying value |  | Fair value |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Cash and cash equivalents |  |  | 630,438 |  |  | 630,438 |  |  | 514,669 |  |  | 514,669 |
Current trade and other receivables |  |  | 446,875 |  |  | 446,875 |  |  | 368,761 |  |  | 368,761 |
Receivables due from related parties, current |  |  | 59,132 |  |  | 59,132 |  |  | 82,259 |  |  | 82,259 |
Other financial assets, current: |  |  |  |  |  |  |  |  |  |  |  |  |
- Time deposits |  |  | 360,941 |  |  | 360,941 |  |  | 284,160 |  |  | 284,160 |
- Derivative instruments |  |  | 6,038 |  |  | 6,038 |  |  | 4,095 |  |  | 4,095 |
- Hedging assets |  |  | - |  |  | - |  |  | 934 |  |  | 934 |
Total other current financial assets |  |  | 366,979 |  |  | 366,979 |  |  | 289,189 |  |  | 289,189 |
Non-Current Trade Receivables |  |  | 1,912 |  |  | 1,912 |  |  | 1,840 |  |  | 1,840 |
Other non-current financial assets: |  |  | 42,879 |  |  | 42,879 |  |  | 14,099 |  |  | 14,099 |
Total other non-current financial assets: |  |  | 42,879 |  |  | 42,879 |  |  | 14,099 |  |  | 14,099 |
Other financial liabilities, current: |  |  |  |  |  |  |  |  |  |  |  |  |
- Bank loans |  |  | 163,568 |  |  | 163,568 |  |  | 101,270 |  |  | 101,270 |
- Derivative instruments |  |  | 5,979 |  |  | 5,979 |  |  | 1,920 |  |  | 1,920 |
- Hedging liabilities |  |  | 37,287 |  |  | 37,287 |  |  | 16,981 |  |  | 16,981 |
- Unsecured obligations |  |  | 13,494 |  |  | 13,494 |  |  | 58,973 |  |  | 58,973 |
Other financial liabilities, current |  |  | 220,328 |  |  | 220,328 |  |  | 179,144 |  |  | 179,144 |
Current and non-current accounts payable |  |  | 196,280 |  |  | 196,280 |  |  | 200,496 |  |  | 200,496 |
Payables due to related parties, non-current |  |  | 1,365 |  |  | 1,365 |  |  | 7 |  |  | 7 |
Other non-current financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
- Bank loans |  |  | - |  |  | - |  |  | - |  |  | - |
- Unsecured obligations |  |  | 1,031,507 |  |  | 1,131,639 |  |  | 1,059,706 |  |  | 1,195,512 |
- Non-current hedging liabilities |  |  | - |  |  | - |  |  | 33,732 |  |  | 33,732 |
Other non-current financial liabilities: |  |  | 1,031,507 |  |  | 1,131,639 |  |  | 1,093,438 |  |  | 1,229,244 |

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