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EMPLOYEE BENEFITS (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure of employee benefits [text block] [Abstract] |
Disclosure of defined benefit plans [text block] |
|  | As of |  |  | As of |
|  | December 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
|  | ThUS$ |  |  | ThUS$ |
Retirements payments |  |  | 64,824 |  |  |  | 56,126 |
Resignation payments |  |  | 9,722 |  |  |  | 8,802 |
Other obligations |  |  | 19,024 |  |  |  | 17,437 |
Total liability for employee benefits |  |  | 93,570 |  |  |  | 82,365 |
Disclosure of net defined benefit liability (asset) [text block] |
|  |  |  |  | Increase (decrease) |  |  |  |  |  | Actuarial |  |  |  |  |  |  |
|  | Opening |  |  | current service |  |  | Benefits |  |  | (gains) |  |  | Currency |  |  | Closing |
|  | balance |  |  | provision |  |  | paid |  |  | losses |  |  | translation |  |  | balance |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
From January 1 to December 31, 2018 |  |  | 101,087 |  |  |  | (7,384 | ) |  |  | (6,018 | ) |  |  | 5,819 |  |  |  | (11,139 | ) |  |  | 82,365 |
From January 1 to December 31, 2019 |  |  | 82,365 |  |  |  | 11,242 |  |  |  | (4,390 | ) |  |  | 10,636 |  |  |  | (6,283 | ) |  |  | 93,570 |
Schedule of principal assumptions |
|  | For the period ended |
|  | December 31, |
Assumptions |  | 2019 |  |  | 2018 |
Discount rate |  |  | 3.13 | % |  |  | 4.27 | %
Expected rate of salary increase |  |  | 4.5 | % |  |  | 4.50 | %
Rate of turnover |  |  | 6.04 | % |  |  | 6.60 | %
Mortality rate |  |  | RV-2014 |  |  |  | RV-2014 |
Inflation rate |  |  | 2.8 | % |  |  | 2.7 | %
Retirement age of women |  |  | 60 |  |  |  | 60 |
Retirement age of men |  |  | 65 |  |  |  | 65 |
Disclosure of sensitivity analysis for actuarial assumptions [text block] |
|  | Effect on the liability |
|  | As of |  |  | As of |
|  | December 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
|  | ThUS$ |  |  | ThUS$ |
Discount rate |  |  |  |  |  |
Change in the accrued liability an closing for increase in 100 p.b. |  |  | (7,257 | ) |  |  | (6,538 | )
Change in the accrued liability an closing for decrease of 100 p.b. |  |  | 5,365 |  |  |  | 4,918 |
Rate of wage growth |  |  |  |  |  |  |  |
Change in the accrued liability an closing for increase in 100 p.b. |  |  | 4,989 |  |  |  | 4,750 |
Change in the accrued liability an closing for decrease of 100 p.b. |  |  | (7,159 | ) |  |  | (6,547 | )
Disclosure of additional information about defined benefit plans [text block] |
|  | As of December 31, 2019 |  |  | As of December 31, 2018 |
|  | ThUS$ |  |  | ThUS$ |
Profit-sharing and bonuses (*) |  |  | 91,153 |  |  |  | 81,222 |
| (*) | Accounts payables to employees (Note 20 letter b)
Schedule of employment expenses [Text Block] |
|  | For the year ended |
|  | December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Salaries and wages |  |  | 1,478,804 |  |  |  | 1,481,357 |  |  |  | 1,604,552 |
Short-term employee benefits |  |  | 147,576 |  |  |  | 132,394 |  |  |  | 145,245 |
Termination benefits |  |  | 54,256 |  |  |  | 54,007 |  |  |  | 85,070 |
Other personnel expenses |  |  | 114,126 |  |  |  | 152,211 |  |  |  | 188,767 |
Total |  |  | 1,794,762 |  |  |  | 1,819,969 |  |  |  | 2,023,634 |

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- Definition The disclosure of additional information about defined benefit plans necessary to meet the objectives of IAS 19. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 137 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_137&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The disclosure of defined benefit plans. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 138 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_138&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The disclosure of a net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_140_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The disclosure of a sensitivity analysis for significant actuarial assumptions used to determine the present value of a defined benefit obligation. [Refer: Actuarial assumptions [member]; Defined benefit obligation, at present value] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 145 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_145&doctype=Standard -URIDate 2019-03-27 + Details
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