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OTHER LIABILITIES - NON CURRENT AND CURRENT (Actuarial assumptions of defined benefit obligation) (Details) - USD ($) $ in Millions | 12 Months Ended |
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of defined benefit plans [line items] |  |
Discount rate | 1.00% |
Compensation growth rate | 1.00% |
Pension growth rate | 1.00% |
Life expectancy (period) | 1 year |
Bottom of range |  |
Disclosure of defined benefit plans [line items] |  |
Estimate of contributions expected to be paid to plan for next five years | $ 23.8 |
Top of range |  |
Disclosure of defined benefit plans [line items] |  |
Estimate of contributions expected to be paid to plan for next five years | $ 29.9 |
Argentina | Bottom of range |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 6.00% | 6.00%
Compensation growth rate | 2.00% | 2.00%
Argentina | Top of range |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 7.00% | 7.00%
Compensation growth rate | 3.00% | 3.00%
Mexico |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 8.75% | 7.75%
Compensation growth rate |  | 5.00%
Mexico | Bottom of range |  |
Disclosure of defined benefit plans [line items] |  |
Compensation growth rate | 6.00% |
Mexico | Top of range |  |
Disclosure of defined benefit plans [line items] |  |
Compensation growth rate | 7.00% |
Increase in assumption |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | (8.40%) |
Compensation growth rate | 1.40% |
Pension growth rate | (1.50%) |
Life expectancy | 3.80% |
Decrease in assumption |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 10.10% |
Compensation growth rate | (4.20%) |
Pension growth rate | 1.80% |
Life expectancy | (3.80%) |

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The expected rate of increases in pension that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The estimate of the expected contributions to be made to a defined benefit plan for the next annual reporting period. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 147 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_147_b&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 148 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_148_d_iii&doctype=Standard -URIDate 2017-03-09 + Details
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