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OTHER LIABILITIES - NON CURRENT AND CURRENT (Actuarial assumptions of defined benefit obligation) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Bottom of range |  |
Disclosure of defined benefit plans [line items] |  |
Estimate of contributions expected to be paid to plan for next five years | $ 25.9 |
Top of range |  |
Disclosure of defined benefit plans [line items] |  |
Estimate of contributions expected to be paid to plan for next five years | $ 34.0 |
Mexico | Bottom of range |  |
Disclosure of defined benefit plans [line items] |  |
Compensation growth rate | 6.00% | 6.00%
Mexico | Top of range |  |
Disclosure of defined benefit plans [line items] |  |
Compensation growth rate | 7.00% | 7.00%
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%
Discount rate |  |
Disclosure of defined benefit plans [line items] |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |
Increase in assumption, Impact on defined benefit obligation | (10.00%) |
Decrease in assumption, Impact on defined benefit obligation | 12.30% |
Discount rate | Mexico |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 6.50% | 7.25%
Compensation growth rate |  |
Disclosure of defined benefit plans [line items] |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |
Increase in assumption, Impact on defined benefit obligation | 2.60% |
Decrease in assumption, Impact on defined benefit obligation | (1.80%) |
Pension growth rate |  |
Disclosure of defined benefit plans [line items] |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |
Increase in assumption, Impact on defined benefit obligation | (1.20%) |
Decrease in assumption, Impact on defined benefit obligation | 1.40% |
Life expectancy |  |
Disclosure of defined benefit plans [line items] |  |
Reasonably possible increase in actuarial assumption, Life expectancy | 1 year |
Reasonably possible decrease in actuarial assumption, Life expectancy | 1 year |
Increase in assumption, Impact on defined benefit obligation | (1.30%) |
Decrease in assumption, Impact on defined benefit obligation | 1.60% |

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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 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 147 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_147_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 148 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_148_d_iii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The reasonably possible percentage of the decrease in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_145_a&doctype=Standard -URIDate 2020-01-01 + Details
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