OTHER LIABILITIES - NON CURRENT AND CURRENT (Actuarial assumptions of defined benefit obligation) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Bottom of range
Disclosure of defined benefit plans [line items]
Estimate of contributions expected to be paid to plan for next five years	$ 25.1
Top of range
Disclosure of defined benefit plans [line items]
Estimate of contributions expected to be paid to plan for next five years	$ 32.6
Mexico
Disclosure of defined benefit plans [line items]
Discount rate	7.25%	8.75%
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	(9.40%)
Decrease in assumption, Impact on defined benefit obligation	11.70%
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	1.80%
Decrease in assumption, Impact on defined benefit obligation	(4.30%)
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	(1.30%)
Decrease in assumption, Impact on defined benefit obligation	1.60%
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	(1.70%)
Decrease in assumption, Impact on defined benefit obligation	1.70%

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]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2019-01-01
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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]]

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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
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-Paragraph 147
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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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
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The reasonably possible percentage of the increase in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]]

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