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OTHER NON-CURRENT LIABILITIES (Statutory severance and pre-notice obligations Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Jan. 01, 2017
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Disclosure of defined benefit plans [line items] |  |
Cumulative amount of actuarial losses recognized in other comprehensive income | $ 22.1 | $ 22.0
Actuarial assumption of discount rate |  |
Disclosure of defined benefit plans [line items] |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ (5.3) |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 6.6 |
Actuarial assumption of expected rates of compensation increases |  |
Disclosure of defined benefit plans [line items] |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 6.6 |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ (5.4) |
Minimum |  |
Disclosure of defined benefit plans [line items] |  |
Actuarial assumption of discount rates | 9.20% | 9.75%
Actuarial assumption of expected rates of salary increases | 8.00% | 7.25%
Maximum |  |
Disclosure of defined benefit plans [line items] |  |
Actuarial assumption of discount rates | 9.65% | 9.85%
Actuarial assumption of expected rates of salary increases | 10.00% | 7.50%

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- Definition Cumulative Actuarial Losses (Gains) Arising From Changes In Demographic And Financial Assumptions, Net Defined Benefit Liability (Asset) + References No definition available. + Details
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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 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 increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_145_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_145_a&doctype=Standard -URIDate 2017-03-09 + Details
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