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DEFERRED INCOME TAX (Changes in deferred income tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax [Abstract]
At the beginning of the year	$ (523,209)	$ (511,456)
Acquisition of business (note 3)	13,686	0
Translation differences	(1,052)	3,351
Effect of changes in tax law on deferred income tax	7,455	2,028	$ 3,080
Withholding tax on dividend distributions	0	(2,690)	4,177
Credits (Charges) directly to other comprehensive income	4,808	2,379
Deferred tax (charge) credit	106,047	(16,821)
At the end of the year	$ (392,265)	$ (523,209)	$ (511,456)

X

- Definition

The amount of deferred tax expense or income relating to tax rate changes or the imposition of new taxes. [Refer: Deferred tax expense (income)]

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The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

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The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]

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The increase (decrease) in deferred tax liability (asset) resulting from business combinations. [Refer: Deferred tax liability (asset)]

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The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

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