INVESTMENTS (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT
Investments at 1 January	$ 25	$ 13
Additions	8	2
Fair value remeasurement	(10)	10
Impairment	(2)
Investments at 31 December	$ 21	$ 25

No definition available.

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- Definition

The gains (losses) recognised in other comprehensive income on remeasuring available-for-sale financial assets, before tax. [Refer: Financial assets available-for-sale]

+ References

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- Definition

The amount of impairment loss on financial assets. [Refer: Financial assets; Impairment loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2018-01-01
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- Definition

The amount of non-current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Non-current financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2018-01-01
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- Definition

Represents the fair value of additions to available for sale securities, including purchases, transfers and other additions, for the period.

+ References

No definition available.

+ Details

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