RELATED PARTY TRANSACTIONS RELATED PARTY TRANSACTIONS - Renumeration of Directors and Other Key Management (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Related Party [Abstract]
Salaries, incentives and short-term benefits	$ 18	$ 19
Share-based payments	54	50
Total	$ 72	$ 69

Key Management Personnel Compensation, Salaries, Incentives, And Short-term Employee Benefits

No definition available.

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- Definition

Related Party [Abstract]

+ References

No definition available.

+ Details

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- Definition

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2017-01-01
-Paragraph 17
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-URIDate 2017-03-09

+ Details

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- Definition

The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2017-01-01
-Paragraph 17
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2017-03-01&anchor=para_17_e&doctype=Standard
-URIDate 2017-03-09

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