FAIR VALUE OF FINANCIAL INSTRUMENTS - Other Financial Assets (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value Measurement [Abstract]
Current	$ 2,568	$ 3,229
Non-current	2,232	1,471
Total	$ 4,800	$ 4,700

Fair Value Measurement [Abstract]

No definition available.

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- Definition

The amount of current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets; Current financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_d&doctype=Standard
-URIDate 2017-03-09

+ Details

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- Definition

The amount of financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets]

+ References

+ Details

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- Definition

The amount of non-current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets]

+ References

+ Details

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