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ASSETS AND LIABILITIES CLASSIFIED AS HELD FOR SALE (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 14, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets and Liabilities Classified As Held For Sale [Line Items]
Disposal of investments in associates and joint ventures		$ 135	$ 1,289	$ 0
Classification of assets as held for sale | Colombian regulated distribution operation
Assets and Liabilities Classified As Held For Sale [Line Items]
Ownership and voting Interest	17.00%
Disposal of investments in associates and joint ventures	$ 90

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- Definition

[Line Items] for Assets and Liabilities Classified As Held For Sale [Table]

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- Definition

Ownership and Voting Interest Held In Associate And Joint Venture

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The cash inflow from sales of investments accounted for using the equity method. [Refer: Investments accounted for using equity method]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_16&doctype=Standard
-URIDate 2019-03-27

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