INVESTMENT IN ASSOCIATES AND JOINT VENTURES - Change in Investments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of changes in associates and joint ventures
Balance at beginning of year	$ 4,591	$ 5,572
Share of earnings for the year	224	(13)	$ 118
Foreign currency translation and other	(62)	(296)
Share of other comprehensive income	54	260
Distributions	(254)	(59)
Disposition of interest	(135)	(951)
Held for sale	(38)	0
Acquisitions	587	78
Balance at end of year	$ 4,967	$ 4,591	$ 5,572

Acquisitions Of Joint Ventures And Associates

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- Definition

Decrease (Increase) in Investment in Associates and Joint Ventures From Disposition Of Interests

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Decrease Through Distributions, Joint Ventures And Associates

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Increase (Decrease) Through Net Exchange Differences, Joint Ventures And Associates

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Investments Reclassified as Held for Sale

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- Definition

Reconciliation Of Changes In Associates And Joint Ventures [Abstract]

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The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The entity's share of the profit (loss) of associates and joint ventures accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method; Joint ventures [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The entity's share of the total comprehensive income of associates and joint ventures accounted for using the equity method. [Refer: Associates [member]; Joint ventures [member]; Investments accounted for using equity method]

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