INVESTMENT IN ASSOCIATES AND JOINT VENTURES - Change in Investments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of changes in associates and joint ventures
Balance at beginning of year	$ 4,727	$ 2,973
Share of earnings for the year	118	248	$ 69
Foreign currency translation and other	167	219
Share of other comprehensive income	183	225
Distributions	(66)	(46)
Disposition of interest	(177)	0
Acquisitions	620	1,108
Balance at end of year	$ 5,572	$ 4,727	$ 2,973

Acquisitions Of Joint Ventures And Associates

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- Definition

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

+ References

No definition available.

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- Definition

Decrease Through Distributions, Joint Ventures And Associates

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No definition available.

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- Definition

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

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- Definition

Reconciliation Of Changes In Associates And Joint Ventures [Abstract]

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No definition available.

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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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- Definition

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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-Name IFRS
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Reference 4: 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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