INTANGIBLE ASSETS - Schedule of Changes in Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance	$ 6,073	$ 5,170
Additions, net of disposals	96	55
Acquisitions through business combinations	8,412	1,227
Amortization	(442)	(166)
Foreign currency translation	103	(213)
Ending balance	14,242	6,073
Costs
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance	6,733	5,764
Additions, net of disposals	(25)	(36)
Acquisitions through business combinations	8,412	1,227
Amortization	0	0
Foreign currency translation	131	(222)
Ending balance	15,251	6,733
Accumulated Amortization and Impairment
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance	(660)	(594)
Additions, net of disposals	121	91
Acquisitions through business combinations	0	0
Amortization	(442)	(166)
Foreign currency translation	(28)	9
Ending balance	$ (1,009)	$ (660)

The increase in intangible assets other than goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
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The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill]

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The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

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The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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