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GOODWILL AND OTHER INTANGIBLE ASSETS - Gross Amount and Accumulated Impairment Losses of Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Impairments
Goodwill	$ 1,176	$ 1,330
Cost
Impairments
Goodwill	8,618
Accumulated impairment losses
Impairments
Goodwill	$ (7,442)

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The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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