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GOODWILL AND OTHER INTANGIBLE ASSETS - Gross Amount and Accumulated Impairment Losses of Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Impairments
Goodwill	$ 4,769	$ 4,769
Cost
Impairments
Goodwill	12,211
Accumulated impairment losses
Impairments
Goodwill	$ (7,442)

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

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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