INVESTMENTS IN ASSOCIATES - Amounts recognised in the balance sheet and income statement (Details) - USD ($) $ in Millions	12 Months Ended	24 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
Disclosure of associates [line items]
Trade investments	$ 103	$ 105		$ 105
Income statement profit (loss)	$ 1	$ (11)	$ 6
Bioventus
Disclosure of associates [line items]
Percentage of associate held	49.00%	49.00%		49.00%
Trade investments	$ 100	$ 102		$ 102
Income statement profit (loss)	$ 1	$ (11)

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.

No definition available.

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The amount of investments in associates accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method]

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The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

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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)]

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