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OTHER EXPENSE (INCOME) OTHER EXPENSE (INCOME) - Impairment reversal (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment (reversals) charges	$ 2	$ 23	$ (87)	$ (313)
Non-current assets or disposal groups classified as held for sale [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment (reversals) charges	2	11	(87)	(325)
Intangible assets other than goodwill [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment (reversals) charges	$ 0	$ 12	$ 0	$ 12

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- Definition

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.

+ References

No definition available.

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- Definition

The amount of impairment loss, impairment gain or reversal of impairment loss that is recognised in profit or loss in accordance with paragraph 5.5.8 of IFRS 9 and that arises from applying the impairment requirements in Section 5.5 of IFRS 9.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2020-01-01
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