EARNINGS PER SHARE - Narrative (Details) - shares shares in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of earnings per share [Abstract]
Number of shares reserved for issue under options and contracts for sale of shares (in shares)	19	28	25
Antidilutive securities excluded from computation of earnings per share number of shares (in shares)	143	647	24

The number of shares reserved for issue under options and contracts for the sale of shares.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 79
-Subparagraph a
-Clause vii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_79_a_vii&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_SharesReservedForIssueUnderOptionsAndContractsForSaleOfShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant