SHARE CAPITAL (Details) -Narrative - shares	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SHARE CAPITAL (Details) -Narrative [Line Items]
Proportion of voting rights held by non-controlling interests (in percent)		100.00%
Ordinary shares
SHARE CAPITAL (Details) -Narrative [Line Items]
Number of shares, issued under employee share schemes (in shares)	786,648,222	775,882,951	768,551,098

The proportion of the voting rights in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph 12
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_12_d&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_ProportionOfVotingRightsHeldByNoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration