SHARE CAPITAL (Details) - ¥ / shares	Dec. 31, 2020	Dec. 31, 2019
SHARE CAPITAL
Shares authorized (in shares)	17,022,672,951	17,022,672,951
Par value per share	¥ 1.00	¥ 1.00

The number of shares authorised.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 79
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_79_a_i&doctype=Standard
-URIDate 2020-01-01

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