TRADE RECEIVABLES - Additional Information (Details) - CNY (¥)	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of TRADE RECEIVABLES [Line Items]
Allowance of doubtful accounts on trade receivables	¥ 495,510,000	¥ 426,849,000
Expected credit loss rate	13.00%	30.00%
Five Largest Customers [Member]
Disclosure Of TRADE RECEIVABLES [Line Items]
Expected credit loss rate	42.00%	97.00%

The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph IG20D
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 35N
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35N&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_ExpectedCreditLossRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant