COMMITMENTS - CAPITAL COMMITMENTS (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2020	Dec. 31, 2019
COMMITMENTS [abstract]
Contracted but not provided for	¥ 444,270	¥ 804,298
Authorized but not contracted for	505,730	1,178,032
Total capital commitments	¥ 950,000	¥ 1,982,330

No definition available.

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- Definition

The amount of capital commitments that have been authorised by the entity, but for which the entity has not entered into a contract. [Refer: Capital commitments]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2020-01-01

+ Details

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- Definition

The amount of future capital expenditures that the entity is committed to make.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

+ References

+ Details

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