Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

No definition available.

+ Details

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- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of current trade receivables. [Refer: Trade receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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Balance Type:	debit
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- Details

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- Details

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- Details

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- Details

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- Details

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TRADE RECEIVABLES AND NOTES RECEIVABLES - Ageing analysis of trade receivables (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
TRADE AND NOTES RECEIVABLES
Less: impairment allowance	¥ (933,563)	¥ (715,597)
Trade receivables	4,746,995	4,574,581
Cost
TRADE AND NOTES RECEIVABLES
Trade receivables	5,680,558	5,290,178
Cost \| Within 1 year
TRADE AND NOTES RECEIVABLES
Trade receivables	2,978,123	2,923,616
Cost \| Between 1 and 2 years
TRADE AND NOTES RECEIVABLES
Trade receivables	1,031,050	742,477
Cost \| Between 2 and 3 years
TRADE AND NOTES RECEIVABLES
Trade receivables	183,288	377,836
Cost \| Over 3 years
TRADE AND NOTES RECEIVABLES
Trade receivables	1,488,097	1,246,249
Provision for impairment
TRADE AND NOTES RECEIVABLES
Less: impairment allowance	¥ (933,563)	¥ (715,597)	¥ (659,261)