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ACCOUNTS AND NOTES RECEIVABLE, NET - Accounts and notes receivable due (Details) - CNY (¥) ¥ in Thousands | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023
ACCOUNTS AND NOTES RECEIVABLE, NET |  |
Balance at beginning of the year | ¥ 188,356 | ¥ 134,569
(Reversal of) additional provision charged to expense | 61,937 | (9,666)
Write-off of accounts receivable | (6,801) | (133)
Balance at end of the year | ¥ 243,492 | ¥ 124,770

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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Amount of credit loss expense (reversal of expense) for financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(11)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
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Balance Type: | debit
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- References No definition available. + Details
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Balance Type: | na
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- Definition Represents the allowance for doubtful accounts and notes receivable current. + References No definition available. + Details
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Namespace Prefix: | vnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant