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COMMITMENTS AND CONTINGENCIES (Details) - Property management commitments ¥ in Thousands | Dec. 31, 2025 CNY (¥)
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COMMITMENTS AND CONTINGENCIES |
Property management commitments, Less than 1 year | ¥ 63,556
Property management commitments, 1-5 years | 97,347
Property management commitments, More than 5 years | 26,721
Property management commitments | ¥ 187,624

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- Definition Amount of commitment classified as other to be paid through after fifth fiscal year following current fiscal year. + References No definition available. + Details
Name: | cha_OtherCommitmentToBePaidAfterFiveYear
Namespace Prefix: | cha_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of commitment classified as other to be paid in second through fifth fiscal year following current fiscal year. + References No definition available. + Details
Name: | cha_OtherCommitmentToBePaidAfterYearOneThroughFive
Namespace Prefix: | cha_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of commitment classified as other to be paid within one year following current fiscal year. + References No definition available. + Details
Name: | cha_OtherCommitmentToBePaidWithinOneYear
Namespace Prefix: | cha_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |