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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |
Employee defined contribution plan expensed | $ 7,716 | $ 9,206
Depreciation of mining machines (in percent) | 0.00% |
Estimated useful lives of mining machines | 3 years |

X
- Definition Stated as a percentage, the estimated or actual value of the crypto mining asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost. + References No definition available. + Details
Name: | cang_CryptoAssetMiningMachinerySalvageValuePercentage
Namespace Prefix: | cang_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Useful life of mining machineries used in the normal conduct of business of crypto asset mining and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | cang_CryptoAssetMiningMachineryUsefulLife
Namespace Prefix: | cang_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration