Name:	cang_AllowanceForPrepaymentsAndOtherCurrentAssets
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Amount of asset related to consideration paid in advance for energy costs and hosting of mining services that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

No definition available.

Name:	cang_PrepaidEnergyCostsAndHostingOfMiningServicesCurrent
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Data Type:	xbrli:monetaryItemType
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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods and amount of other assets, after deducting the allowance that are expected to be realized or consumed within one year or the normal operating cycle, if l

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of asset related to consideration paid in advance for vehicles that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

No definition available.

Name:	cang_PrepaymentsForVehiclesCurrent
Namespace Prefix:	cang_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of asset related to receivable for disposal of discontinued operations that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

No definition available.

Name:	cang_ReceivableForDisposalOfDiscontinuedOperationsCurrent
Namespace Prefix:	cang_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of asset related to deposit made to mining machine hosting service provider.

No definition available.

Name:	cang_ServiceDepositMadeToMiningMachineHostingServiceProviderCurrent
Namespace Prefix:	cang_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477802/946-310-45-1

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Period Type:	instant

Amount of current assets classified as other.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Period Type:	instant

- References

No definition available.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.