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Organization - Schedule of VIEs (Detail) - Consolidated VIEs [Member] | 12 Months Ended
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Dec. 31, 2021
Beijing Autohome Information Technology Co., Ltd. [Member] |
Variable Interest Entity [Line Items] |
Date of incorporation or acquisition | Aug. 28, 2006
Place of incorporation | PRC
Beijing Shengtuo Hongyuan Information Technology Co., Ltd. [Member] |
Variable Interest Entity [Line Items] |
Date of incorporation or acquisition | Nov. 08, 2010
Place of incorporation | PRC
Shanghai Tianhe Insurance Brokerage Co., Ltd. [Member] |
Variable Interest Entity [Line Items] |
Date of incorporation or acquisition | Sep. 21, 2017
Place of incorporation | PRC
Shanghai Jinwu Auto Technology Consultant Co Ltd [Member] |
Variable Interest Entity [Line Items] |
Date of incorporation or acquisition | Sep. 20, 2007
Place of incorporation | PRC

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- Definition State or Country Name where an entity is incorporated. + References No definition available. + Details
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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
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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
Name: | dei_LegalEntityAxis=athm_ShanghaiTianheInsuranceBrokerageCoLtdMember
Namespace Prefix: |
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- Details
Name: | dei_LegalEntityAxis=athm_ShanghaiJinwuAutoTechnologyConsultantCoLtdMember
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