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Organization - Schedule of Principal Subsidiaries of Company (Detail) (Subsidiaries [Member]) | 12 Months Ended
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Dec. 31, 2014
Cheerbright International Holdings, Ltd [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Jun. 13, 2006
Place of incorporation | British Virgin Islands
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_CheerbrightInternationalHoldingsLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Investment holding
Autohome (Hong Kong) Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Mar. 16, 2012
Place of incorporation | Hong Kong
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_AutohomeHkLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of online advertising services
Autohome Media Limited [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Oct. 18, 2013
Place of incorporation | Hong Kong
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_AutohomeMediaLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of online advertising services
Beijing Cheerbright Technologies Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Sep. 01, 2006
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_BeijingCheerbrightTechnologyCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of technical and consulting services
Autohome Shanghai Advertising Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Sep. 29, 2013
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_AutohomeShanghaiAdvertisingCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of online advertising services
Beijing Prbrownies Software Co., Ltd. (formerly known as Beijing Autohome Software Co., Ltd.) [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Nov. 12, 2013
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_BeijingPrbrowniesSoftwareCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of information technology services
Beijing Autohome Technologies Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Nov. 12, 2013
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_BeijingAutohomeTechnologiesCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of information technology services
Beijing Autohome Advertising Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Nov. 13, 2013
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_BeijingAutohomeAdvertisingCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of online advertising services
Guangzhou Autohome Advertising Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Nov. 25, 2013
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_GuangzhouAutohomeAdvertisingCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of online advertising services
Tianjin Autohome Technologies Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Oct. 20, 2014
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_TianjinAutohomeTechnologiesCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of information technology services
Autohome (Tianjin) Automobile Sales Co., Ltd. [Member] |
Organization [Line Items] |
Date of incorporation or acquisition | Oct. 20, 2014
Place of incorporation | PRC
Percentage of direct ownership by the Company | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = athm_AutohomeTianjinAutomobileSalesCompanyLimitedMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_SubsidiariesMember
Principal activities | Provision of automobile and component parts sales service

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Name: | dei_LegalEntityAxis=athm_AutohomeShanghaiAdvertisingCompanyLimitedMember
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