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Related Party Transactions - Additional Information (Detail) In Thousands, unless otherwise specified |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY | Dec. 31, 2013 CNY | Dec. 31, 2013 Telstra International HK Limited [Member] CNY | Dec. 31, 2014 Beijing Australian Telecommunications Technical Consulting Limited [Member] USD ($) | Dec. 31, 2014 Beijing Australian Telecommunications Technical Consulting Limited [Member] CNY | Dec. 31, 2013 Beijing Australian Telecommunications Technical Consulting Limited [Member] CNY | Dec. 31, 2014 Telstra International Limited [Member] USD ($) | Dec. 31, 2014 Telstra International Limited [Member] CNY | Dec. 31, 2013 Telstra International Limited [Member] CNY | Dec. 31, 2013 Autohome Media Limited [Member] CNY | Oct. 31, 2013 Autohome Media Limited [Member]
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Network maintenance services |  |  |  | 128 us-gaap_CostOfServicesMaintenanceCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalHkLimitedMember |  |  |  | $ 62 us-gaap_CostOfServicesMaintenanceCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 384 us-gaap_CostOfServicesMaintenanceCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 255 us-gaap_CostOfServicesMaintenanceCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember |  |
Acquisition date |  |  |  |  |  |  |  |  |  |  | 2013-10 |
The percentage of Autohome Media owned by the spouse of one of the Group's directors, prior to the acquisition |  |  |  |  |  |  |  |  |  |  |  | 50.00%athm_OwnershipOwnedOfAcquiredEntity / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_AutohomeMediaLimitedMember
Related party payables outstanding | 5 us-gaap_DueToRelatedPartiesCurrent | 33 us-gaap_DueToRelatedPartiesCurrent | 567 us-gaap_DueToRelatedPartiesCurrent |  | 0 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_BeijingAustralianTelecommunicationsTechnicalConsultingLimitedMember | 0 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_BeijingAustralianTelecommunicationsTechnicalConsultingLimitedMember | 149 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_BeijingAustralianTelecommunicationsTechnicalConsultingLimitedMember | 5 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 33 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 418 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 0 us-gaap_DueToRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_AutohomeMediaLimitedMember |
Executive services on a part-time basis |  |  |  |  | $ 35 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_BeijingAustralianTelecommunicationsTechnicalConsultingLimitedMember | 218 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_BeijingAustralianTelecommunicationsTechnicalConsultingLimitedMember | 149 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_BeijingAustralianTelecommunicationsTechnicalConsultingLimitedMember | $ 43 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 266 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember | 418 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = athm_TelstraInternationalLimitedMember |  |

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- Definition The percentage of Autohome Media owned by the spouse of one of the Group's directors, prior to the acquisition. + References No definition available. + Details
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- Definition Maintenance costs incurred and directly related to services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Expenditures for salaries for officers and non-officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold. + References No definition available. + Details
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