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Organization and Principal Activities (Details)
 12 Months Ended
Dec. 31, 2014
Nanjing Tuniu  
Principal subsidiaries and consolidated Affiliated Entities  
Economic interest held (as a percent) 100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= tour_NanjingTuniuTechnologyCompanyLimitedMember
Shanghai Tuniu International Travel Service Co., Ltd.  
Principal subsidiaries and consolidated Affiliated Entities  
Economic interest held (as a percent) 100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= tour_ShanghaiTuniuInternationalTravelServiceCompanyLimitedMember
Nanjing Tuniu International Travel Service Co., Ltd.  
Principal subsidiaries and consolidated Affiliated Entities  
Economic interest held (as a percent) 100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= tour_NanjingTuniuInternationalTravelServiceCompanyLimitedMember
Beijing Tuniu International Travel Service Co., Ltd.  
Principal subsidiaries and consolidated Affiliated Entities  
Economic interest held (as a percent) 100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= tour_BeijingTuniuInternationalTravelServiceCompanyLimitedMember
Nanjing Tuzhilv Tickets Sales Co., Ltd.  
Principal subsidiaries and consolidated Affiliated Entities  
Economic interest held (as a percent) 100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= tour_NanjingTuzhilvTicketsSalesCompanyLimitedMember
Tuniu (HK) Limited  
Principal subsidiaries and consolidated Affiliated Entities  
Equity interest held (as a percent) 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= tour_TuniuHKLimitedMember
Tuniu (Nanjing) Information Technology Co., Ltd.  
Principal subsidiaries and consolidated Affiliated Entities  
Equity interest held (as a percent) 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= tour_TuniuNanjingInformationTechnologyCompanyLimitedMember
Beijing Tuniu  
Principal subsidiaries and consolidated Affiliated Entities  
Equity interest held (as a percent) 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= tour_BeijingTuniuTechnologyCompanyLimitedMember