XML 136 R69.htm IDEA: XBRL DOCUMENT v2.4.1.9
Acquisitions (Other Acquisitions) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 12 Months Ended
May 31, 2014
Oct. 31, 2014
Nov. 30, 2014
May 31, 2013
Jul. 31, 2013
Sep. 30, 2013
Nov. 30, 2013
Sep. 30, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Business Acquisition [Line Items]                      
Goodwill                 $ 29,509us-gaap_Goodwill $ 4,628us-gaap_Goodwill $ 344,630us-gaap_Goodwill
Internet security business acquired in May 2014 [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired 60.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetSecurityBusinessOneMember		                    
Cash consideration 1,092qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetSecurityBusinessOneMember		                    
Goodwill 122us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetSecurityBusinessOneMember		                    
Internet security business acquired in October 2014 [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired   100.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetSecurityBusinessTwoMember		                  
Cash consideration   684qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetSecurityBusinessTwoMember		                  
Goodwill   289us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetSecurityBusinessTwoMember		                  
Internet service business acquired in November 2014 [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired     100.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceBusinessFiveMember		                
Cash consideration     1,302qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceBusinessFiveMember		                
Goodwill     912us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceBusinessFiveMember		                
Internet service business acquired in May 2013 [Member]                      
Business Acquisition [Line Items]                      
Cash consideration       1,790qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceBusinessTwoMember		              
Goodwill       1,248us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceBusinessTwoMember		              
Internet data center business ("Entity P") acquired in May 2013 [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired       51.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_EntityPMember		              
Cash consideration       3,257qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_EntityPMember		              
Goodwill       317us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_EntityPMember		              
Overseas internet service company acquired in July 2013 [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired         51.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember		            
Goodwill         8,319us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember		            
Overseas internet service company acquired in July 2013 [Member] | Chairman and Chief Executive Officer of the Company [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired         28.53%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember
/ qihu_ShareholdersAxis
= qihu_SellingShareholderOneMember		            
Overseas internet service company acquired in July 2013 [Member] | Ordinary shares [Member]                      
Business Acquisition [Line Items]                      
Business acquisition, value of shares issuable         7,864us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember
/ us-gaap_EquityInterestIssuedOrIssuableByTypeAxis
= us-gaap_CommonStockMember		            
Business acquisition, number of shares issuable         204,466us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember
/ us-gaap_EquityInterestIssuedOrIssuableByTypeAxis
= us-gaap_CommonStockMember		            
Overseas internet service company acquired in July 2013 [Member] | Ordinary shares [Member] | Chairman and Chief Executive Officer of the Company [Member]                      
Business Acquisition [Line Items]                      
Business acquisition, value of shares issuable         1,989us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember
/ us-gaap_EquityInterestIssuedOrIssuableByTypeAxis
= us-gaap_CommonStockMember
/ qihu_ShareholdersAxis
= qihu_SellingShareholderOneMember		            
Business acquisition, number of shares issuable         51,722us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember
/ us-gaap_EquityInterestIssuedOrIssuableByTypeAxis
= us-gaap_CommonStockMember
/ qihu_ShareholdersAxis
= qihu_SellingShareholderOneMember		            
Overseas internet service company acquired in July 2013 [Member] | ADS [Member] | Chairman and Chief Executive Officer of the Company [Member]                      
Business Acquisition [Line Items]                      
Business acquisition, number of shares issuable         34,481us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= qihu_OverseasInternetServiceCompanyMember
/ us-gaap_EquityInterestIssuedOrIssuableByTypeAxis
= qihu_AmericanDepositarySharesMember
/ qihu_ShareholdersAxis
= qihu_SellingShareholderOneMember		            
Internet service company with 80% equity interest owned by Group [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired           60.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceCompanyWithEightyPercentageEquityInterestOwnedByGroupMember		          
Cash consideration           7,966qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceCompanyWithEightyPercentageEquityInterestOwnedByGroupMember		          
Goodwill           8,762us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceCompanyWithEightyPercentageEquityInterestOwnedByGroupMember		          
Internet service company with 51% equity interest owned by Group [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired             51.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceCompanyWithFiftyOnePercentageEquityInterestOwnedByGroupMember		        
Cash consideration             10,000qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceCompanyWithFiftyOnePercentageEquityInterestOwnedByGroupMember		        
Goodwill             6,346us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= qihu_InternetServiceCompanyWithFiftyOnePercentageEquityInterestOwnedByGroupMember		        
Software development business acquired in September 2012 [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired               65.00%qihu_PercentageOfEconomicOwnershipSubsidiariesViesAndViesSubsidiaries
/ us-gaap_BusinessAcquisitionAxis
= qihu_SoftwareDevelopmentBusinessMember		      
Cash consideration               312qihu_BusinessCombinationCashConsideration
/ us-gaap_BusinessAcquisitionAxis
= qihu_SoftwareDevelopmentBusinessMember		      
Cash consideration, paid                 $ 127us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= qihu_SoftwareDevelopmentBusinessMember		 $ 185us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= qihu_SoftwareDevelopmentBusinessMember