Annual report pursuant to Section 13 and 15(d)

Transactions with Officers and Directors (Details)

v2.4.1.9
Transactions with Officers and Directors (Details) (USD $)
12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Chief Executive Officer      
Employment agreement term 5 years    
Officers' Compensation $ 960,750us-gaap_OfficersCompensation
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
   
Annual base salary increase 5.00%linta_AnnualBaseSalaryIncrease
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
   
Annual target cash bonus 250.00%linta_AnnualTargetCashBonus
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
   
Termination Benefits Scenario Without Cause or Good Reason [Member] | Chief Executive Officer      
Severance payment multiple 1.5linta_SeverancePaymentMultiple
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioWithoutCauseOrGoodReasonMember
   
Pro rated severance payment 11,750,000linta_MaximumSeverancePaymentProRata
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioWithoutCauseOrGoodReasonMember
   
Fixed severance payments 17,500,000linta_FixedSeverancePayment
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioWithoutCauseOrGoodReasonMember
   
Additional vesting added upon termination 18 months    
Termination Benefits Scenario With No Good Reason [Member] | Chief Executive Officer      
Fixed severance payments 11,750,000linta_FixedSeverancePayment
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioWithNoGoodReasonMember
   
Termination Benefits Scenario For Death Or Disability [Member] | Chief Executive Officer      
Severance payment multiple 1.5linta_SeverancePaymentMultiple
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioForDeathOrDisabilityMember
   
Pro rated severance payment 11,750,000linta_MaximumSeverancePaymentProRata
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioForDeathOrDisabilityMember
   
Fixed severance payments 17,500,000linta_FixedSeverancePayment
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementScenarioAxis
= linta_TerminationBenefitsScenarioForDeathOrDisabilityMember
   
Performance Options And Performance Based Restricted Stock Units [Member] | Common Class B | Chief Executive Officer      
Term of options 7 years    
Weighted average remaining life - options outstanding 7 years    
Target Allocation [Abstract]      
2015 16,000,000linta_TargetAmountAllocatedInNextTwelveMonths
/ us-gaap_AwardTypeAxis
= linta_PerformanceOptionsAndPerformanceBasedRestrictedStockUnitsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
2016 17,000,000linta_TargetAmountAllocatedInYearTwo
/ us-gaap_AwardTypeAxis
= linta_PerformanceOptionsAndPerformanceBasedRestrictedStockUnitsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
2017 18,000,000linta_TargetAmountAllocatedInYearThree
/ us-gaap_AwardTypeAxis
= linta_PerformanceOptionsAndPerformanceBasedRestrictedStockUnitsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
2018 19,000,000linta_TargetAmountAllocatedInYearFour
/ us-gaap_AwardTypeAxis
= linta_PerformanceOptionsAndPerformanceBasedRestrictedStockUnitsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
2019 $ 20,000,000linta_TargetAmountAllocatedInYearFive
/ us-gaap_AwardTypeAxis
= linta_PerformanceOptionsAndPerformanceBasedRestrictedStockUnitsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Maximum percentage of grant of performance awards 50.00%linta_MaximumPercentageOfGrantOfPerformanceAwards
/ us-gaap_AwardTypeAxis
= linta_PerformanceOptionsAndPerformanceBasedRestrictedStockUnitsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Liberty Interactive common stock | Common Class B      
Term of options 4 years 6 months    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures 646,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Common Stock, Par or Stated Value Per Share $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
0.01us-gaap_CommonStockParOrStatedValuePerShare
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Weighted average remaining life - options outstanding 4 years 6 months    
Options granted 646,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Exercise price of options granted $ 29.87us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Liberty Interactive common stock | Common Class B | Chief Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures   646,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
 
Options granted   646,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
 
Liberty Ventures common stock      
Exercise price of options granted $ 38.10us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
   
Liberty Ventures common stock | Common Class B      
Term of options 6 years 7 months 6 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures 1,406,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Common Stock, Par or Stated Value Per Share $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
0.01us-gaap_CommonStockParOrStatedValuePerShare
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Weighted average remaining life - options outstanding 6 years 7 months 6 days    
Options granted 1,406,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Exercise price of options granted $ 37.63us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
   
Liberty Ventures common stock | Common Class B | Chief Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures   1,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
 
Options granted   1,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember