Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.1.9
Stock-Based Compensation (Narrative) (Details) (USD $)
 9 Months Ended 12 Months Ended 3 Months Ended 0 Months Ended 1 Months Ended
Sep. 30, 2012
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2012
Feb. 27, 2014
Aug. 09, 2012
Apr. 12, 2012
Dec. 31, 2014
Jun. 24, 2010
Dec. 31, 2007
Dec. 31, 2000
Stock split, conversion ratio 0.05us-gaap_StockholdersEquityNoteStockSplitConversionRatio1                      
Number of shares reserved for issuance       47,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized 47,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized         45,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized 3,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized 1,900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Weighted average period of recognition related to unvested equity awards (in years)   2 years                    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate   0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate                    
Total unrecognized compensation cost related to unvested Liberty equity awards   $ 80,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized             $ 80,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value   91,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 76,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 339,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value   19,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue 16,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue 12,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue                
Minimum                        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term   1 year 3 months 18 days                    
Maximum                        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term   9 years                    
Liberty Interactive common stock                        
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost       17,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember 		               
Liberty Interactive common stock | Common Class A                        
Options granted   1,879,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		4,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		3,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		20,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		             
Weighted average grant-date fair value of options   $ 12.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 8.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 8.44us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 7.15us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		             
Issuance of common stock upon exercise of stock options   6,016,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		                   
WAEP exercised   $ 15.84us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		                   
WAEP of grants in the period   $ 29.19us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		                   
Outstanding options   24,900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		30,607,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		          24,900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Exercisable options   16,879,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            16,879,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Outstanding WAEP   $ 17.49us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 17.98us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		          $ 17.49us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price   $ 16.38us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            $ 16.38us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Aggregate intrinsic value of options outstanding   297,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            297,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Aggregate intrinsic value of options exercisable   220,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            220,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Liberty Interactive common stock | Common Class B                        
Options granted   646,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		                   
WAEP of grants in the period   $ 29.87us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		                   
Outstanding options   1,044,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		432,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		          1,044,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Exercisable options   398,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            398,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Outstanding WAEP   $ 24.78us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		$ 17.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		          $ 24.78us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price   $ 16.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            $ 16.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Aggregate intrinsic value of options outstanding   5,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            5,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Aggregate intrinsic value of options exercisable   5,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            5,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Liberty Ventures common stock                        
Stock split, conversion ratio           2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		0.05us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		       
WAEP exercised   $ 19.57us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		                   
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost       4,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		               
WAEP of grants in the period   $ 38.10us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		                   
Outstanding WAEP   $ 19.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		$ 28.71us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		          $ 19.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price   $ 18.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		            $ 18.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember 		     
Liberty Ventures common stock | Common Class A                        
Options granted   20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		7,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		36,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		905,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		             
Weighted average grant-date fair value of options   $ 16.55us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 57.37us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 27.29us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		$ 26.58us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		             
Issuance of common stock upon exercise of stock options   398,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		                   
Outstanding options   3,997,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		1,932,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		          3,997,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Exercisable options   3,094,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            3,094,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Aggregate intrinsic value of options outstanding   74,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            74,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Aggregate intrinsic value of options exercisable   58,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		            58,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		     
Liberty Ventures common stock | Common Class B                        
Options granted   1,406,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		                   
WAEP of grants in the period   $ 37.63us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		                   
Outstanding options   1,507,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		44,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		          1,507,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Exercisable options   101,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            101,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Outstanding WAEP   $ 36.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		$ 23.35us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		          $ 36.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price   $ 16.82us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            $ 16.82us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Aggregate intrinsic value of options outstanding   2,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            2,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Aggregate intrinsic value of options exercisable   2,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		            2,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Option Exchange                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value       $ 242,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_NonrecurringAdjustmentAxis
= linta_OptionExchangeMember 		               
2012 Plan | Minimum                        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term   7 years                    
Award vesting period   4 years                    
2012 Plan | Maximum                        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term   10 years                    
Award vesting period   5 years                    
Chief Executive Officer | Liberty Interactive common stock | Common Class B                        
Options granted                 646,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Weighted average grant-date fair value of options                 $ 10.50us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Chief Executive Officer | Liberty Ventures common stock | Common Class B                        
Options granted                 1,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		     
Weighted average grant-date fair value of options                 $ 15.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember