Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Narrative) (Details)

v2.4.1.9
Stockholders' Equity (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
9 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 3 Months Ended 0 Months Ended
Sep. 30, 2012
Dec. 31, 2012
Apr. 11, 2014
Feb. 27, 2014
Aug. 09, 2012
Apr. 12, 2012
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 13, 2014
Oct. 03, 2014
Oct. 20, 2014
Class of Stock [Line Items]                        
Preferred Stock, Shares Issued             0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued        
Stock split, conversion ratio 0.05us-gaap_StockholdersEquityNoteStockSplitConversionRatio1                      
Proceeds from Issuance of Common Stock   $ 328us-gaap_ProceedsFromIssuanceOfCommonStock                    
Liberty Ventures common stock                        
Class of Stock [Line Items]                        
Shares issued as dividend     1linta_CommonStockIssuedDividend
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
                 
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
           
Common Class A                        
Class of Stock [Line Items]                        
Share received in exchange             1linta_CommonStockSharesReceivedInExchangeForOneShareOfSeriesB
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
         
Common Class A | Liberty Interactive common stock                        
Class of Stock [Line Items]                        
Number of votes             1linta_NumberOfVotes
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
         
Common stock, shares authorized             4,000,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
4,000,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Common Stock, Shares, Issued             447,451,702us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
471,625,030us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Common Stock, Shares, Outstanding             447,451,702us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
471,625,030us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Shares reserved for future issuance upon exercise of stock options             24,900,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ 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
       
Stock Repurchased and Retired During Period, Shares   44,668,431us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
        27,356,993us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
46,305,637us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Stock Repurchased and Retired During Period, Value   815us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
        785us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
1,089us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Common Class A | Liberty Ventures common stock                        
Class of Stock [Line Items]                        
Number of votes             1linta_NumberOfVotes
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
         
Common stock, shares authorized             200,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
200,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Common Stock, Shares, Issued             134,525,874us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
70,761,208us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Common Stock, Shares, Outstanding             134,525,874us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
70,761,208us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
       
Shares reserved for future issuance upon exercise of stock options             4,000,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ 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
       
Stock split, dividends             2linta_CommonStockDividendsStockSplitNumberofShares
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
         
Subscription Agreement Amount (in dollars per share)   $ 35.99linta_SubscriptionAgreementAmount
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
            $ 35.99linta_SubscriptionAgreementAmount
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
     
Stock Issued During Period, Shares, Other                 9,000,000us-gaap_StockIssuedDuringPeriodSharesOther
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
     
Proceeds from Issuance of Common Stock                 $ 328us-gaap_ProceedsFromIssuanceOfCommonStock
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
     
Common Class B | Liberty Interactive common stock                        
Class of Stock [Line Items]                        
Number of votes             10linta_NumberOfVotes
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
         
Common stock, shares authorized             150,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
150,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
       
Common Stock, Shares, Issued             28,877,554us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
28,884,103us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
       
Common Stock, Shares, Outstanding             28,877,554us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
28,884,103us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
       
Shares reserved for future issuance upon exercise of stock options             1,000,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ 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
       
Common Class B | Liberty Ventures common stock                        
Class of Stock [Line Items]                        
Number of votes             10linta_NumberOfVotes
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
         
Common stock, shares authorized             7,500,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
7,500,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
       
Common Stock, Shares, Issued             6,991,127us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
2,885,378us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
       
Common Stock, Shares, Outstanding             6,991,127us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
2,885,378us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
       
Shares reserved for future issuance upon exercise of stock options             1,500,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ 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
       
Stock split, dividends             2linta_CommonStockDividendsStockSplitNumberofShares
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
         
Common Class C | Liberty Interactive common stock                        
Class of Stock [Line Items]                        
Common stock, shares authorized             4,000,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
         
Common Stock, Shares, Issued             0us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
         
Common Stock, Shares, Outstanding             0us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
         
Common Class C | Liberty Ventures common stock                        
Class of Stock [Line Items]                        
Common stock, shares authorized             200,000,000us-gaap_CommonStockSharesAuthorized
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
         
Common Stock, Shares, Issued             0us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
         
Common Stock, Shares, Outstanding             0us-gaap_CommonStockSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
         
Reattribution Transaction | Liberty Ventures common stock                        
Class of Stock [Line Items]                        
Common Stock, Shares, Issued                       67,671,232us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionAxis
= linta_ReattributionTransactionMember
Liberty Ventures common stock | Reattribution Transaction | Liberty Interactive common stock                        
Class of Stock [Line Items]                        
Ratio applied to the reattribution                   0.14217linta_StockholdersEquityReattributionRatio
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionAxis
= linta_ReattributionTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= linta_VenturesGroupMember
0.14217linta_StockholdersEquityReattributionRatio
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionAxis
= linta_ReattributionTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= linta_VenturesGroupMember
 
Liberty Ventures common stock | Reattribution Transaction | Liberty Ventures common stock                        
Class of Stock [Line Items]                        
Ratio applied to the reattribution                     0.14217linta_StockholdersEquityReattributionRatio
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionAxis
= linta_ReattributionTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= linta_VenturesGroupMember