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Tracking Stock (Details) (USD $)
In Millions, except Share data, unless otherwise specified
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0 Months Ended |
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Oct. 13, 2014
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Apr. 11, 2014
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Mar. 31, 2015
item
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Dec. 31, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Oct. 20, 2014
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Number of tracking stocks |
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2linta_Numberoftrackingstocks
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| Cash and cash equivalents |
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$ 2,350us-gaap_CashAndCashEquivalentsAtCarryingValue
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$ 2,306us-gaap_CashAndCashEquivalentsAtCarryingValue
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$ 1,162us-gaap_CashAndCashEquivalentsAtCarryingValue
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$ 902us-gaap_CashAndCashEquivalentsAtCarryingValue
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| FTD |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Equity Method Investment, Ownership Percentage |
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35.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_FTDMember
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| Liberty Interactive common stock |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Cash and cash equivalents |
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530us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
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422us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
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679us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
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595us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
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| Liberty Interactive common stock | HSN, Inc. |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Equity Method Investment, Ownership Percentage |
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38.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
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| Liberty Interactive common stock | Common Class A |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Common Stock, Shares, Issued |
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444,595,005us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
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447,451,702us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
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| Liberty Interactive common stock | Reattribution Transaction | Liberty Ventures common stock |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Ratio applied to the reattribution |
0.14217linta_StockholdersEquityReattributionRatio
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_RelatedPartyTransactionAxis
= linta_ReattributionTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= linta_VenturesGroupMember
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| Liberty Ventures common stock |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Cash and cash equivalents |
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$ 1,820us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
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$ 1,884us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
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$ 483us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
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$ 307us-gaap_CashAndCashEquivalentsAtCarryingValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
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| Liberty Ventures common stock | FTD |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Equity Method Investment, Ownership Percentage |
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35.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_FTDMember
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| Liberty Ventures common stock | Common Class A |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Stockholders' Equity Note, Stock Split, Conversion Ratio |
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2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
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| Common Stock, Shares, Issued |
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134,566,440us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
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134,525,874us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
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| Liberty Ventures common stock | Reattribution Transaction |
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| Targeted or Tracking Stock, Stock [Line Items] |
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| Common Stock, Shares, Issued |
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67,700,000us-gaap_CommonStockSharesIssued
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_RelatedPartyTransactionAxis
= linta_ReattributionTransactionMember
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