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Investments In Affiliates Accounted For Using The Equity Method (Details) (USD $)
In Millions, unless otherwise specified
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Dec. 31, 2014
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Dec. 31, 2013
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| Equity Method Investments and Operating Activities Segment [Line Items] |
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| Investments in affiliates, accounted for using the equity method |
$ 1,633us-gaap_EquityMethodInvestments
|
$ 1,237us-gaap_EquityMethodInvestments
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| HSN, Inc. |
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| Equity Method Investments and Operating Activities Segment [Line Items] |
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| Percentage ownership |
38.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
|
|
| FTD |
|
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| Equity Method Investments and Operating Activities Segment [Line Items] |
|
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| Percentage ownership |
35.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_FTDMember
|
|
| Liberty Interactive common stock |
|
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| Equity Method Investments and Operating Activities Segment [Line Items] |
|
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| Investments in affiliates, accounted for using the equity method |
375us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
|
343us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
|
| Liberty Interactive common stock | HSN, Inc. |
|
|
| Equity Method Investments and Operating Activities Segment [Line Items] |
|
|
| Percentage ownership |
38.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
|
|
| Equity Method Investment, Quoted Market Value |
1,521us-gaap_EquityMethodInvestmentQuotedMarketValue
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
|
|
| Investments in affiliates, accounted for using the equity method |
328us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
|
293us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
|
| Liberty Interactive common stock | Equity method investment, other |
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| Equity Method Investments and Operating Activities Segment [Line Items] |
|
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| Investments in affiliates, accounted for using the equity method |
47us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_EquityMethodInvestmentOtherMember
|
50us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_EquityMethodInvestmentOtherMember
|
| Liberty Ventures common stock |
|
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| Equity Method Investments and Operating Activities Segment [Line Items] |
|
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| Investments in affiliates, accounted for using the equity method |
1,258us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
|
894us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
|
| Liberty Ventures common stock | Equity method investment, other |
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| Equity Method Investments and Operating Activities Segment [Line Items] |
|
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| Investments in affiliates, accounted for using the equity method |
389us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_EquityMethodInvestmentOtherMember
|
417us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_EquityMethodInvestmentOtherMember
|
| Liberty Ventures common stock | Expedia |
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| Equity Method Investments and Operating Activities Segment [Line Items] |
|
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| Percentage ownership |
18.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_ExpediaMember
|
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| Equity Method Investment, Quoted Market Value |
1,992us-gaap_EquityMethodInvestmentQuotedMarketValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_ExpediaMember
|
|
| Investments in affiliates, accounted for using the equity method |
514us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_ExpediaMember
|
477us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_ExpediaMember
|
| Liberty Ventures common stock | FTD |
|
|
| Equity Method Investments and Operating Activities Segment [Line Items] |
|
|
| Percentage ownership |
35.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_FTDMember
|
|
| Equity Method Investment, Quoted Market Value |
355us-gaap_EquityMethodInvestmentQuotedMarketValue
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_FTDMember
|
|
| Investments in affiliates, accounted for using the equity method |
$ 355us-gaap_EquityMethodInvestments
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_FTDMember
|
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