Annual report pursuant to Section 13 and 15(d)

Investments In Affiliates Accounted For Using The Equity Method (HSN, Inc.'s Consolidated Balance Sheets) (Details) (Imported)

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Investments In Affiliates Accounted For Using The Equity Method (HSN, Inc.'s Consolidated Balance Sheets) (Details) (Imported) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2014
Sep. 30, 2013
Current assets $ 5,548us-gaap_AssetsCurrent $ 4,426us-gaap_AssetsCurrent      
Property and equipment, net 1,093us-gaap_PropertyPlantAndEquipmentNet 1,208us-gaap_PropertyPlantAndEquipmentNet      
Goodwill 5,404us-gaap_Goodwill 5,872us-gaap_Goodwill 5,907us-gaap_Goodwill    
Assets of discontinued operations, noncurrent   6,442us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets      
Other assets, at cost, net of accumulated amortization 65us-gaap_OtherAssetsNoncurrent 80us-gaap_OtherAssetsNoncurrent      
Total assets 18,641us-gaap_Assets 24,676us-gaap_Assets      
Current liabilities 3,739us-gaap_LiabilitiesCurrent 3,756us-gaap_LiabilitiesCurrent      
Deferred income taxes 1,849us-gaap_DeferredTaxLiabilitiesNoncurrent 2,001us-gaap_DeferredTaxLiabilitiesNoncurrent      
Long-term debt 7,105us-gaap_LongTermDebtNoncurrent 6,106us-gaap_LongTermDebtNoncurrent      
Noncurrent liabilities of discontinued operations   1,187us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent      
Other liabilities 168us-gaap_OtherLiabilitiesNoncurrent 191us-gaap_OtherLiabilitiesNoncurrent      
Noncontrolling interests 107us-gaap_MinorityInterest 4,499us-gaap_MinorityInterest      
Equity 5,673us-gaap_StockholdersEquity 6,936us-gaap_StockholdersEquity      
Total liabilities and equity 18,641us-gaap_LiabilitiesAndStockholdersEquity 24,676us-gaap_LiabilitiesAndStockholdersEquity      
HSN, Inc.          
Current assets       863us-gaap_AssetsCurrent
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
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773us-gaap_AssetsCurrent
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Property and equipment, net       180us-gaap_PropertyPlantAndEquipmentNet
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171us-gaap_PropertyPlantAndEquipmentNet
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Goodwill       10us-gaap_Goodwill
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= linta_HsnIncMember
10us-gaap_Goodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= linta_HsnIncMember
Intangible assets       262us-gaap_IntangibleAssetsNetExcludingGoodwill
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= linta_HsnIncMember
266us-gaap_IntangibleAssetsNetExcludingGoodwill
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Other assets, at cost, net of accumulated amortization       14us-gaap_OtherAssetsNoncurrent
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= linta_HsnIncMember
6us-gaap_OtherAssetsNoncurrent
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Total assets       1,329us-gaap_Assets
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1,226us-gaap_Assets
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= linta_HsnIncMember
Current liabilities       474us-gaap_LiabilitiesCurrent
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412us-gaap_LiabilitiesCurrent
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Deferred income taxes       76us-gaap_DeferredTaxLiabilitiesNoncurrent
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= linta_HsnIncMember
90us-gaap_DeferredTaxLiabilitiesNoncurrent
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Long-term debt       216us-gaap_LongTermDebtNoncurrent
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= linta_HsnIncMember
231us-gaap_LongTermDebtNoncurrent
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
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Other liabilities       15us-gaap_OtherLiabilitiesNoncurrent
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11us-gaap_OtherLiabilitiesNoncurrent
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Equity       548us-gaap_StockholdersEquity
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482us-gaap_StockholdersEquity
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Total liabilities and equity       $ 1,329us-gaap_LiabilitiesAndStockholdersEquity
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$ 1,226us-gaap_LiabilitiesAndStockholdersEquity
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= linta_HsnIncMember