Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets (Narrative) (Details)

v2.4.1.9
Goodwill and Other Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets $ 504us-gaap_AmortizationOfIntangibleAssets $ 482us-gaap_AmortizationOfIntangibleAssets $ 449us-gaap_AmortizationOfIntangibleAssets
Impairment 7us-gaap_GoodwillImpairmentLoss 5us-gaap_GoodwillImpairmentLoss  
Goodwill, Impaired, Accumulated Impairment Loss 111us-gaap_GoodwillImpairedAccumulatedImpairmentLoss    
Digital commerce      
Finite-Lived Intangible Assets [Line Items]      
Impairment $ 7us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= linta_ECommerceMember
$ 5us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= linta_ECommerceMember