Quarterly report pursuant to Section 13 or 15(d)

Information About Liberty's Operating Segments (Reconciliation Of Segment Adjusted OIBDA To Earnings (Loss) From Continuing Operations Before Income Taxes) (Details)

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Information About Liberty's Operating Segments (Reconciliation Of Segment Adjusted OIBDA To Earnings (Loss) From Continuing Operations Before Income Taxes) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Information About Liberty's Operating Segments    
Adjusted OIBDA $ 419linta_AdjustedOibda $ 434linta_AdjustedOibda
Stock-based compensation (15)us-gaap_ShareBasedCompensation (25)us-gaap_ShareBasedCompensation
Depreciation and amortization (168)us-gaap_DepreciationAndAmortization (163)us-gaap_DepreciationAndAmortization
Interest expense (95)us-gaap_InterestExpense (95)us-gaap_InterestExpense
Share of earnings (losses)ffiliates, net 3us-gaap_IncomeLossFromEquityMethodInvestments (2)us-gaap_IncomeLossFromEquityMethodInvestments
Realized and unrealized gains (losses) on financial instruments, net (4)us-gaap_UnrealizedGainLossOnSecurities (25)us-gaap_UnrealizedGainLossOnSecurities
Other, net 15us-gaap_OtherNonoperatingIncomeExpense 7us-gaap_OtherNonoperatingIncomeExpense
Earnings (loss) from continuing operations before income taxes $ 155us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ 131us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest