Quarterly report pursuant to Section 13 or 15(d)

Earnings (Loss) Per Common Share (Earrings Per Share Basic and Diluted) (Details)

v2.4.1.9
Earnings (Loss) Per Common Share (Earrings Per Share Basic and Diluted) (Details)
In Millions, unless otherwise specified
3 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Apr. 11, 2014
Liberty Interactive common stock      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 4us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
2us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
 
Basic EPS (WA shares outstanding) 473us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
494us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
 
Potentially dilutive shares 7us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
10us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
 
Diluted EPS (WA shares outstanding) 480us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
504us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_InteractiveGroupMember
 
Liberty Ventures common stock      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Basic EPS (WA shares outstanding) 141us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
73us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
 
Potentially dilutive shares 2us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
1us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
 
Diluted EPS (WA shares outstanding) 143us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
74us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
 
Common Class A | Liberty Ventures common stock      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Stock split, conversion ratio     2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Common Class B | Liberty Ventures common stock      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Stock split, conversion ratio     2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
/ linta_EconomicPerformanceGroupAxis
= linta_VenturesGroupMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember