Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information (USD $)
In Billions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Jun. 30, 2011
Jan. 31, 2012
Series A [Member]
Jan. 31, 2012
Series B [Member]
Entity Registrant Name Liberty Interactive Corporation      
Entity Central Index Key 0001355096      
Current Fiscal Year End Date --12-31      
Entity Filer Category Large Accelerated Filer      
Entity Common Stock, Shares Outstanding     545,894,233 28,989,160
Document Type 10-K      
Amendment Flag false      
Document Period End Date Dec. 31, 2011      
Document Fiscal Year Focus 2011      
Document Fiscal Period Focus FY      
Entity Well-known Seasoned Issuer Yes      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Public Float   $ 19.4