Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information
9 Months Ended
Sep. 30, 2011
Oct. 31, 2011
Series A [Member]
Oct. 31, 2011
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   561,205,387 28,989,160
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 30, 2010
Document Fiscal Year Focus 2010    
Document Fiscal Period Focus Q3