Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

v3.8.0.1
Document And Entity Information - shares
9 Months Ended
Sep. 30, 2017
Oct. 31, 2017
Entity Registrant Name Liberty Interactive Corp  
Entity Central Index Key 0001355096  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Sep. 30, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Current Reporting Status Yes  
QVC Group Common Class A    
Entity Common Stock, Shares Outstanding   401,097,375
QVC Group Common Class B    
Entity Common Stock, Shares Outstanding   29,217,195
Ventures Group Common Class A    
Entity Common Stock, Shares Outstanding   81,351,297
Ventures Group Common Class B    
Entity Common Stock, Shares Outstanding   4,245,314