Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v3.8.0.1
Document And Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2017
Jan. 31, 2018
Jun. 30, 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-K    
Document Period End Date Dec. 31, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 14.3
QVC Group Common Class A      
Entity Common Stock, Shares Outstanding   448,261,047  
QVC Group Common Class B      
Entity Common Stock, Shares Outstanding   29,203,895  
Ventures Group Common Class A      
Entity Common Stock, Shares Outstanding   81,687,188  
Ventures Group Common Class B      
Entity Common Stock, Shares Outstanding   4,455,308