Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.19.1
Basis of Presentation (Details)
$ in Millions
3 Months Ended
Dec. 31, 2018
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Mar. 09, 2018
item
Basic of presentation        
Number Of Tracking Stock | item       2
LMC        
Basic of presentation        
Related Party Transaction, Amounts of Transaction   $ 2 $ 3  
GCI Liberty        
Basic of presentation        
Tax sharing payable   112    
GCI Liberty | Other Current Liabilities        
Basic of presentation        
Tax sharing payable   37    
Retained Earnings        
Basic of presentation        
Reclassification   $ (197) (3,530)  
Liberty Ventures common stock | Common Class A        
Basic of presentation        
Share exchange ratio       1
Liberty Ventures common stock | Common Class B        
Basic of presentation        
Share exchange ratio       1
Transfer to entity under common control | QVC Group        
Basic of presentation        
Ownership interest transferred 100      
Reclassification Of Working Capital Categories In Operating Activities Of Statement Of Cash Flows        
Basic of presentation        
Reclassification of prior period immaterial error     $ 281