Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.19.2
Basis of Presentation (Details)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 09, 2018
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Liberty Media | Affiliated Entity          
Class of Stock [Line Items]          
Reimbursable expenses   $ 2.2 $ 2.2 $ 4.5 $ 3.9
Liberty Ventures | Series A common stock          
Class of Stock [Line Items]          
Shares redemption ratio 1        
Liberty Ventures | Series B common stock          
Class of Stock [Line Items]          
Shares redemption ratio 1