Quarterly report pursuant to Section 13 or 15(d)

Business & Basis of Presentation (Details)

v3.10.0.1
Business & Basis of Presentation (Details)
6 Months Ended
Jun. 30, 2018
segment
satellite_radio_system
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Number of satellite radio systems | satellite_radio_system 2
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]  
Number of reportable segments | segment 1
Liberty Media | Common Stock | Management  
Related Party Transactions [Abstract]  
Related party ownership percentage 70.00%
Minimum  
Related Party Transaction [Line Items]  
Length of prepaid subscriptions, term 3 months
Maximum  
Related Party Transaction [Line Items]  
Length of prepaid subscriptions, term 12 months