Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Revenue recognition - Disaggregation of revenue - SIRIUS XM (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Revenue recognition - Disaggregation of revenue - SIRIUS XM (Details)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Subscriber  
Revenue disaggregated by source  
Revenue $ 4,594
SIRIUS XM | Liberty Sirius XM Group  
Revenue disaggregated by source  
Revenue $ 5,771
Activation fees, recognition period 1 month
SIRIUS XM | Subscriber | Liberty Sirius XM Group  
Revenue disaggregated by source  
Revenue $ 4,594
SIRIUS XM | Advertising | Liberty Sirius XM Group  
Revenue disaggregated by source  
Revenue 188
SIRIUS XM | Equipment | Liberty Sirius XM Group  
Revenue disaggregated by source  
Revenue 155
SIRIUS XM | Music Royalty and Other | Liberty Sirius XM Group  
Revenue disaggregated by source  
Revenue $ 834
Minimum | SIRIUS XM | Liberty Sirius XM Group  
Revenue disaggregated by source  
Subscription period 3 months
Maximum | SIRIUS XM | Liberty Sirius XM Group  
Revenue disaggregated by source  
Subscription period 12 months