Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Details)

v3.8.0.1
Commitments And Contingencies (Details) - USD ($)
$ in Millions
 1 Months Ended
Aug. 31, 2013
Mar. 31, 2018
Loss Contingencies [Line Items]    
Compensation guarantee aggregate total   $ 223
Amounts payable under guarantee in 2018   110
Amounts payable under guarantee in 2019   45
Amounts payable under guarantee in 2020   32
Amounts payable under guarantee in 2021   34
Amount payable under guarantee, thereafter   $ 2
Minimum | Pending Litigation | Sound exchange Lawsuit [Member] | SIRIUS XM    
Loss Contingencies [Line Items]    
Damages sought $ 50  
Maximum | Pending Litigation | Sound exchange Lawsuit [Member] | SIRIUS XM    
Loss Contingencies [Line Items]    
Damages sought $ 100