Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.8.0.1
Commitments and Contingencies - Additional Information (Details)
 1 Months Ended 12 Months Ended
Dec. 12, 2017
Mar. 03, 2017
USD ($)
Aug. 31, 2013
USD ($)
Dec. 31, 2017
USD ($)
satellite
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Loss Contingencies [Line Items]            
Number of replacement satellites | satellite       2    
Rent expense       $ 43,375,000 $ 46,968,000 $ 47,679,000
Sound Exchange, Inc | Pending Litigation            
Loss Contingencies [Line Items]            
Underpayment of royalty payment (exceeds) 10.00%          
Telephone Consumer Protection Act Suits | Pending Litigation            
Loss Contingencies [Line Items]            
Damages sought per violation   $ 500        
Surety Bond            
Loss Contingencies [Line Items]            
Loss Contingency, Estimate of Possible Loss       $ 45,000,000    
Minimum            
Loss Contingencies [Line Items]            
Operating lease obligations, term       1 year    
Minimum | Sound Exchange, Inc | Pending Litigation            
Loss Contingencies [Line Items]            
Compensatory damages sought     $ 50,000,000      
Maximum            
Loss Contingencies [Line Items]            
Operating lease obligations, term       15 years    
Maximum | Sound Exchange, Inc | Pending Litigation            
Loss Contingencies [Line Items]            
Compensatory damages sought     $ 100,000,000      
Maximum | Telephone Consumer Protection Act Suits | Pending Litigation            
Loss Contingencies [Line Items]            
Damages sought per willful violation   $ 1,500        
XM-5, FM-5, FM-6, XM-3, and XM-4            
Loss Contingencies [Line Items]            
Operating performance over design life       15 years    
XM-4            
Loss Contingencies [Line Items]            
Period beyond expected operating performance of design life for XM-4       5 years    
XM-4 | Maximum            
Loss Contingencies [Line Items]            
Additional payments required if XM-4 continues to operate above baseline specifications       $ 10,000,000