Annual report pursuant to Section 13 and 15(d)

Goodwill (Details)

v3.20.4
Goodwill (Details)
12 Months Ended
Dec. 31, 2020
USD ($)
reporting_unit
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Oct. 16, 2020
USD ($)
Jun. 16, 2020
USD ($)
Business Acquisition [Line Items]          
Number of reporting units | reporting_unit 2        
Goodwill $ 3,122,000,000 $ 3,843,000,000 $ 2,290,000,000    
Impairment charges 956,000,000 0 0    
Accumulated impairment of goodwill since the merger 5,722,000,000        
Acquisition 235,000,000 1,553,000,000      
Simplecast          
Business Acquisition [Line Items]          
Goodwill         $ 17,000,000
Acquisition 17,000,000        
Stitcher          
Business Acquisition [Line Items]          
Goodwill       $ 218,000,000  
Acquisition 218,000,000        
Sirius XM          
Business Acquisition [Line Items]          
Goodwill 2,290,000,000 2,290,000,000 2,290,000,000    
Impairment charges 0        
Accumulated impairment of goodwill since the merger 4,766,000,000        
Acquisition 0 0      
Pandora          
Business Acquisition [Line Items]          
Goodwill 832,000,000 1,553,000,000 $ 0    
Impairment charges 956,000,000        
Acquisition $ 235,000,000 $ 1,553,000,000