Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Details)

v3.20.4
Related Party Transactions - Additional Information (Details)
$ / shares in Units, $ / shares in Units, shares in Millions, $ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
executive
director
$ / shares
shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2020
$ / shares
Feb. 29, 2020
USD ($)
board_member
ordinary_membership_unit
Feb. 10, 2020
USD ($)
May 25, 2017
CAD ($)
Related Party Transaction [Line Items]              
Preferred stock liquidation preference per share (CAD per share) | $ / shares $ 0.001            
Income (loss) from equity method investments $ (16) $ (21) $ (10)        
SoundCloud Holdings, LLC              
Related Party Transaction [Line Items]              
Number of board members | board_member         9    
SoundCloud Holdings, LLC              
Related Party Transaction [Line Items]              
Equity method investments           $ 75  
Management | Liberty Media | Executives              
Related Party Transaction [Line Items]              
Number of related party members on board of directors | executive 1            
Management | Liberty Media | Senior Advisor              
Related Party Transaction [Line Items]              
Number of related party members on board of directors | executive 1            
Management | Liberty Media | Director              
Related Party Transaction [Line Items]              
Number of related party members on board of directors | director 1            
Management | Liberty Media | Common Stock              
Related Party Transaction [Line Items]              
Related party ownership percentage 76.00%            
Equity Method Investee              
Related Party Transaction [Line Items]              
Notes receivable, related parties             $ 131
Equity Method Investee | Services Agreement              
Related Party Transaction [Line Items]              
Period of agreement 30 years            
Equity Method Investee | Services Agreement, Years 1 Through 5              
Related Party Transaction [Line Items]              
Payments receivable, percentage of gross revenue 25.00%            
Equity Method Investee | Advisory Services Agreement              
Related Party Transaction [Line Items]              
Period of agreement 30 years            
Payments receivable, percentage of gross revenue 5.00%            
Equity Method Investee | Sirius XM Canada              
Related Party Transaction [Line Items]              
Equity method investment, equity interest percentage 70.00%            
Equity method investment, voting interest percentage 33.00%            
Number of preferred shares owned (in shares) | shares 591            
Preferred stock liquidation preference per share (CAD per share) | $ / shares       $ 1      
Notes receivable, related parties $ 123 131          
Equity method investments 332 321          
Equity method investment, dividends, including reduction of investment 2 2 2        
Revenue from related parties 97 98 97        
Equity Method Investee | SoundCloud Holdings, LLC              
Related Party Transaction [Line Items]              
Number of board members appointed | board_member         2    
Income (loss) from equity method investments (1)            
Maximum | Equity Method Investee              
Related Party Transaction [Line Items]              
Proceeds from related party debt 11 1          
Series G Membership Units | Equity Method Investee | SoundCloud Holdings, LLC              
Related Party Transaction [Line Items]              
Equity method investments         $ 75    
Series G membership unit conversion ratio (ordinary membership unit per series G membership unit) | ordinary_membership_unit         1    
SoundCloud Holdings, LLC              
Related Party Transaction [Line Items]              
Revenue share expense 55 $ 40 $ 0        
Related party liabilities $ 24