Annual report pursuant to Section 13 and 15(d)

Acquisition - Consideration Transferred (Details)

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Acquisition - Consideration Transferred (Details)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Feb. 01, 2019
USD ($)
$ / shares
shares
Dec. 31, 2019
$ / shares
shares
Dec. 31, 2018
$ / shares
Business Acquisition [Line Items]      
Common stock, par value (in dollars per share) | $ / shares   $ 0.001 $ 0.001
Pandora      
Business Acquisition [Line Items]      
Pandora common stock outstanding (shares) $ 272    
Exchange ratio (in shares per share) 1.44    
Price per share of Holdings common stock (in dollars per share) | $ / shares $ 5.83    
Value of common stock issued to Pandora stockholders $ 2,285    
Value of replacement equity awards attributable to pre-combination service 70    
Consideration of common stock and replacement equity awards for pre-combination service 2,355    
Sirius XM’s Pandora preferred stock investment (related party fair value instrument) canceled 524    
Total consideration for Pandora Acquisition 2,879    
Value attributed to par at $0.001 par value $ 1    
Common stock, par value (in dollars per share) | $ / shares $ 0.001    
Balance to capital in excess of par value $ 2,354    
Common Stock | Pandora      
Business Acquisition [Line Items]      
Common stock issued (in shares) | shares 392 392