Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details)

v3.20.4
Stockholders' Equity (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 28, 2021
$ / shares
Jul. 23, 2014
shares
Dec. 31, 2020
USD ($)
Vote / shares
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Preferred stock, shares issued     0 0  
Payments for Repurchase of Common Stock | $     $ 318 $ 443 $ 466
Formula One Group          
Payments for Repurchase of Common Stock | $     69 24  
Liberty SiriusXM Group          
Payments for Repurchase of Common Stock | $     $ 249 $ 419 $ 466
Common Class A          
Votes per share | Vote / shares     1    
Number of shares received in exchange for a share of Series B     1    
Common Class A | Formula One Group          
Stock repurchased during period (Shares)     0 0 0
Common Class A | Braves Group          
Stock repurchased during period (Shares)     0 0 0
Common Class A | Liberty SiriusXM Group          
Stock repurchased during period (Shares)     4,000,000.0 0 0
Stock repurchased during period | $     $ 174    
Common Class B          
Votes per share | Vote / shares     10    
Common Class C          
Number of Shares Issued During The Period For Each Share of Series A and Series B Stock Held By Shareholders Prior To The Distribution   2      
Votes per share | Vote / shares     0    
Common Class C | Formula One Group          
Stock repurchased during period (Shares)     0 0 0
Common Class C | Braves Group          
Stock repurchased during period (Shares)     0 0 0
Common Class C | Liberty SiriusXM Group          
Stock repurchased during period (Shares)     3,800,000 11,000,000.0 10,800,000
Stock repurchased during period | $     $ 144 $ 443 $ 466
Sirius XM Holdings          
Common stock, dividends declared | $ / shares     $ 0.058564    
Payments of Dividends | $     $ 237 226 201
Dividend paid to parent company | $     $ 173 $ 157 $ 143
Sirius XM Holdings | Subsequent Event          
Common stock, dividends declared | $ / shares $ 0.014641