Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.20.2
Basis of Presentation (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 14, 2020
Aug. 21, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Basic of presentation              
Dividends paid to common shareholders   $ 633     $ 626    
Proceeds from sale of an alternative energy investment     $ 272   272    
Gain on sale of alternative energy investment     224   224    
LMC              
Basic of presentation              
Related Party Transaction, Amounts of Transaction     2 $ 2 7 $ 5  
Liberty Media Corporation and GCI Liberty, Inc.              
Basic of presentation              
Tax sharing payable     $ 125   $ 125   $ 95
CEO | LMC              
Basic of presentation              
Chief Executive Officer Compensation Allocation Percentage         19.00%    
Common Class A and B              
Basic of presentation              
Dividend per share, cash paid   $ 1.50          
Preferred shares issued per common share outstanding   0.03          
8.0% Series A Cumulative Redeemable Preferred Stock              
Basic of presentation              
Preferred Stock, Dividend Rate, Percentage 8.00% 8.00%          
Preferred stock par value   $ 0.01          
Liquidation preference per share $ 100 100          
Distribution ratio for the preferred share dividend   $ 3.00          
Liquidation preference   $ 1,300