Annual report pursuant to Section 13 and 15(d)

Assets and Liabilities Measured at Fair Value - Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details)

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Assets and Liabilities Measured at Fair Value - Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details) - USD ($)
$ in Millions
1 Months Ended
Jun. 30, 2018
Dec. 31, 2021
Dec. 31, 2020
Mar. 09, 2018
Assets and liabilities measured at fair value        
Indemnification asset       $ 281
Recurring        
Assets and liabilities measured at fair value        
Cash equivalents   $ 149 $ 290  
Indemnification asset   324 345  
Financial instrument asset     23  
Debt   1,315 1,750  
Recurring | Fair Value, Inputs, Level 1 [Member]        
Assets and liabilities measured at fair value        
Cash equivalents   149 290  
Recurring | Significant Other Observable Inputs (Level 2)        
Assets and liabilities measured at fair value        
Indemnification asset   324 345  
Financial instrument asset     23  
Debt   $ 1,315 $ 1,750  
1.75% Exchangeable Senior Debentures due 2046        
Assets and liabilities measured at fair value        
Interest rate (as a percent)   1.75% 1.75%  
Securities repurchased 417,759      
Amount of securities repurchased $ 457      
GCI Liberty | 1.75% Exchangeable Senior Debentures due 2046        
Assets and liabilities measured at fair value        
Indemnification payment from GCI Liberty, Inc. $ 133