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
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Mar. 09, 2018
Assets and liabilities measured at fair value      
Indemnification asset     $ 281
Indemnification payment from liberty broadband $ 45    
Recurring      
Assets and liabilities measured at fair value      
Cash equivalents 726 $ 938  
Indemnification asset   50  
Debt 219 614  
Recurring | Fair Value, Inputs, Level 1      
Assets and liabilities measured at fair value      
Cash equivalents 726 938  
Recurring | Significant Other Observable Inputs (Level 2)      
Assets and liabilities measured at fair value      
Indemnification asset   50  
Debt $ 219 $ 614  
1.75% Exchangeable Senior Debentures due 2046      
Assets and liabilities measured at fair value      
Interest rate (as a percent) 1.75% 1.75%  
Indemnification payment from liberty broadband $ 45    
Debt exchanged $ 330