Quarterly report pursuant to Section 13 or 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
6 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Assets and liabilities measured at fair value    
Indemnification payment from liberty broadband $ 25  
Recurring    
Assets and liabilities measured at fair value    
Cash equivalents 944 $ 938
Indemnification asset 10 50
Debt 287 614
Recurring | Fair Value, Inputs, Level 1    
Assets and liabilities measured at fair value    
Cash equivalents 944 938
Recurring | Significant Other Observable Inputs (Level 2)    
Assets and liabilities measured at fair value    
Indemnification asset 10 50
Debt $ 287 $ 614
1.75% Exchangeable Senior Debentures due 2046    
Assets and liabilities measured at fair value    
Interest rate (as a percent) 1.75%  
Indemnification payment from liberty broadband $ 25  
Debt exchanged $ 251