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Common Stock (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Class of Stock [Line Items]        
Treasury stock acquired (shares) 761,011 1,943,300 3,650,218 5,388,655
Payments for Repurchase of Common Stock $ 222 $ 783 $ 1,099 $ 2,021
Remaining authorized repurchase amount $ 599   $ 599  
Share buybacks        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 695,494 1,833,928 3,426,918 5,092,677
Payments for Repurchase of Common Stock $ 218 $ 776 $ 1,048 $ 1,963
Share buybacks | Liberty Broadband        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 354,108 0 698,011 120,149
Payments for Repurchase of Common Stock $ 110 $ 0 $ 226 $ 42
Income tax withholding        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 12,804 15,261 144,363 148,075
Payments for Repurchase of Common Stock $ 4 $ 7 $ 51 $ 58
Exercise cost        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 52,713 94,111 78,937 147,903