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Common Stock (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Class of Stock [Line Items]        
Treasury stock acquired (shares) 1,943,300 5,065,454 5,388,655 18,174,839
Payments for Repurchase of Common Stock $ 783 $ 2,225 $ 2,021 $ 9,245
Remaining authorized repurchase amount $ 672   $ 672  
Share buybacks        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 1,833,928 5,006,943 5,092,677 17,597,370
Payments for Repurchase of Common Stock $ 776 $ 2,218 $ 1,963 $ 9,065
Share buybacks | Liberty Broadband        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 0 1,724,540 120,149 4,952,224
Payments for Repurchase of Common Stock $ 0 $ 796 $ 42 $ 2,602
Income tax withholding        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 15,261 14,595 148,075 304,070
Payments for Repurchase of Common Stock $ 7 $ 7 $ 58 $ 180
Exercise cost        
Class of Stock [Line Items]        
Treasury stock acquired (shares) 94,111 43,916 147,903 273,399