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Common Stock (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Class of Stock [Line Items]
Treasury stock acquired (shares)	7,359,688	761,011	13,580,734	3,650,218
Payments for Repurchase of Common Stock	$ 2,113	$ 222	$ 4,366	$ 1,099
Remaining authorized repurchase amount	$ 252		$ 252
Share buybacks
Class of Stock [Line Items]
Treasury stock acquired (shares)	7,298,058	695,494	13,135,958	3,426,918
Payments for Repurchase of Common Stock	$ 2,099	$ 218	$ 4,273	$ 1,048
Share buybacks | Liberty Broadband
Class of Stock [Line Items]
Treasury stock acquired (shares)	893,798	354,108	2,528,059	698,011
Payments for Repurchase of Common Stock	$ 300	$ 110	$ 900	$ 226
Income tax withholding
Class of Stock [Line Items]
Treasury stock acquired (shares)	53,912	12,804	275,312	144,363
Payments for Repurchase of Common Stock	$ 14	$ 4	$ 93	$ 51
Exercise cost
Class of Stock [Line Items]
Treasury stock acquired (shares)	7,718	52,713	169,464	78,937

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