Common Stock (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended				6 Months Ended
	Jul. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Class of Stock [Line Items]
Treasury stock acquired (shares)		7,370,289		5,516,312		13,109,385	11,667,008
Value of treasury stock shares repurchased/withheld		$ 3,687	$ 3,333	$ 3,516	$ 3,652	$ 7,020	$ 7,168
Remaining authorized repurchase amount		$ 673				$ 673
Share buybacks
Class of Stock [Line Items]
Treasury stock acquired (shares)		7,264,833		5,147,257		12,590,427	10,703,575
Value of treasury stock shares repurchased/withheld		$ 3,675		$ 3,392		$ 6,847	$ 6,866
Share buybacks | Liberty Broadband
Class of Stock [Line Items]
Treasury stock acquired (shares)		2,257,443		1,927,032		3,227,684	2,761,608
Value of treasury stock shares repurchased/withheld		$ 1,204		$ 1,244		$ 1,806	$ 1,762
Share buybacks | Liberty Broadband | Subsequent Event
Class of Stock [Line Items]
Treasury stock acquired (shares)	800,000
Value of treasury stock shares repurchased/withheld	$ 363
Income tax withholding
Class of Stock [Line Items]
Treasury stock acquired (shares)		24,630		183,357		289,475	467,920
Value of treasury stock shares repurchased/withheld		$ 12		$ 124		$ 173	$ 302
Exercise cost
Class of Stock [Line Items]
Treasury stock acquired (shares)		80,826		185,698		229,483	495,513