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Common Stock (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2022	Mar. 31, 2022	Mar. 31, 2021
Class of Stock [Line Items]
Treasury stock acquired (shares)		5,739,096	6,150,696
Value of treasury stock shares repurchased/withheld		$ 3,333	$ 3,652
Remaining authorized repurchase amount		$ 1,200
Share buybacks
Class of Stock [Line Items]
Treasury stock acquired (shares)		5,325,594	5,556,318
Value of treasury stock shares repurchased/withheld		$ 3,172	$ 3,474
Share buybacks | Liberty Broadband
Class of Stock [Line Items]
Treasury stock acquired (shares)		970,241	834,576
Value of treasury stock shares repurchased/withheld		$ 602	$ 518
Share buybacks | Liberty Broadband | Subsequent Event
Class of Stock [Line Items]
Treasury stock acquired (shares)	900,000
Value of treasury stock shares repurchased/withheld	$ 491
Income tax withholding
Class of Stock [Line Items]
Treasury stock acquired (shares)		264,845	284,563
Value of treasury stock shares repurchased/withheld		$ 161	$ 178
Exercise cost
Class of Stock [Line Items]
Treasury stock acquired (shares)		148,657	309,815

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