Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	20,000,000	15,000,000	20,000,000	15,000,000
Net income attributable to Charter shareholders	$ 1,471	$ 1,020	$ 2,674	$ 1,827
Charter Holdings convertible preferred units	0	32	0	70
Net income attributable to Charter shareholders after assumed conversions	$ 1,471	$ 1,052	$ 2,674	$ 1,897
Weighted average common shares outstanding, basic (shares)	164,049,619	185,916,505	167,350,535	188,645,356
Assumed exercise or issuance of shares relating to stock plans	3,041,306	5,058,176	3,390,927	5,098,205
Weighted average Charter Holdings convertible preferred units	0	8,102,709	0	8,714,704
Weighted average common shares outstanding, diluted (shares)	167,090,925	199,077,390	170,741,462	202,458,265
Basic earnings per common share attributable to Charter shareholders (dollars per share)	$ 8.96	$ 5.48	$ 15.98	$ 9.69
Diluted earnings per common share attributable to Charter shareholders (dollars per share)	$ 8.80	$ 5.29	$ 15.66	$ 9.37