Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	18,000,000	21,000,000
Net income attributable to Charter shareholders	$ 1,021	$ 1,203
Weighted average common shares outstanding, basic (shares)	151,438,371	170,688,127
Assumed exercise or issuance of shares relating to stock plans	2,099,988	3,812,345
Weighted average common shares outstanding, diluted (shares)	153,538,359	174,500,472
Basic earnings per common share attributable to Charter shareholders (dollars per share)	$ 6.74	$ 7.05
Diluted earnings per common share attributable to Charter shareholders (dollars per share)	$ 6.65	$ 6.90