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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Earnings Per Share [Abstract]        
Antidilutive securities excluded from computation of earnings per share (in shares) 19,000,000 23,000,000 20,000,000 18,000,000
Net income attributable to Charter shareholders $ 1,185 $ 1,217 $ 3,859 $ 3,044
Charter Holdings convertible preferred units 0 0 0 70
Net income attributable to Charter shareholders after assumed conversions $ 1,185 $ 1,217 $ 3,859 $ 3,114
Weighted average common shares outstanding, basic (shares) 157,971,109 181,925,180 164,189,703 186,380,681
Assumed exercise or issuance of shares relating to stock plans 2,667,077 5,240,891 3,162,074 5,158,105
Weighted average Charter Holdings convertible preferred units 0 0 0 5,777,881
Weighted average common shares outstanding, diluted (shares) 160,638,186 187,166,071 167,351,777 197,316,667
Basic earnings per common share attributable to Charter shareholders (dollars per share) $ 7.51 $ 6.69 $ 23.51 $ 16.33
Diluted earnings per common share attributable to Charter shareholders (dollars per share) $ 7.38 $ 6.50 $ 23.06 $ 15.78