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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Earnings Per Share [Abstract]      
Antidilutive securities excluded from computation of earnings per share (in shares) 19,000,000 26,000,000 29,000,000
Net income attributable to Charter shareholders $ 4,654 $ 3,222 $ 1,668
Charter Holdings convertible preferred units 70 0 0
Net income attributable to Charter shareholders after assumed conversions $ 4,724 $ 3,222 $ 1,668
Weighted average common shares outstanding, basic 183,669,369 203,316,483 219,506,735
Assumed exercise or issuance of shares relating to stock plans 5,052,041 5,956,764 4,279,645
Weighted average Charter Holdings convertible preferred units 4,321,538 0 0
Weighted average common shares outstanding, diluted 193,042,948 209,273,247 223,786,380
Basic earnings per common share attributable to Charter shareholders $ 25.34 $ 15.85 $ 7.60
Diluted earnings per common share attributable to Charter shareholders $ 24.47 $ 15.40 $ 7.45