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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Earnings Per Share [Abstract]        
Antidilutive securities excluded from computation of earnings per share (in shares) 17,000,000 18,000,000 17,000,000 18,000,000
Net income attributable to Charter shareholders $ 1,280 $ 1,255 $ 3,617 $ 3,499
Weighted average common shares outstanding, basic (shares) 142,308,740 149,004,322 143,379,041 150,169,275
Assumed exercise or issuance of shares relating to stock plans 2,750,730 3,014,837 2,110,329 2,325,998
Weighted average common shares outstanding, diluted (shares) 145,059,470 152,019,159 145,489,370 152,495,273
Basic earnings per common share attributable to Charter shareholders (dollars per share) $ 8.99 $ 8.42 $ 25.23 $ 23.30
Diluted earnings per common share attributable to Charter shareholders (dollars per share) $ 8.82 $ 8.25 $ 24.86 $ 22.94