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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Earnings Per Share [Abstract]        
Antidilutive securities excluded from computation of earnings per share (in shares) 18,000,000 20,000,000 18,000,000 20,000,000
Net income attributable to Charter shareholders $ 1,223 $ 1,471 $ 2,244 $ 2,674
Weighted average common shares outstanding, basic (shares) 150,091,880 164,049,619 150,761,406 167,350,535
Assumed exercise or issuance of shares relating to stock plans 1,883,818 3,041,306 1,966,134 3,390,927
Weighted average common shares outstanding, diluted (shares) 151,975,698 167,090,925 152,727,540 170,741,462
Basic earnings per common share attributable to Charter shareholders (dollars per share) $ 8.15 $ 8.96 $ 14.89 $ 15.98
Diluted earnings per common share attributable to Charter shareholders (dollars per share) $ 8.05 $ 8.80 $ 14.69 $ 15.66