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Related Party Transactions (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Related Party Transactions:      
A/N’s share of the tax benefit realized by Charter pursuant to the Tax Receivable Agreement (percentage) 50.00%    
Gregory Maffei's voting interest in Liberty Broadband 12.60%    
Dr. John Malone's voting interest in Liberty Broadband (percentage) 45.80%    
Gregory Maffei's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc. 6.30%    
Dr. John Malone's voting interest in Qurate Retail, Inc. (percentage) 41.20%    
Cash payments received from HSN, Inc. and QVC, Inc. $ 48 $ 50 $ 50
Dr. John Malone's voting interest in Discovery Communications, Inc. for election of directors (percentage) 26.50%    
Advance Newhouse Programming Partnership's ownership percentage in Series A preferred stock of Discovery Communications, Inc. (percentage) 100.00%    
Advance Newhouse Programming Partnership's ownership percentage in Series C preferred stock of Discovery Communications, Inc. (percentage) 100.00%    
Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors 23.20%    
Maximum      
Related Party Transactions:      
Percent of total operating costs and expenses paid to Discovery Communications, Inc. and Starz (percentage) 2.00% 2.00% 2.00%
Equity Method Investee [Member]      
Related Party Transactions:      
Payments to related parties $ 229 $ 225 $ 314
Class A Common Stock      
Related Party Transactions:      
Dr. John Malone's ownership percentage in Discovery Communications, Inc. (percentage) 1.00%    
Class B Common Stock      
Related Party Transactions:      
Dr. John Malone's ownership percentage in Discovery Communications, Inc. (percentage) 95.00%    
Class C Common Stock      
Related Party Transactions:      
Dr. John Malone's ownership percentage in Discovery Communications, Inc. (percentage) 3.70%