| Schedule of allocation of excess basis within memo accounts used for equity accounting purposes | 
 The excess basis in our investment in Charter is allocated within memo accounts used for equity method accounting purposes as follows (amounts in millions):  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
  | 
  | 
June 30,   | 
  | 
December 31,   | 
  | 
 
  | 
  | 
  | 
2023  | 
  | 
2022  | 
  | 
 
Property and equipment  | 
      | 
$  | 
 468  | 
  | 
 524  | 
  | 
 
Customer relationships  | 
  | 
   | 
 2,135  | 
  | 
 2,230  | 
  | 
 
Franchise fees  | 
  | 
   | 
 3,843  | 
  | 
 3,809  | 
  | 
 
Trademarks  | 
  | 
   | 
 29  | 
  | 
 29  | 
  | 
 
Goodwill  | 
  | 
   | 
 4,024  | 
  | 
 3,975  | 
  | 
 
Debt  | 
  | 
   | 
 (382)  | 
  | 
 (450)  | 
  | 
 
Deferred income tax liability  | 
  | 
   | 
 (1,493)  | 
  | 
 (1,505)  | 
  | 
 
  | 
  | 
$  | 
 8,624  | 
  | 
 8,612  | 
  | 
 
 
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| Summary of financial information for Charter | 
 Charter condensed consolidated balance sheets 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
      | 
June 30, 2023  | 
  | 
December 31, 2022  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Current assets  | 
  | 
$  | 
 3,929  | 
  | 
 4,017  | 
  | 
 
Property and equipment, net  | 
  | 
   | 
 37,546  | 
  | 
 36,039  | 
  | 
 
Goodwill  | 
  | 
   | 
 29,672  | 
  | 
 29,563  | 
  | 
 
Intangible assets, net  | 
  | 
   | 
 69,618  | 
  | 
 70,135  | 
  | 
 
Other assets  | 
  | 
   | 
 4,850  | 
  | 
 4,769  | 
  | 
 
Total assets  | 
  | 
$  | 
 145,615  | 
  | 
 144,523  | 
  | 
 
Current liabilities  | 
  | 
$  | 
 11,975  | 
  | 
 12,065  | 
  | 
 
Deferred income taxes  | 
  | 
   | 
 18,982  | 
  | 
 19,058  | 
  | 
 
Long-term debt  | 
  | 
   | 
 95,971  | 
  | 
 96,093  | 
  | 
 
Other liabilities  | 
  | 
   | 
 4,660  | 
  | 
 4,758  | 
  | 
 
Equity  | 
  | 
   | 
 14,027  | 
  | 
 12,549  | 
  | 
 
Total liabilities and shareholders’ equity  | 
  | 
$  | 
 145,615  | 
  | 
 144,523  | 
  | 
 
 
Charter condensed consolidated statements of operations 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
  | 
Three months ended   | 
    | 
Six months ended   | 
   | 
 
  | 
  | 
June 30,   | 
  | 
June 30,   | 
  | 
 
  | 
  | 
2023  | 
  | 
2022  | 
  | 
2023  | 
  | 
2022  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Revenue  | 
  | 
$  | 
 13,659  | 
  | 
 13,598  | 
  | 
 27,312  | 
  | 
 26,798  | 
  | 
 
Cost and expenses:  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
Operating costs and expenses (excluding depreciation and amortization)  | 
  | 
   | 
 8,305  | 
  | 
 8,193  | 
  | 
 16,816  | 
  | 
 16,327  | 
  | 
 
Depreciation and amortization  | 
  | 
   | 
 2,172  | 
  | 
 2,240  | 
  | 
 4,378  | 
  | 
 4,534  | 
  | 
 
Other operating (income) expenses, net  | 
  | 
   | 
 (58)  | 
  | 
 (62)  | 
  | 
 (48)  | 
  | 
 (61)  | 
  | 
 
  | 
  | 
  | 
 10,419  | 
  | 
 10,371  | 
  | 
 21,146  | 
  | 
 20,800  | 
  | 
 
Operating income  | 
  | 
  | 
 3,240  | 
  | 
 3,227  | 
  | 
 6,166  | 
  | 
 5,998  | 
  | 
 
Interest expense, net  | 
  | 
   | 
 (1,298)  | 
  | 
 (1,109)  | 
  | 
 (2,563)  | 
  | 
 (2,169)  | 
  | 
 
Other income (expense), net  | 
  | 
  | 
 (85)  | 
  | 
 79  | 
  | 
 (189)  | 
  | 
 102  | 
  | 
 
Income tax (expense) benefit  | 
  | 
   | 
 (444)  | 
  | 
 (489)  | 
  | 
 (818)  | 
  | 
 (834)  | 
  | 
 
Net income (loss)  | 
  | 
  | 
 1,413  | 
  | 
 1,708  | 
  | 
 2,596  | 
  | 
 3,097  | 
  | 
 
Less: Net income attributable to noncontrolling interests  | 
  | 
  | 
 (190)  | 
  | 
 (237)  | 
  | 
 (352)  | 
  | 
 (423)  | 
  | 
 
Net income (loss) attributable to Charter shareholders   | 
  | 
$  | 
 1,223  | 
  | 
 1,471  | 
  | 
 2,244  | 
  | 
 2,674  | 
  | 
 
 
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