| Schedule of allocation of excess basis within memo accounts used for equity accounting purposes | 
 The excess basis in our investment in Charter of $8,967 million as of June 30, 2022 is allocated within memo accounts used for equity method accounting purposes as follows (amounts in millions):  
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  | 
  | 
  | 
June 30,   | 
  | 
December 31,   | 
  | 
 
  | 
  | 
  | 
2022  | 
  | 
2021  | 
  | 
 
Property and equipment  | 
      | 
$  | 
 627  | 
  | 
 661  | 
  | 
 
Customer relationships  | 
  | 
   | 
 2,437  | 
  | 
 2,537  | 
  | 
 
Franchise fees  | 
  | 
   | 
 3,897  | 
  | 
 3,828  | 
  | 
 
Trademarks  | 
  | 
   | 
 29  | 
  | 
 29  | 
  | 
 
Goodwill  | 
  | 
   | 
 4,105  | 
  | 
 4,024  | 
  | 
 
Debt  | 
  | 
   | 
 (512)  | 
  | 
 (535)  | 
  | 
 
Deferred income tax liability  | 
  | 
   | 
 (1,616)  | 
  | 
 (1,626)  | 
  | 
 
  | 
  | 
$  | 
 8,967  | 
  | 
 8,918  | 
  | 
 
 
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| Summary of financial information for Charter | 
 Charter condensed consolidated balance sheets 
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  | 
      | 
June 30, 2022  | 
  | 
December 31, 2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Current assets  | 
  | 
$  | 
 3,738  | 
  | 
 3,566  | 
  | 
 
Property and equipment, net  | 
  | 
   | 
 34,472  | 
  | 
 34,310  | 
  | 
 
Goodwill  | 
  | 
   | 
 29,563  | 
  | 
 29,562  | 
  | 
 
Intangible assets, net  | 
  | 
   | 
 70,727  | 
  | 
 71,406  | 
  | 
 
Other assets  | 
  | 
   | 
 4,758  | 
  | 
 3,647  | 
  | 
 
Total assets  | 
  | 
$  | 
 143,258  | 
  | 
 142,491  | 
  | 
 
Current liabilities  | 
  | 
$  | 
 11,395  | 
  | 
 12,458  | 
  | 
 
Deferred income taxes  | 
  | 
   | 
 19,123  | 
  | 
 19,096  | 
  | 
 
Long-term debt  | 
  | 
   | 
 94,468  | 
  | 
 88,564  | 
  | 
 
Other liabilities  | 
  | 
   | 
 4,759  | 
  | 
 4,217  | 
  | 
 
Equity  | 
  | 
   | 
 13,513  | 
  | 
 18,156  | 
  | 
 
Total liabilities and shareholders’ equity  | 
  | 
$  | 
 143,258  | 
  | 
 142,491  | 
  | 
 
 
Charter condensed consolidated statements of operations 
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 | 
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  | 
  | 
Three months ended    | 
      | 
Six months ended   | 
   | 
 
  | 
  | 
June 30,   | 
  | 
June 30,   | 
  | 
 
  | 
  | 
2022  | 
  | 
2021  | 
  | 
2022  | 
  | 
2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Revenue  | 
  | 
$  | 
 13,598  | 
  | 
 12,802  | 
  | 
 26,798  | 
  | 
 25,324  | 
  | 
 
Cost and expenses:  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
Operating costs and expenses (excluding depreciation and amortization)  | 
  | 
   | 
 8,193  | 
  | 
 7,882  | 
  | 
 16,327  | 
  | 
 15,593  | 
  | 
 
Depreciation and amortization  | 
  | 
   | 
 2,240  | 
  | 
 2,354  | 
  | 
 4,534  | 
  | 
 4,795  | 
  | 
 
Other operating expenses, net  | 
  | 
   | 
 (62)  | 
  | 
 (9)  | 
  | 
 (61)  | 
  | 
 293  | 
  | 
 
  | 
  | 
  | 
 10,371  | 
  | 
 10,227  | 
  | 
 20,800  | 
  | 
 20,681  | 
  | 
 
Operating income  | 
  | 
  | 
 3,227  | 
  | 
 2,575  | 
  | 
 5,998  | 
  | 
 4,643  | 
  | 
 
Interest expense, net  | 
  | 
   | 
 (1,109)  | 
  | 
 (1,004)  | 
  | 
 (2,169)  | 
  | 
 (1,987)  | 
  | 
 
Other income (expense), net  | 
  | 
  | 
 79  | 
  | 
 (132)  | 
  | 
 102  | 
  | 
 (80)  | 
  | 
 
Income tax (expense) benefit  | 
  | 
   | 
 (489)  | 
  | 
 (281)  | 
  | 
 (834)  | 
  | 
 (497)  | 
  | 
 
Net income (loss)  | 
  | 
  | 
 1,708  | 
  | 
 1,158  | 
  | 
 3,097  | 
  | 
 2,079  | 
  | 
 
Less: Net income attributable to noncontrolling interests  | 
  | 
  | 
 (237)  | 
  | 
 (138)  | 
  | 
 (423)  | 
  | 
 (252)  | 
  | 
 
Net income (loss) attributable to Charter shareholders   | 
  | 
$  | 
 1,471  | 
  | 
 1,020  | 
  | 
 2,674  | 
  | 
 1,827  | 
  | 
 
 
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