| 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):  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
  | 
  | 
September 30,   | 
  | 
December 31,   | 
  | 
 
  | 
  | 
  | 
2022  | 
  | 
2021  | 
  | 
 
Property and equipment  | 
      | 
$  | 
 573  | 
  | 
 661  | 
  | 
 
Customer relationships  | 
  | 
   | 
 2,330  | 
  | 
 2,537  | 
  | 
 
Franchise fees  | 
  | 
   | 
 3,847  | 
  | 
 3,828  | 
  | 
 
Trademarks  | 
  | 
   | 
 29  | 
  | 
 29  | 
  | 
 
Goodwill  | 
  | 
   | 
 4,047  | 
  | 
 4,024  | 
  | 
 
Debt  | 
  | 
   | 
 (472)  | 
  | 
 (535)  | 
  | 
 
Deferred income tax liability  | 
  | 
   | 
 (1,573)  | 
  | 
 (1,626)  | 
  | 
 
  | 
  | 
$  | 
 8,781  | 
  | 
 8,918  | 
  | 
 
 
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| Summary of financial information for Charter | 
 Charter condensed consolidated balance sheets 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
      | 
September 30, 2022  | 
  | 
December 31, 2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Current assets  | 
  | 
$  | 
 3,754  | 
  | 
 3,566  | 
  | 
 
Property and equipment, net  | 
  | 
   | 
 35,005  | 
  | 
 34,310  | 
  | 
 
Goodwill  | 
  | 
   | 
 29,563  | 
  | 
 29,562  | 
  | 
 
Intangible assets, net  | 
  | 
   | 
 70,436  | 
  | 
 71,406  | 
  | 
 
Other assets  | 
  | 
   | 
 4,911  | 
  | 
 3,647  | 
  | 
 
Total assets  | 
  | 
$  | 
 143,669  | 
  | 
 142,491  | 
  | 
 
Current liabilities  | 
  | 
$  | 
 11,595  | 
  | 
 12,458  | 
  | 
 
Deferred income taxes  | 
  | 
   | 
 19,153  | 
  | 
 19,096  | 
  | 
 
Long-term debt  | 
  | 
   | 
 95,510  | 
  | 
 88,564  | 
  | 
 
Other liabilities  | 
  | 
   | 
 5,061  | 
  | 
 4,217  | 
  | 
 
Equity  | 
  | 
   | 
 12,350  | 
  | 
 18,156  | 
  | 
 
Total liabilities and shareholders’ equity  | 
  | 
$  | 
 143,669  | 
  | 
 142,491  | 
  | 
 
 
Charter condensed consolidated statements of operations 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
  | 
Three months ended    | 
      | 
Nine months ended   | 
   | 
 
  | 
  | 
September 30,   | 
  | 
September 30,   | 
  | 
 
  | 
  | 
2022  | 
  | 
2021  | 
  | 
2022  | 
  | 
2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Revenue  | 
  | 
$  | 
 13,550  | 
  | 
 13,146  | 
  | 
 40,348  | 
  | 
 38,470  | 
  | 
 
Cost and expenses:  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
Operating costs and expenses (excluding depreciation and amortization)  | 
  | 
   | 
 8,247  | 
  | 
 7,958  | 
  | 
 24,574  | 
  | 
 23,551  | 
  | 
 
Depreciation and amortization  | 
  | 
   | 
 2,177  | 
  | 
 2,270  | 
  | 
 6,711  | 
  | 
 7,065  | 
  | 
 
Other operating expenses, net  | 
  | 
   | 
 202  | 
  | 
 (9)  | 
  | 
 141  | 
  | 
 284  | 
  | 
 
  | 
  | 
  | 
 10,626  | 
  | 
 10,219  | 
  | 
 31,426  | 
  | 
 30,900  | 
  | 
 
Operating income  | 
  | 
  | 
 2,924  | 
  | 
 2,927  | 
  | 
 8,922  | 
  | 
 7,570  | 
  | 
 
Interest expense, net  | 
  | 
   | 
 (1,160)  | 
  | 
 (1,016)  | 
  | 
 (3,329)  | 
  | 
 (3,003)  | 
  | 
 
Other income (expense), net  | 
  | 
  | 
 (37)  | 
  | 
 (157)  | 
  | 
 65  | 
  | 
 (237)  | 
  | 
 
Income tax (expense) benefit  | 
  | 
   | 
 (360)  | 
  | 
 (347)  | 
  | 
 (1,194)  | 
  | 
 (844)  | 
  | 
 
Net income (loss)  | 
  | 
  | 
 1,367  | 
  | 
 1,407  | 
  | 
 4,464  | 
  | 
 3,486  | 
  | 
 
Less: Net income attributable to noncontrolling interests  | 
  | 
  | 
 (182)  | 
  | 
 (190)  | 
  | 
 (605)  | 
  | 
 (442)  | 
  | 
 
Net income (loss) attributable to Charter shareholders   | 
  | 
$  | 
 1,185  | 
  | 
 1,217  | 
  | 
 3,859  | 
  | 
 3,044  | 
  | 
 
 
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