| Schedule of allocation of excess basis within memo accounts used for equity accounting purposes | 
 The excess basis in our investment in Charter of $9,136 million as of March 31, 2022 is allocated within memo accounts used for equity method accounting purposes as follows (amounts in millions):  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
  | 
  | 
March 31,   | 
  | 
December 31,   | 
  | 
 
  | 
  | 
  | 
2022  | 
  | 
2021  | 
  | 
 
Property and equipment  | 
      | 
$  | 
 676  | 
  | 
 661  | 
  | 
 
Customer relationships  | 
  | 
   | 
 2,537  | 
  | 
 2,537  | 
  | 
 
Franchise fees  | 
  | 
   | 
 3,935  | 
  | 
 3,828  | 
  | 
 
Trademarks  | 
  | 
   | 
 29  | 
  | 
 29  | 
  | 
 
Goodwill  | 
  | 
   | 
 4,150  | 
  | 
 4,024  | 
  | 
 
Debt  | 
  | 
   | 
 (534)  | 
  | 
 (535)  | 
  | 
 
Deferred income tax liability  | 
  | 
   | 
 (1,657)  | 
  | 
 (1,626)  | 
  | 
 
  | 
  | 
$  | 
 9,136  | 
  | 
 8,918  | 
  | 
 
 
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| Summary of financial information for Charter | 
 Charter condensed consolidated balance sheets 
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 | 
 | 
 | 
 | 
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  | 
      | 
March 31, 2022  | 
  | 
December 31, 2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
  | 
 
Current assets  | 
  | 
$  | 
 5,516  | 
  | 
 3,566  | 
  | 
 
Property and equipment, net  | 
  | 
   | 
 34,173  | 
  | 
 34,310  | 
  | 
 
Goodwill  | 
  | 
   | 
 29,563  | 
  | 
 29,562  | 
  | 
 
Intangible assets, net  | 
  | 
   | 
 71,046  | 
  | 
 71,406  | 
  | 
 
Other assets  | 
  | 
   | 
 3,650  | 
  | 
 3,647  | 
  | 
 
Total assets  | 
  | 
$  | 
 143,948  | 
  | 
 142,491  | 
  | 
 
Current liabilities  | 
  | 
$  | 
 13,929  | 
  | 
 12,458  | 
  | 
 
Deferred income taxes  | 
  | 
   | 
 19,070  | 
  | 
 19,096  | 
  | 
 
Long-term debt  | 
  | 
   | 
 90,679  | 
  | 
 88,564  | 
  | 
 
Other liabilities  | 
  | 
   | 
 4,326  | 
  | 
 4,217  | 
  | 
 
Equity  | 
  | 
   | 
 15,944  | 
  | 
 18,156  | 
  | 
 
Total liabilities and shareholders’ equity  | 
  | 
$  | 
 143,948  | 
  | 
 142,491  | 
  | 
 
 
Charter condensed consolidated statements of operations 
  | 
  | 
  | 
  | 
  | 
 
  | 
Three months ended   | 
 
  | 
March 31,   | 
 
  | 
2022  | 
  | 
2021  | 
 
 |  
  | 
amounts in millions  | 
 
Revenue  | 
$  | 
 13,200  | 
  | 
 12,522  | 
 
Cost and expenses:  | 
  | 
  | 
  | 
  | 
 
Operating costs and expenses (excluding depreciation and amortization)  | 
   | 
 8,134  | 
  | 
 7,711  | 
 
Depreciation and amortization  | 
   | 
 2,294  | 
  | 
 2,441  | 
 
Other operating expenses, net  | 
   | 
 1  | 
  | 
 302  | 
 
  | 
  | 
 10,429  | 
  | 
 10,454  | 
 
Operating income  | 
  | 
 2,771  | 
  | 
 2,068  | 
 
Interest expense, net  | 
   | 
 (1,060)  | 
  | 
 (983)  | 
 
Other income (expense), net  | 
  | 
 23  | 
  | 
 52  | 
 
Income tax (expense) benefit  | 
   | 
 (345)  | 
  | 
 (216)  | 
 
Net income (loss)  | 
  | 
 1,389  | 
  | 
 921  | 
 
Less: Net income attributable to noncontrolling interests  | 
  | 
 (186)  | 
  | 
 (114)  | 
 
Net income (loss) attributable to Charter shareholders   | 
$  | 
 1,203  | 
  | 
 807  | 
 
 
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