| Schedule of allocation of excess basis within memo accounts used for equity accounting purposes | 
 The excess basis in our investment in Charter of $9,115 million as of September 30, 2021 is allocated within memo accounts used for equity method accounting purposes as follows (amounts in millions):  
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
  | 
  | 
September 30,   | 
  | 
December 31,   | 
 
  | 
  | 
  | 
2021  | 
  | 
2020  | 
 
Property and equipment  | 
      | 
$  | 
 709  | 
  | 
 733  | 
 
Customer relationships  | 
  | 
   | 
 2,638  | 
  | 
 2,726  | 
 
Franchise fees  | 
  | 
   | 
 3,867  | 
  | 
 3,693  | 
 
Trademarks  | 
  | 
   | 
 29  | 
  | 
 29  | 
 
Goodwill  | 
  | 
   | 
 4,113  | 
  | 
 3,934  | 
 
Debt  | 
  | 
   | 
 (578)  | 
  | 
 (602)  | 
 
Deferred income tax liability  | 
  | 
   | 
 (1,663)  | 
  | 
 (1,641)  | 
 
  | 
  | 
$  | 
 9,115  | 
  | 
 8,872  | 
 
 
 | 
| Summary of financial information for Charter | 
 Summarized unaudited financial information for Charter is as follows (amounts in millions): 
Charter condensed consolidated balance sheets 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
      | 
September 30, 2021  | 
  | 
December 31, 2020  | 
   | 
 
Current assets  | 
  | 
$  | 
 3,498  | 
  | 
 3,909  | 
  | 
 
Property and equipment, net  | 
  | 
   | 
 34,179  | 
  | 
 34,357  | 
  | 
 
Goodwill  | 
  | 
   | 
 29,554  | 
  | 
 29,554  | 
  | 
 
Intangible assets, net  | 
  | 
   | 
 71,741  | 
  | 
 72,937  | 
  | 
 
Other assets  | 
  | 
   | 
 3,523  | 
  | 
 3,449  | 
  | 
 
Total assets  | 
  | 
$  | 
 142,495  | 
  | 
 144,206  | 
  | 
 
Current liabilities  | 
  | 
$  | 
 12,237  | 
  | 
 9,875  | 
  | 
 
Deferred income taxes  | 
  | 
   | 
 18,980  | 
  | 
 18,108  | 
  | 
 
Long-term debt  | 
  | 
   | 
 85,376  | 
  | 
 81,744  | 
  | 
 
Other liabilities  | 
  | 
   | 
 4,376  | 
  | 
 4,198  | 
  | 
 
Equity  | 
  | 
   | 
 21,526  | 
  | 
 30,281  | 
  | 
 
Total liabilities and shareholders’ equity  | 
  | 
$  | 
 142,495  | 
  | 
 144,206  | 
  | 
 
 
Charter condensed consolidated statements of operations 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 
Three months ended    | 
      | 
Nine months ended   | 
 
  | 
September 30,   | 
  | 
September 30,   | 
 
  | 
2021  | 
  | 
2020  | 
  | 
2021  | 
  | 
2020  | 
 
Revenue  | 
$  | 
 13,146  | 
  | 
 12,039  | 
  | 
 38,470  | 
  | 
 35,473  | 
 
Cost and expenses:  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
Operating costs and expenses (excluding depreciation and amortization)  | 
   | 
 7,958  | 
  | 
 7,483  | 
  | 
 23,551  | 
  | 
 22,212  | 
 
Depreciation and amortization  | 
   | 
 2,270  | 
  | 
 2,370  | 
  | 
 7,065  | 
  | 
 7,295  | 
 
Other operating expenses, net  | 
   | 
 (9)  | 
  | 
 14  | 
  | 
 284  | 
  | 
 23  | 
 
  | 
  | 
 10,219  | 
  | 
 9,867  | 
  | 
 30,900  | 
  | 
 29,530  | 
 
Operating income  | 
  | 
 2,927  | 
  | 
 2,172  | 
  | 
 7,570  | 
  | 
 5,943  | 
 
Interest expense, net  | 
   | 
 (1,016)  | 
  | 
 (946)  | 
  | 
 (3,003)  | 
  | 
 (2,883)  | 
 
Other income (expense), net  | 
  | 
 (157)  | 
  | 
 (117)  | 
  | 
 (237)  | 
  | 
 (413)  | 
 
Income tax (expense) benefit  | 
   | 
 (347)  | 
  | 
 (177)  | 
  | 
 (844)  | 
  | 
 (372)  | 
 
Net income (loss)  | 
  | 
 1,407  | 
  | 
 932  | 
  | 
 3,486  | 
  | 
 2,275  | 
 
Less: Net income attributable to noncontrolling interests  | 
  | 
 (190)  | 
  | 
 (118)  | 
  | 
 (442)  | 
  | 
 (299)  | 
 
Net income (loss) attributable to Charter shareholders   | 
$  | 
 1,217  | 
  | 
 814  | 
  | 
 3,044  | 
  | 
 1,976  | 
 
 
 |