Segment Information (Tables)
   | 
12 Months Ended | 
Dec. 31, 2023  | 
| Segment Information | 
 
 | 
| Schedule of performance measures | 
 Performance Measures 
 | 
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 | 
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 | 
 | 
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 | 
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  | 
  | 
Years ended December 31,  | 
   | 
 
  | 
  | 
2023  | 
  | 
2022  | 
  | 
2021  | 
   | 
 
  | 
  | 
  | 
  | 
  | 
Adjusted  | 
  | 
  | 
  | 
Adjusted  | 
  | 
  | 
  | 
Adjusted  | 
   | 
 
  | 
  | 
Revenue  | 
  | 
OIBDA  | 
  | 
Revenue  | 
  | 
OIBDA  | 
  | 
Revenue  | 
  | 
OIBDA  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
   | 
 
GCI Holdings  | 
  | 
$  | 
 981  | 
  | 
 361  | 
  | 
 969  | 
  | 
 358  | 
  | 
 970  | 
  | 
 354  | 
  | 
 
Charter   | 
  | 
   | 
 54,607  | 
   | 
 21,947  | 
   | 
 54,022  | 
   | 
 21,335  | 
   | 
 51,682  | 
   | 
 20,301  | 
  | 
 
Corporate and other  | 
  | 
   | 
 —  | 
   | 
 (24)  | 
   | 
 6  | 
   | 
 (31)  | 
   | 
 18  | 
   | 
 (49)  | 
  | 
 
  | 
  | 
   | 
 55,588  | 
   | 
 22,284  | 
   | 
 54,997  | 
   | 
 21,662  | 
   | 
 52,670  | 
   | 
 20,606  | 
  | 
 
Eliminate equity method affiliate  | 
  | 
   | 
 (54,607)  | 
   | 
 (21,947)  | 
   | 
 (54,022)  | 
   | 
 (21,335)  | 
   | 
 (51,682)  | 
   | 
 (20,301)  | 
  | 
 
Consolidated Liberty Broadband  | 
  | 
$  | 
 981  | 
   | 
 337  | 
   | 
 975  | 
   | 
 327  | 
   | 
 988  | 
   | 
 305  | 
  | 
 
 
 
 | 
| Schedule of OIBDA By Segment | 
 Other Information 
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  | 
  | 
December 31, 2023  | 
  | 
December 31, 2022  | 
   | 
 
  | 
  | 
Total  | 
  | 
Investments  | 
  | 
Capital  | 
  | 
Total  | 
  | 
Investments  | 
  | 
Capital  | 
   | 
 
  | 
  | 
assets  | 
  | 
in affiliates  | 
  | 
expenditures  | 
  | 
assets  | 
  | 
in affiliates  | 
  | 
expenditures  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
   | 
 
GCI Holdings  | 
  | 
$  | 
 3,340  | 
  | 
 —  | 
  | 
 222  | 
  | 
 3,378  | 
  | 
 —  | 
  | 
 181  | 
  | 
 
Charter  | 
  | 
   | 
 147,193  | 
   | 
 —  | 
   | 
 11,115  | 
   | 
 144,523  | 
   | 
 —  | 
   | 
 9,376  | 
  | 
 
Corporate and other  | 
  | 
   | 
 12,301  | 
   | 
 12,116  | 
   | 
 —  | 
   | 
 11,764  | 
   | 
 11,433  | 
   | 
 —  | 
  | 
 
  | 
  | 
   | 
 162,834  | 
   | 
 12,116  | 
   | 
 11,337  | 
   | 
 159,665  | 
   | 
 11,433  | 
   | 
 9,557  | 
  | 
 
Eliminate equity method affiliate  | 
  | 
   | 
 (147,193)  | 
   | 
 —  | 
   | 
 (11,115)  | 
   | 
 (144,523)  | 
   | 
 —  | 
   | 
 (9,376)  | 
  | 
 
Consolidated Liberty Broadband  | 
  | 
$  | 
 15,641  | 
   | 
 12,116  | 
   | 
 222  | 
   | 
 15,142  | 
   | 
 11,433  | 
   | 
 181  | 
  | 
 
 
 | 
| Schedule of revenue by geographic area | 
  
 | 
 | 
 | 
 | 
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 | 
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 | 
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  | 
  | 
Years ended December 31,  | 
   | 
 
  | 
  | 
2023  | 
  | 
2022  | 
  | 
2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
   | 
 
United States  | 
      | 
$  | 
 981  | 
      | 
 975  | 
      | 
 986  | 
  | 
 
Other countries  | 
  | 
   | 
 —  | 
   | 
 —  | 
   | 
 2  | 
  | 
 
  | 
  | 
$  | 
 981  | 
   | 
 975  | 
   | 
 988  | 
  | 
 
 
 | 
| Schedule of reconciliation of segment Adjusted OIBDA to earnings (loss) before income taxes | 
  
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  | 
  | 
Years ended December 31,  | 
   | 
 
  | 
  | 
2023  | 
  | 
2022  | 
  | 
2021  | 
   | 
 
 |  
  | 
  | 
amounts in millions  | 
   | 
 
Consolidated segment Adjusted OIBDA  | 
      | 
$  | 
 337  | 
      | 
 327  | 
      | 
 305  | 
  | 
 
Stock-based compensation  | 
  | 
   | 
 (34)  | 
   | 
 (37)  | 
   | 
 (41)  | 
  | 
 
Depreciation and amortization  | 
  | 
   | 
 (230)  | 
   | 
 (262)  | 
   | 
 (267)  | 
  | 
 
Litigation settlement, net of recoveries  | 
  | 
  | 
 —  | 
  | 
 (67)  | 
  | 
 (95)  | 
  | 
 
Operating income (loss)   | 
  | 
  | 
 73  | 
  | 
 (39)  | 
  | 
 (98)  | 
  | 
 
Interest expense  | 
  | 
  | 
 (206)  | 
  | 
 (133)  | 
  | 
 (117)  | 
  | 
 
Share of earnings (loss) of affiliates, net  | 
  | 
   | 
 1,155  | 
   | 
 1,326  | 
   | 
 1,194  | 
  | 
 
Gain (loss) on dilution of investment in affiliate  | 
  | 
   | 
 (60)  | 
   | 
 (63)  | 
   | 
 (102)  | 
  | 
 
Realized and unrealized gains (losses) on financial instruments, net  | 
  | 
   | 
 (101)  | 
   | 
 334  | 
   | 
 67  | 
  | 
 
Gain (loss) on dispositions, net  | 
  | 
  | 
 —  | 
  | 
 179  | 
  | 
 12  | 
  | 
 
Other, net  | 
  | 
   | 
 27  | 
   | 
 (70)  | 
   | 
 (6)  | 
  | 
 
Earnings (loss) before income taxes  | 
  | 
$  | 
 888  | 
   | 
 1,534  | 
   | 
 950  | 
  | 
 
 
 
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