| Schedule of performance measures | 
  
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  | 
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Three months ended  September 30,   | 
   | 
 
  | 
  | 
2019  | 
  | 
2018  | 
   | 
 
  | 
  | 
  | 
  | 
  | 
Adjusted  | 
  | 
  | 
  | 
Adjusted  | 
   | 
 
  | 
  | 
Revenue  | 
  | 
OIBDA  | 
  | 
Revenue  | 
  | 
OIBDA  | 
   | 
 
  | 
  | 
  | 
(amounts in thousands)  | 
   | 
 
Skyhook   | 
      | 
$  | 
 3,713  | 
      | 
 (1,105)  | 
      | 
 3,518  | 
      | 
 (683)  | 
  | 
 
Charter  | 
  | 
   | 
 11,450,000  | 
  | 
 4,072,000  | 
  | 
 10,892,000  | 
  | 
 3,933,000  | 
  | 
 
Corporate and other  | 
  | 
   | 
 —  | 
  | 
 (3,481)  | 
  | 
 —  | 
  | 
 (1,515)  | 
  | 
 
  | 
  | 
   | 
 11,453,713  | 
  | 
 4,067,414  | 
  | 
 10,895,518  | 
  | 
 3,930,802  | 
  | 
 
Eliminate equity method affiliate  | 
  | 
   | 
 (11,450,000)  | 
  | 
 (4,072,000)  | 
  | 
 (10,892,000)  | 
  | 
 (3,933,000)  | 
  | 
 
Consolidated Liberty Broadband  | 
  | 
$  | 
 3,713  | 
  | 
 (4,586)  | 
  | 
 3,518  | 
  | 
 (2,198)  | 
  | 
 
 
 
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  | 
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Nine months ended September 30,   | 
   | 
 
  | 
  | 
2019  | 
  | 
2018  | 
   | 
 
  | 
  | 
  | 
  | 
Adjusted  | 
  | 
  | 
  | 
Adjusted  | 
   | 
 
  | 
  | 
Revenue  | 
  | 
OIBDA  | 
  | 
Revenue  | 
  | 
OIBDA  | 
   | 
 
  | 
  | 
(amounts in thousands)  | 
   | 
 
Skyhook   | 
      | 
$  | 
 10,918  | 
      | 
 (3,174)  | 
      | 
 18,680  | 
      | 
 4,393  | 
  | 
 
Charter  | 
  | 
   | 
 34,003,000  | 
   | 
 12,255,000  | 
   | 
 32,403,000  | 
   | 
 11,779,000  | 
  | 
 
Corporate and other  | 
  | 
   | 
 —  | 
   | 
 (8,703)  | 
   | 
 —  | 
   | 
 (4,807)  | 
  | 
 
  | 
  | 
   | 
 34,013,918  | 
   | 
 12,243,123  | 
   | 
 32,421,680  | 
   | 
 11,778,586  | 
  | 
 
Eliminate equity method affiliate  | 
  | 
   | 
 (34,003,000)  | 
   | 
 (12,255,000)  | 
   | 
 (32,403,000)  | 
   | 
 (11,779,000)  | 
  | 
 
Consolidated Liberty Broadband  | 
  | 
$  | 
 10,918  | 
   | 
 (11,877)  | 
   | 
 18,680  | 
   | 
 (414)  | 
  | 
 
 
 
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| Schedule of segment reporting information | 
  
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  | 
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September 30, 2019  | 
   | 
 
  | 
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Total  | 
  | 
Investments  | 
  | 
Capital  | 
   | 
 
  | 
  | 
assets  | 
  | 
in affiliates  | 
  | 
expenditures  | 
   | 
 
  | 
  | 
(amounts in thousands)  | 
   | 
 
Skyhook  | 
      | 
$  | 
 20,462  | 
      | 
—  | 
      | 
 75  | 
  | 
 
Charter  | 
  | 
   | 
 145,267,000  | 
   | 
—  | 
   | 
 4,913,000  | 
  | 
 
Corporate and other  | 
  | 
   | 
 12,151,585  | 
   | 
 12,067,329  | 
   | 
—  | 
  | 
 
  | 
  | 
   | 
 157,439,047  | 
   | 
 12,067,329  | 
   | 
 4,913,075  | 
  | 
 
Eliminate equity method affiliate  | 
  | 
   | 
 (145,267,000)  | 
   | 
 —  | 
   | 
 (4,913,000)  | 
  | 
 
Consolidated Liberty Broadband  | 
  | 
$  | 
 12,172,047  | 
   | 
 12,067,329  | 
   | 
 75  | 
  | 
 
 
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| Schedule of reconciliation of segment Adjusted OIBDA to earnings (loss) before income taxes | 
  
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  | 
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Three months ended  | 
  | 
Nine months  | 
   | 
 
  | 
  | 
September 30,   | 
  | 
ended September 30,   | 
   | 
 
  | 
  | 
2019  | 
  | 
2018  | 
  | 
2019  | 
      | 
2018  | 
   | 
 
  | 
  | 
  | 
(amounts in thousands)  | 
   | 
 
Adjusted OIBDA  | 
      | 
$  | 
 (4,586)  | 
      | 
 (2,198)  | 
      | 
 (11,877)  | 
      | 
 (414)  | 
  | 
 
Stock-based compensation  | 
  | 
   | 
 (2,531)  | 
  | 
 (1,397)  | 
  | 
 (7,670)  | 
   | 
 (4,198)  | 
  | 
 
Depreciation and amortization  | 
  | 
   | 
 (471)  | 
  | 
 (501)  | 
  | 
 (1,408)  | 
   | 
 (2,309)  | 
  | 
 
Operating income (loss)  | 
  | 
  | 
 (7,588)  | 
  | 
 (4,096)  | 
  | 
 (20,955)  | 
  | 
 (6,921)  | 
  | 
 
Interest expense  | 
  | 
  | 
 (6,123)  | 
  | 
 (5,967)  | 
  | 
 (19,008)  | 
   | 
 (17,039)  | 
  | 
 
Share of earnings (loss) of affiliates, net  | 
  | 
   | 
 61,633  | 
  | 
 84,739  | 
  | 
 141,882  | 
   | 
 126,952  | 
  | 
 
Gain (loss) on dilution of investment in affiliate  | 
  | 
   | 
 (11,219)  | 
  | 
 (3,203)  | 
  | 
 (68,944)  | 
   | 
 (35,165)  | 
  | 
 
Realized and unrealized gains (losses) on financial instruments, net  | 
  | 
   | 
 (433)  | 
  | 
 5,678  | 
  | 
 (433)  | 
   | 
 3,659  | 
  | 
 
Other, net  | 
  | 
   | 
 350  | 
  | 
 250  | 
  | 
 1,179  | 
   | 
 668  | 
  | 
 
Earnings (loss) before income taxes  | 
  | 
$  | 
 36,620  | 
  | 
 77,401  | 
  | 
 33,721  | 
   | 
 72,154  | 
  | 
 
 
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