v3.25.2
Segment Information - Performance Measures (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue $ 261 $ 246 $ 527 $ 491  
Adjusted OIBDA 99 80 198 165  
Gross receivables 140   140   $ 193
Deferred revenue 34   34   $ 33
Operating segments | GCI Holdings          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 261 246 527 491  
Adjusted OIBDA 108 86 219 176  
Operating segments | GCI Holdings | Lease, grant, and revenue from subsidies          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 23 20 47 39  
Operating segments | GCI Holdings | Consumer revenue | Data          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 60 60 121 120  
Operating segments | GCI Holdings | Consumer revenue | Wireless          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 35 34 69 69  
Operating segments | GCI Holdings | Consumer revenue | Other revenue          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 9 10 18 19  
Operating segments | GCI Holdings | Business revenue | Data          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 124 108 251 215  
Operating segments | GCI Holdings | Business revenue | Wireless          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 8 10 16 21  
Operating segments | GCI Holdings | Business revenue | Other revenue          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenue 2 4 5 8  
Corporate and other          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Adjusted OIBDA $ (9) $ (6) $ (21) $ (11)