Quarterly report [Sections 13 or 15(d)]

Segment Information - Performance Measures (Details)

v3.25.1
Segment Information - Performance Measures (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 266 $ 245  
Adjusted OIBDA 99 85  
Gross receivables 175   $ 193
Deferred revenue 32   $ 33
Operating segments | GCI Holdings      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 266 245  
Adjusted OIBDA 111 90  
Operating segments | GCI Holdings | Lease, grant, and revenue from subsidies      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 24 19  
Operating segments | GCI Holdings | Consumer revenue | Data      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 61 60  
Operating segments | GCI Holdings | Consumer revenue | Wireless      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 34 35  
Operating segments | GCI Holdings | Consumer revenue | Other revenue      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 9 9  
Operating segments | GCI Holdings | Business revenue | Data      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 127 107  
Operating segments | GCI Holdings | Business revenue | Wireless      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 8 11  
Operating segments | GCI Holdings | Business revenue | Other revenue      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 3 4  
Corporate and other      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Adjusted OIBDA $ (12) $ (5)