v3.26.1
Basis of Presentation (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Dec. 17, 2025
USD ($)
shares
Nov. 26, 2025
D
$ / shares
shares
Nov. 24, 2025
Jul. 14, 2025
shares
Mar. 31, 2026
USD ($)
$ / shares
GCI Business          
Basis of Presentation          
Percentage of interest         100.00%
Class C          
Basis of Presentation          
Number of shares issued | shares 11,059,127        
Number of rights issued per share     0.3838    
Number of shares per right | shares   1      
Exercise price of a right | $ / shares   $ 27.2      
Percentage of discount from trading price   20.00%      
Threshold number of trading days for determining exercise price | D   10      
Proceeds from rights offering | $ $ 300        
Recurring | Level 1          
Basis of Presentation          
Cash equivalents | $         $ 316
Affiliated Entity | Liberty Broadband | Non-voting preferred stock          
Basis of Presentation          
Number of shares issued | shares       10,000  
Dividend rate         12.00%
Liquidation price | $ / shares         $ 1,000
Affiliated Entity | Liberty Media          
Basis of Presentation          
Amount reimbursable | $         $ 2