Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)

v3.24.0.1
Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Revenue $ 981 $ 975 $ 988
GCI Holdings      
Disaggregation of Revenue [Line Items]      
Revenue 981 969 970
GCI Holdings | Lease, grant, and revenue from subsidies      
Disaggregation of Revenue [Line Items]      
Revenue 77 77 77
GCI Holdings | Consumer Revenue | Data      
Disaggregation of Revenue [Line Items]      
Revenue 233 231 214
GCI Holdings | Consumer Revenue | Wireless      
Disaggregation of Revenue [Line Items]      
Revenue 143 143 134
GCI Holdings | Consumer Revenue | Other Revenue      
Disaggregation of Revenue [Line Items]      
Revenue 41 55 86
GCI Holdings | Business Revenue | Data      
Disaggregation of Revenue [Line Items]      
Revenue 424 392 364
GCI Holdings | Business Revenue | Wireless      
Disaggregation of Revenue [Line Items]      
Revenue 45 47 68
GCI Holdings | Business Revenue | Other Revenue      
Disaggregation of Revenue [Line Items]      
Revenue $ 18 24 27
Corporate and other      
Disaggregation of Revenue [Line Items]      
Revenue   $ 6 $ 18