Stock-Based Compensation - Grants of Awards (Details)	3 Months Ended
Mar. 31, 2026 $ / shares shares
Stock-Based Compensation
Dividend rate (in %)	0.00%
Series A GCI Group common stock
Stock-Based Compensation
Grant of options to purchase	0
Series B GCI Group common stock
Stock-Based Compensation
Grant of options to purchase	0
Series C GCI Group common stock
Stock-Based Compensation
Grant of options to purchase	0
Time-based restricted stock units \| Employees and directors \| Series C GCI Group common stock
Stock-Based Compensation
RSU's granted	81,000
Weighted average GDFV \| $ / shares	$ 36.97
Time-based restricted stock units \| Employees and directors \| Series C GCI Group common stock \| Minimum
Stock-Based Compensation
Vesting period	1 year
Time-based restricted stock units \| Employees and directors \| Series C GCI Group common stock \| Maximum
Stock-Based Compensation
Vesting period	3 years
Performance based restricted stock units \| Employees \| Series C GCI Group common stock
Stock-Based Compensation
RSU's granted	111,000
Weighted average GDFV \| $ / shares	$ 36.97
Performance based restricted stock units \| Chief executive officer \| Series C GCI Group common stock
Stock-Based Compensation
RSU's granted	16,000
Weighted average GDFV \| $ / shares	$ 36.97

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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