Leases (Details) - GCI Holdings  | 
12 Months Ended | 
|---|---|
Dec. 31, 2023  | |
| Lessee, Lease, Description [Line Items] | |
| Lessee, Operating Lease, Existence of Option to Extend [true false] | true | 
| Lessee, Operating Lease, Existence of Option to Terminate [true false] | true | 
| Minimum | |
| Lessee, Lease, Description [Line Items] | |
| Lease term (in years) | 1 year | 
| Operating lease, renewal term | 2 years | 
| Termination period | 30 days | 
| Maximum | |
| Lessee, Lease, Description [Line Items] | |
| Lease term (in years) | 27 years | 
| Operating lease, renewal term | 35 years | 
| Termination period | 14 years | 
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- Definition Lessee, Operating Lease, Termination Period No definition available. 
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Indicates (true false) whether lessee has option to extend operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Indicates (true false) whether lessee has option to terminate operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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