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Cybersecurity Risk Management and Strategy Disclosure
12 Months Ended
Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]

Risk Management and Strategy

GCI Liberty’s corporate level Information Technology (“IT”) and cybersecurity functions are provided by Liberty Media as part of the Services Agreement described in Part I, Item 1. “Business.” Through the Services Agreement, we participate in Liberty Media’s processes for assessing, identifying, and managing risks from cybersecurity threats at the corporate headquarters, as detailed below. GCI Holdings operates its own cybersecurity function with oversight from GCI Liberty.

We are committed to protecting the security and integrity of our systems, networks, databases and applications and, as a result, have implemented processes designed to prevent, assess, identify, and manage material risks associated with cybersecurity threats.  Cybersecurity risks are assessed as part of our enterprise risk assessment and risk management program and our cybersecurity risk management program is designed and assessed based on recognized frameworks, including the National Institute of Standards and Technology Cybersecurity Framework.

We rely on a multidisciplinary team, including our information security function, legal department, management, and third-party consultants, as described further below, to identify, assess, and manage cybersecurity threats and risks. We identify and assess risks from cybersecurity threats by monitoring and evaluating our threat environment and our risk profile using various methods including, using manual and automated tools, such as vulnerability scanning software, monitoring existing and emerging cybersecurity threats, analyzing reports of threats and threat actors, conducting scans of the threat environment, evaluating our industry’s risk profile, utilizing internal and external audits and assessments, and conducting threat and vulnerability assessments.

To manage and mitigate material risks from cybersecurity threats to our information systems and data, we implement and maintain various technical, physical and organizational measures, processes and policies. These measures include risk assessments, incident detection and response, vulnerability management, disaster recovery and business continuity plans, internal controls within our IT, security and other departments, encryption of data, network security controls, access controls, physical security, asset management, system monitoring, a vendor risk management program, employee cybersecurity awareness and training, phishing tests, and penetration testing. Cybersecurity awareness training is also made available to our board of directors.

In the event of a potential cybersecurity incident, or a series of related cybersecurity incidents, we have cybersecurity incident response frameworks in place at the corporate level and at GCI Holdings. These frameworks are a set of coordinated procedures and tasks that our incident response teams execute with the goal of ensuring timely and accurate identification, resolution and reporting of cybersecurity incidents both internally and externally, as necessary.

To operate our businesses, we utilize certain third-party service providers to perform a variety of operational functions. We have implemented a third-party risk management program to evaluate the cybersecurity practices of higher risk vendors and vendors that encounter our systems or data. We additionally engage and retain third-party consultants, legal advisors and assessors to keep us apprised of emerging third-party risk, defense and mitigation strategies, and governance best practices.

Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block]

We are committed to protecting the security and integrity of our systems, networks, databases and applications and, as a result, have implemented processes designed to prevent, assess, identify, and manage material risks associated with cybersecurity threats.  Cybersecurity risks are assessed as part of our enterprise risk assessment and risk management program and our cybersecurity risk management program is designed and assessed based on recognized frameworks, including the National Institute of Standards and Technology Cybersecurity Framework.

Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board of Directors Oversight [Text Block]

Role of the Board of Directors

Our board of directors has overall responsibility for risk oversight and has delegated to the Audit Committee primary enterprise risk oversight responsibility, including privacy and cybersecurity risk exposures, policies and practices, the steps management takes to detect, monitor and mitigate such risks and the potential impact of those exposures on our business, financial results, operations and reputation. The Audit Committee receives quarterly updates on the enterprise risk management program, including cybersecurity risks and the initiatives undertaken to identify, assess and mitigate such risks. This cybersecurity reporting may include threat and incident reporting, vulnerability detection reporting, risk mitigation metrics, systems and security operations updates, employee education initiatives, and internal audit observations, if applicable.

In addition to the efforts undertaken by the Audit Committee, the full board of directors regularly reviews matters relating to cybersecurity risk and cybersecurity risk management. Any material cybersecurity events would be brought to the attention of the full board of directors once the event is deemed material. We additionally use our incident response framework as part of the process we employ to keep our management and board of directors informed and to monitor the prevention, detection, mitigation, and remediation of cybersecurity incidents.

Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] Audit Committee
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] In addition to the efforts undertaken by the Audit Committee, the full board of directors regularly reviews matters relating to cybersecurity risk and cybersecurity risk management. Any material cybersecurity events would be brought to the attention of the full board of directors once the event is deemed material.
Cybersecurity Risk Role of Management [Text Block]

Role of Management

Through the Services Agreement with Liberty Media discussed in Part I, Item 1. “Business” of this Annual Report on Form 10-K, we have established a cross functional Information Security Steering Committee (“ISSC”) with executives from our Legal, Accounting, Internal Audit and Risk Management, Cybersecurity and Technology departments. The ISSC has management oversight responsibility for assessing and managing technology and operational risk, including information security, fraud, vendor, data protection and privacy, business continuity and resilience, and cybersecurity risks at the corporate level and our subsidiaries.

At GCI Holdings, there is an Enterprise Security Office (“ESO”), led by the Chief Information Security Officer (“CISO”), which is responsible for day-to-day management and oversight of subsidiary cybersecurity, including assessing, monitoring and mitigating cybersecurity risk. The CISO provides regular reporting to GCI executive management and the ISSC.

GCI Liberty has also established a Compliance Committee responsible for overseeing and monitoring all corporate compliance initiatives at GCI Holdings, including cybersecurity. The Compliance Committee is composed of members of GCI Liberty’s ISSC as well as GCI Holding’s executive leadership team, including the President & Chief Operating Officer, Chief Legal & Administrative Officer, and Chief Financial Officer. The CISO reports periodically to the Compliance Committee on cybersecurity risks and initiatives as well as any cybersecurity events, as applicable.

Our management team’s experience includes a diverse background in telecom and other industries, with decades of experience in various aspects of cybersecurity. Liberty Media’s Head of Cybersecurity has more than 15 years of cybersecurity, information technology and risk management experience and holds certifications in information privacy and information systems risks and controls. GCI Holding’s CISO has more than 20 years of experience and holds multiple certifications including Certified Information Security Systems Professional and Certified in Risk and Information System Control. Combined, they have worked at a variety of companies, including large consulting, private, and publicly traded companies, where they advised on, implemented and managed IT and cybersecurity programs and teams, developed tools and processes to protect internal & cloud networks, customer payment systems and telecommunications networks used by customers to transmit data. Together, the Liberty Media and GCI information security functions have extensive relevant education, professional certifications, and industry experience.

Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] Chief Information Security Officer
Cybersecurity Risk Management Expertise of Management Responsible [Text Block] Our management team’s experience includes a diverse background in telecom and other industries, with decades of experience in various aspects of cybersecurity. Liberty Media’s Head of Cybersecurity has more than 15 years of cybersecurity, information technology and risk management experience and holds certifications in information privacy and information systems risks and controls. GCI Holding’s CISO has more than 20 years of experience and holds multiple certifications including Certified Information Security Systems Professional and Certified in Risk and Information System Control. Combined, they have worked at a variety of companies, including large consulting, private, and publicly traded companies, where they advised on, implemented and managed IT and cybersecurity programs and teams, developed tools and processes to protect internal & cloud networks, customer payment systems and telecommunications networks used by customers to transmit data. Together, the Liberty Media and GCI information security functions have extensive relevant education, professional certifications, and industry experience
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]

GCI Liberty has also established a Compliance Committee responsible for overseeing and monitoring all corporate compliance initiatives at GCI Holdings, including cybersecurity. The Compliance Committee is composed of members of GCI Liberty’s ISSC as well as GCI Holding’s executive leadership team, including the President & Chief Operating Officer, Chief Legal & Administrative Officer, and Chief Financial Officer. The CISO reports periodically to the Compliance Committee on cybersecurity risks and initiatives as well as any cybersecurity events, as applicable.

Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true