Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Oct. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	The Company’s information technology systems, as well as those of the Company’s third-party service providers, are subject to cybersecurity threats. Significant cybersecurity threats, including intrusions into, compromises of, or disruptions in the information technology systems of the Company or its third-party service providers could adversely affect the Company’s financial condition and results of operations. The Company maintains and updates its information technology systems to mitigate the risk of cybersecurity threats. The Board of Directors have oversight responsibility for the Company’s cybersecurity risks. While the Company’s employees play a key role in cybersecurity, the Company’s Chief Information Officer, General Counsel and other members of management have shared responsibility for assessing and managing the Company’s cybersecurity risks. The Company’s management has sufficient knowledge, experience and expertise for assessing and managing the Company’s cybersecurity risks. The Board of Directors and Audit Committee receive updates from management regarding cybersecurity risks, cybersecurity threats that could impact the Company and cybersecurity initiatives to enhance the Company’s cybersecurity practices. The Audit Committee also receives updates on the results of assessments and audits of the Company’s information technology systems and controls. The Company has information technology security practices to protect its information technology systems and data and to monitor for potential cybersecurity threats. These practices are integrated into the Company’s risk management framework and include: •cybersecurity controls embedded in the Company’s information technology systems; •implementation of changes to address potential threats and vulnerabilities of the Company’s information technology systems; •incident response programs, including proactive simulations, to identify and manage cybersecurity threats, risks or incidents; •participation in industry forums and collaboration with peers; •security awareness and data protection training for applicable employees; and •engaging third party services and tools to periodically assess and/or monitor cybersecurity threat environment and the company’s cybersecurity posture. Additionally, the Company assesses and manages cybersecurity threats associated with its third-party service providers’ information technology systems that could compromise the Company’s information security or data. Identified cybersecurity threats are communicated to management for review, response, and mitigation as appropriate.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	The Company has information technology security practices to protect its information technology systems and data and to monitor for potential cybersecurity threats. These practices are integrated into the Company’s risk management framework and include: •cybersecurity controls embedded in the Company’s information technology systems; •implementation of changes to address potential threats and vulnerabilities of the Company’s information technology systems; •incident response programs, including proactive simulations, to identify and manage cybersecurity threats, risks or incidents; •participation in industry forums and collaboration with peers; •security awareness and data protection training for applicable employees; and •engaging third party services and tools to periodically assess and/or monitor cybersecurity threat environment and the company’s cybersecurity posture.
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]	The Board of Directors have oversight responsibility for the Company’s cybersecurity risks.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board of Directors and Audit Committee receive updates from management regarding cybersecurity risks, cybersecurity threats that could impact the Company and cybersecurity initiatives to enhance the Company’s cybersecurity practices. The Audit Committee also receives updates on the results of assessments and audits of the Company’s information technology systems and controls.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board of Directors and Audit Committee receive updates from management regarding cybersecurity risks, cybersecurity threats that could impact the Company and cybersecurity initiatives to enhance the Company’s cybersecurity practices. The Audit Committee also receives updates on the results of assessments and audits of the Company’s information technology systems and controls.
Cybersecurity Risk Role of Management [Text Block]	the Company’s Chief Information Officer, General Counsel and other members of management have shared responsibility for assessing and managing the Company’s cybersecurity risks. The Company’s management has sufficient knowledge, experience and expertise for assessing and managing the Company’s cybersecurity risks.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	the Company’s Chief Information Officer, General Counsel and other members of management have shared responsibility for assessing and managing the Company’s cybersecurity risks.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The Company’s management has sufficient knowledge, experience and expertise for assessing and managing the Company’s cybersecurity risks.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Board of Directors and Audit Committee receive updates from management regarding cybersecurity risks, cybersecurity threats that could impact the Company and cybersecurity initiatives to enhance the Company’s cybersecurity practices. The Audit Committee also receives updates on the results of assessments and audits of the Company’s information technology systems and controls.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Quanex Building Products CORP 10-K