Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We have established and implemented processes to assess, identify and manage material cybersecurity risks. Cybersecurity risks are assessed, identified, and managed by our Executive Director of Cybersecurity and Infrastructure, with direct supervision by our Chief Information Officer (“CIO”) and with the assistance of our internal audit and legal teams. Our Executive Director of Cybersecurity and Infrastructure shares information regarding such risks with our management’s senior level information security council (the “Information Security Council”), which consists of our CIO, Senior Vice President and Chief Financial Officer, Vice President and Chief Technical Officer, Senior Vice President and Chief Legal Officer & Corporate Secretary, Senior Vice President of Strategy and President, Industrial Solutions and Director of Internal Audit & Enterprise Risk Management, which supports the Audit Committee’s oversight of cybersecurity risk, including by providing regular reports on various cybersecurity matters. We have in place robust physical, technical, administrative and organizational controls for the securing of our information systems. We maintain a comprehensive, risk-based, third-party risk management process to identify, assess and manage cybersecurity risks associated with third-party service providers. Third-party service providers undergo thorough pre-engagement due diligence, including security and privacy assessments. All contracts with such third-party service providers are required to contain security and data processing terms no less stringent than those employed by us in safeguarding our own data. Any third-party service providers with access to confidential or sensitive data are subject to ongoing oversight activities, including assessments and audits, throughout the lifetime of the engagement. Additionally, we maintain an incident response plan (the “Incident Response Plan”), which establishes a comprehensive, effective, and repeatable process for identifying, escalating and responding to cybersecurity incidents. We test and evaluate the Incident Response Plan, including contingency and recovery plans, on a regular basis, and we develop, implement and review contingency and recovery plans for information systems, both internal and vendor managed. The results of such assessments drive changes and enhancements to governance, policies, procedures, technologies, and partner decisions to continuously monitor and improve our cybersecurity risk management. The Information Security Council practices the procedures of the Incident Response Plan through tabletop exercises facilitated by external consultants. We also leverage third-party support, including vendors, consultants, and assessors, to analyze risk exposure, to identify remediation opportunities and to reduce our overall cybersecurity risk. Previous cybersecurity incidents have not materially affected us, including our business strategy, financial condition, results of operations or cash flows. However, risks from cybersecurity threats, including but not limited to security breaches, computer malware, ransom attacks, other cyber-attacks, or other similar threats may materially affect us, including our business, financial condition, results of operations or cash flows.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	We have established and implemented processes to assess, identify and manage material cybersecurity risks. Cybersecurity risks are assessed, identified, and managed by our Executive Director of Cybersecurity and Infrastructure, with direct supervision by our Chief Information Officer (“CIO”) and with the assistance of our internal audit and legal teams. Our Executive Director of Cybersecurity and Infrastructure shares information regarding such risks with our management’s senior level information security council (the “Information Security Council”), which consists of our CIO, Senior Vice President and Chief Financial Officer, Vice President and Chief Technical Officer, Senior Vice President and Chief Legal Officer & Corporate Secretary, Senior Vice President of Strategy and President, Industrial Solutions and Director of Internal Audit & Enterprise Risk Management, which supports the Audit Committee’s oversight of cybersecurity risk, including by providing regular reports on various cybersecurity matters.
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 oversees the Company’s overall ERM process, including the management of risks arising from cybersecurity threats. The Audit Committee is responsible for overseeing our risk exposure to information security, cybersecurity and data protection, as well as the steps management has taken to monitor and control such exposures, and regularly provides reports to the Board on cybersecurity risk management. The Audit Committee Charter explicitly sets forth the Audit Committee’s responsibility for such oversight. The Audit Committee receives regular presentations and reports from our Executive Director of Cybersecurity and Infrastructure and our CIO on cybersecurity risks and prompt and timely information regarding any cybersecurity incident that meets established reporting thresholds. Our Executive Director of Cybersecurity and Infrastructure and our CIO also report to the Board at least annually and to the Audit Committee at least quarterly on current internal and external developments in cybersecurity, as part of the Board’s enterprise risk management review, and the Board receives reports of Audit Committee discussions regarding its oversight of cybersecurity risk. We have protocols by which certain cybersecurity incidents that meet established reporting thresholds are escalated internally and, where appropriate, reported to the Audit Committee or the Board in a timely manner.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board oversees the Company’s overall ERM process, including the management of risks arising from cybersecurity threats. The Audit Committee is responsible for overseeing our risk exposure to information security, cybersecurity and data protection, as well as the steps management has taken to monitor and control such exposures, and regularly provides reports to the Board on cybersecurity risk management. The Audit Committee Charter explicitly sets forth the Audit Committee’s responsibility for such oversight.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee receives regular presentations and reports from our Executive Director of Cybersecurity and Infrastructure and our CIO on cybersecurity risks and prompt and timely information regarding any cybersecurity incident that meets established reporting thresholds. Our Executive Director of Cybersecurity and Infrastructure and our CIO also report to the Board at least annually and to the Audit Committee at least quarterly on current internal and external developments in cybersecurity, as part of the Board’s enterprise risk management review, and the Board receives reports of Audit Committee discussions regarding its oversight of cybersecurity risk. We have protocols by which certain cybersecurity incidents that meet established reporting thresholds are escalated internally and, where appropriate, reported to the Audit Committee or the Board in a timely manner.
Cybersecurity Risk Role of Management [Text Block]	The Board oversees the Company’s overall ERM process, including the management of risks arising from cybersecurity threats. The Audit Committee is responsible for overseeing our risk exposure to information security, cybersecurity and data protection, as well as the steps management has taken to monitor and control such exposures, and regularly provides reports to the Board on cybersecurity risk management. The Audit Committee Charter explicitly sets forth the Audit Committee’s responsibility for such oversight. The Audit Committee receives regular presentations and reports from our Executive Director of Cybersecurity and Infrastructure and our CIO on cybersecurity risks and prompt and timely information regarding any cybersecurity incident that meets established reporting thresholds. Our Executive Director of Cybersecurity and Infrastructure and our CIO also report to the Board at least annually and to the Audit Committee at least quarterly on current internal and external developments in cybersecurity, as part of the Board’s enterprise risk management review, and the Board receives reports of Audit Committee discussions regarding its oversight of cybersecurity risk. We have protocols by which certain cybersecurity incidents that meet established reporting thresholds are escalated internally and, where appropriate, reported to the Audit Committee or the Board in a timely manner. Our Global Cybersecurity Operations function is a global team led by our Executive Director of Cybersecurity and Infrastructure, who reports to our CIO. In turn, our CIO reports to our Chief Financial Officer. The Information Security Council provides additional oversight for assessing and managing cybersecurity risk. Our Executive Director of Cybersecurity and Infrastructure has over 15 years of cybersecurity and information technology experience, including as Director of Cybersecurity for various institutions. Our Executive Director of Cybersecurity and Infrastructure has a Bachelor of Science in Information Science and Technology and a Master’s of Science in Information Sciences, Cybersecurity, and Information Assurance, and a Doctorate in Cybersecurity; he also has a Certified Information Systems Security Professional certification, a GIAC Information Security Professional certification and a CompTIA Security+ certification. Our CIO has over 30 years of experience in information technology, having held multiple executive leadership roles, including CIO positions at several organizations. Our CIO holds a bachelor’s degree in computer science. Each of the other members of the Information Security Council have relevant educational and industry experience, including managing risks at our Company and at similar companies.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Audit Committee receives regular presentations and reports from our Executive Director of Cybersecurity and Infrastructure and our CIO on cybersecurity risks and prompt and timely information regarding any cybersecurity incident that meets established reporting thresholds. Our Executive Director of Cybersecurity and Infrastructure and our CIO also report to the Board at least annually and to the Audit Committee at least quarterly on current internal and external developments in cybersecurity, as part of the Board’s enterprise risk management review, and the Board receives reports of Audit Committee discussions regarding its oversight of cybersecurity risk. We have protocols by which certain cybersecurity incidents that meet established reporting thresholds are escalated internally and, where appropriate, reported to the Audit Committee or the Board in a timely manner.Our Global Cybersecurity Operations function is a global team led by our Executive Director of Cybersecurity and Infrastructure, who reports to our CIO. In turn, our CIO reports to our Chief Financial Officer. The Information Security Council provides additional oversight for assessing and managing cybersecurity risk
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our Executive Director of Cybersecurity and Infrastructure has over 15 years of cybersecurity and information technology experience, including as Director of Cybersecurity for various institutions. Our Executive Director of Cybersecurity and Infrastructure has a Bachelor of Science in Information Science and Technology and a Master’s of Science in Information Sciences, Cybersecurity, and Information Assurance, and a Doctorate in Cybersecurity; he also has a Certified Information Systems Security Professional certification, a GIAC Information Security Professional certification and a CompTIA Security+ certification. Our CIO has over 30 years of experience in information technology, having held multiple executive leadership roles, including CIO positions at several organizations. Our CIO holds a bachelor’s degree in computer science. Each of the other members of the Information Security Council have relevant educational and industry experience, including managing risks at our Company and at similar companies.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Audit Committee receives regular presentations and reports from our Executive Director of Cybersecurity and Infrastructure and our CIO on cybersecurity risks and prompt and timely information regarding any cybersecurity incident that meets established reporting thresholds. Our Executive Director of Cybersecurity and Infrastructure and our CIO also report to the Board at least annually and to the Audit Committee at least quarterly on current internal and external developments in cybersecurity, as part of the Board’s enterprise risk management review, and the Board receives reports of Audit Committee discussions regarding its oversight of cybersecurity risk. We have protocols by which certain cybersecurity incidents that meet established reporting thresholds are escalated internally and, where appropriate, reported to the Audit Committee or the Board in a timely manner. Our Global Cybersecurity Operations function is a global team led by our Executive Director of Cybersecurity and Infrastructure, who reports to our CIO. In turn, our CIO reports to our Chief Financial Officer. The Information Security Council provides additional oversight for assessing and managing cybersecurity risk.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Atmus Filtration Technologies Inc. 10-K