General	12 Months Ended
General	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Nature of Business Organization and operations - Mativ Holdings, Inc. is a global leader in specialty materials, solving our customers’ most complex challenges by engineering bold, innovative solutions that connect, protect, and purify our world. Mativ manufactures globally through our family of business-to-business and consumer product brands. Mativ targets premium applications across diversified and growing end-markets, from filtration to healthcare to sustainable packaging and more. Our broad portfolio of technologies combines polymers, fibers, and resins to optimize the performance of our customers’ products across multiple stages of the value chain. On July 6, 2022, SWM completed a merger transaction involving Neenah, Inc. ("Neenah"). A wholly-owned subsidiary of SWM merged with and into Neenah, with Neenah surviving the Merger as a direct and wholly-owned subsidiary of SWM. Effective as of the closing date of the Merger, SWM changed its name to Mativ Holdings, Inc. ("Mativ," "we," "our," or the "Company"). On November 30, 2023, the Company completed the sale of the Engineered Papers business ("EP business") to Evergreen Hill Enterprise Pte. Ltd. ("Evergreen Hill Enterprise"). With the sale of the EP business (the "EP Divestiture"), Mativ ceased participating in tobacco-based products markets. Reportable Segments - As part of an organizational realignment initiative (the "Plan") effective during the first quarter of 2024, we reorganized into two new reportable segments: (1) Filtration & Advanced Materials ("FAM"), focused primarily on filtration media and components, advanced films, coating and converting solutions, and extruded mesh products, and (2) Sustainable & Adhesive Solutions ("SAS"), focused primarily on tapes, labels, liners, specialty paper, packaging and healthcare solutions. The change in reportable segments reflects the realignment of management and the related internal review of our operating segments. The prior period presentation has been recasted to align with our current segment reporting structure. Basis of Presentation The accompanying consolidated financial statements and the notes thereto have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). The preparation of financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. The Company believes the estimates and assumptions used in the preparation of these consolidated financial statements are reasonable, based upon currently available facts and known circumstances. Actual results may differ from those estimates and assumptions as a result of a number of factors, including those discussed elsewhere in this report and in its other public filings from time to time. Reclassifications Selling expense and General expense prior year amounts in the Consolidated Statements of Income (Loss) have been reclassified to Selling and general expense and Intangible asset amortization expense to conform to the current year presentation for comparative purposes. Certain prior year amounts in the Consolidated Statements of Comprehensive Income (Loss) have been reclassified to conform to the current year presentation for comparative purposes. Certain prior year amounts in the Notes to Consolidated Financial Statements have been reclassified to conform to the current year segments for comparative purposes. Principles of Consolidation The consolidated financial statements include the accounts of the Company and wholly-owned, majority-owned and controlled subsidiaries. Effective with the sale, the EP business is presented as a discontinued operation for all periods presented. The consolidated financial statements and the notes thereto, unless otherwise indicated, are on a continuing operations basis. Refer to Note 9. Discontinued Operations for more information on the discontinued operation and transaction. The financial statements and information set forth herein are as of and for the year ended December 31, 2024 and represent the merged company operations of SWM and Neenah and their respective subsidiaries on a consolidated basis effective as of July 6, 2022 as a result of the Merger. Because SWM was deemed the accounting acquirer under GAAP, the historical financial statements of SWM are presented as the historical financial statements of the consolidated company prior to the Merger. Accordingly, references to "Mativ," "the Company," "we," or "our" means SWM and its subsidiaries when referring to periods prior to the Merger, and means Mativ Holdings, Inc. when referring to the periods after the Merger. Use of Estimates The preparation of financial statements in conformity with GAAP requires estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the revenues and expenses during the reporting period. Actual results could differ significantly from these estimates. The significant estimates underlying our consolidated financial statements include, but are not limited to, inventory valuation, goodwill valuation, useful lives of tangible and intangible assets, business acquisitions, equity-based compensation, derivatives, receivables valuation, pension, postretirement and other benefits, taxes and contingencies.