Background and Basis of Presentation (Policies)	3 Months Ended
Background and Basis of Presentation (Policies)	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Consolidation and Presentation	Basis of Consolidation and Presentation These statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC") and, in accordance with those rules and regulations, do not include all information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Management believes that the disclosures made are adequate for a fair presentation of the Company’s results of operations, financial position and cash flows. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the results of operations, financial position and cash flows for the interim periods presented herein. The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make extensive use of estimates and assumptions that affect the reported amounts and disclosures. Actual results may vary from these estimates. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s most recent Annual Report on Form 10-K. The results of operations for any interim period are not necessarily indicative of the results of operations to be expected for the full year. The condensed consolidated financial statements of Neenah and its subsidiaries included herein are unaudited. The condensed consolidated financial statements include the financial statements of the Company and its wholly owned and majority owned subsidiaries. Intercompany balances and transactions have been eliminated.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company measures the fair value of financial instruments in accordance with Accounting Standards Codification ("ASC") Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820") which establishes a framework for measuring fair value. ASC Topic 820 provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).
Revenue from Contracts with Customers	Revenue from Contracts with Customers The Company recognizes sales revenue at a point in time following the transfer of control of the product to the customer, which typically occurs upon shipment or delivery depending on the terms of the underlying contracts. Sales are reported net of allowable discounts and estimated returns. Reserves for cash discounts, trade allowances and sales returns are estimated using historical experience. The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill our promise to transfer the associated products. Accordingly, the Company records customer payments of shipping and handling costs as a component of net sales and classifies such costs as a component of cost of sales. The Company excludes tax amounts assessed by governmental authorities that are both (i) imposed on and concurrent with a specific revenue-producing transaction and (ii) collected from customers from our measurement of transaction prices. Accordingly, such tax amounts are not included as a component of net sales or cost of sales. The Company considers each transaction/shipment as a separate performance obligation. Neenah recognizes revenue when the title transfers to the customer. As such, the remaining performance obligations at period end are not considered significant.
Accounting Standard Changes	Accounting Standards ChangesAs of March 31, 2022, there were no amendments to the ASC that will have or are reasonably likely to have a material effect on the Company’s financial position, results of operations or cash flows upon adoption.

Disclosure of accounting policy for revenue from contract with customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Neenah Inc 10-Q