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Debt - Narrative (Details)					1 Months Ended	12 Months Ended
Debt - Narrative (Details)	Jul. 05, 2022 USD ($)	Mar. 28, 2022 USD ($)	Feb. 10, 2021 USD ($)	Sep. 25, 2018 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2023	May 30, 2022 USD ($)	May 06, 2022 USD ($)
Debt Instrument [Line Items]
Capitalized deferred debt issuance costs					$ 18,800,000	$ 18,800,000
Debt issuance costs and discounts					29,400,000	29,400,000	$ 16,100,000
Amortization of deferred issuance costs						6,400,000	4,000,000.0	$ 2,100,000
Interest expense
Debt Instrument [Line Items]
Amortization of deferred issuance costs						5,500,000	3,100,000
Unsecured notes
Debt Instrument [Line Items]
Fair market value of notes					$ 308,400,000	$ 308,400,000	$ 365,800,000
Bank Overdrafts
Debt Instrument [Line Items]
Interest rate at period end (percent)					3.39%	3.39%	0.55%
Bank overdraft facilities					$ 1,900,000	$ 1,900,000	$ 1,800,000
Bank overdraft outstanding					$ 200,000	200,000	$ 0
Commitment fees						$ 0
French Employee Profit Sharing Liability
Debt Instrument [Line Items]
French Employee Profit Sharing interest percent					1.33%	1.33%	0.20%
Line of Credit \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Credit facility term	1 month
Basis spread on variable rate (percent)	1.00%
Line of Credit \| Revolving facility - U.S. dollar borrowings \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.00%
Line of Credit \| Revolving facility - U.S. dollar borrowings \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.50%
Line of Credit \| Revolving facility - U.S. dollar borrowings \| Fed Funds Effective Rate Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.50%
Line of Credit \| Revolving facility - U.S. dollar borrowings \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.00%
Line of Credit \| Revolving facility - U.S. dollar borrowings \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.50%
Credit Agreement
Debt Instrument [Line Items]
Effective interest rate on debt facilities (percent)						5.11%	4.04%
Credit Agreement \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowings under credit facility				$ 700,000,000
EBITDA ratio				5.50
Interest coverage ratio				3.00
Credit Agreement \| Line of Credit \| Forecast
Debt Instrument [Line Items]
EBITDA ratio									4.50
Credit Agreement \| Line of Credit \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Maximum borrowings under credit facility				$ 500,000,000							$ 600,000,000
Credit facility term				5 years
Credit Agreement \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Maximum borrowings under credit facility				$ 400,000,000
Term loan A facility \| Term Loan
Debt Instrument [Line Items]
Average interest rate (percent)					7.17%	7.17%
Term loan A facility \| Line of Credit \| Term Loan
Debt Instrument [Line Items]
Credit facility term				7 years
Face amount				$ 200,000,000
Term loan A facility \| Line of Credit \| Term Loan \| Fed Funds Effective Rate Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.50%
Term loan A facility \| Line of Credit \| Term Loan \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.00%
Term loan A facility \| Line of Credit \| Term Loan \| Secured Overnight Financing Rate (SOFR) \| Expected \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.25%
Term loan A facility \| Line of Credit \| Term Loan \| Secured Overnight Financing Rate (SOFR) \| Expected \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.75%
Term loan A facility \| Line of Credit \| Term Loan \| Base Rate \| Expected \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.25%
Term loan A facility \| Line of Credit \| Term Loan \| Base Rate \| Expected \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.75%
Term loan B facility \| Term Loan
Debt Instrument [Line Items]
Average interest rate (percent)					8.19%	8.19%
Term loan B facility \| Term Loan \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (percent)			2.75%
Term loan B facility \| Term Loan \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (percent)			375.00%
Term loan B facility \| Term Loan \| Minimum Reserve Adjusted London Interbank Offered Rate Floor Rate
Debt Instrument [Line Items]
Basis spread on variable rate (percent)			75.00%
Term loan B facility \| Line of Credit \| Term Loan
Debt Instrument [Line Items]
Credit facility term			7 years
Face amount			$ 350,000,000
Incremental loans			$ 250,000,000
Repayments of debt	$ 445,900,000
Delayed draw term loan \| Term Loan
Debt Instrument [Line Items]
Average interest rate (percent)					6.92%	6.92%
Delayed draw term loan \| Line of Credit \| Term Loan
Debt Instrument [Line Items]
Maximum borrowings under credit facility											650,000,000
Proceeds from lines of credit	650,000,000
Neenah, Inc. Global Secured Revolving Credit Facility \| Line of Credit \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Repayments of lines of credit	59,000,000
Revolving facility - U.S. dollar borrowings \| Line of Credit \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Repayments of long-term lines of credit	$ 100,000,000				$ 127,000,000
Senior 364-Day Unsecured Bridge Facility \| Bridge Loan
Debt Instrument [Line Items]
Credit facility term		364 days
German loan agreement		$ 648,000,000
Senior 364-Day Unsecured Bridge Facility \| Line of Credit \| Revolving facility - U.S. dollar borrowings \| Bridge Loan
Debt Instrument [Line Items]
German loan agreement											50,000,000
Senior Secured Revolving Credit Facility \| Line of Credit \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Maximum borrowings under credit facility		$ 500,000,000									$ 0
6.875% senior unsecured notes due October 1, 2026 \| Unsecured notes
Debt Instrument [Line Items]
Face amount				$ 350,000,000
Interest rate (percent)				6.875%	6.875%	6.875%
Interest rate at period end (percent)					7.248%	7.248%
6.875% senior unsecured notes due October 1, 2026 \| Corporate Bond Securities
Debt Instrument [Line Items]
Interest rate (percent)					6.875%	6.875%
Revolving credit agreement \| Revolving facility - U.S. dollar borrowings
Debt Instrument [Line Items]
Average interest rate (percent)					7.03%	7.03%
German loan agreement \| German loan agreement
Debt Instrument [Line Items]
Face amount										$ 10,700,000
Average interest rate (percent)										1.75%