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Fair Value of Financial Instruments - Fair Value of Financial Assets and Liabilities on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	$ 13.9	$ 13.6
Supplementary pension plan assets	40.1	19.4
Interest rate swap liability	(0.2)
Interest rate swap asset		0.3
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	0.0	0.0
Supplementary pension plan assets	0.0	0.0
Interest rate swap liability	0.0
Interest rate swap asset		0.0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	13.9	13.6
Supplementary pension plan assets	40.1	19.4
Interest rate swap liability	(0.2)
Interest rate swap asset		0.3
Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	0.0	0.0
Supplementary pension plan assets	0.0	0.0
Interest rate swap liability	$ 0.0
Interest rate swap asset		$ 0.0

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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+ Details

- Definition

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-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5B
-Subparagraph (SX 210.12-13B(Column E)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5B

+ Details

Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Abstract]
Cumulative foreign currency translation	$ (360.9)	$ (399.6)
Unrecognized pension benefit (net of tax expense of $3.9 in 2025 and $1.2 in 2024)	10.3	1.9
Unrealized gain on cash flow hedges (net of tax expense (benefit) of $(0.1) in 2025 and $0.1 in 2024)	10.2	10.6
Total accumulated other comprehensive loss	$ (340.4)	$ (387.1)

- Definition

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

+ References + Details

Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill and Other Intangible Assets [Abstract]
Balance Beginning	$ 913.8	$ 913.6
Change in goodwill relating to:
Foreign exchange translation	2.1	0.2
Total Changes	2.1	0.2
Balance Ending	915.9	913.8
Consumer & Specialties [Member]
Goodwill and Other Intangible Assets [Abstract]
Balance Beginning	345.7	345.2
Change in goodwill relating to:
Foreign exchange translation	1.5	0.5
Total Changes	1.5	0.5
Balance Ending	347.2	345.7
Engineered Solutions [Member]
Goodwill and Other Intangible Assets [Abstract]
Balance Beginning	568.1	568.4
Change in goodwill relating to:
Foreign exchange translation	0.6	(0.3)
Total Changes	0.6	(0.3)
Balance Ending	$ 568.7	$ 568.1

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2025

Stockholders’ Equity [Abstract]

Stock Option and Restricted Stock Unit Activity

The following table summarizes stock option and restricted stock unit activity for the Plans:


			Stock Options					Restricted Stock Units
	Shares						Weighted Average					Weighted Average
	Available						Exercise Price					Exercise Price
	for Grant			Shares			per Share ($)		Shares			per Share ($)
Balance January 1, 2023	1,080,460			1,363,418		$	62.22		176,594		$	66.32
Authorized	-			-			-		-			-
Granted	(358,463	)		255,620			66.08		102,843			66.01
Exercised/vested	-			(91,604	)		56.82		(46,141	)		64.25
Canceled	58,918			(12,972	)		67.54		(45,946	)		64.33
Balance December 31, 2023	780,915			1,514,462			63.15		187,350			67.15
Authorized	889,000			-			-		-			-
Granted	(299,640	)		196,471			66.72		103,169			66.79
Exercised/vested	-			(279,810	)		55.85		(47,876	)		67.19
Canceled	49,336			(5,487	)		66.76		(43,849	)		67.21
Balance December 31, 2024	1,419,611			1,425,636			65.06		198,794			66.94
Authorized	-			-			-		-			-
Granted	(268,623	)		174,874			76.75		93,749			76.55
Exercised/vested	-			(56,110	)		42.40		(50,146	)		67.38
Canceled	80,912			(28,015	)		70.06		(52,897	)		67.40
Balance December 31, 2025	1,231,900			1,516,385		$	67.16		189,500		$	71.45

Benefit Plans - Amounts Recognized in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Pension Benefits [Member]
Benefit Plans [Abstract]
Non-current asset	$ 40.1	$ 19.5
Current liability	(1.7)	(1.6)
Non-current liability	(17.8)	(18.9)
Net asset (liability) recognized	20.6	(1.0)
Postretirement Benefits [Member]
Benefit Plans [Abstract]
Non-current asset	0.0	0.0
Current liability	(0.1)	(0.1)
Non-current liability	(1.7)	(1.7)
Net asset (liability) recognized	$ (1.8)	$ (1.8)

- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Non-controlling Interests [Member]	Total
Balance at Dec. 31, 2022	$ 4.9	$ 487.6	$ 2,284.6	$ (366.5)	$ (831.1)	$ 33.7	$ 1,613.2
Net income (loss)	0.0	0.0	84.1	0.0	0.0	4.2	88.3
Other comprehensive income (loss)	0.0	0.0	0.0	(2.9)	0.0	(0.9)	(3.8)
Dividends declared	0.0	0.0	(8.1)	0.0	0.0	0.0	(8.1)
Dividends paid to non-controlling interests	0.0	0.0	0.0	0.0	0.0	(2.3)	(2.3)
Issuance of shares pursuant to employee stock compensation plans	0.0	5.1	0.0	0.0	0.0	0.0	5.1
Purchase of common stock for treasury	0.0	0.0	0.0	0.0	(14.2)	0.0	(14.2)
Stock-based compensation	0.0	11.3	0.0	0.0	0.0	0.0	11.3
Conversion of RSU’s for tax withholding	0.0	(2.8)	0.0	0.0	0.0	0.0	(2.8)
Balance at Dec. 31, 2023	4.9	501.2	2,360.6	(369.4)	(845.3)	34.7	1,686.7
Net income (loss)	0.0	0.0	167.1	0.0	0.0	3.8	170.9
Other comprehensive income (loss)	0.0	0.0	0.0	(17.7)	0.0	(1.3)	(19.0)
Dividends declared	0.0	0.0	(13.2)	0.0	0.0	0.0	(13.2)
Dividends paid to non-controlling interests	0.0	0.0	0.0	0.0	0.0	(1.0)	(1.0)
Issuance of shares pursuant to employee stock compensation plans	0.1	15.7	0.0	0.0	0.0	0.0	15.8
Purchase of common stock for treasury	0.0	0.0	0.0	0.0	(64.0)	0.0	(64.0)
Stock-based compensation	0.0	11.8	0.0	0.0	0.0	0.0	11.8
Conversion of RSU’s for tax withholding	0.0	(4.8)	0.0	0.0	0.0	0.0	(4.8)
Balance at Dec. 31, 2024	5.0	523.9	2,514.5	(387.1)	(909.3)	36.2	1,783.2
Net income (loss)	0.0	0.0	(18.4)	0.0	0.0	4.4	(14.0)
Other comprehensive income (loss)	0.0	0.0	0.0	46.7	0.0	(0.2)	46.5
Dividends declared	0.0	0.0	(14.2)	0.0	0.0	0.0	(14.2)
Dividends paid to non-controlling interests	0.0	0.0	0.0	0.0	0.0	(4.1)	(4.1)
Issuance of shares pursuant to employee stock compensation plans		2.4	0.0	0.0	0.0	0.0	2.4
Purchase of common stock for treasury	0.0	0.0	0.0	0.0	(58.9)	0.0	(58.9)
Stock-based compensation	0.0	11.9	0.0	0.0	0.0	0.0	11.9
Conversion of RSU’s for tax withholding	0.0	(3.1)	0.0	0.0	0.0	0.0	(3.1)
Balance at Dec. 31, 2025	$ 5.0	$ 535.1	$ 2,481.9	$ (340.4)	$ (968.2)	$ 36.3	$ 1,749.7

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

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+ Details

Stock-Based Compensation - Deferred Restricted Stock Units Activity (Details) - Deferred Restricted Stock Unit [Member] - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Stock-Based Compensation [Abstract]
Balance, beginning of year (in Shares)	198,794	187,350	176,594
Weighted average exercise price per share, beginning of year (in Dollars per share)	$ 66.94	$ 67.15	$ 66.32
Awards granted	93,749	103,169	102,843
Weighted average grant date fair value per share, granted	$ 76.55	$ 66.79	$ 66.01
Awards vested	(50,146)	(47,876)	(46,141)
Weighted average grant date fair value per share, vested	$ 67.38	$ 67.19	$ 64.25
Awards canceled	(52,897)	(43,849)	(45,946)
Weighted average grant date fair value per share, canceled	$ 67.4	$ 67.21	$ 64.33
Balance, end of year (in Shares)	189,500	198,794	187,350
Weighted average exercise price per share, end of year (in Dollars per share)	$ 71.45	$ 66.94	$ 67.15

Income Taxes - Income (Loss) from Operations Before Provision for Taxes by Domestic and Foreign Source (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Abstract]
Domestic	$ (172.4)	$ 40.7	$ (38.9)
Foreign	158.4	182.9	146.6
Income (loss) before tax and equity in earnings	$ (14.0)	$ 223.6	$ 107.7

- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Paragraph 32
-Subparagraph (f)
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-Section 50
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-Subparagraph (b)
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-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(8))
-Publisher FASB
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+ Details

Restructuring and Other Items

12 Months Ended

Dec. 31, 2025

Restructuring and Other Items [Abstract]

Restructuring and Other Items

Note 5. Restructuring and Other Items

In 2025, the Company initiated a cost savings program, primarily through workforce reductions and recorded a charge of $5.5 million for severance and other related costs associated with this program. Additionally, the Company recorded $9.5 million of restructuring and other items for the write-down of assets and other charges relating to the consolidation and shutdown of facilities.

In the third quarter of 2023, the Company recorded a $71.7 million non-cash impairment of long-lived assets charge related to its subsidiaries BMI Oldco Inc. (f/k/a Barretts Minerals Inc.) ("Oldco") and Barretts Ventures Texas LLC ("BVT") within the Consumer & Specialties segment. This impairment was triggered by increased claims and continued increases in legal costs, which led to the voluntary filing for relief under Chapter 11 of the U.S. Bankruptcy Code to address and comprehensively resolve Oldco’s liabilities associated with the talc claims. See Note 17 for further information.

In the second quarter of 2023, the Company initiated a restructuring and cost savings program to further streamline our cost structure as a result of organizational efficiencies gained through our 2023 resegmentation. As a result, the Company recorded a charge of $6.6 million for restructuring and other charges related to severance and other costs. In the third quarter of 2023, an incremental charge of $0.3 million was recorded relating to this program.

The following table outlines the amount of restructuring charges recorded within the Consolidated Statements of Income (Loss) and the segments they relate to:


	Year Ended December 31, 2025
(in millions of dollars)		2025		2024		2023
Asset Write-Downs
Consumer & Specialties	$	3.0	$	-	$	71.7
Engineered Solutions		1.7		-		-
Total asset write-down charges	$	4.7	$	-	$	71.7

Severance and other employee costs
Consumer & Specialties	$	6.5	$	-	$	0.9
Engineered Solutions		1.6		-		3.2
Corporate		2.2		-		2.8
Total severance and other employee costs	$	10.3	$	-	$	6.9

Total restructuring and other items	$	15.0	$	-	$	78.6

At December 31, 2025 and 2024, the Company had $4.9 million and $2.4 million, respectively, included within other current liabilities within our Consolidated Balance Sheets for cash expenditures needed to satisfy remaining obligations under these reorganization initiatives. The Company expects to pay these remaining restructuring obligations within the next twelve months.

The following table is a reconciliation of our restructuring liability balance as of December 31, 2025 and 2024:


	December 31,
(in millions of dollars)		2025			2024
Restructuring liability, beginning of period	$	2.4		$	3.8
Additional provisions		5.5			-
Cash payments and other		(3.0	)		(1.4	)
Restructuring liability, end of period	$	4.9		$	2.4

Restructuring and Other Items - Restructuring Charges by Segment (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Oct. 01, 2023	Jul. 02, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring and Other Items [Abstract]
Asset write-downs			$ 4.7	$ 0.0	$ 71.7
Severance and other employee costs	$ 0.3	$ 6.6	10.3	0.0	6.9
Total restructuring and other items			15.0	0.0	78.6
Operating Segments [Member]
Restructuring and Other Items [Abstract]
Asset write-downs					71.7
Operating Segments [Member] \| Consumer & Specialties [Member]
Restructuring and Other Items [Abstract]
Asset write-downs			3.0	0.0	71.7
Severance and other employee costs			6.5	0.0	0.9
Operating Segments [Member] \| Engineered Solutions [Member]
Restructuring and Other Items [Abstract]
Asset write-downs			1.7	0.0	0.0
Severance and other employee costs			1.6	0.0	3.2
Corporate [Member]
Restructuring and Other Items [Abstract]
Severance and other employee costs			$ 2.2	$ 0.0	$ 2.8

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Financial Instruments and Concentrations of Credit Risk	12 Months Ended
Financial Instruments and Concentrations of Credit Risk	Dec. 31, 2025
Financial Instruments and Concentrations of Credit Risk [Abstract]
Financial Instruments and Concentrations of Credit Risk	Note 14. Financial Instruments and Concentrations of Credit Risk The following methods and assumptions were used to estimate the fair value of each class of financial instrument: Cash and cash equivalents, short-term investments, accounts receivable and payable: The carrying amounts approximate fair value because of the short maturities of these instruments. Short-term debt and other liabilities: The carrying amounts of short-term debt and other liabilities approximate fair value because of the short maturities of these instruments. Long-term debt: The fair value of the long-term debt of the Company is estimated based on the quoted market prices for that debt or similar debt and approximates the carrying amount. Forward exchange contracts: The fair value of forward exchange contracts (used for hedging purposes) is based on information derived from active markets. If appropriate, the Company would enter into forward exchange contracts to mitigate the impact of foreign exchange rate movements on the Company’s operating results. It does not engage in speculation. Such foreign exchange contracts would offset losses and gains on the assets, liabilities, and transactions being hedged. Credit risk: The Company provides credit to customers in the ordinary course of business. The Company’s customer base is diverse and includes customers located throughout the world. Credit risk results from the possibility that a loss may occur from the failure of another party to perform according to the terms of the contracts. The Company regularly monitors its credit risk exposures and takes steps to mitigate the likelihood of these exposures resulting in an actual loss. In the second quarter of 2024, the Company entered into a Debtor-in-Possession Credit Agreement with Oldco (the "DIP Credit Agreement") and recorded a provision for credit losses of $30.0 million for the maximum principal amount under such Credit Agreement. In the second quarter of 2025, the Company agreed to amend the DIP Credit Agreement to increase the maximum principal amount under such Credit agreement by $30.0 million. See Note 17 for further information. The Company’s extension of credit is based on an evaluation of the customer’s financial condition and collateral is generally not required. The Company’s bad debt expense for the years ended December 31, 2025, 2024, and 2023 was $4.1 million, $1.4 million, and $2.8 million, respectively.

Segment and Related Information (Details)	12 Months Ended
Segment and Related Information (Details)	Dec. 31, 2025 Segment Productline
Segment and Related Information [Abstract]
Number of reportable segments (in Segment) \| Segment	2
Consumer & Specialties [Member]
Segment and Related Information [Abstract]
Number of product lines in segment	2
Engineered Solutions [Member]
Segment and Related Information [Abstract]
Number of product lines in segment	2

Benefit Plans - Pension Obligation and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits [Member]
Change in benefit obligations:
Beginning projected benefit obligation	$ 342.3	$ 368.9
Service cost	3.8	4.2	$ 4.5
Interest cost	16.5	16.0	16.0
Actuarial (gain)/loss	4.5	(25.4)
Benefits paid	(23.0)	(18.7)
Foreign exchange impact	5.3	(3.1)
Other	(0.1)	0.4
Ending projected benefit obligation	349.3	342.3	368.9
Change in plan assets:
Beginning fair value	341.3	317.4
Actual return on plan assets	38.0	33.5
Employer contributions	8.5	11.6
Plan participants' contributions	0.4	0.4
Benefits paid	(23.4)	(18.7)
Foreign exchange impact	5.1	(2.9)
Ending fair value	369.9	341.3	317.4
Funded status	20.6	(1.0)
Postretirement Benefits [Member]
Change in benefit obligations:
Beginning projected benefit obligation	1.8	2.0
Service cost	0.0	0.0	0.0
Interest cost	0.1	0.1	0.1
Actuarial (gain)/loss	(0.1)	(0.1)
Benefits paid	(0.1)	(0.1)
Foreign exchange impact	0.1	(0.1)
Other	0.0	0.0
Ending projected benefit obligation	1.8	1.8	2.0
Change in plan assets:
Beginning fair value	0.0	0.0
Actual return on plan assets	0.0	0.0
Employer contributions	0.1	0.1
Plan participants' contributions	0.0	0.0
Benefits paid	(0.1)	(0.1)
Foreign exchange impact	0.0	0.0
Ending fair value	0.0	0.0	$ 0.0
Funded status	$ (1.8)	$ (1.8)

Stock-Based Compensation - Stock Option Activity (Details) - Stock Options [Member] $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) $ / shares shares
Stock-Based Compensation [Abstract]
Balance, beginning of year (in Shares) \| shares	1,425,636
Weighted average exercise price per share, beginning of year (in Dollars per share) \| $ / shares	$ 65.06
Awards granted \| shares	174,874
Weighted average exercise price per share, granted \| $ / shares	$ 76.75
Awards exercised \| shares	(56,110)
Weighted average exercise price per share, exercised \| $ / shares	$ 42.4
Awards canceled \| shares	(28,015)
Weighted average exercise price per share, canceled \| $ / shares	$ 70.06
Awards expired \| shares	0
Weighted average exercise price per share, expired \| $ / shares	$ 0
Balance, end of year (in Shares) \| shares	1,516,385
Weighted average exercise price per share, end of year (in Dollars per share) \| $ / shares	$ 67.16
Weighted average remaining contractual life (years), outstanding	5 years 5 months 23 days
Aggregate intrinsic value, outstanding \| $	$ 1.7
Exercisable, end of year \| shares	1,149,623
Weighted Average Exercise Price per Share, exercisable, end of year \| $ / shares	$ 65.88
Weighted average remaining contractual life (years), exercisable	4 years 6 months 25 days
Aggregate intrinsic value, exercisable \| $	$ 1.7

Earnings (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2025

Earnings (Loss) Per Share [Abstract]

Computation of Basic and Diluted Earnings (Loss) Per Share


	Year Ended December 31,
(in millions of dollars, except per share data)		2025			2024		2023

Net income (loss) attributable to Minerals Technologies Inc.	$	(18.4	)	$	167.1	$	84.1

Weighted average shares outstanding		31.4			32.1		32.5
Dilutive effect of stock options and deferred restricted stock units		-			0.2		0.1
Weighted average shares outstanding, adjusted		31.4			32.3		32.6

Basic earnings (loss) per share attributable to MTI	$	(0.59	)	$	5.21	$	2.59

Diluted earnings (loss) per share attributable to MTI	$	(0.59	)	$	5.17	$	2.58

Benefit Plans - Estimated Future Benefit Payments (Details) $ in Millions	Dec. 31, 2025 USD ($)
Pension Benefits [Member]
Benefit Plans [Abstract]
2026	$ 25.5
2027	26.8
2028	26.7
2029	25.4
2030	25.7
2031-2035	124.7
Other Benefits [Member]
Benefit Plans [Abstract]
2026	0.1
2027	0.2
2028	0.2
2029	0.2
2030	0.2
2031-2035	$ 0.7

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Benefit Plans - Reconciliation of Changes in Fair Value Measurement of Plan Assets Using Significant Unobservable Inputs (Details) - Significant Unobservable Inputs (Level 3) [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Benefit Plans [Abstract]
Beginning balance	$ 5.5	$ 7.1
Purchases, sales, settlements	0.0	0.0
Actual (loss) return on plan assets still held at reporting date	0.1	(1.6)
Foreign exchange impact	0.1	0.0
Ending balance	$ 5.7	$ 5.5

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Long-Term Debt and Commitments (Tables)

12 Months Ended

Dec. 31, 2025

Long-Term Debt and Commitments [Abstract]

Long-Term Debt

The following is a summary of long-term debt:


	December 31,
(in millions of dollars)		2025		2024
Secured Credit Agreement:
Term Loan due 2031, net of unamortized discount and deferred financing costs of $6.5 million and $7.3 million	$	562.7	$	567.7

Senior Notes:
5.00% due 2028, net of unamortized deferred financing costs of $2.3 million and $3.2 million		397.7		396.8
Other debt		0.9		1.6
Total	$	961.3	$	966.1
Less: Current maturities		6.3		6.5
Long-term debt	$	955.0	$	959.6

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

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+ Details

Leases (Details) - USD ($) $ in Millions	12 Months Ended
Leases (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 18.8	$ 17.3	$ 16.8
Minimum [Member]
Leases [Abstract]
Remaining lease term	1 year
Maximum [Member]
Leases [Abstract]
Remaining lease term	45 years

Benefit Plans - Projected Benefit Obligation (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
U.S.Plans [Member]
Benefit Plans [Abstract]
Ending projected benefit obligation	$ 279.5	$ 275.2	$ 293.4
International Plans [Member]
Benefit Plans [Abstract]
Ending projected benefit obligation	$ 71.6	$ 68.9	$ 77.5

Revenue from Contracts with Customers

12 Months Ended

Dec. 31, 2025

Revenue from Contracts with Customers [Abstract]

Revenue from Contracts with Customers

Note 3. Revenue from Contracts with Customers

The Company's revenues are primarily derived from the sale of products in product lines within our Consumer & Specialties and Engineered Solutions businesses.

Our primary performance obligation (the sale of products) is satisfied upon shipment or delivery to our customers based on written sales terms, which is also when control is transferred. In most of our contracts in our Specialty Additives product line, which is in our Consumer & Specialties segment, the price per ton is based upon the total number of tons sold to the customer during the year. Under these contracts, the price billed to the customer for shipments during the year is based on periodic estimates of the total annual volume that will be sold to such customer. Revenues are adjusted at the end of each year to reflect the actual volume sold.

Revenue from sales of equipment, primarily in our High-Temperature Technologies product line within our Engineered Solutions segment, is recorded upon completion of installation and control is transferred to the customer. Revenue from services is recorded when the services have been performed. Included within our High-Temperature Technologies product line are certain consignment arrangements with certain customers in our Engineered Solutions segment. Revenues for these transactions are recorded when the consigned products are consumed by the customer and control is transferred.

Revenue where our performance obligations are satisfied in phases is recognized over time using certain input measures based on the measurement of the value transferred to the customer, including milestones achieved.

The following table disaggregates our revenue by major source (product line) for the years ended December 31, 2025, 2024, and 2023:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Net Sales
Household & Personal Care	$	512.8	$	530.0	$	517.6
Specialty Additives		584.9		610.2		642.6
Consumer & Specialties Segment		1,097.7		1,140.2		1,160.2

High-Temperature Technologies		704.7		713.2		720.9
Environmental & Infrastructure		270.2		265.1		288.8
Engineered Solutions Segment		974.9		978.3		1,009.7

Total net sales	$	2,072.6	$	2,118.5	$	2,169.9

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

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+ Details

Accounting Policies, by Policy (Policies)	12 Months Ended
Accounting Policies, by Policy (Policies)	Dec. 31, 2025
Summary of Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements include the accounts of the Company, its wholly and majority-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The Company employs accounting policies that are in accordance with U.S. generally accepted accounting principles and require management to make estimates and assumptions relating to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reported period. Significant estimates include those related to valuation of long-lived assets, goodwill, and other intangible assets, certain pension plan assumptions, valuation of deferred income tax assets, and litigation and environmental liabilities. Actual results could differ from those estimates.
Cash Equivalents and Short-term Investments	Cash Equivalents and Short-term Investments The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. Short-term investments consist of financial instruments, mainly bank deposits, with original maturities beyond three months, but less than twelve months. Short-term investments amounted to $3.6 million and $4.0 million at December 31, 2025 and 2024, respectively. There were no unrealized holding gains or losses on the short-term bank investments held at December 31, 2025.
Trade Accounts Receivable	Trade Accounts Receivable Trade accounts receivables are recorded at the invoiced amount and do not bear interest. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in the Company’s existing accounts receivable. The Company determines the allowance based on historical write-off experience and specific allowances for bankrupt customers. The Company also analyzes the collection history and financial condition of its other customers, considering current industry conditions and determines whether an allowance needs to be established. The Company reviews its allowance for doubtful accounts monthly. Past due balances over 90 days based on payment terms are reviewed individually for collectability. Allowance for doubtful accounts was $16.7 million and $17.1 million at December 31, 2025 and 2024, respectively. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. The Company does not have any off-balance-sheet credit exposure related to its customers.
Allowance for Credit Losses	Allowance for Credit Losses The allowance for credit losses (ACL) is management's estimate of the current expected credit losses at the balance sheet date. Our credit exposure includes an unfunded loan commitment. For this exposure, we recognized an ACL associated with the unfunded amount, which is reported as a liability in accrued expenses and other current liabilities on our Consolidated Balance Sheets.
Legal Contingencies	Legal Contingencies The Company is party to a number of lawsuits arising in the normal course of our business. The Company and certain of the Company's subsidiaries are among numerous defendants in a number of cases seeking damages for alleged exposure to asbestos-contaminated talc products sold by the Company's subsidiary BMI Oldco Inc. The Company records accruals for loss contingencies associated with legal matters, including talc-related litigation and the Chapter 11 Cases, when it is probable that a liability will be incurred and the amount of the loss can be reasonably estimated. See Note 17 to the Consolidated Financial Statements included in this report for more information.
Inventories	Inventories We carry inventories consisting of finished goods, work-in-process, raw materials, and supplies. Inventories are stated at the lower of cost or net realizable value and are presented net of applicable reserves on our Consolidated Balance Sheets. Cost is determined by using the first-in, first-out (FIFO) method. We regularly review our inventories for impairment and reserves are established when necessary.
Property, Plant, and Equipment	Property, Plant, and Equipment Property, plant, and equipment are recorded at cost. Significant improvements are capitalized, while maintenance and repair expenditures are charged to operations as incurred. The Company capitalizes interest cost as a component of construction in progress. The straight-line method of depreciation is used for substantially all the assets for financial reporting purposes, except for mining related equipment - which uses the units-of-production method. The annual rates of depreciation are 3% - 6.67% for buildings, 6.67% - 12.5% for machinery and equipment, 8% - 12.5% for furniture and fixtures, and 12.5% - 25% for computer equipment and software-related assets. The estimated useful lives of our PCC production facilities and machinery and equipment pertaining to our natural stone mining and processing plants and our chemical plants are 15 years. Property, plant, and equipment are depreciated over their useful lives. Useful lives are based on management’s estimates of the period that the assets can generate revenue, which does not necessarily coincide with the remaining term of a customer’s contractual obligation to purchase products made using those assets. The Company’s sales of PCC are predominantly pursuant to long-term evergreen contracts, initially ten to fifteen years in length, with paper mills at which the Company operates satellite PCC plants. The terms of many of these agreements have been extended, often in connection with an expansion of the satellite PCC plant. Failure of a PCC customer to renew an agreement or continue to purchase PCC from a Company facility could result in an impairment of assets charge or accelerated depreciation at such facility. Depletion of mineral reserves is determined on a unit-of-extraction basis for financial reporting purposes, based upon proven and probable reserves, and generally on a percentage depletion basis for tax purposes.
Stripping Costs Incurred During Production	Stripping Costs Incurred During Production Stripping costs are those costs incurred for the removal of waste materials for the purpose of accessing ore body that will be produced commercially. Stripping costs incurred during the production phase of a mine are variable costs that are included in the costs of inventory produced during the period that the stripping costs are incurred.
Accounting for the Impairment of Long-Lived Assets	Accounting for the Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, the Company estimates the undiscounted future cash flows (excluding interest), resulting from the use of the asset and its ultimate disposition. If the sum of the undiscounted cash flows (excluding interest) is less than the carrying value, the Company recognizes an impairment loss, measured as the amount by which the carrying value exceeds the fair value of the asset, determined principally using discounted cash flows.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess of purchase price and related costs over the value assigned to the net tangible and identifiable intangible assets of businesses acquired. Goodwill is not amortized but instead assessed for impairment. Intangible assets with estimable useful lives are amortized on a straight-line basis over their respective estimated lives to the estimated residual values and reviewed for impairment. The Company performs a qualitative assessment for each of its reporting units to determine if the two-step process for impairment testing is required. If the Company determines that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company would then evaluate the recoverability of goodwill using a two-step impairment test approach at the reporting unit level. In the first step, the fair value for the reporting unit is compared to its book value including goodwill. In the case that the fair value of the reporting unit is less than book value, a second step is performed which compares the fair value of the reporting unit’s goodwill to the book value of the goodwill. The fair value for the goodwill is determined based on the difference between the fair values of the reporting unit and the net fair values of the identifiable assets and liabilities of such reporting unit. If the fair value of the goodwill is less than the book value, the difference is recognized as impairment. In addition to the assessment of goodwill impairment, the Company also reviews its other identifiable intangibles for impairment. Each year, the Company reviews whether events or changes in circumstances could indicate that a long-lived asset’s carrying amount may not be recoverable. Should such events occur, the value of intangibles not recoverable would be recognized as impairment.
Investment in Joint Ventures	Investment in Joint Ventures The Company uses the equity method of accounting to record the results of its investments in companies in which it has significant influence but does not control, and cost method of accounting in companies in which it cannot exercise significant control. The Company records the equity in earnings of its investments in joint ventures on a one-month lag. At December 31, 2025 and 2024, the book value of the Company’s equity method investments was $24.7 million and $23.4 million, respectively.
Accounting for Asset Retirement Obligations	Accounting for Asset Retirement Obligations The Company provides for obligations associated with the retirement of long-lived assets and the associated asset retirement costs. The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. The associated asset retirement costs are capitalized as part of the carrying amount of the long-lived asset. The Company also provides for legal obligations to perform asset retirement activities where timing or methods of settlement are conditional on future events. The Company also records liabilities related to land reclamation as a part of the asset retirement obligations. The Company mines land for various minerals using a surface-mining process that requires the removal of overburden. In many instances, the Company is obligated to restore the land upon completion of the mining activity. As the overburden is removed, the Company recognizes this liability for land reclamation based on the estimated fair value of the obligation. The obligation is adjusted to reflect the passage of time and changes in estimated future cash outflows.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The recorded amounts of cash and cash equivalents, receivables, short-term borrowings, accounts payable, accrued interest, and variable-rate long-term debt approximate fair value because of the short maturity of those instruments or the variable nature of underlying interest rates. Short-term investments are recorded at cost, which approximates fair market value.
Derivative Financial Instruments	Derivative Financial Instruments The Company records derivative financial instruments which are used to hedge certain foreign exchange risk at fair value on the balance sheet. See Note 12 for a full description of the Company’s hedging activities and related accounting policies.
Revenue Recognition	Revenue Recognition Revenue is recognized at the point in time when the customer obtains control of the promised goods or services in an amount that reflects the consideration we expect to receive in exchange for those goods or services. The Company’s revenues are primarily derived from the sale of products. Our primary performance obligation is satisfied upon shipment or delivery to our customer based on written sales terms, which is also when control is transferred. Revenues from sales of equipment are recorded upon completion of installation and transfer of control to the customer. Revenue where our performance obligations are satisfied in phases is recognized over time using certain input measures based on the measurement of the value transferred to the customer, including milestones achieved. Revenues from services are recorded when the services are performed. In most of our PCC contracts, the price per ton is based upon the total number of tons sold to the customer during the year. Under those contracts, the price billed to the customer for shipments during the year is based on periodic estimates of the total annual volume that will be sold to the customer. Revenues are adjusted at the end of each year to reflect the actual volume sold. There were no significant revenue adjustments in the fourth quarter of 2025 and 2024, respectively. We have consignment arrangements with certain customers in our Engineered Solutions segment. Revenues for these transactions are recorded when the consigned products are consumed by the customer.
Foreign Currency	Foreign Currency The assets and liabilities of the Company’s international subsidiaries are translated into U.S. dollars using exchange rates at the respective balance sheet date. The resulting translation adjustments are recorded in accumulated other comprehensive income (loss) in shareholders’ equity. Income statement items are generally translated at monthly average exchange rates prevailing during the period. International subsidiaries operating in highly inflationary economies translate non-monetary assets at historical rates, while net monetary assets are translated at current rates, with the resulting translation adjustments included in net income. At December 31, 2025, the Company had no international subsidiaries operating in highly inflationary economies, with the exception of its subsidiaries in Turkey.
Income Taxes	Income Taxes Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company operates in multiple taxing jurisdictions, both within the U.S. and outside the U.S. In certain situations, a taxing authority may challenge positions that the Company has adopted in its income tax filings. The Company regularly assesses its tax position for such transactions and includes reserves for those differences in position. The reserves are utilized or reversed once the statute of limitations has expired or the matter is otherwise resolved. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, we are required to make many subjective assumptions and judgments regarding our income tax exposures. Interpretations of and guidance surrounding income tax laws and regulations change over time. As such, changes in our subjective assumptions and judgments can materially affect amounts recognized in the consolidated balance sheets and statements of operations. The Company’s accounting policy is to recognize interest and penalties as part of its provision for income taxes. See Note 8 for additional details on our uncertain tax positions. The accompanying consolidated financial statements do not include a provision for foreign withholding taxes on international subsidiaries’ unremitted earnings, which are expected to be permanently reinvested overseas.
Research and Development	Research and Development Research and development costs are expensed as incurred.
Accounting for Stock-Based Compensation	Accounting for Stock-Based Compensation The Company recognizes compensation expense for share-based awards based upon the grant date fair value over the vesting period.
Pension and Postretirement Benefits	Pension and Postretirement Benefits The Company has defined benefit pension plans covering the majority of its eligible employees. The benefits are generally based on years of service and an employee’s modified career earnings. The Company also provides postretirement healthcare benefits for the majority of its retirees and employees in the United States. The Company measures the costs of its obligation based on its best estimate. The net periodic costs are recognized as employees render the services necessary to earn the postretirement benefits.
Environmental	Environmental Expenditures that relate to current operations are expensed or capitalized as appropriate. Expenditures that relate to an existing condition caused by past operations and which do not contribute to current or future revenue generation are expensed. Liabilities are recorded when it is probable the Company will be obligated to pay amounts for environmental site evaluation, remediation, or related costs, and such amounts can be reasonably estimated.
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic earnings (loss) per share have been computed based upon the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share have been computed based upon the weighted average number of common shares outstanding during the period, assuming the issuance of common shares for all potentially dilutive common shares outstanding.
Reclassifications	Reclassifications Certain reclassifications have been made to the prior period financial information to conform to the presentation used in the consolidated financial statements for the year ended December 31, 2024.
Subsequent Events	Subsequent Events The Company has evaluated for subsequent events through the date of issuance of its consolidated financial statements.
Recently Issued Accounting Standards	Recently Issued Accounting Standards Changes to accounting principles generally accepted in the United States of America (U.S. GAAP) are established by the Financial Accounting Standards Board (FASB) in the form of accounting standards updates (ASUs) to the FASB’s Accounting Standards Codification. The Company considers the applicability and impact of all ASUs. ASUs not listed below were assessed and determined to be either not applicable or are expected to have minimal impact on our consolidated financial position and results of operations. Adoption of Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” that requires entities to disclose additional information about federal, state, and foreign income taxes primarily related to the income tax rate reconciliation and income taxes paid. The new standard also eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. The new standard is effective for interim and annual periods beginning on or after December 15, 2024. The Company adopted this guidance on January 1, 2025, on a prospective basis and updated the disclosures contained in Note 8. This guidance did not impact the Company’s Consolidated Financial Statements but resulted in the disaggregation of the Company's tax footnote disclosures. Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses,” that requires entities to disclose additional information in the notes to the financial statements about prescribed categories underlying any relevant income statement expense caption. The new standard is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. The adoption of this standard is not expected to have a material impact on the Company’s Consolidated Financial Statements but will result in disaggregation of the Company's income statement expenses.

Inventories (Tables)

12 Months Ended

Dec. 31, 2025

Inventories [Abstract]

Inventories by Major Category

The following is a summary of inventories by major category:


	December 31,
(in millions of dollars)		2025		2024
Raw materials	$	160.6	$	167.7
Work-in-process		13.3		12.3
Finished goods		117.3		106.7
Packaging and supplies		59.0		55.4
Total inventories	$	350.2	$	342.1

Benefit Plans - Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits [Member]
Benefit Plans [Abstract]
Service cost	$ 3.8	$ 4.2	$ 4.5
Interest cost	16.5	16.0	16.0
Expected return on plan assets	(21.9)	(19.8)	(17.8)
Recognized net actuarial (gain) loss	1.1	1.5	2.9
Settlement/curtailment (gain) loss	(0.1)	0.0	0.1
Net periodic (benefit) cost	(0.6)	1.9	5.7
Postretirement Benefits [Member]
Benefit Plans [Abstract]
Service cost	0.0	0.0	0.0
Interest cost	0.1	0.1	0.1
Expected return on plan assets	0.0	0.0	0.0
Recognized net actuarial (gain) loss	(0.4)	(0.4)	(0.5)
Settlement/curtailment (gain) loss	0.0	0.0	0.0
Net periodic (benefit) cost	$ (0.3)	$ (0.3)	$ (0.4)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Long-Term Debt and Commitments - Long-Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Long-Term Debt and Commitments [Abstract]
Long-term debt	$ 961.3	$ 966.1
Less: Current maturities	6.3	6.5
Total long-term debt	$ 955.0	959.6
Term Loan due 2031 [Member]
Long-Term Debt and Commitments [Abstract]
Maturity date	Nov. 26, 2031
Unamortized deferred financing costs	$ 6.5	7.3
Long-term debt	$ 562.7	567.7
Senior Notes due 2028 [Member]
Long-Term Debt and Commitments [Abstract]
Maturity date	Jun. 30, 2028
Unamortized deferred financing costs	$ 2.3	3.2
Long-term debt	$ 397.7	$ 396.8
Interest rate	5.00%	5.00%
Other Debt [Member]
Long-Term Debt and Commitments [Abstract]
Long-term debt	$ 0.9	$ 1.6

Benefit Plans - Pension Plan Fair Value by Asset Category (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Benefit Plans [Abstract]
Fair value of plan assets	$ 369.9	$ 341.3
U.S. Plans [Member]
Benefit Plans [Abstract]
Fair value of plan assets	297.9	277.1	$ 251.4
International Plans [Member]
Benefit Plans [Abstract]
Fair value of plan assets	72.0	64.2	$ 66.0
Equity Securities [Member]
Benefit Plans [Abstract]
Fair value of plan assets	207.3	188.7
Fixed Income Securities [Member]
Benefit Plans [Abstract]
Fair value of plan assets	116.8	112.8
Real Estate [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.3	0.3
Other [Member]
Benefit Plans [Abstract]
Fair value of plan assets	$ 45.5	$ 39.5

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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+ Details

Segment and Related Information - Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment and Related Information [Abstract]
Net sales	$ 2,072.6	$ 2,118.5	$ 2,169.9
Cost of goods sold	1,554.6	1,570.8	1,662.8
Production margin	518.0	547.7	507.1
Marketing and administrative expenses	208.0	209.2	206.0
Research and development expenses	22.9	23.0	21.2
Impairment of assets	4.7	0.0	71.7
Gain on sale of assets, net	(9.9)	(12.3)	0.0
Income from operations	47.4	286.5	171.8
Depreciation, depletion and amortization	91.2	94.9	95.0
Assets	3,469.0	3,393.9	3,346.6
Capital expenditures	107.1	89.5	93.5
Operating Segments [Member]
Segment and Related Information [Abstract]
Net sales	2,072.6	2,118.5	2,169.9
Cost of goods sold	1,554.6	1,570.8	1,662.8
Production margin	518.0	547.7	507.1
Marketing and administrative expenses	198.5	197.5	193.9
Research and development expenses	22.9	23.0	21.2
Restructuring and other items	12.6		4.1
Impairment of assets			71.7
Litigation expenses			26.8
Gain on sale of assets, net	(9.9)	(12.3)
Income from operations	293.9	339.5	189.4
Corporate [Member]
Segment and Related Information [Abstract]
Assets	91.7	76.5	73.3
Capital expenditures	4.6	5.0	5.5
Consumer & Specialties [Member]
Segment and Related Information [Abstract]
Net sales	1,097.7	1,140.2	1,160.2
Consumer & Specialties [Member] \| Operating Segments [Member]
Segment and Related Information [Abstract]
Net sales	1,097.7	1,140.2	1,160.2
Cost of goods sold	875.3	890.4	938.5
Production margin	222.4	249.8	221.7
Marketing and administrative expenses	75.7	71.7	69.2
Research and development expenses	13.1	12.6	11.5
Restructuring and other items	9.6	0.0	0.9
Impairment of assets	3.0	0.0	71.7
Litigation expenses			26.8
Gain on sale of assets, net	0.0	0.0
Income from operations	124.0	165.5	41.6
Depreciation, depletion and amortization	43.4	47.2	47.3
Assets	1,333.4	1,289.4	1,244.8
Capital expenditures	67.6	45.2	56.8
Engineered Solutions [Member]
Segment and Related Information [Abstract]
Net sales	974.9	978.3	1,009.7
Engineered Solutions [Member] \| Operating Segments [Member]
Segment and Related Information [Abstract]
Net sales	974.9	978.3	1,009.7
Cost of goods sold	679.3	680.4	724.3
Production margin	295.6	297.9	285.4
Marketing and administrative expenses	122.8	125.8	124.7
Research and development expenses	9.8	10.4	9.7
Restructuring and other items	3.0	0.0	3.2
Impairment of assets	1.7	0.0	0.0
Litigation expenses			0.0
Gain on sale of assets, net	(9.9)	(12.3)
Income from operations	169.9	174.0	147.8
Depreciation, depletion and amortization	47.8	47.7	47.7
Assets	2,043.9	2,028.0	2,028.5
Capital expenditures	$ 34.9	$ 39.3	$ 31.2

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]	Risk Management and Strategy The Company has processes, policies, and procedures for identifying, assessing, managing, and responding to cybersecurity threats and incidents. These are integrated into our overall risk management systems, as overseen by our Board of Directors, primarily through the Audit Committee. Our policies and procedures include protocols for assessing potential material impact from cybersecurity threats and incidents, escalating to executive leadership and the Board of Directors, engaging external stakeholders, and reporting incidents based on applicable legal requirements. Our incident response plan provides guidance in the event of a cybersecurity incident, including processes with assigned roles and responsibilities to triage, contain, assess severity, escalate, investigate, and remediate incidents, as well as to comply with potentially applicable legal obligations and mitigate reputational damage. We use cybersecurity technologies, products, specialized IT tools, and services including cyber threat intelligence and external cyber technology experts to understand, manage, mitigate, and continually remediate identified risks. A cybersecurity incident may be detected in a number of ways, including through the following avenues: Security Operations Center (SOC) events, employee reports such as helpdesk incidents, and cybersecurity tool and service stacks (e.g., vulnerability detection, threat intelligence, anti-virus, and malware detection tools). All cybersecurity risks are logged into the Company’s cybersecurity risk register where they are tracked for remediation. These cybersecurity risks are discussed with management for resolution planning and escalation. We leverage recognized cybersecurity frameworks to drive strategic direction and maturity improvement and engage third party security experts for risk assessments, risk mitigation actions, vulnerability identification, and program enhancements. We periodically test our security controls through internal and external penetration testing that covers both corporate and plant IT networks by external specialized vendors, as well as in connection with auditing of our financial systems. We also conduct regular cybersecurity tabletop exercises to test established policies and procedures for responding to cybersecurity threats and incidents. In addition, we conduct an annual independent review of our cybersecurity posture. Throughout the year, we conduct cybersecurity training and awareness for our employees to help identify, avoid, and mitigate cybersecurity threats utilizing various delivery methods such as phishing campaigns, training sessions, and informational bulletins. We conduct risk assessments of third-party suppliers and service providers including due diligence assessments of third-party suppliers and service providers that have access to the Company’s networks, confidential information, and information systems. We provide all third-party vendors, consultants, and partners with detailed security requirements for securing their connections into our IT networks. Third-party service providers are also typically contractually responsible for identifying and remediating security issues within their technology and service environment. Management has not identified risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, that have materially affected or are reasonably likely to materially affect the Company, including its business strategy, results of operations, or financial condition. For more information, see “Item 1A. Risk Factors, Our operations have been and will continue to be subject to cyberattacks and other disruptions to our information systems that could have a material adverse impact on our business, consolidated results of operations, and consolidated financial condition”.
Cybersecurity Risk Management Processes Integrated [Text Block]	The Company has processes, policies, and procedures for identifying, assessing, managing, and responding to cybersecurity threats and incidents. These are integrated into our overall risk management systems, as overseen by our Board of Directors, primarily through the Audit Committee. Our policies and procedures include protocols for assessing potential material impact from cybersecurity threats and incidents, escalating to executive leadership and the Board of Directors, engaging external stakeholders, and reporting incidents based on applicable legal requirements. Our incident response plan provides guidance in the event of a cybersecurity incident, including processes with assigned roles and responsibilities to triage, contain, assess severity, escalate, investigate, and remediate incidents, as well as to comply with potentially applicable legal obligations and mitigate reputational damage.
Cybersecurity Risk Management Processes Integrated [Flag]	true
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 Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]	Management has not identified risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, that have materially affected or are reasonably likely to materially affect the Company, including its business strategy, results of operations, or financial condition. For more information, see “Item 1A. Risk Factors, Our operations have been and will continue to be subject to cyberattacks and other disruptions to our information systems that could have a material adverse impact on our business, consolidated results of operations, and consolidated financial condition”.
Cybersecurity Risk Board of Directors Oversight [Text Block]	Governance The Board of Directors is responsible for overseeing the assessment and management of enterprise-level risks that may impact the Company. The Audit Committee has primary responsibility for overseeing risk management, including oversight of risks from cybersecurity threats. Management reports on cybersecurity matters, including material risks and threats, to the Audit Committee at regularly scheduled Audit Committee meetings, which are then discussed with the Board of Directors. The reports discuss specific risks and mitigation efforts, including critical and high cyber risks from the risk register, the results of our annual independent review of the Company’s cybersecurity posture, and other third-party assessments and benchmarking information. It is management’s responsibility to manage cybersecurity risks, as described above, and bring to the Board’s attention material risks. Under the oversight of the Audit Committee, and as directed by the Company’s Chief Executive Officer, the Company’s Chief Information Officer (CIO) is primarily responsible for the assessment and management of cybersecurity risks. The CIO, who reports to the Chief Financial Officer, is aided by a third-party Chief Information Security Officer with over 40 years of experience, in addition to other external professionals. Management’s risk oversight is also accomplished through the Company’s Strategic Risk Management Committee and Operating Risk Management Committee, which provide cross-functional support for cybersecurity risk management, as well as the Company’s Chief Compliance Officer.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board of Directors is responsible for overseeing the assessment and management of enterprise-level risks that may impact the Company. The Audit Committee has primary responsibility for overseeing risk management, including oversight of risks from cybersecurity threats. Management reports on cybersecurity matters, including material risks and threats, to the Audit Committee at regularly scheduled Audit Committee meetings, which are then discussed with the Board of Directors. The reports discuss specific risks and mitigation efforts, including critical and high cyber risks from the risk register, the results of our annual independent review of the Company’s cybersecurity posture, and other third-party assessments and benchmarking information.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board of Directors is responsible for overseeing the assessment and management of enterprise-level risks that may impact the Company. The Audit Committee has primary responsibility for overseeing risk management, including oversight of risks from cybersecurity threats. Management reports on cybersecurity matters, including material risks and threats, to the Audit Committee at regularly scheduled Audit Committee meetings, which are then discussed with the Board of Directors. The reports discuss specific risks and mitigation efforts, including critical and high cyber risks from the risk register, the results of our annual independent review of the Company’s cybersecurity posture, and other third-party assessments and benchmarking information.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Board of Directors is responsible for overseeing the assessment and management of enterprise-level risks that may impact the Company. The Audit Committee has primary responsibility for overseeing risk management, including oversight of risks from cybersecurity threats. Management reports on cybersecurity matters, including material risks and threats, to the Audit Committee at regularly scheduled Audit Committee meetings, which are then discussed with the Board of Directors. The reports discuss specific risks and mitigation efforts, including critical and high cyber risks from the risk register, the results of our annual independent review of the Company’s cybersecurity posture, and other third-party assessments and benchmarking information.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true
Cybersecurity Risk Role of Management [Text Block]	It is management’s responsibility to manage cybersecurity risks, as described above, and bring to the Board’s attention material risks. Under the oversight of the Audit Committee, and as directed by the Company’s Chief Executive Officer, the Company’s Chief Information Officer (CIO) is primarily responsible for the assessment and management of cybersecurity risks. The CIO, who reports to the Chief Financial Officer, is aided by a third-party Chief Information Security Officer with over 40 years of experience, in addition to other external professionals. Management’s risk oversight is also accomplished through the Company’s Strategic Risk Management Committee and Operating Risk Management Committee, which provide cross-functional support for cybersecurity risk management, as well as the Company’s Chief Compliance Officer.
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	It is management’s responsibility to manage cybersecurity risks, as described above, and bring to the Board’s attention material risks. Under the oversight of the Audit Committee, and as directed by the Company’s Chief Executive Officer, the Company’s Chief Information Officer (CIO) is primarily responsible for the assessment and management of cybersecurity risks. The CIO, who reports to the Chief Financial Officer, is aided by a third-party Chief Information Security Officer with over 40 years of experience, in addition to other external professionals. Management’s risk oversight is also accomplished through the Company’s Strategic Risk Management Committee and Operating Risk Management Committee, which provide cross-functional support for cybersecurity risk management, as well as the Company’s Chief Compliance Officer.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	It is management’s responsibility to manage cybersecurity risks, as described above, and bring to the Board’s attention material risks. Under the oversight of the Audit Committee, and as directed by the Company’s Chief Executive Officer, the Company’s Chief Information Officer (CIO) is primarily responsible for the assessment and management of cybersecurity risks. The CIO, who reports to the Chief Financial Officer, is aided by a third-party Chief Information Security Officer with over 40 years of experience, in addition to other external professionals. Management’s risk oversight is also accomplished through the Company’s Strategic Risk Management Committee and Operating Risk Management Committee, which provide cross-functional support for cybersecurity risk management, as well as the Company’s Chief Compliance Officer.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Taxes [Abstract]
Balance at beginning of the year	$ 1.9	$ 2.8
Increases related to current year positions	0.5	0.5
Decreases related to audit settlements and statute expirations	(0.6)	(1.4)
Balance at the end of the year	$ 1.8	$ 1.9

Leases - Weighted Average Remaining Lease Term and Discount Rates (Details)	Dec. 31, 2025
Leases [Abstract]
Weighted-average remaining operating lease term (in years)	4 years 10 months 17 days
Weighted-average operating leases discount rate	6.10%

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract]
Net income (loss)	$ (14.0)	$ 170.9	$ 88.3
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion, and amortization	91.2	94.9	95.0
Provision for litigation accrual and credit losses	215.0	30.0	0.0
Loss (gain) on disposal of property, plant, and equipment	3.3	(11.8)	2.0
Deferred income taxes	(45.8)	(7.6)	(34.8)
Pension amortization and settlement loss	0.0	1.1	2.3
Provision for bad debts	4.1	1.4	2.8
Stock-based compensation	11.9	11.8	11.3
Impairment of assets	0.0	0.0	71.7
Reduction of right of use asset	15.7	14.4	14.1
Non-cash debt extinguishment expenses	0.0	1.8	0.0
Restructuring costs	15.0	0.0	6.9
Other non-cash items, net	(4.9)	(6.6)	(4.3)
Changes in operating assets and liabilities
Accounts receivable	(5.2)	5.2	1.8
Inventories	(2.0)	(26.2)	18.7
Pension plan funding	(8.6)	(11.7)	(9.9)
Accounts payable	(2.2)	2.3	(2.9)
Restructuring liabilities	(2.8)	(1.4)	(2.8)
Income taxes payable	(19.2)	5.8	6.7
Prepaid expenses and other	(57.8)	(37.9)	(33.3)
Net cash provided by operating activities	193.7	236.4	233.6
Investing Activities:
Purchases of property, plant, and equipment	(107.1)	(89.5)	(93.5)
Payments related to acquisition of business, net of cash acquired	0.0	(4.0)	(1.8)
Proceeds from sale of assets	6.8	12.3	0.2
Purchases of short-term investments	(14.3)	(8.6)	(17.9)
Proceeds from sale of short-term investments	15.3	8.0	20.0
Other investing activities	(23.5)	(12.7)	1.3
Net cash used in investing activities	(122.8)	(94.5)	(91.7)
Long-term debt issuance	0.0	575.0	0.0
Debt issuance costs	0.0	(6.7)	0.0
Repayment of long-term debt	(6.6)	(533.6)	(14.8)
Repayment of short-term debt	(4.8)	(80.2)	(34.5)
Purchase of common stock for treasury	(58.5)	(63.6)	(14.2)
Proceeds from issuance of stock under option plan	2.4	15.7	5.1
Tax withholding payments for stock-based compensation	(3.5)	(2.8)	(2.8)
Dividends paid to non-controlling interests	(4.1)	(1.0)	(2.4)
Cash dividends paid	(14.2)	(13.2)	(8.1)
Net cash used in financing activities	(89.3)	(110.4)	(71.7)
Effect of exchange rate changes on cash and cash equivalents	14.3	(15.6)	(0.2)
Net increase (decrease) in cash and cash equivalents	(4.1)	15.9	70.0
Cash and cash equivalents at beginning of period	333.1	317.2	247.2
Cash and cash equivalents at end of period	329.0	333.1	317.2
Non-cash investing and financing activities
Property, plant, and equipment additions related to asset retirement obligations	0.0	7.0	0.0
Treasury stock purchases settled after period end	0.1	0.1	0.6
Excise tax charged to equity not paid	$ 0.1	$ 0.4	$ 0.0

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ (18.4)	$ 167.1	$ 84.1

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

Leases (Tables)

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Components of Lease Costs

Operating lease cost was $18.8 million, $17.3 million, and $16.8 million for the years ended December 31, 2025, 2024, and 2023, respectively. The components of lease costs are as follows:


	December 31,
(in millions of dollars)		2025		2024		2023
Operating lease cost	$	18.8	$	17.3	$	16.7
Short-term lease cost		-		-		0.1
Total lease cost	$	18.8	$	17.3	$	16.8

Supplemental Cash Flow Information and Non-cash Activity Related to Operating Leases

Supplemental cash flow information and non-cash activity related to our leases are as follows:


(in millions of dollars)		December 31,
Operating cash flows information:		2025
Cash paid for amounts included in the measurement of lease liabilities	$	20.0
Non-cash activity:
Right-of-use assets obtained in the exchange for operating lease liabilities	$	13.2

Weighted Average Remaining Lease Term and Discount Rates

Weighted average remaining lease term and weighted average discount rates related to the Company’s leases were as follows:


Weighted-average remaining operating lease term (in years)	4.88
Weighted-average operating leases discount rate	6.1	%

Outstanding Lease Assets and Liabilities

The following table summarizes the Company’s outstanding lease assets and liabilities and their classification on the Consolidated Balance Sheets:


			December 31,
(in millions of dollars)	Balance Sheet Classification			2025		2024
Right-of-use asset		Other assets and deferred charges	$	45.2	$	46.9
Lease liability - current		Other current liabilities		16.5		14.5
Lease liability - non-current		Other non-current liabilities		33.8		38.7

Future Minimum Lease Payments

Future minimum lease payments under the Company’s leases as of December 31, 2025, were as follows:


		December 31,
(in millions of dollars)		2025
2026	$	19.0
2027		14.1
2028		10.8
2029		4.9
2030		3.4
Thereafter		6.0
Total undiscounted lease payments		58.2
Less: imputed interest		(7.9	)
Present Value of Lease Liability	$	50.3

Benefit Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Pension Benefits [Member]
Benefit Plans [Abstract]
Net actuarial (gain) loss	$ (7.4)	$ 1.2
Prior service cost	0.1	0.1
Amount recognized end of year	(7.3)	1.3
Postretirement Benefits [Member]
Benefit Plans [Abstract]
Net actuarial (gain) loss	(3.0)	(3.2)
Prior service cost	0.0	0.0
Amount recognized end of year	$ (3.0)	$ (3.2)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Property, Plant, and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant, and Equipment [Abstract]
Asset write-downs	$ 4.7	$ 0.0	$ 71.7
Depreciation and depletion expense	75.2	79.5	$ 79.4
Refractories Manufacturing Assets \| China [Member]
Property, Plant, and Equipment [Abstract]
Gain on sale of assets, net	5.6	$ 12.3
Chromite Mine [Member] \| South Africa [Member]
Property, Plant, and Equipment [Abstract]
Gain on sale of assets, net	$ 4.3

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CONSOLIDATED STATEMENTS OF INCOME (LOSS) [Abstract]
Net sales	$ 2,072.6	$ 2,118.5	$ 2,169.9
Cost of goods sold	1,554.6	1,570.8	1,662.8
Production margin	518.0	547.7	507.1
Marketing and administrative expenses	208.0	209.2	206.0
Research and development expenses	22.9	23.0	21.2
Provision for litigation accrual and credit losses	215.0	30.0	0.0
Restructuring and other items	15.0	0.0	6.9
Impairment of assets	0.0	0.0	71.7
Acquisition-related expenses	0.0	0.0	0.3
Gain on sale of assets, net	(9.9)	(12.3)	0.0
Litigation expenses	19.6	11.3	29.2
Income from operations	47.4	286.5	171.8
Interest expense, net	(54.5)	(56.4)	(59.2)
Debt extinguishment expenses	0.0	(1.8)	0.0
Other non-operating deductions, net	(6.9)	(4.7)	(4.9)
Total non-operating deductions, net	(61.4)	(62.9)	(64.1)
Income (loss) before tax and equity in earnings	(14.0)	223.6	107.7
Provision for taxes on income	4.9	59.4	23.7
Equity in earnings of affiliates, net of tax	4.9	6.7	4.3
Net income (loss)	(14.0)	170.9	88.3
Less: Net income attributable to non-controlling interests	4.4	3.8	4.2
Net income (loss) attributable to Minerals Technologies Inc. (MTI)	$ (18.4)	$ 167.1	$ 84.1
Earnings (loss) per share:
Basic net income (loss) attributable to Minerals Technologies Inc. (in Dollars per share)	$ (0.59)	$ 5.21	$ 2.59
Diluted net income (loss) attributable to Minerals Technologies Inc. (in Dollars per share)	(0.59)	5.17	2.58
Cash dividends declared per common share (in Dollars per share)	$ 0.45	$ 0.41	$ 0.25
Shares used in computation of earnings (loss) per share:
Basic (in Shares)	31.4	32.1	32.5
Diluted (in Shares)	31.4	32.3	32.6

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2025

Schedule II - Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

MINERALS TECHNOLOGIES INC. & SUBSIDIARY COMPANIES

SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS

(in millions of dollars)


			Additions Charged
		Balance at	to Costs, Provisions				Balance at
		Beginning of Period	and Expenses	Deductions (a)			End of Period
Year Ended December 31, 2025
Valuation and qualifying accounts deducted from assets to which they apply:
Allowance for doubtful accounts	$	17.1	4.1	(4.5	)	$	16.7
Year Ended December 31, 2024
Valuation and qualifying accounts deducted from assets to which they apply:
Allowance for doubtful accounts	$	20.3	1.4	(4.6	)	$	17.1
Year Ended December 31, 2023
Valuation and qualifying accounts deducted from assets to which they apply:
Allowance for doubtful accounts	$	15.1	2.8	2.4		$	20.3

(a)

Includes impact of write-offs, translation of foreign currencies and reclassifications for presentation purposes.

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill and Other Intangible Assets [Abstract]
Goodwill	$ 915.9	$ 913.8	$ 913.6
Weighted average amortization period	29 years
Amortization expense	$ 11.4	$ 12.1	$ 12.7
Estimated amortization expense, 2026	11.5
Estimated amortization expense, 2027	11.5
Estimated amortization expense, 2028	11.5
Estimated amortization expense, 2029	11.5
Estimated amortization expense, 2030	11.5
Estimated amortization expense, thereafter	$ 151.2

Inventories

12 Months Ended

Dec. 31, 2025

Inventories [Abstract]

Inventories

Note 9. Inventories

The following is a summary of inventories by major category:


	December 31,
(in millions of dollars)		2025		2024
Raw materials	$	160.6	$	167.7
Work-in-process		13.3		12.3
Finished goods		117.3		106.7
Packaging and supplies		59.0		55.4
Total inventories	$	350.2	$	342.1

Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jan. 31, 2026
Stockholders’ Equity [Abstract]
Common stock, shares authorized (in Shares)	100,000,000	100,000,000
Common stock, par value (in Dollars per share)	$ 0.1	$ 0.1
Common stock, shares outstanding (in Shares)	31,034,106	31,895,655
Preferred stock, shares authorized (in Shares)	1,000,000	1,000,000
Preferred stock, shares issued (in Shares)	0	0
Preferred stock, shares outstanding (in Shares)	0	0
Cash dividends paid (in Dollars)	$ 14.2	$ 13.2	$ 8.1
Cash dividends paid (in Dollars per share)	$ 0.45	$ 0.41	$ 0.25
Increase in shares available for issuance (in Shares)	0	889,000	0
Stock Options [Member]
Stockholders’ Equity [Abstract]
Term of stock options granted under Plan	10 years
Vesting period	3 years
Subsequent Event [Member] \| Q1-2026 Quarterly Dividend [Member]
Stockholders’ Equity [Abstract]
Cash dividend declared (in Dollars)				$ 3.7
Cash dividend declared (in Dollars per share)				$ 0.12

Stock-Based Compensation - Non-vested Stock Option Activity (Details) - Nonvested Stock Options [Member]	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Stock-Based Compensation [Abstract]
Balance, beginning of year (in Shares) \| shares	428,230
Weighted average exercise price per share, beginning of year (in Dollars per share) \| $ / shares	$ 66.96
Awards granted \| shares	174,874
Weighted average exercise price per share, granted \| $ / shares	$ 76.75
Awards vested \| shares	(208,327)
Weighted average exercise price per share, vested \| $ / shares	$ 67.46
Awards canceled \| shares	(28,015)
Weighted average exercise price per share, canceled \| $ / shares	$ 70.06
Balance, end of year (in Shares) \| shares	366,762
Weighted average exercise price per share, end of year (in Dollars per share) \| $ / shares	$ 71.16

Contingencies (Tables)

12 Months Ended

Dec. 31, 2025

Contingencies [Abstract]

Case Activity Related to Talc Products Previously Sold by Oldco

As of December 31, 2025, we had 914 open cases related to certain talc products previously sold by Oldco, which is an increase in volume from previous years. The following table details case activity related to talc products previously sold by Oldco:


	Three Months Ended			Twelve Months Ended
		Dec. 31,	Dec. 31,		Dec. 31,	Dec. 31,
(number of claims)		2025	2024		2025	2024
Claims pending, beginning of period		840	663		684	574
Claims filed		135	44		346	162
Less: Claims dismissed, settled, or otherwise resolved		61	23		116	52
Claims pending, end of period		914	684		914	684

Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2025

Benefit Plans [Abstract]

Pension Obligation and Funded Status

The following table sets forth the Company’s pension obligation and funded status at December 31:


	Pension Benefits						Postretirement Benefits
(in millions of dollars)		2025			2024			2025			2024
Change in benefit obligations:
Beginning projected benefit obligation	$	342.3		$	368.9		$	1.8		$	2.0
Service cost		3.8			4.2			-			-
Interest cost		16.5			16.0			0.1			0.1
Actuarial (gain)/loss		4.5			(25.4	)		(0.1	)		(0.1	)
Benefits paid		(23.0	)		(18.7	)		(0.1	)		(0.1	)
Foreign exchange impact		5.3			(3.1	)		0.1			(0.1	)
Other		(0.1	)		0.4			-			-
Ending projected benefit obligation		349.3			342.3			1.8			1.8

Change in plan assets:
Beginning fair value		341.3			317.4			-			-
Actual return on plan assets		38.0			33.5			-			-
Employer contributions		8.5			11.6			0.1			0.1
Plan participants' contributions		0.4			0.4			-			-
Benefits paid		(23.4	)		(18.7	)		(0.1	)		(0.1	)
Foreign exchange impact		5.1			(2.9	)		-			-
Ending fair value		369.9			341.3			-			-

Funded status	$	20.6		$	(1.0	)	$	(1.8	)	$	(1.8	)

Projected Benefit Obligation

The following table presents our domestic and foreign ending projected benefit obligation information at December 31, 2025, 2024 and 2023:

	U.S. Plans						International Plans
(in millions of dollars)		2025		2024		2023		2025		2024		2023
Ending projected benefit obligation	$	279.5	$	275.2	$	293.4	$	71.6	$	68.9	$	77.5

Amounts Recognized in Consolidated Balance Sheets

Amounts recognized in the Consolidated Balance Sheets consist of:


	Pension Benefits						Postretirement Benefits
(in millions of dollars)		2025			2024			2025			2024
Non-current asset	$	40.1		$	19.5		$	-		$	-
Current liability		(1.7	)		(1.6	)		(0.1	)		(0.1	)
Non-current liability		(17.8	)		(18.9	)		(1.7	)		(1.7	)
Net asset (liability) recognized	$	20.6		$	(1.0	)	$	(1.8	)	$	(1.8	)

Amounts Recognized in Accumulated Other Comprehensive Loss

Amounts recognized in accumulated other comprehensive loss, net of related tax effects, consist of:


	Pension Benefits					Postretirement Benefits
(in millions of dollars)		2025			2024		2025			2024
Net actuarial (gain) loss	$	(7.4	)	$	1.2	$	(3.0	)	$	(3.2	)
Prior service cost		0.1			0.1		-			-
Amount recognized end of year	$	(7.3	)	$	1.3	$	(3.0	)	$	(3.2	)

Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income

Changes in the Plan assets and benefit obligations recognized in other comprehensive income:


	Pension Benefits				Postretirement Benefits
(in millions of dollars)		2025		2024		2025			2024
Current year actuarial gain	$	7.8	$	29.7	$	0.1		$	0.1
Amortization of actuarial (gain) loss		0.8		1.1		(0.3	)		(0.3	)
Total recognized in other comprehensive income	$	8.6	$	30.8	$	(0.2	)	$	(0.2	)

Net Periodic Benefit Costs

The components of net periodic benefit costs are as follows:


	Pension Benefits									Postretirement Benefits
(in millions of dollars)		2025			2024			2023			2025			2024			2023
Service cost	$	3.8		$	4.2		$	4.5		$	-		$	-		$	-
Interest cost		16.5			16.0			16.0			0.1			0.1			0.1
Expected return on plan assets		(21.9	)		(19.8	)		(17.8	)		-			-			-
Recognized net actuarial (gain) loss		1.1			1.5			2.9			(0.4	)		(0.4	)		(0.5	)
Settlement/curtailment (gain) loss		(0.1	)		-			0.1			-			-			-
Net periodic (benefit) cost	$	(0.6	)	$	1.9		$	5.7		$	(0.3	)	$	(0.3	)	$	(0.4	)

Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost and Benefit Obligations

The weighted average assumptions used to determine net periodic benefit cost in the accounting for the pension benefit plans and other benefit plans for the years ended December 31, 2025, 2024, and 2023 are as follows:


	Year Ended December 31,
		2025		2024		2023
Discount rate		5.27	%	5.16	%	4.84	%
Expected return on plan assets		6.64	%	6.59	%	6.53	%
Rate of compensation increase		2.75	%	2.75	%	2.77	%
Interest crediting rate		3.75	%	3.75	%	2.25	%

The weighted average assumptions used to determine benefit obligations for the pension benefit plans and other benefit plans at December 31, 2025, 2024, and 2023 are as follows:


	Year Ended December 31,
		2025		2024		2023
Discount rate		5.20	%	4.75	%	4.63	%
Rate of compensation increase		2.75	%	2.75	%	2.76	%

Weighted Average Asset Allocation Percentages

The Company’s pension plan weighted average asset allocation percentages at December 31, 2025 and 2024 by asset category are as follows:

	December 31,
Asset Category		2025		2024
Equity securities		56.0	%	55.3	%
Fixed income securities		31.6	%	33.1	%
Real estate		0.1	%	0.1	%
Other		12.3	%	11.5	%
Total		100.0	%	100.0	%

Pension Plan Fair Value by Asset Category

The Company’s pension plan fair values at December 31, 2025 and 2024 by asset category are as follows:


(in millions of dollars)	December 31,
Asset Category		2025		2024
Equity securities	$	207.3	$	188.7
Fixed income securities		116.8		112.8
Real estate		0.3		0.3
Other		45.5		39.5
Total	$	369.9	$	341.3

The following table presents domestic and foreign pension plan assets information at December 31, 2025, 2024 and 2023 (the measurement date of pension plan assets):


	U.S. Plans						International Plans
(in millions of dollars)		2025		2024		2023		2025		2024		2023
Fair value of plan assets	$	297.9	$	277.1	$	251.4	$	72.0	$	64.2	$	66.0

Defined Benefit Pension Plan Assets Measured at Fair Value

The following table summarizes our defined benefit pension plan assets measured at fair value as of December 31, 2025:


		Quoted Prices in
		Active Markets for		Significant Other		Significant
(in millions of dollars)		Identical Assets		Observable Inputs		Unobservable Inputs
Pension Assets Fair Value as of December 31, 2025		(Level 1)		(Level 2)		(Level 3)		Total
Equity securities
U.S. equities	$	184.8	$	-	$	-	$	184.8
Non-U.S. equities		22.5		-		-		22.5

Fixed income securities
Corporate debt instruments		99.3		17.5		-		116.8

Real estate and other
Real estate		-		-		0.3		0.3
Other		0.4		-		5.4		5.8
Total		307.0		17.5		5.7		330.2
Pension plan assets at NAV		-		-		-		39.7
Total pension plan assets	$	307.0	$	17.5	$	5.7	$	369.9

The following table summarizes our defined benefit pension plan assets measured at fair value as of December 31, 2024:

		Quoted Prices in
		Active Markets for		Significant Other		Significant
(in millions of dollars)		Identical Assets		Observable Inputs		Unobservable Inputs
Pension Assets Fair Value as of December 31, 2024		(Level 1)		(Level 2)		(Level 3)		Total
Equity securities
U.S. equities	$	167.2	$	-	$	-	$	167.2
Non-U.S. equities		21.5		-		-		21.5

Fixed income securities
Corporate debt instruments		98.9		13.9		-		112.8

Real estate and other
Real estate		-		-		0.3		0.3
Other		0.4		-		5.2		5.6
Total		288.0		13.9		5.5		307.4
Pension plan assets at NAV		-		-		-		33.9
Total pension plan assets	$	288.0	$	13.9	$	5.5	$	341.3

Reconciliation of Changes in Fair Value Measurement of Plan Assets Using Significant Unobservable Inputs

The following is a reconciliation of changes in fair value measurement of plan assets using significant unobservable inputs (Level 3):


(in millions of dollars)
Beginning balance at December 31, 2023	$	7.1
Purchases, sales, settlements		-
Actual (loss) return on plan assets still held at reporting date		(1.6	)
Foreign exchange impact		-
Ending balance at December 31, 2024	$	5.5
Purchases, sales, settlements		-
Actual return on plan assets still held at reporting date		0.1
Foreign exchange impact		0.1
Ending balance at December 31, 2025	$	5.7

Estimated Future Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:


		Pension		Other
(in millions of dollars)		Benefits		Benefits
2026	$	25.5	$	0.1
2027	$	26.8	$	0.2
2028	$	26.7	$	0.2
2029	$	25.4	$	0.2
2030	$	25.7	$	0.2
2031-2035	$	124.7	$	0.7

Contingencies (Details) $ in Millions	3 Months Ended			12 Months Ended
Contingencies (Details) $ in Millions	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2025 USD ($) Claim	Dec. 31, 2024 USD ($) Claim	Dec. 31, 2023 USD ($) Claim	Sep. 28, 2025 Claim	Sep. 29, 2024 Claim
Contingencies [Abstract]
Provision for DIP Agreement	$ 30.0		$ 30.0
Provision for litigation accrual and credit losses		$ 215.0		$ 215.0	$ 30.0	$ 0.0
Talc-Related Claims [Member]
Contingencies [Abstract]
Claims pending (in Claim) \| Claim				914	684	574	840	663

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

+ Details

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 329.0	$ 333.1
Short-term investments, at cost which approximates market	3.6	4.0
Accounts receivable	400.1	385.2
Inventories	350.2	342.1
Prepaid expenses	69.6	61.1
Other current assets	3.1	5.5
Total current assets	1,155.6	1,131.0
Property, plant, and equipment, less accumulated depreciation, and depletion	1,025.0	989.7
Goodwill	915.9	913.8
Intangible assets	208.7	218.1
Deferred income taxes	15.2	14.8
Other assets and deferred charges	148.6	126.5
Total assets	3,469.0	3,393.9
Current liabilities:
Short-term debt	0.4	5.1
Current maturities of long-term debt	6.3	6.5
Accounts payable	187.9	185.5
Income tax payable	7.8	27.4
Accrued compensation and related items	56.7	67.5
Other current liabilities	296.3	105.7
Total current liabilities	555.4	397.7
Long-term debt, net of unamortized discount and deferred financing costs	955.0	959.6
Deferred income taxes	90.7	130.5
Accrued pension and postretirement benefits	19.5	20.5
Other non-current liabilities	98.7	102.4
Total liabilities	1,719.3	1,610.7
Shareholders' equity:
Preferred stock, without par value; 1,000,000 shares authorized; none issued	0.0	0.0
Common stock, par value at $0.10 per share; 100,000,000 shares authorized; Issued 50,099,919 shares in 2025 and 49,993,737 shares in 2024	5.0	5.0
Additional paid-in capital	535.1	523.9
Retained earnings	2,481.9	2,514.5
Accumulated other comprehensive loss	(340.4)	(387.1)
Less common stock held in treasury, at cost; 19,065,813 shares in 2025 and 18,098,082 shares in 2024	(968.2)	(909.3)
Total Minerals Technologies Inc. shareholders' equity	1,713.4	1,747.0
Non-controlling interests	36.3	36.2
Total shareholders' equity	1,749.7	1,783.2
Total liabilities and shareholders' equity	$ 3,469.0	$ 3,393.9

Property, Plant, and Equipment

12 Months Ended

Dec. 31, 2025

Property, Plant, and Equipment [Abstract]

Property, Plant and Equipment

Note 10. Property, Plant, and Equipment

The major categories of property, plant, and equipment and accumulated depreciation and depletion are presented below:


	December 31,
(in millions of dollars)		2025			2024
Mineral rights and reserves	$	560.9		$	560.0
Land		48.9			43.0
Buildings		211.9			202.0
Machinery and equipment		1,272.9			1,236.4
Furniture and fixtures and other		155.2			144.5
Construction in progress		59.1			50.7
		2,308.9			2,236.6
Less: accumulated depreciation and depletion		(1,283.9	)		(1,246.9	)
Property, plant and equipment, net	$	1,025.0		$	989.7

For the years ended December 31, 2025 and 2024, the Company recorded a net gain of $5.6 million and $12.3 million, respectively for the sale of refractories manufacturing assets in China. In addition, for the year ended December 31, 2025, the Company recorded a net gain of $4.3 million related to the sale of our chromite mine in South Africa.

For the year ended December 31, 2025, the Company recorded a $4.7 million charge in restructuring and other items for the write-down of assets relating to the consolidation and shutdown of facilities.

Depreciation and depletion expense for the years ended December 31, 2025, 2024, and 2023 was $75.2 million, $79.5 million, and $79.4 million, respectively.

Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2025

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income (Loss)

Note 19. Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) at December 31 comprised of the following components:


	December 31,
(in millions of dollars)		2025			2024
Cumulative foreign currency translation	$	(360.9	)	$	(399.6	)
Unrecognized pension benefit (net of tax expense of $3.9 in 2025 and $1.2 in 2024)		10.3			1.9
Unrealized gain on cash flow hedges (net of tax expense (benefit) of $(0.1) in 2025 and $0.1 in 2024)		10.2			10.6
Total accumulated other comprehensive loss	$	(340.4	)	$	(387.1	)

The following table summarizes the changes in other comprehensive income (loss) by component:


	Year Ended December 31,
	2025									2024									2023
					Tax			Net-of-						Tax			Net-of-						Tax			Net-of-
		Pre-Tax			(Expense)			Tax			Pre-Tax			(Expense)			Tax			Pre-Tax			(Expense)			Tax
(in millions of dollars)		Amount			Benefit			Amount			Amount			Benefit			Amount			Amount			Benefit			Amount
Foreign currency translation adjustment	$	38.5		$	-		$	38.5		$	(49.9	)	$	-		$	(49.9	)	$	(6.1	)	$	-		$	(6.1	)

Pension plans:
Net actuarial gains (losses) and prior service costs arising during the period		10.8			(2.9	)		7.9			39.5			(9.7	)		29.8			5.1			(1.4	)		3.7
Amortization of net actuarial (gains) losses and prior service costs		0.7			(0.2	)		0.5			1.1			(0.3	)		0.8			2.5			(0.6	)		1.9

Unrealized gains (losses) on cash flow hedges		(0.5	)		0.1			(0.4	)		0.4			(0.1	)		0.3			(4.5	)		1.2			(3.3	)

Total other comprehensive income (loss)	$	49.5		$	(3.0	)	$	46.5		$	(8.9	)	$	(10.1	)	$	(19.0	)	$	(3.0	)	$	(0.8	)	$	(3.8	)

The pre-tax amortization amounts of pension plans in the table above are included within the components of net periodic pension benefit costs (see Note 16) and the related tax amounts are included within provision for taxes on income line within the Consolidated Statements of Income (Loss).

Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2025
Acquisitions [Abstract]
Acquisitions	Note 4. Acquisitions Concept Pet Heimtierprodukte GmbH On April 29, 2022, the Company completed the acquisition of Concept Pet Heimtierprodukte GmbH (“Concept Pet”), a European supplier of pet litter products. The purchase of Concept Pet supports the expansion of our European pet care business, as well as providing additional mineral reserves. The purchase price was $28.0 million and the acquisition was financed through cash on hand. The fair value of the total consideration transferred, net of cash acquired, was $22.4 million. In the second quarter of 2023, an additional $1.8 million of hold back consideration was paid. In the second quarter of 2024, an additional $4.0 million was paid representing the final holdback consideration. The results of Concept Pet are included within our Household & Personal Care product line in our Consumer & Specialties segment. The acquisition has been accounted for using the acquisition method of accounting, which requires, among other things, that we recognize the assets acquired and liabilities assumed at their respective fair values as of the acquisition date. The Company recorded goodwill of $9.3 million and intangible assets of $4.3 million relating to this acquisition. The Company incurred no acquisition-related transaction and integration costs during 2025 and 2024 and recorded $0.3 million of acquisition-related costs during 2023, which are reflected within the acquisition-related expenses line of the Consolidated Statements of Income (Loss).

- Definition

The entire disclosure for business combination.

+ References

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+ Details

Derivative Financial Instruments and Hedging Activities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) Contract	Dec. 31, 2024 USD ($) Contract	Dec. 31, 2023 USD ($)	Jul. 02, 2023 USD ($)
Foreign Exchange Forward [Member]
Derivative Financial Instruments and Hedging Activities [Abstract]
Gains (losses) on derivatives	$ 0.4	$ (0.1)	$ (0.1)
Number of contracts (in Contract) \| Contract	0	0
Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Derivative Financial Instruments and Hedging Activities [Abstract]
Notional amount				$ 150.0
Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member] \| Other Current Liabilities [Member]
Derivative Financial Instruments and Hedging Activities [Abstract]
Fair value of derivative liability	$ 0.2

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2025

Fair Value of Financial Instruments [Abstract]

Fair Value of Financial Instruments

Note 13. Fair Value of Financial Instruments

Fair value is an exchange price that would be received for an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants at the measurement date. The Company utilizes market data or assumptions that market participants would use in pricing the asset or liability. The Company follows a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs about which little or no market data exists, therefore requiring an entity to develop its own assumptions.

Assets and liabilities measured at fair value are based on one or more of three valuation techniques. The three valuation techniques are as follows:

Market approach – prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.
Cost approach – amount that would be required to replace the service capacity of an asset or replacement cost.
Income approach – techniques to convert future amounts to a single present amount based on market expectations, including present value techniques, option-pricing, and other models.

The Company primarily applies the income approach for foreign exchange derivatives for recurring fair value measurements and attempts to utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.

The following table sets forth by level within the fair value hierarchy the Company’s financial assets and liabilities accounted for at fair value on a recurring basis at the end of each of the past two years. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels.


(in millions of dollars)				Fair Value Measurements Using
		Asset /			Quoted Prices in		Significant			Significant
		(Liability)			Active Markets for		Other Observable			Unobservable
		Balance at			Identical Assets		Inputs			Inputs
Description		December 31, 2025			(Level 1)		(Level 2)			(Level 3)
Deferred compensation plan assets	$	13.9		$	-	$	13.9		$	-

Supplementary pension plan assets		40.1			-		40.1			-

Interest rate swap		(0.2	)		-		(0.2	)		-


			Fair Value Measurements Using
		Asset /		Quoted Prices in		Significant		Significant
		(Liability)		Active Markets for		Other Observable		Unobservable
		Balance at		Identical Assets		Inputs		Inputs
Description		December 31, 2024		(Level 1)		(Level 2)		(Level 3)
Deferred compensation plan assets	$	13.6	$	-	$	13.6	$	-

Supplementary pension plan assets		19.4		-		19.4		-

Interest rate swap		0.3		-		0.3		-

The fair value of foreign exchange contracts is determined based on inputs that are readily available in public markets or can be derived from information available in publicly quoted markets and are categorized as Level 2. Deferred compensation and supplementary pension plan assets related to the Company’s 2014 acquisition of AMCOL International Corporation are valued using quoted prices for similar assets in active markets.

The Company does not have any financial assets or liabilities measured at fair value on a recurring basis categorized as Level 3, except for pension assets discussed in Note 16, and there were no transfers in or out of Level 3 during the year ended December 31, 2025 and 2024. There were also no changes to the Company’s valuation techniques used to measure asset and liability fair values on a recurring basis.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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-Section 50
-Paragraph 2
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+ Details

Leases - Supplemental Cash Flow Information and Non-cash Activity Related to Operating Leases (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 20.0
Non-cash activity:
Right-of-use assets obtained in the exchange for operating lease liabilities	$ 13.2

Earnings (Loss) Per Share

12 Months Ended

Dec. 31, 2025

Earnings (Loss) Per Share [Abstract]

Earnings (Loss) Per Share

Note 7. Earnings (Loss) Per Share (EPS)


	Year Ended December 31,
(in millions of dollars, except per share data)		2025			2024		2023

Net income (loss) attributable to Minerals Technologies Inc.	$	(18.4	)	$	167.1	$	84.1

Weighted average shares outstanding		31.4			32.1		32.5
Dilutive effect of stock options and deferred restricted stock units		-			0.2		0.1
Weighted average shares outstanding, adjusted		31.4			32.3		32.6

Basic earnings (loss) per share attributable to MTI	$	(0.59	)	$	5.21	$	2.59

Diluted earnings (loss) per share attributable to MTI	$	(0.59	)	$	5.17	$	2.58

Of the options outstanding of 1,516,385, 1,425,636, and 1,514,462 for the years ended December 31, 2025, 2024, and 2023, respectively, options to purchase 1,188,948 shares, 194,412 shares, and 917,177 shares of common stock for the years ended December 31, 2025, 2024, and 2023, respectively, were not included in the computation of diluted earnings (loss) per share because they were anti-dilutive, as the exercise prices of the options were greater than the average market price of the common shares. Due to our net loss for the year ended December 31, 2025, all options to purchase shares were anti-dilutive and were excluded.

Earnings (Loss) Per Share - Computation of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings (Loss) Per Share [Abstract]
Net income (loss) attributable to Minerals Technologies Inc. (in Dollars)	$ (18.4)	$ 167.1	$ 84.1
Weighted average shares outstanding (in Shares)	31.4	32.1	32.5
Dilutive effect of stock options and deferred restricted stock units (in Shares)	0.0	0.2	0.1
Weighted average shares outstanding, adjusted (in Shares)	31.4	32.3	32.6
Basic earnings (loss) per share attributable to MTI (in Dollars per share)	$ (0.59)	$ 5.21	$ 2.59
Diluted earnings (loss) per share attributable to MTI (in Dollars per share)	$ (0.59)	$ 5.17	$ 2.58

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481538/470-20-65-4

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025
Summary of Significant Accounting Policies [Abstract]
Short-term investments	$ 3.6	$ 4.0	$ 3.6
Unrealized holding gains or losses on short-term bank investments			$ 0.0
Past due threshold for individual collectability review			90 days
Allowance for doubtful accounts	16.7	17.1	$ 16.7
Equity method investment	24.7	23.4	$ 24.7
Revenue adjustments	$ 0.0	$ 0.0
Minimum [Member]
Summary of Significant Accounting Policies [Abstract]
Initial term of long-term evergreen contracts			10 years
Maximum [Member]
Summary of Significant Accounting Policies [Abstract]
Initial term of long-term evergreen contracts			15 years
Buildings [Member] \| Minimum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			3.00%
Buildings [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			6.67%
Machinery and Equipment [Member] \| Minimum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			6.67%
Machinery and Equipment [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			12.50%
Furniture and Fixtures [Member] \| Minimum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			8.00%
Furniture and Fixtures [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			12.50%
Computer Equipment and Software-related Assets [Member] \| Minimum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			12.50%
Computer Equipment and Software-related Assets [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Abstract]
Annual rates of depreciation			25.00%
Machinery and Equipment for Natural Stone Mining and Processing Plants and Chemical Plants [Member]
Summary of Significant Accounting Policies [Abstract]
Estimated useful life	15 years		15 years
PCC Production Facilities [Member]
Summary of Significant Accounting Policies [Abstract]
Estimated useful life	15 years		15 years

Income Taxes

12 Months Ended

Dec. 31, 2025

Income Taxes [Abstract]

Income Taxes

Note 8. Income Taxes

Income (loss) from operations before provision for taxes by domestic and foreign source is as follows:


	Year Ended December 31,
(in millions of dollars)		2025			2024		2023
Income (loss) from operations before income taxes and income from affiliates
and joint ventures:
Domestic	$	(172.4	)	$	40.7	$	(38.9	)
Foreign		158.4			182.9		146.6
	$	(14.0	)	$	223.6	$	107.7

Upon adoption of ASU 2023-09, "Improvements to Income Tax Disclosures" (see Note 1), the provision (benefit) for taxes on income consists of the following:


		Year Ended
		December 31,
(in millions of dollars)		2025
Current Tax Expense (Benefit)
U.S. Federal	$	5.8
U.S. State and local		3.6
Foreign		41.3
Total current tax expense (benefit)		50.7

Deferred Tax Expense (Benefit)
U.S. Federal		(32.9	)
U.S. State and local		(8.7	)
Foreign		(4.2	)
Total deferred tax expense (benefit)		(45.8	)

Total Income Tax Expense (Benefit)
U.S. Federal		(27.1	)
U.S. State and local		(5.1	)
Foreign		37.1
Total income tax expense (benefit)	$	4.9

The provision (benefit) for taxes on income prior to adoption of ASU 2023-09 consists of the following:


(in millions of dollars)	Year Ended December 31,
Domestic		2024			2023
Taxes currently payable
Federal	$	20.0		$	9.5
State and local		2.8			6.7
Deferred income taxes		(12.3	)		(31.5	)
Domestic tax provision (benefit)		10.5			(15.3	)

Foreign
Taxes currently payable		44.2			42.2
Deferred income taxes		4.7			(3.2	)
Foreign tax provision		48.9			39.0
Total tax provision	$	59.4		$	23.7

The provision (benefit) for taxes on income shown in the previous table is classified based on the location of the taxing authority, regardless of the location in which the taxable income is generated.

Upon adoption of ASU 2023-09, "Improvements to Income Tax Disclosures" (see Note 1), the reconciliation of taxes at the U.S. federal statutory tax rate to our provision for taxes for the year ended December 31, 2025, is as follows:


	Year Ended December 31,
		2025
			Amount (in millions)		Effective Tax Rate %
Net income (loss) before tax and equity in earnings		$	(14.0	)
U.S. federal statutory tax rate			(2.9	)	21.0	%
State and local income taxes, net of federal income tax effect			(3.0	)	21.8	%
Foreign tax effects
Brazil
Effects of rates different than statutory			2.2		(16.1	)%
Other adjustments			(0.1	)	0.6	%
China			2.7		(19.5	)%
Other foreign jurisdictions			0.8		(5.9	)%
Effect of cross-border tax laws
Global Intangible Low-Tax Income (GILTI)			3.6		(25.4	)%
Foreign Derived Intangible Income (FDII)			(0.8	)	5.5	%
Other adjustments			0.3		(2.5	)%
Tax credits			(0.1	)	0.7	%
Nontaxable or nondeductible items
Debtor-In-Possession Credit Agreement			10.5		(75.2	)%
Depletion			(8.4	)	60.1	%
Section 162(m)			1.5		(10.7	)%
Previously taxed income - Foreign exchange loss			(3.0	)	21.3	%
Other permanent differences			1.6		(11.1	)%
Changes in unrecognized tax benefits			(0.1	)	1.0	%
Other adjustments			0.1		(0.6	)%
Consolidated effective tax rate		$	4.9		(35.0	)%

The majority of the state and local taxes are comprised of the following states: MN, CA, NY, SC, IL, IN, TN, and PA.

The major elements contributing to the difference between the U.S. federal statutory tax rate and the consolidated effective tax rate for the years ended December 31, 2024 and 2023 in accordance with the guidance prior to adoption of ASU 2023-09 are as follows:


	Year Ended December 31,
		2024		2023
U.S. statutory rate		21.0	%	21.0	%

Depletion		(4.4	)%	(10.3	)%
Difference between tax provided on foreign earnings and the U.S. statutory rate		4.7	%	7.7	%
GILTI		0.1	%	1.0	%
FDII		(1.0	)%	(2.5	)%
State and local taxes, net of federal tax benefit		1.4	%	(0.1	)%
Tax credits		(0.7	)%	(0.6	)%
Bankruptcy Funding		3.1	%	0.0	%
Impact of uncertain tax positions		(0.3	)%	0.2	%
Impact of officer's non-deductible compensation		1.1	%	1.9	%
Foreign Withholding tax		0.8	%	2.0	%
Other		0.8	%	1.7	%
Consolidated effective tax rate		26.6	%	22.0	%

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:


	December 31,
(in millions of dollars)		2025			2024
Deferred tax assets attributable to:
Accrued liabilities	$	62.3		$	31.4
Net operating loss carry forwards		17.6			23.2
Pension and postretirement benefits costs		-			2.9
Interest		17.0			16.2
Research and development capitalization		12.6			11.0
Valuation allowance		(15.1	)		(20.6	)
Other		10.8			13.3
Total deferred tax assets		105.2			77.4
Deferred tax liabilities attributable to:
Plant and equipment, principally due to differences in depreciation		124.8			138.0
Intangible assets		45.9			49.5
Pension and postretirement benefits costs		1.6			-
Other		8.4			5.6
Total deferred tax liabilities		180.7			193.1
Net deferred tax liability	$	(75.5	)	$	(115.7	)

Net deferred tax assets and net deferred tax liabilities are classified as follows:


	December 31,
(in millions of dollars)		2025			2024
Net deferred tax asset, long-term	$	15.2		$	14.8
Net deferred tax liability, long-term		90.7			130.5
Net deferred tax liability, long-term	$	(75.5	)	$	(115.7	)

The Company has $17.6 million of deferred tax assets arising from tax loss carry forwards which will be realized through future operations. Carry forwards of approximately $12.2 million expire over the next 20 years, and $5.4 million can be utilized over an indefinite period.

On December 31, 2025, the Company had $1.8 million of total unrecognized tax benefits. Included in this amount were a total of $1.2 million of unrecognized income tax benefits that, if recognized, would affect the Company’s effective tax rate.

The following table summarizes the activity related to our unrecognized tax benefits:

	December 31,
(in millions of dollars)		2025			2024
Balance at beginning of the year	$	1.9		$	2.8
Increases related to current year positions		0.5			0.5
Decreases related to audit settlements and statute expirations		(0.6	)		(1.4	)
Balance at the end of the year	$	1.8		$	1.9

The Company’s accounting policy is to recognize interest and penalties accrued, relating to unrecognized income tax benefits as part of its provision for income taxes. The Company had a total accrued balance of $0.4 million for interest and penalties for the year ended December 31, 2025. The Company believes that its accrued liabilities are sufficient to cover its U.S. and foreign tax contingencies.

The Company operates in multiple taxing jurisdictions, both within and outside the U.S. In certain situations, a taxing authority may challenge positions that the Company has adopted in its income tax filings. The Company, with a few exceptions (none of which are material), is no longer subject to U.S. federal, state, local, and international income tax examinations by tax authorities for years prior to 2017.

Upon adoption of ASU 2023-09, Improvements to Income Tax Disclosures (see Note 1), cash paid for income taxes, net of refunds during the year ended December 31, 2025, were as follows:


	December 31,
(in millions of dollars)			2025
U.S. - Federal		$	18.0
U.S. - State			3.2
Foreign
Brazil			6.7
Canada			3.9
China			12.3
Turkey			8.6
All other countries			16.1
Total income taxes paid, net		$	68.8

The Company had approximately $516.3 million of foreign subsidiaries’ undistributed earnings as of December 31, 2025. We intend to continue to permanently reinvest these earnings overseas for the foreseeable future and while U.S. federal tax expense has been recognized as a result of recent U.S. tax code changes, no deferred tax liabilities with respect to foreign withholding taxes or state taxes have been recognized.

On July 4, 2025, the One Big Beautiful Bill Act was signed into law in the U.S. It contains a broad range of tax reform provisions affecting businesses. The Company evaluated the full effects of the legislation on our annual effective tax rate and cash tax position, and it did not have a material impact on its Consolidated Financial Statements.

In December 2021, the Organization for Economic Co-operation and Development (“OECD”) released the Pillar Two Model Rules which aim to reform international corporate taxation rules, including the implementation of a global minimum tax rate. The Company began implementation of the Pillar Two Model Rules in the first quarter of 2024. The Company continues to assess the effect of the Pillar Two Model Rules in all jurisdictions and does not expect that Pillar Two will have a material impact on its Consolidated Financial Statements.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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+ Details

Financial Instruments and Concentrations of Credit Risk (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financial Instruments and Concentrations of Credit Risk [Abstract]
Provision for credit losses	$ 30.0	$ 30.0
Bad debt expense			$ 4.1	$ 1.4	$ 2.8

Segment and Related Information - Financial Information Related to Operations by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment and Related Information [Abstract]
Net sales	$ 2,072.6	$ 2,118.5	$ 2,169.9
Long-lived assets	2,149.6	2,121.6	2,131.4
Total International [Member]
Segment and Related Information [Abstract]
Net sales	997.6	1,029.1	1,025.9
Long-lived assets	304.6	272.5	289.4
Reportable Geographical Components [Member] \| United States [Member]
Segment and Related Information [Abstract]
Net sales	1,075.0	1,089.4	1,144.0
Long-lived assets	1,845.0	1,849.1	1,842.0
Reportable Geographical Components [Member] \| Canada/Latin America [Member]
Segment and Related Information [Abstract]
Net sales	136.9	151.2	150.2
Long-lived assets	17.0	14.6	17.7
Reportable Geographical Components [Member] \| Europe/Africa [Member]
Segment and Related Information [Abstract]
Net sales	498.5	521.1	525.5
Long-lived assets	166.5	147.3	157.0
Reportable Geographical Components [Member] \| Asia [Member]
Segment and Related Information [Abstract]
Net sales	362.2	356.8	350.2
Long-lived assets	$ 121.1	$ 110.6	$ 114.7

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Property, Plant, and Equipment (Tables)

12 Months Ended

Dec. 31, 2025

Property, Plant, and Equipment [Abstract]

Major Categories of Property, Plant, and Equipment and Accumulated Depreciation and Depletion

The major categories of property, plant, and equipment and accumulated depreciation and depletion are presented below:


	December 31,
(in millions of dollars)		2025			2024
Mineral rights and reserves	$	560.9		$	560.0
Land		48.9			43.0
Buildings		211.9			202.0
Machinery and equipment		1,272.9			1,236.4
Furniture and fixtures and other		155.2			144.5
Construction in progress		59.1			50.7
		2,308.9			2,236.6
Less: accumulated depreciation and depletion		(1,283.9	)		(1,246.9	)
Property, plant and equipment, net	$	1,025.0		$	989.7

Income Taxes - Provision (Benefit) for Taxes on Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current Tax Expense (Benefit)
U.S. Federal current tax expense (benefit)	$ 5.8	$ 20.0	$ 9.5
U.S. State and local current tax expense (benefit)	3.6	2.8	6.7
Foreign current tax expense (benefit)	41.3	44.2	42.2
Total current tax expense (benefit)	50.7
Domestic deferred income taxes		(12.3)	(31.5)
Domestic tax provision (benefit)		10.5	(15.3)
Foreign
Foreign current tax expense (benefit)	41.3	44.2	42.2
Total current tax expense (benefit)	50.7
Foreign deferred tax expense (benefit)	(4.2)	4.7	(3.2)
Foreign total income tax expense (benefit)	37.1	48.9	39.0
Total income tax expense (benefit)	4.9	59.4	23.7
Total deferred tax expense (benefit)	(45.8)	(7.6)	(34.8)
Deferred Tax Expense (Benefit)
U.S. Federal deferred tax expense (benefit)	(32.9)
U.S. State and local deferred tax expense (benefit)	(8.7)
Foreign deferred tax expense (benefit)	(4.2)	4.7	(3.2)
Foreign total income tax expense (benefit)	37.1	48.9	39.0
Total income tax expense (benefit)	4.9	59.4	23.7
Total deferred tax expense (benefit)	(45.8)	(7.6)	(34.8)
Total Income Tax Expense (Benefit)
U.S. Federal total income tax expense (benefit)	(27.1)
U.S. State and local total income tax expense (benefit)	(5.1)
Foreign total income tax expense (benefit)	37.1	48.9	39.0
Total income tax expense (benefit)	$ 4.9	$ 59.4	$ 23.7

Accumulated Other Comprehensive Income (Loss) - Changes in Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Abstract]
Foreign currency translation adjustment, pre-tax amount	$ 38.5	$ (49.9)	$ (6.1)
Foreign currency translation adjustment, tax (expense) benefit	0.0	0.0	0.0
Foreign currency translation adjustments, net-of-tax amount	38.5	(49.9)	(6.1)
Pension plans:
Net actuarial gains (losses) and prior service costs arising during the period, pre-tax amount	10.8	39.5	5.1
Net actuarial gains (losses) and prior service costs arising during the period, tax (expense) benefit	(2.9)	(9.7)	(1.4)
Net actuarial gains (losses) and prior service costs arising during the period, net-of-tax amount	7.9	29.8	3.7
Amortization of net actuarial (gains) losses and prior service costs, pre-tax amount	0.7	1.1	2.5
Amortization of net actuarial (gains) losses and prior service costs, tax (expense) benefit	(0.2)	(0.3)	(0.6)
Amortization of net actuarial (gains) losses and prior service costs, net-of-tax amount	0.5	0.8	1.9
Unrealized gains (losses) on cash flow hedges, pre-tax amount	(0.5)	0.4	(4.5)
Unrealized gains (losses) on cash flow hedges, tax (expense) benefit	0.1	(0.1)	1.2
Unrealized gains (losses) on cash flow hedges, net-of-tax amount	(0.4)	0.3	(3.3)
Total other comprehensive income (loss), pre-tax amount	49.5	(8.9)	(3.0)
Total other comprehensive income (loss), tax	(3.0)	(10.1)	(0.8)
Total other comprehensive income (loss), net of tax	$ 46.5	$ (19.0)	$ (3.8)

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2025

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

Note 11. Goodwill and Other Intangible Assets

Goodwill and other intangible assets with indefinite lives are not amortized, but instead are assessed for impairment, at least annually. The carrying amount of goodwill was $915.9 million and $913.8 million as of December 31, 2025 and December 31, 2024, respectively. The net change in goodwill since December 31, 2025 was attributable to the effects of foreign exchange.

The balance of goodwill by reporting unit and the activity occurring in the past two fiscal years is as follows:


		Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions			Consolidated
Balance at December 31, 2023	$	345.2	$	568.4		$	913.6

Change in goodwill relating to:
Foreign exchange translation		0.5		(0.3	)		0.2
Total Changes	$	0.5	$	(0.3	)	$	0.2

Balance at December 31, 2024	$	345.7	$	568.1		$	913.8

Change in goodwill relating to:
Foreign exchange translation		1.5		0.6			2.1
Total Changes	$	1.5	$	0.6		$	2.1

Balance at December 31, 2025	$	347.2	$	568.7		$	915.9

Acquired intangible assets subject to amortization as of December 31, 2025 and December 31, 2024 were as follows:


		December 31, 2025				December 31, 2024
		(in millions of dollars)				(in millions of dollars)
	Weighted Average		Gross				Gross
	Useful Life		Carrying		Accumulated		Carrying		Accumulated
	(Years)		Amount		Amortization		Amount		Amortization
Tradenames	34	$	221.4	$	67.6	$	221.5	$	63.0
Technology	20		18.8		15.5		18.8		15.1
Patents and trademarks	19		6.4		6.4		6.4		6.4
Customer relationships	21		80.4		28.8		77.5		21.6
	29	$	327.0	$	118.3	$	324.2	$	106.1

The weighted average amortization period of the acquired intangible assets subject to amortization is approximately 29 years. Amortization expense was approximately $11.4 million, $12.1 million, and $12.7 million for the years ended December 31, 2025, 2024, and 2023, respectively and is recorded within the marketing and administrative expenses line within the Consolidated Statements of Income (Loss). The estimated amortization expense is as follows: 2026 - $11.5 million; 2027 - $11.5 million; 2028 - $11.5 million; 2029 - $11.5 million; 2030 - $11.5 million; and $151.2 million thereafter.

Benefit Plans

12 Months Ended

Dec. 31, 2025

Benefit Plans [Abstract]

Benefit Plans

Note 16. Benefit Plans

Pension Plans and Other Postretirement Benefit Plans

The Company and its subsidiaries have pension plans covering the majority of eligible employees on a contributory or non-contributory basis. Benefits under defined benefit plans are generally based on years of service and an employee’s career earnings. Employees generally become fully vested after five years.

The Company also provides postretirement health care and life insurance benefits for the majority of its U.S. retired employees. Employees are generally eligible for benefits upon retirement and completion of a specified number of years of creditable service. The Company does not pre-fund these benefits and has the right to modify or terminate the plan in the future.

The Company’s disclosures for the U.S. plans have been combined with those outside of the U.S. as the international plans do not have significantly different assumptions and together represent approximately 20% of our total benefit obligation.

The following table sets forth the Company’s pension obligation and funded status at December 31:


	Pension Benefits						Postretirement Benefits
(in millions of dollars)		2025			2024			2025			2024
Change in benefit obligations:
Beginning projected benefit obligation	$	342.3		$	368.9		$	1.8		$	2.0
Service cost		3.8			4.2			-			-
Interest cost		16.5			16.0			0.1			0.1
Actuarial (gain)/loss		4.5			(25.4	)		(0.1	)		(0.1	)
Benefits paid		(23.0	)		(18.7	)		(0.1	)		(0.1	)
Foreign exchange impact		5.3			(3.1	)		0.1			(0.1	)
Other		(0.1	)		0.4			-			-
Ending projected benefit obligation		349.3			342.3			1.8			1.8

Change in plan assets:
Beginning fair value		341.3			317.4			-			-
Actual return on plan assets		38.0			33.5			-			-
Employer contributions		8.5			11.6			0.1			0.1
Plan participants' contributions		0.4			0.4			-			-
Benefits paid		(23.4	)		(18.7	)		(0.1	)		(0.1	)
Foreign exchange impact		5.1			(2.9	)		-			-
Ending fair value		369.9			341.3			-			-

Funded status	$	20.6		$	(1.0	)	$	(1.8	)	$	(1.8	)

The following table presents our domestic and foreign ending projected benefit obligation information at December 31, 2025, 2024 and 2023:

	U.S. Plans						International Plans
(in millions of dollars)		2025		2024		2023		2025		2024		2023
Ending projected benefit obligation	$	279.5	$	275.2	$	293.4	$	71.6	$	68.9	$	77.5

Amounts recognized in the Consolidated Balance Sheets consist of:


	Pension Benefits						Postretirement Benefits
(in millions of dollars)		2025			2024			2025			2024
Non-current asset	$	40.1		$	19.5		$	-		$	-
Current liability		(1.7	)		(1.6	)		(0.1	)		(0.1	)
Non-current liability		(17.8	)		(18.9	)		(1.7	)		(1.7	)
Net asset (liability) recognized	$	20.6		$	(1.0	)	$	(1.8	)	$	(1.8	)

The non-current pension assets are included in other assets and deferred charges and the current portion of pension liabilities is included in accrued compensation and related items on the Consolidated Balance Sheets.

Amounts recognized in accumulated other comprehensive loss, net of related tax effects, consist of:


	Pension Benefits					Postretirement Benefits
(in millions of dollars)		2025			2024		2025			2024
Net actuarial (gain) loss	$	(7.4	)	$	1.2	$	(3.0	)	$	(3.2	)
Prior service cost		0.1			0.1		-			-
Amount recognized end of year	$	(7.3	)	$	1.3	$	(3.0	)	$	(3.2	)

The accumulated benefit obligation for all defined benefit pension plans was $334.7 million and $327.5 million at December 31, 2025 and 2024, respectively. The accumulated benefit obligations and projected benefit obligations are in excess of the plan assets for primarily all of the Company’s defined benefit plans.

Changes in the Plan assets and benefit obligations recognized in other comprehensive income:


	Pension Benefits				Postretirement Benefits
(in millions of dollars)		2025		2024		2025			2024
Current year actuarial gain	$	7.8	$	29.7	$	0.1		$	0.1
Amortization of actuarial (gain) loss		0.8		1.1		(0.3	)		(0.3	)
Total recognized in other comprehensive income	$	8.6	$	30.8	$	(0.2	)	$	(0.2	)

The components of net periodic benefit costs are as follows:


	Pension Benefits									Postretirement Benefits
(in millions of dollars)		2025			2024			2023			2025			2024			2023
Service cost	$	3.8		$	4.2		$	4.5		$	-		$	-		$	-
Interest cost		16.5			16.0			16.0			0.1			0.1			0.1
Expected return on plan assets		(21.9	)		(19.8	)		(17.8	)		-			-			-
Recognized net actuarial (gain) loss		1.1			1.5			2.9			(0.4	)		(0.4	)		(0.5	)
Settlement/curtailment (gain) loss		(0.1	)		-			0.1			-			-			-
Net periodic (benefit) cost	$	(0.6	)	$	1.9		$	5.7		$	(0.3	)	$	(0.3	)	$	(0.4	)

Unrecognized prior service cost is amortized over the average remaining service period of each active employee.

The Company’s funding policy for U.S. plans generally is to contribute annually into trust funds at a rate that provides for future plan benefits and maintains appropriate funded percentages. Annual contributions to the U.S. qualified plans are at least sufficient to satisfy regulatory funding standards and are not more than the maximum amount deductible for income tax purposes. The funding policies for the international plans conform to local governmental and tax requirements. The plans’ assets are invested primarily in stocks and bonds.

Additional Information


	Year Ended December 31,
		2025		2024		2023
Discount rate		5.27	%	5.16	%	4.84	%
Expected return on plan assets		6.64	%	6.59	%	6.53	%
Rate of compensation increase		2.75	%	2.75	%	2.77	%
Interest crediting rate		3.75	%	3.75	%	2.25	%

The weighted average assumptions used to determine benefit obligations for the pension benefit plans and other benefit plans at December 31, 2025, 2024, and 2023 are as follows:


	Year Ended December 31,
		2025		2024		2023
Discount rate		5.20	%	4.75	%	4.63	%
Rate of compensation increase		2.75	%	2.75	%	2.76	%

For 2025, 2024, and 2023, the discount rate was based on the FTSE Pension Discount Curve, a yield curve of high-quality corporate bonds with cash flows matching our plans’ expected benefit payments. The expected return on plan assets is based on our asset allocation mix and our historical return, taking into account current and expected market conditions. The actual return on pension assets was approximately 10% in 2025, 10% in 2024, and 11% in 2023.

The Company maintains a self-funded health insurance plan for its retirees. This plan provided that the maximum health care cost trend rate would be 5%. Effective June 2010, the Company amended its plan to change the eligibility requirement for retirees and revised its plan so that increases in expected health care costs would be borne by the retiree. Effective January 1, 2022, the plan was closed to new retirees.

Plan Assets

The Company’s pension plan weighted average asset allocation percentages at December 31, 2025 and 2024 by asset category are as follows:

	December 31,
Asset Category		2025		2024
Equity securities		56.0	%	55.3	%
Fixed income securities		31.6	%	33.1	%
Real estate		0.1	%	0.1	%
Other		12.3	%	11.5	%
Total		100.0	%	100.0	%

The Company’s pension plan fair values at December 31, 2025 and 2024 by asset category are as follows:


(in millions of dollars)	December 31,
Asset Category		2025		2024
Equity securities	$	207.3	$	188.7
Fixed income securities		116.8		112.8
Real estate		0.3		0.3
Other		45.5		39.5
Total	$	369.9	$	341.3

The following table presents domestic and foreign pension plan assets information at December 31, 2025, 2024 and 2023 (the measurement date of pension plan assets):


	U.S. Plans						International Plans
(in millions of dollars)		2025		2024		2023		2025		2024		2023
Fair value of plan assets	$	297.9	$	277.1	$	251.4	$	72.0	$	64.2	$	66.0

The following table summarizes our defined benefit pension plan assets measured at fair value as of December 31, 2025:


		Quoted Prices in
		Active Markets for		Significant Other		Significant
(in millions of dollars)		Identical Assets		Observable Inputs		Unobservable Inputs
Pension Assets Fair Value as of December 31, 2025		(Level 1)		(Level 2)		(Level 3)		Total
Equity securities
U.S. equities	$	184.8	$	-	$	-	$	184.8
Non-U.S. equities		22.5		-		-		22.5

Fixed income securities
Corporate debt instruments		99.3		17.5		-		116.8

Real estate and other
Real estate		-		-		0.3		0.3
Other		0.4		-		5.4		5.8
Total		307.0		17.5		5.7		330.2
Pension plan assets at NAV		-		-		-		39.7
Total pension plan assets	$	307.0	$	17.5	$	5.7	$	369.9

The following table summarizes our defined benefit pension plan assets measured at fair value as of December 31, 2024:

		Quoted Prices in
		Active Markets for		Significant Other		Significant
(in millions of dollars)		Identical Assets		Observable Inputs		Unobservable Inputs
Pension Assets Fair Value as of December 31, 2024		(Level 1)		(Level 2)		(Level 3)		Total
Equity securities
U.S. equities	$	167.2	$	-	$	-	$	167.2
Non-U.S. equities		21.5		-		-		21.5

Fixed income securities
Corporate debt instruments		98.9		13.9		-		112.8

Real estate and other
Real estate		-		-		0.3		0.3
Other		0.4		-		5.2		5.6
Total		288.0		13.9		5.5		307.4
Pension plan assets at NAV		-		-		-		33.9
Total pension plan assets	$	288.0	$	13.9	$	5.5	$	341.3

U.S. equities – This class included actively and passively managed common equity securities comprised primarily of large-capitalization stocks with value, core, and growth strategies.

Non-U.S. equities – This class included actively managed common equity securities comprised primarily of international large-capitalization stocks.

Fixed income – This class included corporate debt instruments.

Real Estate and other – This class included assets related to real estate and other assets such as insurance contracts.

Assets classified as Level 1 are valued using quoted prices on the major stock exchange on which individual assets are traded. Our Level 2 assets are valued using net asset value. The net asset value is quoted on a private market that is not active; however, the unit price is based on the underlying investments that are traded on an active market. Our Level 3 assets are estimated at fair value based on the most recent financial information available for the underlying securities, which are not traded on active market, and represent significant unobservable input.

The following is a reconciliation of changes in fair value measurement of plan assets using significant unobservable inputs (Level 3):


(in millions of dollars)
Beginning balance at December 31, 2023	$	7.1
Purchases, sales, settlements		-
Actual (loss) return on plan assets still held at reporting date		(1.6	)
Foreign exchange impact		-
Ending balance at December 31, 2024	$	5.5
Purchases, sales, settlements		-
Actual return on plan assets still held at reporting date		0.1
Foreign exchange impact		0.1
Ending balance at December 31, 2025	$	5.7

There were no transfers in or out of Level 3 during the years ended December 31, 2025 and 2024.

Contributions

The Company expects to contribute $10.8 million to its pension plans and $0.1 million to its other postretirement benefit plan in 2026.

Estimated Future Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:


		Pension		Other
(in millions of dollars)		Benefits		Benefits
2026	$	25.5	$	0.1
2027	$	26.8	$	0.2
2028	$	26.7	$	0.2
2029	$	25.4	$	0.2
2030	$	25.7	$	0.2
2031-2035	$	124.7	$	0.7

Investment Strategies

The investment strategy for pension plan assets is to maintain a broadly diversified portfolio designed to both preserve and grow plan assets to meet future plan obligations. The Company’s average rate of return on assets from inception through December 31, 2025, was approximately 9%. The Company’s assets are strategically allocated among equity, debt, and other investments to achieve a diversification level that dampens fluctuations in investment returns. The Company’s long-term investment strategy is an investment portfolio mix of approximately 55%-65% in equity securities, 30%-35% in fixed income securities, and 0%-15% in other securities.

Savings and Investment Plan

The Company maintains a voluntary Savings and Investment Plan (a 401(k) plan) for most non-union employees in the U.S. Within prescribed limits, the Company bases its contribution to the Savings and Investment Plan on employee contributions. The Company’s contributions amounted to $6.7 million, $6.4 million, and $6.2 million for the years ended December 31, 2025, 2024, and 2023, respectively.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (p)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480266/715-60-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480126/715-20-S99-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/715/tableOfContent

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

Stockholders' Equity

12 Months Ended

Dec. 31, 2025

Stockholders’ Equity [Abstract]

Stockholders' Equity

Note 18. Stockholders’ Equity

Capital Stock

The Company’s authorized capital stock consists of 100 million shares of common stock, par value $0.10 per share, of which 31,034,106 shares and 31,895,655 shares were outstanding at December 31, 2025 and 2024, respectively, and 1,000,000 shares of preferred stock, none of which were issued and outstanding.

Cash Dividends

Cash dividends of $14.2 million or $0.45 per common share were paid during 2025. In January 2026, a cash dividend of approximately $3.7 million or $0.12 per share, was declared, payable in the first quarter of 2026.

Stock Award and Incentive Plan

The Company’s 2015 Stock Award and Incentive Plan provides for grants of incentive and non-qualified stock options, restricted stock, restricted stock units, stock appreciation rights, stock awards, and performance unit awards (the 2015 Stock Award and Incentive Plan, as amended, referred to herein as the “Plan” and together with its predecessor for awards granted prior to May 2015, the 2001 Stock Award and Incentive Plan, as amended and restated, the “Plans”). At the Company's 2024 Annual Meeting of Stockholders, the Company's stockholders ratified the adoption of an amendment and restatement of the Plan, which increased the number of shares available for issuance pursuant to the Plan by 889,000 shares and removed certain individual award limits in light of recent tax law changes. The Plans are administered by the Compensation Committee of the Board of Directors. Stock options granted under the Plans generally have a ten-year term. The exercise price for stock options are at prices at or above the fair market value of the common stock on the date of the grant, and each award of stock options will vest ratably over a specified period, generally three years.

The following table summarizes stock option and restricted stock unit activity for the Plans:


			Stock Options					Restricted Stock Units
	Shares						Weighted Average					Weighted Average
	Available						Exercise Price					Exercise Price
	for Grant			Shares			per Share ($)		Shares			per Share ($)
Balance January 1, 2023	1,080,460			1,363,418		$	62.22		176,594		$	66.32
Authorized	-			-			-		-			-
Granted	(358,463	)		255,620			66.08		102,843			66.01
Exercised/vested	-			(91,604	)		56.82		(46,141	)		64.25
Canceled	58,918			(12,972	)		67.54		(45,946	)		64.33
Balance December 31, 2023	780,915			1,514,462			63.15		187,350			67.15
Authorized	889,000			-			-		-			-
Granted	(299,640	)		196,471			66.72		103,169			66.79
Exercised/vested	-			(279,810	)		55.85		(47,876	)		67.19
Canceled	49,336			(5,487	)		66.76		(43,849	)		67.21
Balance December 31, 2024	1,419,611			1,425,636			65.06		198,794			66.94
Authorized	-			-			-		-			-
Granted	(268,623	)		174,874			76.75		93,749			76.55
Exercised/vested	-			(56,110	)		42.40		(50,146	)		67.38
Canceled	80,912			(28,015	)		70.06		(52,897	)		67.40
Balance December 31, 2025	1,231,900			1,516,385		$	67.16		189,500		$	71.45

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
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-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

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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+ Details

Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2025

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) at December 31 comprised of the following components:


	December 31,
(in millions of dollars)		2025			2024
Cumulative foreign currency translation	$	(360.9	)	$	(399.6	)
Unrecognized pension benefit (net of tax expense of $3.9 in 2025 and $1.2 in 2024)		10.3			1.9
Unrealized gain on cash flow hedges (net of tax expense (benefit) of $(0.1) in 2025 and $0.1 in 2024)		10.2			10.6
Total accumulated other comprehensive loss	$	(340.4	)	$	(387.1	)

Changes in Other Comprehensive Income (Loss) by Component

The following table summarizes the changes in other comprehensive income (loss) by component:


	Year Ended December 31,
	2025									2024									2023
					Tax			Net-of-						Tax			Net-of-						Tax			Net-of-
		Pre-Tax			(Expense)			Tax			Pre-Tax			(Expense)			Tax			Pre-Tax			(Expense)			Tax
(in millions of dollars)		Amount			Benefit			Amount			Amount			Benefit			Amount			Amount			Benefit			Amount
Foreign currency translation adjustment	$	38.5		$	-		$	38.5		$	(49.9	)	$	-		$	(49.9	)	$	(6.1	)	$	-		$	(6.1	)

Pension plans:
Net actuarial gains (losses) and prior service costs arising during the period		10.8			(2.9	)		7.9			39.5			(9.7	)		29.8			5.1			(1.4	)		3.7
Amortization of net actuarial (gains) losses and prior service costs		0.7			(0.2	)		0.5			1.1			(0.3	)		0.8			2.5			(0.6	)		1.9

Unrealized gains (losses) on cash flow hedges		(0.5	)		0.1			(0.4	)		0.4			(0.1	)		0.3			(4.5	)		1.2			(3.3	)

Total other comprehensive income (loss)	$	49.5		$	(3.0	)	$	46.5		$	(8.9	)	$	(10.1	)	$	(19.0	)	$	(3.0	)	$	(0.8	)	$	(3.8	)

Stock-Based Compensation - Weighted Average Assumptions Used to Determine Fair Value for Stock Awards (Details) - Stock Options [Member]	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Stock-Based Compensation [Abstract]
Expected life (in years)	6 years 6 months	6 years 6 months	6 years 4 months 24 days
Interest rate	4.42%	4.06%	3.51%
Volatility	31.78%	31.93%	32.05%
Expected dividend yield	0.57%	0.61%	0.30%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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+ Details

Restructuring and Other Items - Reconciliation of Restructuring Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Restructuring and Other Items [Abstract]
Restructuring liability, beginning of period	$ 2.4	$ 3.8
Additional provisions	5.5	0.0
Cash payments and other	(3.0)	(1.4)
Restructuring liability, end of period	$ 4.9	$ 2.4

Earnings (Loss) Per Share (Details) - Stock Options [Member] - shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings (Loss) Per Share [Abstract]
Options outstanding (in Shares)	1,516,385	1,425,636	1,514,462
Anti-dilutive securities not included in computation of diluted earnings per share (in Shares)	1,188,948	194,412	917,177

Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - Allowance for Doubtful Accounts [Member] - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2025

Dec. 31, 2024

Dec. 31, 2023

Schedule II - Valuation and Qualifying Accounts [Abstract]

Balance at beginning of period

$ 17.1

$ 20.3

$ 15.1

Additions charged to costs, provisions and expenses

4.1

1.4

2.8

Deductions

^[1]

(4.5)

(4.6)

2.4

Balance at end of period

$ 16.7

$ 17.1

$ 20.3

[1]	Includes impact of write-offs, translation of foreign currencies and reclassifications for presentation purposes.

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
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-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column D))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-4

+ Details

Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Parentheticals) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Abstract]
Unrecognized pension, tax expense	$ 3.9	$ 1.2
Unrealized gain on cash flow hedges, tax expense (benefit)	$ (0.1)	$ 0.1

Leases - Future Minimum Lease Payments (Details) $ in Millions	Dec. 31, 2025 USD ($)
Leases [Abstract]
2026	$ 19.0
2027	14.1
2028	10.8
2029	4.9
2030	3.4
Thereafter	6.0
Total undiscounted lease payments	58.2
Less: imputed interest	(7.9)
Present value of lease liability	$ 50.3

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Stock-Based Compensation [Abstract]

Weighted Average Assumptions Used to Determine Fair Value for Stock Awards

The fair value for stock awards was estimated at the date of grant using the Black-Scholes option valuation model with the following weighted average assumptions for the years ended December 31, 2025, 2024 and 2023:


	Year Ended December 31,
		2025		2024		2023
Expected life (in years)		6.5		6.5		6.4
Interest rate		4.42	%	4.06	%	3.51	%
Volatility		31.78	%	31.93	%	32.05	%
Expected dividend yield		0.57	%	0.61	%	0.30	%

Stock Option Activity

The following table summarizes stock option activity for the year ended December 31, 2025:


				Weighted Average	Weighted Average
				Exercise	Remaining		Aggregate Intrinsic
	Awards			Price Per Share	Contractual Life (Years)		Value (Millions)
Awards outstanding at December 31, 2024	1,425,636		$	65.06
Granted	174,874			76.75
Exercised	(56,110	)		42.40
Canceled	(28,015	)		70.06
Expired	-			-
Awards outstanding at December 31, 2025	1,516,385		$	67.16	5.48	$	1.7
Awards exercisable at December 31, 2025	1,149,623		$	65.88	4.57	$	1.7

Non-vested Stock Option Activity

Non-vested stock option activity for the year ended December 31, 2025, is as follows:

				Weighted Average
				Grant Date Fair
	Awards			Value Per Share
Nonvested awards outstanding at December 31, 2024	428,230		$	66.96
Granted	174,874			76.75
Vested	(208,327	)		67.46
Canceled	(28,015	)		70.06
Nonvested awards outstanding at December 31, 2025	366,762		$	71.16

Deferred Restricted Stock Units Activity

The following table summarizes the deferred restricted stock unit activity for the Plan:


				Weighted Average
				Grant Date Fair
	Awards			Value Per Share
Unvested balance at December 31, 2024	198,794		$	66.94
Granted	93,749			76.55
Vested	(50,146	)		67.38
Canceled	(52,897	)		67.40
Unvested balance at December 31, 2025	189,500		$	71.45

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Stock-Based Compensation [Abstract]
Increase in shares available for issuance (in Shares)	0	889,000	0
Share based compensation costs	$ 11.9	$ 11.8	$ 11.3
Stock Options [Member]
Stock-Based Compensation [Abstract]
Term of stock options granted under Plan	10 years
Vesting period	3 years
Share based compensation costs	$ 5.2	5.4	5.2
Tax benefit of share-based compensation	$ 1.4	$ 1.4	$ 1.4
Forfeiture rate assumed	7.43%	7.69%	7.91%
Weighted average grant date fair value for stock options granted (in Dollars per share)	$ 29.74	$ 25.33	$ 25.11
Weighted average grant date fair value for stock options vested (in Dollars per share)	$ 24.9	$ 23.75	$ 21.56
Total intrinsic value of stock options exercised	$ 1.1	$ 7.0	$ 1.0
Closing stock price on last business day of the period (in Dollars per share)	$ 60.95
Weighted average intrinsic value of options exercised (in Dollars per share)	$ 19.74	$ 24.85	$ 7.78
Nonvested Stock Options [Member]
Stock-Based Compensation [Abstract]
Unrecognized stock-based compensation expense	$ 4.7
Weighted average period over which unrecognized stock-based compensation expense is expected to be recognized	3 years
Deferred Restricted Stock Unit [Member]
Stock-Based Compensation [Abstract]
Share based compensation costs	$ 6.6	$ 6.5	$ 6.0
Unrecognized stock-based compensation expense	$ 7.3
Weighted average period over which unrecognized stock-based compensation expense is expected to be recognized	3 years
Granted (in Shares)	93,749	103,169	102,843
Reversals of compensation expense related to restricted stock forfeitures	$ 3.1	$ 2.8	$ 2.7

Goodwill and Other Intangible Assets - Acquired Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Goodwill and Other Intangible Assets [Abstract]
Weighted average useful life	29 years
Gross carrying amount	$ 327.0	$ 324.2
Accumulated amortization	$ 118.3	106.1
Tradenames [Member]
Goodwill and Other Intangible Assets [Abstract]
Weighted average useful life	34 years
Gross carrying amount	$ 221.4	221.5
Accumulated amortization	$ 67.6	63.0
Technology [Member]
Goodwill and Other Intangible Assets [Abstract]
Weighted average useful life	20 years
Gross carrying amount	$ 18.8	18.8
Accumulated amortization	$ 15.5	15.1
Patents and Trademarks [Member]
Goodwill and Other Intangible Assets [Abstract]
Weighted average useful life	19 years
Gross carrying amount	$ 6.4	6.4
Accumulated amortization	$ 6.4	6.4
Customer Relationships [Member]
Goodwill and Other Intangible Assets [Abstract]
Weighted average useful life	21 years
Gross carrying amount	$ 80.4	77.5
Accumulated amortization	$ 28.8	$ 21.6

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2025
Auditor [Table]
Auditor Name	KPMG LLP
Auditor Firm ID	185
Auditor Location	New York, NY

Segment and Related Information

12 Months Ended

Dec. 31, 2025

Segment and Related Information

Note 21. Segment and Related Information

The Company determines its operating segments based on the discrete financial information that is regularly evaluated by its chief operating decision maker, our Chief Executive Officer, in deciding how to allocate resources and in assessing performance. The Company’s operating segments are strategic business units that offer different products and serve different markets. They are managed separately and require different technology and marketing strategies.

The Company has two reportable segments: the Consumer & Specialties segment and the Engineered Solutions segment.

The Consumer & Specialties segment provides technologically enhanced products to consumer-driven end markets, including mineral-to-market household products, as well as specialty additives that become functional components in a variety of consumer and industrial goods. The two product lines in this segment are Household & Personal Care, which delivers minerals-to-market products to a variety of consumer-oriented markets, including pet care, personal care, fabric care, edible oil and renewable fuel purification, animal health, and agricultural, and Specialty Additives, which delivers mineral additives to a variety of consumer and industrial end markets including paper and packaging, food and pharmaceutical, sealants and adhesives, paints and coatings, and plastics.

The Engineered Solutions segment provides advanced process technologies and solutions that are designed to improve our customers' manufacturing processes and projects. The two product lines in this segment are High-Temperature Technologies, which delivers mineral-based blends, technologies, and systems to the foundry, steel, glass, aluminum and other high-temperature processing industries, and Environmental & Infrastructure, which provides environmental, construction, and remediation solutions including geosynthetic clay lining systems, vapor intrusion mitigation products, sub-surface waterproofing systems, green roofs, wastewater remediation, drinking water purification technologies, and drilling products for both the construction and infrastructure markets as well as the oil and gas exploration and production industries.

The accounting policies of the segments are the same as those described in the summary of significant accounting principles. The Company evaluates performance based on the operating income of the respective business units. The costs deducted to arrive at operating profit do not include several items, such as net interest or income tax expense. Depreciation expense related to corporate assets is allocated to the business segments and is included in their income from operations. However, such corporate depreciable assets are not included in the segment assets. Intersegment sales and transfers are not significant.

Segment revenues, expenses, operating income, and a reconciliation of the operating segment totals to the applicable line items on the Consolidated Financial Statements is as follows:


	Year Ended December 31,
	2025								2024
		Consumer &		Engineered						Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions			Total			Specialties		Solutions			Total
Net sales	$	1,097.7	$	974.9		$	2,072.6		$	1,140.2	$	978.3		$	2,118.5
Cost of goods sold		875.3		679.3			1,554.6			890.4		680.4			1,570.8
Segment production margin		222.4		295.6			518.0			249.8		297.9			547.7
Marketing and administrative expenses		75.7		122.8			198.5			71.7		125.8			197.5
Research and development expenses		13.1		9.8			22.9			12.6		10.4			23.0
Restructuring and other items		9.6		3.0			12.6			-		-			-
Gain on sale of assets, net		-		(9.9	)		(9.9	)		-		(12.3	)		(12.3	)
Segment income from operations	$	124.0	$	169.9		$	293.9		$	165.5	$	174.0		$	339.5

	Year Ended December 31,
	2023
		Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions		Total
Net sales	$	1,160.2	$	1,009.7	$	2,169.9
Cost of goods sold		938.5		724.3		1,662.8
Segment production margin		221.7		285.4		507.1
Marketing and administrative expenses		69.2		124.7		193.9
Research and development expenses		11.5		9.7		21.2
Restructuring and other items		0.9		3.2		4.1
Impairment of assets		71.7		-		71.7
Litigation expenses		26.8		-		26.8
Segment income from operations	$	41.6	$	147.8	$	189.4


	Year Ended December 31,
(in millions of dollars)		2025			2024			2023
Segment income from operations	$	293.9		$	339.5		$	189.4
Interest expense, net		(54.5	)		(56.4	)		(59.2	)
Other non-operating deductions, net		(6.9	)		(4.7	)		(4.9	)
Unallocated expenses:
Provision for litigation accrual and credit losses		215.0			30.0			-
Restructuring and other items		2.2			-			2.8
Acquisition-related expenses		-			-			0.3
Litigation expenses		19.6			11.3			2.4
Unallocated corporate expenses		9.7			11.7			12.1
Debt extinguishment expenses		-			(1.8	)		-
Income (loss) before tax and equity in earnings	$	(14.0	)	$	223.6		$	107.7

Segment information for the years ended December 31, 2025, 2024 and 2023 was as follows:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Depreciation, Depletion & Amortization
Consumer & Specialties	$	43.4	$	47.2	$	47.3
Engineered Solutions		47.8		47.7		47.7
Total	$	91.2	$	94.9	$	95.0

Segment Assets
Consumer & Specialties	$	1,333.4	$	1,289.4	$	1,244.8
Engineered Solutions		2,043.9		2,028.0		2,028.5
Corporate		91.7		76.5		73.3
Total	$	3,469.0	$	3,393.9	$	3,346.6

Capital Expenditures
Consumer & Specialties	$	67.6	$	45.2	$	56.8
Engineered Solutions		34.9		39.3		31.2
Corporate		4.6		5.0		5.5
Total	$	107.1	$	89.5	$	93.5

Financial information relating to the Company’s operations by geographic area was as follows:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Net Sales
United States	$	1,075.0	$	1,089.4	$	1,144.0

Canada/Latin America		136.9		151.2		150.2
Europe/Africa		498.5		521.1		525.5
Asia		362.2		356.8		350.2
Total International	$	997.6	$	1,029.1	$	1,025.9
Consolidated net sales	$	2,072.6	$	2,118.5	$	2,169.9

Long-Lived Assets
United States	$	1,845.0	$	1,849.1	$	1,842.0

Canada/Latin America		17.0		14.6		17.7
Europe/Africa		166.5		147.3		157.0
Asia		121.1		110.6		114.7
Total International	$	304.6	$	272.5	$	289.4
Consolidated long-lived assets	$	2,149.6	$	2,121.6	$	2,131.4

Net sales and long-lived assets are attributed to countries and geographic areas based on the location of the legal entity. No individual foreign country represents more than 10% of consolidated net sales or consolidated long-lived assets.

The Company’s net sales by product category are as follows:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Household & Personal Care	$	512.8	$	530.0	$	517.6
Specialty Additives		584.9		610.2		642.6
High-Temperature Technologies		704.7		713.2		720.9
Environmental & Infrastructure		270.2		265.1		288.8
Total net sales	$	2,072.6	$	2,118.5	$	2,169.9

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 12: http://www.xbrl.org/2003/role/exampleRef
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Reference 13: http://www.xbrl.org/2003/role/exampleRef
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Reference 14: http://www.xbrl.org/2003/role/exampleRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Leases

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Leases

Note 2. Leases

The Company determines if an arrangement is a lease at inception. The Company has operating leases for premises, equipment, railcars and automobiles. Our leases have remaining lease terms of 1 year to 45 years, some of which may include options to extend the leases further. The Company considers these options in determining the lease term used to establish the right-of-use assets and lease liabilities. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based upon the information available at commencement date, in determining the present value of lease payments.

Leases with an initial term of 12 months or less are not recorded on the balance sheet. We recognize lease expense for these leases on a straight-line basis over the lease term. Certain lease agreements contain both lease and non-lease components. We account for lease components together with non-lease components.

Operating lease cost was $18.8 million, $17.3 million, and $16.8 million for the years ended December 31, 2025, 2024, and 2023, respectively. The components of lease costs are as follows:


	December 31,
(in millions of dollars)		2025		2024		2023
Operating lease cost	$	18.8	$	17.3	$	16.7
Short-term lease cost		-		-		0.1
Total lease cost	$	18.8	$	17.3	$	16.8

Supplemental cash flow information and non-cash activity related to our leases are as follows:


(in millions of dollars)		December 31,
Operating cash flows information:		2025
Cash paid for amounts included in the measurement of lease liabilities	$	20.0
Non-cash activity:
Right-of-use assets obtained in the exchange for operating lease liabilities	$	13.2

Weighted average remaining lease term and weighted average discount rates related to the Company’s leases were as follows:


Weighted-average remaining operating lease term (in years)	4.88
Weighted-average operating leases discount rate	6.1	%

The following table summarizes the Company’s outstanding lease assets and liabilities and their classification on the Consolidated Balance Sheets:


			December 31,
(in millions of dollars)	Balance Sheet Classification			2025		2024
Right-of-use asset		Other assets and deferred charges	$	45.2	$	46.9
Lease liability - current		Other current liabilities		16.5		14.5
Lease liability - non-current		Other non-current liabilities		33.8		38.7

Future minimum lease payments under the Company’s leases as of December 31, 2025, were as follows:


		December 31,
(in millions of dollars)		2025
2026	$	19.0
2027		14.1
2028		10.8
2029		4.9
2030		3.4
Thereafter		6.0
Total undiscounted lease payments		58.2
Less: imputed interest		(7.9	)
Present Value of Lease Liability	$	50.3

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets attributable to:
Accrued liabilities	$ 62.3	$ 31.4
Net operating loss carry forwards	17.6	23.2
Pension and postretirement benefits costs	0.0	2.9
Interest	17.0	16.2
Research and development capitalization	12.6	11.0
Valuation allowance	(15.1)	(20.6)
Other	10.8	13.3
Total deferred tax assets	105.2	77.4
Deferred tax liabilities attributable to:
Plant and equipment, principally due to differences in depreciation	124.8	138.0
Intangible assets	45.9	49.5
Pension and postretirement benefits costs	1.6	0.0
Other	8.4	5.6
Total deferred tax liabilities	180.7	193.1
Net deferred tax liability, long-term	(75.5)	(115.7)
Net deferred tax asset, long-term	15.2	14.8
Net deferred tax liability, long-term	$ 90.7	$ 130.5

Benefit Plans - Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Pension Benefits [Member]
Benefit Plans [Abstract]
Current year actuarial gain	$ 7.8	$ 29.7
Amortization of actuarial (gain) loss	0.8	1.1
Total recognized in other comprehensive income	8.6	30.8
Postretirement Benefits [Member]
Benefit Plans [Abstract]
Current year actuarial gain	0.1	0.1
Amortization of actuarial (gain) loss	(0.3)	(0.3)
Total recognized in other comprehensive income	$ (0.2)	$ (0.2)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Segment and Related Information - Net Sales by Product Category (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment and Related Information [Abstract]
Net sales	$ 2,072.6	$ 2,118.5	$ 2,169.9
Household & Personal Care [Member]
Segment and Related Information [Abstract]
Net sales	512.8	530.0	517.6
Specialty Additives [Member]
Segment and Related Information [Abstract]
Net sales	584.9	610.2	642.6
High-Temperature Technologies [Member]
Segment and Related Information [Abstract]
Net sales	704.7	713.2	720.9
Environmental & Infrastructure [Member]
Segment and Related Information [Abstract]
Net sales	$ 270.2	$ 265.1	$ 288.8

- Definition

+ References

+ Details

Derivative Financial Instruments and Hedging Activities	12 Months Ended
Derivative Financial Instruments and Hedging Activities	Dec. 31, 2025
Derivative Financial Instruments and Hedging Activities [Abstract]
Derivative Financial Instruments and Hedging Activities	Note 12. Derivative Financial Instruments and Hedging Activities As a multinational corporation with operations throughout the world, the Company is exposed to certain market risks. The Company uses a variety of practices to manage these market risks, including, when considered appropriate, derivative financial instruments. The Company’s objective is to offset gains and losses resulting from interest rates and foreign currency exposures with gains and losses on the derivative contracts used to hedge them. The Company uses derivative financial instruments only for risk management and not for trading or speculative purposes. By using derivative financial instruments to hedge exposures to changes in interest rates and foreign currencies, the Company exposes itself to credit risk and market risk. Credit risk is the risk that the counterparty will fail to perform under the terms of the derivative contract. When the fair value of a derivative contract is positive, the counterparty owes the Company, which creates credit risk for the Company. When the fair value of a derivative contract is negative, the Company owes the counterparty, and therefore, it does not face any credit risk. The Company minimizes the credit risk in derivative instruments by entering into transactions with major financial institutions. Market risk is the adverse effect on the value of a financial instrument that results from a change in interest rates, currency exchange rates, or commodity prices. The market risk associated with interest rate and forward exchange contracts is managed by establishing and monitoring parameters that limit the types and degree of market risk that may be undertaken. Cash Flow Hedges For derivative instruments that are designated and qualify as cash flow hedges, the Company records the effective portion of the gain or loss in accumulated other comprehensive income (loss) as a separate component of shareholders’ equity. The Company subsequently reclassifies the effective portion of gain or loss into earnings in the period during which the hedged transaction is recognized in earnings. The Company utilizes interest rate swaps to limit exposure to market fluctuations on floating-rate debt. In the second quarter of 2023, the Company entered into a floating to fixed interest rate swap for a notional amount of $150 million. The fair value of this swap is a liability of $0.2 million at December 31, 2025, and is recorded in other current liabilities on the Consolidated Balance Sheets. This interest rate swap is designated as a cash flow hedge. As a result, the gains and losses associated with this interest rate swap are recorded in accumulated other comprehensive income (loss). Other The Company is exposed to potential gains or losses from foreign currency fluctuations affecting net investments and earnings denominated in foreign currencies. The Company is particularly sensitive to currency exchange rate fluctuations for the following currencies: British pound sterling (GBP), Chinese renminbi (CNY), Euro, Malaysian ringgit (MYR), Polish zloty (PLN), South African Rand (ZAR), Thai baht (THB), and Turkish lira (TRY). When considered appropriate, the Company enters into foreign exchange derivative contracts to mitigate the risk of fluctuations on these exposures. The Company does not designate these contracts for hedge accounting treatment and the changes in fair value of these contracts are recorded in earnings. The Company recorded gains (losses) of $0.4 million, $(0.1) million, and $(0.1) million in other non-operating income (deductions), net within the Consolidated Statements of Income (Loss) for the years ended 2025, 2024, and 2023, respectively. There were no open contracts at December 31, 2025 and December 31, 2024.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

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+ Details

Accounting for Asset Retirement Obligations - Reconciliation of Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Accounting for Asset Retirement Obligations [Abstract]
Asset retirement obligation, beginning of period	$ 27.6	$ 20.8
Accretion expense	2.6	1.6
Other	3.7	6.5
Payments	(6.9)	(0.8)
Foreign currency translation	0.3	(0.5)
Asset retirement obligation, end of period	$ 27.3	$ 27.6

Benefit Plans - Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost and Benefit Obligations (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Benefit Plans [Abstract]
Discount rate	5.27%	5.16%	4.84%
Expected return on plan assets	6.64%	6.59%	6.53%
Rate of compensation increase	2.75%	2.75%	2.77%
Interest crediting rate	3.75%	3.75%	2.25%
Discount rate	5.20%	4.75%	4.63%
Rate of compensation increase	2.75%	2.75%	2.76%

Benefit Plans - Defined Benefit Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Benefit Plans [Abstract]
Fair value of plan assets	$ 369.9	$ 341.3
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	307.0	288.0
Significant Other Observable Inputs (Level 2) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	17.5	13.9
Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	5.7	5.5
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Benefit Plans [Abstract]
Fair value of plan assets	330.2	307.4
Pension plan assets at NAV [Member]
Benefit Plans [Abstract]
Fair value of plan assets	39.7	33.9
U.S. Equities [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	184.8	167.2
U.S. Equities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
U.S. Equities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
U.S. Equities [Member] \| Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Benefit Plans [Abstract]
Fair value of plan assets	184.8	167.2
Non-U.S. Equities [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	22.5	21.5
Non-U.S. Equities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
Non-U.S. Equities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
Non-U.S. Equities [Member] \| Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Benefit Plans [Abstract]
Fair value of plan assets	22.5	21.5
Corporate Debt Instruments [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	99.3	98.9
Corporate Debt Instruments [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	17.5	13.9
Corporate Debt Instruments [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
Corporate Debt Instruments [Member] \| Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Benefit Plans [Abstract]
Fair value of plan assets	116.8	112.8
Real Estate [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.3	0.3
Real Estate [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.3	0.3
Real Estate [Member] \| Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.3	0.3
Other [Member]
Benefit Plans [Abstract]
Fair value of plan assets	45.5	39.5
Other [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.4	0.4
Other [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	0.0	0.0
Other [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value of plan assets	5.4	5.2
Other [Member] \| Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Benefit Plans [Abstract]
Fair value of plan assets	$ 5.8	$ 5.6

Restructuring and Other Items (Tables)

12 Months Ended

Dec. 31, 2025

Restructuring and Other Items [Abstract]

Restructuring Charges by Segment

The following table outlines the amount of restructuring charges recorded within the Consolidated Statements of Income (Loss) and the segments they relate to:


	Year Ended December 31, 2025
(in millions of dollars)		2025		2024		2023
Asset Write-Downs
Consumer & Specialties	$	3.0	$	-	$	71.7
Engineered Solutions		1.7		-		-
Total asset write-down charges	$	4.7	$	-	$	71.7

Severance and other employee costs
Consumer & Specialties	$	6.5	$	-	$	0.9
Engineered Solutions		1.6		-		3.2
Corporate		2.2		-		2.8
Total severance and other employee costs	$	10.3	$	-	$	6.9

Total restructuring and other items	$	15.0	$	-	$	78.6

Reconciliation of Restructuring Liability

The following table is a reconciliation of our restructuring liability balance as of December 31, 2025 and 2024:


	December 31,
(in millions of dollars)		2025			2024
Restructuring liability, beginning of period	$	2.4		$	3.8
Additional provisions		5.5			-
Cash payments and other		(3.0	)		(1.4	)
Restructuring liability, end of period	$	4.9		$	2.4

Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment Information

Segment revenues, expenses, operating income, and a reconciliation of the operating segment totals to the applicable line items on the Consolidated Financial Statements is as follows:


	Year Ended December 31,
	2025								2024
		Consumer &		Engineered						Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions			Total			Specialties		Solutions			Total
Net sales	$	1,097.7	$	974.9		$	2,072.6		$	1,140.2	$	978.3		$	2,118.5
Cost of goods sold		875.3		679.3			1,554.6			890.4		680.4			1,570.8
Segment production margin		222.4		295.6			518.0			249.8		297.9			547.7
Marketing and administrative expenses		75.7		122.8			198.5			71.7		125.8			197.5
Research and development expenses		13.1		9.8			22.9			12.6		10.4			23.0
Restructuring and other items		9.6		3.0			12.6			-		-			-
Gain on sale of assets, net		-		(9.9	)		(9.9	)		-		(12.3	)		(12.3	)
Segment income from operations	$	124.0	$	169.9		$	293.9		$	165.5	$	174.0		$	339.5

	Year Ended December 31,
	2023
		Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions		Total
Net sales	$	1,160.2	$	1,009.7	$	2,169.9
Cost of goods sold		938.5		724.3		1,662.8
Segment production margin		221.7		285.4		507.1
Marketing and administrative expenses		69.2		124.7		193.9
Research and development expenses		11.5		9.7		21.2
Restructuring and other items		0.9		3.2		4.1
Impairment of assets		71.7		-		71.7
Litigation expenses		26.8		-		26.8
Segment income from operations	$	41.6	$	147.8	$	189.4

Segment information for the years ended December 31, 2025, 2024 and 2023 was as follows:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Depreciation, Depletion & Amortization
Consumer & Specialties	$	43.4	$	47.2	$	47.3
Engineered Solutions		47.8		47.7		47.7
Total	$	91.2	$	94.9	$	95.0

Segment Assets
Consumer & Specialties	$	1,333.4	$	1,289.4	$	1,244.8
Engineered Solutions		2,043.9		2,028.0		2,028.5
Corporate		91.7		76.5		73.3
Total	$	3,469.0	$	3,393.9	$	3,346.6

Capital Expenditures
Consumer & Specialties	$	67.6	$	45.2	$	56.8
Engineered Solutions		34.9		39.3		31.2
Corporate		4.6		5.0		5.5
Total	$	107.1	$	89.5	$	93.5

Reconciliation of Segment Income to Consolidated


	Year Ended December 31,
(in millions of dollars)		2025			2024			2023
Segment income from operations	$	293.9		$	339.5		$	189.4
Interest expense, net		(54.5	)		(56.4	)		(59.2	)
Other non-operating deductions, net		(6.9	)		(4.7	)		(4.9	)
Unallocated expenses:
Provision for litigation accrual and credit losses		215.0			30.0			-
Restructuring and other items		2.2			-			2.8
Acquisition-related expenses		-			-			0.3
Litigation expenses		19.6			11.3			2.4
Unallocated corporate expenses		9.7			11.7			12.1
Debt extinguishment expenses		-			(1.8	)		-
Income (loss) before tax and equity in earnings	$	(14.0	)	$	223.6		$	107.7

Financial Information Related to Operations by Geographic Area

Financial information relating to the Company’s operations by geographic area was as follows:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Net Sales
United States	$	1,075.0	$	1,089.4	$	1,144.0

Canada/Latin America		136.9		151.2		150.2
Europe/Africa		498.5		521.1		525.5
Asia		362.2		356.8		350.2
Total International	$	997.6	$	1,029.1	$	1,025.9
Consolidated net sales	$	2,072.6	$	2,118.5	$	2,169.9

Long-Lived Assets
United States	$	1,845.0	$	1,849.1	$	1,842.0

Canada/Latin America		17.0		14.6		17.7
Europe/Africa		166.5		147.3		157.0
Asia		121.1		110.6		114.7
Total International	$	304.6	$	272.5	$	289.4
Consolidated long-lived assets	$	2,149.6	$	2,121.6	$	2,131.4

Net Sales by Product Category

The Company’s net sales by product category are as follows:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Household & Personal Care	$	512.8	$	530.0	$	517.6
Specialty Additives		584.9		610.2		642.6
High-Temperature Technologies		704.7		713.2		720.9
Environmental & Infrastructure		270.2		265.1		288.8
Total net sales	$	2,072.6	$	2,118.5	$	2,169.9

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Stockholders' Equity - Stock Option and Restricted Stock Unit Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Stockholders’ Equity [Abstract]
Balance, beginning of year (in Shares)	1,419,611	780,915	1,080,460
Authorized (in Shares)	0	889,000	0
Granted (in Shares)	(268,623)	(299,640)	(358,463)
Exercised/vested (in Shares)	0	0	0
Canceled (in Shares)	80,912	49,336	58,918
Balance, end of year (in Shares)	1,231,900	1,419,611	780,915
Stock Options [Member]
Stockholders’ Equity [Abstract]
Balance, beginning of year (in Shares)	1,425,636	1,514,462	1,363,418
Weighted average exercise price per share, beginning of year (in Dollars per share)	$ 65.06	$ 63.15	$ 62.22
Granted (in Shares)	174,874	196,471	255,620
Granted (in Dollars per share)	$ 76.75	$ 66.72	$ 66.08
Exercised/vested (in Shares)	(56,110)	(279,810)	(91,604)
Exercised/vested (in Dollars per share)	$ 42.4	$ 55.85	$ 56.82
Canceled (in Shares)	(28,015)	(5,487)	(12,972)
Canceled (in Dollars per share)	$ 70.06	$ 66.76	$ 67.54
Balance, end of year (in Shares)	1,516,385	1,425,636	1,514,462
Weighted average exercise price per share, end of year (in Dollars per share)	$ 67.16	$ 65.06	$ 63.15
Restricted Stock Units [Member]
Stockholders’ Equity [Abstract]
Balance, beginning of year (in Shares)	198,794	187,350	176,594
Weighted average exercise price per share, beginning of year (in Dollars per share)	$ 66.94	$ 67.15	$ 66.32
Granted (in Shares)	93,749	103,169	102,843
Granted (in Dollars per share)	$ 76.55	$ 66.79	$ 66.01
Exercised/vested (in Shares)	(50,146)	(47,876)	(46,141)
Exercised/vested (in Dollars per share)	$ 67.38	$ 67.19	$ 64.25
Canceled (in Shares)	(52,897)	(43,849)	(45,946)
Canceled (in Dollars per share)	$ 67.4	$ 67.21	$ 64.33
Balance, end of year (in Shares)	189,500	198,794	187,350
Weighted average exercise price per share, end of year (in Dollars per share)	$ 71.45	$ 66.94	$ 67.15

Stock-Based Compensation

12 Months Ended

Dec. 31, 2025

Stock-Based Compensation [Abstract]

Stock-Based Compensation

Note 6. Stock-Based Compensation

The Company’s 2015 Stock Award and Incentive Plan provides for grants of incentive and non-qualified stock options, restricted stock, restricted stock units, stock appreciation rights, stock awards, and performance unit awards (the 2015 Stock Award and Incentive Plan, as amended, referred to herein as the “Plan” and together with its predecessor for awards granted prior to May 2015, the 2001 Stock Award and Incentive Plan, as amended and restated, the “Plans”). At the Company's 2024 Annual Meeting of Stockholders, the Company's stockholders ratified the adoption of an amendment and restatement of the Plan, which increased the number of shares available for issuance pursuant to the Plan by 889,000 shares and removed certain individual award limits in light of recent tax law changes. The Plans are administered by the Compensation Committee of the Board of Directors. Stock options granted under the Plans generally have a ten year term. The exercise price for stock options are at prices at or above the fair market value of the common stock on the date of the grant, and each award of stock options will vest ratably over a specified period, generally three years.

Stock-based compensation expense is recognized in the consolidated financial statements for stock options based on the grant date fair value.

Net income for the years ended 2025, 2024, and 2023 include $5.2 million, $5.4 million, and $5.2 million pre-tax compensation costs, respectively, related to stock option expense as a component of marketing and administrative expenses. All stock option expense is recognized in the Consolidated Statements of Income (Loss). The related tax benefit included in the Consolidated Statements of Income (Loss) on the non-qualified stock options was $1.4 million, for all periods ended 2025, 2024, and 2023, respectively.

Stock Options

The fair value of options granted is estimated on the date of grant using the Black-Scholes valuation model. Compensation expense is recognized only for those options expected to vest, with forfeitures estimated at the date of grant based on the Company’s historical experience and future expectations. The forfeiture rate assumption used for the periods ended December 31, 2025, 2024, and 2023 was 7.43%, 7.69%, and 7.91%, respectively.

The weighted average grant date fair value for stock options granted during the years ended December 31, 2025, 2024, and 2023 was $29.74, $25.33, and $25.11, respectively. The weighted average grant date fair value for stock options vested during 2025, 2024, and 2023 was $24.90, $23.75, and $21.56, respectively. The total intrinsic value of stock options exercised during the years ended December 31, 2025, 2024, and 2023 was $1.1 million, $7.0 million, and $1.0 million, respectively.


	Year Ended December 31,
		2025		2024		2023
Expected life (in years)		6.5		6.5		6.4
Interest rate		4.42	%	4.06	%	3.51	%
Volatility		31.78	%	31.93	%	32.05	%
Expected dividend yield		0.57	%	0.61	%	0.30	%

The expected term of the options represents the estimated period of time until exercised and is based on historical experience of similar awards, based upon contractual terms, vesting schedules, and expectations of future employee behavior. The expected stock-price volatility is based upon the historical and implied volatility of the Company’s stock. The interest rate is based upon the implied yield on U.S. Treasury bills with an equivalent remaining term. Estimated dividend yield is based upon historical dividends paid by the Company.

The following table summarizes stock option activity for the year ended December 31, 2025:


				Weighted Average	Weighted Average
				Exercise	Remaining		Aggregate Intrinsic
	Awards			Price Per Share	Contractual Life (Years)		Value (Millions)
Awards outstanding at December 31, 2024	1,425,636		$	65.06
Granted	174,874			76.75
Exercised	(56,110	)		42.40
Canceled	(28,015	)		70.06
Expired	-			-
Awards outstanding at December 31, 2025	1,516,385		$	67.16	5.48	$	1.7
Awards exercisable at December 31, 2025	1,149,623		$	65.88	4.57	$	1.7

The aggregate intrinsic value above is calculated before applicable income taxes, based on the Company’s closing stock price of $60.95 as of the last business day of the period ended December 31, 2025, had all options been exercised on that date. The weighted average intrinsic value of the options exercised during 2025, 2024, and 2023 was $19.74, $24.85, and $7.78 per share, respectively. As of December 31, 2025, total unrecognized stock-based compensation expense related to non-vested stock options was approximately $4.7 million, which is expected to be recognized over a weighted average period of approximately three years.

The Company issues new shares of common stock upon the exercise of stock options.

Non-vested stock option activity for the year ended December 31, 2025, is as follows:

				Weighted Average
				Grant Date Fair
	Awards			Value Per Share
Nonvested awards outstanding at December 31, 2024	428,230		$	66.96
Granted	174,874			76.75
Vested	(208,327	)		67.46
Canceled	(28,015	)		70.06
Nonvested awards outstanding at December 31, 2025	366,762		$	71.16

Deferred Restricted Stock Units

The Company has granted key employees units consisting of rights to receive shares of the Company’s common stock pursuant to the Plans. The rights will be deferred for a specified number of years of service, subject to restrictions on transfer and other conditions. Compensation expense for these shares is recognized over the vesting period. The Company granted units consisting of rights to receive 93,749 shares, 103,169 shares, and 102,843 shares during the periods ended December 31, 2025, 2024, and 2023, respectively. The fair value was determined based on the market value of unrestricted shares. As of December 31, 2025, there was unrecognized stock-based compensation related to deferred restricted stock units of $7.3 million, which will be recognized over approximately the next three years. The compensation expense amortized with respect to all units was approximately $6.6 million, $6.5 million, and $6.0 million for the periods ended December 31, 2025, 2024, and 2023, respectively. In addition, the Company recorded reversals of $3.1 million, $2.8 million, and $2.7 million for periods ended December 31, 2025, 2024, and 2023, respectively, related mostly to the conversion of units for tax withholding purposes. Such costs and reversals are included in marketing and administrative expenses.

The following table summarizes the deferred restricted stock unit activity for the Plan:


				Weighted Average
				Grant Date Fair
	Awards			Value Per Share
Unvested balance at December 31, 2024	198,794		$	66.94
Granted	93,749			76.55
Vested	(50,146	)		67.38
Canceled	(52,897	)		67.40
Unvested balance at December 31, 2025	189,500		$	71.45

Revenue from Contracts with Customers - Disaggregation of Revenue by Product Line (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue from Contracts with Customers [Abstract]
Net sales	$ 2,072.6	$ 2,118.5	$ 2,169.9
Household & Personal Care [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	512.8	530.0	517.6
Specialty Additives [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	584.9	610.2	642.6
High-Temperature Technologies [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	704.7	713.2	720.9
Environmental & Infrastructure [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	270.2	265.1	288.8
Consumer & Specialties [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	1,097.7	1,140.2	1,160.2
Consumer & Specialties [Member] \| Household & Personal Care [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	512.8	530.0	517.6
Consumer & Specialties [Member] \| Specialty Additives [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	584.9	610.2	642.6
Engineered Solutions [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	974.9	978.3	1,009.7
Engineered Solutions [Member] \| High-Temperature Technologies [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	704.7	713.2	720.9
Engineered Solutions [Member] \| Environmental & Infrastructure [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	$ 270.2	$ 265.1	$ 288.8

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

Reference 3: http://www.xbrl.org/2003/role/exampleRef
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-URI https://asc.fasb.org/1943274/2147479777/606-10-55-91

Reference 4: http://www.xbrl.org/2003/role/exampleRef
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Reference 9: http://www.xbrl.org/2003/role/exampleRef
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-URI https://asc.fasb.org/1943274/2147479777/606-10-55-91

Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2025

Fair Value of Financial Instruments [Abstract]

Fair Value of Financial Assets and Liabilities on a Recurring Basis


(in millions of dollars)				Fair Value Measurements Using
		Asset /			Quoted Prices in		Significant			Significant
		(Liability)			Active Markets for		Other Observable			Unobservable
		Balance at			Identical Assets		Inputs			Inputs
Description		December 31, 2025			(Level 1)		(Level 2)			(Level 3)
Deferred compensation plan assets	$	13.9		$	-	$	13.9		$	-

Supplementary pension plan assets		40.1			-		40.1			-

Interest rate swap		(0.2	)		-		(0.2	)		-


			Fair Value Measurements Using
		Asset /		Quoted Prices in		Significant		Significant
		(Liability)		Active Markets for		Other Observable		Unobservable
		Balance at		Identical Assets		Inputs		Inputs
Description		December 31, 2024		(Level 1)		(Level 2)		(Level 3)
Deferred compensation plan assets	$	13.6	$	-	$	13.6	$	-

Supplementary pension plan assets		19.4		-		19.4		-

Interest rate swap		0.3		-		0.3		-

Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Abstract]
Operating loss carry forwards	$ 17.6	$ 23.2
Operating loss carryforwards subject to expiration	$ 12.2
Expiration period of operating loss carryforwards	20 years
Operating loss carryforwards not subject to expiration	$ 5.4
Unrecognized tax benefits	1.8	$ 1.9	$ 2.8
Unrecognized tax benefits that would impact effective tax rate if recognized	1.2
Unrecognized tax benefits, accrued interest and penalties	0.4
Foreign subsidiaries' undistributed earnings	516.3
Deferred tax liabilities with respect to foreign withholding taxes or state taxes have been recognized	$ 0.0

Accounting for Asset Retirement Obligations (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 29, 2024	Dec. 31, 2025
Accounting for Asset Retirement Obligations [Abstract]
Additions to asset retirement obligations	$ 7.0
Asset retirement obligation, current portion		$ 0.7
Asset retirement obligation, noncurrent portion		$ 26.6

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
CONSOLIDATED BALANCE SHEETS [Abstract]
Preferred stock, shares authorized (in Shares)	1,000,000	1,000,000
Preferred stock, shares issued (in Shares)	0	0
Common stock, par value (in Dollars per share)	$ 0.1	$ 0.1
Common stock, shares authorized (in Shares)	100,000,000	100,000,000
Common stock, shares issued (in Shares)	50,099,919	49,993,737
Common stock held in treasury, shares (in Shares)	19,065,813	18,098,082

Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
Benefit Plans (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Benefit Plans [Abstract]
Employee vesting period for defined benefit plans	5 years
Percentage of total benefit obligation represented by international pension plans	20.00%
Accumulated benefit obligation (in Dollars)	$ 334.7	$ 327.5
Actual return on pension assets	10.00%	10.00%	11.00%
Maximum health care cost trend rate	5.00%
Average rate of return on assets	9.00%
Company's contributions to employee voluntary savings and investment plan (in Dollars)	$ 6.7	$ 6.4	$ 6.2
Significant Unobservable Inputs (Level 3) [Member]
Benefit Plans [Abstract]
Fair value, assets, Level 3 transfers in, amount (in Dollars)	0.0	0.0
Fair value, assets, Level 3 transfers out, amount (in Dollars)	$ 0.0	$ 0.0
Equity Securities [Member] \| Minimum [Member]
Benefit Plans [Abstract]
Target long-term investment portfolio mix	55.00%
Equity Securities [Member] \| Maximum [Member]
Benefit Plans [Abstract]
Target long-term investment portfolio mix	65.00%
Fixed Income Securities [Member] \| Minimum [Member]
Benefit Plans [Abstract]
Target long-term investment portfolio mix	30.00%
Fixed Income Securities [Member] \| Maximum [Member]
Benefit Plans [Abstract]
Target long-term investment portfolio mix	35.00%
Other Securities [Member] \| Minimum [Member]
Benefit Plans [Abstract]
Target long-term investment portfolio mix	0.00%
Other Securities [Member] \| Maximum [Member]
Benefit Plans [Abstract]
Target long-term investment portfolio mix	15.00%
Pension Benefits [Member]
Benefit Plans [Abstract]
Expected company contribution in 2026 (in Dollars)	$ 10.8
Postretirement Benefits [Member]
Benefit Plans [Abstract]
Expected company contribution in 2026 (in Dollars)	$ 0.1

Property, Plant, and Equipment - Major Categories of Property, Plant, and Equipment and Accumulated Depreciation and Depletion (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	$ 2,308.9	$ 2,236.6
Less: accumulated depreciation and depletion	(1,283.9)	(1,246.9)
Property, plant and equipment, net	1,025.0	989.7
Mineral Rights and Reserves [Member]
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	560.9	560.0
Land [Member]
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	48.9	43.0
Buildings [Member]
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	211.9	202.0
Machinery and Equipment [Member]
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	1,272.9	1,236.4
Furniture and Fixtures and Other [Member]
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	155.2	144.5
Construction in Progress [Member]
Property, Plant, and Equipment [Abstract]
Property, plant and equipment, gross	$ 59.1	$ 50.7

Acquisitions (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
Acquisitions (Details) - USD ($) $ in Millions	Apr. 29, 2022	Jun. 30, 2024	Jul. 02, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Acquisitions [Abstract]
Cash paid for acquisition of business				$ 0.0	$ 4.0	$ 1.8
Goodwill				915.9	913.8	913.6
Acquisition-related expenses				$ 0.0	$ 0.0	$ 0.3
Concept Pet [Member]
Acquisitions [Abstract]
Purchase price	$ 28.0
Cash paid for acquisition of business	22.4	$ 4.0	$ 1.8
Goodwill	9.3
Intangible assets	$ 4.3

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Income Taxes - Cash Paid for Income Taxes, Net of Refunds (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($)
Income Taxes [Abstract]
U.S. - Federal	$ 18.0
U.S. - State	3.2
Brazil [Member]
Income Taxes [Abstract]
Foreign	6.7
Canada [Member]
Income Taxes [Abstract]
Foreign	3.9
China [Member]
Income Taxes [Abstract]
Foreign	12.3
Turkey [Member]
Income Taxes [Abstract]
Foreign	8.6
All Other Countries [Member]
Income Taxes [Abstract]
Foreign	16.1
Total income taxes paid, net	$ 68.8

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Other Intangible Assets [Abstract]

Goodwill

The balance of goodwill by reporting unit and the activity occurring in the past two fiscal years is as follows:


		Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions			Consolidated
Balance at December 31, 2023	$	345.2	$	568.4		$	913.6

Change in goodwill relating to:
Foreign exchange translation		0.5		(0.3	)		0.2
Total Changes	$	0.5	$	(0.3	)	$	0.2

Balance at December 31, 2024	$	345.7	$	568.1		$	913.8

Change in goodwill relating to:
Foreign exchange translation		1.5		0.6			2.1
Total Changes	$	1.5	$	0.6		$	2.1

Balance at December 31, 2025	$	347.2	$	568.7		$	915.9

Acquired Intangible Assets Subject to Amortization

Acquired intangible assets subject to amortization as of December 31, 2025 and December 31, 2024 were as follows:


		December 31, 2025				December 31, 2024
		(in millions of dollars)				(in millions of dollars)
	Weighted Average		Gross				Gross
	Useful Life		Carrying		Accumulated		Carrying		Accumulated
	(Years)		Amount		Amortization		Amount		Amortization
Tradenames	34	$	221.4	$	67.6	$	221.5	$	63.0
Technology	20		18.8		15.5		18.8		15.1
Patents and trademarks	19		6.4		6.4		6.4		6.4
Customer relationships	21		80.4		28.8		77.5		21.6
	29	$	327.0	$	118.3	$	324.2	$	106.1

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
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-Name Accounting Standards Codification
-Section 50
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-Subparagraph (c)
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-2

+ Details

Contingencies - Case Activity Related to Talc Products Previously Sold by Oldco (Details) - Talc-Related Claims [Member] - Claim	3 Months Ended		12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Contingencies [Abstract]
Claims pending, beginning of period	840	663	684	574
Claims filed	135	44	346	162
Less: Claims dismissed, settled, or otherwise resolved	61	23	116	52
Claims pending, end of period	914	684	914	684

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Income Taxes [Abstract]

Income (Loss) from Operations Before Provision for Taxes by Domestic and Foreign Source

Income (loss) from operations before provision for taxes by domestic and foreign source is as follows:


	Year Ended December 31,
(in millions of dollars)		2025			2024		2023
Income (loss) from operations before income taxes and income from affiliates
and joint ventures:
Domestic	$	(172.4	)	$	40.7	$	(38.9	)
Foreign		158.4			182.9		146.6
	$	(14.0	)	$	223.6	$	107.7

Provision (Benefit) for Taxes on Income

Upon adoption of ASU 2023-09, "Improvements to Income Tax Disclosures" (see Note 1), the provision (benefit) for taxes on income consists of the following:


		Year Ended
		December 31,
(in millions of dollars)		2025
Current Tax Expense (Benefit)
U.S. Federal	$	5.8
U.S. State and local		3.6
Foreign		41.3
Total current tax expense (benefit)		50.7

Deferred Tax Expense (Benefit)
U.S. Federal		(32.9	)
U.S. State and local		(8.7	)
Foreign		(4.2	)
Total deferred tax expense (benefit)		(45.8	)

Total Income Tax Expense (Benefit)
U.S. Federal		(27.1	)
U.S. State and local		(5.1	)
Foreign		37.1
Total income tax expense (benefit)	$	4.9

The provision (benefit) for taxes on income prior to adoption of ASU 2023-09 consists of the following:


(in millions of dollars)	Year Ended December 31,
Domestic		2024			2023
Taxes currently payable
Federal	$	20.0		$	9.5
State and local		2.8			6.7
Deferred income taxes		(12.3	)		(31.5	)
Domestic tax provision (benefit)		10.5			(15.3	)

Foreign
Taxes currently payable		44.2			42.2
Deferred income taxes		4.7			(3.2	)
Foreign tax provision		48.9			39.0
Total tax provision	$	59.4		$	23.7

Reconciliation of Statutory to Effective Federal Tax Rate


	Year Ended December 31,
		2025
			Amount (in millions)		Effective Tax Rate %
Net income (loss) before tax and equity in earnings		$	(14.0	)
U.S. federal statutory tax rate			(2.9	)	21.0	%
State and local income taxes, net of federal income tax effect			(3.0	)	21.8	%
Foreign tax effects
Brazil
Effects of rates different than statutory			2.2		(16.1	)%
Other adjustments			(0.1	)	0.6	%
China			2.7		(19.5	)%
Other foreign jurisdictions			0.8		(5.9	)%
Effect of cross-border tax laws
Global Intangible Low-Tax Income (GILTI)			3.6		(25.4	)%
Foreign Derived Intangible Income (FDII)			(0.8	)	5.5	%
Other adjustments			0.3		(2.5	)%
Tax credits			(0.1	)	0.7	%
Nontaxable or nondeductible items
Debtor-In-Possession Credit Agreement			10.5		(75.2	)%
Depletion			(8.4	)	60.1	%
Section 162(m)			1.5		(10.7	)%
Previously taxed income - Foreign exchange loss			(3.0	)	21.3	%
Other permanent differences			1.6		(11.1	)%
Changes in unrecognized tax benefits			(0.1	)	1.0	%
Other adjustments			0.1		(0.6	)%
Consolidated effective tax rate		$	4.9		(35.0	)%


	Year Ended December 31,
		2024		2023
U.S. statutory rate		21.0	%	21.0	%

Depletion		(4.4	)%	(10.3	)%
Difference between tax provided on foreign earnings and the U.S. statutory rate		4.7	%	7.7	%
GILTI		0.1	%	1.0	%
FDII		(1.0	)%	(2.5	)%
State and local taxes, net of federal tax benefit		1.4	%	(0.1	)%
Tax credits		(0.7	)%	(0.6	)%
Bankruptcy Funding		3.1	%	0.0	%
Impact of uncertain tax positions		(0.3	)%	0.2	%
Impact of officer's non-deductible compensation		1.1	%	1.9	%
Foreign Withholding tax		0.8	%	2.0	%
Other		0.8	%	1.7	%
Consolidated effective tax rate		26.6	%	22.0	%

Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:


	December 31,
(in millions of dollars)		2025			2024
Deferred tax assets attributable to:
Accrued liabilities	$	62.3		$	31.4
Net operating loss carry forwards		17.6			23.2
Pension and postretirement benefits costs		-			2.9
Interest		17.0			16.2
Research and development capitalization		12.6			11.0
Valuation allowance		(15.1	)		(20.6	)
Other		10.8			13.3
Total deferred tax assets		105.2			77.4
Deferred tax liabilities attributable to:
Plant and equipment, principally due to differences in depreciation		124.8			138.0
Intangible assets		45.9			49.5
Pension and postretirement benefits costs		1.6			-
Other		8.4			5.6
Total deferred tax liabilities		180.7			193.1
Net deferred tax liability	$	(75.5	)	$	(115.7	)

Net deferred tax assets and net deferred tax liabilities are classified as follows:


	December 31,
(in millions of dollars)		2025			2024
Net deferred tax asset, long-term	$	15.2		$	14.8
Net deferred tax liability, long-term		90.7			130.5
Net deferred tax liability, long-term	$	(75.5	)	$	(115.7	)

Unrecognized Tax Benefits

The following table summarizes the activity related to our unrecognized tax benefits:

	December 31,
(in millions of dollars)		2025			2024
Balance at beginning of the year	$	1.9		$	2.8
Increases related to current year positions		0.5			0.5
Decreases related to audit settlements and statute expirations		(0.6	)		(1.4	)
Balance at the end of the year	$	1.8		$	1.9

Cash Paid for Income Taxes, Net of Refunds

Upon adoption of ASU 2023-09, Improvements to Income Tax Disclosures (see Note 1), cash paid for income taxes, net of refunds during the year ended December 31, 2025, were as follows:


	December 31,
(in millions of dollars)			2025
U.S. - Federal		$	18.0
U.S. - State			3.2
Foreign
Brazil			6.7
Canada			3.9
China			12.3
Turkey			8.6
All other countries			16.1
Total income taxes paid, net		$	68.8

Accounting for Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2025

Accounting for Asset Retirement Obligations [Abstract]

Reconciliation of Asset Retirement Obligations

The following is a reconciliation of asset retirement obligations as of December 31, 2025 and 2024:


	December 31,
(in millions of dollars)		2025			2024
Asset retirement obligation, beginning of period	$	27.6		$	20.8
Accretion expense		2.6			1.6
Other		3.7			6.5
Payments		(6.9	)		(0.8	)
Foreign currency translation		0.3			(0.5	)
Asset retirement obligation, end of period	$	27.3		$	27.6

Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contracts with Customers [Abstract]

Disaggregation of Revenue by Product Line

The following table disaggregates our revenue by major source (product line) for the years ended December 31, 2025, 2024, and 2023:


	Year Ended December 31,
(in millions of dollars)		2025		2024		2023
Net Sales
Household & Personal Care	$	512.8	$	530.0	$	517.6
Specialty Additives		584.9		610.2		642.6
Consumer & Specialties Segment		1,097.7		1,140.2		1,160.2

High-Temperature Technologies		704.7		713.2		720.9
Environmental & Infrastructure		270.2		265.1		288.8
Engineered Solutions Segment		974.9		978.3		1,009.7

Total net sales	$	2,072.6	$	2,118.5	$	2,169.9

Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Fair Value of Financial Instruments [Abstract]
Transfers in or out of Level 3	$ 0	$ 0

Accounting for Asset Retirement Obligations

12 Months Ended

Dec. 31, 2025

Accounting for Asset Retirement Obligations [Abstract]

Accounting for Asset Retirement Obligations

Note 20. Accounting for Asset Retirement Obligations

The Company records asset retirement obligations in which the Company will be required to retire tangible long-lived assets. These are primarily related to its PCC satellite facilities and mining operations. The Company has also recorded the provisions related to conditional asset retirement obligations at its facilities. The Company has recorded asset retirement obligations at all of its facilities except where there are no contractual or legal obligations. The associated asset retirement costs are capitalized as part of the carrying amount of the long-lived asset.

The following is a reconciliation of asset retirement obligations as of December 31, 2025 and 2024:


	December 31,
(in millions of dollars)		2025			2024
Asset retirement obligation, beginning of period	$	27.6		$	20.8
Accretion expense		2.6			1.6
Other		3.7			6.5
Payments		(6.9	)		(0.8	)
Foreign currency translation		0.3			(0.5	)
Asset retirement obligation, end of period	$	27.3		$	27.6

The Company mines various minerals using a surface mining process that requires the removal of overburden. In certain areas and under various governmental regulations, the Company is obligated to restore the land comprising each mining site to its original condition at the completion of the mining activity. This liability will be adjusted to reflect the passage of time, mining activities, and changes in estimated future cash outflows.

In the third quarter of 2024, the Company recorded an additional $7.0 million of asset retirement obligations in relation to our mining business.

The current portion of the liability of approximately $0.7 million is included in other current liabilities and the long-term portion of the liability of approximately $26.6 million is included in other non-current liabilities in the Consolidated Balance Sheet as of December 31, 2025.

Accretion expense is included in cost of goods sold in the Company’s Consolidated Statements of Income (Loss).

Income Taxes - Reconciliation of Statutory to Effective Federal Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Abstract]
Net income (loss) before tax and equity in earnings (in Dollars)	$ (14.0)	$ 223.6	$ 107.7
U.S. federal statutory tax rate (in Dollars)	$ (2.9)
U.S. federal statutory tax rate	21.00%	21.00%	21.00%
State and local income taxes, net of federal income tax effect (in Dollars)	$ (3.0)
State and local income taxes, net of federal income tax effect	21.80%	1.40%	(0.10%)
Foreign tax effects of rates different than statutory		4.70%	7.70%
Global Intangible Low-Tax Income (GILTI) (in Dollars)	$ 3.6
Global Intangible Low-Tax Income (GILTI)	(25.40%)	0.10%	1.00%
Foreign Derived Intangible Income (FDII) (in Dollars)	$ (0.8)
Foreign Derived Intangible Income (FDII)	5.50%	(1.00%)	(2.50%)
Other cross-border tax adjustments (in Dollars)	$ 0.3
Other cross-border tax adjustments	(2.50%)
Tax credits (in Dollars)	$ (0.1)
Tax credits	0.70%	(0.70%)	(0.60%)
Debtor-In-Possession Credit Agreement (in Dollars)	$ 10.5
Debtor-In-Possession Credit Agreement	(75.20%)
Depletion (in Dollars)	$ (8.4)
Depletion	60.10%	(4.40%)	(10.30%)
Section 162(m) (in Dollars)	$ 1.5
Section 162(m)	(10.70%)
Previously taxed income - Foreign exchange loss (in Dollars)	$ (3.0)
Previously taxed income - Foreign exchange loss	21.30%
Other permanent differences (in Dollars)	$ 1.6
Other permanent differences	(11.10%)
Changes in unrecognized tax benefits (in Dollars)	$ (0.1)
Changes in unrecognized tax benefits	1.00%	(0.30%)	0.20%
Other adjustments		0.80%	1.70%
Total tax provision (in Dollars)	$ 4.9	$ 59.4	$ 23.7
Consolidated effective tax rate	(35.00%)	26.60%	22.00%
Bankruptcy Funding		3.10%	0.00%
Impact of officer's non-deductible compensation		1.10%	1.90%
Foreign Withholding tax		0.80%	2.00%
Brazil [Member]
Income Taxes [Abstract]
Foreign tax effects of rates different than statutory (in Dollars)	$ 2.2
Foreign tax effects of rates different than statutory	(16.10%)
Other adjustments (in Dollars)	$ (0.1)
Other adjustments	0.60%
China [Member]
Income Taxes [Abstract]
Foreign tax effects of rates different than statutory (in Dollars)	$ 2.7
Foreign tax effects of rates different than statutory	(19.50%)
Other Foreigen Jurisdictions [Member]
Income Taxes [Abstract]
Foreign tax effects of rates different than statutory (in Dollars)	$ 0.8
Foreign tax effects of rates different than statutory	(5.90%)
U.S. [Member]
Income Taxes [Abstract]
Other adjustments (in Dollars)	$ 0.1
Other adjustments	(0.60%)

Inventories - Inventories by Major Category (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Inventories [Abstract]
Raw materials	$ 160.6	$ 167.7
Work-in-process	13.3	12.3
Finished goods	117.3	106.7
Packaging and supplies	59.0	55.4
Total inventories	$ 350.2	$ 342.1

Restructuring and Other Items (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Oct. 01, 2023	Jul. 02, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring and Other Items [Abstract]
Severance and other related costs			$ 5.5	$ 0.0
Write-down of assets and other charges			9.5
Asset write-down charges			0.0	0.0	$ 71.7
Severance and other related costs	$ 0.3	$ 6.6	10.3	0.0	6.9
Restructuring reserve			$ 4.9	$ 2.4	$ 3.8
Consumer & Specialties [Member]
Restructuring and Other Items [Abstract]
Asset write-down charges	$ 71.7

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Contingencies

12 Months Ended

Dec. 31, 2025

Contingencies [Abstract]

Contingencies

Note 17. Contingencies

The Company is party to a number of lawsuits arising in the normal course of our business. The Company and certain of the Company’s subsidiaries are among numerous defendants in a number of cases seeking damages for alleged exposure to asbestos-contaminated talc products sold by the Company’s subsidiary BMI Oldco Inc.

On October 2, 2023 (the “Petition Date”), notwithstanding the Company’s confidence in the safety of Oldco’s talc products, the Company’s subsidiaries, Oldco and Barretts Ventures Texas LLC ("BVT" and, together with Oldco, the “Chapter 11 Debtors”), filed voluntary petitions for relief under Chapter 11 of the U.S. Bankruptcy Code in the United States Bankruptcy Court for the Southern District of Texas (the “Chapter 11 Cases”) to address and comprehensively resolve Oldco’s liabilities associated with talc. Minerals Technologies Inc. and the Company’s other subsidiaries were not included in the Chapter 11 filing.

The Chapter 11 Debtors’ ultimate goal in the Chapter 11 Cases is to confirm a plan of reorganization under Section 524(g) of the U.S. Bankruptcy Code and utilize this provision of the Bankruptcy Code to establish a trust that will address all current and future talc-related claims. Discussions regarding the terms of a potential consensual plan of reorganization and the ultimate amount to be contributed to any trust are ongoing.


	Three Months Ended			Twelve Months Ended
		Dec. 31,	Dec. 31,		Dec. 31,	Dec. 31,
(number of claims)		2025	2024		2025	2024
Claims pending, beginning of period		840	663		684	574
Claims filed		135	44		346	162
Less: Claims dismissed, settled, or otherwise resolved		61	23		116	52
Claims pending, end of period		914	684		914	684

These claims typically allege various theories of liability, including negligence, gross negligence, and strict liability and seek compensatory and, in some cases, punitive damages, but most of these claims do not provide adequate information to assess their merits, the likelihood that the Company will be found liable, or the magnitude of such liability, if any. We are unable to state an amount or range of amounts claimed in any of these lawsuits because state court pleading practices do not require the plaintiff to identify the amount of the claimed damage. The Company’s position, as stated publicly, is that the talc products sold by Oldco are safe and do not cause cancer.

During the pendency of the Chapter 11 Cases, the Company anticipates that the Chapter 11 Debtors will benefit from the operation of the automatic stay, which stays ongoing litigation in connection with talc-related claims against the Chapter 11 Debtors. In addition, the Bankruptcy Court temporarily enjoined the filing or continued prosecution of all talc-related claims against the Chapter 11 Debtors’ non-debtor affiliates, subject to certain exceptions. Such exceptions consist of claims premised solely on alleged inadequacies in testing of talc sold by Oldco. The Company is vigorously opposing and defending against these claims.

While costs relating to the talc-related cases have increased concurrently with the volume, the majority of these costs have historically been borne by Pfizer Inc. (“Pfizer”) in connection with certain agreements entered into in connection with the Company’s initial public offering in 1992, and as long as the litigation is subject to the stay under the Chapter 11 Cases (subject to certain exceptions), the Company will not be required to make any payments in respect thereof. The Company is entitled to indemnification, pursuant to agreement, for liabilities arising from sales prior to the initial public offering. On May 22, 2024, Pfizer filed a motion in the Chapter 11 Cases seeking permission to file a lawsuit against the Company related to the 1992 agreement. That motion has been adjourned, and Pfizer and the Company have agreed to mediate their disputes. The Company continues to receive information from Pfizer with respect to potential costs associated with the defense and/or settlement of talc-related cases that Pfizer alleges are not subject to indemnification. Although the Company believes that the talc products are safe and that claims to the contrary are without merit, Oldco opportunistically settled certain talc-related cases in 2022 and 2023. None of such settlements were material to the Company.

In the second quarter of 2024, Oldco sold its talc assets under section 363 of the Bankruptcy Code. In addition, in the second quarter of 2024, the Company entered into a Debtor-in-Possession Credit Agreement with Oldco (the “DIP Credit Agreement”) and recorded a provision for credit loss of $30 million for the maximum principal amount under such Credit Agreement. In the second quarter of 2025, the Company agreed to amend the DIP Credit Agreement to increase the maximum principal amount under such Credit Agreement by $30 million. Proceeds of the sale of Oldco’s talc assets and funds drawn by Oldco under the DIP Credit Agreement have been and will be used to fund the Chapter 11 Cases.

Following the Chapter 11 filing, the activities of the Chapter 11 Debtors are now subject to review and oversight by the bankruptcy court. As a result, the Chapter 11 Debtors were deconsolidated as of the Petition Date, and their assets and liabilities were derecognized from the Company’s consolidated financial statements on a prospective basis.

On June 25, 2024, the committee representing talc claimants (the “Committee”) filed a motion to dismiss the Chapter 11 Cases. On April 29, 2025, the Bankruptcy Court denied dismissal of the Chapter 11 Cases. On May 13, 2025, the Committee filed a motion with the United States District Court for the Southern District of Texas (the “District Court”) seeking leave to appeal the order denying the motion to dismiss, which the Chapter 11 Debtors opposed.

On May 14, 2025, the Bankruptcy Court entered a Report and Recommendation (i) recommending that the District Court determine whether any of the talc sold by Oldco contained sufficient quantity and form of asbestos to cause mesothelioma or other asbestos-related diseases and (ii) abating the Chapter 11 Cases pending a determination by the District Court. The Company supports this path forward. The Chapter 11 Cases remain pending.

In the first quarter of 2025, the Company recorded a provision to establish an accrual of $215 million for estimated costs to fund a trust to resolve all current and future talc-related claims as well as fund the Chapter 11 Cases and related litigation costs (including the aforementioned $30 million increase to the maximum principal amount of the DIP Credit Agreement). The parties have not yet reached a final resolution of all matters in the Chapter 11 Cases, and the Company is unable to estimate the possible loss or range of loss beyond the amount accrued.

The Company records accruals for loss contingencies associated with legal matters, including talc-related litigation and the Chapter 11 Cases, when it is probable that a liability will be incurred and the amount of the loss can be reasonably estimated. Amounts accrued for legal contingencies often result from a complex series of judgments about future events and uncertainties that rely heavily on estimates and assumptions including timing of related payments. The ability to make such estimates and judgments can be affected by various factors, including whether damages sought in the proceedings are unsubstantiated or indeterminate, the stage of the litigation, the factual and legal matters in dispute, the ability to achieve comprehensive settlements, the availability of co-defendants with substantial resources and assets participating in the litigation, and our evaluation of the unique attributes of each claim.

The broader litigation and regulatory environments for talc-related claims continue to evolve. Moreover, although the Chapter 11 Cases are progressing, it is not possible at this time to predict how the District Court will rule on the pending motions, whether an appellate court will affirm or reverse the Bankruptcy Court order denying the Committee’s motion to dismiss, the form of any ultimate resolution or when an ultimate resolution might occur. Given the foregoing factors, it is reasonably possible that the Company will incur a loss for liabilities associated with talc claims in excess of the amount accrued. This risk is based on the potential for new talc-related claims that could eventually be asserted together with their associated disposition cost and related legal costs, despite the automatic stay with respect to claims against the Chapter 11 Debtors, taking into account the portion of such hypothetical claims that may be subject to indemnification by Pfizer, as well as the inability to predict the amount that may ultimately be necessary to fully and finally resolve all of the Chapter 11 Debtors’ future talc-related claims in connection with a confirmed Chapter 11 plan of reorganization. In light of the uncertainties involved in such matters, the resolution of, or recognition of additional liabilities in connection with, current or future talc claims could have a material adverse effect on the Company’s results of operations, cash flows, and financial condition.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income (loss)	$ (14.0)	$ 170.9	$ 88.3
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	38.5	(49.9)	(6.1)
Pension and postretirement plan adjustments	8.4	30.6	5.6
Unrealized gain (loss) on cash flow hedges	(0.4)	0.3	(3.3)
Total other comprehensive income (loss), net of tax	46.5	(19.0)	(3.8)
Total comprehensive income including non-controlling interests	32.5	151.9	84.5
Less: Net income attributable to non-controlling interests	4.4	3.8	4.2
Less: Foreign currency translation adjustments attributable to non-controlling interests	(0.2)	(1.3)	(0.9)
Comprehensive income attributable to non-controlling interests	4.2	2.5	3.3
Comprehensive income attributable to Minerals Technologies Inc.	$ 28.3	$ 149.4	$ 81.2

Long-Term Debt and Commitments (Details) $ in Millions		3 Months Ended	12 Months Ended
Long-Term Debt and Commitments (Details) $ in Millions	Apr. 29, 2022 USD ($) Loan	Dec. 31, 2024 USD ($)	Dec. 31, 2027 Loan	Dec. 31, 2025 USD ($) Quarter Loan	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Nov. 26, 2024 USD ($)	Aug. 11, 2022 USD ($)	Jun. 30, 2020 USD ($)
Long-Term Debt and Commitments [Abstract]
Non-cash debt extinguishment expenses		$ (1.8)		$ 0.0	$ (1.8)	$ 0.0
Long-term debt (in Dollars)		966.1		961.3	966.1
Repayment of long-term debt (in Dollars)				6.6	533.6	14.8
Short-term debt (in Dollars)		$ 5.1		$ 0.4	$ 5.1
Weighted average interest rate on short-term borrowings		6.90%		6.60%	6.90%
2026				$ 6.4
2027				6.0
2028				405.8
2029				5.7
2030				5.7
Thereafter				540.6
Interest costs				61.0	$ 63.2	64.1
Capitalized interest cost				$ 1.1	1.0	$ 1.0
Revolving Facility [Member]
Long-Term Debt and Commitments [Abstract]
Maximum borrowing capacity (in Dollars)							$ 400.0
Maturity date				Nov. 26, 2029
Adjustment to applicable margin, Category a				0.375%
Adjustment to applicable margin, Category b				0.125%
Adjustment to applicable margin, Category c				(0.125%)
Commitment fee				0.175%
Step-down commitment fee				0.15%
Fronting fee				0.125%
Revolving Facility [Member] \| Minimum [Member]
Long-Term Debt and Commitments [Abstract]
Net leverage ratio, Category a				3
Net leverage ratio, Category b				2
Net leverage ratio, Category c				1
Step-up commitment fee				0.25%
Revolving Facility [Member] \| Maximum [Member]
Long-Term Debt and Commitments [Abstract]
Net leverage ratio, Category b				3
Step-up commitment fee				0.30%
Revolving Facility [Member] \| Term SOFR [Member]
Long-Term Debt and Commitments [Abstract]
Applicable margin				1.375%
Revolving Facility [Member] \| Base Rate [Member]
Long-Term Debt and Commitments [Abstract]
Applicable margin				0.375%
Revolving Facility [Member] \| EURIBOR [Member]
Long-Term Debt and Commitments [Abstract]
Applicable margin				1.375%
Revolving Facility [Member] \| SONIA [Member]
Long-Term Debt and Commitments [Abstract]
Applicable margin				1.375%
Term Loan due 2031 [Member]
Long-Term Debt and Commitments [Abstract]
Face amount (in Dollars)							$ 575.0
Maturity date				Nov. 26, 2031
Amortization rate of loans				1.00%
Original issue discount rate				99.875%
Long-term debt (in Dollars)		$ 567.7		$ 562.7	$ 567.7
Term Loan due 2031 [Member] \| Term SOFR [Member]
Long-Term Debt and Commitments [Abstract]
Applicable margin				2.00%
Term Loan due 2031 [Member] \| Base Rate [Member]
Long-Term Debt and Commitments [Abstract]
Applicable margin				1.00%
Term Loan due 2027 [Member]
Long-Term Debt and Commitments [Abstract]
Face amount (in Dollars)								$ 550.0
Revolving Facility [Member]
Long-Term Debt and Commitments [Abstract]
Maximum borrowing capacity (in Dollars)								$ 300.0
Long-term debt (in Dollars)				$ 0.0
Letters of credit outstanding (in Dollars)				$ 9.2
Senior Secured Credit Facilities [Member]
Long-Term Debt and Commitments [Abstract]
Period prior to stated maturity date of Senior Notes				91 days
Threshold amount of senior notes (in Dollars)				$ 50.0
Period after scheduled maturity date of facility				90 days
Senior Notes due 2028 [Member]
Long-Term Debt and Commitments [Abstract]
Face amount (in Dollars)									$ 400.0
Maturity date				Jun. 30, 2028
Interest rate		5.00%		5.00%	5.00%
Long-term debt (in Dollars)		$ 396.8		$ 397.7	$ 396.8
Guarantee amount (in Dollars)				$ 50.0
Senior Notes due 2028 [Member] \| Redemption of Notes if Company Experiences Change of Control [Member]
Long-Term Debt and Commitments [Abstract]
Redemption price percentage				101.00%
Previous Secured Credit Facilities [Member]
Long-Term Debt and Commitments [Abstract]
Net leverage ratio under financial covenant				4
Number of quarters to maintain net leverage ratio under financial covenant (in Quarter) (in Quarter) \| Quarter				4
Net leverage ratio under financial covenant in connection with certain significant acquisitions				5
Japan Loan Facility [Member]
Long-Term Debt and Commitments [Abstract]
Long-term debt (in Dollars)				$ 0.4
Repayment of long-term debt (in Dollars)				0.5
Austria and Slovakia Term Loans [Member]
Long-Term Debt and Commitments [Abstract]
Repayment of long-term debt (in Dollars)				$ 0.4
Number of term loans assumed (in Loan) (in Loan) \| Loan	2
Austria and Slovakia Term Loans [Member] \| Plan [Member]
Long-Term Debt and Commitments [Abstract]
Number of term loans that mature (in Loan) (in Loan) \| Loan			1	1
Austria and Slovakia Term Loans [Member] \| Concept Pet [Member]
Long-Term Debt and Commitments [Abstract]
Long-term debt assumed as part of acquisition (in Dollars)	$ 1.9
Uncommitted Short-Term Bank Credit Lines [Member]
Long-Term Debt and Commitments [Abstract]
Maximum borrowing capacity (in Dollars)				$ 18.4
Short-term debt (in Dollars)				$ 0.4

Segment and Related Information - Reconciliation of Segment Income to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment and Related Information [Abstract]
Income from operations			$ 47.4	$ 286.5	$ 171.8
Interest expense, net			(54.5)	(56.4)	(59.2)
Other non-operating deductions, net			(6.9)	(4.7)	(4.9)
Provision for litigation accrual and credit losses	$ 215.0		215.0	30.0	0.0
Restructuring and other items			15.0	0.0	6.9
Acquisition-related expenses			0.0	0.0	0.3
Litigation expenses			19.6	11.3	29.2
Debt extinguishment expenses		$ (1.8)	0.0	(1.8)	0.0
Income (loss) before tax and equity in earnings			(14.0)	223.6	107.7
Operating Segments [Member]
Segment and Related Information [Abstract]
Income from operations			293.9	339.5	189.4
Reconciling Item [Member]
Segment and Related Information [Abstract]
Interest expense, net			(54.5)	(56.4)	(59.2)
Other non-operating deductions, net			(6.9)	(4.7)	(4.9)
Provision for litigation accrual and credit losses			215.0	30.0	0.0
Restructuring and other items			2.2	0.0	2.8
Acquisition-related expenses			0.0	0.0	0.3
Litigation expenses			19.6	11.3	2.4
Unallocated corporate expenses			9.7	11.7	12.1
Debt extinguishment expenses			$ 0.0	$ (1.8)	$ 0.0

Leases - Components of Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 18.8	$ 17.3	$ 16.7
Short-term lease cost	0.0	0.0	0.1
Total lease cost	$ 18.8	$ 17.3	$ 16.8

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2025
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Leases - Outstanding Lease Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Leases [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets and deferred charges	Other assets and deferred charges
Right-of-use-asset	$ 45.2	$ 46.9
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Lease liability - current	$ 16.5	$ 14.5
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other non-current liabilities	Other non-current liabilities
Lease liability - non-current	$ 33.8	$ 38.7

Cover - USD ($) $ in Billions	12 Months Ended
Cover - USD ($) $ in Billions	Dec. 31, 2025	Feb. 06, 2026	Jun. 29, 2025
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Financial Statement Error Correction [Flag]	false
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	true
Amendment Flag	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Entity Information [Line Items]
Entity Registrant Name	MINERALS TECHNOLOGIES INC.
Entity Central Index Key	0000891014
Entity File Number	1-11430
Entity Tax Identification Number	25-1190717
Entity Incorporation, State or Country Code	DE
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 1.2
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	622 Third Avenue
Entity Address, Address Line Two	38th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017-6707
Entity Phone Fax Numbers [Line Items]
City Area Code	212
Local Phone Number	878-1800
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $0.10 par value
Trading Symbol	MTX
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		31,048,585

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2025
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1. Summary of Significant Accounting Policies Business Minerals Technologies Inc. (together with its subsidiaries, the “Company,” “MTI,” “we,” “us,” or “our”) is a global, technology-driven specialty minerals company that develops, produces, and markets a wide range of minerals and mineral-based products and services. We utilize global mineral reserves with our core technologies and applications to deliver innovative solutions for products that are part of everyday life. We serve customers in consumer and industrial markets worldwide. Basis of Presentation The accompanying consolidated financial statements include the accounts of the Company, its wholly and majority-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The Company employs accounting policies that are in accordance with U.S. generally accepted accounting principles and require management to make estimates and assumptions relating to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reported period. Significant estimates include those related to valuation of long-lived assets, goodwill, and other intangible assets, certain pension plan assumptions, valuation of deferred income tax assets, and litigation and environmental liabilities. Actual results could differ from those estimates. Cash Equivalents and Short-term Investments The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. Short-term investments consist of financial instruments, mainly bank deposits, with original maturities beyond three months, but less than twelve months. Short-term investments amounted to $3.6 million and $4.0 million at December 31, 2025 and 2024, respectively. There were no unrealized holding gains or losses on the short-term bank investments held at December 31, 2025. Trade Accounts Receivable Trade accounts receivables are recorded at the invoiced amount and do not bear interest. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in the Company’s existing accounts receivable. The Company determines the allowance based on historical write-off experience and specific allowances for bankrupt customers. The Company also analyzes the collection history and financial condition of its other customers, considering current industry conditions and determines whether an allowance needs to be established. The Company reviews its allowance for doubtful accounts monthly. Past due balances over 90 days based on payment terms are reviewed individually for collectability. Allowance for doubtful accounts was $16.7 million and $17.1 million at December 31, 2025 and 2024, respectively. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. The Company does not have any off-balance-sheet credit exposure related to its customers. Allowance for Credit Losses The allowance for credit losses (ACL) is management's estimate of the current expected credit losses at the balance sheet date. Our credit exposure includes an unfunded loan commitment. For this exposure, we recognized an ACL associated with the unfunded amount, which is reported as a liability in accrued expenses and other current liabilities on our Consolidated Balance Sheets. Legal Contingencies The Company is party to a number of lawsuits arising in the normal course of our business. The Company and certain of the Company's subsidiaries are among numerous defendants in a number of cases seeking damages for alleged exposure to asbestos-contaminated talc products sold by the Company's subsidiary BMI Oldco Inc. The Company records accruals for loss contingencies associated with legal matters, including talc-related litigation and the Chapter 11 Cases, when it is probable that a liability will be incurred and the amount of the loss can be reasonably estimated. See Note 17 to the Consolidated Financial Statements included in this report for more information. Inventories We carry inventories consisting of finished goods, work-in-process, raw materials, and supplies. Inventories are stated at the lower of cost or net realizable value and are presented net of applicable reserves on our Consolidated Balance Sheets. Cost is determined by using the first-in, first-out (FIFO) method. We regularly review our inventories for impairment and reserves are established when necessary. Property, Plant, and Equipment Property, plant, and equipment are recorded at cost. Significant improvements are capitalized, while maintenance and repair expenditures are charged to operations as incurred. The Company capitalizes interest cost as a component of construction in progress. The straight-line method of depreciation is used for substantially all the assets for financial reporting purposes, except for mining related equipment - which uses the units-of-production method. The annual rates of depreciation are 3% - 6.67% for buildings, 6.67% - 12.5% for machinery and equipment, 8% - 12.5% for furniture and fixtures, and 12.5% - 25% for computer equipment and software-related assets. The estimated useful lives of our PCC production facilities and machinery and equipment pertaining to our natural stone mining and processing plants and our chemical plants are 15 years. Property, plant, and equipment are depreciated over their useful lives. Useful lives are based on management’s estimates of the period that the assets can generate revenue, which does not necessarily coincide with the remaining term of a customer’s contractual obligation to purchase products made using those assets. The Company’s sales of PCC are predominantly pursuant to long-term evergreen contracts, initially ten to fifteen years in length, with paper mills at which the Company operates satellite PCC plants. The terms of many of these agreements have been extended, often in connection with an expansion of the satellite PCC plant. Failure of a PCC customer to renew an agreement or continue to purchase PCC from a Company facility could result in an impairment of assets charge or accelerated depreciation at such facility. Depletion of mineral reserves is determined on a unit-of-extraction basis for financial reporting purposes, based upon proven and probable reserves, and generally on a percentage depletion basis for tax purposes. Stripping Costs Incurred During Production Stripping costs are those costs incurred for the removal of waste materials for the purpose of accessing ore body that will be produced commercially. Stripping costs incurred during the production phase of a mine are variable costs that are included in the costs of inventory produced during the period that the stripping costs are incurred. Accounting for the Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, the Company estimates the undiscounted future cash flows (excluding interest), resulting from the use of the asset and its ultimate disposition. If the sum of the undiscounted cash flows (excluding interest) is less than the carrying value, the Company recognizes an impairment loss, measured as the amount by which the carrying value exceeds the fair value of the asset, determined principally using discounted cash flows. Goodwill and Other Intangible Assets Goodwill represents the excess of purchase price and related costs over the value assigned to the net tangible and identifiable intangible assets of businesses acquired. Goodwill is not amortized but instead assessed for impairment. Intangible assets with estimable useful lives are amortized on a straight-line basis over their respective estimated lives to the estimated residual values and reviewed for impairment. The Company performs a qualitative assessment for each of its reporting units to determine if the two-step process for impairment testing is required. If the Company determines that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company would then evaluate the recoverability of goodwill using a two-step impairment test approach at the reporting unit level. In the first step, the fair value for the reporting unit is compared to its book value including goodwill. In the case that the fair value of the reporting unit is less than book value, a second step is performed which compares the fair value of the reporting unit’s goodwill to the book value of the goodwill. The fair value for the goodwill is determined based on the difference between the fair values of the reporting unit and the net fair values of the identifiable assets and liabilities of such reporting unit. If the fair value of the goodwill is less than the book value, the difference is recognized as impairment. In addition to the assessment of goodwill impairment, the Company also reviews its other identifiable intangibles for impairment. Each year, the Company reviews whether events or changes in circumstances could indicate that a long-lived asset’s carrying amount may not be recoverable. Should such events occur, the value of intangibles not recoverable would be recognized as impairment. Investment in Joint Ventures The Company uses the equity method of accounting to record the results of its investments in companies in which it has significant influence but does not control, and cost method of accounting in companies in which it cannot exercise significant control. The Company records the equity in earnings of its investments in joint ventures on a one-month lag. At December 31, 2025 and 2024, the book value of the Company’s equity method investments was $24.7 million and $23.4 million, respectively. Accounting for Asset Retirement Obligations The Company provides for obligations associated with the retirement of long-lived assets and the associated asset retirement costs. The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. The associated asset retirement costs are capitalized as part of the carrying amount of the long-lived asset. The Company also provides for legal obligations to perform asset retirement activities where timing or methods of settlement are conditional on future events. The Company also records liabilities related to land reclamation as a part of the asset retirement obligations. The Company mines land for various minerals using a surface-mining process that requires the removal of overburden. In many instances, the Company is obligated to restore the land upon completion of the mining activity. As the overburden is removed, the Company recognizes this liability for land reclamation based on the estimated fair value of the obligation. The obligation is adjusted to reflect the passage of time and changes in estimated future cash outflows. Fair Value of Financial Instruments The recorded amounts of cash and cash equivalents, receivables, short-term borrowings, accounts payable, accrued interest, and variable-rate long-term debt approximate fair value because of the short maturity of those instruments or the variable nature of underlying interest rates. Short-term investments are recorded at cost, which approximates fair market value. Derivative Financial Instruments The Company records derivative financial instruments which are used to hedge certain foreign exchange risk at fair value on the balance sheet. See Note 12 for a full description of the Company’s hedging activities and related accounting policies. Revenue Recognition Revenue is recognized at the point in time when the customer obtains control of the promised goods or services in an amount that reflects the consideration we expect to receive in exchange for those goods or services. The Company’s revenues are primarily derived from the sale of products. Our primary performance obligation is satisfied upon shipment or delivery to our customer based on written sales terms, which is also when control is transferred. Revenues from sales of equipment are recorded upon completion of installation and transfer of control to the customer. Revenue where our performance obligations are satisfied in phases is recognized over time using certain input measures based on the measurement of the value transferred to the customer, including milestones achieved. Revenues from services are recorded when the services are performed. In most of our PCC contracts, the price per ton is based upon the total number of tons sold to the customer during the year. Under those contracts, the price billed to the customer for shipments during the year is based on periodic estimates of the total annual volume that will be sold to the customer. Revenues are adjusted at the end of each year to reflect the actual volume sold. There were no significant revenue adjustments in the fourth quarter of 2025 and 2024, respectively. We have consignment arrangements with certain customers in our Engineered Solutions segment. Revenues for these transactions are recorded when the consigned products are consumed by the customer. Foreign Currency The assets and liabilities of the Company’s international subsidiaries are translated into U.S. dollars using exchange rates at the respective balance sheet date. The resulting translation adjustments are recorded in accumulated other comprehensive income (loss) in shareholders’ equity. Income statement items are generally translated at monthly average exchange rates prevailing during the period. International subsidiaries operating in highly inflationary economies translate non-monetary assets at historical rates, while net monetary assets are translated at current rates, with the resulting translation adjustments included in net income. At December 31, 2025, the Company had no international subsidiaries operating in highly inflationary economies, with the exception of its subsidiaries in Turkey. Income Taxes Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company operates in multiple taxing jurisdictions, both within the U.S. and outside the U.S. In certain situations, a taxing authority may challenge positions that the Company has adopted in its income tax filings. The Company regularly assesses its tax position for such transactions and includes reserves for those differences in position. The reserves are utilized or reversed once the statute of limitations has expired or the matter is otherwise resolved. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, we are required to make many subjective assumptions and judgments regarding our income tax exposures. Interpretations of and guidance surrounding income tax laws and regulations change over time. As such, changes in our subjective assumptions and judgments can materially affect amounts recognized in the consolidated balance sheets and statements of operations. The Company’s accounting policy is to recognize interest and penalties as part of its provision for income taxes. See Note 8 for additional details on our uncertain tax positions. The accompanying consolidated financial statements do not include a provision for foreign withholding taxes on international subsidiaries’ unremitted earnings, which are expected to be permanently reinvested overseas. Research and Development Research and development costs are expensed as incurred. Accounting for Stock-Based Compensation The Company recognizes compensation expense for share-based awards based upon the grant date fair value over the vesting period. Pension and Postretirement Benefits The Company has defined benefit pension plans covering the majority of its eligible employees. The benefits are generally based on years of service and an employee’s modified career earnings. The Company also provides postretirement healthcare benefits for the majority of its retirees and employees in the United States. The Company measures the costs of its obligation based on its best estimate. The net periodic costs are recognized as employees render the services necessary to earn the postretirement benefits. Environmental Expenditures that relate to current operations are expensed or capitalized as appropriate. Expenditures that relate to an existing condition caused by past operations and which do not contribute to current or future revenue generation are expensed. Liabilities are recorded when it is probable the Company will be obligated to pay amounts for environmental site evaluation, remediation, or related costs, and such amounts can be reasonably estimated. Earnings (Loss) Per Share Basic earnings (loss) per share have been computed based upon the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share have been computed based upon the weighted average number of common shares outstanding during the period, assuming the issuance of common shares for all potentially dilutive common shares outstanding. Reclassifications Certain reclassifications have been made to the prior period financial information to conform to the presentation used in the consolidated financial statements for the year ended December 31, 2024. Subsequent Events The Company has evaluated for subsequent events through the date of issuance of its consolidated financial statements. Recently Issued Accounting Standards Changes to accounting principles generally accepted in the United States of America (U.S. GAAP) are established by the Financial Accounting Standards Board (FASB) in the form of accounting standards updates (ASUs) to the FASB’s Accounting Standards Codification. The Company considers the applicability and impact of all ASUs. ASUs not listed below were assessed and determined to be either not applicable or are expected to have minimal impact on our consolidated financial position and results of operations. Adoption of Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” that requires entities to disclose additional information about federal, state, and foreign income taxes primarily related to the income tax rate reconciliation and income taxes paid. The new standard also eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. The new standard is effective for interim and annual periods beginning on or after December 15, 2024. The Company adopted this guidance on January 1, 2025, on a prospective basis and updated the disclosures contained in Note 8. This guidance did not impact the Company’s Consolidated Financial Statements but resulted in the disaggregation of the Company's tax footnote disclosures. Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses,” that requires entities to disclose additional information in the notes to the financial statements about prescribed categories underlying any relevant income statement expense caption. The new standard is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. The adoption of this standard is not expected to have a material impact on the Company’s Consolidated Financial Statements but will result in disaggregation of the Company's income statement expenses.

Long-Term Debt and Commitments

12 Months Ended

Dec. 31, 2025

Long-Term Debt and Commitments [Abstract]

Long-Term Debt and Commitments

Note 15. Long-Term Debt and Commitments

The following is a summary of long-term debt:


	December 31,
(in millions of dollars)		2025		2024
Secured Credit Agreement:
Term Loan due 2031, net of unamortized discount and deferred financing costs of $6.5 million and $7.3 million	$	562.7	$	567.7

Senior Notes:
5.00% due 2028, net of unamortized deferred financing costs of $2.3 million and $3.2 million		397.7		396.8
Other debt		0.9		1.6
Total	$	961.3	$	966.1
Less: Current maturities		6.3		6.5
Long-term debt	$	955.0	$	959.6

On November 26, 2024, the Company, entered into a Refinancing Facility Agreement and Incremental Facility Amendment (the “Amendment”) to amend the Company's previous credit agreement (the "Previous Credit Agreement;" the previous credit agreement, as amended by the Amendment, being the "Amended Credit Agreement").

The Amendment provides for, among other things, a new senior secured revolving credit facility with aggregate commitments of $400 million (the “Revolving Facility”), a portion of which may be used for the issuance of letters of credit and swingline loans, and a new senior secured term loan facility with aggregate commitments of $575 million (the “Term Loan Facility” and, together with the Revolving Facility, the "Senior Secured Credit Facilities"). The Revolving Facility and the Term Loan Facility replace the facilities under the Previous Credit Agreement, which provided for, among other things, a $550 million senior secured term loan facility and a $300 million senior secured revolving credit facility. The maturity date for loans and commitments under the Revolving Facility is November 26, 2029, and the maturity date for loans under the Term Loan Facility is November 26, 2031; provided that the maturity dates of the Revolving Facility and the Term Loan Facility will be adjusted to the date that is 91 days prior to the stated maturity date of the Company’s 5.0% Senior Notes due 2028 (the “Notes”) unless, prior to the date that is 91 days prior to the stated maturity date of the Notes, all amounts in excess of $50 million of the Notes have been either (a) refinanced with indebtedness permitted under the Amended Credit Agreement maturing later than 90 days after the scheduled maturity date of the Revolving Facility or of the Term Loan Facility, as applicable, or (b) repaid, discharged or repaid (other than with the proceeds of any indebtedness maturing earlier than 91 days after the scheduled maturity date of the Revolving Facility or of the Term Loan Facility, as applicable). Loans under the Term Loan Facility amortize at a rate equal to 1.00% per annum, payable in equal quarterly installments, and were issued with original issue discount at 99.875% of par.

Loans under the Revolving Facility will bear interest at a rate equal to (a) for loans denominated in U.S. dollars, at the election of the Company, Term SOFR plus an applicable margin equal to 1.375% per annum or a base rate plus an applicable margin equal to 0.375% per annum, (b) for loans denominated in Euros, adjusted EURIBOR plus an applicable margin equal to 1.375% per annum and (c) for loans denominated in Pounds Sterling, SONIA plus an applicable margin equal to 1.375% per annum, subject in each case to (i) an increase of 37.5 basis points in the event that, and for so long as, the Net Leverage Ratio (as defined in the Amended Credit Agreement) is greater than or equal to 3.00 to 1.00 as of the last day of the preceding fiscal quarter, (ii) an increase of 12.5 basis points in the event that, and for so long as, the Net Leverage Ratio is less than 3.00 to 1.00 and greater than or equal to 2.00 to 1.00 as of the last day of the preceding fiscal quarter, and (iii) a decrease of 12.5 basis points in the event that, and for so long as, the Net Leverage Ratio is less than 1.00 to 1.00 as of the last day of the preceding fiscal quarter. Loans under the Term Loan Facility will bear interest at a rate equal to, at the election of the Company, Term SOFR plus an applicable margin equal to 2.00% per annum or a base rate plus an applicable margin equal to 1.00% per annum. The Company will pay certain fees under the Amended Credit Agreement, including (a) a commitment fee of 0.175% per annum on the undrawn portion of the Revolving Facility (subject to a step-ups to 0.300% and 0.250% and a step-down to 0.150% at the same levels described above), (b) a fronting fee of 0.125% per annum on the average daily undrawn amount of, plus unreimbursed amounts in respect of disbursements under, letters of credit issued under the Revolving Facility, and (c) customary annual administration fees. The obligations of the Company under the Senior Secured Credit Facilities are unconditionally guaranteed jointly and severally by, subject to certain exceptions, all material domestic subsidiaries of the Company (the “Guarantors”) and secured, subject to certain exceptions, by a security interest in substantially all of the tangible and intangible assets of the Company and the Guarantors.

In the fourth quarter of 2024, the Company recorded $1.8 million in non-cash debt extinguishment expenses related to the refinancing of our credit facilities, which represents the difference between the redemption payment and the carrying value of the debt at the refinancing date. All lenders under the previous facility were repaid in full.

As of December 31, 2025, there were no loans and $9.2 million in letters of credit outstanding under the Revolving Facility.

On June 30, 2020, the Company issued $400 million aggregate principal amount of “Notes.” The Notes were issued pursuant to an indenture, dated as of June 30, 2020, between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Indenture”). The Notes bear an interest rate of 5.0% per annum payable semi-annually on January 1 and July 1 of each year, beginning on January 1, 2021. The Notes are unconditionally guaranteed on a senior unsecured basis by each of the Company’s existing and future wholly owned domestic restricted subsidiaries that is a borrower under or that guarantees the Company’s obligations under its Senior Secured Credit Facilities or that guarantees the Company’s or any of the Company’s wholly owned domestic subsidiaries’ long-term indebtedness in an aggregate amount in excess of $50 million.

The Company may redeem some or all of the Notes at any time and from time to time at the applicable redemption prices listed in the Indenture, plus accrued and unpaid interest, if any, to, but excluding, the applicable redemption date.

If the Company experiences a change of control (as defined in the indenture), the Company is required to offer to repurchase the Notes at 101% of the principal amount of such Notes, plus accrued and unpaid interest, if any, to, but excluding, the date of repurchase.

The Amended Credit Agreement and the Indenture both contain certain customary affirmative and negative covenants that limit or restrict the ability of the Company and its restricted subsidiaries to enter into certain transactions or take certain actions, as well as customary events of default. In addition, the Amended Credit Agreement contains a financial covenant that requires the Company to maintain a maximum Net Leverage Ratio of 4.00 to 1.00 for each four fiscal quarter period (subject to an increase to 5.00 to 1.00 for four quarters in connection with certain significant acquisitions). The Company is in compliance with all the covenants contained in the Amended Credit Agreement throughout the period covered by this report.

The Company has a committed loan facility in Japan. As of December 31, 2025, there was an outstanding balance of $0.4 million on this facility. Principal will be repaid in accordance with the payment schedule ending in 2026. The Company repaid $0.5 million on this loan in 2025.

As part of the Concept Pet acquisition, the Company assumed $1.9 million in long-term debt, recorded at fair value, consisting of two term loans, one that matured in 2025 and one that matures in 2027. Both loans have annual payments and carry a variable interest rate. The Company repaid $0.4 million on these loans during 2025.

As of December 31, 2025, the Company had $18.4 million in uncommitted short-term bank credit lines, $0.4 million of which were in use.

There were $0.4 million and $5.1 million short-term borrowings as of December 31, 2025 and 2024, respectively. The weighted average interest rates on short-term borrowings outstanding were 6.6% and 6.9% for the years ended December 31, 2025 and 2024, respectively.

The aggregate maturities of long-term debt are as follows: $6.4 million in 2026; $6.0 million in 2027; $405.8 million in 2028, $5.7 million in 2029; $5.7 million in 2030; and $540.6 million thereafter.

During 2025, 2024, and 2023, respectively, the Company incurred interest costs of $61.0 million, $63.2 million, and $64.1 million, including $1.1 million, $1.0 million, and $1.0 million, respectively, which were capitalized. Interest paid approximated the incurred interest cost.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Benefit Plans - Weighted Average Asset Allocation Percentages (Details)	Dec. 31, 2025	Dec. 31, 2024
Benefit Plans [Abstract]
Weighted average asset allocation percentage	100.00%	100.00%
Equity Securities [Member]
Benefit Plans [Abstract]
Weighted average asset allocation percentage	56.00%	55.30%
Fixed Income Securities [Member]
Benefit Plans [Abstract]
Weighted average asset allocation percentage	31.60%	33.10%
Real Estate [Member]
Benefit Plans [Abstract]
Weighted average asset allocation percentage	0.10%	0.10%
Other [Member]
Benefit Plans [Abstract]
Weighted average asset allocation percentage	12.30%	11.50%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details