Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
Apr. 05, 2026
Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Note 1. Basis of Presentation and Summary of Significant Accounting Policies The accompanying unaudited Condensed Consolidated Financial Statements have been prepared by management of Minerals Technologies Inc. (together with its subsidiaries, the “Company,” “MTI,” “we,” “us,” or “our”) in accordance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted. Therefore, these financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. In the opinion of management, all adjustments, consisting solely of normal recurring adjustments necessary for a fair presentation of the financial information for the periods indicated, have been included. The results for the three-month period ended April 5, 2026 are not necessarily indicative of the results that may be expected for the year ending December 31, 2026. Company Operations The Company 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. The Company has two reportable segments: Consumer & Specialties and Engineered Solutions. The Consumer & Specialties segment serves consumer end markets directly with mineral-to-market finished products and also provides specialty mineral-based solutions and technologies that are an essential component of our customers' finished products. The Engineered Solutions segment serves industrial end markets with engineered systems, mineral blends, and technologies that are designed to improve our customers' manufacturing processes and projects. 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 Condensed Consolidated Financial Statements and the reported amounts of revenue and expenses during the reported period. Significant estimates include those related to revenue recognition, valuation of long-lived assets, goodwill and other intangible assets, certain pension plan assumptions, valuation of deferred income tax assets, provision for credit losses, and legal and environmental liabilities. Actual results could differ from those estimates. Reclassifications Certain reclassifications have been made to the prior period financial information to conform to the presentation used in the Condensed Consolidated Financial Statements for the three-month periods ended April 5, 2026. 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. 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.

Basis of Presentation and Summary of Significant Accounting Policies

3 Months Ended

Apr. 05, 2026

Basis of Presentation and Summary of Significant Accounting Policies [Abstract]

Basis of Presentation and Summary of Significant Accounting Policies

Note 1. Basis of Presentation and Summary of Significant Accounting Policies

The accompanying unaudited Condensed Consolidated Financial Statements have been prepared by management of Minerals Technologies Inc. (together with its subsidiaries, the “Company,” “MTI,” “we,” “us,” or “our”) in accordance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted. Therefore, these financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. In the opinion of management, all adjustments, consisting solely of normal recurring adjustments necessary for a fair presentation of the financial information for the periods indicated, have been included. The results for the three-month period ended April 5, 2026 are not necessarily indicative of the results that may be expected for the year ending December 31, 2026.

Company Operations

The Company 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.

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

The Consumer & Specialties segment serves consumer end markets directly with mineral-to-market finished products and also provides specialty mineral-based solutions and technologies that are an essential component of our customers' finished products.

The Engineered Solutions segment serves industrial end markets with engineered systems, mineral blends, and technologies that are designed to improve our customers' manufacturing processes and projects.

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 Condensed Consolidated Financial Statements and the reported amounts of revenue and expenses during the reported period. Significant estimates include those related to revenue recognition, valuation of long-lived assets, goodwill and other intangible assets, certain pension plan assumptions, valuation of deferred income tax assets, provision for credit losses, and legal and environmental liabilities. Actual results could differ from those estimates.

Reclassifications

Certain reclassifications have been made to the prior period financial information to conform to the presentation used in the Condensed Consolidated Financial Statements for the three-month periods ended April 5, 2026.

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.

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.