v3.26.1
Document And Entity Information - shares
 6 Months Ended
Jul. 05, 2026
Jul. 22, 2026
Document Information Line Items    
Entity Central Index Key 0000891014  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jul. 05, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 1-11430  
Entity Registrant Name MINERALS TECHNOLOGIES INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 25-1190717  
Entity Address, Address Line One 622 Third Avenue  
Entity Address, State or Province NY  
Entity Address, City or Town New York  
Entity Address, Postal Zip Code 10017-6707  
City Area Code 212  
Local Phone Number 878-1800  
Title of 12(b) Security Common Stock, $0.10 par value  
Trading Symbol MTX  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   31,128,762
Amendment Flag false  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31