Document And Entity Information (USD $)	6 Months Ended
	Jul. 01, 2012	Jul. 13, 2012	Jun. 30, 2011
Entity Registrant Name	MINERALS TECHNOLOGIES INC
Entity Central Index Key	0000891014
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 1,200,000,000
Entity Common Stock, Shares Outstanding		17,648,526
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 01, 2012