Minerals (MTX) 10-Q 24 Apr 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 29, 2015	Apr. 13, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	MINERALS TECHNOLOGIES INC
Entity Central Index Key	891014
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		34,731,478
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	29-Mar-15

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Product sales	$394.70	$244.40
Service revenue	58.6	0
Total net sales	453.3	244.4
Cost of goods sold	292.9	189.1
Cost of service revenue	43.8	0
Total cost of sales	336.7	189.1
Production margin	116.6	55.3
Marketing and administrative expenses	45.5	21.5
Research and development expenses	5.9	5.1
Amortization expense of intangible assets acquired	1.9	0
Acquisition related transaction and integration costs	3.4	5.1
Income from operations	59.9	23.6
Interest expense, net	-15.4	-0.1
Other non-operating income (deductions), net	3.2	-0.2
Total non-operating deductions, net	-12.2	-0.3
Income before provision for taxes and equity in earnings	47.7	23.3
Provision for taxes on income	12.1	7
Equity in earnings of affiliates, net of tax	0.4	0
Consolidated net income	36	16.3
Less: Net income attributable to non-controlling interests	0.9	0.7
Net income attributable to Minerals Technologies Inc. (MTI)	$35.10	$15.60
Earnings per share:
Basic earnings per share attributable to MTI (in dollars per share)	$1.01	$0.45
Diluted earnings per share attributable to MTI (in dollars per share)	$1.01	$0.45
Cash dividends declared per common share (in dollars per share)	$0.05	$0.05
Shares used in computation of earnings per share:
Basic (in shares)	34.7	34.4
Diluted (in shares)	34.9	34.7

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Consolidated net income	$36	$16.30
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	-27.8	2.1
Pension and postretirement plan adjustments	1.4	0.8
Cash flow hedges:
Net derivative gains (losses) arising during the period	0	-0.1
Total other comprehensive income (loss), net of tax	-26.4	2.8
Total comprehensive income including non-controlling interests	9.6	19.1
Comprehensive (income) loss attributable to non-controlling interest	1	-0.4
Comprehensive income attributable to MTI	$10.60	$18.70

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 29, 2015		Dec. 31, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$193.90	[1]	$249.60	[2]
Short-term investments, at cost which approximates market	2.1	[1]	0.8	[2]
Accounts receivable, net	414.8	[1]	412.6	[2]
Inventories	207.4	[1]	211.8	[2]
Prepaid expenses	27.1	[1]	25.6	[2]
Other current assets	23.8	[1]	24.2	[2]
Total current assets	869.1	[1]	924.6	[2]
Property, plant and equipment	2,153.60	[1]	2,174.20	[2]
Less accumulated depreciation and depletion	-978.1	[1]	-992.1	[2]
Property, plant and equipment, net	1,175.50	[1]	1,182.10	[2]
Goodwill	768.3	[1]	770.9	[2]
Intangible assets	210.2	[1]	212.1	[2]
Deferred income taxes	57.4	[1]	55.6	[2]
Other assets and deferred charges	79	[1]	81.4	[2]
Total assets	3,159.50	[1]	3,226.70	[2]
Current liabilities:
Short-term debt	6	[1]	5.6	[2]
Current maturities of long-term debt	0.4	[1]	0.3	[2]
Accounts payable	169	[1]	170.4	[2]
Other current liabilities	139.3	[1]	176.6	[2]
Total current liabilities	314.7	[1]	352.9	[2]
Long-term debt, net of unamortized discount	1,418.40	[1]	1,455.50	[2]
Deferred income taxes	313.1	[1]	314.5	[2]
Other non-current liabilities	214.3	[1]	214.9	[2]
Total liabilities	2,260.50	[1]	2,337.80	[2]
Shareholders' equity:
Common stock	4.8	[1]	4.8	[2]
Additional paid-in capital	375.5	[1]	373	[2]
Retained earnings	1,225.10	[1]	1,191.80	[2]
Accumulated other comprehensive loss	-139.4	[1]	-112.9	[2]
Less common stock held in treasury	-593.7	[1]	-593.7	[2]
Total MTI shareholders' equity	872.3	[1]	863	[2]
Non-controlling interest	26.7	[1]	25.9	[2]
Total shareholders' equity	899	[1]	888.9	[2]
Total liabilities and shareholders' equity	$3,159.50	[1]	$3,226.70	[2]
[1]	Unaudited
[2]	Condensed from audited financial statements

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015		Mar. 30, 2014
Operating Activities:
Consolidated net income	$36		$16.30
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	23.7		11.9
Other non-cash items	1.6		1.6
Net changes in operating assets and liabilities	-41.7		-14.6
Net cash provided by operating activities	19.6		15.2
Investing Activities:
Purchases of property, plant and equipment, net	-24.2		-11.3
Net purchases of short-term investments	-1.7		0.7
Net cash used in investing activities	-25.9		-10.6
Financing Activities:
Proceeds from issuance of long-term debt	2.5		0
Repayment of long-term debt	-40		-0.7
Net issuance (repayment) of short-term debt	0.4		0
Proceeds from issuance of stock under option plan	0.8		1.7
Excess tax benefits related to stock incentive programs	0.1		0.2
Dividends paid to non-controlling interest	-0.2		-0.3
Cash dividends paid	-1.8		-1.7
Net cash provided by (used in) financing activities	-38.2		-0.8
Effect of exchange rate changes on cash and cash equivalents	-11.2		-1.1
Net increase (decrease) in cash and cash equivalents	-55.7		2.7
Cash and cash equivalents at beginning of period	249.6	[1]	490.3
Cash and cash equivalents at end of period	193.9	[2]	493
Supplemental disclosure of cash flow information:
Interest paid	19.9		0
Income taxes paid	$13.50		$5.60
[1]	Condensed from audited financial statements
[2]	Unaudited

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 29, 2015
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. (the “Company”, “MTI”, “we”, or “us”) 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, 2014.  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 periods ended March 29, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015.
	Company Operations
	The Company is a resource- and technology-based company that develops, produces, and markets worldwide a broad range of specialty mineral, mineral-based and synthetic mineral products and supporting systems and services.  On May 9, 2014, the Company acquired AMCOL International Corporation (“AMCOL”).  See Note 2 to the Condensed Consolidated Financial Statements.
	The Company has 5 reportable segments: Specialty Minerals, Refractories, Performance Materials, Construction Technologies, and Energy Services.
	-The Specialty Minerals segment produces and sells the synthetic mineral product precipitated calcium carbonate ("PCC") and processed mineral product quicklime ("lime"), and mines mineral ores then processes and sells natural mineral products, primarily limestone and talc.
	-The Refractories segment produces and markets monolithic and shaped refractory materials and specialty products, services and application and measurement equipment, and calcium metal and metallurgical wire products.
	-The Performance Materials segment is a leading supplier of bentonite and bentonite-related products. This segment also supplies chromite and leonardite and operates more than 25 mining or production facilities worldwide.
	-The Construction Technologies segment provides products for non-residential construction, environmental and infrastructure projects worldwide.  It serves customers engaged in a broad range of construction projects, including site remediation, concrete waterproofing for underground structures, liquid containment on projects ranging from landfills to flood control, and drilling applications including foundation, slurry wall, tunneling, water well, and horizontal drilling.
	-The Energy Services segment provides services to improve the production, costs, compliance, and environmental impact of activities performed in oil and gas industry.  This segment offers a range of patented and unpatented technologies, products and services for all phases of oil and gas production, refining, and storage throughout the world.
	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 revenue recognition, valuation of accounts receivable, valuation of inventories, valuation of long-lived assets, goodwill and other intangible assets, pension plan assumptions, valuation of product liability and asset retirement obligation, income tax, income tax valuation allowances, and litigation and environmental liabilities. Actual results could differ from those estimates.

Business_Combination

Business Combination	3 Months Ended
	Mar. 29, 2015
Business Combination [Abstract]
Business Combination	Note 2.	Business Combination
	On May 9, 2014, pursuant to the Merger Agreement dated March 10, 2014, the Company acquired AMCOL, based in Hoffman Estates, Illinois, a leading international producer of specialty materials and related products and services for industrial and consumer markets. The Company and AMCOL are both world-renowned innovators in mineralogy, fine particle technology and polymer chemistry. This transaction brings together the global leaders in precipitated calcium carbonate and bentonite, creating an even more robust US-based international minerals supplier. The Company’s management believes that the acquisition of AMCOL will provide substantial synergies through enhanced operational cost efficiencies.
	The Company acquired AMCOL by completing a tender offer to purchase AMCOL’s outstanding shares of common stock and the subsequent merger of AMCOL with and into a wholly-owned subsidiary of MTI. At the expiration of the Company’s tender offer, each tendered share of AMCOL common stock was purchased for consideration equal to $45.75 in cash, and at the effective time of the back-end merger, each share of AMCOL common stock not tendered (other than shares owned by the Company or held by AMCOL in treasury) was converted into the right to receive consideration equal to $45.75 in cash. Upon completion of the merger, AMCOL became a wholly owned direct subsidiary of MTI. Through the tender offer and the merger, the Company paid $1,519.4 million in cash to acquire all of the outstanding shares of AMCOL.
	In connection with the acquisition of AMCOL, the Company entered into a $1,560.0 million senior secured term loan facility (the “Term Facility”), the net proceeds of which, together with the Company’s cash on hand, were used as cash consideration for the acquisition of AMCOL and to refinance certain existing indebtedness of the Company and AMCOL and to pay fees and expenses in connection with the foregoing.  See Note 8 to the Condensed Consolidated Financial Statements.
	The fair value of the total consideration transferred, net of cash acquired, was $1,802.3 million and comprised of the following:
			(millions of dollars)
	Cash consideration transferred to AMCOL shareholders		$	1,519.40
	AMCOL notes repaid at close			325.6
	Total consideration transferred to debt and equity holders			1,845.00
	Cash acquired			42.7
	Total consideration transferred to debt and equity holders, net of cash acquired		$	1,802.30
	The acquisition of AMCOL has been accounted for using the acquisition method of accounting, which requires, among other things, the assets acquired and liabilities assumed be recognized at their respective fair values as of the acquisition date.  As of March 29, 2015, the purchase price allocation remains preliminary as the Company completes its assessment of property, certain reserves including, environmental, legal, and tax matters, obligations and deferred taxes, as well as complete our review of AMCOL’s existing accounting policies.
	The following table summarizes the Company’s preliminary purchase price allocation for the AMCOL acquisition:
			Preliminary
			Allocation
			(millions of dollars)
	Accounts receivable		$	235.7
	Inventories			157.3
	Other current assets			65
	Mineral rights			535.5
	Plant, property and equipment			371.2
	Goodwill			708.1
	Intangible assets			214.3
	Other non-current assets			51.4
	Total assets acquired		$	2,338.50
	Accounts payable			66.4
	Accrued expenses			61.6
	Non-current deferred tax liability			322.3
	Other non-current liabilities			85.9
	Total liabilities assumed		$	536.2
	Net assets acquired		$	1,802.30
	The Company used the income, market, or cost approach (or a combination thereof) for the preliminary valuation, and used valuation inputs and analyses that were based on market participant assumptions. Market participants are considered to be buyers and sellers unrelated to the Company in the principal or most advantageous market for the asset or liability. For certain items, the carrying value was determined to be a reasonable approximation of fair value based on the information available. The Company’s estimates related to this valuation are considered to be critical accounting estimates because they are susceptible to change from period to period based on our judgments about a variety of factors and due to the uncontrollable variability of market factors underlying them.  For example, in performing assessments of the fair value of these assets, the Company makes judgments about the future performance business of the acquired business, economic, regulatory, and political conditions affecting the net assets acquired, appropriate risk-related rates for discounting estimated future cash flows, reasonable estimates of disposal values, and market royalty rate.
	Goodwill was calculated as the excess of the consideration transferred over the assets acquired and represents the estimated future economic benefits arising from other assets acquired that could not be individually identified and separately recognized.  The goodwill is primarily attributable to fair value of expected synergies from combining the MTI and AMCOL businesses and will be mainly allocated to Performance Materials and Construction Technologies segments. The allocation is expected to be completed during the second quarter of 2015.  Goodwill recognized as a result of this acquisition is not deductible for tax purpose.
	In connection with the acquisition, the Company recorded an additional deferred tax liability of $322.3 million with a corresponding increase to goodwill. The increase in deferred tax liability represents the tax effect of the difference between the estimated assigned fair value of the tangible and intangible assets and the tax basis of such assets.
	Mineral rights were valued using discounted cash flow method, a Level 3 fair value input. Plant, property and equipment were valued using the cost method adjusted for age and deterioration, also a Level 3 fair value input.
	Intangible assets acquired mainly included technology and tradenames. Technology was valued using relief-from royalty method, a Level 3 fair value input, with a weighted average amortization period of 12 years. Tradenames were valued using multi-period excess earnings, also a Level 3 fair value input, with a weighted average amortization period of 34 years.
	The Company incurred $3.4 million and $5.1 million of acquisition-related costs during the three months ended March 29, 2015 and March 30, 2014, respectively, which are reflected within the Acquisition related transaction and integration costs line of the Condensed Consolidated Statements of Income.
	The following table presents the unaudited pro forma summary of the Company’s Condensed Consolidated Statements of Income for the three months ended March 29, 2015, and March 30, 2014, which includes AMCOL’s Statement of Operations for the respective periods, as if the acquisition and related financing occurred on January 1, 2014. The following unaudited pro forma financial information is not necessarily indicative of the results of operations as they would have been had the transaction occurred on the assumed date, nor is it necessarily an indication of trends in future results for a number of reasons, including, but not limited to, differences between the assumptions used to prepare the pro forma information, potential synergies, and cost savings from operating efficiencies.
			Three Months Ended
	Pro Forma Results		Mar. 29,		Mar. 30,
			2015		2014
			(millions of dollars)
	Net sales		$	453.3	$	493.8
	Income before provision for taxes and equity in earnings			47.7		23.1
	Consolidated net Income			36		16
	The unaudited pro forma financial information presented in the table include certain adjustments that are factually supportable, directly related to business combination, and expected to have a continuing impact. These adjustments include, but are not limited to, depreciation, depletion, and amortization expense based upon the preliminary fair value step-up of depreciable fixed assets and amortizable intangibles assets, interest expense on acquisition related debt, acquisition related transaction and integration costs, and restructuring charges.

Earnings_Per_Share_EPS

Earnings Per Share (EPS)	3 Months Ended
	Mar. 29, 2015
Earnings Per Share (EPS) [Abstract]
Earnings Per Share (EPS)	Note 3.	Earnings Per Share (EPS)
	Basic earnings per share are based upon the weighted average number of common shares outstanding during the period.  Diluted earnings per share are 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.
	The following table sets forth the computation of basic and diluted earnings per share:
			Three Months Ended
			Mar. 29,		Mar. 30,
			2015		2014
			(in millions, except per share data)
	Net income attributable to MTI		$	35.1	$	15.6
	Weighted average shares outstanding			34.7		34.4
	Dilutive effect of stock options and stock units			0.2		0.3
	Weighted average shares outstanding, adjusted			34.9		34.7
	Basic earnings (Loss) per share attributable to MTI		$	1.01	$	0.45
	Diluted earnings (Loss) per share attributable to MTI		$	1.01	$	0.45
	Options to purchase 245,128 shares and 160,180 shares of common stock for the three-month periods ended March 29, 2015 and March 30, 2014, respectively, were not included in the computation of diluted earnings 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.

Restructuring_Charges

Restructuring Charges	3 Months Ended
	Mar. 29, 2015
Restructuring Charges [Abstract]
Restructuring Charges	Note 4.	Restructuring Charges
	During 2014, the Company announced a restructuring program that will result in a 10% permanent reduction of its workforce. The reductions include elimination of duplicate corporate functions, deployment of our shared service model, and consolidation and alignment of various corporate functions and regional locations across the Company.
	At March 29, 2015, we had $11.7 million included within accrued liabilities within our Condensed Consolidated Balance Sheets for cash expenditures needed to satisfy remaining obligations under these workforce reduction initiatives.  The Company expects to pay these amounts by the end of December 2015.
	The following table is a reconciliation of our restructuring liability balance as of March 29, 2014:
			(millions of dollars)
	Restructuring liability, December 31, 2014		$	14.6
	Additional provisions			-
	Cash payments			(2.9	)
	Restructuring liability,  March 29, 2015		$	11.7

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 29, 2015
Income Taxes [Abstract]
Income Taxes	Note 5.	Income Taxes
	As of March 29, 2015, the Company had approximately $5.1 million of total unrecognized income tax benefits. Included in this amount were a total of $2.6 million of unrecognized income tax benefits that, if recognized, would affect the Company’s effective tax rate. While it is expected that the amount of unrecognized tax benefits will change in the next 12 months, the Company does not expect the change to have a significant impact on the results of operations or the financial position of the Company.
	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 net increase of approximately $0.1 million during the three months ended March 29, 2015, and had an accrued balance of $1.4 million of interest and penalties as of March 29, 2015.
	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 income tax examinations by tax authorities for years prior to 2007.
	Provision for taxes was $12.1 million as compared to $7.0 million in the prior year. The effective tax rate was 25.4% as compared to 30.0% in prior year. The lower effective tax rate was primarily due to a change in the mix of earnings, tax benefits on one-time charges at a higher rate, and higher depletion deductions.

Inventories

Inventories	3 Months Ended
	Mar. 29, 2015
Inventories [Abstract]
Inventories	Note 6.	Inventories
	The following is a summary of inventories by major category:
			Mar. 29,		Dec. 31,
			2015		2014
			(millions of dollars)
	Raw materials		$	84.5	$	85.9
	Work-in-process			7.1		6.7
	Finished goods			85.9		88.7
	Packaging and supplies			29.9		30.5
	Total inventories		$	207.4	$	211.8

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 29, 2015
Goodwill and Other Intangible Assets [Abstract]
Goodwill and Other Intangible Assets	Note 7.	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 $768.3 million, and $770.9 million as of March 29, 2015 and December 31, 2014, respectively.  The net change in goodwill since December 31, 2014 was attributable to the effect of foreign exchange.
	Acquired intangible assets subject to amortization were as follows:
			Mar. 29, 2015				Dec. 31, 2014
			Gross		Accumulated		Gross		Accumulated
			Carrying		Amortization		Carrying		Amortization
			Amount				Amount
			(millions of dollars)
	Tradenames		$	191.2	$	5.1	$	191.2	$	3.7
	Technology			18.7		1.4		18.7		1
	Patents and trademarks			6.4		4.1		6.4		4
	Customer relationships			4.4		0.1		4.4		0.1
	Customer lists			2.9		2.7		2.9		2.7
			$	223.6	$	13.4	$	223.6	$	11.5
	The weighted average amortization period for acquired intangible assets subject to amortization is approximately 28  years. Estimated amortization expense is $7.9 million for 2015–2016, $7.7 million for 2017, $7.5 million for 2018-2020, and $164.2 million thereafter.

LongTerm_Debt_and_Commitments

Long-Term Debt and Commitments	3 Months Ended
	Mar. 29, 2015
Long-Term Debt and Commitments [Abstract]
Long-Term Debt and Commitments	Note 8.	Long-Term Debt and Commitments
	The following is a summary of long-term debt:
			Mar. 29,		Dec. 31,
			2015		2014
			(millions of dollars)
	Term Loan Facilitydue May 9, 2021, net of unamortized discount of $13.6 and $14.2, respectively		$	1,414.60	$	1,454.00
	China Loan Facilities			4.2		1.8
	Total		$	1,418.80	$	1,455.80
	Less: Current maturities			0.4		0.3
	Long-term debt		$	1,418.40	$	1,455.50
	On May 9, 2014, in connection with the acquisition of AMCOL, the Company entered into a credit agreement providing for the $1,560 million Term Facility and a $200 million senior secured revolving credit facility (the “Revolving Facility” and, together with the Term Facility, the “Facilities”).  During the first quarter of 2015, the Company repaid $40 million in principal on the Term Facility.  As of March 29, 2015, the Revolving Facility was unused.
	During 2014, the Company entered into three committed loan facilities for the funding of new manufacturing facilities in China. The loan facilities are for a combined 73.8 million RMB and $1.8 million with an availability period until June 20, 2015. The Company has borrowed $4.2 million on these facilities as of March 29, 2015.  Principal will be repaid in accordance with the payment schedules beginning in 2015 and ending in 2018.
	As of March 29, 2015, the Company had $39.1 million in uncommitted short-term bank credit lines, of which approximately $6.0 million was in use.

Benefit_Plans

Benefit Plans	3 Months Ended
	Mar. 29, 2015
Benefit Plans [Abstract]
Benefit Plans	Note 9.	Benefit Plans
	The Company and its subsidiaries have pension plans covering the majority of eligible employees on a contributory or non-contributory basis.  The Company also provides postretirement health care and life insurance benefits for the majority of its U.S. retired employees. 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 less than 25% of our total benefit obligation.
	In May 2014, as a part of its acquisition of AMCOL businesses, the Company assumed AMCOL’s qualified defined benefit pension plan and supplementary pension plan (SERP). The defined benefit pension plan covered substantially all of AMCOL’s domestic employees hired before January 1, 2004. The SERP plan provides benefit in excess of qualified plan limitation for certain employees. For more information on the AMCOL acquisition, see Note 2 to the Condensed Consolidated Financial Statements.
	Components of Net Periodic Benefit Cost
			Pension Benefits
			Three Months Ended
			Mar. 29,			Mar. 30,
			2015			2014
			(millions of dollars)
	Service cost		$	2.6		$	2
	Interest cost			3.9			3.1
	Expected return on plan assets			(5.1	)		(4.3	)
	Amortization:
	Prior service cost			0.3			0.3
	Recognized net actuarial loss			2.8			1.7
	Net periodic benefit cost		$	4.5		$	2.8
			Other Benefits
			Three Months Ended
			Mar. 29,			Mar. 30,
			2015			2014
				(millions of dollars)
	Service cost		$	0.1		$	0.1
	Interest cost			0.1			0.1
	Amortization:
	Prior service cost			(0.8	)		(0.8	)
	Recognized net actuarial (gain)/loss			-			-
	Net periodic benefit cost		$	(0.6	)	$	(0.6	)
	Amortization amounts of prior service costs and recognized net actuarial losses are recorded, net of tax, as increases to accumulated other comprehensive income.
	Employer Contributions
	The Company expects to contribute approximately $10.0 million to its pension plans and $1.0 million to its other postretirement benefit plans in 2015. As of March 29, 2015, $1.0 million has been contributed to the pension plans and approximately $0.2 million has been contributed to the other postretirement benefit plans.

Comprehensive_Income

Comprehensive Income	3 Months Ended
	Mar. 29, 2015
Comprehensive Income [Abstract]
Comprehensive Income	Note 10.	Comprehensive Income
	The following table summarizes the amounts reclassified out of accumulated other comprehensive income (loss) attributable to the Company:
			Three Months Ended
	Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss)		Mar. 29,			Mar. 30,
			2015			2014
			(millions of dollars)
	Amortization of pension items:
	Pre-tax amount		$	2.3		$	1.2
	Tax			(0.9	)		(0.4	)
	Net of tax		$	1.4		$	0.8
	The pre-tax amounts in the table above are included within the components of net periodic pension benefit cost (see Note 9 to the Condensed Consolidated Financial Statements) and the tax amounts are included within provision for taxes on income line within Condensed Consolidated Statements of Income.
	The major components of accumulated other comprehensive income, net of related tax, attributable to MTI are as follows:
			Foreign Currency			Unrecognized			Net Gain		Total
			Translation			Pension Costs			on Cash
			Adjustment						Flow
									Hedges
			(millions of dollars)
	Balance as of December 31, 2014		$	(33.4	)	$	(82.1	)	$	2.6	$	(112.9	)
	Other comprehensive income (loss) before reclassifications			(27.9	)		-			-		(27.9	)
	Amounts reclassified from AOCI			-			1.4			-		1.4
	Net current period other comprehensive income (loss)			(27.9	)		1.4			-		(26.5	)
	Balance as of March 29, 2015		$	(61.3	)	$	(80.7	)	$	2.6	$	(139.4	)

Accounting_for_Asset_Retiremen

Accounting for Asset Retirement Obligations	3 Months Ended
	Mar. 29, 2015
Accounting for Asset Retirement Obligations [Abstract]
Accounting for Asset Retirement Obligations	Note 11.	Accounting for Asset Retirement Obligations
	The Company records asset retirement obligations for situations in which the Company will be required to incur costs to retire tangible long-lived assets. The fair value of the 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 Company also records liabilities related to land reclamation as a part of asset retirement obligations. 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.  The obligation is adjusted to reflect the passage of time, mining activities, and changes in estimated future cash outflows.
	The following is a reconciliation of asset retirement obligations as of March 29, 2015:
			(millions of dollars)
	Asset retirement liability, December 31, 2014		$	23
	Accretion expense			0.4
	Reversals			(0.1	)
	Payments			(0.3	)
	Foreign currency translation			(0.3	)
	Asset retirement liability,  March 29, 2015		$	22.7
	The asset retirement costs are capitalized as part of the carrying amount of the associated asset. The current portion of the liability of approximately $2.0 million is included in other current liabilities and the long-term portion of the liability of approximately $20.7 million is included in other non-current liabilities in the Condensed Consolidated Balance Sheet as of March 29, 2015.

Contingencies

Contingencies	3 Months Ended
	Mar. 29, 2015
Contingencies [Abstract]
Contingencies	Note 12.	Contingencies
	We are party to a number of lawsuits arising in the normal course of our business.
	On May 8, 2013, Armada (Singapore) PTE Limited, an ocean shipping company now in bankruptcy ("Armada") filed a case in federal court in the Northern District of Illinois against AMCOL and certain of its subsidiaries (Armada (Singapore) PTE Limited v. AMCOL International Corp., et al., United States District Court for the Northern District of Illinois, Case No. 13 CV 3455). We acquired AMCOL and its subsidiaries on May 9, 2014. A co-defendant is Ashapura Minechem Limited, a company located in Mumbai, India (“AML”). During the relevant time period, 2008-2010, AMCOL owned slightly over 20% of the outstanding AML stock through December 2009, after which it owned approximately 19%. In 2008, AML entered into two contracts of affreightment (“COA”) with Armada for over 60 ship loads of bauxite from India to China. After one shipment, AML made no further shipments, which led Armada to file arbitrations in London against AML, one for each COA. AML did not appear in the London arbitrations and default awards of approximately $70 million were entered. The litigation filed by Armada against AMCOL and AML relates to these awards, which AML has not paid. The substance of the allegations by Armada is that AML and AMCOL engaged in illegal conduct to thwart Armada’s efforts to collect the arbitration award. The counts in the complaint include both violations of the Illinois Fraudulent Transfer laws as well as federal RICO violations. The lawsuit seeks money damages as well injunctive relief. The litigation is in the discovery phase. Fact discovery and expert discovery is currently scheduled to last through June 12, 2015. At this time, considering this case is in the discovery phase, management cannot estimate potential losses (if any) and therefore has not established any provisions.
	The Company’s Construction Technologies segment is respondent in an arbitration requested by Bentonit Uniăo Nordeste Indústria e Comércio Ltda. (“BUN”), the Company’s joint venture partner in Brazil, alleging a breach of the joint venture agreement and claiming, among other things, damages in the amount of 34 million Brazilian real.  Written closing arguments have been submitted to the arbitration panel and the Company believes that the BUN claim is unsubstantiated.  At this time management anticipates that the amount of the Company's liability, if any, will not have a material effect on its financial position or results of operations.
	Certain of the Company's subsidiaries are among numerous defendants in a number of cases seeking damages for exposure to silica or to asbestos containing materials. The Company currently has 77 pending silica cases and 13 pending asbestos cases. These totals include 5 silica cases against AMCOL International Corporation and/or its subsidiary, American Colloid Company, that were pending on the date we acquired AMCOL.  To date, 1,419 silica cases and 42 asbestos cases have been dismissed, not including any lawsuits against AMCOL or American Colloid Company dismissed prior to our acquisition of AMCOL. Three new asbestos cases and no new silica cases were filed in the first quarter of 2015.   Three asbestos cases, including the only one against AMCOL International Corporation, and twenty-five silica cases against AMCOL International Corporation were dismissed during the first quarter of 2015.
	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.  Additional claims of this nature may be made against the Company or its subsidiaries.  At this time management anticipates that the amount of the Company's liability, if any, and the cost of defending such claims, will not have a material effect on its financial position or results of operations.
	The Company has settled only one silica lawsuit, for a nominal amount, and no asbestos lawsuits to date (not including any that may have been settled by AMCOL prior to completion of the acquisition). We are unable to state an amount or range of amounts claimed in any of the lawsuits because state court pleading practices do not require identifying the amount of the claimed damage. The aggregate cost to the Company for the legal defense of these cases since inception continues to be insignificant. The majority of the costs of defense for these cases, excluding cases against AMCOL or American Colloid, are reimbursed by Pfizer Inc. pursuant to the terms of certain agreements entered into in connection with the Company's initial public offering in 1992. Of the 13 pending asbestos cases all allege liability based on products sold largely or entirely prior to the initial public offering, and for which the Company is therefore entitled to indemnification pursuant to such agreements. Our experience has been that the Company is not liable to plaintiffs in any of these lawsuits and the Company does not expect to pay any settlements or jury verdicts in these lawsuits.
	Environmental Matters
	On April 9, 2003, the Connecticut Department of Environmental Protection issued an administrative consent order relating to our Canaan, Connecticut, plant where both our Refractories segment and Specialty Minerals segment have operations. We agreed to the order, which includes provisions requiring investigation and remediation of contamination associated with historic use of polychlorinated biphenyls ("PCBs") and mercury at a portion of the site. We have completed the required investigations and submitted several reports characterizing the contamination and assessing site-specific risks. We are awaiting regulators’ approval of the risk assessment report, which will form the basis for a proposal by the Company concerning eventual remediation.
	We believe that the most likely form of overall site remediation will be to leave the existing contamination in place (with some limited soil removal), encapsulate it, and monitor the effectiveness of the encapsulation. We anticipate that a substantial portion of the remediation cost will be borne by the United States based on its involvement at the site from 1942 – 1964, as historic documentation indicates that PCBs and mercury were first used at the facility at a time of U.S. government ownership for production of materials needed by the military. Pursuant to a Consent Decree entered on October 24, 2014, the United States paid the Company $2.3 million in the 4th quarter of 2014 to resolve the Company’s claim for response costs for investigation and initial remediation activities at this facility through October 24, 2014. Contribution by the United States to any future costs of investigation or additional remediation has, by agreement, been left unresolved. Though the cost of the likely remediation remains uncertain pending completion of the phased remediation decision process, we have estimated that the Company’s share of the cost of the encapsulation and limited soil removal described above would approximate $0.4 million, which has been accrued as of March 29, 2015.
	The Company is evaluating options for upgrading the wastewater treatment facilities at its Adams, Massachusetts plant. This work has been undertaken pursuant to an administrative Consent Order originally issued by the Massachusetts Department of Environmental Protection (“DEP”) on June 18, 2002. This order was amended on June 1, 2009 and on June 2, 2010. The amended Order includes the investigation by January 1, 2022 of options for ensuring that the facility's wastewater treatment ponds will not result in unpermitted discharge to groundwater. Additional requirements of the amendment include the submittal by July 1, 2022 of a plan for closure of a historic lime solids disposal area. Preliminary engineering reviews completed in 2005 indicate that the estimated cost of wastewater treatment upgrades to operate this facility beyond 2024 may be between $6 million and $8 million. The Company estimates that the remaining remediation costs would approximate $0.4 million, which has been accrued as of March 29, 2015.
	The Company and its subsidiaries are not party to any other material pending legal proceedings, other than routine litigation incidental to their businesses.

Noncontrolling_interests

Non-controlling interests	3 Months Ended
	Mar. 29, 2015
Non-Controlling Interests [Abstract]
Noncontrolling interests	Note 13.	Non-controlling interests
	The following is a reconciliation of beginning and ending total equity, equity attributable to MTI, and equity attributable to non-controlling interests:
			Equity Attributable to MTI
			Common		Additional		Retained			Accumulated			Treasury			Non-controlling			Total
			Stock		Paid-in		Earnings			Other			Stock			Interests
					Capital					Comprehensive
										Income (Loss)
			(millions of dollars)
	Balance as of December 31, 2014		$	4.8	$	373	$	1,191.80		$	(112.9	)	$	(593.7	)	$	$25.90		$	888.9
	Net income			-		-		35.1			-			-			0.9			36
	Other comprehensive income (loss)			-		-		-			(26.5	)		-			0.1			(26.4	)
	Dividends declared			-		-		(1.8	)		-			-			-			(1.8	)
	Dividends to non-controlling interest			-		-		-			-			-			(0.2	)		(0.2	)
	Issuance of shares pursuant to employee stock compensation plans			-		0.7		-			-			-			-			0.7
	Income tax benefit arising from employee stock compensation plans			-		0.5		-			-			-			-			0.5
	Stock based compensation			-		1.3		-			-			-			-			1.3
	Balance as of March 29, 2015		$	4.8	$	375.5	$	1,225.10		$	(139.4	)	$	(593.7	)	$	26.7		$	899
	The income attributable to non-controlling interests for the three-month periods ended March 29, 2015 and March 30, 2014 was from continuing operations. The remainder of income was attributable to MTI.

Segment_and_Related_Informatio

Segment and Related Information	3 Months Ended
	Mar. 29, 2015
Segment and Related Information [Abstract]
Segment and Related Information	Note 14.	Segment and Related Information
	The Company has 5 reportable segments: Specialty Minerals, Refractories, Performance Materials, Construction Technologies, and Energy Services, compared to 2 reportable segments in the prior year (Specialty Minerals and Refractories).  See Note 1 to the Condensed Consolidated Financial Statements.  Segment information is as follows:
			Three Months Ended
			Mar. 29,			Mar. 30,
			2015			2014
			(millions of dollars)
	Net Sales
	Specialty Minerals		$	154		$	159.7
	Refractories			73.9			84.7
	Performance Materials			127.9			-
	Construction Technologies			38.9			-
	Energy Services			58.6			-
	Total		$	453.3		$	244.4
	Income from Operations
	Specialty Minerals		$	23.1		$	21.5
	Refractories			8.3			9.2
	Performance Materials			23.8			-
	Construction Technologies			4.1			-
	Energy Services			5.8			-
	Total		$	65.1		$	30.7
	A reconciliation of the totals reported for the operating segments to the applicable line items in the condensed consolidated financial statements is as follows:
			Income from operations before
			provision for taxes on income
			Three Months Ended
			Mar. 29,			Mar. 30,
			2015			2014
			(millions of dollars)
	Income from operations for reportable segments		$	65.1		$	30.7
	Acquisition Related Transaction and Integration Costs			(3.4	)		(5.1	)
	Unallocated corporate expenses			(1.8	)		(2.0	)
	Consolidated income from operations			59.9			23.6
	Non-operating deductions, net			(12.2	)		(0.3	)
	Income from continuing operations before provision for taxes on income		$	47.7		$	23.3
	The Company's sales by product category are as follows:
			Three Months Ended
			Mar. 29,			Mar. 30,
			2015			2014
			(millions of dollars)
	Paper PCC		$	105.2		$	112.8
	Specialty PCC			16.5			16.3
	Talc			13.8			13.4
	Ground Calcium Carbonate			18.5			17.2
	Refractory Products			58.3			63.1
	Metallurgical Products			15.6			21.6
	Metalcasting			65.2			-
	Household, Personal Care and Specialty Products			41.8			-
	Basic Minerals and Other Products			20.9			-
	Environmental Products			11.4			-
	Building Materials and Other Products			27.5			-
	Energy Services			58.6			-
	Total		$	453.3		$	244.4

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 29, 2015
Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements have been prepared by management of Minerals Technologies Inc. (the “Company”, “MTI”, “we”, or “us”) 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, 2014.  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 periods ended March 29, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015.
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 revenue recognition, valuation of accounts receivable, valuation of inventories, valuation of long-lived assets, goodwill and other intangible assets, pension plan assumptions, valuation of product liability and asset retirement obligation, income tax, income tax valuation allowances, and litigation and environmental liabilities. Actual results could differ from those estimates.

Business_Combination_Tables

Business Combination (Tables)	3 Months Ended
	Mar. 29, 2015
Business Combination [Abstract]
Schedule total consideration transferred	The fair value of the total consideration transferred, net of cash acquired, was $1,802.3 million and comprised of the following:
		(millions of dollars)
	Cash consideration transferred to AMCOL shareholders	$	1,519.40
	AMCOL notes repaid at close		325.6
	Total consideration transferred to debt and equity holders		1,845.00
	Cash acquired		42.7
	Total consideration transferred to debt and equity holders, net of cash acquired	$	1,802.30
Summary of preliminary purchase price allocation for the AMCOL acquisition	The following table summarizes the Company’s preliminary purchase price allocation for the AMCOL acquisition:
		Preliminary
		Allocation
		(millions of dollars)
	Accounts receivable	$	235.7
	Inventories		157.3
	Other current assets		65
	Mineral rights		535.5
	Plant, property and equipment		371.2
	Goodwill		708.1
	Intangible assets		214.3
	Other non-current assets		51.4
	Total assets acquired	$	2,338.50
	Accounts payable		66.4
	Accrued expenses		61.6
	Non-current deferred tax liability		322.3
	Other non-current liabilities		85.9
	Total liabilities assumed	$	536.2
	Net assets acquired	$	1,802.30
Unaudited pro forma summary of Condensed Consolidated Statements of Income	The following table presents the unaudited pro forma summary of the Company’s Condensed Consolidated Statements of Income for the three months ended March 29, 2015, and March 30, 2014, which includes AMCOL’s Statement of Operations for the respective periods, as if the acquisition and related financing occurred on January 1, 2014. The following unaudited pro forma financial information is not necessarily indicative of the results of operations as they would have been had the transaction occurred on the assumed date, nor is it necessarily an indication of trends in future results for a number of reasons, including, but not limited to, differences between the assumptions used to prepare the pro forma information, potential synergies, and cost savings from operating efficiencies.
		Three Months Ended
	Pro Forma Results	Mar. 29,		Mar. 30,
		2015		2014
		(millions of dollars)
	Net sales	$	453.3	$	493.8
	Income before provision for taxes and equity in earnings		47.7		23.1
	Consolidated net Income		36		16

Earnings_Per_Share_EPS_Tables

Earnings Per Share (EPS) (Tables)	3 Months Ended
	Mar. 29, 2015
Earnings Per Share (EPS) [Abstract]
Schedule of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted earnings per share:
		Three Months Ended
		Mar. 29,		Mar. 30,
		2015		2014
		(in millions, except per share data)
	Net income attributable to MTI	$	35.1	$	15.6
	Weighted average shares outstanding		34.7		34.4
	Dilutive effect of stock options and stock units		0.2		0.3
	Weighted average shares outstanding, adjusted		34.9		34.7
	Basic earnings (Loss) per share attributable to MTI	$	1.01	$	0.45
	Diluted earnings (Loss) per share attributable to MTI	$	1.01	$	0.45

Restructuring_Charges_Tables

Restructuring Charges (Tables)	3 Months Ended
	Mar. 29, 2015
Restructuring Charges [Abstract]
Reconciliation of restructuring liability	The following table is a reconciliation of our restructuring liability balance as of March 29, 2014:
		(millions of dollars)
	Restructuring liability, December 31, 2014	$	14.6
	Additional provisions		-
	Cash payments		(2.9	)
	Restructuring liability,  March 29, 2015	$	11.7

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 29, 2015
Inventories [Abstract]
Inventories by major category	The following is a summary of inventories by major category:
		Mar. 29,		Dec. 31,
		2015		2014
		(millions of dollars)
	Raw materials	$	84.5	$	85.9
	Work-in-process		7.1		6.7
	Finished goods		85.9		88.7
	Packaging and supplies		29.9		30.5
	Total inventories	$	207.4	$	211.8

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 29, 2015
Goodwill and Other Intangible Assets [Abstract]
Acquired intangible assets subject to amortization	Acquired intangible assets subject to amortization were as follows:
		Mar. 29, 2015				Dec. 31, 2014
		Gross		Accumulated		Gross		Accumulated
		Carrying		Amortization		Carrying		Amortization
		Amount				Amount
		(millions of dollars)
	Tradenames	$	191.2	$	5.1	$	191.2	$	3.7
	Technology		18.7		1.4		18.7		1
	Patents and trademarks		6.4		4.1		6.4		4
	Customer relationships		4.4		0.1		4.4		0.1
	Customer lists		2.9		2.7		2.9		2.7
		$	223.6	$	13.4	$	223.6	$	11.5

LongTerm_Debt_and_Commitments_

Long-Term Debt and Commitments (Tables)	3 Months Ended
	Mar. 29, 2015
Long-Term Debt and Commitments [Abstract]
Summary of long term debt	The following is a summary of long-term debt:
		Mar. 29,		Dec. 31,
		2015		2014
		(millions of dollars)
	Term Loan Facilitydue May 9, 2021, net of unamortized discount of $13.6 and $14.2, respectively	$	1,414.60	$	1,454.00
	China Loan Facilities		4.2		1.8
	Total	$	1,418.80	$	1,455.80
	Less: Current maturities		0.4		0.3
	Long-term debt	$	1,418.40	$	1,455.50

Benefit_Plans_Tables

Benefit Plans (Tables)	3 Months Ended
	Mar. 29, 2015
Benefit Plans [Abstract]
Components of net periodic benefit cost	Components of Net Periodic Benefit Cost
		Pension Benefits
		Three Months Ended
		Mar. 29,			Mar. 30,
		2015			2014
		(millions of dollars)
	Service cost	$	2.6		$	2
	Interest cost		3.9			3.1
	Expected return on plan assets		(5.1	)		(4.3	)
	Amortization:
	Prior service cost		0.3			0.3
	Recognized net actuarial loss		2.8			1.7
	Net periodic benefit cost	$	4.5		$	2.8
		Other Benefits
		Three Months Ended
		Mar. 29,			Mar. 30,
		2015			2014
			(millions of dollars)
	Service cost	$	0.1		$	0.1
	Interest cost		0.1			0.1
	Amortization:
	Prior service cost		(0.8	)		(0.8	)
	Recognized net actuarial (gain)/loss		-			-
	Net periodic benefit cost	$	(0.6	)	$	(0.6	)

Comprehensive_Income_Tables

Comprehensive Income (Tables)	3 Months Ended
	Mar. 29, 2015
Comprehensive Income [Abstract]
Reclassifications out of accumulated other comprehensive income, net of related tax		Three Months Ended
	Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss)	Mar. 29,			Mar. 30,
		2015			2014
		(millions of dollars)
	Amortization of pension items:
	Pre-tax amount	$	2.3		$	1.2
	Tax		(0.9	)		(0.4	)
	Net of tax	$	1.4		$	0.8
Accumulated other comprehensive income, net of related tax, attributable to MTI	The major components of accumulated other comprehensive income, net of related tax, attributable to MTI are as follows:
		Foreign Currency			Unrecognized			Net Gain		Total
		Translation			Pension Costs			on Cash
		Adjustment						Flow
								Hedges
		(millions of dollars)
	Balance as of December 31, 2014	$	(33.4	)	$	(82.1	)	$	2.6	$	(112.9	)
	Other comprehensive income (loss) before reclassifications		(27.9	)		-			-		(27.9	)
	Amounts reclassified from AOCI		-			1.4			-		1.4
	Net current period other comprehensive income (loss)		(27.9	)		1.4			-		(26.5	)
	Balance as of March 29, 2015	$	(61.3	)	$	(80.7	)	$	2.6	$	(139.4	)

Accounting_for_Asset_Retiremen1

Accounting for Asset Retirement Obligations (Tables)	3 Months Ended
	Mar. 29, 2015
Accounting for Asset Retirement Obligations [Abstract]
Reconciliation of asset retirement obligations	The following is a reconciliation of asset retirement obligations as of March 29, 2015:
		(millions of dollars)
	Asset retirement liability, December 31, 2014	$	23
	Accretion expense		0.4
	Reversals		(0.1	)
	Payments		(0.3	)
	Foreign currency translation		(0.3	)
	Asset retirement liability,  March 29, 2015	$	22.7

Noncontrolling_interests_Table

Non-controlling interests (Tables)	3 Months Ended
	Mar. 29, 2015
Non-Controlling Interests [Abstract]
Total equity, equity attributable To MTI, and equity attributable to noncontrolling interests	The following is a reconciliation of beginning and ending total equity, equity attributable to MTI, and equity attributable to non-controlling interests:
		Equity Attributable to MTI
		Common		Additional		Retained			Accumulated			Treasury			Non-controlling			Total
		Stock		Paid-in		Earnings			Other			Stock			Interests
				Capital					Comprehensive
									Income (Loss)
		(millions of dollars)
	Balance as of December 31, 2014	$	4.8	$	373	$	1,191.80		$	(112.9	)	$	(593.7	)	$	$25.90		$	888.9
	Net income		-		-		35.1			-			-			0.9			36
	Other comprehensive income (loss)		-		-		-			(26.5	)		-			0.1			(26.4	)
	Dividends declared		-		-		(1.8	)		-			-			-			(1.8	)
	Dividends to non-controlling interest		-		-		-			-			-			(0.2	)		(0.2	)
	Issuance of shares pursuant to employee stock compensation plans		-		0.7		-			-			-			-			0.7
	Income tax benefit arising from employee stock compensation plans		-		0.5		-			-			-			-			0.5
	Stock based compensation		-		1.3		-			-			-			-			1.3
	Balance as of March 29, 2015	$	4.8	$	375.5	$	1,225.10		$	(139.4	)	$	(593.7	)	$	26.7		$	899

Segment_and_Related_Informatio1

Segment and Related Information (Tables)	3 Months Ended
	Mar. 29, 2015
Segment and Related Information [Abstract]
Segment and related information, net sales and income from operations	The Company has 5 reportable segments: Specialty Minerals, Refractories, Performance Materials, Construction Technologies, and Energy Services, compared to 2 reportable segments in the prior year (Specialty Minerals and Refractories).  See Note 1 to the Condensed Consolidated Financial Statements.  Segment information is as follows:
		Three Months Ended
		Mar. 29,			Mar. 30,
		2015			2014
		(millions of dollars)
	Net Sales
	Specialty Minerals	$	154		$	159.7
	Refractories		73.9			84.7
	Performance Materials		127.9			-
	Construction Technologies		38.9			-
	Energy Services		58.6			-
	Total	$	453.3		$	244.4
	Income from Operations
	Specialty Minerals	$	23.1		$	21.5
	Refractories		8.3			9.2
	Performance Materials		23.8			-
	Construction Technologies		4.1			-
	Energy Services		5.8			-
	Total	$	65.1		$	30.7
Segment and related information, reconciliation of operating income before income taxes	A reconciliation of the totals reported for the operating segments to the applicable line items in the condensed consolidated financial statements is as follows:
		Income from operations before
		provision for taxes on income
		Three Months Ended
		Mar. 29,			Mar. 30,
		2015			2014
		(millions of dollars)
	Income from operations for reportable segments	$	65.1		$	30.7
	Acquisition Related Transaction and Integration Costs		(3.4	)		(5.1	)
	Unallocated corporate expenses		(1.8	)		(2.0	)
	Consolidated income from operations		59.9			23.6
	Non-operating deductions, net		(12.2	)		(0.3	)
	Income from continuing operations before provision for taxes on income	$	47.7		$	23.3
Segment and related information, sales by product category	The Company's sales by product category are as follows:
		Three Months Ended
		Mar. 29,			Mar. 30,
		2015			2014
		(millions of dollars)
	Paper PCC	$	105.2		$	112.8
	Specialty PCC		16.5			16.3
	Talc		13.8			13.4
	Ground Calcium Carbonate		18.5			17.2
	Refractory Products		58.3			63.1
	Metallurgical Products		15.6			21.6
	Metalcasting		65.2			-
	Household, Personal Care and Specialty Products		41.8			-
	Basic Minerals and Other Products		20.9			-
	Environmental Products		11.4			-
	Building Materials and Other Products		27.5			-
	Energy Services		58.6			-
	Total	$	453.3		$	244.4

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Details)	3 Months Ended	12 Months Ended
	Mar. 29, 2015	Dec. 31, 2013
	Facility	Segment
	Segment
Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
Number of reportable segments	5	2
Minimum number of mining or production facilities	25

Business_Combination_Details

Business Combination (Details) (USD $)	3 Months Ended			0 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 29, 2015		Mar. 30, 2014	9-May-14	Dec. 31, 2014
Business Acquisition [Line Items]
Acquisition related costs	$3.40		$5.10
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill	768.3	[1]			770.9	[2]
AMCOL International Corporation [Member]
Business Acquisition [Line Items]
Consideration received (in dollars per share)				$45.75
Debt instrument face amount				1,560
Deferred tax liability on increase of goodwill				322.3
Acquisition related costs	3.4		5.1
Business Combination, Consideration Transferred [Abstract]
Cash consideration transferred to AMCOL shareholders				1,519.40
AMCOL notes repaid at close				325.6
Total consideration transferred to debt and equity holders				1,845
Cash acquired				42.7
Total consideration transferred to debt and equity holders, net of cash acquired				1,802.30
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable				235.7
Inventories				157.3
Other current assets				65
Mineral rights				535.5
Plant, property and equipment				371.2
Goodwill				708.1
Intangible assets				214.3
Other non-current assets				51.4
Total assets acquired				2,338.50
Accounts payable				66.4
Accrued expenses				61.6
Non-current deferred tax liability				322.3
Other non-current liabilities				85.9
Total liabilities assumed				536.2
Net assets acquired				1,802.30
Unaudited pro forma summary of Condensed Consolidated Statements of Income [Abstract]
Net sales	453.3		493.8
Income before provision for taxes and equity in earnings	47.7		23.1
Consolidated net Income	$36		$16
AMCOL International Corporation [Member] | Technology [Member]
Business Acquisition [Line Items]
Weighted average amortization period for acquired intangible assets				12 years
AMCOL International Corporation [Member] | Tradenames [Member]
Business Acquisition [Line Items]
Weighted average amortization period for acquired intangible assets				34 years
[1]	Unaudited
[2]	Condensed from audited financial statements

Earnings_Per_Share_EPS_Details

Earnings Per Share (EPS) (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Earnings Per Share (EPS) [Abstract]
Net income attributable to Minerals Technologies Inc. (MTI)	$35.10	$15.60
Weighted average shares outstanding (in shares)	34,700,000	34,400,000
Dilutive effect of stock options and stock units (in shares)	200,000	300,000
Weighted average shares outstanding, adjusted (in shares)	34,900,000	34,700,000
Basic earnings (Loss) per share attributable to MTI (in dollars per share)	$1.01	$0.45
Diluted earnings (Loss) per share attributable to MTI (in dollars per share)	$1.01	$0.45
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities not included in the weighted average commons shares outstanding calculation (in shares)	245,128	160,180

Restructuring_Charges_Details

Restructuring Charges (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Dec. 31, 2014
Restructuring Charges [Abstract]
Reduction in workforce (in hundredths)		10.00%
Restructuring liability, beginning of period	$14.60
Additional provisions	0
Cash payments	-2.9
Restructuring liability, end of period	$11.70

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Income Taxes [Abstract]
Amount of unrecognized tax benefits	$5.10
Unrecognized tax benefits that would impact effective tax rate	2.6
Unrecognized tax benefits, net increase in penalties and interest expense	0.1
Unrecognized tax benefits, accrued interest and penalties	1.4
Provision for taxes on income	$12.10	$7
Effective income tax rate (in hundredths)	25.40%	30.00%

Inventories_Details

Inventories (Details) (USD $)	Mar. 29, 2015		Dec. 31, 2014
In Millions, unless otherwise specified
Inventories [Abstract]
Raw materials	$84.50		$85.90
Work-in-process	7.1		6.7
Finished goods	85.9		88.7
Packaging and supplies	29.9		30.5
Total inventories	$207.40	[1]	$211.80	[2]
[1]	Unaudited
[2]	Condensed from audited financial statements

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015		Dec. 31, 2014
Goodwill and Other Intangible Assets [Abstract]
Goodwill	$768.30	[1]	$770.90	[2]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	223.6		223.6
Accumulated Amortization	13.4		11.5
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	191.2		191.2
Accumulated Amortization	5.1		3.7
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18.7		18.7
Accumulated Amortization	1.4		1
Patents & Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6.4		6.4
Accumulated Amortization	4.1		4
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4.4		4.4
Accumulated Amortization	0.1		0.1
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2.9		2.9
Accumulated Amortization	2.7		2.7
Acquired Finite-Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period for acquired intangible assets subject to amortization	28 years
Estimated amortization expense, 2015	7.9
Estimated amortization expense, 2016	7.9
Estimated amortization expense, 2017	7.7
Estimated amortization expense, 2018	7.5
Estimated amortization expense, 2019	7.5
Estimated amortization expense, 2020	7.5
Estimated amortization expense, thereafter	$164.20
[1]	Unaudited
[2]	Condensed from audited financial statements

LongTerm_Debt_and_Commitments_1

Long-Term Debt and Commitments (Details)	3 Months Ended					3 Months Ended		3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015		Mar. 30, 2014	Dec. 31, 2014		Mar. 29, 2015	Dec. 31, 2014	Mar. 29, 2015	Dec. 31, 2014	Dec. 31, 2014	Mar. 29, 2015
	USD ($)		USD ($)	USD ($)		Term Loan Facility due May 9, 2021, net of unamortized discount of $13.6 and $14.2, respectively	Term Loan Facility due May 9, 2021, net of unamortized discount of $13.6 and $14.2, respectively	China Loan facility [Member]	China Loan facility [Member]	China Loan facility [Member]	Revolving Credit Facility [Member]
						USD ($)	USD ($)	USD ($)	USD ($)	CNY	USD ($)
								Loan
Debt Instrument [Line Items]
Debt	$1,418.80			$1,455.80		$1,414.60	$1,454	$4.20	$1.80
Less: Current maturities	0.4	[1]		0.3	[2]
Long-term debt	1,418.40	[1]		1,455.50	[2]
Long-term debt, unamortized discount						13.6	14.2
Maturity date						9-May-21		31-Dec-18
Long-term debt, gross						1,560
Repayments of long-term debt	40		0.7			40
Number of committed loan facilities								3
Maximum borrowing capacity	39.1								1.8	73.8	200
Uncommitted short-term bank credit lines, amount outstanding	$6
Availability end date									20-Jun-15	20-Jun-15
[1]	Unaudited
[2]	Condensed from audited financial statements

Benefit_Plans_Details

Benefit Plans (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Employer Contributions [Abstract]
Maximum percentage of total benefit obligation for international pension plans (in hundredths)	25.00%
Pension Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	$2.60	$2
Interest cost	3.9	3.1
Expected return on plan assets	-5.1	-4.3
Amortization [Abstract]
Prior service cost	0.3	0.3
Recognized net actuarial (gain) loss	2.8	1.7
Net periodic benefit cost	4.5	2.8
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	10
Company contribution to benefit plans	1
Other Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0.1	0.1
Interest cost	0.1	0.1
Amortization [Abstract]
Prior service cost	-0.8	-0.8
Recognized net actuarial (gain) loss	0	0
Net periodic benefit cost	-0.6	-0.6
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	1
Company contribution to benefit plans	$0.20

Comprehensive_Income_Details

Comprehensive Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	($1.40)
Pension Costs [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	-1.4
Pension Costs [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pre-tax amount	2.3	1.2
Tax	-0.9	-0.4
Net of tax	$1.40	$0.80

Comprehensive_Income_Accumulat

Comprehensive Income, Accumulated Other Comprehensive Income, Net of Related Tax (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	($112.90)	[1]
Other comprehensive income (loss) before reclassifications	-27.9
Amounts reclassified from AOCI	1.4
Net current period other comprehensive income (loss)	-26.5
Balance at end of year	-139.4	[2]
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	-33.4
Other comprehensive income (loss) before reclassifications	-27.9
Amounts reclassified from AOCI	0
Net current period other comprehensive income (loss)	-27.9
Balance at end of year	-61.3
Unrecognized Pension Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	-82.1
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified from AOCI	1.4
Net current period other comprehensive income (loss)	1.4
Balance at end of year	-80.7
Net Gain on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	2.6
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified from AOCI	0
Net current period other comprehensive income (loss)	0
Balance at end of year	$2.60
[1]	Condensed from audited financial statements
[2]	Unaudited

Accounting_for_Asset_Retiremen2

Accounting for Asset Retirement Obligations (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015
Accounting for Asset Retirement Obligations [Abstract]
Asset retirement liability, beginning balance	$23
Accretion expense	0.4
Reversals	-0.1
Payments	-0.3
Foreign currency translation	-0.3
Asset retirement liability, ending balance	22.7
Asset retirement obligation current portion	2
Asset retirement obligation noncurrent portion	$20.70

Contingencies_Details

Contingencies (Details)	3 Months Ended			3 Months Ended				3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 29, 2015	Oct. 24, 2014	Mar. 29, 2015	Mar. 29, 2015	Mar. 29, 2015	Dec. 31, 2009	Mar. 29, 2015	Mar. 29, 2015	Mar. 29, 2015	Mar. 29, 2015
	USD ($)	BRL	USD ($)	Administrative Consent Order For Contamination Associated with Historic Use of PCBs [Member]	Administrative Consent Order For Installation of Groundwater Contamination System [Member]	AMCOL International Corporation [Member]	AMCOL International Corporation [Member]	Silica Cases [Member]	Silica Cases [Member]	Asbestos Cases [Member]	Asbestos Cases [Member]
	Load			USD ($)	USD ($)			Cases	AMCOL International Corporation [Member]	Cases	AMCOL International Corporation [Member]
	Contract								Cases		Cases
Loss Contingencies [Line Items]
Ownership interest (in hundredths)						19.00%	20.00%
Number of contracts entered	2	2
Number of ship loads	60	60
Default arbitration award	$70
Damages sought		34
Number of pending cases								77	5	13
Number of cases dismissed to date								1,419	25	42	1
Number of new cases filed during the quarter								0		3
Number of cases settle								1		0
Site Contingency [Line Items]
Location of plant				Canaan, Connecticut	Adams, Massachusetts plant
Consent decree paid by US government			2.3
Estimated accrued remediation cost				0.4	0.4
Estimated cost of wastewater treatment upgrades, lower range					6
Estimated cost of wastewater treatment upgrades, upper range					$8

Noncontrolling_interests_Detai

Non-controlling interests (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015		Mar. 30, 2014
Noncontrolling Interest [Line Items]
Balance	$888.90	[1]
Net income	36		16.3
Other comprehensive income (loss)	-26.4		2.8
Dividends declared	-1.8
Dividends to non-controlling interest	-0.2		-0.3
Issuance of shares pursuant to employee stock compensation plans	0.7
Income tax benefit arising from employee stock compensation plans	0.5
Stock based compensation	1.3
Balance	899	[2]
Common Stock [Member]
Noncontrolling Interest [Line Items]
Balance	4.8
Net income	0
Other comprehensive income (loss)	0
Dividends declared	0
Dividends to non-controlling interest	0
Issuance of shares pursuant to employee stock compensation plans	0
Income tax benefit arising from employee stock compensation plans	0
Stock based compensation	0
Balance	4.8
Additional Paid-in Capital [Member]
Noncontrolling Interest [Line Items]
Balance	373
Net income	0
Other comprehensive income (loss)	0
Dividends declared	0
Dividends to non-controlling interest	0
Issuance of shares pursuant to employee stock compensation plans	0.7
Income tax benefit arising from employee stock compensation plans	0.5
Stock based compensation	1.3
Balance	375.5
Retained Earnings [Member]
Noncontrolling Interest [Line Items]
Balance	1,191.80
Net income	35.1
Other comprehensive income (loss)	0
Dividends declared	-1.8
Dividends to non-controlling interest	0
Issuance of shares pursuant to employee stock compensation plans	0
Income tax benefit arising from employee stock compensation plans	0
Stock based compensation	0
Balance	1,225.10
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interest [Line Items]
Balance	-112.9
Net income	0
Other comprehensive income (loss)	-26.5
Dividends declared	0
Dividends to non-controlling interest	0
Issuance of shares pursuant to employee stock compensation plans	0
Income tax benefit arising from employee stock compensation plans	0
Stock based compensation	0
Balance	-139.4
Treasury Stock [Member]
Noncontrolling Interest [Line Items]
Balance	-593.7
Net income	0
Other comprehensive income (loss)	0
Dividends declared	0
Dividends to non-controlling interest	0
Issuance of shares pursuant to employee stock compensation plans	0
Income tax benefit arising from employee stock compensation plans	0
Stock based compensation	0
Balance	-593.7
Noncontrolling Interests [Member]
Noncontrolling Interest [Line Items]
Balance	25.9
Net income	0.9
Other comprehensive income (loss)	0.1
Dividends declared	0
Dividends to non-controlling interest	-0.2
Issuance of shares pursuant to employee stock compensation plans	0
Income tax benefit arising from employee stock compensation plans	0
Stock based compensation	0
Balance	$26.70
[1]	Condensed from audited financial statements
[2]	Unaudited

Segment_and_Related_Informatio2

Segment and Related Information (Details) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014	Dec. 31, 2013
	Segment		Segment
Segment Reporting Information [Line Items]
Number of reportable segments	5		2
Net Sales	$453.30	$244.40
Income from Operations	59.9	23.6
Reportable Segments [Member]
Segment Reporting Information [Line Items]
Income from Operations	65.1	30.7
Specialty Minerals [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	154	159.7
Income from Operations	23.1	21.5
Refractories [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	73.9	84.7
Income from Operations	8.3	9.2
Performance Materials [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	127.9	0
Income from Operations	23.8	0
Construction Technologies [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	38.9	0
Income from Operations	4.1	0
Energy Services [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	58.6	0
Income from Operations	$5.80	$0

Segment_and_Related_Informatio3

Segment and Related Information, Reconciliation of Operating Income Before Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Income from operations before provision for taxes on income [Abstract]
Income from operations	$59.90	$23.60
Acquisition Related Transaction and Integration Costs	-3.4	-5.1
Unallocated corporate expenses	-1.8	-2
Non-operating deductions, net	-12.2	-0.3
Income from continuing operations before provision for taxes on income	47.7	23.3
Reportable Segments [Member]
Income from operations before provision for taxes on income [Abstract]
Income from operations	$65.10	$30.70

Segment_and_Related_Informatio4

Segment and Related Information, Sales By Product Category (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Revenue from External Customer [Line Items]
Total net sales	$453.30	$244.40
Paper PCC [Member]
Revenue from External Customer [Line Items]
Total net sales	105.2	112.8
Specialty PCC [Member]
Revenue from External Customer [Line Items]
Total net sales	16.5	16.3
Talc [Member]
Revenue from External Customer [Line Items]
Total net sales	13.8	13.4
Ground Calcium Carbonate [Member]
Revenue from External Customer [Line Items]
Total net sales	18.5	17.2
Refractory Products [Member]
Revenue from External Customer [Line Items]
Total net sales	58.3	63.1
Metallurgical Products [Member]
Revenue from External Customer [Line Items]
Total net sales	15.6	21.6
Metalcasting [Member]
Revenue from External Customer [Line Items]
Total net sales	65.2	0
Household, Personal Care and Specialty Products [Member]
Revenue from External Customer [Line Items]
Total net sales	41.8	0
Basic Minerals and Other Products [Member]
Revenue from External Customer [Line Items]
Total net sales	20.9	0
Environmental Products [Member]
Revenue from External Customer [Line Items]
Total net sales	11.4	0
Building Materials and Other Products [Member]
Revenue from External Customer [Line Items]
Total net sales	27.5	0
Energy Services [Member]
Revenue from External Customer [Line Items]
Total net sales	$58.60	$0