Consolidated Statements of Earnings and Comprehensive Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net Sales	$ 631,876us-gaap_SalesRevenueGoodsNet	$ 379,678us-gaap_SalesRevenueGoodsNet
Freight and delivery revenues	59,471us-gaap_ShippingAndHandlingRevenue	48,951us-gaap_ShippingAndHandlingRevenue
Total revenues	691,347us-gaap_SalesRevenueNet	428,629us-gaap_SalesRevenueNet
Cost of sales	557,615us-gaap_CostOfGoodsSold	353,843us-gaap_CostOfGoodsSold
Freight and delivery costs	59,471	48,951
Total cost of revenues	617,086us-gaap_CostOfGoodsAndServicesSold	402,794us-gaap_CostOfGoodsAndServicesSold
Gross Profit	74,261us-gaap_GrossProfit	25,835us-gaap_GrossProfit
Selling, general & administrative expenses	49,450	34,247
Acquisition-related expenses, net	1,604	9,512
Other operating income, net	(2,364)us-gaap_OtherOperatingIncomeExpenseNet	(2,026)us-gaap_OtherOperatingIncomeExpenseNet
Earnings (Loss) from Operations	25,571us-gaap_OperatingIncomeLoss	(15,898)us-gaap_OperatingIncomeLoss
Interest expense	19,331us-gaap_InterestExpense	12,201us-gaap_InterestExpense
Other nonoperating expenses, net	893us-gaap_OtherNonoperatingIncomeExpense	3,463us-gaap_OtherNonoperatingIncomeExpense
Earnings (Loss) from continuing operations before taxes on income	5,347	(31,562)
Income tax benefit	(812)us-gaap_IncomeTaxExpenseBenefit	(8,424)us-gaap_IncomeTaxExpenseBenefit
Earnings (Loss) from Continuing Operations	6,159	(23,138)
Loss on discontinued operations, net of related tax benefit of $1		(15)
Consolidated net earnings (loss)	6,159us-gaap_ProfitLoss	(23,153)us-gaap_ProfitLoss
Less: Net earnings (loss) attributable to noncontrolling interests	33	(1,535)
Net Earnings (Loss) Attributable to Martin Marietta Materials, Inc.	6,126us-gaap_NetIncomeLoss	(21,618)us-gaap_NetIncomeLoss
Net Earnings (Loss) Attributable to Martin Marietta Materials, Inc.:
Earnings (Loss) from continuing operations	6,126	(21,603)
Loss from discontinued operations		(15)
Net Earnings (Loss) Attributable to Martin Marietta Materials, Inc.	6,126us-gaap_NetIncomeLoss	(21,618)us-gaap_NetIncomeLoss
Consolidated Comprehensive Earnings (Loss): (See Note 1)
Earnings (Loss) attributable to Martin Marietta Materials, Inc.	5,562us-gaap_ComprehensiveIncomeNetOfTax	(20,248)us-gaap_ComprehensiveIncomeNetOfTax
Earnings (Loss) attributable to noncontrolling interests	35	(1,534)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 5,597	$ (21,782)
Net Earnings (Loss) Attributable to Martin Marietta Materials, Inc. per common share
Basic from continuing operations attributable to common shareholders	$ 0.07	$ (0.47)
Earnings Per Share, Basic, Total	$ 0.07us-gaap_EarningsPerShareBasic	$ (0.47)us-gaap_EarningsPerShareBasic
Diluted from continuing operations attributable to common shareholders	$ 0.07	$ (0.47)
Earnings Per Share, Diluted, Total	$ 0.07us-gaap_EarningsPerShareDiluted	$ (0.47)us-gaap_EarningsPerShareDiluted
Weighted-Average Common Shares Outstanding:
Basic	67,411	46,315
Diluted	67,676	46,315
Cash Dividends Per Common Share	$ 0.40	$ 0.40

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460