Consolidated Statements of Earnings and Comprehensive Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net Sales	$ 917,942	$ 600,457	$ 1,899,557	$ 1,451,848
Freight and delivery revenues	85,781	64,863	202,021	158,707
Total revenues	1,003,723	665,320	2,101,578	1,610,555
Cost of sales	722,349	457,349	1,542,527	1,188,923
Freight and delivery costs	85,781	64,863	202,021	158,707
Total cost of revenues	808,130	522,212	1,744,548	1,347,630
Gross Profit	195,593	143,108	357,030	262,925
Selling, general & administrative expenses	48,427	37,140	119,239	112,632
Acquisition-related expenses, net	26,118	89	41,178	671
Other operating expenses (income), net	5,092	(2,964)	313	(5,535)
Earnings from Operations	115,956	108,843	196,300	155,157
Interest expense	19,805	13,518	44,954	40,633
Other nonoperating (income) and expenses, net	(1,841)	101	1,330	179
Earnings from continuing operations before taxes on income	97,992	95,224	150,016	114,345
Income tax expense	44,089	22,915	59,571	29,615
Earnings from Continuing Operations	53,903	72,309	90,445	84,730
Loss on discontinued operations, net of related tax benefit of $28, $185, $53 and $250, respectively	(69)	(271)	(140)	(454)
Consolidated net earnings	53,834	72,038	90,305	84,276
Less: Net earnings (loss) attributable to noncontrolling interests	91	202	(1,341)	(1,028)
Net Earnings Attributable to Martin Marietta Materials, Inc.	53,743	71,836	91,646	85,304
Net Earnings Attributable to Martin Marietta Materials, Inc.:
Earnings from continuing operations	53,812	72,107	91,786	85,758
Loss from discontinued operations	(69)	(271)	(140)	(454)
Net Earnings Attributable to Martin Marietta Materials, Inc.	53,743	71,836	91,646	85,304
Consolidated Comprehensive Earnings: (See Note 1)
Comprehensive earnings attributable to Martin Marietta	52,603	75,384	92,479	88,763
Earnings (Loss) attributable to noncontrolling interests	93	205	(1,337)	(1,020)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 52,696	$ 75,589	$ 91,142	$ 87,743
Net Earnings (Loss) Attributable to Martin Marietta Materials, Inc. Per Common Share:
Basic from continuing operations attributable to common shareholders	$ 0.80	$ 1.56	$ 1.71	$ 1.85
Discontinued operations attributable to common shareholders		$ (0.01)		$ (0.01)
Earnings Per Share, Basic, Total	$ 0.80	$ 1.55	$ 1.71	$ 1.84
Diluted from continuing operations attributable to common shareholders	$ 0.79	$ 1.55	$ 1.70	$ 1.85
Discontinued operations attributable to common shareholders		$ (0.01)		$ (0.01)
Earnings Per Share, Diluted, Total	$ 0.79	$ 1.54	$ 1.70	$ 1.84
Weighted-Average Common Shares Outstanding:
Basic	67,086	46,244	53,342	46,134
Diluted	67,495	46,349	53,559	46,261
Cash Dividends Per Common Share	$ 0.40	$ 0.40	$ 1.20	$ 1.20