Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total Revenues	$ 1,230.8	$ 982.4
Total Cost of Revenues	1,074.7	807.7
Gross Profit	156.1	174.7
Selling, general & administrative expenses	97.1	79.8
Acquisition and integration expenses	1.4	1.2
Other operating income, net	(2.3)	(5.6)
Earnings from Operations	59.9	99.3
Interest expense	40.5	27.4
Other nonoperating income, net	(10.8)	(9.5)
Earnings from continuing operations before income tax expense	30.2	81.4
Income tax expense	5.8	15.9
Earnings from continuing operations	24.4	65.5
Loss from discontinued operations, net of income tax benefit	(3.1)
Consolidated net earnings	21.3	65.5
Less: Net (loss) earnings attributable to noncontrolling interests	(0.1)	0.2
Net Earnings Attributable to Martin Marietta Materials, Inc.	21.4	65.3
Consolidated Comprehensive (Loss) Earnings:
(Loss) Earnings attributable to Martin Marietta Materials, Inc.	(10.2)	68.1
(Loss) Earnings attributable to noncontrolling interests	(0.1)	0.2
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (10.3)	$ 68.3
Net Earnings (Loss) Attributable to Martin Marietta Materials, Inc. Per Common Share
Basic from continuing operations attributable to common shareholders	$ 0.39	$ 1.05
Basic from discontinued operations attributable to common shareholders	(0.05)
Basic attributable to common shareholders	0.34	1.05
Diluted from continuing operations attributable to common shareholders	0.39	1.04
Diluted from discontinued operations attributable to common shareholders	(0.05)
Diluted attributable to common shareholders	$ 0.34	$ 1.04
Weighted-Average Common Shares Outstanding:
Basic	62.4	62.3
Diluted	62.6	62.5
Products and Services
Total Revenues	$ 1,147.8	$ 921.9
Total Cost of Revenues	991.9	746.0
Freight
Total Revenues	83.0	60.5
Total Cost of Revenues	$ 82.8	$ 61.7