Bluegrass Acquisition - Business Acquisition, Pro Forma Information (Details) - Bluegrass Materials Company $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($) $ / shares
Business Acquisition [Line Items]
Total revenues	$ 3,279,455
Net earnings attributable to Martin Marietta	$ 399,113
Diluted EPS \| $ / shares	$ 6.31

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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