<SEC-DOCUMENT>0001564590-21-011525.txt : 20210308
<SEC-HEADER>0001564590-21-011525.hdr.sgml : 20210308
<ACCEPTANCE-DATETIME>20210308171619
ACCESSION NUMBER:		0001564590-21-011525
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20210304
ITEM INFORMATION:		Mine Safety - Reporting of Shutdowns and Patterns of Violations
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20210308
DATE AS OF CHANGE:		20210308

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARTIN MARIETTA MATERIALS INC
		CENTRAL INDEX KEY:			0000916076
		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
		IRS NUMBER:				561848578
		STATE OF INCORPORATION:			NC
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12744
		FILM NUMBER:		21722925

	BUSINESS ADDRESS:	
		STREET 1:		2710 WYCLIFF ROAD
		CITY:			RALEIGH
		STATE:			NC
		ZIP:			27607
		BUSINESS PHONE:		919-781-4550

	MAIL ADDRESS:	
		STREET 1:		2710 WYCLIFF ROAD
		CITY:			RALEIGH
		STATE:			NC
		ZIP:			27607
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>mlm-8k_20210304.htm
<DESCRIPTION>8-K MSHA CITATION
<TEXT>
<XBRL>
<?xml  version="1.0" encoding="utf-8"?>
<!-- DFIN ActiveDisclosure(SM) Inline XBRL Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-03-08T21:26:35.8949803+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : b356596dcfb149bfa46dfbaabdf74a7a -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<html xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:mlm="http://martinmarietta.com/20210304" xmlns:us-types="http://fasb.org/us-types/2020-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2020-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:srt-types="http://fasb.org/srt-types/2020-01-31" xmlns:srt="http://fasb.org/srt/2020-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2020-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:exch="http://xbrl.sec.gov/exch/2020-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:dei-std="http://xbrl.sec.gov/dei-std/2020-01-31" xmlns:dei-ent-std="http://xbrl.sec.gov/dei-ent-std/2020-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31" xmlns:currency="http://xbrl.sec.gov/currency/2020-01-31" xmlns:country="http://xbrl.sec.gov/country/2020-01-31" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html" />
<title>
mlm-8k_20210304.htm
</title>
</head>
<!-- NG Converter v5.0.2.50 -->
<body><div style="display:none">
	<ix:header>
		<ix:hidden>
			<ix:nonNumeric id="F_000001" name="dei:AmendmentFlag" contextRef="C_0000916076_20210304_20210304">false</ix:nonNumeric>
			<ix:nonNumeric id="F_000022" name="dei:EntityCentralIndexKey" contextRef="C_0000916076_20210304_20210304">0000916076</ix:nonNumeric>
		</ix:hidden>
		<ix:references>
			<link:schemaRef xlink:type="simple" xlink:href="mlm-20210304.xsd" xlink:arcrole="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase"></link:schemaRef>
		</ix:references>
		<ix:resources>
			<xbrli:context id="C_0000916076_20210304_20210304">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000916076</xbrli:identifier>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2021-03-04</xbrli:startDate>
					<xbrli:endDate>2021-03-04</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
			<xbrli:context id="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000916076</xbrli:identifier>
					<xbrli:segment>
						<xbrldi:explicitMember dimension="dei:EntityAddressesAddressTypeAxis">dei:FormerAddressMember</xbrldi:explicitMember>
					</xbrli:segment>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2021-03-04</xbrli:startDate>
					<xbrli:endDate>2021-03-04</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
		</ix:resources>
	</ix:header>
</div>

<p style="text-align:center;line-height:1pt;border-top:Solid 0.75pt;padding-top:1pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<p style="margin-top:12pt;text-align:center;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">UNITED STATES</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">SECURITIES AND EXCHANGE COMMISSION</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;text-transform:uppercase;font-style:normal;font-variant: normal;">Washington, DC 20549</p>
<p style="text-align:center;margin-top:6pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:5pt;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">FORM <ix:nonNumeric id="F_000000" name="dei:DocumentType" contextRef="C_0000916076_20210304_20210304">8-K</ix:nonNumeric></p>
<p style="text-align:center;margin-top:6pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:5pt;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;text-transform:uppercase;font-style:normal;font-variant: normal;">CURRENT REPORT </p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;text-transform:uppercase;font-style:normal;font-variant: normal;">Pursuant to Section 13 or 15(<span style="text-transform:none;">d</span>) of the</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:bold;text-transform:uppercase;font-style:normal;font-variant: normal;">Securities Exchange Act of 1934</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">Date of report (Date of earliest event reported) <ix:nonNumeric id="F_000002" name="dei:DocumentPeriodEndDate" contextRef="C_0000916076_20210304_20210304" format="ixt:datemonthdayyearen">March 4, 2021</ix:nonNumeric></p>
<p style="text-align:center;margin-top:6pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:6pt;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000003" name="dei:EntityRegistrantName" contextRef="C_0000916076_20210304_20210304">Martin Marietta Materials, Inc.</ix:nonNumeric></p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">(Exact Name of Registrant as Specified in Its Charter)</p>
<p style="text-align:center;margin-top:6pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:8pt;">&#160;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:34%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;text-transform:none;font-weight:bold;font-style:normal;font-variant: normal;"><ix:nonNumeric id="F_000004" name="dei:EntityIncorporationStateCountryCode" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:stateprovnameen">North Carolina</ix:nonNumeric></p></td>
<td valign="top" style="width:1%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:32%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000005" name="dei:EntityFileNumber" contextRef="C_0000916076_20210304_20210304">1-12744</ix:nonNumeric></p></td>
<td valign="top" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:32%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000006" name="dei:EntityTaxIdentificationNumber" contextRef="C_0000916076_20210304_20210304">56-1848578</ix:nonNumeric></p></td>
</tr>
<tr>
<td valign="bottom" style="width:34%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(State or Other Jurisdiction <br />of Incorporation)</p></td>
<td valign="top" style="width:1%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:32%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(Commission <br />File Number)</p></td>
<td valign="top" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:32%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(IRS Employer <br />Identification No.)</p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:50%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000007" name="dei:EntityAddressAddressLine1" contextRef="C_0000916076_20210304_20210304">4123 Parklake Avenue</ix:nonNumeric>, <ix:nonNumeric id="F_000008" name="dei:EntityAddressCityOrTown" contextRef="C_0000916076_20210304_20210304">Raleigh</ix:nonNumeric>, <ix:nonNumeric id="F_000009" name="dei:EntityAddressStateOrProvince" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:stateprovnameen">North Carolina</ix:nonNumeric></p></td>
<td valign="top" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:49%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000010" name="dei:EntityAddressPostalZipCode" contextRef="C_0000916076_20210304_20210304">27612</ix:nonNumeric></p></td>
</tr>
<tr>
<td valign="top" style="width:50%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(Address of Principal Executive Offices)</p></td>
<td valign="top" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:49%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(Zip Code)</p></td>
</tr>
</table></div>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">(<ix:nonNumeric id="F_000011" name="dei:CityAreaCode" contextRef="C_0000916076_20210304_20210304">919</ix:nonNumeric>) <ix:nonNumeric id="F_000012" name="dei:LocalPhoneNumber" contextRef="C_0000916076_20210304_20210304">781-4550</ix:nonNumeric></p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(Registrant&#8217;s Telephone Number, Including Area Code)</p>
<p style="margin-top:12pt;text-align:center;margin-bottom:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;text-transform:none;font-weight:bold;font-style:normal;font-variant: normal;"><ix:nonNumeric id="F_000013" name="dei:EntityAddressAddressLine1" contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304">2710 Wycliff Road</ix:nonNumeric>, <ix:nonNumeric id="F_000014" name="dei:EntityAddressCityOrTown" contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304">Raleigh</ix:nonNumeric>, <ix:nonNumeric id="F_000015" name="dei:EntityAddressStateOrProvince" contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304" format="ixt-sec:stateprovnameen">North Carolina</ix:nonNumeric> <ix:nonNumeric id="F_000016" name="dei:EntityAddressPostalZipCode" contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304">27607</ix:nonNumeric></p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;letter-spacing:-0.15pt;font-style:normal;text-transform:none;font-variant: normal;">(Former Name or Former Address, if Changed Since Last Report)</p>
<p style="text-align:center;margin-top:6pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:9pt;">&#160;</p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</p>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;  margin-left:4.54%;width:90%;">
<tr>
<td style="width:2.96%;"></td>
<td style="width:87.04%;"></td>
</tr>
<tr>
<td valign="top">
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Segoe UI Symbol;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000017" name="dei:WrittenCommunications" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top">
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p></td>
</tr>
<tr>
<td valign="top">
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Segoe UI Symbol;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000018" name="dei:SolicitingMaterial" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top">
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p></td>
</tr>
<tr>
<td valign="top">
<p style="margin-top:6pt;text-align:justify;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Segoe UI Symbol;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000019" name="dei:PreCommencementTenderOffer" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top">
<p style="margin-top:6pt;text-align:justify;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</p></td>
</tr>
<tr>
<td valign="top">
<p style="margin-top:6pt;text-align:justify;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Segoe UI Symbol;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000020" name="dei:PreCommencementIssuerTenderOffer" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top">
<p style="margin-top:6pt;text-align:justify;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p></td>
</tr>
</table></div>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;&#8201;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;&#8201;240.12b-2 of this chapter). Emerging growth company<span style="font-family:Times New Roman;">&#160;</span><span style="font-family:Segoe UI Symbol;"><ix:nonNumeric id="F_000021" name="dei:EntityEmergingGrowthCompany" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></span></p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10.5pt;font-family:Calibri;letter-spacing:-0.15pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.<span style="font-family:Times New Roman;">&#160;</span><span style="font-family:Segoe UI Symbol;">&#9744;</span></p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10.5pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Securities registered pursuant to Section 12(b) of the Act:</p>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:99.91%;">
<tr>
<td style="width:36.05%;"></td>
<td style="width:21.32%;"></td>
<td style="width:42.54%;"></td>
</tr>
<tr>
<td valign="top" style=" border-top:solid 0.75pt #000000; border-bottom:solid 0.75pt #000000; border-left:solid 0.75pt #000000; border-right:solid 0.75pt #000000;">
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Title of each class</p></td>
<td valign="top" style=" border-top:solid 0.75pt #000000; border-bottom:solid 0.75pt #000000; border-left:solid 0.75pt #000000; border-right:solid 0.75pt #000000;">
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Trading Symbol(s)</p></td>
<td valign="top" style=" border-top:solid 0.75pt #000000; border-bottom:solid 0.75pt #000000; border-left:solid 0.75pt #000000; border-right:solid 0.75pt #000000;">
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10.5pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Name of each exchange on which registered</p></td>
</tr>
<tr>
<td valign="top" style=" border-top:solid 0.75pt #000000; border-bottom:solid 0.75pt #000000; border-left:solid 0.75pt #000000; border-right:solid 0.75pt #000000;">
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10.5pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000023" name="dei:Security12bTitle" contextRef="C_0000916076_20210304_20210304">Common Stock, $.01 par value per share</ix:nonNumeric></p></td>
<td valign="top" style=" border-top:solid 0.75pt #000000; border-bottom:solid 0.75pt #000000; border-left:solid 0.75pt #000000; border-right:solid 0.75pt #000000;">
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10.5pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000024" name="dei:TradingSymbol" contextRef="C_0000916076_20210304_20210304">MLM</ix:nonNumeric></p></td>
<td valign="top" style=" border-top:solid 0.75pt #000000; border-bottom:solid 0.75pt #000000; border-left:solid 0.75pt #000000; border-right:solid 0.75pt #000000;">
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10.5pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000025" name="dei:SecurityExchangeName" contextRef="C_0000916076_20210304_20210304" format="ixt-sec:exchnameen">New York Stock Exchange</ix:nonNumeric></p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-weight:bold;;font-size:11pt;">&#160;</p>
<p style="text-align:center;margin-top:8pt;line-height:1pt;border-top:Solid 0.75pt;padding-top:1pt;border-bottom:Solid 0.75pt;padding-bottom:1pt;margin-bottom:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<hr style="page-break-after:always" />
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:11pt;">&#160;</p>
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">Item 1.04  Mine Safety&#8212;Reporting of Shutdowns and Patterns of Violations. </p>
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Calibri;font-size:12pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">On March 4, 2021, the Company received a section 107(a)&#160;order issued by the Mine Safety and Health Administration (&#8220;MSHA&#8221;) under the Federal Mine Safety and Health Act of 1977 at its Weeping Water mine in Weeping Water, Nebraska.&#160;&#160;The order stated that a safe means of access was not provided nor maintained when a miner crossed through the engine compartment behind the cab of a front-end loader.&#160; The order was terminated shortly thereafter when the operator safely dismounted the machine.&#160;&#160;No one was injured in the cited incident. </p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:9.06%;white-space:nowrap">
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;font-size:11pt;font-family:Calibri;font-weight:bold;font-style:normal;text-transform:none;font-variant: normal;"><span style="font-size:11pt;font-family:Calibri;font-weight:bold;font-style:normal;text-transform:none;font-variant: normal;">Item 9.01</span></p></td>
<td valign="top">
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;font-weight:bold;font-style:normal;text-transform:none;font-variant: normal;font-family:Calibri;font-size:11pt;">Financial Statements and Exhibits.</p></td></tr></table></div>
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(d) Exhibits</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:8.08%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top" style="width:1.02%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:90.9%;">
<p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">104<span style="margin-left:36pt;">&#160;&#160;&#160;&#160; </span>Cover Page Interactive Data File (embedded within the Inline XBRL document)</p>
<hr style="page-break-after:always" />
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:11pt;">&#160;</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:11pt;font-family:Calibri;font-style:normal;text-transform:none;font-variant: normal;">SIGNATURES</p>
<p style="text-align:justify;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:50%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:0.82%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:0.84%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:48.34%; border-bottom:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">MARTIN MARIETTA MATERIALS, INC.</p></td>
</tr>
<tr>
<td valign="top" style="width:50%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:0.82%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:0.84%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="top" style="width:4.48%; border-top:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:1.12%; border-top:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:42.74%; border-top:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(Registrant)</p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="bottom" style="width:50%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Date: March 8, 2021</p></td>
<td valign="top" style="width:0.82%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:0.84%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:4.48%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">By:</p></td>
<td valign="bottom" style="width:1.12%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:42.74%; border-bottom:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ James A. J. Nickolas</p></td>
</tr>
<tr>
<td valign="top" style="width:50%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top" style="width:0.82%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:0.84%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top" style="width:4.48%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:1.12%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:42.74%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">James A. J. Nickolas</p></td>
</tr>
<tr>
<td valign="top" style="width:50%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:0.82%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:0.84%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;font-family:Calibri;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top" style="width:4.48%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:1.12%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:11pt;">&#160;</p></td>
<td valign="bottom" style="width:42.74%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Calibri;font-size:12pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Sr. Vice President and <span style="color:#000000;">Chief Financial Officer</span></p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:11pt;">&#160;</p></body>
</html>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>2
<FILENAME>mlm-20210304.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-03-08T21:26:35.8949803+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : b356596dcfb149bfa46dfbaabdf74a7a -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:us-types="http://fasb.org/us-types/2020-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:srt-types="http://fasb.org/srt-types/2020-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2020-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt="http://fasb.org/srt/2020-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2020-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2020-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2020-01-31" xmlns:exch="http://xbrl.sec.gov/exch/2020-01-31" xmlns:mlm="http://martinmarietta.com/20210304" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://martinmarietta.com/20210304" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd" namespace="http://xbrl.sec.gov/country/2020-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/currency/2020/currency-2020-01-31.xsd" namespace="http://xbrl.sec.gov/currency/2020-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd" namespace="http://xbrl.sec.gov/dei/2020-01-31" />
  <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
  <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/exch/2020/exch-2020-01-31.xsd" namespace="http://xbrl.sec.gov/exch/2020-01-31" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/negated" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/net" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" namespace="http://xbrl.sec.gov/naics/2017-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/sic/2020/sic-2020-01-31.xsd" namespace="http://xbrl.sec.gov/sic/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd" namespace="http://fasb.org/srt/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-roles-2020-01-31.xsd" namespace="http://fasb.org/srt-roles/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-types-2020-01-31.xsd" namespace="http://fasb.org/srt-types/2020-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" namespace="http://xbrl.sec.gov/stpr/2018-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd" namespace="http://fasb.org/us-gaap/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd" namespace="http://fasb.org/us-roles/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-types-2020-01-31.xsd" namespace="http://fasb.org/us-types/2020-01-31" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType id="TemplateLink" roleURI="http://martinmarietta.com/20210304/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mlm-20210304_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mlm-20210304_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mlm-20210304_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="mlm_DocumentAndEntityInformationLineItems" name="DocumentAndEntityInformationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="mlm_DocumentAndEntityInformationTable" name="DocumentAndEntityInformationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
</xsd:schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>3
<FILENAME>mlm-20210304_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-03-08T21:26:35.8949803+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : b356596dcfb149bfa46dfbaabdf74a7a -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
  <link:roleRef xlink:type="simple" xlink:href="mlm-20210304.xsd#TemplateLink" roleURI="http://martinmarietta.com/20210304/role/TemplateLink" />
  <link:roleRef roleURI="http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="mlm-20210304.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:definitionLink xlink:type="extended" xlink:role="http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_FormerAddressMember" xlink:type="locator" xlink:label="dei_FormerAddressMember" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AddressTypeDomain" xlink:type="locator" xlink:label="dei_AddressTypeDomain" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AddressTypeDomain" xlink:type="locator" xlink:label="dei_AddressTypeDomain_2" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressesAddressTypeAxis" xlink:type="locator" xlink:label="dei_EntityAddressesAddressTypeAxis" />
    <link:loc xlink:href="mlm-20210304.xsd#mlm_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="mlm_DocumentAndEntityInformationTable" />
    <link:loc xlink:href="mlm-20210304.xsd#mlm_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="mlm_DocumentAndEntityInformationLineItems" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="mlm_DocumentAndEntityInformationTable" order="10010.00" priority="2" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="mlm_DocumentAndEntityInformationTable" xlink:to="dei_EntityAddressesAddressTypeAxis" order="10040.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_EntityAddressesAddressTypeAxis" xlink:to="dei_AddressTypeDomain_2" order="10050.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_EntityAddressesAddressTypeAxis" xlink:to="dei_AddressTypeDomain" order="10070.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_AddressTypeDomain" xlink:to="dei_FormerAddressMember" order="10090.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentType" order="10180.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_AmendmentFlag" order="10200.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentPeriodEndDate" order="10220.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityRegistrantName" order="10240.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityIncorporationStateCountryCode" order="10260.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityFileNumber" order="10280.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityTaxIdentificationNumber" order="10300.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressAddressLine1" order="10320.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressCityOrTown" order="10340.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressStateOrProvince" order="10360.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressPostalZipCode" order="10380.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_CityAreaCode" order="10400.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_LocalPhoneNumber" order="10420.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_WrittenCommunications" order="10520.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_SolicitingMaterial" order="10540.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementTenderOffer" order="10560.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementIssuerTenderOffer" order="10580.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityEmergingGrowthCompany" order="10600.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityCentralIndexKey" order="10620.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_Security12bTitle" order="10670.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_TradingSymbol" order="10710.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_SecurityExchangeName" order="10750.00" priority="2" use="optional" />
  </link:definitionLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>mlm-20210304_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-03-08T21:26:35.8949803+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : b356596dcfb149bfa46dfbaabdf74a7a -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/label/axisDefault" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd#axisDefault" xlink:type="simple" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <link:loc xlink:href="mlm-20210304.xsd#mlm_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="mlm_DocumentAndEntityInformationLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_DocumentAndEntityInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Document and entity information.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="mlm_DocumentAndEntityInformationLineItems_lbl" />
    <link:loc xlink:href="mlm-20210304.xsd#mlm_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="mlm_DocumentAndEntityInformationTable" />
    <link:label xml:lang="en-US" xlink:label="mlm_DocumentAndEntityInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Document and entity information table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DocumentAndEntityInformationTable" xlink:to="mlm_DocumentAndEntityInformationTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_DocumentAndEntityInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document And Entity Information [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DocumentAndEntityInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document And Entity Information [Table]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressesAddressTypeAxis" xlink:type="locator" xlink:label="dei_EntityAddressesAddressTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressesAddressTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Addresses, Address Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressesAddressTypeAxis" xlink:to="dei_EntityAddressesAddressTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressesAddressTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Addresses Address Type [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AddressTypeDomain" xlink:type="locator" xlink:label="dei_AddressTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="dei_AddressTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Address Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AddressTypeDomain" xlink:to="dei_AddressTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_AddressTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Address Type [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_FormerAddressMember" xlink:type="locator" xlink:label="dei_FormerAddressMember" />
    <link:label xml:lang="en-US" xlink:label="dei_FormerAddressMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Former Address</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_FormerAddressMember" xlink:to="dei_FormerAddressMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_FormerAddressMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Former Address [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DocumentAndEntityInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document And Entity Information [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DocumentAndEntityInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document And Entity Information [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation State Country Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Address Line1</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address City Or Town</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address State Or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Written Communications</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Written Communications</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Soliciting Material</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Soliciting Material</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Tender Offer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Issuer Tender Offer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Issuer Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security 12b Title</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security12b Title</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
  </link:labelLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>mlm-20210304_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-03-08T21:26:35.8949803+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : b356596dcfb149bfa46dfbaabdf74a7a -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://martinmarietta.com/20210304/role/TemplateLink" xlink:href="mlm-20210304.xsd#TemplateLink" xlink:type="simple" />
  <link:roleRef roleURI="http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="mlm-20210304.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:presentationLink xlink:type="extended" xlink:role="http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:loc xlink:href="mlm-20210304.xsd#mlm_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="mlm_DocumentAndEntityInformationLineItems" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_FormerAddressMember" xlink:type="locator" xlink:label="dei_FormerAddressMember" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AddressTypeDomain" xlink:type="locator" xlink:label="dei_AddressTypeDomain" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressesAddressTypeAxis" xlink:type="locator" xlink:label="dei_EntityAddressesAddressTypeAxis" />
    <link:loc xlink:href="mlm-20210304.xsd#mlm_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="mlm_DocumentAndEntityInformationTable" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="mlm_DocumentAndEntityInformationTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationTable" xlink:to="dei_EntityAddressesAddressTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityAddressesAddressTypeAxis" xlink:to="dei_AddressTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_AddressTypeDomain" xlink:to="dei_FormerAddressMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationTable" xlink:to="mlm_DocumentAndEntityInformationLineItems" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentType" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_AmendmentFlag" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentPeriodEndDate" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityRegistrantName" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityIncorporationStateCountryCode" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityFileNumber" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityTaxIdentificationNumber" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressAddressLine1" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressCityOrTown" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressStateOrProvince" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressPostalZipCode" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_CityAreaCode" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_LocalPhoneNumber" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_WrittenCommunications" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_SolicitingMaterial" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementTenderOffer" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementIssuerTenderOffer" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityEmergingGrowthCompany" order="10590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityCentralIndexKey" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_Security12bTitle" order="10660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_TradingSymbol" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="mlm_DocumentAndEntityInformationLineItems" xlink:to="dei_SecurityExchangeName" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </link:presentationLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>6
<FILENAME>mlm-8k_20210304_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="mlm-20210304.xsd" xlink:type="simple"/>
    <context id="C_0000916076_20210304_20210304">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000916076</identifier>
        </entity>
        <period>
            <startDate>2021-03-04</startDate>
            <endDate>2021-03-04</endDate>
        </period>
    </context>
    <context id="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000916076</identifier>
            <segment>
                <xbrldi:explicitMember dimension="dei:EntityAddressesAddressTypeAxis">dei:FormerAddressMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-03-04</startDate>
            <endDate>2021-03-04</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="C_0000916076_20210304_20210304" id="F_000001">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="C_0000916076_20210304_20210304" id="F_000022">0000916076</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="C_0000916076_20210304_20210304" id="F_000000">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="C_0000916076_20210304_20210304" id="F_000002">2021-03-04</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="C_0000916076_20210304_20210304" id="F_000003">Martin Marietta Materials, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="C_0000916076_20210304_20210304" id="F_000004">NC</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="C_0000916076_20210304_20210304" id="F_000005">1-12744</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="C_0000916076_20210304_20210304" id="F_000006">56-1848578</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="C_0000916076_20210304_20210304" id="F_000007">4123 Parklake Avenue</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="C_0000916076_20210304_20210304" id="F_000008">Raleigh</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="C_0000916076_20210304_20210304" id="F_000009">NC</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="C_0000916076_20210304_20210304" id="F_000010">27612</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="C_0000916076_20210304_20210304" id="F_000011">919</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="C_0000916076_20210304_20210304" id="F_000012">781-4550</dei:LocalPhoneNumber>
    <dei:EntityAddressAddressLine1
      contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304"
      id="F_000013">2710 Wycliff Road</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304"
      id="F_000014">Raleigh</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304"
      id="F_000015">NC</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="C_0000916076_deiEntityAddressesAddressTypeAxis_deiFormerAddressMember_20210304_20210304"
      id="F_000016">27607</dei:EntityAddressPostalZipCode>
    <dei:WrittenCommunications contextRef="C_0000916076_20210304_20210304" id="F_000017">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="C_0000916076_20210304_20210304" id="F_000018">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="C_0000916076_20210304_20210304" id="F_000019">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="C_0000916076_20210304_20210304" id="F_000020">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany contextRef="C_0000916076_20210304_20210304" id="F_000021">false</dei:EntityEmergingGrowthCompany>
    <dei:Security12bTitle contextRef="C_0000916076_20210304_20210304" id="F_000023">Common Stock, $.01 par value per share</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="C_0000916076_20210304_20210304" id="F_000024">MLM</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C_0000916076_20210304_20210304" id="F_000025">NYSE</dei:SecurityExchangeName>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>7
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.20.4</span><table class="report" border="0" cellspacing="2" id="idm140579986164504">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>Mar. 04, 2021</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_mlm_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Mar.  04,  2021<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">Martin Marietta Materials, Inc.<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">NC<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">1-12744<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">56-1848578<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">4123 Parklake Avenue<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Raleigh<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">NC<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">27612<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">919<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">781-4550<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre Commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre Commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000916076<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_Security12bTitle', window );">Security 12b Title</a></td>
<td class="text">Common Stock, $.01 par value per share<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">MLM<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NYSE<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressesAddressTypeAxis=dei_FormerAddressMember', window );">Former Address</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_mlm_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">2710 Wycliff Road<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Raleigh<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">NC<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">27607<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementIssuerTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:securityTitleItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SecurityExchangeName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarExchangeCodeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Section 14a<br> -Number 240<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SolicitingMaterial</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:tradingSymbolItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_WrittenCommunications">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_WrittenCommunications</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_mlm_DocumentAndEntityInformationLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Document and entity information.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">mlm_DocumentAndEntityInformationLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mlm_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressesAddressTypeAxis=dei_FormerAddressMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressesAddressTypeAxis=dei_FormerAddressMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>8
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 Financial_Report.xlsx
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MW&,EC'%BM/XU@LD/['X 4$L#!!0    (  >*:%(<.&7J/P$  #P"   /
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MDWM)J'7N0;#W\!J-'<V/'[?\ 5!+ P04    "  'BFA2)!Z;HJT   #X 0
M&@   'AL+U]R96QS+W=O<FMB;V]K+GAM;"YR96QSM9$]#H,P#(6O$N4 -5"I
M0P5,75@K+A %\R,2$L6N"K<OA0&0.G1ALIXM?^_)3I]H%'=NH+;S)$9K!LID
MR^SO *1;M(HNSN,P3VH7K.)9A@:\TKUJ$)(HND'8,V2>[IFBG#S^0W1UW6E\
M./VR./ /,+Q=Z*E%9"E*%1KD3,)HMC;!4N++3):BJ#(9BBJ6<%H@XLD@;6E6
M?;!/3K3G>1<W]T6NS>,)KM\,<'AT_@%02P,$%     @ !XIH4F60>9(9 0
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M<',O87!P+GAM;%!+ 0(4 Q0    (  >*:%*>Y@]H[@   "L"   1
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M96QS+RYR96QS4$L! A0#%     @ !XIH4APX9>H_ 0  / (   \
M     ( !M \  'AL+W=O<FMB;V]K+GAM;%!+ 0(4 Q0    (  >*:%(D'INB
MK0   /@!   :              "  2 1  !X;"]?<F5L<R]W;W)K8F]O:RYX
M;6PN<F5L<U!+ 0(4 Q0    (  >*:%)ED'F2&0$  ,\#   3
M  "  042  !;0V]N=&5N=%]4>7!E<UTN>&UL4$L%!@     )  D /@(  $\3
$      $!

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>9
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
// Edgar(tm) Renderer was created by staff of the U.S. Securities and Exchange Commission.  Data and content created by government employees within the scope of their employment are not subject to domestic copyright protection. 17 U.S.C. 105.
var Show={};Show.LastAR=null,Show.showAR=function(a,r,w){if(Show.LastAR)Show.hideAR();var e=a;while(e&&e.nodeName!='TABLE')e=e.nextSibling;if(!e||e.nodeName!='TABLE'){var ref=((window)?w.document:document).getElementById(r);if(ref){e=ref.cloneNode(!0);
e.removeAttribute('id');a.parentNode.appendChild(e)}}
if(e)e.style.display='block';Show.LastAR=e};Show.hideAR=function(){Show.LastAR.style.display='none'};Show.toggleNext=function(a){var e=a;while(e.nodeName!='DIV')e=e.nextSibling;if(!e.style){}else if(!e.style.display){}else{var d,p_;if(e.style.display=='none'){d='block';p='-'}else{d='none';p='+'}
e.style.display=d;if(a.textContent){a.textContent=p+a.textContent.substring(1)}else{a.innerText=p+a.innerText.substring(1)}}}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>10
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
/* Updated 2009-11-04 */
/* v2.2.0.24 */

/* DefRef Styles */
..report table.authRefData{
	background-color: #def;
	border: 2px solid #2F4497;
	font-size: 1em;
	position: absolute;
}

..report table.authRefData a {
	display: block;
	font-weight: bold;
}

..report table.authRefData p {
	margin-top: 0px;
}

..report table.authRefData .hide {
	background-color: #2F4497;
	padding: 1px 3px 0px 0px;
	text-align: right;
}

..report table.authRefData .hide a:hover {
	background-color: #2F4497;
}

..report table.authRefData .body {
	height: 150px;
	overflow: auto;
	width: 400px;
}

..report table.authRefData table{
	font-size: 1em;
}

/* Report Styles */
..pl a, .pl a:visited {
	color: black;
	text-decoration: none;
}

/* table */
..report {
	background-color: white;
	border: 2px solid #acf;
	clear: both;
	color: black;
	font: normal 8pt Helvetica, Arial, san-serif;
	margin-bottom: 2em;
}

..report hr {
	border: 1px solid #acf;
}

/* Top labels */
..report th {
	background-color: #acf;
	color: black;
	font-weight: bold;
	text-align: center;
}

..report th.void	{
	background-color: transparent;
	color: #000000;
	font: bold 10pt Helvetica, Arial, san-serif;
	text-align: left;
}

..report .pl {
	text-align: left;
	vertical-align: top;
	white-space: normal;
	width: 200px;
	white-space: normal; /* word-wrap: break-word; */
}

..report td.pl a.a {
	cursor: pointer;
	display: block;
	width: 200px;
	overflow: hidden;
}

..report td.pl div.a {
	width: 200px;
}

..report td.pl a:hover {
	background-color: #ffc;
}

/* Header rows... */
..report tr.rh {
	background-color: #acf;
	color: black;
	font-weight: bold;
}

/* Calendars... */
..report .rc {
	background-color: #f0f0f0;
}

/* Even rows... */
..report .re, .report .reu {
	background-color: #def;
}

..report .reu td {
	border-bottom: 1px solid black;
}

/* Odd rows... */
..report .ro, .report .rou {
	background-color: white;
}

..report .rou td {
	border-bottom: 1px solid black;
}

..report .rou table td, .report .reu table td {
	border-bottom: 0px solid black;
}

/* styles for footnote marker */
..report .fn {
	white-space: nowrap;
}

/* styles for numeric types */
..report .num, .report .nump {
	text-align: right;
	white-space: nowrap;
}

..report .nump {
	padding-left: 2em;
}

..report .nump {
	padding: 0px 0.4em 0px 2em;
}

/* styles for text types */
..report .text {
	text-align: left;
	white-space: normal;
}

..report .text .big {
	margin-bottom: 1em;
	width: 17em;
}

..report .text .more {
	display: none;
}

..report .text .note {
	font-style: italic;
	font-weight: bold;
}

..report .text .small {
	width: 10em;
}

..report sup {
	font-style: italic;
}

..report .outerFootnotes {
	font-size: 1em;
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>11
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.20.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>2</ContextCount>
  <ElementCount>96</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>1</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>0</UnitCount>
  <MyReports>
    <Report instance="mlm-8k_20210304.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="8-K" original="mlm-8k_20210304.htm">mlm-8k_20210304.htm</File>
    <File>mlm-20210304.xsd</File>
    <File>mlm-20210304_def.xml</File>
    <File>mlm-20210304_lab.xml</File>
    <File>mlm-20210304_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>13
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
{
 "instance": {
  "mlm-8k_20210304.htm": {
   "axisCustom": 0,
   "axisStandard": 1,
   "contextCount": 2,
   "dts": {
    "definitionLink": {
     "local": [
      "mlm-20210304_def.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-eedm-def-2020-01-31.xml",
      "http://xbrl.fasb.org/srt/2020/elts/srt-eedm1-def-2020-01-31.xml"
     ]
    },
    "inline": {
     "local": [
      "mlm-8k_20210304.htm"
     ]
    },
    "labelLink": {
     "local": [
      "mlm-20210304_lab.xml"
     ],
     "remote": [
      "https://xbrl.sec.gov/dei/2020/dei-doc-2020-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "mlm-20210304_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "https://xbrl.sec.gov/dei/2020/dei-ref-2020-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "mlm-20210304.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "https://xbrl.sec.gov/currency/2020/currency-2020-01-31.xsd",
      "https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "https://xbrl.sec.gov/exch/2020/exch-2020-01-31.xsd",
      "http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd",
      "https://xbrl.sec.gov/sic/2020/sic-2020-01-31.xsd",
      "http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://xbrl.fasb.org/srt/2020/elts/srt-types-2020-01-31.xsd",
      "http://xbrl.fasb.org/srt/2020/elts/srt-roles-2020-01-31.xsd",
      "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-types-2020-01-31.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd"
     ]
    }
   },
   "elementCount": 28,
   "entityCount": 1,
   "hidden": {
    "http://xbrl.sec.gov/dei/2020-01-31": 2,
    "total": 2
   },
   "keyCustom": 0,
   "keyStandard": 96,
   "memberCustom": 0,
   "memberStandard": 1,
   "nsprefix": "mlm",
   "nsuri": "http://martinmarietta.com/20210304",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "body",
       "html"
      ],
      "baseRef": "mlm-8k_20210304.htm",
      "contextRef": "C_0000916076_20210304_20210304",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "100000 - Document - Document and Entity Information",
     "role": "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "body",
       "html"
      ],
      "baseRef": "mlm-8k_20210304.htm",
      "contextRef": "C_0000916076_20210304_20210304",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 1,
   "tag": {
    "dei_AddressTypeDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "An entity may have several addresses for different purposes and this domain represents all such types.",
        "label": "Address Type [Domain]",
        "terseLabel": "Address Type"
       }
      }
     },
     "localname": "AddressTypeDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code",
        "terseLabel": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CoverAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cover page.",
        "label": "Cover [Abstract]"
       }
      }
     },
     "localname": "CoverAbstract",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "dei_DocumentPeriodEndDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.",
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
        "label": "Document Type",
        "terseLabel": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address Address Line1",
        "terseLabel": "Entity Address, Address Line One"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address City Or Town",
        "terseLabel": "Entity Address, City or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address Postal Zip Code",
        "terseLabel": "Entity Address, Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address State Or Province",
        "terseLabel": "Entity Address, State or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityAddressesAddressTypeAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.",
        "label": "Entity Addresses Address Type [Axis]",
        "terseLabel": "Entity Addresses, Address Type"
       }
      }
     },
     "localname": "EntityAddressesAddressTypeAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r7"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r7"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
        "label": "Entity File Number",
        "terseLabel": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation State Country Code",
        "terseLabel": "Entity Incorporation State Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r7"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r7"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_FormerAddressMember": {
     "auth_ref": [
      "r5",
      "r6"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Former address for entity",
        "label": "Former Address [Member]",
        "terseLabel": "Former Address"
       }
      }
     },
     "localname": "FormerAddressMember",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_PreCommencementIssuerTenderOffer": {
     "auth_ref": [
      "r2"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.",
        "label": "Pre Commencement Issuer Tender Offer",
        "terseLabel": "Pre Commencement Issuer Tender Offer"
       }
      }
     },
     "localname": "PreCommencementIssuerTenderOffer",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_PreCommencementTenderOffer": {
     "auth_ref": [
      "r3"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.",
        "label": "Pre Commencement Tender Offer",
        "terseLabel": "Pre Commencement Tender Offer"
       }
      }
     },
     "localname": "PreCommencementTenderOffer",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_Security12bTitle": {
     "auth_ref": [
      "r0"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Title of a 12(b) registered security.",
        "label": "Security12b Title",
        "terseLabel": "Security 12b Title"
       }
      }
     },
     "localname": "Security12bTitle",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "securityTitleItemType"
    },
    "dei_SecurityExchangeName": {
     "auth_ref": [
      "r1"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the Exchange on which a security is registered.",
        "label": "Security Exchange Name",
        "terseLabel": "Security Exchange Name"
       }
      }
     },
     "localname": "SecurityExchangeName",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarExchangeCodeItemType"
    },
    "dei_SolicitingMaterial": {
     "auth_ref": [
      "r4"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.",
        "label": "Soliciting Material",
        "terseLabel": "Soliciting Material"
       }
      }
     },
     "localname": "SolicitingMaterial",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_TradingSymbol": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Trading symbol of an instrument as listed on an exchange.",
        "label": "Trading Symbol",
        "terseLabel": "Trading Symbol"
       }
      }
     },
     "localname": "TradingSymbol",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "tradingSymbolItemType"
    },
    "dei_WrittenCommunications": {
     "auth_ref": [
      "r8"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.",
        "label": "Written Communications",
        "terseLabel": "Written Communications"
       }
      }
     },
     "localname": "WrittenCommunications",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "mlm_DocumentAndEntityInformationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Document and entity information.",
        "label": "Document And Entity Information [Line Items]",
        "terseLabel": "Document And Entity Information [Line Items]"
       }
      }
     },
     "localname": "DocumentAndEntityInformationLineItems",
     "nsuri": "http://martinmarietta.com/20210304",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "mlm_DocumentAndEntityInformationTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Document and entity information table.",
        "label": "Document And Entity Information [Table]",
        "terseLabel": "Document And Entity Information [Table]"
       }
      }
     },
     "localname": "DocumentAndEntityInformationTable",
     "nsuri": "http://martinmarietta.com/20210304",
     "presentation": [
      "http://martinmarietta.com/20210304/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    }
   },
   "unitCount": 0
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b"
  },
  "r1": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r2": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13e",
   "Subsection": "4c"
  },
  "r3": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "14d",
   "Subsection": "2b"
  },
  "r4": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "14a",
   "Subsection": "12"
  },
  "r5": {
   "Name": "Form 10-Q",
   "Number": "249",
   "Publisher": "SEC",
   "Section": "308",
   "Subsection": "a"
  },
  "r6": {
   "Name": "Form 8-K",
   "Number": "249",
   "Publisher": "SEC",
   "Section": "308"
  },
  "r7": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r8": {
   "Name": "Securities Act",
   "Number": "230",
   "Publisher": "SEC",
   "Section": "425"
  }
 },
 "version": "2.1"
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>14
<FILENAME>0001564590-21-011525-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 0001564590-21-011525-xbrl.zip
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M:LUNIRP]ND?$JZI9F0KM@^%<$OH_T/RGXO"&/[#GRH^%"[L;4/L5KGW;2R[
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MRSH^UQH+/^<2"S]U!W_F#K6*1Y7[%O8*"_!G^DO*#N=A<\'#4BW[WGAMIES
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MFI]B'3O%\DFY=N+8W8Y5JG6ZM'3B=#N4=IQNI40K- ZI/YP(WNLKDK6/-(B
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M&S[]'I)5?T^@6Z<CY4<,L7W7I4/)ZM&'4_+$'=6O6R;@JW/)2L?ERB&/FL'
M;'\XG3+H7"R%?;]%$^(LQN])XN.#S1V:&647=6J-37RYW2DMVATP$+Z /4UG
M[=L*+$<C.&=I^,[+]RD\,,#LC&)#X3_BFKA1W<#6V2<-*D"1/)IFEL[RRGF6
M;];NV!:G_ZI,20K<P=KS(E=X&]C?R*E:+HGE14G\S%T&/3M,;+;[63FK4"F5
MMB=.'\*SY\)SLB@\]W3<#)/BMC9E+Y&D\DG.JI:JY4IUE3#EPZUE?H-)Y]D.
M]Y@]X%E6[R 81]]"5"S(+Q!-2H<' ?991Y#\!;AKB3WGZ#NS^RE^QOO2VVS#
M'PRXE#.6HV4G@4)^ [>W[XI]</(93C9;;7(U&+K^!'0YX&72RI(;WSA*,8YY
M[>Q?1.=B'['+MF.7LOFN)'&Y+U!9] 7"0^KPSQ?N,6LS/Z!D%8KDCHH'ESXP
M<OG(O-%"A<WQB@1@=2E,#?AX*^[])V\SB%K4129L D1M*1!ZC[X5=Q"9<5U;
M=A!!WL[-?ZH_5ZI]Z)VN7C.7BM>=#S+A_A\?;IQ!N"A43JS"2WSO=V\@LR'Q
M,1MZ)T"M^9"ZY&K,[!&^#$!NN[!E,WG8[M<[4[XLZ!!!)=K(PSK$DY+L<CN3
M*)/%[?-2,+JY9:E9M7F[LN((STH<X7WQ;>K>]0'^ER05*E4K5RJ7S?T\A7D5
MN9T=Q_SMAVK!JIQ*<L]<-D02AG&@/IER1^@O$^3H3,Y?H^AL+[+O5LJIWV:N
MZC8K5 L5RR1?)[;+NUW2\JFS@6]II9PC;.+@;A./S3UC*R7WO+%GO$44OM6E
M7H%I2J)T0R=MNR('4[XC,QB0)3RD%B3\&I+IF/ N'DQ[/>:0-DH;^4*E(BU=
M8')(1]6UYX^J-W0] EZ91OD%W-IB(JC19_8#5G<1.@1U'$*[PB30F'28ZS\A
M [$1^4JJN5])E[NXG7%).+Z@Y !CE4\D'XQ<13WFCZ0[(9(J+KL3/3(<X'>
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MFC9]-7#APW\!4$L! A0#%     @ !XIH4B]&^2DU!0  B!D  !
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M2P$"% ,4    "  'BFA2KA*S'G\1  ".BP  $P              @ '$&0
I;6QM+3AK7S(P,C$P,S T+FAT;5!+!08     !0 % $4!  !T*P     !

end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
