v3.25.2
Document and Entity Information
Jul. 07, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 07, 2025
Entity File Number 001-12744
Entity Registrant Name Martin Marietta Materials Inc.
Entity Central Index Key 0000916076
Entity Incorporation, State or Country Code NC
Entity Tax Identification Number 56-1848578
Entity Address, Address Line One 4123 PARKLAKE AVE
Entity Address, City or Town RALEIGH
Entity Address, State or Province NC
Entity Address, Postal Zip Code 27612
City Area Code 919
Local Phone Number 781-4550
Title of 12(b) Security Common Stock, $.01 par value per share
Trading Symbol MLM
Security Exchange Name NYSE
Entity Emerging Growth Company false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false