Document and Entity Information
Document and Entity Information | Jun. 25, 2020 |
Cover [Abstract] | |
Entity Registrant Name | MARTIN MARIETTA MATERIALS INC |
Amendment Flag | false |
Entity Central Index Key | 0000916076 |
Document Type | 8-K |
Document Period End Date | Jun. 25, 2020 |
Entity Incorporation State Country Code | NC |
Entity File Number | 1-12744 |
Entity Tax Identification Number | 56-1848578 |
Entity Address, Address Line One | 2710 Wycliff Road |
Entity Address, City or Town | Raleigh |
Entity Address, State or Province | NC |
Entity Address, Postal Zip Code | 27607 |
City Area Code | (919) |
Local Phone Number | 781-4550 |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Security 12b Title | Common Stock, $.01 par value per share |
Trading Symbol | MLM |
Security Exchange Name | NYSE |
Entity Emerging Growth Company | false |