Schedule of Assets (Held at End of Year) (Details) - EBP 006 $ in Thousands |
12 Months Ended |
|
Dec. 31, 2025
USD ($)
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| Entity Tax Identification Number |
56-1848578
|
| EBP, Plan Number |
006
|
| EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution |
$ 26,990
|
| Employee Benefit Plan, Asset Held for Investment |
$ 1,068,336
|
| Minimum |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| Employee benefit plan, asset held for investment, participant loan, interest rate |
4.00%
|
| Maximum |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| Employee benefit plan, asset held for investment, participant loan, interest rate |
10.00%
|
| Employee benefit plan, asset held for investment, participant loan, maturity date |
Nov. 30, 2039
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Equity Index Fund J |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 126,461
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2030 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 81,122
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2035 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 96,843
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2040 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 75,162
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2045 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 74,269
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2050 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 67,006
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2055 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 48,562
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2060 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 37,004
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index 2065 O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 19,651
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Lifepath® Index Retirement O |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 65,719
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Mid Cap Equity Index Fund M |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 10,582
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock Russell 2000 Index Fund M |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 1,624
|
| Investment, Identifier [Axis]: BlackRock Institutional Trust Company, N.A BlackRock US Debt Index Fund M |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock Institutional Trust Company N.A [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 1,845
|
| Investment, Identifier [Axis]: Dodge & Cox Funds Dodge & Cox Income Fund |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Dodge & Cox Funds [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 16,615
|
| Investment, Identifier [Axis]: Fidelity Investments Inc. Fidelity® Government Money Market Fund Class K6 |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Fidelity Investments Inc [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 89
|
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
|
| Investment, Identifier [Axis]: Galliard Capital Management, LLC Galliard Stable Return Fund E |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Galliard Capital Management LLC [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 62,771
|
| Investment, Identifier [Axis]: Great Gray Trust Company, LLC Galliard Retirement Income Fund Class F35 |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company, LLC [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 346
|
| Investment, Identifier [Axis]: Harbor Funds Harbor Capital Appreciation R |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Harbor Funds [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 70,339
|
| Investment, Identifier [Axis]: IS MSCI EAFE INTL K iShares MSCI Europe, Australasia and Far East (EAFE®) International Index Fund Class K |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
IS MSCI EAFE INTL K [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 5,222
|
| Investment, Identifier [Axis]: Martin Marietta Materials, Inc. Common Stock |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Martin Marietta Materials, Inc [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
EBP, Employer, Common Stock [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 60,667
|
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
|
| Investment, Identifier [Axis]: The Vanguard Group Vanguard Explorer Fund Admiral Shares |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
The Vanguard Group [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 28,197
|
| Investment, Identifier [Axis]: The Vanguard Group Vanguard International Growth Fund Admiral Shares |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
The Vanguard Group [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 35,271
|
| Investment, Identifier [Axis]: Washington Mutual American Funds Washington Mutual Class R-6 |
|
| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Washington Mutual [Member]
|
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
|
| Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value |
$ 55,979
|