0001193125-26-059193 | 10-K | XBRL Viewer | Martin Marietta Materials INC

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Other Nonoperating Income, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Component of Other Operating Income and Expense [Line Items]
Other nonoperating income, net	$ 19	$ 56	$ 58
Other Nonoperating Income, Net
Component of Other Operating Income and Expense [Line Items]
Interest income	10	40	47
Third-party railroad track maintenance expense	$ 13	$ 10	$ 9

Goodwill and Other Intangible Assets - Intangible Assets Deemed to Indefinite Life that are Therefore Not Amortized (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	$ 43	$ 38
Operating Permits
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	7	7
Use Rights
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	29	29
Trade names
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	7	2
Building Materials Business
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	36	36
Building Materials Business \| Operating Permits
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	7	7
Building Materials Business \| Use Rights
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	29	29
Building Materials Business \| Trade names
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	0	0
Specialties
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	7	2
Specialties \| Operating Permits
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	0	0
Specialties \| Use Rights
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	0	0
Specialties \| Trade names
Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite life intangible assets	$ 7	$ 2

- Definition

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

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+ Details

Segments

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Segments

Note O: Segments

As of December 31, 2025, the Building Materials business is comprised of four divisions that represent individual operating segments. These operating segments are consolidated into two reportable segments, the East Group and the West Group, for financial reporting purposes, as they meet the aggregation criteria. The Specialties business represents an individual operating and reportable segment. The accounting policies used for segment reporting are the same as those described in Note A.

The Company’s Chief Operating Decision Maker (CODM) is the Chair, President and Chief Executive Officer. The CODM reviews results by reportable segment on a quarterly basis and allocates resources to achieve the Company’s strategic objectives based on an evaluation of each reportable segment’s performance. This evaluation is largely based on segment earnings from operations, as management believes this is the best metric of segment profitability and operating performance. Segment earnings from operations is also a measure in the determination of incentive compensation targets and awards. Segment earnings from operations include revenues less cost of revenues; selling, general and administrative expenses; other operating income and expenses, net; and exclude interest income and expense; other nonoperating income and expenses, net; and income tax expense. The significant expense categories shown below align with the segment-level information regularly provided to the CODM. Other costs of revenues for each reportable segment include mainly repairs and maintenance, contract services, supplies and royalties.

Corporate loss from operations primarily includes depreciation and amortization of corporate assets; expenses for corporate administrative functions; acquisition, divestiture and integration expenses; and other nonrecurring income and expenses not attributable to operations of the Company's other operating segments.

Earnings from operations for the West Group included an asset and portfolio rationalization charge of $21 million (see note R) in 2025; a $1.3 billion gain and $16 million of transaction expenses in 2024 and $6 million of transaction expenses in 2023 on the divestiture of the South Texas cement business and certain of its related ready mixed concrete operations (see Note B); and an asset and portfolio rationalization charge of $50 million (see Note R) in 2024.

The following tables display selected financial data for the Company’s reportable segments and reflect continuing operations only. Revenues, as presented on the consolidated statements of earnings, reflect the elimination of intersegment revenues, which represent sales from one segment to another segment and are immaterial. Income tax expense is not allocated to the Company's reportable segments.


year ended December 31, 2025 (in millions)	East Group			West Group		Specialties		Total Reportable Segments		Corporate			Total
Segment Revenues	$	3,194		$	2,515	$	441	$	6,150	$	—		$	6,150
Less:
Labor and benefits expense		417			300		59		776		3			779
Raw materials expense		89			128		26		243		—			243
Depreciation, depletion and amortization expense		314			212		26		552		3			555
Energy expense		146			103		36		285		—			285
External freight expense		114			234		39		387		—			387
Other costs of revenues		962			915		118		1,995		17			2,012
Selling, general and administrative expenses		164			147		27		338		105			443
Acquisition, divestiture and integration expenses		—			—		—		—		15			15
Other operating (income) expense, net		(4	)		21		—		17		(23	)		(6	)
Segment Earnings (Loss) from Operations	$	992		$	455	$	110	$	1,557	$	(120	)	$	1,437
Interest expense														230
Other nonoperating income, net														(19	)
Earnings from continuing operations before income tax expense													$	1,226


year ended December 31, 2024 (in millions)	East Group		West Group			Specialties			Total Reportable Segments			Corporate			Total
Segment Revenues	$	2,941	$	2,401		$	320		$	5,662		$	—		$	5,662
Less:
Labor and benefits expense		391		296			39			726			1			727
Raw materials expense		96		178			18			292			—			292
Depreciation, depletion and amortization expense		259		191			15			465			3			468
Energy expense		145		105			31			281			—			281
External freight expense		108		208			31			347			—			347
Other costs of revenues		905		892			79			1,876			35			1,911
Selling, general and administrative expenses		139		136			20			295			134			429
Acquisition, divestiture and integration expenses		—		16			—			16			34			50
Other operating expense (income), net		7		(1,303	)		(3	)		(1,299	)		(23	)		(1,322	)
Segment Earnings (Loss) from Operations	$	891	$	1,682		$	90		$	2,663		$	(184	)		2,479
Interest expense																169
Other nonoperating income, net																(56	)
Earnings from continuing operations before income tax expense															$	2,366


year ended December 31, 2023 (in millions)	East Group			West Group			Specialties		Total Reportable Segments			Corporate			Total
Segment Revenues	$	2,763		$	2,773		$	315	$	5,851		$	—		$	5,851
Less:
Labor and benefits expense		362			328			36		726			(7	)		719
Raw materials expense		104			251			22		377			—			377
Depreciation, depletion and amortization expense		205			206			13		424			3			427
Energy expense		152			163			37		352			—			352
External freight expense		113			221			30		364			—			364
Other costs of revenues		854			932			80		1,866			1			1,867
Selling, general and administrative expenses		124			139			18		281			144			425
Acquisition, divestiture and integration expenses		—			6			—		6			6			12
Other operating (income) expense, net		(8	)		(7	)		3		(12	)		(13	)		(25	)
Segment Earnings (Loss) from Operations	$	857		$	534		$	76	$	1,467		$	(134	)	$	1,333
Interest expense																165
Other nonoperating income, net																(58	)
Earnings from continuing operations before income tax expense															$	1,226

Assets employed by segment include assets directly identified with those operations, including assets held for sale. Corporate assets consist primarily of cash, cash equivalents and restricted cash; property, plant and equipment for corporate operations; and other assets not directly identifiable with a reportable segment. Assets held for sale associated with discontinued operations are predominantly included in the West Group. The increase in assets employed in the Specialties segment is primarily due to the Premier acquisition (see Note B). The decrease in assets employed in the Corporate segment primarily relates to a decrease in cash and cash equivalents.


December 31 (in millions) Assets employed	2025		2024
East Group	$	8,783	$	8,452
West Group		7,972		7,941
Specialties		883		269
Total reportable segments		17,638		16,662
Corporate		1,073		1,508
Total	$	18,711	$	18,170

The following tables display property additions for the Company's reportable segments:


years ended December 31 (in millions) Total property additions, including the impact of acquisitions	2025		2024		2023
East Group	$	537	$	3,185	$	231
West Group		300		1,216		342
Specialties		377		32		39
Total reportable segments		1,214		4,433		612
Corporate		26		22		14
Total	$	1,240	$	4,455	$	626


years ended December 31 (in millions) Property additions through acquisitions	2025		2024		2023
East Group	$	92	$	2,853	$	—
West Group		2		732		—
Specialties		335		—		—
Total reportable segments		429		3,585		—
Corporate		—		—		—
Total	$	429	$	3,585	$	—

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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+ Details

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2025
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Revenues and Gross Profit - Additional Information (Detail 1)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Minimum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period			1 month
Minimum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-01-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period		1 month
Minimum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-01-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period	1 month
Maximum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period			22 months
Maximum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-01-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period		36 months
Maximum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-01-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period	24 months

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Summary of Unaudited Pro Forma Financial Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Business Combination [Abstract]
Revenues	$ 5,714	$ 6,076
Net earnings from continuing operations attributable to Martin Marietta	$ 1,848	$ 939

Document and Entity Information - USD ($)

12 Months Ended

Dec. 31, 2025

Feb. 16, 2026

Jun. 30, 2025

Cover [Abstract]

Document Type

10-K

Amendment Flag

false

Document Fiscal Year Focus

2025

Document Period End Date

Dec. 31, 2025

Document Annual Report

true

Document Transition Report

false

Entity File Number

1-12744

Entity Registrant Name

MARTIN MARIETTA MATERIALS, INC.

Document Fiscal Period Focus

Trading Symbol

MLM

Entity Central Index Key

0000916076

Entity Incorporation, State or Country Code

Entity Tax Identification Number

56-1848578

Entity Address, Address Line One

4123 Parklake Avenue

Entity Address, City or Town

Raleigh

Entity Address, State or Province

Entity Address, Postal Zip Code

27612

City Area Code

919

Local Phone Number

781-4550

Title of 12(b) Security

Common Stock (par value $.01 per share)

Security Exchange Name

NYSE

Entity Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

Entity Current Reporting Status

Yes

Entity Interactive Data Current

Yes

Entity Filer Category

Large Accelerated Filer

Entity Shell Company

false

Entity Common Stock, Shares Outstanding

60,312,046

Entity Public Float

$ 28,822,918,628

Entity Emerging Growth Company

false

Entity Small Business

false

Current Fiscal Year End Date

--12-31

ICFR Auditor Attestation Flag

true

Document Financial Statement Error Correction [Flag]

false

Auditor Name

PricewaterhouseCoopers LLP

Auditor Firm ID

238

Auditor Location

Raleigh, North Carolina, United States

Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE


Document		Parts Into Which Incorporated
Proxy Statement for the Annual Meeting of Shareholders to be held May 14, 2026 (Proxy Statement)		Part III

Auditor Opinion

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Martin Marietta Materials, Inc. and its subsidiaries (the "Company") as of December 31, 2025 and December 31, 2024, and the related consolidated statements of earnings, of comprehensive earnings, of total equity and of cash flows for each of the three years in the period ended December 31, 2025, including the related notes and schedule of valuation and qualifying accounts for each of the three years in the period ended December 31, 2025 appearing under Item 15(a)(2) (collectively referred to as the "consolidated financial statements"). We also have audited the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and December 31, 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Retirement and Other Benefit Plans - Schedule of Funded Status (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Accrued benefit credit	$ 384	$ 271
Pension
Defined Benefit Plan Disclosure [Line Items]
Funded status of the plan at end of year	384	271
Accrued benefit credit	$ 384	$ 271

- Definition

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

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+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Components of Income Tax Expense From Continuing Operations

The components of the Company’s income tax expense from continuing operations are as follows:


years ended December 31 (in millions)	2025		2024			2023
Federal income taxes:
Current	$	138	$	539		$	209
Deferred		56		(60	)		(9	)
Total federal income taxes		194		479			200
State income taxes:
Current		31		77			37
Deferred		8		(6	)		(3	)
Total state income taxes		39		71			34
Foreign income taxes:
Current		2		—			—
Deferred		1		—			—
Total current foreign income taxes		3		—			—
Income tax expense	$	236	$	550		$	234

Components Domestic and Foreign Pretax Earnings From Continuing Operations

The domestic and foreign components of pretax earnings from continuing operations for the years ended December 31, 2025, 2024 and 2023 are as follows:


years ended December 31 (in millions)	2025		2024		2023
Domestic	$	1,207	$	2,353	$	1,218
Foreign		19		13		8
Earnings from continuing operations before income tax expense	$	1,226	$	2,366	$	1,226

Summary of Effective Income Tax Rate On Continuing Operations

The Company’s effective income tax rate on continuing operations varied from the statutory United States income tax rate due to the following tax differences:


years ended December 31	2025						2024						2023
(in millions, except percentages)	Amount			Percent			Amount			Percent			Amount			Percent
U.S. federal statutory tax rate	$	258			21.0	%	$	497			21.0	%	$	257			21.0	%
State and local income taxes, net of federal income tax effect (a)		30			2.4			57			2.4			27			2.2
Foreign tax effects		(1	)		(0.1	)		(2	)		(0.1	)		(5	)		(0.4	)
Tax credits:
Railroad maintenance credits		(13	)		(1.0	)		(10	)		(0.4	)		(9	)		(0.7	)
Other		(6	)		(0.5	)		(10	)		(0.4	)		(6	)		(0.5	)
Nontaxable or nondeductible items:
Goodwill write-off for divestiture		—			—			48			2.0			—			—
Other		6			0.5			5			0.2			2			0.2
Other adjustments:
Effects of statutory depletion		(38	)		(3.1	)		(35	)		(1.5	)		(32	)		(2.7	)
Effective income tax rate	$	236			19.2	%	$	550			23.2	%	$	234			19.1	%

a) State taxes in California, Minnesota, Colorado, Texas, Georgia, and Florida made up the majority (greater than 50 percent) of the tax effect in this category in 2025; state taxes in California, Texas, and Colorado made up the majority of the tax effect in this category in 2024; and state taxes in Texas, California, Colorado, and Minnesota made up the majority of the tax effect in this category in 2023.

Summary of the amounts of cash taxes paid (refunded) by the company

The amounts of income taxes paid (refunded) by the Company are as follows:


years ended December 31 (in millions)	2025		2024			2023
Federal	$	141	$	319		$	249
State:
Texas		14	*			*
Other		37		64			41
Foreign		—		(1	)		2
Income taxes paid, net of amounts refunded	$	192	$	382		$	292

* Jurisdiction below the threshold for the period presented.

Components of Deferred Tax Assets and Liabilities

The principal components of the Company’s deferred tax assets and liabilities are as follows:


December 31	Deferred Assets (Liabilities)
(in millions)	2025			2024
Deferred tax assets related to:
Inventories	$	163		$	147
Valuation and other reserves		65			65
Net operating loss carryforwards		3			2
Accumulated other comprehensive loss		18			41
Lease liabilities		171			147
Other items, net		2			13
Gross deferred tax assets		422			415
Valuation allowance on deferred tax assets		(1	)		(2	)
Total net deferred tax assets		421			413
Deferred tax liabilities related to:
Property, plant and equipment		(1,203	)		(1,158	)
Goodwill and other intangibles		(212	)		(171	)
Right-of-use assets		(167	)		(144	)
Partnerships and joint ventures		(51	)		(47	)
Employee benefits		(54	)		(62	)
Total deferred tax liabilities		(1,687	)		(1,582	)
Deferred income taxes, net	$	(1,266	)	$	(1,169	)

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) $ in Billions	Apr. 05, 2024 USD ($)
Business Combination [Abstract]
Mineral reserves	$ 1.9

Other Operating Income, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Other operating income and expenses, net	$ 6	$ 1,322	$ 25
Gain on sale of investment		1,300
West Group
Property, Plant and Equipment [Line Items]
Asset and portfolio rationalization charge	21
South Texas Cement Business
Property, Plant and Equipment [Line Items]
Gain on sale of investment		1,300
Asset and portfolio rationalization charge		50
Land
Property, Plant and Equipment [Line Items]
Other operating income and expenses, net	$ 18	$ 28	$ 20

Retirement and Other Benefit Plans - Schedule of Components of Net Periodic Benefit Cost (Detail) - Pension - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 36	$ 38	$ 33
Interest cost	58	55	51
Expected return on assets	(83)	(79)	(71)
Amortization of prior service cost	6	6	6
Amortization of actuarial loss	2	2	1
Settlement charge	5	0	0
Net periodic benefit cost	$ 24	$ 22	$ 20

- Definition

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

+ References

+ Details

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense of intangible assets	$ 26	$ 23	$ 22

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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+ Details

Debt (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Long-Term Debt


December 31 (in millions)	2025			2024
7% Debentures, due 2025	$	—		$	125
3.450% Senior Notes, due 2027		299			299
3.500% Senior Notes, due 2027		493			493
2.500% Senior Notes, due 2030		473			472
2.400% Senior Notes, due 2031		891			890
5.150% Senior Notes, due 2034		739			738
6.25% Senior Notes, due 2037		229			228
4.250% Senior Notes, due 2047		591			591
3.200% Senior Notes, due 2051		851			851
5.500% Senior Notes, due 2054		727			726
Trade Receivable Facility, interest rate of 4.57% at December 31, 2025		30			—
Total debt		5,323			5,413
Less: current maturities		(30	)		(125	)
Long-term debt	$	5,293		$	5,288

On December 1, 2025, the Company used available liquidity to repay the $125 million of 7% Debentures at maturity.

Schedule of Principal Amount, Effective Interest Rate and Maturity Date for Corporation's Senior Notes


	Principal Amount (in millions)		Effective Interest Rate	Maturity Date
3.450% Senior Notes	$	300	3.55%	June 1, 2027
3.500% Senior Notes	$	495	3.61%	December 15, 2027
2.500% Senior Notes	$	478	2.71%	March 15, 2030
2.400% Senior Notes	$	896	2.48%	July 15, 2031
5.150% Senior Notes	$	750	5.33%	December 1, 2034
6.25% Senior Notes	$	230	6.32%	May 1, 2037
4.250% Senior Notes	$	598	4.32%	December 15, 2047
3.200% Senior Notes	$	866	3.29%	July 15, 2051
5.500% Senior Notes	$	750	5.70%	December 1, 2054

Schedule of Corporation's Long-Term Debt Maturities

The Company’s long-term debt maturities for each of the next five years and thereafter are as follows:


(in millions)
2026	$	30
2027		792
2028		—
2029		—
2030		473
Thereafter		4,028
Total	$	5,323

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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+ Details

Revenues and Gross Profit - Domestic and Foreign Total Revenues (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total	$ 1,534	$ 1,846	$ 1,609	$ 1,161	$ 1,412	$ 1,642	$ 1,552	$ 1,056	$ 6,150	$ 5,662	$ 5,851
Domestic
Segment Reporting Information [Line Items]
Total									6,092	5,613	5,781
Foreign
Segment Reporting Information [Line Items]
Total									$ 58	$ 49	$ 70

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Leases - Summary of Balance Sheet Classifications of Operating and Finance Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Operating Leases:
Operating lease right-of-use assets	$ 367	$ 366
Current operating lease liabilities	62	55
Noncurrent operating lease liabilities	320	327
Total operating lease liabilities	$ 382	$ 382
Finance Leases:
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Property, plant and equipment	$ 368	$ 253
Accumulated depreciation	(79)	(58)
Property, plant and equipment, net	289	195
Other current liabilities	$ 15	$ 13
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Other noncurrent liabilities	$ 287	$ 190
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities
Total finance lease liabilities	$ 302	$ 203
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities	Liabilities

Quarterly Information (Unaudited) - Quarterly Results of Continuing Operations (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 1,534	$ 1,846	$ 1,609	$ 1,161	$ 1,412	$ 1,642	$ 1,552	$ 1,056	$ 6,150	$ 5,662	$ 5,851
Gross Profit	468	611	496	314	424	513	449	250	1,889	1,636	1,745
Earnings from continuing operations	233	361	292	104	248	297	241	1,030	990	1,816	992
Consolidated net earnings	279	414	328	116	294	363	294	1,045	1,137	1,996	1,170
Net Earnings Attributable to Martin Marietta	$ 279	$ 414	$ 328	$ 116	$ 294	$ 363	$ 293	$ 1,045	$ 1,137	$ 1,995	$ 1,169

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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Reference 40: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B

Reference 41: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-2

Reference 42: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A

Reference 43: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A

Reference 44: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (f)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481538/470-20-65-4

Goodwill and Other Intangible Assets - Estimated Amortization Expense of Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
2026	$ 25
2027	25
2028	25
2029	24
2030	23
Thereafter	294
Net Balance	$ 416	$ 439

Segments - Financial Data for Continuing Operations for Company's Reportable Business Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Assets employed	$ 18,711	$ 18,170
Total property additions, including the impact of acquisitions	1,240	4,455	$ 626
Property additions through acquisitions	429	3,585	0
Reportable Segments
Segment Reporting Information [Line Items]
Assets employed	17,638	16,662
Total property additions, including the impact of acquisitions	1,214	4,433	612
Property additions through acquisitions	429
Operating Segments \| East Group
Segment Reporting Information [Line Items]
Assets employed	8,783	8,452
Total property additions, including the impact of acquisitions	537	3,185	231
Property additions through acquisitions	92	2,853	0
Operating Segments \| West Group
Segment Reporting Information [Line Items]
Assets employed	7,972	7,941
Total property additions, including the impact of acquisitions	300	1,216	342
Property additions through acquisitions	2	732	0
Operating Segments \| Specialties
Segment Reporting Information [Line Items]
Assets employed	883	269
Total property additions, including the impact of acquisitions	377	32	39
Property additions through acquisitions	335	0	0
Corporate
Segment Reporting Information [Line Items]
Assets employed	1,073	1,508
Total property additions, including the impact of acquisitions	26	22	14
Property additions through acquisitions	$ 0	$ 0	$ 0

Cybersecurity Risk Management, Strategy and Governance	12 Months Ended
Cybersecurity Risk Management, Strategy and Governance	Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	ITEM 1C – CYBERSECURITY Risk Management and Strategy Martin Marietta prioritizes the management of cybersecurity risk and the protection of information across the enterprise by embedding data protection and cybersecurity risk management in its operations. The Company’s processes for assessing, identifying and managing material risks from cybersecurity threats have been integrated into the Company’s overall risk management system and processes. As a foundation of this approach, the Company has implemented a layered governance framework designed to assess, identify and manage cybersecurity risks. Martin Marietta’s cybersecurity policies encompass incident response procedures and information security. To develop these policies and procedures, the Company monitors privacy and cybersecurity laws, regulations and guidance applicable thereto, as well as proposed privacy and cybersecurity laws, regulations, guidance and emerging risks. The Company partners with leading cybersecurity firms and organizations, utilizing third-party technology and expertise, to monitor and evaluate the performance and effectiveness of its cybersecurity controls and defenses and to supplement the expertise that the Company’s security managers possess. Furthermore, the Company conducts assessments of information technology and cybersecurity third-party providers during the initial review process and periodically thereafter. As described in Item 1A, Risk Factors of this Form 10-K, the Company faces risks from cybersecurity threats that could have a material adverse effect on its business, including its business strategy, results of operations or financial condition. While the Company has experienced attacks on the security of its information technology systems to date, management is not aware that the Company has experienced a material cybersecurity incident during the 2025 fiscal year. Governance As part of its overall risk management approach, the Company prioritizes the identification and management of cybersecurity risk at several levels, including Board oversight, day-to-day executive risk management and employee training. The Audit Committee, comprised of independent directors from the Board, oversees the Board’s responsibilities relating to the operational risks, including information technology risks, business continuity and data security, of the Company. The Audit Committee is informed of such risks through quarterly reports from the Senior Vice President, Chief Information Officer (CIO), who oversees the implementation and compliance with information security standards and mitigation of cybersecurity related risks, assesses and manages the cyber risk management program, determines when third-party cybersecurity experts should be consulted, and informs senior management regarding the prevention, detection, mitigation and remediation of cybersecurity incidents with the support of the cybersecurity incident management team. The Company’s cybersecurity incident management team has decades of experience selecting, deploying and operating cybersecurity technologies, initiatives and processes as well as managing enterprise risk. The Incident Response Leadership Committee, which includes senior executives across the Company, is alerted as appropriate to cybersecurity incidents, and the CIO is responsible for communicating to the Audit Committee regarding the activities of the Incident Response Leadership Committee, as appropriate. The CIO has over 20 years of experience in information technology and business operations. He holds a Master of Business Administration and a Bachelor of Engineering, along with various business and strategic leadership certificates. The Company's Vice President (VP), Infrastructure and Security, who reports directly to the CIO, is responsible for day-to-day assessment and management of cybersecurity risk and the Company’s cybersecurity incident management team and acts as a chief information security officer. The VP, Infrastructure and Security has 39 years of information technology experience, including 23 years of experience in information security. Additionally, he holds various information technology certificates, including Certified Information Systems Security Professional and Certified Information Security Manager certificates. The Company holds annual employee trainings on cybersecurity, conducts phishing tests and generally seeks to promote awareness of cybersecurity risk through communication and education initiatives.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Martin Marietta prioritizes the management of cybersecurity risk and the protection of information across the enterprise by embedding data protection and cybersecurity risk management in its operations. The Company’s processes for assessing, identifying and managing material risks from cybersecurity threats have been integrated into the Company’s overall risk management system and processes.
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Governance As part of its overall risk management approach, the Company prioritizes the identification and management of cybersecurity risk at several levels, including Board oversight, day-to-day executive risk management and employee training. The Audit Committee, comprised of independent directors from the Board, oversees the Board’s responsibilities relating to the operational risks, including information technology risks, business continuity and data security, of the Company. The Audit Committee is informed of such risks through quarterly reports from the Senior Vice President, Chief Information Officer (CIO), who oversees the implementation and compliance with information security standards and mitigation of cybersecurity related risks, assesses and manages the cyber risk management program, determines when third-party cybersecurity experts should be consulted, and informs senior management regarding the prevention, detection, mitigation and remediation of cybersecurity incidents with the support of the cybersecurity incident management team. The Company’s cybersecurity incident management team has decades of experience selecting, deploying and operating cybersecurity technologies, initiatives and processes as well as managing enterprise risk. The Incident Response Leadership Committee, which includes senior executives across the Company, is alerted as appropriate to cybersecurity incidents, and the CIO is responsible for communicating to the Audit Committee regarding the activities of the Incident Response Leadership Committee, as appropriate. The CIO has over 20 years of experience in information technology and business operations. He holds a Master of Business Administration and a Bachelor of Engineering, along with various business and strategic leadership certificates. The Company's Vice President (VP), Infrastructure and Security, who reports directly to the CIO, is responsible for day-to-day assessment and management of cybersecurity risk and the Company’s cybersecurity incident management team and acts as a chief information security officer. The VP, Infrastructure and Security has 39 years of information technology experience, including 23 years of experience in information security. Additionally, he holds various information technology certificates, including Certified Information Systems Security Professional and Certified Information Security Manager certificates. The Company holds annual employee trainings on cybersecurity, conducts phishing tests and generally seeks to promote awareness of cybersecurity risk through communication and education initiatives.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee, comprised of independent directors from the Board, oversees the Board’s responsibilities relating to the operational risks, including information technology risks, business continuity and data security, of the Company.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee is informed of such risks through quarterly reports from the Senior Vice President, Chief Information Officer (CIO), who oversees the implementation and compliance with information security standards and mitigation of cybersecurity related risks, assesses and manages the cyber risk management program, determines when third-party cybersecurity experts should be consulted, and informs senior management regarding the prevention, detection, mitigation and remediation of cybersecurity incidents with the support of the cybersecurity incident management team.
Cybersecurity Risk Role of Management [Text Block]	As part of its overall risk management approach, the Company prioritizes the identification and management of cybersecurity risk at several levels, including Board oversight, day-to-day executive risk management and employee training. The Audit Committee, comprised of independent directors from the Board, oversees the Board’s responsibilities relating to the operational risks, including information technology risks, business continuity and data security, of the Company. The Audit Committee is informed of such risks through quarterly reports from the Senior Vice President, Chief Information Officer (CIO), who oversees the implementation and compliance with information security standards and mitigation of cybersecurity related risks, assesses and manages the cyber risk management program, determines when third-party cybersecurity experts should be consulted, and informs senior management regarding the prevention, detection, mitigation and remediation of cybersecurity incidents with the support of the cybersecurity incident management team. The Company’s cybersecurity incident management team has decades of experience selecting, deploying and operating cybersecurity technologies, initiatives and processes as well as managing enterprise risk. The Incident Response Leadership Committee, which includes senior executives across the Company, is alerted as appropriate to cybersecurity incidents, and the CIO is responsible for communicating to the Audit Committee regarding the activities of the Incident Response Leadership Committee, as appropriate. The CIO has over 20 years of experience in information technology and business operations. He holds a Master of Business Administration and a Bachelor of Engineering, along with various business and strategic leadership certificates. The Company's Vice President (VP), Infrastructure and Security, who reports directly to the CIO, is responsible for day-to-day assessment and management of cybersecurity risk and the Company’s cybersecurity incident management team and acts as a chief information security officer. The VP, Infrastructure and Security has 39 years of information technology experience, including 23 years of experience in information security. Additionally, he holds various information technology certificates, including Certified Information Systems Security Professional and Certified Information Security Manager certificates.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Chief Information Officer (CIO), who oversees the implementation and compliance with information security standards and mitigation of cybersecurity related risks, assesses and manages the cyber risk management program, determines when third-party cybersecurity experts should be consulted, and informs senior management regarding the prevention, detection, mitigation and remediation of cybersecurity incidents with the support of the cybersecurity incident management team. The Company’s cybersecurity incident management team has decades of experience selecting, deploying and operating cybersecurity technologies, initiatives and processes as well as managing enterprise risk. The Incident Response Leadership Committee, which includes senior executives across the Company, is alerted as appropriate to cybersecurity incidents, and the CIO is responsible for communicating to the Audit Committee regarding the activities of the Incident Response Leadership Committee, as appropriate. The CIO has over 20 years of experience in information technology and business operations. He holds a Master of Business Administration and a Bachelor of Engineering, along with various business and strategic leadership certificates. The Company's Vice President (VP), Infrastructure and Security, who reports directly to the CIO, is responsible for day-to-day assessment and management of cybersecurity risk and the Company’s cybersecurity incident management team and acts as a chief information security officer. The VP, Infrastructure and Security has 39 years of information technology experience, including 23 years of experience in information security. Additionally, he holds various information technology certificates, including Certified Information Systems Security Professional and Certified Information Security Manager certificates.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The CIO has over 20 years of experience in information technology and business operations. He holds a Master of Business Administration and a Bachelor of Engineering, along with various business and strategic leadership certificates. The Company's Vice President (VP), Infrastructure and Security, who reports directly to the CIO, is responsible for day-to-day assessment and management of cybersecurity risk and the Company’s cybersecurity incident management team and acts as a chief information security officer. The VP, Infrastructure and Security has 39 years of information technology experience, including 23 years of experience in information security. Additionally, he holds various information technology certificates, including Certified Information Systems Security Professional and Certified Information Security Manager certificates.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Company’s cybersecurity incident management team has decades of experience selecting, deploying and operating cybersecurity technologies, initiatives and processes as well as managing enterprise risk. The Incident Response Leadership Committee, which includes senior executives across the Company, is alerted as appropriate to cybersecurity incidents, and the CIO is responsible for communicating to the Audit Committee regarding the activities of the Incident Response Leadership Committee, as appropriate. The CIO has over 20 years of experience in information technology and business operations. He holds a Master of Business Administration and a Bachelor of Engineering, along with various business and strategic leadership certificates. The Company's Vice President (VP), Infrastructure and Security, who reports directly to the CIO, is responsible for day-to-day assessment and management of cybersecurity risk and the Company’s cybersecurity incident management team and acts as a chief information security officer. The VP, Infrastructure and Security has 39 years of information technology experience, including 23 years of experience in information security. Additionally, he holds various information technology certificates, including Certified Information Systems Security Professional and Certified Information Security Manager certificates.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Debt - Long-Term Debt (Parenthetical) (Detail)		12 Months Ended
Debt - Long-Term Debt (Parenthetical) (Detail)	Nov. 04, 2024	Dec. 31, 2025	Dec. 01, 2025
7% Debentures, Due 2025
Debt Instrument [Line Items]
Maturity year		2025
Interest rate on notes		7.00%	7.00%
3.450% Senior Notes, Due 2027
Debt Instrument [Line Items]
Maturity year		2027
Interest rate on notes		3.45%
3.500% Senior Notes, Due 2027
Debt Instrument [Line Items]
Maturity year		2027
Interest rate on notes		3.50%
2.500% Senior Notes, Due 2030
Debt Instrument [Line Items]
Maturity year		2030
Interest rate on notes		2.50%
2.400% Senior Notes, Due 2031
Debt Instrument [Line Items]
Maturity year		2031
Interest rate on notes		2.40%
5.150% Senior Notes, Due 2034
Debt Instrument [Line Items]
Maturity year	2034	2034
Interest rate on notes	5.15%	5.15%
6.25% Senior Notes, Due 2037
Debt Instrument [Line Items]
Maturity year		2037
Interest rate on notes		6.25%
4.250% Senior Notes, Due 2047
Debt Instrument [Line Items]
Maturity year		2047
Interest rate on notes		4.25%
3.200% Senior Notes, Due 2051
Debt Instrument [Line Items]
Maturity year		2051
Interest rate on notes		3.20%
5.500% Senior Notes, Due 2054
Debt Instrument [Line Items]
Maturity year	2054	2054
Interest rate on notes	5.50%	5.50%
Trade Receivable Facility
Debt Instrument [Line Items]
Interest rate on notes		4.57%

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Note C: Goodwill and Other Intangible Assets

The following table shows the changes in goodwill by reportable segment and in total:


December 31	East Group			West Group			Specialties		Total
(in millions)	2025
Balance at beginning of period	$	1,031		$	2,362		$	—	$	3,393
Acquisitions		5			—			209		214
Adjustments to purchase price allocations		(1	)		8			—		7
Balance at end of period	$	1,035		$	2,370		$	209	$	3,614

	2024
Balance at beginning of period	$	764		$	2,625		$	—	$	3,389
Acquisitions		267			111			—		378
Goodwill allocated to assets held for sale		—			(374	)		—		(374	)
Balance at end of period	$	1,031		$	2,362		$	—	$	3,393

Intangible assets subject to amortization consist of the following:


December 31	Gross Amount		Accumulated Amortization			Net Balance
(in millions)	2025
Noncompetition agreements	$	1	$	(1	)	$	—
Customer relationships		418		(99	)		319
Operating permits		110		(33	)		77
Use rights and other		29		(14	)		15
Trade names		10		(5	)		5
Total	$	568	$	(152	)	$	416

	2024
Noncompetition agreements	$	4	$	(4	)	$	—
Customer relationships		415		(79	)		336
Operating permits		110		(30	)		80
Use rights and other		29		(12	)		17
Trade names		10		(4	)		6
Total	$	568	$	(129	)	$	439

Intangible assets deemed to have an indefinite life that are therefore not amortized consist of the following:


December 31	Building Materials Business		Specialties		Total
(in millions)	2025
Operating permits	$	7	$	—	$	7
Use rights		29		—		29
Trade names		—		7		7
Total	$	36	$	7	$	43

	2024
Operating permits	$	7	$	—	$	7
Use rights		29		—		29
Trade names		—		2		2
Total	$	36	$	2	$	38

All intangible assets acquired during 2025 were from business combinations and are as follows:


(in millions, except year data)	Amount		Weighted-average amortization period
Subject to amortization:
Customer relationships	$	3	8 years
Total subject to amortization	$	3	8 years
Not subject to amortization:
Trade names		5	N/A
Total	$	8

Amortization expense for intangible assets for the years ended December 31, 2025, 2024 and 2023 was $26 million, $23 million and $22 million, respectively.

The estimated amortization expense for intangible assets for each of the next five years and thereafter is as follows:


(in millions)
2026	$	25
2027		25
2028		25
2029		24
2030		23
Thereafter		294
Total	$	416

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended								12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 279	$ 414	$ 328	$ 116	$ 294	$ 363	$ 293	$ 1,045	$ 1,137	$ 1,995	$ 1,169

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Retirement and Other Benefit Plans

12 Months Ended

Dec. 31, 2025

Retirement Benefits [Abstract]

Retirement and Other Benefit Plans

Note J: Retirement and Other Benefit Plans

Defined Benefit Retirement Plans. The Company sponsors defined benefit retirement plans that cover substantially all employees. Defined retirement benefits for salaried employees are based on each employee’s years of service and average compensation for a specified period of time before retirement. Defined retirement benefits for hourly employees are generally stated amounts for specified periods of service.

The Company sponsors a Supplemental Excess Retirement Plan (SERP) that generally provides for the payment of retirement benefits in excess of allowable Internal Revenue Code limits. The SERP generally provides for a lump-sum payment of vested benefits. When these benefit payments exceed the sum of the service and interest costs for the SERP during a year, the Company recognizes a pro rata portion of the SERP’s unrecognized actuarial loss as settlement expense.

The net periodic benefit cost of defined benefit plans includes the following components:


years ended December 31 (in millions)	2025			2024			2023
Service cost	$	36		$	38		$	33
Interest cost		58			55			51
Expected return on assets		(83	)		(79	)		(71	)
Amortization of:
Prior service cost		6			6			6
Actuarial loss		2			2			1
Settlement charge		5			—			—
Net periodic benefit cost	$	24		$	22		$	20

The components of net periodic benefit cost, other than service cost, are included in the line item Other nonoperating income, net, in the consolidated statements of earnings. Based on the roles of the employees, service cost is included in Cost of revenues or Selling, general and administrative expenses line items in the consolidated statements of earnings.

The expected return on assets is calculated by applying an annually selected expected long-term rate of return assumption to the estimated fair value of the plan assets during the year, giving consideration to contributions and benefits paid.

The Company recognized the following pretax amounts in consolidated comprehensive earnings:


years ended December 31
(in millions)	2025			2024			2023
Actuarial (gain) loss	$	(83	)	$	(44	)	$	21
Amortization of:
Prior service cost		(6	)		(6	)		(6	)
Actuarial loss		(2	)		(2	)		(1	)
Settlement charge		(5	)		—			—
Total	$	(96	)	$	(52	)	$	14

Accumulated other comprehensive (earnings) loss includes the following amounts that have not yet been recognized in net periodic benefit cost:


December 31	2025						2024
(in millions)	Gross			Net of tax			Gross		Net of tax
Prior service cost	$	31		$	44		$	37	$	7
Actuarial (gain) loss		(72	)		(102	)		17		3
Total	$	(41	)	$	(58	)	$	54	$	10

The defined benefit plans’ change in projected benefit obligation is as follows:


years ended December 31
(in millions)	2025			2024
Net projected benefit obligation at beginning of year	$	967		$	970
Service cost		36			38
Interest cost		58			55
Actuarial loss (gain)		7			(46	)
Gross benefits paid		(60	)		(50	)
Net projected benefit obligation at end of year	$	1,008		$	967

The largest component of the actuarial gain in 2024 was the impact of the higher discount rate compared with 2023.

The Company’s change in plan assets, funded status and amounts recognized on the Company’s consolidated balance sheets are as follows:


years ended December 31
(in millions)	2025			2024
Fair value of plan assets at beginning of year	$	1,238		$	1,177
Actual return on plan assets, net		172			77
Employer contributions		42			34
Gross benefits paid		(60	)		(50	)
Fair value of plan assets at end of year	$	1,392		$	1,238


December 31
(in millions)	2025		2024
Funded status of the plan at end of year	$	384	$	271
Accrued benefit credit	$	384	$	271


December 31
(in millions)	2025			2024
Amounts recognized on consolidated balance sheets consist of:
Noncurrent asset	$	487		$	371
Current liability		(17	)		(13	)
Noncurrent liability		(86	)		(87	)
Net amount recognized at end of year	$	384		$	271

The accumulated benefit obligation for all defined benefit pension plans was $921 million and $879 million at December 31, 2025 and 2024, respectively.

Benefit obligations and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets are as follows:


December 31
(in millions)	2025		2024
Projected benefit obligation	$	103	$	100
Accumulated benefit obligation	$	95	$	90
Fair value of plan assets	$	—	$	—

Weighted-average assumptions used to determine benefit obligations as of December 31 are:


	2025	2024
Discount rate	5.97%	6.00%
Rate of increase in future compensation levels	4.50%	4.50%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31 are:


	2025	2024	2023
Discount rate	6.00%	5.58%	5.88%
Rate of increase in future compensation levels	4.50%	4.50%	4.50%
Expected long-term rate of return on assets	6.75%	6.75%	6.75%

The expected long-term rate of return on pension fund assets is based on the current asset class mix of the Company's pension plan assets, current capital market conditions and a stochastic forecast of future conditions.

As of December 31, 2025 and 2024, the Company estimated the remaining lives of participants in the pension plans using the Pri-2012 Base tables. The no-collar table was used for salaried participants and the blue-collar table was used for hourly participants; the tables were adjusted to reflect both the mortality experience of the Company’s participants and a geospatial mortality analysis. The Company used the MP-2020 mortality improvement scale for 2025 and 2024.

Retirement plan assets are invested in listed stocks, bonds, real estate, private infrastructure and cash equivalents. The target allocation for 2025 and the actual pension plan asset allocation by asset class are as follows:


	Percentage of Plan Assets
		2025
		Target	December 31
Asset Class		Allocation	2025	2024
Equity securities		56%	58%	58%
Debt securities		28%	24%	22%
Real estate		10%	10%	10%
Private infrastructure		6%	7%	8%
Cash		0%	1%	2%
Total		100%	100%	100%

The Company’s investment strategy is for equity securities to be invested in mid-sized to large capitalization U.S. funds, and small capitalization, international and emerging growth funds. Debt securities, or fixed income investments, are invested in funds benchmarked to the Barclays U.S. Aggregate Bond Index.

The fair values of pension plan assets by asset class and fair value hierarchy level are as follows:


	Fair Value Measurements
December 31		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Net Asset Value		Total Fair Value
(in millions)		2025
Equity securities1:
Mid-sized to large cap		$	—	$	—	$	—	$	391	$	391
Small cap, international and emerging growth funds			—		—		—		425		425
Debt securities1:
Core fixed income			—		—		—		334		334
Real estate			—		—		—		134		134
Private infrastructure			—		—		—		100		100
Cash equivalents			—		—		—		8		8
Total		$	—	$	—	$	—	$	1,392	$	1,392

		2024
Equity securities1:
Mid-sized to large cap		$	—	$	—	$	—	$	359	$	359
Small cap, international and emerging growth funds			—		—		—		361		361
Debt securities1:
Core fixed income			—		—		—		271		271
Real estate			—		—		—		130		130
Private infrastructure			—		—		—		96		96
Cash equivalents			—		—		—		21		21
Total		$	—	$	—	$	—	$	1,238	$	1,238

These investments are common collective investment trusts valued using the net asset value (NAV) unit price provided by the fund administrator. The NAV is based on the value of the underlying assets owned by the fund.

Real estate investments are stated at estimated fair value, which is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Real estate investments are valued at NAV based on the plan’s proportionate shares of the real estate funds’ fair value as recorded by the trustees/general partner of the funds. The funds are real estate investment trust based funds that offer participation in an actively managed, primarily core portfolio of equity real estate. The funds allocate gains, losses and expenses to investors based on the ownership percentage to determine the NAV. Private infrastructure assets represent investments in a fund that is stated at fair value. For financial assets in the fund that are actively traded in organized financial markets, fair value is based on exchange-quoted market prices. For investments in the fund for which there is no quoted market price, fair value is determined by the trustees/general partner of the fund based on discounted expected future cash flows prepared by third-party professionals.

In 2025 and 2024, the Company made combined pension plan and SERP contributions of $42 million and $34 million, respectively. The Company currently estimates that it will contribute $25 million to its pension and SERP plans in 2026.

The expected benefit payments to be paid from plan assets for each of the next five years and the five-year period thereafter are as follows:


(in millions)
2026	$	71
2027	$	63
2028	$	63
2029	$	64
2030	$	66
Years 2031 - 2035	$	360

Postretirement and Postemployment Benefits. The Company provides other postretirement benefits for certain employees, including medical benefits for retirees and their spouses and retiree life insurance. Employees starting on or after January 1, 2002 are not eligible for postretirement welfare plans. Postretirement medical benefits are paid from the Company's assets. The obligation, if any, for retiree medical payments is subject to the terms of the plan. At both December 31, 2025 and 2024, the Company's recorded benefit obligation related to these benefits totaled $7 million. The Company also provides certain benefits, such as disability benefits, to former or inactive employees after employment but before retirement.

Defined Contribution Plan. The Company maintains a defined contribution plan that covers substantially all employees. This plan, qualified under Section 401(a) of the Internal Revenue Code, is a retirement savings and investment plan for the Company’s salaried and hourly employees. Under certain provisions of the plan, the Company matches employees’ eligible contributions at established rates. The Company’s matching obligations were $23 million in 2025 and $22 million in both 2024 and 2023.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Paragraph 3
-Subparagraph (c)
-Publisher FASB
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

Reference 7: http://www.xbrl.org/2003/role/exampleRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Retirement and Other Benefit Plans - Net Periodic Benefit Credit or Cost Not Yet Recognized (Detail) - Pension - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Prior service (credit) - Gross	$ 31	$ 37
Actuarial (gain) loss - Gross	(72)	17
Total - Gross	(41)	54
Prior service cost (credit) - Net of tax	44	7
Actuarial loss - Net of tax	(102)	3
Total - Net of tax	$ (58)	$ 10

- Definition

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

+ References

+ Details

Segments - Schedule of Consolidated Earnings from Continuing Operations Before Income Tax Expense (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Segment Revenues	$ 1,534	$ 1,846	$ 1,609	$ 1,161	$ 1,412	$ 1,642	$ 1,552	$ 1,056	$ 6,150	$ 5,662	$ 5,851
Labor and benefits expense									779	727	719
Raw materials expense									243	292	377
Depreciation, depletion and amortization expense									555	468	427
Energy expense									285	281	352
External freight expense									387	347	364
Other costs of revenues									2,012	1,911	1,867
Selling, general and administrative expenses									443	429	425
Acquisition, divestiture and integration expenses									15	50	12
Other operating (income) expense, net									(6)	(1,322)	(25)
Segment Earnings (Loss) from Operations									1,437	2,479	1,333
Interest expense									230	169	165
Other nonoperating income, net									(19)	(56)	(58)
Earnings from continuing operations before income tax expense									1,226	2,366	1,226
Operating Segments \| East Group
Segment Reporting Information [Line Items]
Segment Revenues									3,194	2,941	2,763
Labor and benefits expense									417	391	362
Raw materials expense									89	96	104
Depreciation, depletion and amortization expense									314	259	205
Energy expense									146	145	152
External freight expense									114	108	113
Other costs of revenues									962	905	854
Selling, general and administrative expenses									164	139	124
Acquisition, divestiture and integration expenses									0	0	0
Other operating (income) expense, net									(4)	7	(8)
Segment Earnings (Loss) from Operations									992	891	857
Operating Segments \| West Group
Segment Reporting Information [Line Items]
Segment Revenues									2,515	2,401	2,773
Labor and benefits expense									300	296	328
Raw materials expense									128	178	251
Depreciation, depletion and amortization expense									212	191	206
Energy expense									103	105	163
External freight expense									234	208	221
Other costs of revenues									915	892	932
Selling, general and administrative expenses									147	136	139
Acquisition, divestiture and integration expenses									0	16	6
Other operating (income) expense, net									21	(1,303)	(7)
Segment Earnings (Loss) from Operations									455	1,682	534
Operating Segments \| Specialties
Segment Reporting Information [Line Items]
Segment Revenues									441	320	315
Labor and benefits expense									59	39	36
Raw materials expense									26	18	22
Depreciation, depletion and amortization expense									26	15	13
Energy expense									36	31	37
External freight expense									39	31	30
Other costs of revenues									118	79	80
Selling, general and administrative expenses									27	20	18
Acquisition, divestiture and integration expenses									0	0	0
Other operating (income) expense, net									0	(3)	3
Segment Earnings (Loss) from Operations									110	90	76
Operating Segments \| Reportable Segments
Segment Reporting Information [Line Items]
Segment Revenues									6,150	5,662	5,851
Labor and benefits expense									776	726	726
Raw materials expense									243	292	377
Depreciation, depletion and amortization expense									552	465	424
Energy expense									285	281	352
External freight expense									387	347	364
Other costs of revenues									1,995	1,876	1,866
Selling, general and administrative expenses									338	295	281
Acquisition, divestiture and integration expenses									0	16	6
Other operating (income) expense, net									17	(1,299)	(12)
Segment Earnings (Loss) from Operations									1,557	2,663	1,467
Corporate
Segment Reporting Information [Line Items]
Segment Revenues									0	0	0
Labor and benefits expense									3	(1)	7
Raw materials expense									0	0	0
Depreciation, depletion and amortization expense									3	3	3
Energy expense									0	0	0
External freight expense									0	0	0
Other costs of revenues									17	35	1
Selling, general and administrative expenses									105	134	144
Acquisition, divestiture and integration expenses									15	34	6
Other operating (income) expense, net									(23)	(23)	(13)
Segment Earnings (Loss) from Operations									$ (120)	$ (184)	$ (134)

Revenues and Gross Profit - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue Recognition [Line Items]
Service revenues	$ 1,534	$ 1,846	$ 1,609	$ 1,161	$ 1,412	$ 1,642	$ 1,552	$ 1,056	$ 6,150	$ 5,662	$ 5,851
Gross Profit	468	$ 611	$ 496	$ 314	424	$ 513	$ 449	$ 250	1,889	1,636	1,745
Revenues, discontinued operations									845	874	1,021
Gross profit, discontinued operations									$ 212	242	276
Performance obligations, description of timing									The Company’s product sales agreements are single-performance obligations that are satisfied at a point in time, and customer payment terms are generally 30 days from the invoice date. Performance obligations within paving service agreements are satisfied over time, primarily ranging from one day to two years. Customer payments for the paving operations are based on a contractual billing schedule and are typically "paid-when-paid", meaning the Company is paid once the customer is paid.
Future revenues from unsatisfied performance obligations	$ 162				$ 255				$ 162	255	251
Product and freight revenues customer payment terms									30 days
Interproduct Revenues
Revenue Recognition [Line Items]
Service revenues									$ (287)	(250)	(245)
West Group \| Operating Segments
Revenue Recognition [Line Items]
Service revenues									2,515	2,401	2,773
Service \| CALIFORNIA and COLORADO \| West Group
Revenue Recognition [Line Items]
Service revenues									$ 356	411	411
Cement and Ready Mixed Concrete
Revenue Recognition [Line Items]
Service revenues										1,100	1,500
Gross Profit										260	436
Revenues, discontinued operations										874	1,000
Gross profit, discontinued operations										242	276
Asphalt and Paving Services [Member]
Revenue Recognition [Line Items]
Service revenues										869	887
Gross Profit										$ 101	$ 109
Minimum \| Service
Revenue Recognition [Line Items]
Performance obligations, period									1 day
Maximum \| Service
Revenue Recognition [Line Items]
Performance obligations, period									2 years

Commitments and Contingencies - Contractual Purchase Commitments (Detail) $ in Millions	Dec. 31, 2025 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2026	$ 174
2027	31
2028	13
2029	11
2030	12
Thereafter	32
Total	$ 273

Accounting Policies - Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - Pension and Postretirement Benefit Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings from Continuing Operations	$ 9	$ 6	$ 4
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Settlement charge	5	0	0
Prior service cost	6	6	6
Actuarial loss	1	1	0
Tax effect	(3)	(1)	(2)
Earnings from Continuing Operations	9	6	4
Reclassification out of Accumulated Other Comprehensive Income \| Other Nonoperating Income, Net
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications out of accumulated other comprehensive loss before taxes	$ 12	$ 7	$ 6

Inventories, Net (Tables)

12 Months Ended

Dec. 31, 2025

Inventory Disclosure [Abstract]

Schedule of Inventories Net


December 31 (in millions)	2025			2024
Finished products	$	1,378		$	1,316
Products in process		14			8
Raw materials		49			42
Supplies and expendable parts		124			106
Total inventories		1,565			1,472
Less: allowances		(487	)		(454	)
Inventories, net	$	1,078		$	1,018

Goodwill and Other Intangible Assets - Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 568	$ 568
Accumulated Amortization	(152)	(129)
Net Balance	416	439
Noncompetition agreements
Finite-Lived Intangible Assets [Line Items]
Gross Amount	1	4
Accumulated Amortization	(1)	(4)
Net Balance	0	0
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	418	415
Accumulated Amortization	(99)	(79)
Net Balance	319	336
Operating Permits
Finite-Lived Intangible Assets [Line Items]
Gross Amount	110	110
Accumulated Amortization	(33)	(30)
Net Balance	77	80
Use Rights And Other
Finite-Lived Intangible Assets [Line Items]
Gross Amount	29	29
Accumulated Amortization	(14)	(12)
Net Balance	15	17
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	10	10
Accumulated Amortization	(5)	(4)
Net Balance	$ 5	$ 6

- Definition

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

+ References

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+ Details

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Current Assets:
Cash and cash equivalents	$ 67	$ 670
Accounts receivable, net	723	678
Inventories, net	1,078	1,018
Current assets held for sale	1,230	15
Other current assets	95	68
Total Current Assets	3,193	2,449
Property, plant and equipment, net	10,290	9,660
Goodwill	3,614	3,393
Other intangibles, net	459	477
Operating lease right-of-use assets, net	367	366
Noncurrent assets held for sale	0	1,179
Other noncurrent assets	788	646
Total Assets	18,711	18,170
Current Liabilities:
Accounts payable	389	375
Accrued salaries, benefits and payroll taxes	100	73
Accrued income taxes	5	102
Accrued other taxes	46	45
Current maturities of long-term debt	30	125
Current operating lease liabilities	62	55
Unpaid commitments to limited liability companies	51	44
Other current liabilities	212	183
Total Current Liabilities	895	1,002
Long-term debt	5,293	5,288
Deferred income taxes, net	1,266	1,169
Noncurrent operating lease liabilities	320	327
Other noncurrent liabilities	903	928
Total Liabilities	8,677	8,714
Commitments and Contingent Liabilities - Note N
Equity:
Common stock ($0.01 par value; 100,000,000 shares authorized; 60,309,739 shares and 61,126,646 shares outstanding at December 31 , 2025 and 2024, respectively)	1	1
Preferred stock ($0.01 par value; 10,000,000 shares authorized; no shares outstanding)	0	0
Additional paid-in capital	3,569	3,550
Accumulated other comprehensive earnings (loss)	60	(13)
Retained earnings	6,402	5,915
Total Shareholders’ Equity	10,032	9,453
Noncontrolling interests	2	3
Total Equity	10,034	9,456
Total Liabilities and Equity	$ 18,711	$ 18,170

Retirement and Other Benefit Plans - Schedule of Target Assets Allocation (Detail)	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Other securities, Target Allocation	100.00%
Total	100.00%	100.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Other securities, Target Allocation	56.00%
Total	58.00%	58.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Other securities, Target Allocation	28.00%
Total	24.00%	22.00%
Real Estate
Defined Benefit Plan Disclosure [Line Items]
Other securities, Target Allocation	10.00%
Total	10.00%	10.00%
Private infrastructure
Defined Benefit Plan Disclosure [Line Items]
Other securities, Target Allocation	6.00%
Total	7.00%	8.00%
Cash
Defined Benefit Plan Disclosure [Line Items]
Other securities, Target Allocation	0.00%
Total	1.00%	2.00%

- Definition

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

+ References

+ Details

Revenues and Gross Profit - Total Revenues and Gross Profit (Loss) by Product Line (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Product Information [Line Items]
Revenues	$ 1,534	$ 1,846	$ 1,609	$ 1,161	$ 1,412	$ 1,642	$ 1,552	$ 1,056	$ 6,150	$ 5,662	$ 5,851
Gross profit (loss)	$ 468	$ 611	$ 496	$ 314	$ 424	$ 513	$ 449	$ 250	1,889	1,636	1,745
Interproduct Revenues
Product Information [Line Items]
Revenues									(287)	(250)	(245)
Corporate
Product Information [Line Items]
Revenues									0	0	0
Gross profit (loss)									(23)	(39)	3
Building Materials Business \| Operating Segments
Product Information [Line Items]
Revenues									5,709	5,342	5,536
Gross profit (loss)									1,775	1,568	1,645
Specialties \| Operating Segments
Product Information [Line Items]
Revenues									441	320	315
Gross profit (loss)									137	107	97
Other Building Materials \| Building Materials Business \| Operating Segments \| Reportable Subsegments
Product Information [Line Items]
Revenues									992	1,078	1,479
Gross profit (loss)									98	119	267
Aggregates \| Building Materials Business \| Operating Segments \| Reportable Subsegments
Product Information [Line Items]
Revenues									5,004	4,514	4,302
Gross profit (loss)									$ 1,677	$ 1,449	$ 1,378

Leases - Summary of Components of Lease Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 79	$ 74	$ 72
Finance lease cost:
Amortization of right-of-use assets	21	20	15
Interest on lease liabilities	10	6	4
Variable lease cost	18	14	18
Short-term lease cost	50	46	44
Total lease cost	$ 178	$ 160	$ 153

Other Nonoperating Income, Net

12 Months Ended

Dec. 31, 2025

Other Income and Expenses [Abstract]

Other Nonoperating Income, Net

Note S: Other Nonoperating Income, Net

Other nonoperating income, net, is comprised generally of interest income; foreign currency transaction gains and losses; pension and postretirement benefit cost (excluding service cost); net equity earnings from nonconsolidated investments and other miscellaneous income and expenses. Other nonoperating income, net, was $19 million, $56 million and $58 million in 2025, 2024

and 2023, respectively. In 2025, other nonoperating income, net, included $10 million of interest income and $13 million of third-party railroad track maintenance expense. In 2024, other nonoperating income, net, included $40 million of interest income and $10 million of third-party railroad track maintenance expense. In 2023, other nonoperating income, net, included $47 million of interest income and $9 million of third-party railroad track maintenance expense.

Stock-Based Compensation - Summary Information for Restricted Stock Awards and Incentive Compensation Stock Awards (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restricted Stock - Service Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards, January 1, 2025	191,534
Number of Awards, Awarded	55,701
Number of Awards, Distributed	(73,623)
Number of Awards, Forfeited	(6,752)
Number of Awards, Adjustment for performance	0
Number of Awards, December 31, 2025	166,860	191,534
Weighted-Average Grant-Date Fair Value, January 1, 2025	$ 370.27
Weighted-Average Grant-Date Fair Value, Awarded	510.86	$ 553.17	$ 369.18
Weighted-Average Grant-Date Fair Value, Distributed	383.21
Weighted-Average Grant-Date Fair Value, Forfeited	470.05
Weighted-Average Grant-Date Fair Value, Adjustment for performance	0
Weighted-Average Grant-Date Fair Value, December 31, 2025	$ 407.46	$ 370.27
Restricted Stock - Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards, January 1, 2025	88,504
Number of Awards, Awarded	32,254
Number of Awards, Distributed	(66,977)
Number of Awards, Forfeited	(7,545)
Number of Awards, Adjustment for performance	38,268
Number of Awards, December 31, 2025	84,504	88,504
Weighted-Average Grant-Date Fair Value, January 1, 2025	$ 468.71
Weighted-Average Grant-Date Fair Value, Awarded	503.38	$ 595	392.73
Weighted-Average Grant-Date Fair Value, Distributed	417.26
Weighted-Average Grant-Date Fair Value, Forfeited	499.19
Weighted-Average Grant-Date Fair Value, Adjustment for performance	417.25
Weighted-Average Grant-Date Fair Value, December 31, 2025	$ 496.69	$ 468.71
Incentive Compensation Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards, January 1, 2025	15,543
Number of Awards, Awarded	8,234
Number of Awards, Distributed	(4,378)
Number of Awards, Forfeited	(377)
Number of Awards, Adjustment for performance	0
Number of Awards, December 31, 2025	19,022	15,543
Weighted-Average Grant-Date Fair Value, January 1, 2025	$ 497.76
Weighted-Average Grant-Date Fair Value, Awarded	489.84	$ 548.68	$ 362.08
Weighted-Average Grant-Date Fair Value, Distributed	367.88
Weighted-Average Grant-Date Fair Value, Forfeited	517.31
Weighted-Average Grant-Date Fair Value, Adjustment for performance	0
Weighted-Average Grant-Date Fair Value, December 31, 2025	$ 523.83	$ 497.76

Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2025

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net


December 31
(in millions)	2025			2024
Land and land improvements	$	1,929		$	1,786
Mineral reserves and interests		6,529			6,306
Buildings		193			160
Machinery and equipment		5,992			5,451
Construction in progress		319			286
Finance lease right-of-use assets		368			253
Total property, plant and equipment		15,330			14,242
Less: accumulated depreciation, depletion and amortization		(5,040	)		(4,582	)
Property, plant and equipment, net	$	10,290		$	9,660

Retirement and Other Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation for defined benefit pension plans	$ 921	$ 879
Combined pension plan and SERP contributions	42	34
Estimated contribution of pension plans	25
Corporation's matching obligations	$ 23	22	$ 22
Defined contribution plan name	401(a)
Postretirement Health Care Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation for defined benefit pension plans	$ 7	$ 7

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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- Definition

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

+ References

+ Details

Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Debt Instruments [Abstract]
Long-term debt, carrying values	$ 5,323	$ 5,413
Long-term debt, fair values	$ 4,900	$ 4,800

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details

Segments - Additional Information (Detail) $ in Millions	12 Months Ended
Segments - Additional Information (Detail) $ in Millions	Dec. 31, 2025 USD ($) Segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of divisions represent operating segments \| Segment	4
Reportable business segments \| Segment	2
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	Chair, President And Chief Executive Officer [Member]
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	Segment earnings from operations include revenues less cost of revenues; selling, general and administrative expenses; other operating income and expenses, net; and exclude interest income and expense; other nonoperating income and expenses, net; and income tax expense. The significant expense categories shown below align with the segment-level information regularly provided to the CODM.
Depreciation, depletion and amortization	$ 637	$ 573	$ 513
Gain on sale of investment		1,300
Nonrecurring gains on divested assets	25	1,369	2
West Group [Member]
Segment Reporting Information [Line Items]
Gain on sale of investment		1,300
Transaction expenses		16	$ 6
Noncash asset and portfolio rationalization charge	$ 21	$ 50

Revenues and Gross Profit (Tables)

12 Months Ended

Dec. 31, 2025

Revenues And Gross Profit [Abstract]

Total Revenues and Gross Profit (Loss) by Product Line

The following tables, which are reconciled to consolidated amounts and reflect continuing operations only, provide revenues and gross profit (loss) by line of business: Building Materials (further divided by product line) and Specialties. Interproduct revenues represent sales from the aggregates product line to the other building materials product line.


years ended December 31 (in millions) Revenues	2025			2024			2023
Building Materials business:
Aggregates	$	5,004		$	4,514		$	4,302
Other Building Materials		992			1,078			1,479
Less: interproduct revenues		(287	)		(250	)		(245	)
Total Building Materials business		5,709			5,342			5,536
Specialties		441			320			315
Total	$	6,150		$	5,662		$	5,851

years ended December 31 (in millions) Gross profit (loss)	2025			2024			2023
Building Materials business:
Aggregates	$	1,677		$	1,449		$	1,378
Other Building Materials		98			119			267
Total Building Materials business		1,775			1,568			1,645
Specialties		137			107			97
Corporate		(23	)		(39	)		3
Total	$	1,889		$	1,636		$	1,745

Domestic and Foreign Total Revenues

Domestic and foreign revenues are as follows:


years ended December 31 (in millions)	2025		2024		2023
Domestic	$	6,092	$	5,613	$	5,781
Foreign		58		49		70
Total	$	6,150	$	5,662	$	5,851

Supplemental Cash Flow Information - Supplemental Disclosures of Cash Flow Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest, net of amount capitalized	$ 229	$ 158	$ 159
Operating cash flows used for operating leases	82	77	77
Operating cash flows used for finance leases	10	6	5
Financing cash flows used for finance leases	$ 23	$ 20	$ 17

Leases - Summary of Weighted-average Remaining Lease Terms and Discount Rates (Detail)	Dec. 31, 2025	Dec. 31, 2024
Weighted-average remaining lease terms (years):
Operating leases	10 years 2 months 12 days	11 years 1 month 6 days
Finance leases	22 years	18 years 8 months 12 days
Weighted-average discount rates:
Operating leases	4.50%	4.60%
Finance leases	3.90%	3.30%

Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Total debt	$ 5,323	$ 5,413
Less: current maturities	(30)	(125)
Long-term debt	5,293	5,288
7% Debentures, Due 2025
Debt Instrument [Line Items]
Total debt	0	125
3.450% Senior Notes, Due 2027
Debt Instrument [Line Items]
Total debt	299	299
3.500% Senior Notes, Due 2027
Debt Instrument [Line Items]
Total debt	493	493
2.500% Senior Notes, Due 2030
Debt Instrument [Line Items]
Total debt	473	472
2.400% Senior Notes, Due 2031
Debt Instrument [Line Items]
Total debt	891	890
5.150% Senior Notes, Due 2034
Debt Instrument [Line Items]
Total debt	739	738
6.25% Senior Notes, Due 2037
Debt Instrument [Line Items]
Total debt	229	228
4.250% Senior Notes, Due 2047
Debt Instrument [Line Items]
Total debt	591	591
3.200% Senior Notes, Due 2051
Debt Instrument [Line Items]
Total debt	851	851
5.500% Senior Notes, Due 2054
Debt Instrument [Line Items]
Total debt	727	726
Trade Receivable Facility
Debt Instrument [Line Items]
Total debt	$ 30	$ 0

Consolidated Statements of Total Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total Shareholders' Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2022	$ 7,173	$ 1	$ 3,489	$ (38)	$ 3,719	$ 7,171	$ 2
Beginning Balance (in shares) at Dec. 31, 2022		62,102,353
Consolidated net earnings	1,170				1,169	1,169	1
Other comprehensive loss / earnings	(11)			(11)		(11)
Dividends declared	(174)				(174)	(174)
Issuances of common stock for stock award plans	2		2			2
Issuances of common stock for stock award plans (in shares)		100,588
Shares withheld for employees’ income tax obligations	(22)		(22)			(22)
Repurchases of common stock	$ (151)				(151)	(151)
Repurchases of common stock, Shares	(400,000)	(381,520)
Stock-based compensation expense	$ 50		50			50
Distribution to owners of noncontrolling interest	(1)						(1)
Ending Balance at Dec. 31, 2023	8,036	$ 1	3,519	(49)	4,563	8,034	2
Ending Balance (in shares) at Dec. 31, 2023		61,821,421
Consolidated net earnings	1,996				1,995	1,995	1
Other comprehensive loss / earnings	36			36		36
Dividends declared	(189)				(189)	(189)
Issuances of common stock for stock award plans	5		5			5
Issuances of common stock for stock award plans (in shares)		90,983
Shares withheld for employees’ income tax obligations	(32)		(32)			(32)
Repurchases of common stock	$ (454)				(454)	(454)
Repurchases of common stock, Shares	(800,000)	(785,758)
Stock-based compensation expense	$ 58		58			58
Ending Balance at Dec. 31, 2024	$ 9,456	$ 1	3,550	(13)	5,915	9,453	3
Ending Balance (in shares) at Dec. 31, 2024	61,126,646	61,126,646
Consolidated net earnings	$ 1,137				1,137	1,137
Other comprehensive loss / earnings	73			73		73
Dividends declared	(196)				(196)	(196)
Issuances of common stock for stock award plans	4		4			4
Issuances of common stock for stock award plans (in shares)		93,924
Shares withheld for employees’ income tax obligations	(31)		(31)			(31)
Repurchases of common stock	$ (454)				(454)	(454)
Repurchases of common stock, Shares	(900,000)	(910,831)
Stock-based compensation expense	$ 46		46			46
Distribution to owners of noncontrolling interest	(1)						(1)
Ending Balance at Dec. 31, 2025	$ 10,034	$ 1	$ 3,569	$ 60	$ 6,402	$ 10,032	$ 2
Ending Balance (in shares) at Dec. 31, 2025	60,309,739	60,309,739

Accounting Policies - Components of Changes in Accumulated Other Comprehensive Loss and Related Cumulative Noncurrent Deferred Tax Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 9,456	$ 8,036	$ 7,173
Ending Balance	10,034	9,456	8,036
Cumulative noncurrent deferred tax assets at end of period	18	41	54
Cumulative noncurrent deferred tax assets at end of period, Pension and postretirement benefit plans	18	41	54
Cumulative noncurrent deferred tax assets at end of period, Foreign currency	0	0	0
Pension and Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(9)	(48)	(36)
Other comprehensive earnings before reclassifications, net of tax	62	33	(16)
Amounts reclassified from accumulated other comprehensive loss, net of tax	9	6	4
Other comprehensive earnings , net of tax	71	39	(12)
Ending Balance	62	(9)	(48)
Foreign Currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4)	(1)	(2)
Other comprehensive earnings before reclassifications, net of tax	2	(3)	1
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0	0
Other comprehensive earnings , net of tax	2	(3)	1
Ending Balance	(2)	(4)	(1)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(13)	(49)	(38)
Other comprehensive earnings before reclassifications, net of tax	64	30	(15)
Amounts reclassified from accumulated other comprehensive loss, net of tax	9	6	4
Other comprehensive earnings , net of tax	73	36	(11)
Ending Balance	$ 60	$ (13)	$ (49)

Inventories, Net

12 Months Ended

Dec. 31, 2025

Inventory Disclosure [Abstract]

Inventories, Net

Note E: Inventories, Net


December 31 (in millions)	2025			2024
Finished products	$	1,378		$	1,316
Products in process		14			8
Raw materials		49			42
Supplies and expendable parts		124			106
Total inventories		1,565			1,472
Less: allowances		(487	)		(454	)
Inventories, net	$	1,078		$	1,018

Consolidated Statements of Comprehensive Earnings (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net gain (loss) arising during period, tax	$ 21	$ 11	$ (5)
Amortization of prior service cost, tax	2	1	2
Amortization of actuarial loss, tax	0	0	0
Amount recognized in net periodic pension cost due to settlement, tax	$ 1	$ 0	$ 0

Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table reconciles cash, cash equivalents and restricted cash as reported on the consolidated balance sheets to the aggregated amounts presented on the consolidated statements of cash flows:


December 31 (in millions)	2025		2024		2023
Cash and cash equivalents	$	67	$	670	$	1,272
Restricted cash		—		—		10
Total cash, cash equivalents and restricted cash presented in the consolidated statements of cash flows	$	67	$	670	$	1,282

Estimated Service Lives for Property Plant and Equipment

The estimated service lives for property, plant and equipment are as follows:


Class of Assets		Range of Service Lives
Buildings		5 to 30 years
Machinery & Equipment		2 to 20 years
Land Improvements		5 to 60 years

Components of Changes in Accumulated Other Comprehensive Loss and Related Cumulative Noncurrent Deferred Tax Assets

The components of the changes in accumulated other comprehensive earnings (loss) and related cumulative noncurrent deferred tax assets are as follows:


years ended December 31	Pension and Postretirement Benefit Plans			Foreign Currency			Total
(in millions)	2025
Accumulated other comprehensive loss at beginning of period	$	(9	)	$	(4	)	$	(13	)
Other comprehensive earnings before reclassifications, net of tax		62			2			64
Amounts reclassified from accumulated other comprehensive loss, net of tax		9			—			9
Other comprehensive earnings, net of tax		71			2			73
Accumulated other comprehensive earnings (loss) at end of period	$	62		$	(2	)	$	60
Cumulative noncurrent deferred tax assets at end of period	$	18		$	—		$	18

	2024
Accumulated other comprehensive loss at beginning of period	$	(48	)	$	(1	)	$	(49	)
Other comprehensive earnings (loss) before reclassifications, net of tax		33			(3	)		30
Amounts reclassified from accumulated other comprehensive loss, net of tax		6			—			6
Other comprehensive earnings (loss), net of tax		39			(3	)		36
Accumulated other comprehensive loss at end of period	$	(9	)	$	(4	)	$	(13	)
Cumulative noncurrent deferred tax assets at end of period	$	41		$	—		$	41

	2023
Accumulated other comprehensive loss at beginning of period	$	(36	)	$	(2	)	$	(38	)
Other comprehensive (loss) earnings before reclassifications, net of tax		(16	)		1			(15	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		4			—			4
Other comprehensive (loss) earnings, net of tax		(12	)		1			(11	)
Accumulated other comprehensive loss at end of period	$	(48	)	$	(1	)	$	(49	)
Cumulative noncurrent deferred tax assets at end of period	$	54		$	—		$	54

Reclassification Out of Accumulated Other Comprehensive Loss

Reclassifications out of accumulated other comprehensive loss are as follows:


years ended December 31 (in millions)	2025			2024			2023			Affected line items in the consolidated statements of earnings
Pension and postretirement benefit plans:
Settlement charge	$	5		$	—		$	—
Amortization of:
Prior service cost		6			6			6
Actuarial loss		1			1			—
		12			7			6		Other nonoperating income, net
Tax effect		(3	)		(1	)		(2	)	Income tax expense
Total	$	9		$	6		$	4

Basic and Diluted Earnings from Continuing Operations Per Common Share

The following table reconciles the denominator for basic and diluted earnings from continuing operations per common share:


years ended December 31 (in millions)	2025		2024		2023

Basic weighted-average common shares outstanding		60.5		61.4		61.9
Effect of dilutive employee and director awards		0.1		0.2		0.2
Diluted weighted-average common shares outstanding		60.6		61.6		62.1

Accounting Policies

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Accounting Policies

Note A: Accounting Policies

Organization. Martin Marietta is a natural resource-based building materials company. As of December 31, 2025, the Company supplies aggregates (crushed stone, sand and gravel) through its network of approximately 400 quarries, mines and distribution yards in 28 states, Canada and The Bahamas. Martin Marietta also provides other building materials, namely, cement, ready mixed concrete, asphalt and paving services, in vertically-integrated structured markets where the Company also has a notable aggregates position. Specifically, the Company has one cement plant and four cement distribution facilities in Texas; ready mixed concrete plants in Arizona and Texas; and asphalt plants in Arizona, California, Colorado and Minnesota. Asphalt paving services are located in Colorado.

The Company’s heavy-side building materials are used in infrastructure, nonresidential and residential construction projects. Aggregates are also used in agricultural, utility and environmental applications and as railroad ballast. The aggregates and other business materials product lines are reported collectively as the Building Materials business.

As of December 31, 2025, the Building Materials business includes two reportable segments: East Group and West Group. The East Group consists of the East and Central divisions and operates in Alabama, Florida, Georgia, Indiana, Iowa, Kansas, Kentucky, Maryland, Minnesota, Missouri, Nebraska, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia, Nova Scotia and The Bahamas. The West Group is comprised of the Southwest and West divisions and operates in Arizona, Arkansas, California, Colorado, Louisiana, Oklahoma, Texas, Utah, Washington and Wyoming. The following ten states accounted for 76% of the Building Materials business’ 2025 revenues: Texas, North Carolina, Colorado, California, Georgia, Florida, South Carolina, Arizona, Iowa, and Minnesota.

The Company also operates a Specialties business (formerly known as the Magnesia Specialties business), which represents a separate reportable segment. The Specialties business produces high-purity natural and synthetic magnesia-based products, including magnesium sulfate, magnesium oxide and magnesium hydroxide, used in environmental, industrial, agricultural, construction, consumer and specialty applications. The Specialties business also produces dolomitic lime, which is sold primarily to external customers for use in steel production and soil stabilization, and is used internally as a raw material input in synthetic magnesia production. The July 2025 acquisition of Premier Magnesia expanded the Company's product portfolio and enhanced its dolomitic magnesia mineral reserves and processing capabilities. Specialties’ production facilities are in Michigan, Ohio, Nevada, North Carolina, Indiana and Pennsylvania, and products are shipped to customers domestically and worldwide.

In August 2025, the Company entered into a definitive agreement for the exchange of certain assets (see Note B). The pending disposal of the Company's cement plant, related cement terminals and Texas ready mixed concrete plants meets the criteria for held for sale and the associated financial results of these operations are reported as discontinued operations for all periods presented. The Company has recast all comparative prior-period financial information presented in the financial statements and related notes to the financial statements, unless otherwise noted, to reflect this presentation.

Basis of Presentation and Use of Estimates. The Company’s consolidated financial statements are presented in conformity with accounting principles generally accepted in the United States, which require management to make certain estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenues and expenses. Such estimates include the valuation of accounts receivable, inventories, goodwill, other intangible assets and other long-lived assets, as well as assumptions used in the calculation of income tax expense, retirement and postemployment benefits, stock-based compensation, the allocation of the purchase price to the fair values of assets acquired and liabilities assumed as part of business combinations and revenue recognition for service contracts. These estimates and assumptions are based on management’s judgment. Management evaluates estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, and adjusts such estimates and assumptions when facts and circumstances dictate. Changes in interest rates, credit, equity and energy markets and changes in construction activity increase the uncertainty inherent in certain estimates and assumptions. Because future events and their effects cannot be determined with precision, actual results could differ significantly from estimates. Changes in estimates, including those resulting from changes in the economic environment, are reflected in the consolidated financial statements for the period in which the change in estimate occurs.

Basis of Consolidation. The consolidated financial statements include the accounts of the Company and its wholly-owned and majority-owned subsidiaries. Partially-owned affiliates are either consolidated or accounted for using the cost method or the equity method, depending on the level of ownership interest or the Company’s ability to exercise significant influence or control over the affiliates’ operations. Intercompany balances and transactions between subsidiaries have been eliminated in consolidation.

Revenue Recognition. Revenues include sales of products and services provided to customers, net of discounts or allowances, if any, and freight and delivery costs billed to customers. Product revenues are recognized when control of the promised good is transferred to unaffiliated customers, typically when finished products are shipped. Intersegment and interproduct revenues are eliminated in consolidation. Service revenues are derived from the paving business and are recognized using the percentage-of-completion method under the cost-to-cost approach. Under the cost-to-cost approach, recognized contract revenue is determined by multiplying the total estimated contract revenue by the estimated percentage of completion. Contract costs are recognized as incurred. The percentage of completion is determined on a contract-by-contract basis using project costs incurred to date as a percentage of total estimated project costs. The Company believes the cost-to-cost approach is appropriate, as the use of asphalt in a paving contract is relatively consistent with the performance of the related paving services. When the Company arranges third-party freight to deliver products to customers, the Company has elected the delivery to be a fulfillment activity rather than a separate performance obligation. Further, the Company acts as a principal in the delivery arrangements and, as required by Accounting Standards Codification 606, Revenues from Contracts with Customers (ASC 606), the related revenues and costs are presented gross in the consolidated statements of earnings and are recognized consistently with the timing of the product revenues.

Cash, Cash Equivalents and Restricted Cash. Cash equivalents are comprised of highly-liquid instruments with original maturities of three months or less from the date of purchase.

As of December 31, 2023, the Company had $10 million of restricted cash, which was invested in an account designated for the purchase of like-kind exchange replacement assets under Section 1031 of the Internal Revenue Code and related IRS procedures (Section 1031). The Company was restricted from utilizing the cash for purposes other than the purchase of qualified assets for 180 days from receipt of the proceeds from the sale of the exchanged property. Any unused restricted cash at the end of the 180 days was transferred to unrestricted accounts of the Company and used for general corporate purposes. The Company had no restricted cash as of December 31, 2025 and 2024.

The statements of cash flows reflect cash flow changes and balances for cash, cash equivalents and restricted cash on an aggregated basis. The following table reconciles cash, cash equivalents and restricted cash as reported on the consolidated balance sheets to the aggregated amounts presented on the consolidated statements of cash flows:


December 31 (in millions)	2025		2024		2023
Cash and cash equivalents	$	67	$	670	$	1,272
Restricted cash		—		—		10
Total cash, cash equivalents and restricted cash presented in the consolidated statements of cash flows	$	67	$	670	$	1,282

Accounts Receivable. Accounts receivable are stated at cost. The Company does not typically charge interest on customer accounts receivable. The Company records an allowance for credit losses, which includes a provision for probable losses based on historical write-offs, adjusted for current conditions as deemed necessary, and a specific reserve for accounts deemed at risk. Current conditions are assessed by considering factors such as changes in the economic environment, customer payment trends, and industry specific risks that may affect collectability. The allowance is the Company’s estimate for receivables as of the balance sheet date that ultimately will not be collected. Any changes in the allowance are reflected in earnings in the period in which the change occurs. The Company writes off accounts receivable when it becomes probable, based upon facts and circumstances, that such amounts will not be collected.

Inventories Valuation. Finished products and in-process inventories are stated at the lower of cost or net realizable value using standard costs, which approximate the first-in, first-out method. Carrying value for parts and supplies are determined by the weighted-average cost method. The Company records an allowance for finished product inventories based on an analysis of future demand and inventory on hand in excess of one year's sales using an average of the last two years of sales. The Company also establishes an allowance for parts over five years old and supplies over a year old.

Post-production stripping costs, which represent costs of removing overburden and waste materials to access mineral deposits, are a component of inventory production costs and recognized as incurred.

Property, Plant and Equipment. Property, plant and equipment are stated at cost.

The estimated service lives for property, plant and equipment are as follows:


Class of Assets		Range of Service Lives
Buildings		5 to 30 years
Machinery & Equipment		2 to 20 years
Land Improvements		5 to 60 years

The Company begins capitalizing quarry development costs at a point when reserves are determined to be proven or probable, economically mineable and when demand supports investment in the market. Capitalization of these costs ceases when production commences. Capitalized quarry development costs are classified as land improvements and depreciated over the life of the reserves.

The Company reviews relevant facts and circumstances to determine whether to capitalize or expense pre-production stripping costs when additional pits are developed at an existing quarry. If the additional pit operates in a separate and distinct area of the quarry, these costs are capitalized as quarry development costs and depreciated over the life of the uncovered reserves. Additionally, a separate asset retirement obligation is created for additional pits when the liability is incurred. Once a pit enters the production phase, all post-production stripping costs are charged to inventory production costs as incurred.

Mineral reserves and mineral interests acquired in connection with a business combination are valued using an income approach for the estimated life of the reserves.

Depreciation is computed based on estimated service lives using the straight-line method. Depletion of mineral reserves is calculated based on proven and probable reserves using the units-of-production method on a quarry-by-quarry basis. For the years ended December 31, 2025, 2024 and 2023, depletion expense was $103 million, $78 million and $53 million, respectively.

Property, plant and equipment are reviewed for impairment whenever facts and circumstances indicate that the carrying amount of an asset group may not be recoverable. An impairment loss is recognized if expected future undiscounted cash flows over the estimated remaining service life of the related asset group are less than the asset group’s carrying value.

Repair and Maintenance Costs. Repair and maintenance costs that do not substantially extend the life of the Company’s plant and equipment are expensed as incurred.

Leases. Pursuant to Accounting Standards Codification 842, Leases (ASC 842), if the Company determines a contract is or contains a lease at the inception of an agreement, the Company records a right-of-use (ROU) asset, which represents the Company’s right to use an underlying leased asset, and a lease liability, which represents the Company’s obligation to make lease payments. The ROU asset and lease liability are recorded on the consolidated balance sheets at the present value of the future lease payments over the lease term at commencement date. The Company determines the present value of lease payments based on the implicit interest rate, which may be explicitly stated in the lease, if available, or may be the Company’s estimated collateralized incremental borrowing rate based on the term of the lease. Initial ROU assets also include any lease payments made at or before commencement date and any initial direct costs incurred and are reduced by lease incentives. Certain of the Company’s leases contain renewal and/or termination options. The Company recognizes renewal or termination options as part of its ROU assets and lease liabilities when the Company has the unilateral right to renew or terminate and it is reasonably certain these options will be exercised.

Some leases require the Company to pay non-lease components, which are primarily variable costs and may include taxes, maintenance, insurance and certain other expenses applicable to the leased property. The Company accounts for lease and non-lease components as a single amount, except for railcar, fleet vehicle and pipeline leases, for which the Company separately accounts for the lease and non-lease components.

Leases are evaluated and determined to be either finance leases or operating leases. The lease is a finance lease if it transfers ownership to the underlying asset by the end of the lease term; includes a purchase option that is reasonably certain to be exercised; has a lease term for the major part of the underlying asset's remaining economic life; has a present value of the sum of the lease payments (including renewal options) that equals or exceeds substantially all of the fair value of the underlying asset; or is for an underlying asset that is of a specialized nature and is expected to have no alternative use to the lessor at the end of the lease term. If none of these terms exist, the lease is an operating lease.

Leases with an initial lease term of one year or less are not recorded on the consolidated balance sheets. Costs for these leases are expensed as incurred.

In the consolidated statements of earnings, operating lease expense, which is recognized on a straight-line basis over the lease term, and the amortization of finance lease ROU assets are included in the Cost of revenues or Selling, general and administrative expenses line items in the consolidated statements of earnings. Accretion on the liabilities for finance leases is included in interest expense.

Goodwill and Other Intangible Assets. Goodwill represents the excess purchase price paid for acquired businesses over the estimated fair value of identifiable assets and liabilities. Other intangible assets represent amounts assigned principally to contractual agreements and are either amortized ratably over the useful lives to the Company or not amortized if deemed to have an indefinite useful life. The Company intends, and believes it has the ability, to renew royalty agreements and extend permits that support the value of certain intangible assets.

The Company’s reporting units, which represent the level at which goodwill is tested for impairment, are based on the operating segments of the Building Materials and Specialties businesses. Goodwill is assigned to the respective reporting unit(s) based on the location of acquisitions at the time of consummation. If subsequent organizational changes result in operations being transferred to a different reporting unit, a proportionate amount of goodwill is transferred from the former to the new reporting unit. For divestitures, goodwill is allocated on a proportional basis based on the relative fair values of the portion of the reporting unit being disposed of and the portion of the reporting unit remaining.

Goodwill is tested for impairment by comparing each reporting unit’s fair value to its carrying value, which represents a Step-1 approach. However, prior to Step 1, the Company may perform a qualitative assessment and evaluate macroeconomic conditions, industry and market conditions, cost factors, overall financial performance and other business or reporting unit-specific events that contribute to the fair value of a reporting unit. If the Company concludes, based on its qualitative assessment, it is more-likely-than-not (i.e., a likelihood of more than 50%) that a reporting unit’s fair value is higher than its carrying value, the Company is not required to perform any further goodwill impairment testing for that reporting unit. Otherwise, the Company proceeds to Step 1, and if a reporting unit’s fair value exceeds its carrying value, there is no impairment. A reporting unit with a carrying value in excess of its fair value results in an impairment charge equal to the difference. When the Company validates its conclusion by measuring fair value, it may resume performing a qualitative assessment for a reporting unit in any subsequent period. The Company may bypass the qualitative assessment for any reporting unit in any period and proceed directly with the quantitative calculation in Step 1.

The Company reviews the carrying values of goodwill and other indefinite-lived intangible assets for impairment as of October 1, which represents the annual evaluation date. An interim review is performed between annual tests if facts and circumstances indicate potential impairment. The carrying value of other amortizable intangible assets is reviewed if facts and circumstances indicate potential impairment. If a review indicates the carrying value is impaired, a charge is recorded equal to the amount by which the carrying value exceeds the fair value.

Retirement Plans and Postretirement Benefits. The Company sponsors defined benefit retirement plans and provides other postretirement benefits. The Company recognizes the funded status, defined as the difference between the fair value of plan assets and the benefit obligation, of its pension plans and other postretirement benefits as an asset or liability on the consolidated balance sheets. The measurement date for the Company’s defined benefit plans and postretirement benefit plans is December 31. Actuarial gains or losses that arise during the year are recognized as a component of accumulated other comprehensive earnings or loss. Those amounts are amortized over the participants’ average remaining service period and recognized as a component of net periodic benefit cost. The amount amortized is determined on a plan-by-plan basis using a corridor approach and represents the excess over 10% of the greater of the projected benefit obligation or pension plan assets.

Insurance Accruals. The Company has insurance coverage with deductibles for workers’ compensation, automobile liability, marine liability and general liability claims, and is also self-insured for health claims. The Company records insurance accruals based on an actuarially-determined analysis, which calculates development factors that are applied to total case reserves within the insurance programs. While the Company believes the assumptions used to calculate these liabilities are appropriate, significant differences in actual experience and/or significant changes in these assumptions may materially affect insurance costs.

Stock-Based Compensation. The Company has stock-based compensation plans for employees and its Board of Directors. The Company recognizes all forms of stock-based awards that vest as compensation expense. The compensation expense is the fair value of the awards at the measurement date and is recognized over the requisite service period. Forfeitures are recognized as they occur.

The fair value of restricted stock awards, incentive compensation stock awards and Board of Directors’ fees paid in the form of common stock are based on the closing price of the Company’s common stock on the grant dates. The fair value of performance stock awards as of the grant dates is determined using a Monte Carlo simulation methodology.

Environmental Matters. The Company records a liability for an asset retirement obligation at fair value in the period in which it is incurred. The asset retirement obligation is recorded at the acquisition date of a long-lived tangible asset if the fair value can be reasonably estimated. A corresponding amount is capitalized as part of the asset’s carrying amount. The fair value is affected by management’s assumptions regarding the scope of the work, inflation rates and asset retirement dates.

Further, the Company records an accrual for other environmental remediation liabilities in the period in which it is probable that a liability has been incurred and the appropriate amounts can be reasonably estimated. Such accruals are adjusted as further information develops or circumstances change. Generally, these costs are not discounted to their present value or offset for potential insurance or other claims or potential gains from future alternative uses for a site.

Income Taxes. The Company uses the liability method to determine its current and deferred incomes taxes. Deferred income taxes, net, on the consolidated balance sheets reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The effect of changes in enacted tax rates on deferred income tax assets and liabilities is charged or credited to income tax expense in the period of enactment.

The Company applies the proportional amortization method to equity investments in renewable energy tax credit (RETC) programs that meet the following specified criteria: it is probable that the income tax credits allocable to the Company will be available; the Company does not have the ability to exercise significant influence over the operating and financial policies of the underlying project; substantially all of the projected benefits are from income tax credits and other income tax benefits, as determined on a discounted basis; the Company's projected yield based solely on the cash flows from the income tax credits and other income tax benefits is positive; and the Company is a limited liability investor in the limited liability entity for both legal and tax purposes and its liability is limited to its capital investment. Under the proportional amortization method, the equity investment is amortized in proportion to the income tax credits and other income tax benefits received, with the amortization expense and the income tax benefits presented on a net basis in the line item Income tax expense in the consolidated statements of earnings. The RETC investments are included in the line item Other noncurrent assets on the consolidated balance sheets and the line item Investments in limited liability companies on the consolidated statements of cash flows.

Uncertain Tax Positions. The Company recognizes a tax benefit when it is more-likely-than-not, based on the technical merits, that a tax position would be sustained upon examination by a taxing authority. The amount to be recognized is measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. The Company’s unrecognized tax benefits are recorded in other liabilities on the consolidated balance sheets or as an offset to the deferred tax asset for tax carryforwards where available.

The Company records interest accrued in relation to unrecognized tax benefits as income tax expense. Penalties, if incurred, are recorded as operating expenses in the consolidated statements of earnings.

Sales Taxes. The Company is deemed to be an agent when collecting sales taxes from customers. Sales taxes collected from customers are recorded as liabilities until remitted to taxing authorities and therefore are not reflected in the consolidated statements of earnings as revenues and expenses.

Start-Up Costs. Noncapital start-up costs for new facilities and products are charged to operations as incurred.

Consolidated Comprehensive Earnings and Accumulated Other Comprehensive Earnings (Loss). Consolidated comprehensive earnings (loss) consist of consolidated net earnings, adjustments for the funded status of pension and postretirement benefit plans and foreign currency translation adjustments and are presented in the Company’s consolidated statements of comprehensive earnings.

Accumulated other comprehensive earnings (loss) consists of unrecognized gains and losses related to the funded status of the pension and postretirement benefit plans and foreign currency translation and is presented on the Company’s consolidated balance sheets.

The components of the changes in accumulated other comprehensive earnings (loss) and related cumulative noncurrent deferred tax assets are as follows:


years ended December 31	Pension and Postretirement Benefit Plans			Foreign Currency			Total
(in millions)	2025
Accumulated other comprehensive loss at beginning of period	$	(9	)	$	(4	)	$	(13	)
Other comprehensive earnings before reclassifications, net of tax		62			2			64
Amounts reclassified from accumulated other comprehensive loss, net of tax		9			—			9
Other comprehensive earnings, net of tax		71			2			73
Accumulated other comprehensive earnings (loss) at end of period	$	62		$	(2	)	$	60
Cumulative noncurrent deferred tax assets at end of period	$	18		$	—		$	18

	2024
Accumulated other comprehensive loss at beginning of period	$	(48	)	$	(1	)	$	(49	)
Other comprehensive earnings (loss) before reclassifications, net of tax		33			(3	)		30
Amounts reclassified from accumulated other comprehensive loss, net of tax		6			—			6
Other comprehensive earnings (loss), net of tax		39			(3	)		36
Accumulated other comprehensive loss at end of period	$	(9	)	$	(4	)	$	(13	)
Cumulative noncurrent deferred tax assets at end of period	$	41		$	—		$	41

	2023
Accumulated other comprehensive loss at beginning of period	$	(36	)	$	(2	)	$	(38	)
Other comprehensive (loss) earnings before reclassifications, net of tax		(16	)		1			(15	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		4			—			4
Other comprehensive (loss) earnings, net of tax		(12	)		1			(11	)
Accumulated other comprehensive loss at end of period	$	(48	)	$	(1	)	$	(49	)
Cumulative noncurrent deferred tax assets at end of period	$	54		$	—		$	54

Reclassifications out of accumulated other comprehensive loss are as follows:


years ended December 31 (in millions)	2025			2024			2023			Affected line items in the consolidated statements of earnings
Pension and postretirement benefit plans:
Settlement charge	$	5		$	—		$	—
Amortization of:
Prior service cost		6			6			6
Actuarial loss		1			1			—
		12			7			6		Other nonoperating income, net
Tax effect		(3	)		(1	)		(2	)	Income tax expense
Total	$	9		$	6		$	4

Earnings Per Common Share. The numerator for basic and diluted earnings per common share is net earnings attributable to Martin Marietta. The denominator for basic earnings per common share is the weighted-average number of common shares outstanding during the period. Diluted earnings per common share is computed assuming that the weighted-average number of common shares is increased by the conversion, using the treasury stock method, of awards issued to employees and nonemployee members of the Company’s Board of Directors under certain stock-based compensation arrangements if the conversion is dilutive.

The following table reconciles the denominator for basic and diluted earnings from continuing operations per common share:


years ended December 31 (in millions)	2025		2024		2023

Basic weighted-average common shares outstanding		60.5		61.4		61.9
Effect of dilutive employee and director awards		0.1		0.2		0.2
Diluted weighted-average common shares outstanding		60.6		61.6		62.1

Reclassifications. Certain reclassifications have been made in the Company's financial statements and related notes of the prior years to conform to the current-year presentation, including recasting to reflect assets held for sale and discontinued operations. The reclassifications had no impact on the Company's previously reported results of operations, financial condition or cash flows.

New Accounting Pronouncements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which focuses on the rate reconciliation and income taxes paid. ASU 2023-09 requires public entities to disclose, on an annual basis, a tabular tax rate reconciliation using both percentages and currency amounts, disaggregated into specified categories. Certain reconciling items are further disaggregated by nature and jurisdiction to the extent those items exceed a specified threshold. Additionally, all entities are required to disclose income taxes paid, net of refunds received, disaggregated by federal, state/local, and foreign taxes and by individual jurisdiction if the amount is at least 5% of total income tax payments, net of refunds received. The ASU also requires additional qualitative disclosures. The Company adopted ASU 2023-09 as of December 31, 2025 and applied the disclosure requirements retrospectively to all prior periods presented in these financial statements (see Note I). The adoption had no impact on the Company's results of operations, cash flows or financial condition.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (DISE), which requires public entities to disaggregate any relevant expense caption presented on the face of the income statement within continuing operations into the following required natural expense categories, as applicable: (1) purchases of inventory, (2) employee compensation, (3) depreciation, (4) intangible asset amortization, and (5) depreciation, depletion and amortization recognized as part of oil- and gas-producing activities or other depletion expenses. These disclosures must be made in a tabular format in the notes to the financial statements. The new standard does not change the requirements for the presentation of expenses on the face of the statement of earnings. The ASU is effective prospectively for annual reporting periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, and early adoption and retrospective application are permitted. The ASU will impact the Company's expense disclosures beginning with the financial statements included in the 2027 Annual Report on Form 10-K, but will have no impact on its results of operations, cash flows or financial condition.

Accounts Receivable, Net

12 Months Ended

Dec. 31, 2025

Receivables [Abstract]

Accounts Receivable, Net

Note D: Accounts Receivable, Net


December 31
(in millions)	2025			2024
Customer receivables	$	715		$	678
Other current receivables		15			8
Total accounts receivable		730			686
Less: allowance for estimated credit losses		(7	)		(8	)
Accounts receivable, net	$	723		$	678

Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2025

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Note Q: Supplemental Cash Flow Information

Noncash investing and financing activities are as follows:


years ended December 31
(in millions)	2025			2024		2023
Accrued liabilities for purchases of property, plant and equipment	$	140		$	143	$	128
Right-of-use assets obtained in exchange for new operating lease liabilities	$	75		$	68	$	63
Right-of-use assets obtained in exchange for new finance lease liabilities	$	67		$	17	$	22
Remeasurement of finance lease right-of-use assets	$	50		$	27	$	—
Remeasurement of operating lease right-of-use assets	$	(1	)	$	7	$	10
Acquisition of assets through asset exchange	$	—		$	—	$	5

Supplemental disclosures of cash flow information are as follows:


years ended December 31
(in millions)	2025		2024		2023
Cash paid for interest, net of amount capitalized	$	229	$	158	$	159
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$	82	$	77	$	77
Operating cash flows used for finance leases	$	10	$	6	$	5
Financing cash flows used for finance leases	$	23	$	20	$	17

Income Taxes - Components Domestic and Foreign Pretax Earnings From Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Domestic	$ 1,207	$ 2,353	$ 1,218
Foreign	19	13	8
Earnings from continuing operations before income tax expense	$ 1,226	$ 2,366	$ 1,226

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

Leases

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Leases

Note L: Leases

The Company has leases, primarily for equipment, railcars, fleet vehicles, office space, land, information technology equipment and software. The Company’s leases have remaining lease terms, inclusive of options to renew that the Company is reasonably certain to exercise, ranging from less than one year to 46 years. Some of the Company's leases include options to terminate the leases within one year.

Certain of the Company’s lease agreements include payments based upon variable rates, including, but not limited to, hours used, tonnage processed and factors related to indices. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants.

The components of lease cost are as follows:


years ended December 31 (in millions)	2025		2024		2023
Operating lease cost	$	79	$	74	$	72
Finance lease cost:
Amortization of right-of-use assets		21		20		15
Interest on lease liabilities		10		6		4
Variable lease cost		18		14		18
Short-term lease cost		50		46		44
Total lease cost	$	178	$	160	$	153

The Company has royalty agreements that are prescriptively excluded from the scope of ASC 842 and generally require royalty payments based on tons produced, tons sold or total sales dollars and also contain minimum payments. Royalty expense was $104 million, $92 million and $86 million for the years ended December 31, 2025, 2024 and 2023, respectively.

The balance sheet classifications of operating and finance leases are as follows:


December 31 (in millions)	2025			2024
Operating leases:
Operating lease right-of-use assets	$	367		$	366

Current operating lease liabilities	$	62		$	55
Noncurrent operating lease liabilities		320			327
Total operating lease liabilities	$	382		$	382

Finance leases:
Property, plant and equipment	$	368		$	253
Accumulated depreciation		(79	)		(58	)
Property, plant and equipment, net	$	289		$	195

Other current liabilities	$	15		$	13
Other noncurrent liabilities		287			190
Total finance lease liabilities	$	302		$	203

The incremental borrowing rate ranged from 0.004% to 6.0% for the years ended December 31, 2025 and 2024. Weighted-average remaining lease terms and discount rates are as follows:


December 31		2025		2024
Weighted-average remaining lease terms (years):
Operating leases	10.2		11.1
Finance leases	22.0		18.7

Weighted-average discount rates:
Operating leases	4.5%		4.6%
Finance leases	3.9%		3.3%

Future lease payments as of December 31, 2025 are as follows:


	Operating			Finance
(in millions)	Leases			Leases
2026	$	80		$	28
2027		69			27
2028		58			29
2029		44			25
2030		36			25
Thereafter		208			345
Total lease payments		495			479
Less: imputed interest		(103	)		(165	)
Present value of lease payments		392			314
Less: leases classified as held for sale		(10	)		(12	)
Less: current lease obligations		(62	)		(15	)
Total long-term lease obligations	$	320		$	287

Retirement and Other Benefit Plans - Change in Projected Benefit Obligation (Detail) - Pension - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Net projected benefit obligation at beginning of year	$ 967	$ 970
Service cost	36	38	$ 33
Interest cost	58	55	51
Actuarial loss (gain)	7	(46)
Gross benefits paid	(60)	(50)
Net projected benefit obligation at end of year	$ 1,008	$ 967	$ 970

- Definition

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

+ References

+ Details

Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restricted Cash and Cash Equivalent [Abstract]
Cash and cash equivalents	$ 67	$ 670	$ 1,272
Restricted cash	0	0	10
Total cash, cash equivalents and restricted cash presented in the consolidated statements of cash flows	$ 67	$ 670	$ 1,282	$ 359

Retirement and Other Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2025

Fair Values of Pension Plan Assets by Asset Class and Fair Value Hierarchy Level

The fair values of pension plan assets by asset class and fair value hierarchy level are as follows:


	Fair Value Measurements
December 31		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Net Asset Value		Total Fair Value
(in millions)		2025
Equity securities1:
Mid-sized to large cap		$	—	$	—	$	—	$	391	$	391
Small cap, international and emerging growth funds			—		—		—		425		425
Debt securities1:
Core fixed income			—		—		—		334		334
Real estate			—		—		—		134		134
Private infrastructure			—		—		—		100		100
Cash equivalents			—		—		—		8		8
Total		$	—	$	—	$	—	$	1,392	$	1,392

		2024
Equity securities1:
Mid-sized to large cap		$	—	$	—	$	—	$	359	$	359
Small cap, international and emerging growth funds			—		—		—		361		361
Debt securities1:
Core fixed income			—		—		—		271		271
Real estate			—		—		—		130		130
Private infrastructure			—		—		—		96		96
Cash equivalents			—		—		—		21		21
Total		$	—	$	—	$	—	$	1,238	$	1,238

Pension

Schedule of Components of Net Periodic Benefit Cost

The net periodic benefit cost of defined benefit plans includes the following components:


years ended December 31 (in millions)	2025			2024			2023
Service cost	$	36		$	38		$	33
Interest cost		58			55			51
Expected return on assets		(83	)		(79	)		(71	)
Amortization of:
Prior service cost		6			6			6
Actuarial loss		2			2			1
Settlement charge		5			—			—
Net periodic benefit cost	$	24		$	22		$	20

Schedule of Recognized Pretax Amounts in Comprehensive Earnings

The Company recognized the following pretax amounts in consolidated comprehensive earnings:


years ended December 31
(in millions)	2025			2024			2023
Actuarial (gain) loss	$	(83	)	$	(44	)	$	21
Amortization of:
Prior service cost		(6	)		(6	)		(6	)
Actuarial loss		(2	)		(2	)		(1	)
Settlement charge		(5	)		—			—
Total	$	(96	)	$	(52	)	$	14

Schedule of Net Periodic Benefit Credit or Cost Not Yet Recognized

Accumulated other comprehensive (earnings) loss includes the following amounts that have not yet been recognized in net periodic benefit cost:


December 31	2025						2024
(in millions)	Gross			Net of tax			Gross		Net of tax
Prior service cost	$	31		$	44		$	37	$	7
Actuarial (gain) loss		(72	)		(102	)		17		3
Total	$	(41	)	$	(58	)	$	54	$	10

Schedule of Change in Projected Benefit Obligation

The defined benefit plans’ change in projected benefit obligation is as follows:


years ended December 31
(in millions)	2025			2024
Net projected benefit obligation at beginning of year	$	967		$	970
Service cost		36			38
Interest cost		58			55
Actuarial loss (gain)		7			(46	)
Gross benefits paid		(60	)		(50	)
Net projected benefit obligation at end of year	$	1,008		$	967

Schedule of Change In Plan Assets

The Company’s change in plan assets, funded status and amounts recognized on the Company’s consolidated balance sheets are as follows:


years ended December 31
(in millions)	2025			2024
Fair value of plan assets at beginning of year	$	1,238		$	1,177
Actual return on plan assets, net		172			77
Employer contributions		42			34
Gross benefits paid		(60	)		(50	)
Fair value of plan assets at end of year	$	1,392		$	1,238

Schedule of Funded Status


December 31
(in millions)	2025		2024
Funded status of the plan at end of year	$	384	$	271
Accrued benefit credit	$	384	$	271

Schedule of Amounts Recognized on Consolidated Balance Sheets


December 31
(in millions)	2025			2024
Amounts recognized on consolidated balance sheets consist of:
Noncurrent asset	$	487		$	371
Current liability		(17	)		(13	)
Noncurrent liability		(86	)		(87	)
Net amount recognized at end of year	$	384		$	271

Schedule of Accumulated Benefit Obligations in Excess of Plan Assets

Benefit obligations and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets are as follows:


December 31
(in millions)	2025		2024
Projected benefit obligation	$	103	$	100
Accumulated benefit obligation	$	95	$	90
Fair value of plan assets	$	—	$	—

Schedule of Weighted-Average Assumptions

Weighted-average assumptions used to determine benefit obligations as of December 31 are:


	2025	2024
Discount rate	5.97%	6.00%
Rate of increase in future compensation levels	4.50%	4.50%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31 are:


	2025	2024	2023
Discount rate	6.00%	5.58%	5.88%
Rate of increase in future compensation levels	4.50%	4.50%	4.50%
Expected long-term rate of return on assets	6.75%	6.75%	6.75%

Schedule of Target Assets Allocation

The target allocation for 2025 and the actual pension plan asset allocation by asset class are as follows:


	Percentage of Plan Assets
		2025
		Target	December 31
Asset Class		Allocation	2025	2024
Equity securities		56%	58%	58%
Debt securities		28%	24%	22%
Real estate		10%	10%	10%
Private infrastructure		6%	7%	8%
Cash		0%	1%	2%
Total		100%	100%	100%

Schedule of Expected Benefit Payments

The expected benefit payments to be paid from plan assets for each of the next five years and the five-year period thereafter are as follows:


(in millions)
2026	$	71
2027	$	63
2028	$	63
2029	$	64
2030	$	66
Years 2031 - 2035	$	360

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Goodwill

The following table shows the changes in goodwill by reportable segment and in total:


December 31	East Group			West Group			Specialties		Total
(in millions)	2025
Balance at beginning of period	$	1,031		$	2,362		$	—	$	3,393
Acquisitions		5			—			209		214
Adjustments to purchase price allocations		(1	)		8			—		7
Balance at end of period	$	1,035		$	2,370		$	209	$	3,614

	2024
Balance at beginning of period	$	764		$	2,625		$	—	$	3,389
Acquisitions		267			111			—		378
Goodwill allocated to assets held for sale		—			(374	)		—		(374	)
Balance at end of period	$	1,031		$	2,362		$	—	$	3,393

Intangible Assets Subject to Amortization

Intangible assets subject to amortization consist of the following:


December 31	Gross Amount		Accumulated Amortization			Net Balance
(in millions)	2025
Noncompetition agreements	$	1	$	(1	)	$	—
Customer relationships		418		(99	)		319
Operating permits		110		(33	)		77
Use rights and other		29		(14	)		15
Trade names		10		(5	)		5
Total	$	568	$	(152	)	$	416

	2024
Noncompetition agreements	$	4	$	(4	)	$	—
Customer relationships		415		(79	)		336
Operating permits		110		(30	)		80
Use rights and other		29		(12	)		17
Trade names		10		(4	)		6
Total	$	568	$	(129	)	$	439

Intangible Assets Deemed to Indefinite Life that are Therefore Not Amortized

Intangible assets deemed to have an indefinite life that are therefore not amortized consist of the following:


December 31	Building Materials Business		Specialties		Total
(in millions)	2025
Operating permits	$	7	$	—	$	7
Use rights		29		—		29
Trade names		—		7		7
Total	$	36	$	7	$	43

	2024
Operating permits	$	7	$	—	$	7
Use rights		29		—		29
Trade names		—		2		2
Total	$	36	$	2	$	38

Summary of Intangible Assets Acquired

All intangible assets acquired during 2025 were from business combinations and are as follows:


(in millions, except year data)	Amount		Weighted-average amortization period
Subject to amortization:
Customer relationships	$	3	8 years
Total subject to amortization	$	3	8 years
Not subject to amortization:
Trade names		5	N/A
Total	$	8

Estimated Amortization Expense of Intangible Assets

The estimated amortization expense for intangible assets for each of the next five years and thereafter is as follows:


(in millions)
2026	$	25
2027		25
2028		25
2029		24
2030		23
Thereafter		294
Total	$	416

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-2

+ Details

Retirement and Other Benefit Plans - Schedule of Fair Values of Pension Plan Assets by Asset Class and Fair Value Hierarchy Level (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	$ 1,392	$ 1,238
Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	1,392	1,238
Mid-sized to Large Cap
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	391	359
Mid-sized to Large Cap \| Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	391	359
Small Cap, International and Emerging Growth Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	425	361
Small Cap, International and Emerging Growth Funds \| Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	425	361
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	334	271
Debt Securities \| Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	334	271
Real Estate
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	134	130
Real Estate \| Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	134	130
Private infrastructure
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	100	96
Private infrastructure \| Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	100	96
Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	8	21
Cash Equivalents \| Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Cash Equivalents \| Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	$ 8	$ 21

Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) Facility Segment State	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Significant Accounting Policies [Line Items]
Number of quarries and yards \| Facility	400
Number of states in which entity operates \| State	28
Reportable business segments \| Segment	2
Restricted cash	$ 0	$ 0	$ 10
Number of days restricted from utilizing cash	180 days
Retirement plans and postretirement benefits amortized amount representing percentage of greater of projected benefit obligation or pension plan assets.	10.00%
Minimum likelihood for recognition of tax benefit related to uncertain tax position	50.00%
Percentage of minimum amount of income tax payments net of refunds received			5.00%
Goodwill acquired	$ 3,614	3,393	$ 3,389
Depletion expense	$ 103	$ 78	$ 53
Inventory Finished Goods \| Minimum
Significant Accounting Policies [Line Items]
Allowance for inventories in excess of sales requisite record period	1 year
Inventory Finished Goods \| Weighted Average
Significant Accounting Policies [Line Items]
Allowance for inventories in excess of sales requisite record period	2 years
Expendable Parts Inventory
Significant Accounting Policies [Line Items]
Allowance for inventories in excess of sales requisite record period	5 years
Percentage of Aggregate Business Net Sales in Top Ten Sales states \| Geographic Concentration Risk \| Sales Revenue Segment
Significant Accounting Policies [Line Items]
Total net sales, percentage	76.00%

Shareholders' Equity

12 Months Ended

Dec. 31, 2025

Equity [Abstract]

Shareholders' Equity

Note M: Shareholders’ Equity

The authorized capital structure of the Company includes 100 million shares of common stock, with a par value of $0.01 per share. At December 31, 2025, approximately 0.9 million common shares were reserved for issuance under stock-based award plans.

Pursuant to authority granted by its Board of Directors, the Company can repurchase up to 20 million shares of common stock. During 2025, 2024 and 2023, the Company repurchased 0.9 million, 0.8 million and 0.4 million shares of common stock, respectively. Future share repurchases are at the discretion of management. At December 31, 2025, 11.0 million shares of common stock were remaining under the Company’s repurchase authorization.

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478448/946-505-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-6

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
-Paragraph 13
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-16

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
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-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

+ Details

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Line Items]
Foreign pretax earnings (loss)	$ 19	$ 13	$ 8
Operating loss carryforwards, expiration year	2045
Deferred tax assets recognized	$ 3	2
Domestic tax credits, expiration year	2045
Open tax years	2021 2022 2023 2024 2025
RETC Projects
Income Taxes [Line Items]
Investment proportional amortization, income tax expense	$ 128	$ 148	$ 26
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Cash Flows [Extensible Enumeration]	Income Tax Expense (Benefit)	Income Tax Expense (Benefit)	Income Tax Expense (Benefit)
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration]	Income Tax Expense (Benefit)	Income Tax Expense (Benefit)	Income Tax Expense (Benefit)
Investment proportional amortization, income recapture expense	$ 5	$ 16	$ 1
Investment program, proportional amortization method, income tax credit	125	153	24
Investment program, proportional amortization method, other income tax benefit	15	17	$ 2
Investment program, commitment amount	51	44
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carryforwards, amount	$ 42	$ 24

Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2025

Supplemental Cash Flow Elements [Abstract]

Schedule of Noncash Investing and Financing Activities

Noncash investing and financing activities are as follows:


years ended December 31
(in millions)	2025			2024		2023
Accrued liabilities for purchases of property, plant and equipment	$	140		$	143	$	128
Right-of-use assets obtained in exchange for new operating lease liabilities	$	75		$	68	$	63
Right-of-use assets obtained in exchange for new finance lease liabilities	$	67		$	17	$	22
Remeasurement of finance lease right-of-use assets	$	50		$	27	$	—
Remeasurement of operating lease right-of-use assets	$	(1	)	$	7	$	10
Acquisition of assets through asset exchange	$	—		$	—	$	5

Supplemental Disclosures of Cash Flow Information

Supplemental disclosures of cash flow information are as follows:


years ended December 31
(in millions)	2025		2024		2023
Cash paid for interest, net of amount capitalized	$	229	$	158	$	159
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$	82	$	77	$	77
Operating cash flows used for finance leases	$	10	$	6	$	5
Financing cash flows used for finance leases	$	23	$	20	$	17

Income Taxes - Components of Income Tax Expense From Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Federal income taxes:
Current	$ 138	$ 539	$ 209
Deferred	56	(60)	(9)
Total federal income taxes	194	479	200
State income taxes:
Current	31	77	37
Deferred	8	(6)	(3)
Total state income taxes	39	71	34
Foreign income taxes:
Current	2	0	0
Deferred	1	0	0
Total current foreign income taxes	3	0	0
Income tax expense	$ 236	$ 550	$ 234

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Commitments And Contingencies [Line Items]
Purchase commitments for property, plant and equipment	$ 273
Asset retirement obligation depreciation and accretion	20	$ 27	$ 16
Liability reserve for insurance claims	56	53
Outstanding letters of credit	34
Capital expenditures	$ 150	139	$ 111
Percentage of employees represented in labor union	13.00%
Woodville
Commitments And Contingencies [Line Items]
Collective bargaining agreement expiration month year	2026-06
Gabbs
Commitments And Contingencies [Line Items]
Collective bargaining agreement expiration month year	2028-06
Texas Cement Business
Commitments And Contingencies [Line Items]
Purchase commitments for property, plant and equipment	$ 14
Specialties
Commitments And Contingencies [Line Items]
Percentage of employees represented in labor union	59.00%
Collective bargaining agreement expiration month year	2027-08
Surety Bonds
Commitments And Contingencies [Line Items]
Surety bonds	$ 850
Revolving Facility
Commitments And Contingencies [Line Items]
Outstanding letters of credit	3	$ 3
Capital Addition Purchase Commitments
Commitments And Contingencies [Line Items]
Purchase commitments for property, plant and equipment	119
Energy And Service Contracts
Commitments And Contingencies [Line Items]
Purchase commitments for property, plant and equipment	$ 154

Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 46	$ 58	$ 50
Unrecognized compensation cost	29
Service and Performance Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	45	56	49
Unrecognized compensation cost	$ 28
Weighted-average period over which unrecognized compensation cost will be recognized	2 years 1 month 6 days
Incentive Compensation Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 1	1	1
Unrecognized compensation cost	$ 1
Weighted-average period over which unrecognized compensation cost will be recognized	1 year 7 months 6 days
Directors' Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 0	$ 1	$ 0
Unrecognized compensation cost	$ 0

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(v)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
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-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Subparagraph (f)(2)(iii)
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Section 35
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Revenues and Gross Profit

12 Months Ended

Dec. 31, 2025

Revenues And Gross Profit [Abstract]

Revenues and Gross Profit

Note P: Revenues and Gross Profit


years ended December 31 (in millions) Revenues	2025			2024			2023
Building Materials business:
Aggregates	$	5,004		$	4,514		$	4,302
Other Building Materials		992			1,078			1,479
Less: interproduct revenues		(287	)		(250	)		(245	)
Total Building Materials business		5,709			5,342			5,536
Specialties		441			320			315
Total	$	6,150		$	5,662		$	5,851

years ended December 31 (in millions) Gross profit (loss)	2025			2024			2023
Building Materials business:
Aggregates	$	1,677		$	1,449		$	1,378
Other Building Materials		98			119			267
Total Building Materials business		1,775			1,568			1,645
Specialties		137			107			97
Corporate		(23	)		(39	)		3
Total	$	1,889		$	1,636		$	1,745

Effective September 30, 2025, the Company combined the cement and ready mixed concrete and the asphalt and paving services product lines (hereinafter, other building materials). This change was driven by the reduced significance of each of these product lines relative to revenues from continuing operations and earnings from continuing operations as a result of the pending divestiture of the Company's Midlothian cement plant, related cement terminals and Texas ready mixed concrete plants (see Note B) and associated reclassification of these revenues and earnings to discontinued operations for all periods presented.

The above information for 2024 and 2023 has been reclassified to conform to current-year presentation. For the year ended December 31, 2024, the cement and ready mixed concrete product line reported revenues of $1.1 billion and gross profit of $260 million (of which, $874 million and $242 million, respectively, are classified as discontinued operations) and the asphalt and paving services product line reported revenues of $869 million and gross profit of $101 million. For the year ended December 31, 2023, the cement and ready mixed concrete product line reported revenues of $1.5 billion and gross profit of $436 million (of which, $1.0 billion and $276 million, respectively, are classified as discontinued operations) and the asphalt and paving services product line reported revenues of $887 million and gross profit of $109 million.

Domestic and foreign revenues are as follows:


years ended December 31 (in millions)	2025		2024		2023
Domestic	$	6,092	$	5,613	$	5,781
Foreign		58		49		70
Total	$	6,150	$	5,662	$	5,851

Performance Obligations. Performance obligations are contractual promises to transfer or provide a distinct good or service for a stated price. The Company’s product sales agreements are single-performance obligations that are satisfied at a point in time, and customer payment terms are generally 30 days from the invoice date. Performance obligations within paving service agreements are satisfied over time, primarily ranging from one day to two years. Customer payments for the paving operations are based on a contractual billing schedule and are typically "paid-when-paid", meaning the Company is paid once the customer is paid.

Future revenues from unsatisfied performance obligations at December 31, 2025, 2024 and 2023 were $162 million, $255 million and $251 million, respectively, where the remaining periods to complete these obligations ranged from one month to 24 months at December 31, 2025, one month to 36 months at December 31, 2024 and one month to 22 months at December 31, 2023.

Service Revenues. Service revenues were $356 million, $411 million and $411 million for the years ended December 31, 2025, 2024 and 2023, respectively, and are reported in the West Group.

Goodwill and Other Intangible Assets - Changes in Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Line Items]
Balance at beginning of period	$ 3,393	$ 3,389
Acquisitions	214	378
Adjustments to purchase price allocations	7
Goodwill allocated to assets held for sale	(374)	(374)
Balance at end of period	3,614	3,393
East Group
Goodwill [Line Items]
Balance at beginning of period	1,031	764
Acquisitions	5	267
Adjustments to purchase price allocations	(1)
Goodwill allocated to assets held for sale		0
Balance at end of period	1,035	1,031
West Group
Goodwill [Line Items]
Balance at beginning of period	2,362	2,625
Acquisitions	0	111
Adjustments to purchase price allocations	8
Goodwill allocated to assets held for sale		(374)
Balance at end of period	2,370	2,362
Specialties
Goodwill [Line Items]
Balance at beginning of period	0	0
Acquisitions	209	0
Adjustments to purchase price allocations	0
Goodwill allocated to assets held for sale		0
Balance at end of period	$ 209	$ 0

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

Retirement and Other Benefit Plans - Net Periodic Benefit Cost Recognized Pretax Amounts in Comprehensive Earnings (Detail) - Pension - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Actuarial (gain) loss	$ (83)	$ (44)	$ 21
Prior service cost	(6)	(6)	(6)
Actuarial loss	(2)	(2)	(1)
Settlement charge	(5)	0	0
Total	$ (96)	$ (52)	$ 14

- Definition

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

+ References

+ Details

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets related to:
Inventories	$ 163	$ 147
Valuation and other reserves	65	65
Net operating loss carryforwards	3	2
Accumulated other comprehensive loss	18	41	$ 54
Lease liabilities	171	147
Other items, net	2	13
Gross deferred tax assets	422	415
Valuation allowance on deferred tax assets	(1)	(2)
Total net deferred tax assets	421	413
Deferred tax liabilities related to:
Property, plant and equipment	(1,203)	(1,158)
Goodwill and other intangibles	(212)	(171)
Right-of-use assets	(167)	(144)
Partnerships and joint ventures	(51)	(47)
Employee benefits	(54)	(62)
Total deferred tax liabilities	(1,687)	(1,582)
Deferred income taxes, net	$ (1,266)	$ (1,169)

Retirement and Other Benefit Plans - Schedule of Change In Plan Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Balance at beginning of year	$ 1,238
Employer contributions	42	$ 34
Balance at end of year	1,392	1,238
Pension
Defined Benefit Plan Disclosure [Line Items]
Balance at beginning of year	1,238	1,177
Actual return on plan assets, net	172	77
Employer contributions	42	34
Gross benefits paid	(60)	(50)
Balance at end of year	$ 1,392	$ 1,238

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

+ Details

- Definition

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

+ References

+ Details

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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+ Details

Quarterly Information (Unaudited)

12 Months Ended

Dec. 31, 2025

Quarterly Financial Information Disclosure [Abstract]

Quarterly Information (Unaudited)

Note T: Quarterly Information (Unaudited)

In connection with the pending QUIKRETE transaction, the associated financial results of the Company's Midlothian cement plant, related cement distribution terminals and Texas ready mixed concrete assets are reported as discontinued operations on its consolidated statements of earnings for all periods presented (see Note B). The following table provides unaudited summarized quarterly financial information on this basis to allow for a meaningful comparison of continuing operations.


(in millions)	Revenues				Gross Profit				Earnings from Continuing Operations				Consolidated Net Earnings				Net Earnings Attributable to Martin Marietta
Quarter	2025		2024		2025		2024		2025		2024		2025		2024		2025		2024
First	$	1,161	$	1,056	$	314	$	250	$	104	$	1,030	$	116	$	1,045	$	116	$	1,045
Second		1,609		1,552		496		449		292		241		328		294		328		293
Third		1,846		1,642		611		513		361		297		414		363		414		363
Fourth		1,534		1,412		468		424		233		248		279		294		279		294
Total	$	6,150	$	5,662	$	1,889	$	1,636	$	990	$	1,816	$	1,137	$	1,996	$	1,137	$	1,995

Commitments and Contingencies

12 Months Ended

Dec. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note N: Commitments and Contingencies

Legal and Administrative Proceedings. The Company is engaged in certain legal and administrative proceedings incidental to its normal business activities. In the opinion of management and counsel, based upon currently available facts, the likelihood is remote that the ultimate outcome of any litigation and other proceedings, including those pertaining to environmental matters (see Note A), relating to the Company and its subsidiaries, will have a material adverse effect on the overall results of the Company’s operations, its cash flows or its financial position.

Asset Retirement Obligations. The Company incurs reclamation and teardown costs as part of its mining and production processes. Estimated future obligations are discounted to their present value and accreted to their projected future obligations via charges to operating expenses. Additionally, the fixed assets recorded concurrently with the liabilities are depreciated over the period until retirement activities are expected to occur. Total accretion and depreciation expenses for 2025, 2024 and 2023 were $20 million, $27 million and $16 million, respectively, and are included in Other operating income, net, in the consolidated statements of earnings.

The following shows the changes in asset retirement obligations:


years ended December 31 (in millions)	2025			2024			2023
Balance at beginning of year	$	429		$	397		$	380
Accretion expense		11			11			11
Liabilities incurred and liabilities assumed in business combinations		2			12			34
Liabilities settled		(8	)		(2	)		(28	)
Revisions in estimated cash flows		(81	)		9			(13	)
Liabilities reclassified from assets held for sale		—			2			13
Balance at end of year	$	353		$	429		$	397

Other Environmental Matters. The Company’s operations are subject to and affected by federal, state and local laws and regulations relating to the environment, health and safety, and other regulatory matters. Certain of the Company’s operations may, from time to time, involve the use of substances that are classified as toxic or hazardous within the meaning of these laws and regulations. Environmental operating permits are, or may be, required for certain of the Company’s operations, and such permits are subject to modification, renewal and revocation. The Company regularly monitors and reviews its operations, procedures and policies for compliance with these laws and regulations. Despite these compliance efforts, risk of environmental remediation liability is inherent in the operation of the Company’s businesses, as it is with other companies engaged in similar businesses. The Company has no material provisions for environmental remediation liabilities and does not believe such liabilities will have a material adverse effect on the Company in the future.

Insurance Accruals. At December 31, 2025 and 2024, accruals of $56 million and $53 million, respectively, were recorded for insurance claims.

Letters of Credit. In the normal course of business, the Company provides certain third parties with standby letter of credit agreements guaranteeing its payment for certain insurance claims, contract performance and permit requirements. At December 31, 2025, the Company was contingently liable for $34 million in letters of credit.

Surety Bonds. At December 31, 2025, the Company was contingently liable for $850 million in surety bonds required by certain governments and their related agencies. The bonds are provided in the normal course of business and are principally for certain insurance claims, construction contracts, reclamation obligations and mining permits guaranteeing the Company’s own performance. The Company has indemnified the underwriting insurance company against any exposure under the surety bonds. In the Company’s past experience, no material claims have been made against these financial instruments.

Purchase Commitments. The Company had purchase commitments for property, plant and equipment of $119 million as of December 31, 2025. The Company also had other purchase obligations related to energy and service contracts of $154 million as of December 31, 2025. The Company’s contractual purchase commitments as of December 31, 2025 are as follows:


(in millions)
2026	$	174
2027		31
2028		13
2029		11
2030		12
Thereafter		32
Total	$	273

Of the total contractual purchase commitments, $14 million was for the Company's Texas cement business and related ready mixed concrete operations that are classified as assets held for sale as of December 31, 2025.

Capital expenditures in 2025, 2024 and 2023 that were purchase commitments as of the prior year end were $150 million, $139 million and $111 million, respectively.

Contracts of Affreightment and Royalty Commitments. Future minimum contracts of affreightment and royalty commitments for all noncancelable agreements that are not accounted for as leases on the Company’s consolidated balance sheet as of December 31, 2025 are as follows:


(in millions)	Contracts of Affreightment		Royalty Commitments
2026	$	17	$	30
2027		18		17
2028		—		16
2029		—		13
2030		—		12
Thereafter		—		81
Total	$	35	$	169

Employees. As of December 31, 2025, approximately 13% of the Company’s employees are represented by a labor union. All such employees are hourly employees. The Company maintains collective bargaining agreements relating to the union employees within

the Building Materials business and Specialties segment. Within the Specialties segment, 59% of hourly employees are represented by labor unions. The Company’s principal union contracts for the Specialties segment cover employees at the Manistee, Michigan, magnesia-based chemicals plant, the Woodville, Ohio, lime plant and the Gabbs, Nevada, magnesia mine and processing plant. The Woodville, Manistee and Gabbs collective bargaining agreements expire in June 2026, August 2027 and June 2028, respectively.

Income Taxes

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Income Taxes

Note I: Income Taxes

The components of the Company’s income tax expense from continuing operations are as follows:


years ended December 31 (in millions)	2025		2024			2023
Federal income taxes:
Current	$	138	$	539		$	209
Deferred		56		(60	)		(9	)
Total federal income taxes		194		479			200
State income taxes:
Current		31		77			37
Deferred		8		(6	)		(3	)
Total state income taxes		39		71			34
Foreign income taxes:
Current		2		—			—
Deferred		1		—			—
Total current foreign income taxes		3		—			—
Income tax expense	$	236	$	550		$	234

The domestic and foreign components of pretax earnings from continuing operations for the years ended December 31, 2025, 2024 and 2023 are as follows:


years ended December 31 (in millions)	2025		2024		2023
Domestic	$	1,207	$	2,353	$	1,218
Foreign		19		13		8
Earnings from continuing operations before income tax expense	$	1,226	$	2,366	$	1,226

The Company’s effective income tax rate on continuing operations varied from the statutory United States income tax rate due to the following tax differences:


years ended December 31	2025						2024						2023
(in millions, except percentages)	Amount			Percent			Amount			Percent			Amount			Percent
U.S. federal statutory tax rate	$	258			21.0	%	$	497			21.0	%	$	257			21.0	%
State and local income taxes, net of federal income tax effect (a)		30			2.4			57			2.4			27			2.2
Foreign tax effects		(1	)		(0.1	)		(2	)		(0.1	)		(5	)		(0.4	)
Tax credits:
Railroad maintenance credits		(13	)		(1.0	)		(10	)		(0.4	)		(9	)		(0.7	)
Other		(6	)		(0.5	)		(10	)		(0.4	)		(6	)		(0.5	)
Nontaxable or nondeductible items:
Goodwill write-off for divestiture		—			—			48			2.0			—			—
Other		6			0.5			5			0.2			2			0.2
Other adjustments:
Effects of statutory depletion		(38	)		(3.1	)		(35	)		(1.5	)		(32	)		(2.7	)
Effective income tax rate	$	236			19.2	%	$	550			23.2	%	$	234			19.1	%

The effect of changes in tax laws or rates enacted in the current period and changes in valuation allowances are immaterial.

The higher 2024 effective income tax rate versus 2025 and 2023 was driven by the impact of the February 2024 divestiture of the South Texas cement business and certain related ready mixed concrete operations, which included the write-off of certain nondeductible goodwill.

The statutory depletion deduction for all years is calculated as a percentage of revenues, subject to certain limitations. Due to these limitations, changes in the sales volumes and pretax earnings may not proportionately affect the Company’s statutory depletion deduction and the corresponding impact on the effective income tax rate.

The Company invests in renewable energy investment entities which qualify for tax credits and other tax benefits and are accounted for under the proportional amortization method. For the year ended December 31, 2025, amortization of these investments plus income recapture, which are included in the line item Income tax expense in the consolidated statements of earnings, were $128 million and $5 million, respectively, and offset by $125 million of tax credits and $15 million of other tax benefits. For the year ended December 31, 2024, amortization plus income recapture of similar investments were $148 million and $16 million, respectively, offset by $153 million of tax credits and $17 million of other tax benefits. For the year ended December 31, 2023, amortization plus income recapture of similar investments were $26 million and $1 million, respectively, offset by $24 million of tax credits and $2 million of other tax benefits. As of December 31, 2025, the Company has committed to additional equity contributions of $51 million for tax equity investments related to RETC projects, which are expected to be paid in 2026. As of December 31, 2024, the Company had committed to additional equity contributions of $44 million for tax equity investments related to RETC projects, which were paid in 2025. Unfunded commitments as of December 31, 2025 and 2024 are recorded in the line item Unpaid commitments to limited liability companies on the consolidated balance sheets.

The amounts of income taxes paid (refunded) by the Company are as follows:


years ended December 31 (in millions)	2025		2024			2023
Federal	$	141	$	319		$	249
State:
Texas		14	*			*
Other		37		64			41
Foreign		—		(1	)		2
Income taxes paid, net of amounts refunded	$	192	$	382		$	292

* Jurisdiction below the threshold for the period presented.

The Internal Revenue Service provided certain disaster tax relief for North Carolina businesses affected by Hurricanes Debby and Helene, which allowed the Company to defer estimated federal and certain state income, payroll and excise tax payments for the period from August 2024 through September 2025. The deferred obligation was paid on September 25, 2025.

On July 4, 2025, President Trump signed the One Big Beautiful Bill Act (OBBBA) that, among other provisions, makes 100% bonus depreciation permanent, restores the ability to expense domestic research expenditures, and modifies the taxation of foreign earnings. The OBBBA is not expected to have a material impact on the Company's annual estimated income tax rate, but results in a reclassification between current taxes payable and deferred tax liabilities which is reflected in the year ended December 31, 2025.

The principal components of the Company’s deferred tax assets and liabilities are as follows:


December 31	Deferred Assets (Liabilities)
(in millions)	2025			2024
Deferred tax assets related to:
Inventories	$	163		$	147
Valuation and other reserves		65			65
Net operating loss carryforwards		3			2
Accumulated other comprehensive loss		18			41
Lease liabilities		171			147
Other items, net		2			13
Gross deferred tax assets		422			415
Valuation allowance on deferred tax assets		(1	)		(2	)
Total net deferred tax assets		421			413
Deferred tax liabilities related to:
Property, plant and equipment		(1,203	)		(1,158	)
Goodwill and other intangibles		(212	)		(171	)
Right-of-use assets		(167	)		(144	)
Partnerships and joint ventures		(51	)		(47	)
Employee benefits		(54	)		(62	)
Total deferred tax liabilities		(1,687	)		(1,582	)
Deferred income taxes, net	$	(1,266	)	$	(1,169	)

The Company had immaterial gross domestic federal net operating loss (NOL) carryforwards at both December 31, 2025 and 2024. The Company had gross domestic state NOL carryforwards of $42 million and $24 million at December 31, 2025 and 2024, respectively. The domestic federal and state carryforwards have various expiration dates through 2045. The Company also had immaterial domestic state tax credit carryforwards at December 31, 2025 and 2024, which have various expiration dates through 2045.

The Company expects to reinvest the earnings from its wholly-owned Canadian and Bahamian subsidiaries indefinitely, and accordingly, has not provided deferred taxes on the subsidiaries’ undistributed net earnings or basis differences. The Company believes that the tax liability that would be incurred upon repatriation of the foreign earnings was immaterial at December 31, 2025 and 2024.

The Company’s unrecognized tax benefits are immaterial for the years ended December 31, 2025, 2024 and 2023. Unrecognized tax benefits are reversed as a discrete event if an examination of applicable tax returns is not initiated by a federal or state tax authority within the statute of limitations or upon effective settlement with federal or state tax authorities. Management believes its accrual for unrecognized tax benefits is sufficient to cover uncertain tax positions reviewed during audits by taxing authorities.

The Company’s tax years subject to federal, state or foreign examinations are 2021 through 2025.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478822/944-740-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			300 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of incentive compensation to acquire shares, maximum	50.00%
Percentage of discount rate to market value on the incentive compensation	20.00%
Awards available for grant	300,000			300,000
Total tax benefits related to stock-based compensation expense	$ 8	$ 9	$ 9
Options granted in 2015 and 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options expiration date	10 years
Incentive Compensation Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of stock awards, granted	$ 489.84	$ 548.68	$ 362.08
Aggregate intrinsic values for stock awards	$ 4			$ 4
Common stock price	$ 622.66			$ 622.66
Aggregate intrinsic values of stock awards, distributed	$ 1	$ 4	$ 4
Awards granted	8,234
Restricted Stock - Service Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of stock awards, granted	$ 510.86	$ 553.17	$ 369.18
Awards granted	55,701
Restricted Stock - Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of stock awards, granted	$ 503.38	$ 595	$ 392.73
Awards granted	32,254
Service and Performance Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic values for stock awards	$ 157			$ 157
Aggregate intrinsic values of stock awards, distributed	$ 74	$ 76	$ 48
Shareholder Value Achievement Plan (1996)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	200,000			200,000
Awards granted				0
Directors' Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	300,000			300,000
Common stock issued under the plan	826	834	1,333

Income Taxes - Summary of Effective Income Tax Rate On Continuing Operations (Detail) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2025

Dec. 31, 2024

Dec. 31, 2023

Effective income tax rate on continuing operations, amount

U.S. federal statutory tax rate, amount

$ 258

$ 497

$ 257

State and local income taxes, net of federal income tax effect, amount

^[1]

Foreign tax effects, amount

(1)

(2)

(5)

Tax credits:

Railroad maintenance credits, amount

(13)

(10)

(9)

Other, amount

(6)

(10)

(6)

Nontaxable or nondeductible items:

Goodwill write-off for divestiture, amount

Other, amount

Other adjustments:

Effects of statutory depletion, amount

(38)

(35)

(32)

Income tax expense

$ 236

$ 550

$ 234

Effective income tax rate on continuing operations, percent

U.S. federal statutory tax rate

21.00%

State and local income taxes, net of federal income tax effect

^[1]

2.40%

2.20%

Foreign tax effects

(0.10%)

(0.40%)

Tax credits:

Railroad maintenance credits

(1.00%)

(0.40%)

(0.70%)

Other

(0.50%)

(0.40%)

(0.50%)

Nontaxable or nondeductible items:

Goodwill write-off for divestiture

0.00%

2.00%

0.00%

Other

0.50%

0.20%

Other adjustments:

Effects of statutory depletion

(3.10%)

(1.50%)

(2.70%)

Effective income tax rate

19.20%

23.20%

19.10%

[1]

State taxes in California, Minnesota, Colorado, Texas, Georgia, and Florida made up the majority (greater than 50 percent) of the tax effect in this category in 2025; state taxes in California, Texas, and Colorado made up the majority of the tax effect in this category in 2024; and state taxes in Texas, California, Colorado, and Minnesota made up the majority of the tax effect in this category in 2023.

Retirement and Other Benefit Plans - Schedule of Accumulated Benefit Obligations in Excess of Plan Assets (Detail) - Pension - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 103	$ 100
Accumulated benefit obligation	95	90
Fair value of plan assets	$ 0	$ 0

- Definition

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

+ References

+ Details

Income Taxes - Summary of the Amounts of Income Taxes Paid (Refunded) by the Company (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Paid, by Individual Jurisdiction [Line Items]
Federal	$ 141	$ 319	$ 249
Foreign	0	(1)	2
Income taxes paid, net of amounts refunded	192	382	292
Texas
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	14
Other
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	$ 37	$ 64	$ 41

Stock-Based Compensation

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

Note K: Stock-Based Compensation

On May 19, 2016, the Company’s shareholders approved the Martin Marietta Amended and Restated Stock-Based Award Plan. The Martin Marietta Materials, Inc. Stock-Based Award Plan, as amended from time to time, along with the Amended Omnibus Securities Award Plan, originally approved in 1994 (collectively, the Plans), are still effective for awards made prior to 2017. The Company has been authorized by the Board of Directors to repurchase shares of the Company’s common stock for issuance under the stock-based award plans (see Note M).

The Company grants restricted stock awards under the Plans to a group of executive officers, key personnel and nonemployee members of the Board of Directors. The vesting of certain restricted stock awards is based on certain performance criteria over a specified period of time. The number of shares may be increased to the maximum or reduced to the minimum threshold based on the results of those criteria. In addition, certain awards are granted to individuals to encourage retention and motivate key employees. These awards generally vest if the employee is continuously employed over a specified period of time and require no payment from the employee. Awards granted to nonemployee members of the Board of Directors vest immediately.

The fair value of stock-based award grants is expensed over the vesting period. Awards to employees eligible for retirement prior to the award becoming fully vested are expensed over the period through the date that the employee first becomes eligible to retire and is no longer required to provide service to earn the award. Awards granted to nonemployee members of the Board of Directors are expensed immediately.

Additionally, an incentive compensation stock plan has been adopted under the Plans whereby certain participants may elect to use up to 50% of their annual incentive compensation to acquire units representing shares of the Company’s common stock at a 20% discount to the market value on the date of the incentive compensation award. Participants receive unrestricted shares of common stock in an amount equal to their respective units generally at the end of a 34-month period of additional employment from the date of award or at retirement beginning at age 62. All rights of ownership of the common stock convey to the participants upon the issuance of their respective shares at the end of the ownership-vesting period.

In 2026, the Company intends to submit to shareholders for approval a further Amended and Restated Stock-Based Award Plan. If approved, this updated plan will replace the existing stock-based award plans with respect to future grants while maintaining the validity of all outstanding awards previously issued under the current Plans.

The following table summarizes information for restricted stock awards and incentive compensation stock awards for 2025:


	Restricted Stock - Service Based					Restricted Stock - Performance Based					Incentive Compensation Stock
	Number of Awards			Weighted- Average Grant-Date Fair Value		Number of Awards			Weighted- Average Grant-Date Fair Value		Number of Awards			Weighted- Average Grant-Date Fair Value
January 1, 2025		191,534		$	370.27		88,504		$	468.71		15,543		$	497.76
Awarded		55,701		$	510.86		32,254		$	503.38		8,234		$	489.84
Distributed		(73,623	)	$	383.21		(66,977	)	$	417.26		(4,378	)	$	367.88
Forfeited		(6,752	)	$	470.05		(7,545	)	$	499.19		(377	)	$	517.31
Adjustment for performance		—		$	—		38,268		$	417.25		—		$	—
December 31, 2025		166,860		$	407.46		84,504		$	496.69		19,022		$	523.83

The weighted-average grant-date fair value per share of service-based restricted stock awards granted during 2025, 2024 and 2023 was $510.86, $553.17 and $369.18, respectively. The weighted-average grant-date fair value per share of performance-based restricted stock awards granted during 2025, 2024 and 2023 was $503.38, $595.00 and $392.73, respectively. The weighted-average grant-date fair value per share of incentive compensation stock awards granted during 2025, 2024 and 2023 was $489.84, $548.68 and $362.08, respectively.

The aggregate intrinsic values for unvested service-based and performance-based restricted stock awards of $157 million and unvested incentive compensation stock awards of $4 million at December 31, 2025 were based on the closing price of the Company’s common stock at December 31, 2025, which was $622.66. The aggregate intrinsic values of service-based and performance-based restricted stock awards distributed during the years ended December 31, 2025, 2024 and 2023 were $74 million, $76 million and $48 million, respectively. The aggregate intrinsic values of incentive compensation stock awards distributed during the years ended December 31, 2025, 2024 and 2023 were $1 million, $4 million and $4 million, respectively. The aggregate intrinsic values for distributed awards were based on the closing prices of the Company’s common stock on the dates of distribution.

Prior to 2016, under the Plans, the Company granted options to employees to purchase its common stock at a price equal to the closing market value at the date of grant. Options became exercisable in four annual installments beginning one year after date of grant. Outstanding options expired ten years after the grant date.

The following table includes summary information for stock options as of December 31, 2025:


	Number of Options			Weighted- Average Exercise Price
Outstanding at January 1, 2025		3,623		$	154.58
Exercised		(3,623	)	$	154.58
Outstanding at December 31, 2025		-		$	-

Exercisable at December 31, 2025		-		$	-

The aggregate intrinsic values of options exercised during each of the three years ended December 31, 2025, 2024 and 2023 were immaterial.

At December 31, 2025, there were approximately 0.3 million awards available for grant under the Plans.

In 1996, the Company adopted the Shareholder Value Achievement Plan to award shares of the Company’s common stock to key senior employees based on certain common stock performance criteria over a long-term period. As of December 31, 2025, 0.2 million shares of common stock remain reserved for issuance. No awards have been granted under this plan since 2000.

The Company adopted and the shareholders approved the Common Stock Purchase Plan for Directors in 1996, which provides nonemployee members of the Board of Directors the election to receive all or a portion of their total fees in the form of the Company’s common stock. Beginning in 2016, members of the Board of Directors were not required to defer any of their fees in the form of the Company’s common stock. Under the terms of this plan, 0.3 million shares of common stock were reserved for issuance. Nonemployee members of the Board of Directors elected to defer portions of their fees representing 826, 834 and 1,333 shares of the Company’s common stock under this plan during 2025, 2024 and 2023, respectively.

The following table summarizes stock-based compensation expense for the years ended December 31, 2025, 2024 and 2023, unrecognized compensation cost for nonvested awards at December 31, 2025 and the weighted-average period over which unrecognized compensation cost will be recognized:


(in millions, except year data)	Restricted Stock (Service- and Performance-Based)		Incentive Compensation Stock		Directors’ Fees Paid in Stock		Total
Stock-based compensation expense recognized for years ended December 31:
2025	$	45	$	1	$	—	$	46
2024	$	56	$	1	$	1	$	58
2023	$	49	$	1	$	—	$	50
Unrecognized compensation cost at December 31, 2025	$	28	$	1	$	—	$	29
Weighted-average period over which unrecognized compensation cost will be recognized	2.1 years		1.6 years

Total tax benefits related to stock-based compensation expense were $8 million, $9 million and $9 million for the years ended December 31, 2025, 2024 and 2023, respectively.

The following presents expected stock-based compensation expense in future periods for outstanding awards as of December 31, 2025:


(in millions)
2026	$	18
2027		9
2028		1
2029		1
Total	$	29

Stock-based compensation expense is primarily included in Selling, general and administrative expenses in the Company’s consolidated statements of earnings.

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	60,309,739	61,126,646
Common stock, shares issued	60,309,739	61,126,646
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0

Accounts Receivable, Net - Schedule of Accounts Receivable Net (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Receivables [Abstract]
Customer receivables	$ 715	$ 678
Other current receivables	15	8
Total accounts receivable	730	686
Less: allowance for estimated credit losses	(7)	(8)
Accounts receivable, net	$ 723	$ 678

Consolidated Statements of Comprehensive Earnings - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Consolidated net earnings	$ 1,137	$ 1,996	$ 1,170
Defined benefit pension and postretirement plans:
Net gain (loss) arising during period, net of tax of $21, $11 and $(5), respectively	62	33	(16)
Amortization of prior service cost, net of tax of $2, $1 and $2, respectively	4	5	4
Amortization of actuarial loss, net of tax of $0, $0 and $0, respectively	1	1	0
Amount recognized in net periodic pension cost due to settlement, net of tax of $1, $0 and $0, respectively	4	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax, Total	71	39	(12)
Foreign currency translation gain (loss)	2	(3)	1
Other Comprehensive Income (Loss), Net of Tax	73	36	(11)
Comprehensive Earnings Attributable to Martin Marietta	$ 1,210	$ 2,032	$ 1,159

Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2025

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Note F: Property, Plant and Equipment, Net


December 31
(in millions)	2025			2024
Land and land improvements	$	1,929		$	1,786
Mineral reserves and interests		6,529			6,306
Buildings		193			160
Machinery and equipment		5,992			5,451
Construction in progress		319			286
Finance lease right-of-use assets		368			253
Total property, plant and equipment		15,330			14,242
Less: accumulated depreciation, depletion and amortization		(5,040	)		(4,582	)
Property, plant and equipment, net	$	10,290		$	9,660

Depreciation, depletion and amortization expense related to property, plant and equipment was $562 million, $482 million and $430 million for the years ended December 31, 2025, 2024 and 2023, respectively. Depreciation, depletion and amortization expense includes amortization of right-of-use assets from finance leases.

At December 31, 2025 and 2024, $41 million and $40 million, respectively, of the Building Materials business’ property, plant and equipment, net, were located in The Bahamas and Canada.

Leases - Summary of Future Lease Payments (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Operating Leases
Present value of lease payments	$ 382	$ 382
Less: current lease obligations	(62)	(55)
Total long-term lease obligations	320	327
Financing Leases
Present value of lease payments	302	203
Less: current lease obligations	(15)	(13)
Total long-term lease obligations	287	$ 190
Discontinued Operations
Operating Leases
Less: leases classified as held for sale	(10)
Financing Leases
Less: leases classified as held for sale	(12)
Continuing Operations
Operating Leases
2026	80
2027	69
2028	58
2029	44
2030	36
Thereafter	208
Total lease payments	495
Less: imputed interest	(103)
Present value of lease payments	392
Less: current lease obligations	(62)
Total long-term lease obligations	320
Financing Leases
2026	28
2027	27
2028	29
2029	25
2030	25
Thereafter	345
Total lease payments	479
Less: imputed interest	(165)
Present value of lease payments	314
Less: current lease obligations	(15)
Total long-term lease obligations	$ 287

Supplemental Cash Flow Information - Schedule of Noncash Investing and Financing Activities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Supplemental Cash Flow Elements [Abstract]
Accrued liabilities for purchases of property, plant and equipment	$ 140	$ 143	$ 128
Right-of-use assets obtained in exchange for new operating lease liabilities	75	68	63
Right-of-use assets obtained in exchange for new finance lease liabilities	67	17	22
Remeasurement of finance lease right-of-use assets	50	27	0
Remeasurement of operating lease right-of-use assets	(1)	7	10
Acquisition of assets through asset exchange	$ 0	$ 0	$ 5

Retirement and Other Benefit Plans - Schedule of Amounts Recognized on Consolidated Balance Sheet (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Noncurrent asset	$ 487	$ 371
Current liability	(17)	(13)
Noncurrent liability	(86)	(87)
Net amount recognized at end of year	$ 384	$ 271

- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References + Details

- Definition

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

+ References

+ Details

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Lessee Lease Description [Line Items]
Option to terminate lease	options to terminate the leases within one year
Royalties expenses	$ 104	$ 92	$ 86
Minimum
Lessee Lease Description [Line Items]
Financing lease term	1 year
Estimated incremental percentage on interest rate	0.004%	0.004%
Maximum
Lessee Lease Description [Line Items]
Financing lease term	46 years
Estimated incremental percentage on interest rate	6.00%	6.00%

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale

12 Months Ended

Dec. 31, 2025

Business Combination [Abstract]

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale

Note B: Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale

Business Combinations

Premier Magnesia, LLC. On July 25, 2025, the Company acquired Premier Magnesia, LLC (Premier), a privately-owned producer and distributor of magnesia-based products, using cash on hand and credit-facility borrowings. Premier is the largest producer of natural magnesite and magnesium sulfate, or Epsom salt, in the United States, with facilities in Nevada, North Carolina, Indiana and Pennsylvania. This transaction expands the Company's product offerings to new and existing customers and enhances the Company's Specialties business. The Company has recorded preliminary fair values of the assets acquired and liabilities assumed, which are subject to additional reviews that are not yet complete. Thus, these amounts are subject to change during the measurement period, which extends no longer than one year from the consummation date, and remains open as of December 31, 2025. Specific accounts subject to ongoing purchase accounting adjustments, include, but are not limited to, property, plant and equipment; goodwill; and other liabilities. The goodwill generated by the transaction is deductible for income tax purposes. The

acquisition is reported in the Company's Specialties reportable segment and is immaterial for other business combination disclosures, including pro-forma results of operations.

QUIKRETE Holdings, Inc. On August 3, 2025, the Company entered into a definitive agreement with Quikrete Holdings, Inc. (QUIKRETE) for the exchange of certain assets. Under the agreement, Martin Marietta will receive aggregates facilities producing approximately 20 million tons annually in Virginia, Missouri, Kansas and Vancouver, British Columbia, as well as cash proceeds. In exchange, QUIKRETE will receive the Company’s Midlothian cement plant, related cement distribution terminals, Texas ready mixed concrete assets and certain nonoperating land. The aggregates facilities to be acquired will complement Martin Marietta’s existing geographic footprint in its Central Division and allow the Company to expand into new growth platforms in the target markets of Virginia and the Pacific Northwest.

Business Combinations (2024)

Revenues and pretax earnings attributable to operations acquired in 2024 (as subsequently described) included in the Company's consolidated statement of earnings for the year ended December 31, 2024 were $261 million and $38 million, respectively. Pretax earnings attributable to acquired operations for 2024 reflected the impact of selling acquired inventory after its markup to fair value as part of acquisition accounting, including $20 million related to the Blue Water Industries LLC transaction.

Blue Water Industries LLC. On April 5, 2024, the Company completed the acquisition of 20 active aggregates operations in Alabama, South Carolina, South Florida, Tennessee, and Virginia from affiliates of Blue Water Industries LLC (BWI Southeast) for $2.05 billion in cash. The BWI Southeast acquisition complemented Martin Marietta’s existing geographic footprint in the southeast region by allowing the Company to expand into new growth platforms in target markets, including Tennessee and South Florida. The results from the acquired operations are reported in the Company's East Group.

The Company determined the acquisition-date fair values of assets acquired and liabilities assumed. Notably, during the measurement period, which was closed as of April 5, 2025, the Company increased the acquisition-date fair value of property, plant and equipment by $91 million and reduced goodwill by $83 million. The goodwill generated by the transaction is not deductible for income tax purposes.

The following is a summary of the fair values of the assets acquired and liabilities assumed as of April 5, 2024:


(in millions)
Assets:
Inventories	$	47
Property, plant and equipment1		2,052
Intangible assets, other than goodwill		19
Other assets		2
Total assets		2,120
Liabilities:
Deferred income taxes		234
Asset retirement obligations		3
Other liabilities		95
Total liabilities		332
Net identifiable assets acquired		1,788
Goodwill		262
Total consideration	$	2,050

1 Includes mineral reserves of $1.9 billion.

The following unaudited pro forma financial information summarizes the combined results of operations for the Company and BWI Southeast as though the companies were combined as of January 1, 2023. The unaudited pro forma financial information does not purport to project the future financial position or operating results of the combined company. Consistent with the assumed acquisition date of January 1, 2023, the pro forma financial results include acquisition and integration expenses of $23 million and a $20 million charge for selling inventory after its markup to fair value for the year ended December 31, 2023.

The following pro forma financial information is for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place as of January 1, 2023:


years ended December 31
(in millions)	2024		2023
Revenues	$	5,714	$	6,076
Net earnings from continuing operations attributable to Martin Marietta	$	1,848	$	939

Other Business Combinations. On January 12, 2024, the Company acquired Albert Frei & Sons, Inc. (AFS), a leading aggregates producer in Colorado. This acquisition provided more than 60 years (at current production levels) of high-quality, hard rock reserves to better serve new and existing customers and enhances the Company's aggregates platform in the Denver metropolitan area. The Company determined the acquisition-date fair values of the assets acquired and liabilities assumed. As of December 31, 2024, the measurement period was closed. The goodwill generated by the transaction is not deductible for income tax purposes. The acquisition is reported in the Company's West Group and is immaterial for other business combination disclosures, including pro-forma results of operations.

On October 25, 2024, the Company completed the acquisition of Youngquist Brothers Rock, LLC (YBR), a leading aggregates supplier in the Fort Myers, Florida area. This acquisition allowed the Company to serve new and existing customers and enhances the Company's aggregates platform in South Florida. The acquisition was financed through short-term borrowings, which were repaid upon a public debt offering completed on November 4, 2024 (see Note G). The Company recorded fair values of the assets acquired and liabilities assumed, and the measurement period was closed as of September 30, 2025. The goodwill generated by the transaction is deductible for income tax purposes. The acquisition is reported in the Company's East Group and is immaterial for other business combination disclosures, including pro-forma results of operations.

On December 13, 2024, the Company acquired R.E. Janes Gravel Co. (RE Janes), an aggregates bolt-on in Texas. The Company recorded fair values of the assets acquired and liabilities assumed. As of December 31, 2025, the measurement period is closed. The goodwill generated by the transaction is deductible for income tax purposes. The acquisition is reported in the Company's West Group and is immaterial for other business combination disclosures, including pro-forma results of operations.

In 2024, the Company completed acquisitions for total consideration of $1.6 billion, excluding the BWI Southeast transaction. On a combined basis, these acquisitions (excluding BWI Southeast) included $1.5 billion of property, plant and equipment (including $1.3 billion in mineral reserves), $123 million of goodwill, $28 million of other intangibles and $92 million of deferred income tax liabilities. Individually and on a combined basis, these acquisitions are immaterial for other business combination disclosures, including pro-forma results of operations.

Divestitures

On February 9, 2024, the Company completed the sale of its South Texas cement business and certain of its related ready mixed concrete operations to CRH Americas Materials, Inc., a subsidiary of CRH plc, for $2.1 billion in cash plus normal customary closing adjustments. Specifically, the divested facilities included the Hunter cement plant in New Braunfels, Texas, related cement distribution terminals and 20 ready mixed concrete plants that served the Austin and San Antonio region. The divestiture provided proceeds the Company used to consummate the BWI Southeast acquisition. The transaction resulted in a pretax gain of $1.3 billion, which is included in Other operating income, net, in the Company's consolidated statement of earnings for the year ended December 31, 2024 and is exclusive of transaction expenses incurred due to the divestiture. The historical financial results of these divested operations and the gain on divestiture were reported in continuing operations for the West Group.

On October 31, 2023, the Company completed the sale of its Tehachapi, California cement plant to UNACEM Corp S.A.A. for $315 million in cash. In connection with the divestiture, the Company recorded a $26 million pretax loss in discontinued operations.

In May 2023, the Company divested its Stockton cement import terminal in California.

Discontinued Operations

In connection with the pending QUIKRETE asset exchange, the Company's Midlothian cement plant, related cement distribution terminals and Texas ready mixed concrete plants, which are part of the West Group, have been classified as assets held for sale on the consolidated balance sheets as of December 31, 2025 and 2024 and their associated financial results are reported as discontinued operations on the consolidated statements of earnings for all periods presented.

Additionally, the associated financial results for the Company's California cement operations, which were part of the Company's West Group, were reported as discontinued operations on the consolidated statements of earnings for 2023 through their respective divestiture dates.

Financial results for the Company's discontinued operations are as follows:


years ended December 31 (in millions)	2025		2024		2023
Revenues	$	845	$	874	$	1,021
Cost of revenues		633		632		745
Gross profit	$	212	$	242	$	276

Pretax earnings from operations	$	189	$	231	$	250
Pretax loss on divestitures and sales of assets		—		—		(24	)
Pretax earnings		189		231		226
Income tax expense		42		51		48
Earnings from discontinued operations, net of income tax expense	$	147	$	180	$	178

Cash flow information for the Company's discontinued operations is as follows:


years ended December 31 (in millions)	2025			2024			2023
Net cash provided by operating activities	$	187		$	232		$	221
Additions to property, plant and equipment	$	(89	)	$	(100	)	$	(102	)
Acquisitions, net of cash acquired		—			(24	)		—
Proceeds from divestitures and sales of assets		8			6			376
Net cash (used for) provided by investing activities	$	(81	)	$	(118	)	$	274
Net cash used for financing activities	$	(6	)	$	(6	)	$	(6	)

Assets and Liabilities Held for Sale

Assets and liabilities held for sale at December 31, 2025 and 2024 included the Company's Midlothian cement plant, related cement distribution terminals, Texas ready mixed concrete plants and certain nonoperating land.

Assets and liabilities held for sale are as follows:


	2025
December 31 (in millions)	Continuing Operations		Discontinued Operations		Total
Inventories, net	$	—	$	98	$	98
Investment land		11		—		11
Property, plant and equipment, net		—		486		486
Goodwill		—		374		374
Intangible assets, excluding goodwill		—		249		249
Operating lease right-of-use assets		—		10		10
Other assets		—		2		2
Total current assets held for sale	$	11	$	1,219	$	1,230

Lease obligations	$	—	$	22	$	22
Other liabilities		—		12		12
Total current liabilities held for sale	$	—	$	34	$	34


	2024
December 31 (in millions)	Continuing Operations		Discontinued Operations		Total
Inventories, net	$	—	$	1	$	1
Investment land		8		—		8
Property, plant and equipment, net		—		6		6
Total current assets held for sale	$	8	$	7	$	15

Inventories, net	$	—	$	96	$	96
Property, plant and equipment, net		—		443		443
Goodwill		—		374		374
Intangible assets, excluding goodwill		—		253		253
Operating lease right-of-use assets		—		10		10
Other assets		—		3		3
Total noncurrent assets held for sale	$	—	$	1,179	$	1,179

Lease obligations	$	—	$	28	$	28
Other liabilities		—		10		10
Total noncurrent liabilities held for sale	$	—	$	38	$	38

Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues	$ 6,150	$ 5,662	$ 5,851
Cost of revenues	4,261	4,026	4,106
Gross Profit	1,889	1,636	1,745
Selling, general and administrative expenses	443	429	425
Acquisition, divestiture and integration expenses	15	50	12
Other operating income, net	(6)	(1,322)	(25)
Earnings from Operations	1,437	2,479	1,333
Interest expense	230	169	165
Other nonoperating income, net	(19)	(56)	(58)
Earnings from continuing operations before income tax expense	1,226	2,366	1,226
Income tax expense	236	550	234
Earnings from continuing operations	990	1,816	992
Earnings from discontinued operations, net of income tax expense	147	180	178
Consolidated net earnings	1,137	1,996	1,170
Less: Net earnings attributable to noncontrolling interests	0	1	1
Net Earnings Attributable to Martin Marietta	$ 1,137	$ 1,995	$ 1,169
Net Earnings Attributable to Martin Marietta Per Common Share (see Note A)
Basic from continuing operations attributable to common shareholders	$ 16.37	$ 29.58	$ 16.01
Basic from discontinued operations attributable to common shareholders	2.44	2.92	2.87
Total basic attributable to common shareholders	18.81	32.5	18.88
Diluted from continuing operations attributable to common shareholders	16.34	29.5	15.96
Diluted from discontinued operations attributable to common shareholders	2.43	2.91	2.86
Total diluted attributable to common shareholders	$ 18.77	$ 32.41	$ 18.82
Weighted-Average Common Shares Outstanding
Basic	60.5	61.4	61.9
Diluted	60.6	61.6	62.1

Property, Plant and Equipment, Net - Property, Plant and Equipment, Net (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Property Plant And Equipment [Line Items]
Total property, plant and equipment	$ 15,330	$ 14,242
Less: accumulated depreciation, depletion and amortization	(5,040)	(4,582)
Property, plant and equipment, net	10,290	9,660
Land and Land Improvements
Property Plant And Equipment [Line Items]
Total property, plant and equipment	1,929	1,786
Mineral Reserves and Interests
Property Plant And Equipment [Line Items]
Total property, plant and equipment	6,529	6,306
Buildings
Property Plant And Equipment [Line Items]
Total property, plant and equipment	193	160
Machinery and Equipment
Property Plant And Equipment [Line Items]
Total property, plant and equipment	5,992	5,451
Construction in Progress
Property Plant And Equipment [Line Items]
Total property, plant and equipment	319	286
Finance Lease Right Of Use Assets
Property Plant And Equipment [Line Items]
Total property, plant and equipment	$ 368	$ 253

Quarterly Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2025

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results of Continuing Operations

The following table provides unaudited summarized quarterly financial information on this basis to allow for a meaningful comparison of continuing operations.


(in millions)	Revenues				Gross Profit				Earnings from Continuing Operations				Consolidated Net Earnings				Net Earnings Attributable to Martin Marietta
Quarter	2025		2024		2025		2024		2025		2024		2025		2024		2025		2024
First	$	1,161	$	1,056	$	314	$	250	$	104	$	1,030	$	116	$	1,045	$	116	$	1,045
Second		1,609		1,552		496		449		292		241		328		294		328		293
Third		1,846		1,642		611		513		361		297		414		363		414		363
Fourth		1,534		1,412		468		424		233		248		279		294		279		294
Total	$	6,150	$	5,662	$	1,889	$	1,636	$	990	$	1,816	$	1,137	$	1,996	$	1,137	$	1,995

Accounting Policies - Basic and Diluted Earnings from Continuing Operations Per Common Share (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Basic weighted-average common shares outstanding	60.5	61.4	61.9
Effect of dilutive employee and director awards	0.1	0.2	0.2
Diluted weighted-average common shares outstanding	60.6	61.6	62.1

Commitments and Contingencies - Changes in Asset Retirement Obligations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of year	$ 429	$ 397	$ 380
Accretion expense	11	11	11
Liabilities incurred and liabilities assumed in business combinations	2	12	34
Liabilities settled	(8)	(2)	(28)
Revisions in estimated cash flows	(81)	9	(13)
Liabilities reclassified from assets held for sale	0	2	13
Balance at end of year	$ 353	$ 429	$ 397

Debt - Schedule of Corporation's Long-Term Debt Maturities (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Debt Disclosure [Abstract]
2026	$ 30
2027	792
2028	0
2029	0
2030	473
Thereafter	4,028
Total debt	$ 5,323	$ 5,413

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

Schedule of Changes in Asset Retirement Obligations

The following shows the changes in asset retirement obligations:


years ended December 31 (in millions)	2025			2024			2023
Balance at beginning of year	$	429		$	397		$	380
Accretion expense		11			11			11
Liabilities incurred and liabilities assumed in business combinations		2			12			34
Liabilities settled		(8	)		(2	)		(28	)
Revisions in estimated cash flows		(81	)		9			(13	)
Liabilities reclassified from assets held for sale		—			2			13
Balance at end of year	$	353		$	429		$	397

Schedule of Contractual Purchase Commitments

The Company’s contractual purchase commitments as of December 31, 2025 are as follows:


(in millions)
2026	$	174
2027		31
2028		13
2029		11
2030		12
Thereafter		32
Total	$	273

Schedule of Future Minimum Contracts of Affreightment and Royalty Commitments for All Noncancelable Agreements

Future minimum contracts of affreightment and royalty commitments for all noncancelable agreements that are not accounted for as leases on the Company’s consolidated balance sheet as of December 31, 2025 are as follows:


(in millions)	Contracts of Affreightment		Royalty Commitments
2026	$	17	$	30
2027		18		17
2028		—		16
2029		—		13
2030		—		12
Thereafter		—		81
Total	$	35	$	169

Insider Trading Policies and Procedures	3 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Consolidated Statements of Total Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Stockholders' Equity [Abstract]
Dividends declared	$ 3.24	$ 3.06	$ 2.8

Debt - Schedule of Principal Amount, Effective Interest Rate and Maturity Date for Corporation's Senior Notes (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2025	Nov. 04, 2024
3.450% Senior Notes, Due 2027
Debt Instrument [Line Items]
Principal Amount	$ 300,000,000
Effective Interest Rate	3.55%
Maturity Date	Jun. 01, 2027
3.500% Senior Notes, Due 2027
Debt Instrument [Line Items]
Principal Amount	$ 495,000,000
Effective Interest Rate	3.61%
Maturity Date	Dec. 15, 2027
2.500% Senior Notes, Due 2030
Debt Instrument [Line Items]
Principal Amount	$ 478,000,000
Effective Interest Rate	2.71%
Maturity Date	Mar. 15, 2030
2.400% Senior Notes, Due 2031
Debt Instrument [Line Items]
Principal Amount	$ 896,000,000
Effective Interest Rate	2.48%
Maturity Date	Jul. 15, 2031
5.150% Senior Notes, Due 2034
Debt Instrument [Line Items]
Principal Amount	$ 750,000,000	$ 750,000,000
Effective Interest Rate	5.33%
Maturity Date	Dec. 01, 2034
6.25% Senior Notes, Due 2037
Debt Instrument [Line Items]
Principal Amount	$ 230,000,000
Effective Interest Rate	6.32%
Maturity Date	May 01, 2037
4.250% Senior Notes, Due 2047
Debt Instrument [Line Items]
Principal Amount	$ 598,000,000
Effective Interest Rate	4.32%
Maturity Date	Dec. 15, 2047
3.200% Senior Notes, Due 2051
Debt Instrument [Line Items]
Principal Amount	$ 866,000,000
Effective Interest Rate	3.29%
Maturity Date	Jul. 15, 2051
5.500% Senior Notes, Due 2054
Debt Instrument [Line Items]
Principal Amount	$ 750,000,000	$ 750,000,000
Effective Interest Rate	5.70%
Maturity Date	Dec. 01, 2054

Financial Instruments

12 Months Ended

Dec. 31, 2025

Financial Instruments Disclosure [Abstract]

Financial Instruments

Note H: Financial Instruments

The Company’s financial instruments include temporary cash investments, accounts receivable, accounts payable, Trade Receivable Facility borrowings, publicly-registered long-term notes and debentures.

Temporary cash investments are placed primarily in money market funds, money market demand deposit accounts and Eurodollar time deposit accounts with financial institutions. The Company’s cash equivalents have maturities of less than three months. Due to the short maturity of these investments, they are carried on the consolidated balance sheets at cost, which approximates fair value.

Accounts receivable are due from a large number of customers, primarily in the construction industry, and are dispersed across wide geographic and economic regions. However, accounts receivable are more heavily concentrated in certain states, namely Texas, North Carolina, Colorado, California, Georgia, Florida, South Carolina, Arizona, Iowa, and Minnesota. The carrying values of accounts receivable approximates their fair values.

Accounts payable represent amounts owed to suppliers and vendors. The estimated carrying value of accounts payable approximates its fair value due to the short-term nature of the payables.

The carrying value and fair value of the Company’s debt were $5.3 billion and $4.9 billion, respectively, at December 31, 2025 and $5.4 billion and $4.8 billion, respectively, at December 31, 2024 (see Note G). Due to its short-term nature, the carrying value of Trade Receivable Facility borrowings approximates its fair value. The estimated fair value of the Company’s publicly-registered long-term debt was estimated based on Level 1 of the fair value hierarchy using quoted market prices.

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Summary Information for Restricted Stock Awards and Incentive Compensation Stock Awards

he following table summarizes information for restricted stock awards and incentive compensation stock awards for 2025:


	Restricted Stock - Service Based					Restricted Stock - Performance Based					Incentive Compensation Stock
	Number of Awards			Weighted- Average Grant-Date Fair Value		Number of Awards			Weighted- Average Grant-Date Fair Value		Number of Awards			Weighted- Average Grant-Date Fair Value
January 1, 2025		191,534		$	370.27		88,504		$	468.71		15,543		$	497.76
Awarded		55,701		$	510.86		32,254		$	503.38		8,234		$	489.84
Distributed		(73,623	)	$	383.21		(66,977	)	$	417.26		(4,378	)	$	367.88
Forfeited		(6,752	)	$	470.05		(7,545	)	$	499.19		(377	)	$	517.31
Adjustment for performance		—		$	—		38,268		$	417.25		—		$	—
December 31, 2025		166,860		$	407.46		84,504		$	496.69		19,022		$	523.83

Summary Information for Stock Options

The following table includes summary information for stock options as of December 31, 2025:


	Number of Options			Weighted- Average Exercise Price
Outstanding at January 1, 2025		3,623		$	154.58
Exercised		(3,623	)	$	154.58
Outstanding at December 31, 2025		-		$	-

Exercisable at December 31, 2025		-		$	-

Schedule of Stock-Based Compensation Expense


(in millions, except year data)	Restricted Stock (Service- and Performance-Based)		Incentive Compensation Stock		Directors’ Fees Paid in Stock		Total
Stock-based compensation expense recognized for years ended December 31:
2025	$	45	$	1	$	—	$	46
2024	$	56	$	1	$	1	$	58
2023	$	49	$	1	$	—	$	50
Unrecognized compensation cost at December 31, 2025	$	28	$	1	$	—	$	29
Weighted-average period over which unrecognized compensation cost will be recognized	2.1 years		1.6 years

Stock-Based Compensation Expense in Future for Outstanding Awards

The following presents expected stock-based compensation expense in future periods for outstanding awards as of December 31, 2025:


(in millions)
2026	$	18
2027		9
2028		1
2029		1
Total	$	29

Segments (Tables)

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Financial Data for Continuing Operation for Company's Reportable Business Segments


year ended December 31, 2025 (in millions)	East Group			West Group		Specialties		Total Reportable Segments		Corporate			Total
Segment Revenues	$	3,194		$	2,515	$	441	$	6,150	$	—		$	6,150
Less:
Labor and benefits expense		417			300		59		776		3			779
Raw materials expense		89			128		26		243		—			243
Depreciation, depletion and amortization expense		314			212		26		552		3			555
Energy expense		146			103		36		285		—			285
External freight expense		114			234		39		387		—			387
Other costs of revenues		962			915		118		1,995		17			2,012
Selling, general and administrative expenses		164			147		27		338		105			443
Acquisition, divestiture and integration expenses		—			—		—		—		15			15
Other operating (income) expense, net		(4	)		21		—		17		(23	)		(6	)
Segment Earnings (Loss) from Operations	$	992		$	455	$	110	$	1,557	$	(120	)	$	1,437
Interest expense														230
Other nonoperating income, net														(19	)
Earnings from continuing operations before income tax expense													$	1,226


year ended December 31, 2024 (in millions)	East Group		West Group			Specialties			Total Reportable Segments			Corporate			Total
Segment Revenues	$	2,941	$	2,401		$	320		$	5,662		$	—		$	5,662
Less:
Labor and benefits expense		391		296			39			726			1			727
Raw materials expense		96		178			18			292			—			292
Depreciation, depletion and amortization expense		259		191			15			465			3			468
Energy expense		145		105			31			281			—			281
External freight expense		108		208			31			347			—			347
Other costs of revenues		905		892			79			1,876			35			1,911
Selling, general and administrative expenses		139		136			20			295			134			429
Acquisition, divestiture and integration expenses		—		16			—			16			34			50
Other operating expense (income), net		7		(1,303	)		(3	)		(1,299	)		(23	)		(1,322	)
Segment Earnings (Loss) from Operations	$	891	$	1,682		$	90		$	2,663		$	(184	)		2,479
Interest expense																169
Other nonoperating income, net																(56	)
Earnings from continuing operations before income tax expense															$	2,366


year ended December 31, 2023 (in millions)	East Group			West Group			Specialties		Total Reportable Segments			Corporate			Total
Segment Revenues	$	2,763		$	2,773		$	315	$	5,851		$	—		$	5,851
Less:
Labor and benefits expense		362			328			36		726			(7	)		719
Raw materials expense		104			251			22		377			—			377
Depreciation, depletion and amortization expense		205			206			13		424			3			427
Energy expense		152			163			37		352			—			352
External freight expense		113			221			30		364			—			364
Other costs of revenues		854			932			80		1,866			1			1,867
Selling, general and administrative expenses		124			139			18		281			144			425
Acquisition, divestiture and integration expenses		—			6			—		6			6			12
Other operating (income) expense, net		(8	)		(7	)		3		(12	)		(13	)		(25	)
Segment Earnings (Loss) from Operations	$	857		$	534		$	76	$	1,467		$	(134	)	$	1,333
Interest expense																165
Other nonoperating income, net																(58	)
Earnings from continuing operations before income tax expense															$	1,226


December 31 (in millions) Assets employed	2025		2024
East Group	$	8,783	$	8,452
West Group		7,972		7,941
Specialties		883		269
Total reportable segments		17,638		16,662
Corporate		1,073		1,508
Total	$	18,711	$	18,170

The following tables display property additions for the Company's reportable segments:


years ended December 31 (in millions) Total property additions, including the impact of acquisitions	2025		2024		2023
East Group	$	537	$	3,185	$	231
West Group		300		1,216		342
Specialties		377		32		39
Total reportable segments		1,214		4,433		612
Corporate		26		22		14
Total	$	1,240	$	4,455	$	626


years ended December 31 (in millions) Property additions through acquisitions	2025		2024		2023
East Group	$	92	$	2,853	$	—
West Group		2		732		—
Specialties		335		—		—
Total reportable segments		429		3,585		—
Corporate		—		—		—
Total	$	429	$	3,585	$	—

Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property Plant And Equipment And Finance Lease Right Of Use Asset Depreciation and Amortization	$ 562	$ 482	$ 430
Property, plant and equipment, net	10,290	9,660
Bahamas And Canada
Property Plant And Equipment [Line Items]
Property, plant and equipment, net	$ 41	$ 40

Retirement and Other Benefit Plans - Schedule of Weighted-Average Assumptions (Detail) - Pension	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.97%	6.00%
Rate of increase in future compensation levels	4.50%	4.50%
Discount rate	6.00%	5.58%	5.88%
Rate of increase in future compensation levels	4.50%	4.50%	4.50%
Expected long-term rate of return on assets	6.75%	6.75%	6.75%

- Definition

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

+ References

+ Details

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities:
Consolidated net earnings	$ 1,137	$ 1,996	$ 1,170
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization	637	573	513
Stock-based compensation expense	46	58	50
Net gains on divestitures and sales of assets	(25)	(1,369)	(2)
Deferred income taxes, net	69	(45)	(36)
Asset and portfolio rationalization charges	21	50	0
Other items, net	(8)	(15)	(16)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net	(51)	81	31
Inventories, net	(30)	(52)	(189)
Accounts payable	21	17	(17)
Other assets and liabilities, net	(32)	165	24
Net Cash Provided by Operating Activities	1,785	1,459	1,528
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(807)	(855)	(650)
Acquisitions, net of cash acquired	(685)	(3,642)	0
Proceeds from divestitures and sales of assets	38	2,160	427
Proceeds from sale of restricted investments to discharge long term debt	0	0	700
Investments in limited liability companies	(128)	(117)	(27)
Other investing activities, net	(6)	10	9
Net Cash (Used for) Provided by Investing Activities	(1,588)	(2,444)	459
Cash Flows from Financing Activities:
Proceeds from borrowings	640	2,758	0
Repayments of debt	(735)	(1,690)	(700)
Payments on finance lease obligations	(23)	(20)	(17)
Dividends paid	(197)	(189)	(174)
Repurchases of common stock	(450)	(450)	(150)
Shares withheld for employees’ income tax obligations	(31)	(32)	(22)
Other financing activities, net	(4)	(4)	(1)
Net Cash (Used for) Provided by Financing Activities	(800)	373	(1,064)
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(603)	(612)	923
Cash, Cash Equivalents and Restricted Cash, beginning of year	670	1,282	359
Cash, Cash Equivalents and Restricted Cash, end of year	$ 67	$ 670	$ 1,282

Stock-Based Compensation - Summary Information for Stock Options (Detail)	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Share-Based Payment Arrangement [Abstract]
Number of Options, Outstanding at January 1, 2025 \| shares	3,623
Number of Options, Exercised \| shares	(3,623)
Number of Options, Outstanding at December 31, 2025 \| shares	0
Number of Options, Exercisable at December 31, 2025 \| shares	0
Weighted-Average Exercise Price, Outstanding at January 1, 2025 \| $ / shares	$ 154.58
Weighted-Average Exercise Price, Exercised \| $ / shares	154.58
Weighted-Average Exercise Price, Outstanding at December 31, 2025 \| $ / shares	0
Weighted-Average Exercise Price, Exercisable at December 31, 2025 \| $ / shares	$ 0

Other Operating Income, Net

12 Months Ended

Dec. 31, 2025

Other Income and Expenses [Abstract]

Other Operating Income, Net

Note R: Other Operating Income, Net

Other operating income, net, is comprised generally of gains and losses on divestitures and the sale of assets; asset and portfolio rationalization charges; recoveries and losses related to certain customer accounts receivable; recoveries and losses on the resolution of contingency accruals; rental, royalty and services income; and accretion expense, depreciation expense, and gains and losses related to asset retirement obligations. These net amounts represented income of $6 million, $1.3 billion and $25 million in 2025, 2024 and 2023, respectively.

In 2025, other operating income, net, included $18 million of gains on land sales, which were offset by a $21 million pretax asset and portfolio rationalization charge primarily related to the discontinuation of five operations in the West Group that are no longer commercially viable.

In 2024, other operating income, net, included a $1.3 billion pretax gain on the divestiture of the South Texas cement business and certain of its related ready mixed concrete operations and $28 million of gains on land sales, which were partially offset by a $50 million pretax asset and portfolio rationalization charge. The 2024 asset and portfolio rationalization charge relates to the Company's decision to discontinue usage of certain long-haul distribution facilities to transport aggregates products into Colorado because the AFS acquisition completed in January 2024 provides more economical, local aggregates supply. This charge, which is reported in the West Group, reflects the Company's evaluation of the recoverability of certain long-lived assets, including property, plant and equipment and operating lease right-of-use assets, for the cessation of these railroad operations.

In 2023, other operating income, net, included $20 million of gains on land sales.

Commitments and Contingencies - Schedule of Future Minimum Contracts of Affreightment and Royalty Commitments for All Noncancelable Agreements (Detail) $ in Millions	Dec. 31, 2025 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2026	$ 17
2027	18
2028	0
2029	0
2030	0
Thereafter	0
Total	35
2026	30
2027	17
2028	16
2029	13
2030	12
Thereafter	81
Total	$ 169

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Summary of Discontinued Operations (Detail) - USD ($) $ in Millions		12 Months Ended
	Oct. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]
Revenues		$ 845	$ 874	$ 1,021
Cost of revenues		633	632	745
Gross profit		212	242	276
Pretax earnings from operations		189	231	250
Pretax loss on divestitures and sales of assets	$ (26)	0	0	(24)
Pretax earnings		189	231	226
Income tax expense		42	51	48
Earnings from discontinued operations, net of income tax expense		147	180	178
Net cash provided by operating activities		187	232	221
Additions to property, plant and equipment		(89)	(100)	(102)
Acquisitions, net of cash acquired		0	(24)	0
Proceeds from divestitures and sales of assets		8	6	376
Net cash (used for) provided by investing activities		(81)	(118)	274
Net cash used for financing activities		$ (6)	$ (6)	$ (6)

Stock-Based Compensation - Stock-Based Compensation Expense in Future for Outstanding Awards (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($)
Share-Based Payment Arrangement [Abstract]
2026	$ 18
2027	9
2028	1
2029	1
Total	$ 29

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Millions

Dec. 31, 2025

Dec. 31, 2024

Apr. 05, 2024

Dec. 31, 2023

Liabilities:

Goodwill

$ 3,614

$ 3,393

$ 3,389

Blue Water Industries LLC

Assets:

Inventories

$ 47

Property, plant and equipment

^[1]

2,052

Intangible assets, other than goodwill

Other assets

Total Assets

2,120

Liabilities:

Deferred income taxes

234

Asset retirement obligations

Other liabilities

Total liabilities

332

Net identifiable assets acquired

1,788

Goodwill

262

Total consideration

$ 2,050

[1]	Includes mineral reserves of $1.9 billion.

Debt

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Debt

Note G: Debt


December 31 (in millions)	2025			2024
7% Debentures, due 2025	$	—		$	125
3.450% Senior Notes, due 2027		299			299
3.500% Senior Notes, due 2027		493			493
2.500% Senior Notes, due 2030		473			472
2.400% Senior Notes, due 2031		891			890
5.150% Senior Notes, due 2034		739			738
6.25% Senior Notes, due 2037		229			228
4.250% Senior Notes, due 2047		591			591
3.200% Senior Notes, due 2051		851			851
5.500% Senior Notes, due 2054		727			726
Trade Receivable Facility, interest rate of 4.57% at December 31, 2025		30			—
Total debt		5,323			5,413
Less: current maturities		(30	)		(125	)
Long-term debt	$	5,293		$	5,288

On December 1, 2025, the Company used available liquidity to repay the $125 million of 7% Debentures at maturity.

On November 4, 2024, the Company issued $750 million aggregate principal amount of 5.150% Senior Notes due 2034 (the 5.150% Senior Notes due 2034) and $750 million aggregate principal amount of 5.500% Senior Notes due 2054 (the 5.500% Senior Notes due 2054). A portion of the net proceeds of the 5.150% Senior Notes due 2034 and 5.500% Senior Notes due 2054 were used for the repayment of all borrowings outstanding under the Company’s short-term borrowing facilities. The remaining net proceeds were used for general corporate purposes, including acquisitions, land purchases and other capital needs.

The Company’s 3.450% Senior Notes due 2027, 3.500% Senior Notes due 2027, 2.500% Senior Notes due 2030, 2.400% Senior Notes due 2031, 5.150% Senior Notes due 2034, 6.25% Senior Notes due 2037, 4.250% Senior Notes due 2047, 3.200% Senior Notes due 2051 and 5.500% Senior Notes due 2054 (collectively, the Senior Notes) are senior unsecured obligations of the Company, ranking equal in right of payment with the Company’s existing and future unsubordinated indebtedness. The Senior Notes, with the exception of the 6.25% Senior Notes due 2037, are redeemable prior to their respective par call dates, as defined, at a make-whole redemption price, and at a price equal to 100% of the principal amount after their respective par call dates and prior to their respective maturity dates. The 6.25% Senior Notes due 2037 are redeemable in whole at any time or in part from time to time at a make-whole redemption price. Upon a change-of-control repurchase event and a resulting below-investment-grade credit rating, the Company would be required to make an offer to repurchase all outstanding Senior Notes at a price in cash equal to 101% of the principal amount of the Senior Notes, plus any accrued and unpaid interest.

The Senior Notes are carried net of original issue discount, which is being amortized by the effective interest method over the life of the issue. The principal amount as of December 31, 2025, effective interest rate and maturity date for the Senior Notes are as follows:


	Principal Amount (in millions)		Effective Interest Rate	Maturity Date
3.450% Senior Notes	$	300	3.55%	June 1, 2027
3.500% Senior Notes	$	495	3.61%	December 15, 2027
2.500% Senior Notes	$	478	2.71%	March 15, 2030
2.400% Senior Notes	$	896	2.48%	July 15, 2031
5.150% Senior Notes	$	750	5.33%	December 1, 2034
6.25% Senior Notes	$	230	6.32%	May 1, 2037
4.250% Senior Notes	$	598	4.32%	December 15, 2047
3.200% Senior Notes	$	866	3.29%	July 15, 2051
5.500% Senior Notes	$	750	5.70%	December 1, 2054

The Company has a credit agreement with JPMorgan Chase Bank, N.A., as Administrative Agent, Deutsche Bank Securities, Inc., PNC Bank, N.A., Truist Bank and Wells Fargo Bank, N.A., as Syndication Agents, and the lenders party thereto (the Credit Agreement), which provides for a $800 million five-year senior unsecured revolving facility (the Revolving Facility) with a maturity date of December 21, 2030. Borrowings under the Revolving Facility bear interest, at the Company’s option, at rates based upon the Secured Overnight Financing Rate (SOFR) or a base rate, plus, for each rate, a margin determined in accordance with a ratings-based pricing grid. Any outstanding principal amounts, together with interest accrued thereon, are due in full on that maturity date. There were no borrowings outstanding under the Revolving Facility as of December 31, 2025 and 2024. Available borrowings under the Revolving Facility are reduced by any outstanding letters of credit issued by the Company under the Revolving Facility. At December 31, 2025 and 2024, the Company had $3 million of outstanding letters of credit issued and $797 million available for borrowing under the Revolving Facility. The Company paid the bank group an upfront loan commitment fee that is being amortized over the life of the Revolving Facility. The Revolving Facility includes an annual facility fee.

The Credit Agreement requires the Company’s ratio of consolidated net debt-to-consolidated earnings before interest, taxes, depreciation, depletion and amortization, as defined, for the trailing-twelve months (the Ratio) to not exceed 3.50x as of the end of any fiscal quarter, provided that the Company may exclude from the Ratio any debt incurred in connection with certain acquisitions during the quarter or three preceding quarters so long as the Ratio calculated without such exclusion does not exceed 4.00x. Additionally, if no amounts are outstanding under the Revolving Facility or the Company's trade receivable securitization facility (discussed later), consolidated debt, as defined, which includes debt for which the Company is a guarantor, shall be reduced in an amount equal to the lesser of $500 million or the sum of the Company’s unrestricted cash and temporary investments, for purposes of the covenant calculation. The Company was in compliance with the Ratio at December 31, 2025.

The Company, through a wholly-owned special-purpose subsidiary, has a $400 million trade receivable securitization facility (the Trade Receivable Facility). On September 16, 2025, the Company extended the maturity to September 16, 2026. The Trade Receivable Facility, with Truist Bank, Regions Bank, First Citizens Bank & Trust Company, and certain other lenders that may become a party to the facility from time to time, is backed by eligible trade receivables, as defined. Borrowings are limited to the lesser of the facility limit or the borrowing base, as defined. These receivables are originated by the Company and then sold or contributed to the wholly-owned special-purpose subsidiary. The Company continues to be responsible for the servicing and administration of the receivables purchased by the wholly-owned special-purpose subsidiary. Borrowings under the Trade Receivable Facility bear interest at a rate equal to Adjusted Term Secured Overnight Financing Rate (Adjusted Term SOFR), as defined, plus 0.7%. The Trade Receivable Facility contains a cross-default provision to the Company’s other debt agreements. Subject to certain conditions, including lenders providing the requisite commitments, the Trade Receivable Facility may be increased to a borrowing base not to exceed $600 million.

The Company’s long-term debt maturities for each of the next five years and thereafter are as follows:


(in millions)
2026	$	30
2027		792
2028		—
2029		—
2030		473
Thereafter		4,028
Total	$	5,323

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
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-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (d)
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
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-Name Accounting Standards Codification
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/470/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

+ Details

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Additional Information (Detail)
Tons in Millions, $ in Millions

3 Months Ended

12 Months Ended

Apr. 05, 2024

USD ($)

Facility

Feb. 09, 2024

USD ($)

Plant

Jan. 12, 2024

Oct. 31, 2023

USD ($)

Dec. 31, 2025

USD ($)

Sep. 30, 2025

USD ($)

Jun. 30, 2025

USD ($)

Mar. 31, 2025

USD ($)

Dec. 31, 2024

USD ($)

Sep. 30, 2024

USD ($)

Jun. 30, 2024

USD ($)

Mar. 31, 2024

USD ($)

Dec. 31, 2025

USD ($)

Dec. 31, 2024

USD ($)

Dec. 31, 2023

USD ($)

Aug. 03, 2025

Tons

Business Acquisition [Line Items]

Revenues

$ 1,534

$ 1,846

$ 1,609

$ 1,161

$ 1,412

$ 1,642

$ 1,552

$ 1,056

$ 6,150

$ 5,662

$ 5,851

Pretax earnings

1,437

2,479

1,333

Charges for selling acquired inventory

Reduction in goodwill

(7)

Pretax loss on divestiture

$ (26)

(24)

Pretax gain

1,300

Business combination periods for production level

60 years

Goodwill acquired

$ 3,614

3,393

$ 3,614

3,393

3,389

Revenues

$ 2,100

$ 315

Divestitures number of south texas ready mix operations | Plant

Quikrete [Member]

Business Acquisition [Line Items]

Production capacity of aggregate operations | Tons

Albert Frei & Sons, Inc. and Youngquist Brothers Rock, LLC and R.E. Janes Gravel Co.

Business Acquisition [Line Items]

Business combination, total consideration

1,600

Property, plant and equipment acquired

1,500

Goodwill acquired

123

Intangible assets acquired

Deferred income tax liabilities

Albert Frei & Sons, Inc. and Youngquist Brothers Rock, LLC and R.E. Janes Gravel Co. | Mineral reserves

Business Acquisition [Line Items]

Property, plant and equipment acquired

$ 1,300

1,300

Blue Water Industries LLC

Business Acquisition [Line Items]

Revenues

261

Pretax earnings

Acquisition related expenses

$ 23

Charges for selling acquired inventory

Number of active aggregates operations | Facility

Payments to acquire businesses gross

$ 2,050

Increase in fair value of property, plant and equipment

Reduction in goodwill

$ 83

Property, plant and equipment acquired

^[1]

2,052

Goodwill acquired

262

Intangible assets acquired

Deferred income taxes

$ 234

[1]	Includes mineral reserves of $1.9 billion.

Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2025

Receivables [Abstract]

Schedule of Accounts Receivable Net


December 31
(in millions)	2025			2024
Customer receivables	$	715		$	678
Other current receivables		15			8
Total accounts receivable		730			686
Less: allowance for estimated credit losses		(7	)		(8	)
Accounts receivable, net	$	723		$	678

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Summary of Assets and Liabilities held for Sale (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Inventories, net	$ 98	$ 1
Investment land	11	8
Property, plant and equipment	486	6
Goodwill	374	374
Intangible assets, excluding goodwill	249
Operating lease right-of-use assets	10
Other assets	2
Total current assets held for sale	1,230	15
Inventories, net		96
Property, plant and equipment, net		443
Goodwill		374
Intangible assets, excluding goodwill		253
Operating lease right-of-use assets		10
Other assets		3
Total noncurrent assets held for sale	0	1,179
Lease obligations	22
Other liabilities	12
Total current liabilities held for sale	34
Lease obligations		28
Other liabilities		10
Total noncurrent liabilities held for sale		38
Continuing Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Inventories, net	0	0
Investment land	11	8
Property, plant and equipment	0	0
Goodwill	0
Intangible assets, excluding goodwill	0
Operating lease right-of-use assets	0
Other assets	0
Total current assets held for sale	11	8
Inventories, net		0
Property, plant and equipment, net		0
Goodwill		0
Intangible assets, excluding goodwill		0
Operating lease right-of-use assets		0
Other assets		0
Total noncurrent assets held for sale		0
Lease obligations	0
Other liabilities	0
Total current liabilities held for sale	0
Lease obligations		0
Other liabilities		0
Total noncurrent liabilities held for sale		0
Discontinued Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Inventories, net	98	1
Investment land	0	0
Property, plant and equipment	486	6
Goodwill	374
Intangible assets, excluding goodwill	249
Operating lease right-of-use assets	10
Other assets	2
Total current assets held for sale	1,219	7
Inventories, net		96
Property, plant and equipment, net		443
Goodwill		374
Intangible assets, excluding goodwill		253
Operating lease right-of-use assets		10
Other assets		3
Total noncurrent assets held for sale		1,179
Lease obligations	22
Other liabilities	12
Total current liabilities held for sale	$ 34
Lease obligations		28
Other liabilities		10
Total noncurrent liabilities held for sale		$ 38

Goodwill and Other Intangible Assets - Intangible Assets acquired (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($)
Indefinite-Lived Intangible Assets [Line Items]
Total subject to amortization	$ 3
Total	$ 8
Weighted - average amortization period	8 years
Customer Relationships
Indefinite-Lived Intangible Assets [Line Items]
Total subject to amortization	$ 3
Weighted - average amortization period	8 years
Trade names
Indefinite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	$ 5

- Definition

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

+ References

+ Details

Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale (Tables)

12 Months Ended

Dec. 31, 2025

Business Combination [Abstract]

Summary of Fair Values of Assets Acquired and Liabilities Assumed

The following is a summary of the fair values of the assets acquired and liabilities assumed as of April 5, 2024:


(in millions)
Assets:
Inventories	$	47
Property, plant and equipment1		2,052
Intangible assets, other than goodwill		19
Other assets		2
Total assets		2,120
Liabilities:
Deferred income taxes		234
Asset retirement obligations		3
Other liabilities		95
Total liabilities		332
Net identifiable assets acquired		1,788
Goodwill		262
Total consideration	$	2,050

1 Includes mineral reserves of $1.9 billion.

Summary of Unaudited Pro Forma Financial Information


years ended December 31
(in millions)	2024		2023
Revenues	$	5,714	$	6,076
Net earnings from continuing operations attributable to Martin Marietta	$	1,848	$	939

Summary of Discontinued Operations and Assets and Liabilities Held for Sale

Financial results for the Company's discontinued operations are as follows:


years ended December 31 (in millions)	2025		2024		2023
Revenues	$	845	$	874	$	1,021
Cost of revenues		633		632		745
Gross profit	$	212	$	242	$	276

Pretax earnings from operations	$	189	$	231	$	250
Pretax loss on divestitures and sales of assets		—		—		(24	)
Pretax earnings		189		231		226
Income tax expense		42		51		48
Earnings from discontinued operations, net of income tax expense	$	147	$	180	$	178

Cash flow information for the Company's discontinued operations is as follows:


years ended December 31 (in millions)	2025			2024			2023
Net cash provided by operating activities	$	187		$	232		$	221
Additions to property, plant and equipment	$	(89	)	$	(100	)	$	(102	)
Acquisitions, net of cash acquired		—			(24	)		—
Proceeds from divestitures and sales of assets		8			6			376
Net cash (used for) provided by investing activities	$	(81	)	$	(118	)	$	274
Net cash used for financing activities	$	(6	)	$	(6	)	$	(6	)

Assets and liabilities held for sale are as follows:


	2025
December 31 (in millions)	Continuing Operations		Discontinued Operations		Total
Inventories, net	$	—	$	98	$	98
Investment land		11		—		11
Property, plant and equipment, net		—		486		486
Goodwill		—		374		374
Intangible assets, excluding goodwill		—		249		249
Operating lease right-of-use assets		—		10		10
Other assets		—		2		2
Total current assets held for sale	$	11	$	1,219	$	1,230

Lease obligations	$	—	$	22	$	22
Other liabilities		—		12		12
Total current liabilities held for sale	$	—	$	34	$	34


	2024
December 31 (in millions)	Continuing Operations		Discontinued Operations		Total
Inventories, net	$	—	$	1	$	1
Investment land		8		—		8
Property, plant and equipment, net		—		6		6
Total current assets held for sale	$	8	$	7	$	15

Inventories, net	$	—	$	96	$	96
Property, plant and equipment, net		—		443		443
Goodwill		—		374		374
Intangible assets, excluding goodwill		—		253		253
Operating lease right-of-use assets		—		10		10
Other assets		—		3		3
Total noncurrent assets held for sale	$	—	$	1,179	$	1,179

Lease obligations	$	—	$	28	$	28
Other liabilities		—		10		10
Total noncurrent liabilities held for sale	$	—	$	38	$	38

- Definition

Tabular disclosure of business combination. Includes, but is not limited to, recognized asset and liability.

+ References + Details

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-SubTopic 10
-Topic 360
-Publisher FASB
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3A
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-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3A

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
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-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Retirement and Other Benefit Plans - Schedule of Expected Benefit Payments (Detail) - Pension $ in Millions	Dec. 31, 2025 USD ($)
Defined Benefit Plan Disclosure [Line Items]
2026	$ 71
2027	63
2028	63
2029	64
2030	66
Years 2031 -2035	$ 360

- Definition

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

+ References

+ Details

Inventories, Net - Schedule of Inventories Net (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Inventory Disclosure [Abstract]
Finished products	$ 1,378	$ 1,316
Products in process	14	8
Raw materials	49	42
Supplies and expendable parts	124	106
Total inventories	1,565	1,472
Less: allowances	(487)	(454)
Inventories, net	$ 1,078	$ 1,018

Debt - Additional Information (Detail) - USD ($)		12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Nov. 04, 2024	Dec. 31, 2025	Dec. 01, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Debt instrument redemption price percentage		100.00%
Outstanding letters of credit		$ 34,000,000
Maximum consolidated debt reduction for unrestricted cash and temporary investments for debt covenant calculation		$ 500,000,000
Senior Notes
Debt Instrument [Line Items]
Debt instrument redemption price percentage		101.00%
Maximum \| Including Acquisition Bridge Debt
Debt Instrument [Line Items]
Debt covenant		3.5
Maximum \| Excluding Acquisition Bridge Debt
Debt Instrument [Line Items]
Debt covenant		4
Revolving Facility
Debt Instrument [Line Items]
Credit facility commitment		$ 800,000,000
Senior unsecured revolving facility, maturity period		5 years
Debt instrument maturity period		Dec. 21, 2030
Outstanding letters of credit		$ 3,000,000		$ 3,000,000
Available for borrowing under revolving facility		797,000,000		797,000,000
Outstanding borrowing under credit facility		$ 0		$ 0
7% Debentures, Due 2025
Debt Instrument [Line Items]
Debt instrument, face amount			$ 125,000,000
Interest rate on notes		7.00%	7.00%
Maturity year		2025
3.450% Senior Notes, Due 2027
Debt Instrument [Line Items]
Debt instrument, face amount		$ 300,000,000
Interest rate on notes		3.45%
Maturity year		2027
3.500% Senior Notes, Due 2027
Debt Instrument [Line Items]
Debt instrument, face amount		$ 495,000,000
Interest rate on notes		3.50%
Maturity year		2027
2.500% Senior Notes, Due 2030
Debt Instrument [Line Items]
Interest rate on notes		2.50%
Maturity year		2030
2.400% Senior Notes, Due 2031
Debt Instrument [Line Items]
Debt instrument, face amount		$ 896,000,000
Interest rate on notes		2.40%
Maturity year		2031
5.150% Senior Notes, Due 2034
Debt Instrument [Line Items]
Debt instrument, face amount	$ 750,000,000	$ 750,000,000
Interest rate on notes	5.15%	5.15%
Maturity year	2034	2034
6.25% Senior Notes, Due 2037
Debt Instrument [Line Items]
Debt instrument, face amount		$ 230,000,000
Interest rate on notes		6.25%
Maturity year		2037
4.250% Senior Notes, Due 2047
Debt Instrument [Line Items]
Debt instrument, face amount		$ 598,000,000
Interest rate on notes		4.25%
Maturity year		2047
3.200% Senior Notes, Due 2051
Debt Instrument [Line Items]
Debt instrument, face amount		$ 866,000,000
Interest rate on notes		3.20%
Maturity year		2051
5.500% Senior Notes, Due 2054
Debt Instrument [Line Items]
Debt instrument, face amount	$ 750,000,000	$ 750,000,000
Interest rate on notes	5.50%	5.50%
Maturity year	2054	2054
Trade Receivable Facility
Debt Instrument [Line Items]
Line of credit, trade receivable securitization facility		$ 400,000,000
Interest rate on notes		4.57%
Debt instrument maturity period		Sep. 16, 2026
Trade Receivable Facility \| Maximum
Debt Instrument [Line Items]
Credit facility commitment		$ 600,000,000
Trade Receivable Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.70%

Shareholders' Equity - Additional Information (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Common stock, shares authorized	100,000,000	100,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock reserved for issuance under stock-based award plans	900,000
Stock Repurchased During Period, Shares	900,000	800,000	400,000
Common stock remaining under repurchase authorization	11,000,000
Maximum
Class of Stock [Line Items]
Stock repurchase program, shares authorized to be repurchased	20,000,000

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 6: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 272
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483014/272-10-45-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 272
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482987/272-10-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(27)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(2)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

+ Details

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

Accounting Policies - Estimated Service Lives for Property, Plant and Equipment (Detail)	Dec. 31, 2025
Buildings \| Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Service Lives, Years	5 years
Buildings \| Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Service Lives, Years	30 years
Machinery and Equipment \| Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Service Lives, Years	2 years
Machinery and Equipment \| Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Service Lives, Years	20 years
Land Improvements \| Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Service Lives, Years	5 years
Land Improvements \| Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Service Lives, Years	60 years

Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Organization

Basis of Presentation and Use of Estimates

Basis of Consolidation

Revenue Recognition

Cash, Cash Equivalents and Restricted Cash

Cash, Cash Equivalents and Restricted Cash. Cash equivalents are comprised of highly-liquid instruments with original maturities of three months or less from the date of purchase.


December 31 (in millions)	2025		2024		2023
Cash and cash equivalents	$	67	$	670	$	1,272
Restricted cash		—		—		10
Total cash, cash equivalents and restricted cash presented in the consolidated statements of cash flows	$	67	$	670	$	1,282

Accounts Receivable

Inventories Valuation

Post-production stripping costs, which represent costs of removing overburden and waste materials to access mineral deposits, are a component of inventory production costs and recognized as incurred.

Property, Plant and Equipment

Property, Plant and Equipment. Property, plant and equipment are stated at cost.

The estimated service lives for property, plant and equipment are as follows:


Class of Assets		Range of Service Lives
Buildings		5 to 30 years
Machinery & Equipment		2 to 20 years
Land Improvements		5 to 60 years

Mineral reserves and mineral interests acquired in connection with a business combination are valued using an income approach for the estimated life of the reserves.

Repair and Maintenance Costs

Repair and Maintenance Costs. Repair and maintenance costs that do not substantially extend the life of the Company’s plant and equipment are expensed as incurred.

Leases

Leases with an initial lease term of one year or less are not recorded on the consolidated balance sheets. Costs for these leases are expensed as incurred.

Goodwill and Other Intangible Assets

Retirement Plans and Postretirement Benefits

Insurance Accruals

Stock-Based Compensation

Environmental Matters

Income Taxes

Uncertain Tax Positions

Sales Taxes

Start-Up Costs

Start-Up Costs. Noncapital start-up costs for new facilities and products are charged to operations as incurred.

Consolidated Comprehensive Earnings and Accumulated Other Comprehensive Earnings (Loss)

The components of the changes in accumulated other comprehensive earnings (loss) and related cumulative noncurrent deferred tax assets are as follows:


years ended December 31	Pension and Postretirement Benefit Plans			Foreign Currency			Total
(in millions)	2025
Accumulated other comprehensive loss at beginning of period	$	(9	)	$	(4	)	$	(13	)
Other comprehensive earnings before reclassifications, net of tax		62			2			64
Amounts reclassified from accumulated other comprehensive loss, net of tax		9			—			9
Other comprehensive earnings, net of tax		71			2			73
Accumulated other comprehensive earnings (loss) at end of period	$	62		$	(2	)	$	60
Cumulative noncurrent deferred tax assets at end of period	$	18		$	—		$	18

	2024
Accumulated other comprehensive loss at beginning of period	$	(48	)	$	(1	)	$	(49	)
Other comprehensive earnings (loss) before reclassifications, net of tax		33			(3	)		30
Amounts reclassified from accumulated other comprehensive loss, net of tax		6			—			6
Other comprehensive earnings (loss), net of tax		39			(3	)		36
Accumulated other comprehensive loss at end of period	$	(9	)	$	(4	)	$	(13	)
Cumulative noncurrent deferred tax assets at end of period	$	41		$	—		$	41

	2023
Accumulated other comprehensive loss at beginning of period	$	(36	)	$	(2	)	$	(38	)
Other comprehensive (loss) earnings before reclassifications, net of tax		(16	)		1			(15	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		4			—			4
Other comprehensive (loss) earnings, net of tax		(12	)		1			(11	)
Accumulated other comprehensive loss at end of period	$	(48	)	$	(1	)	$	(49	)
Cumulative noncurrent deferred tax assets at end of period	$	54		$	—		$	54

Reclassifications out of accumulated other comprehensive loss are as follows:


years ended December 31 (in millions)	2025			2024			2023			Affected line items in the consolidated statements of earnings
Pension and postretirement benefit plans:
Settlement charge	$	5		$	—		$	—
Amortization of:
Prior service cost		6			6			6
Actuarial loss		1			1			—
		12			7			6		Other nonoperating income, net
Tax effect		(3	)		(1	)		(2	)	Income tax expense
Total	$	9		$	6		$	4

Earnings Per Common Share

The following table reconciles the denominator for basic and diluted earnings from continuing operations per common share:


years ended December 31 (in millions)	2025		2024		2023

Basic weighted-average common shares outstanding		60.5		61.4		61.9
Effect of dilutive employee and director awards		0.1		0.2		0.2
Diluted weighted-average common shares outstanding		60.6		61.6		62.1

Reclassifications

New Accounting Pronouncements

Leases (Tables)

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Summary of Components of Lease Cost

The components of lease cost are as follows:


years ended December 31 (in millions)	2025		2024		2023
Operating lease cost	$	79	$	74	$	72
Finance lease cost:
Amortization of right-of-use assets		21		20		15
Interest on lease liabilities		10		6		4
Variable lease cost		18		14		18
Short-term lease cost		50		46		44
Total lease cost	$	178	$	160	$	153

Summary of Balance Sheet Classifications of Operating and Finance Leases

The balance sheet classifications of operating and finance leases are as follows:


December 31 (in millions)	2025			2024
Operating leases:
Operating lease right-of-use assets	$	367		$	366

Current operating lease liabilities	$	62		$	55
Noncurrent operating lease liabilities		320			327
Total operating lease liabilities	$	382		$	382

Finance leases:
Property, plant and equipment	$	368		$	253
Accumulated depreciation		(79	)		(58	)
Property, plant and equipment, net	$	289		$	195

Other current liabilities	$	15		$	13
Other noncurrent liabilities		287			190
Total finance lease liabilities	$	302		$	203

Summary of Weighted-average Remaining Lease Terms and Discount Rates

Weighted-average remaining lease terms and discount rates are as follows:


December 31		2025		2024
Weighted-average remaining lease terms (years):
Operating leases	10.2		11.1
Finance leases	22.0		18.7

Weighted-average discount rates:
Operating leases	4.5%		4.6%
Finance leases	3.9%		3.3%

Summary of Future Lease Payments

Future lease payments as of December 31, 2025 are as follows:


	Operating			Finance
(in millions)	Leases			Leases
2026	$	80		$	28
2027		69			27
2028		58			29
2029		44			25
2030		36			25
Thereafter		208			345
Total lease payments		495			479
Less: imputed interest		(103	)		(165	)
Present value of lease payments		392			314
Less: leases classified as held for sale		(10	)		(12	)
Less: current lease obligations		(62	)		(15	)
Total long-term lease obligations	$	320		$	287

ITEM 1C – CYBERSECURITY