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Segment information
 3 Months Ended
Mar. 31, 2025
Segment Reporting [Abstract]  
Segment information
13. Segment information
The Company has the following three operating and reportable segments:
Americas Materials Solutions;
Americas Building Solutions; and
International Solutions
The Americas Materials Solutions segment provides solutions for the construction and maintenance of public infrastructure, commercial and residential buildings in North America. The primary materials produced by this segment include aggregates, cement, readymixed concrete and asphalt. This segment also provides paving and construction services for customers.
The Americas Building Solutions segment manufactures, supplies and delivers solutions for the built environment in communities across North America. Our subsidiaries within this segment offer building and infrastructure solutions serving complex critical infrastructure (such as water, energy, transportation and telecommunications projects) and outdoor living solutions for enhancing private and public spaces.
The International Solutions segment provides integrated building solutions across Europe and Australia. The business integrates materials, products, and services to provide complete building solutions for use in the construction and renovation of critical infrastructure, commercial and residential buildings and outdoor living spaces.
Adjusted EBITDA is defined as earnings from continuing operations before interest, taxes, depreciation, depletion, amortization, loss on impairments, gain/loss on divestitures and gain/loss on investments, income/loss from equity method investments, substantial acquisition-related costs and pension expense/income excluding current service cost component.
The key performance measures and segment expenses for the Company’s reportable segments were:
Three months ended March 31, 2025
in $ millionsAmericas Materials SolutionsAmericas Building SolutionsInternational SolutionsTotal
Revenue2,2431,6822,8316,756
Less:
    Labor7543756571,786
    Energy costs 14032220392
    Other segment items (i)1,2909881,8054,083
Adjusted EBITDA59287149495

Three months ended March 31, 2024
in $ millionsAmericas Materials SolutionsAmericas Building SolutionsInternational SolutionsTotal
Revenue2,2021,6932,6386,533
Less:
    Labor7083575821,647
    Energy costs 13632226394
    Other segment items (i)1,3439961,7084,047
Adjusted EBITDA15308122445
(i)    The nature of other segment items is similar for each segment and primarily includes raw materials, haulage costs, subcontractor costs and other Selling, general and administrative expenses. As a result of our integrated building solutions model, the composition of other segment items is such that at a segment level none of these items is individually significant in determining segment performance.

Three months ended
March 31
in $ millions20252024
Adjusted EBITDA495445
Depreciation, depletion and amortization(477)(397)
Interest income3743
Interest expense(181)(133)
(Loss) gain on divestitures and investments (i)(26)160
Pension income excluding current service cost component (i)41
Other interest, net (i)2–
Substantial acquisition-related costs–(20)
(Loss) income from operations before income tax expense and income from equity method investments(146)99
(i)    (Loss) gain on divestitures and investments, pension income excluding current service cost component and other interest, net have been included in Other nonoperating (expense) income, net in the Condensed Consolidated Statements of Income.
Depreciation, depletion and amortization for each of the segments were:
Three months ended
March 31
in $ millions20252024
Americas Materials Solutions220190
Americas Building Solutions9180
International Solutions166 127 
Total depreciation, depletion and amortization477 397 

The segment assets were:
March 31December 31March 31
in $ millions202520242024
Assets
Americas Materials Solutions21,71521,47419,860
Americas Building Solutions9,7869,0498,821
International Solutions15,79315,01112,988
Total assets for reportable segments47,29445,53441,669

Additions to property, plant and equipment and intangible assets for each of the segments were:
Three months ended
March 31
in $ millions20252024
Property, plant and equipment and intangible asset additions (i)
Americas Materials Solutions240229
Americas Building Solutions199124
International Solutions244170
Total property, plant and equipment and intangible asset additions683523
(i)     Property, plant and equipment and intangible asset additions exclude asset retirement cost additions.