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REVENUE FROM CUSTOMERS
 6 Months Ended
Jun. 30, 2026
Revenue from Contract with Customer [Abstract]  
REVENUE FROM CUSTOMERS
4.REVENUE FROM CUSTOMERS
Remaining Performance Obligations (“RPOs”)—RPOs represent the aggregate amount of our contract transaction price related to performance obligations that are unsatisfied or partially satisfied at the end of the period. RPOs include the entire expected revenue values for joint ventures we consolidate and our proportionate value for those we proportionately consolidate. RPOs may not be indicative of future operating results. Projects included in RPOs may be canceled or modified by customers; however, the customer would be obligated to compensate the Company for work performed through the date of termination and for any applicable contractual costs for cancellations or modifications. The following table presents the Company’s RPOs, by segment:
(In thousands)June 30, 2026December 31, 2025
E-Infrastructure Solutions RPOs$3,210,035 $1,843,536 
Transportation Solutions RPOs968,675 1,124,429 
Building Solutions RPOs - Commercial54,908 42,977 
Total RPOs$4,233,618 $3,010,942 
At June 30, 2026, the Company expects to recognize approximately 74% of its RPOs as revenue during the next 12 months, and substantially all of the remaining balance in the 12 to 24 months thereafter.
Revenue Disaggregation—The following tables present the Company’s revenue disaggregated by major end market and contract type:
(In thousands)Three Months Ended June 30,Six Months Ended June 30,
Revenues by major end market2026202520262025
E-Infrastructure Solutions Revenues$905,001 $310,406 $1,502,733 $528,669 
Heavy Highway112,681 133,109 202,953 220,307 
Aviation22,770 15,797 43,952 27,308 
Other Services
21,241 47,891 42,650 69,843 
Transportation Solutions Revenues156,692 196,797 289,555 317,458 
Residential89,748 91,812 168,525 168,578 
Commercial16,738 15,453 33,041 30,712 
Building Solutions Revenues106,486 107,265 201,566 199,290 
Total Revenues$1,168,179 $614,468 $1,993,854 $1,045,417 
Revenues by contract type
Lump-Sum$741,426 $323,186 $1,275,360 $547,374 
Fixed-Unit Price257,339 200,034 457,116 326,596 
Residential and Other169,414 91,248 261,378 171,447 
Total Revenues$1,168,179 $614,468 $1,993,854 $1,045,417 
Variable Consideration
The Company has projects that it is in the process of negotiating, or awaiting final approval of, unapproved change orders and claims with its customers. The Company is proceeding with its contractual rights to recoup additional costs incurred from its customers based on completing work associated with change orders, including change orders with pending change order pricing, or claims related to significant changes in scope which resulted in substantial delays and additional costs in completing the work. Unapproved change order and claim information has been provided to the Company’s customers and negotiations with the customers are ongoing. If additional progress with an acceptable resolution is not reached, legal action will be taken. Based upon the Company’s review of the provisions of its contracts, specific costs incurred and other related evidence supporting the unapproved change orders and claims, together in some cases as necessary with the views of the Company’s outside claim consultants, the Company concluded it was appropriate to include in project price amounts of $2.9 million, at both June 30, 2026 and December 31, 2025, relating to unapproved change orders and claims. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses are determined.
Contract Estimates
Accounting for long-term contracts and programs involves the use of various techniques to estimate total contract revenue and costs. For long-term contracts, the Company estimates the profit on a contract as the difference between the total estimated revenue and expected costs to complete a contract and recognizes such profit over the life of the contract. Contract estimates are based on various assumptions to project the outcome of future events that often span several years. These assumptions include labor productivity and availability, the complexity of the work to be performed, the cost and availability of materials and the performance of subcontractors. Changes in job performance, job conditions and estimated profitability, including those changes arising from contract penalty provisions and final contract settlements, may result in changes in revenue and are recognized in the period in which the changes are determined. Changes in contract estimates on performance obligations satisfied or partially satisfied in previous periods resulted in net revenue increases of $83.1 million and $138.9 million for the three and six months ended June 30, 2026, respectively, and net revenue increases of $42.0 million and $72.5 million for the three and six months ended June 30, 2025, respectively.