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REVENUE FROM CUSTOMERS - Schedule of Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenues	$ 689,019	$ 593,741	$ 1,734,436	$ 1,616,923
Road and Highway Builders, LLC
Disaggregation of Revenue [Line Items]
Revenues	63,560	72,188	168,327	184,599
Lump-Sum
Disaggregation of Revenue [Line Items]
Revenues	418,815	292,365	966,189	791,227
Fixed-Unit Price
Disaggregation of Revenue [Line Items]
Revenues	188,904	226,969	515,500	579,127
Residential and Other
Disaggregation of Revenue [Line Items]
Revenues	81,300	74,407	252,747	246,569
Transportation Solutions Revenues | Road and Highway Builders, LLC
Disaggregation of Revenue [Line Items]
Revenues		72,188		184,599
Transportation Solutions Revenues | Heavy Highway
Disaggregation of Revenue [Line Items]
Revenues	105,710	169,388	326,017	424,628
Transportation Solutions Revenues | Aviation
Disaggregation of Revenue [Line Items]
Revenues	18,855	22,964	46,163	63,738
Transportation Solutions Revenues | Other Services
Disaggregation of Revenue [Line Items]
Revenues	45,925	34,899	115,768	120,629
Building Solutions Revenues | Residential
Disaggregation of Revenue [Line Items]
Revenues	80,529	70,374	249,107	238,825
Building Solutions Revenues | Commercial
Disaggregation of Revenue [Line Items]
Revenues	20,894	32,217	51,606	79,416
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues			1,734,436
Operating Segments | E-Infrastructure Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	417,106	263,899	945,775	689,687
Operating Segments | Transportation Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	170,490	227,251	487,948	608,995
Operating Segments | Building Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 101,423	$ 102,591	$ 300,713	$ 318,241

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