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REVENUE FROM CUSTOMERS - Schedule of Backlog by Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Total RPOs	$ 2,575,370	$ 1,693,223
E-Infrastructure Solutions RPOs | Continuing Operations
Disaggregation of Revenue [Line Items]
Total RPOs	1,808,220	1,032,109
Transportation Solutions RPOs | Continuing Operations
Disaggregation of Revenue [Line Items]
Total RPOs	733,432	622,085
Building Solutions RPOs - Commercial | Continuing Operations
Disaggregation of Revenue [Line Items]
Total RPOs	$ 33,718	$ 39,029

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