Segment Information - Summary of Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 1,535,676	$ 1,173,466
Total equity in (losses) earnings of unconsolidated joint ventures	(2,060)	(5,840)
Federal Solution Segment
Segment Reporting Information [Line Items]
Total revenue	909,608	634,546
Total equity in (losses) earnings of unconsolidated joint ventures	(469)	1,112
Critical Infrastructure
Segment Reporting Information [Line Items]
Total revenue	626,068	538,920
Total equity in (losses) earnings of unconsolidated joint ventures	$ (1,591)	$ (6,952)