Contracts with Customers - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,670,467	$ 1,356,486	$ 3,206,143	$ 2,529,952
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenues	707,235	440,094	1,338,454	781,106
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenues	347,275	324,033	697,926	642,348
Cost-Plus
Disaggregation Of Revenue [Line Items]
Revenues	$ 615,957	$ 592,359	$ 1,169,763	$ 1,106,498