Contracts with Customers - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,173,466	$ 949,069
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenues	341,012	240,574
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenues	318,315	263,315
Cost-Plus
Disaggregation Of Revenue [Line Items]
Revenues	$ 514,139	$ 445,180