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Contracts with Customers - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,356,486	$ 1,008,721	$ 2,529,952	$ 1,957,790
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenues	440,094	279,408	781,106	519,982
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenues	324,033	271,330	642,348	534,645
Cost-Plus
Disaggregation Of Revenue [Line Items]
Revenues	$ 592,359	$ 457,983	$ 1,106,498	$ 903,163

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