Contracts with Customers - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,491,176	$ 1,554,360
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenues	470,903	574,573
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenues	372,845	347,090
Cost-Plus
Disaggregation Of Revenue [Line Items]
Revenues	$ 647,428	$ 632,697

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details