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Contracts with Customers - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenues	$ 4,195,272	$ 3,660,771	$ 3,918,946
Cost-Plus
Disaggregation Of Revenue [Line Items]
Revenues	1,890,242	1,674,276	1,631,140
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenues	1,166,548	1,021,568	1,034,596
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,138,482	$ 964,927	$ 1,253,210

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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.

+ References

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-Publisher FASB
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