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Segment Information - Summary of Revenues by Business Lines (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Revenues	$ 1,356,486	$ 1,008,721	$ 2,529,952	$ 1,957,790
Federal Solution Segment
Segment Reporting Information [Line Items]
Revenues	762,797	537,556	1,397,343	1,029,185
Federal Solution Segment | Defense And Intelligence
Segment Reporting Information [Line Items]
Revenues	381,328	350,298	745,688	685,825
Federal Solution Segment | Engineered Systems
Segment Reporting Information [Line Items]
Revenues	381,469	187,258	651,655	343,360
Critical Infrastructure
Segment Reporting Information [Line Items]
Revenues	593,689	471,165	1,132,609	928,605
Critical Infrastructure | Connected Communities
Segment Reporting Information [Line Items]
Revenues	196,895	170,783	353,066	333,437
Critical Infrastructure | Mobility Solutions
Segment Reporting Information [Line Items]
Revenues	$ 396,794	$ 300,382	$ 779,543	$ 595,168

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Section 50
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