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Goodwill - Summary of Changes in Carrying Value of Goodwill by Reporting Segment (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 1,792,665
Acquisitions	139,394
Foreign Exchange	(902)
Ending Balance	1,931,157
Federal Solutions
Goodwill [Line Items]
Beginning Balance	1,686,901
Acquisitions	139,394
Foreign Exchange	0
Ending Balance	1,826,295
Critical Infrastructure
Goodwill [Line Items]
Beginning Balance	105,764
Acquisitions	0
Foreign Exchange	(902)
Ending Balance	$ 104,862

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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