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Goodwill - Summary of Changes in Carrying Value of Goodwill by Reporting Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 2,082,680
Acquisitions	24,118
Foreign Exchange	274
Ending Balance	2,107,072
Federal Solutions
Goodwill [Line Items]
Beginning Balance	1,806,564
Acquisitions	0
Foreign Exchange	0
Ending Balance	1,806,564
Critical Infrastructure
Goodwill [Line Items]
Beginning Balance	276,116
Acquisitions	24,118
Foreign Exchange	274
Ending Balance	$ 300,508

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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