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Goodwill - Changes in the Net Carrying Amount of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 151.1
Additions to Goodwill	221.5
Impairment Adjustments	0.0
Goodwill, ending balance	372.6
Science, Engineering & Technology
Goodwill [Roll Forward]
Goodwill, beginning balance	111.3
Additions to Goodwill	221.5
Impairment Adjustments	0.0
Goodwill, ending balance	332.8
Education
Goodwill [Roll Forward]
Goodwill, beginning balance	39.8
Additions to Goodwill	0.0
Impairment Adjustments	0.0
Goodwill, ending balance	$ 39.8

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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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of impairment loss from 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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