Goodwill and Intangible Assets - Carrying Value of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2026	Sep. 30, 2026
Goodwill [Roll Forward]
Beginning balance		$ 193.8
Goodwill impairment		(47.2)
Ending balance		146.6
DWS
Goodwill [Roll Forward]
Beginning balance		47.2
Goodwill impairment	$ (47.2)	(47.2)
Ending balance		0.0
CA&I
Goodwill [Roll Forward]
Beginning balance		54.5
Goodwill impairment		0.0
Ending balance		54.5
ECS
Goodwill [Roll Forward]
Beginning balance		92.1
Goodwill impairment		0.0
Ending balance		$ 92.1

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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+ Details

- Definition

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.

+ References + Details