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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 477.7
Goodwill	40.1
Translation adjustments	3.9
Goodwill, ending balance	521.7
Environmental Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	368.8
Goodwill	40.1
Translation adjustments	0.0
Goodwill, ending balance	408.9
Safety and Security Systems
Goodwill [Roll Forward]
Goodwill, beginning balance	108.9
Goodwill	0.0
Translation adjustments	3.9
Goodwill, ending balance	$ 112.8

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 foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit 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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