Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 477.7
Goodwill	35.2
Translation adjustments	4.7
Goodwill, ending balance	517.6
Environmental Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	368.8
Goodwill	35.2
Translation adjustments	0.6
Goodwill, ending balance	404.6
Safety and Security Systems
Goodwill [Roll Forward]
Goodwill, beginning balance	108.9
Goodwill	0.0
Translation adjustments	4.1
Goodwill, ending balance	$ 113.0

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