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Restructuring Expenses and Asset Impairments - Schedule of Pre-Tax Restructuring Expenses by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring expenses and asset impairments	$ 0.1	$ 3.0	$ 18.3	$ 5.4
Operating segments | HST
Restructuring Cost and Reserve [Line Items]
Restructuring expenses and asset impairments	0.0		12.1
Operating segments | FMT
Restructuring Cost and Reserve [Line Items]
Restructuring expenses and asset impairments	0.1		4.3
Operating segments | Fire & Safety/Diversified Products
Restructuring Cost and Reserve [Line Items]
Restructuring expenses and asset impairments	0.0		1.6
Corporate/Other
Restructuring Cost and Reserve [Line Items]
Restructuring expenses and asset impairments	$ 0.0		$ 0.3

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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