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Acquisitions, Discontinued Operations, and the Asbestos Portfolio Sale - Wind-Down of DBT - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposition of discontinued operations, net of tax		$ (19.6)	$ 360.7	$ (3.7)
DBT | Discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposition of discontinued operations, net of tax	$ 19.9		$ (19.9)

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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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