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Discontinued Operations and Other Businesses Sold - Income from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Summarized Financial Information of Discontinued Operations
(Loss) income from discontinued operations, net of tax	$ (2.2)	$ 0.9
Assets disposed of by sales
Summarized Financial Information of Discontinued Operations
Sales	0.0	6.4
Cost of sales	0.0	4.2
Gross profit	0.0	2.2
Selling, general and administrative expenses	0.2	1.0
Operating (loss) income	(0.2)	1.2
(Loss) income before income taxes	(0.2)	1.2
Income tax expense	0.0	0.3
(Loss) income from discontinued operations before loss on sale of business	(0.2)	0.9
Loss on sale of business, net of $0.5 of taxes	2.0	0.0
(Loss) income from discontinued operations, net of tax	(2.2)	$ 0.9
Tax on loss on sale of business	$ 0.5

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