Divestitures and Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Sales		$ 349.3	$ 759.0
Cost of sales		262.9	567.3
Other costs and expenses		100.9	194.7
Loss from discontinued operations before income taxes		(14.5)	(3.0)
Income tax benefit		(1.3)	(0.7)
Loss from discontinued operations, net of tax	$ 0.0	(13.2)	(2.3)
Loss from sale of discontinued operations		187.6	0.0
Provision for income taxes		(45.0)	0.0
Loss from sale of discontinued operations, net of tax	0.0	142.6	0.0
Net loss from discontinued operations	$ 0.0	$ (155.8)	$ (2.3)