Segment Information - Reconciliation of Total Segment Profits to Consolidated Totals (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reconciliation [Abstract]
Goodwill impairment	$ (20.2)	$ 0.0	$ (20.2)	$ 0.0
Total asset impairment charges	0.0	(0.8)	0.0	(0.8)
Gain (loss) on disposition of property plant equipment	0.2	0.1	1.1	3.5
Net (income) loss attributable to noncontrolling interest	0.0	(0.1)	0.1	(0.1)
(Loss) income before income taxes	(13.7)	15.9	(9.0)	32.4
Corporate and Other
Segment Reconciliation [Abstract]
Corporate & Other operations	(9.8)	(11.8)	(21.8)	(19.7)
Total asset impairment charges	0.0	(0.8)	0.0	(0.8)
Gain (loss) on disposition of property plant equipment	0.0	0.1	0.0	0.1
Operating Segments
Segment Reconciliation [Abstract]
Corporate & Other operations	37.4	44.0	68.3	87.1
Transformation program	(11.1)	(7.6)	(17.4)	(14.8)
Restructuring and other related charges	(0.9)	(0.4)	(1.0)	(7.5)
Goodwill impairment	(20.2)	0.0	(20.2)	0.0
Total asset impairment charges	0.0	(0.8)	0.0	(0.8)
Gain (loss) on disposition of property plant equipment	0.2	0.1	1.1	3.5
Interest expense, net	(2.7)	(1.5)	(4.8)	(3.0)
Depreciation and amortization	(6.6)	(6.2)	(13.1)	(12.5)
Net (income) loss attributable to noncontrolling interest	$ 0.0	$ 0.1	$ (0.1)	$ 0.1