Strategic Transformation, Restructuring and Other Asset Gains and Charges - Restructuring and the Net Gain on Sale of Property and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring charges:
Workforce reductions	$ 0.9	$ 0.0	$ 0.9	$ 0.0
Costs associated with leadership change and overhead restructuring	0.0	0.3	0.0	7.3
Total restructuring related charges	0.9	0.4	1.0	7.5
Asset impairment charges:
Other impairment charges	0.0	0.8	0.0	0.8
Total asset impairment charges	0.0	0.8	0.0	0.8
Gain on sale of property and equipment, net:
Total gain on sale of property and equipment, net	(0.2)	(0.1)	(1.1)	(3.5)
Total gain on sale of property and equipment, net	(0.2)	(0.1)	(1.1)	(3.5)
Restructuring, other impairment and asset charges, net	0.7	1.1	(0.1)	4.8
Facility Closing | Enid Exit Plan
Restructuring charges:
Business exit costs	$ 0.0	$ 0.1	$ 0.1	$ 0.2