Restructuring Activities - Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Reserve
Restructuring reserve, beginning balance	$ 0.2	$ 2.3	$ 0.8
Restructuring costs	13.5	(1.0)	3.5
Cash payments and other	(11.8)	(1.1)	(2.0)
Restructuring reserve, ending balance	1.9	0.2	2.3
Repair, Service & Leasing
Restructuring Reserve
Restructuring costs	4.0	(1.4)
Operating Segments | Cryo Tank Solutions
Restructuring Reserve
Restructuring costs	1.6	0.1	0.3
Operating Segments | Heat Transfer Systems
Restructuring Reserve
Restructuring costs	0.9	0.3	1.7
Operating Segments | Repair, Service & Leasing
Restructuring Reserve
Restructuring costs	4.0	(1.4)	1.5
Operating Segments | Specialty Products
Restructuring Reserve
Restructuring costs	1.8	0.0	0.0
Corporate
Restructuring Reserve
Restructuring costs	$ 5.2	$ 0.0	$ 0.0