Restructuring Activities - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring Reserve
Beginning balance, restructuring accrual	$ 3.8	$ 1.4	$ 0.2	$ 2.3
Restructuring charges	4.2	(1.4)	11.2	(1.1)
Cash payments and other	(5.6)		(9.0)	(0.9)
Cash payments and other		0.3
Ending balance, restructuring accrual	2.4	0.3	2.4	0.3
Operating Segments | Cryo Tank Solutions
Restructuring Reserve
Restructuring charges	0.1	0.0	1.2	0.1
Operating Segments | Heat Transfer Systems
Restructuring Reserve
Restructuring charges	0.5	0.0	0.7	0.1
Operating Segments | Specialty Products
Restructuring Reserve
Restructuring charges	0.4	(0.1)	0.9	0.0
Operating Segments | Repair, Service & Leasing
Restructuring Reserve
Restructuring charges	0.9	(1.3)	2.4	(1.3)
Corporate
Restructuring Reserve
Restructuring charges	$ 2.3	$ 0.0	$ 6.0	$ 0.0