Restructuring Activities - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Reserve
Beginning balance, restructuring accrual	$ 0.2	$ 2.3
Restructuring charges	1.6	0.1
Cash payments and other	(1.1)	(0.9)
Ending balance, restructuring accrual	0.7	1.5
Operating Segments | Cryo Tank Solutions
Restructuring Reserve
Beginning balance, restructuring accrual	0.1	0.4
Restructuring charges	0.8	0.0
Cash payments and other	(0.8)	(0.3)
Ending balance, restructuring accrual	0.1	0.1
Operating Segments | Heat Transfer Systems
Restructuring Reserve
Beginning balance, restructuring accrual	0.0	0.5
Restructuring charges	0.0	0.1
Cash payments and other	0.0	(0.6)
Ending balance, restructuring accrual	0.0	0.0
Operating Segments | Specialty Products
Restructuring Reserve
Beginning balance, restructuring accrual	0.1	0.0
Restructuring charges	0.0	0.0
Cash payments and other	(0.1)	0.0
Ending balance, restructuring accrual	0.0	0.0
Operating Segments | Repair, Service & Leasing
Restructuring Reserve
Beginning balance, restructuring accrual	0.0	1.4
Restructuring charges	0.8	0.0
Cash payments and other	(0.2)	0.0
Ending balance, restructuring accrual	0.6	1.4
Corporate
Restructuring Reserve
Beginning balance, restructuring accrual	0.0	0.0
Restructuring charges	0.0	0.0
Cash payments and other	0.0	0.0
Ending balance, restructuring accrual	$ 0.0	$ 0.0