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Restructuring Activities - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Reserve
Beginning balance, restructuring accrual	$ 0.8	$ 0.9
Restructuring charges	0.7	5.2
Cash payments and other	(1.0)	(3.3)
Ending balance, restructuring accrual	0.5	2.8
Operating Segments | Cryo Tank Solutions
Restructuring Reserve
Beginning balance, restructuring accrual	0.5	0.5
Restructuring charges	0.3	1.8
Cash payments and other	(0.3)	(0.8)
Ending balance, restructuring accrual	0.5	1.5
Operating Segments | Heat Transfer Systems
Restructuring Reserve
Beginning balance, restructuring accrual	0.2	0.2
Restructuring charges	0.4	2.8
Cash payments and other	(0.6)	(2.5)
Ending balance, restructuring accrual	0.0	0.5
Operating Segments | Specialty Products
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
Operating Segments | Repair, Service & Leasing
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
Corporate
Restructuring Reserve
Beginning balance, restructuring accrual	0.1	0.2
Restructuring charges	0.0	0.6
Cash payments and other	(0.1)	0.0
Ending balance, restructuring accrual	$ 0.0	$ 0.8

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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