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Restructuring Activities - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve
Beginning balance, restructuring accrual	$ 2.3	$ 0.8
Restructuring charges	0.1	0.7
Cash payments and other	(0.9)	(1.0)
Ending balance, restructuring accrual	1.5	0.5
Heat Transfer Systems
Restructuring Reserve
Restructuring charges	0.1
Operating Segments | Cryo Tank Solutions
Restructuring Reserve
Beginning balance, restructuring accrual	0.4	0.5
Restructuring charges	0.0	0.3
Cash payments and other	(0.3)	(0.3)
Ending balance, restructuring accrual	0.1	0.5
Operating Segments | Heat Transfer Systems
Restructuring Reserve
Beginning balance, restructuring accrual	0.5	0.2
Restructuring charges	0.1	0.4
Cash payments and other	(0.6)	(0.6)
Ending balance, restructuring accrual	0.0	0.0
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	1.4	0.0
Restructuring charges	0.0	0.0
Cash payments and other	0.0	0.0
Ending balance, restructuring accrual	1.4	0.0
Corporate
Restructuring Reserve
Beginning balance, restructuring accrual	0.0	0.1
Restructuring charges	0.0	0.0
Cash payments and other	0.0	(0.1)
Ending balance, restructuring accrual	$ 0.0	$ 0.0

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109237686&loc=d3e17752-110868

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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-Section S99
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
-Subparagraph (b)
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(1))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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- Definition

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+ References

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