Goodwill and Intangible Assets - Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2021 USD ($)
Goodwill
Beginning balance, goodwill	$ 865.9
Goodwill acquired during the period	34.5
Foreign currency translation adjustments and other	(5.2)
Purchase price adjustments	0.9
Ending balance, goodwill	896.1
Cryo Tank Solutions
Goodwill
Beginning balance, goodwill	93.2
Goodwill acquired during the period	0.0
Foreign currency translation adjustments and other	(3.4)
Purchase price adjustments	0.0
Ending balance, goodwill	89.8
Heat Transfer Systems
Goodwill
Beginning balance, goodwill	435.2
Goodwill acquired during the period	0.0
Foreign currency translation adjustments and other	(1.9)
Purchase price adjustments	0.0
Ending balance, goodwill	433.3
Specialty Products
Goodwill
Beginning balance, goodwill	172.4
Goodwill acquired during the period	34.5
Foreign currency translation adjustments and other	0.1
Purchase price adjustments	0.9
Ending balance, goodwill	207.9
Repair, Service & Leasing
Goodwill
Beginning balance, goodwill	165.1
Goodwill acquired during the period	0.0
Foreign currency translation adjustments and other	0.0
Purchase price adjustments	0.0
Ending balance, goodwill	$ 165.1

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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