Segment and Geographic Information - Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Oct. 01, 2020	Sep. 30, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets
Assets	$ 3,043.8	$ 2,570.5
Goodwill	994.6	865.9	$ 817.6	$ 817.6	$ 811.4
Identifiable intangible assets, net	556.1	493.1
Cryo Tank Solutions
Revenues from External Customers and Long-Lived Assets
Goodwill	84.9	93.2	86.5
Heat Transfer Systems
Revenues from External Customers and Long-Lived Assets
Goodwill	433.6	435.2	432.6
Specialty Products
Revenues from External Customers and Long-Lived Assets
Goodwill	300.9	172.4	133.8
Repair, Service & Leasing
Revenues from External Customers and Long-Lived Assets
Goodwill	175.2	165.1	$ 164.7
Operating Segments
Revenues from External Customers and Long-Lived Assets
Assets	1,146.7	967.3
Operating Segments | Cryo Tank Solutions
Revenues from External Customers and Long-Lived Assets
Assets	407.2	399.2
Operating Segments | Heat Transfer Systems
Revenues from External Customers and Long-Lived Assets
Assets	225.8	247.2
Operating Segments | Specialty Products
Revenues from External Customers and Long-Lived Assets
Assets	327.5	178.3
Operating Segments | Repair, Service & Leasing
Revenues from External Customers and Long-Lived Assets
Assets	186.2	142.6
Corporate
Revenues from External Customers and Long-Lived Assets
Assets	$ 346.4	$ 244.2