Segment and Geographic Information - Product Sales Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information
Sales	$ 312.4	$ 273.2	$ 289.6	$ 301.9	$ 321.4	$ 338.0	$ 287.1	$ 269.0	$ 1,177.1	$ 1,215.5	$ 1,003.9
North America
Segment Reporting Information
Sales									633.1	710.2	623.2
Europe, Middle East, Africa and India
Segment Reporting Information
Sales									361.0	348.1	238.4
Asia Pacific
Segment Reporting Information
Sales									173.8	148.9	136.1
Rest of the World
Segment Reporting Information
Sales									9.2	8.3	6.2
Operating Segments | Cryo Tank Solutions
Segment Reporting Information
Sales									415.8	409.9	371.4
Operating Segments | Cryo Tank Solutions | North America
Segment Reporting Information
Sales									168.0	173.6	164.0
Operating Segments | Cryo Tank Solutions | Europe, Middle East, Africa and India
Segment Reporting Information
Sales									165.3	163.8	120.0
Operating Segments | Cryo Tank Solutions | Asia Pacific
Segment Reporting Information
Sales									76.1	67.2	83.8
Operating Segments | Cryo Tank Solutions | Rest of the World
Segment Reporting Information
Sales									6.4	5.3	3.6
Operating Segments | Heat Transfer Systems
Segment Reporting Information
Sales									369.8	441.7	289.8
Operating Segments | Heat Transfer Systems | North America
Segment Reporting Information
Sales									259.4	311.2	237.1
Operating Segments | Heat Transfer Systems | Europe, Middle East, Africa and India
Segment Reporting Information
Sales									39.3	71.6	24.1
Operating Segments | Heat Transfer Systems | Asia Pacific
Segment Reporting Information
Sales									69.3	57.3	27.2
Operating Segments | Heat Transfer Systems | Rest of the World
Segment Reporting Information
Sales									1.8	1.6	1.4
Operating Segments | Repair, Service & Leasing
Segment Reporting Information
Sales									158.3	162.6	160.4
Operating Segments | Repair, Service & Leasing | North America
Segment Reporting Information
Sales									111.2	128.4	122.6
Operating Segments | Repair, Service & Leasing | Europe, Middle East, Africa and India
Segment Reporting Information
Sales									38.1	23.7	30.0
Operating Segments | Repair, Service & Leasing | Asia Pacific
Segment Reporting Information
Sales									8.4	9.7	7.1
Operating Segments | Repair, Service & Leasing | Rest of the World
Segment Reporting Information
Sales									0.6	0.8	0.7
Operating Segments | Specialty Products
Segment Reporting Information
Sales									242.6	207.9	184.5
Operating Segments | Specialty Products | North America
Segment Reporting Information
Sales									98.9	100.4	100.5
Operating Segments | Specialty Products | Europe, Middle East, Africa and India
Segment Reporting Information
Sales									121.8	91.2	65.2
Operating Segments | Specialty Products | Asia Pacific
Segment Reporting Information
Sales									21.4	15.6	18.3
Operating Segments | Specialty Products | Rest of the World
Segment Reporting Information
Sales									0.5	0.7	0.5
Intersegment Eliminations
Segment Reporting Information
Sales									(9.4)	(6.6)	(2.2)
Intersegment Eliminations | North America
Segment Reporting Information
Sales									(4.4)	(3.4)	(1.0)
Intersegment Eliminations | Europe, Middle East, Africa and India
Segment Reporting Information
Sales									(3.5)	(2.2)	(0.9)
Intersegment Eliminations | Asia Pacific
Segment Reporting Information
Sales									(1.4)	(0.9)	(0.3)
Intersegment Eliminations | Rest of the World
Segment Reporting Information
Sales									$ (0.1)	$ (0.1)	$ 0.0