Reportable Segments - Product Sales Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information
Sales to external customers	$ 322.0	$ 289.5	$ 610.5	$ 591.4
North America
Segment Reporting Information
Sales to external customers	148.4	168.3	289.2	346.8
Europe, Middle East, Africa and India
Segment Reporting Information
Sales to external customers	103.2	71.6	203.8	147.0
Asia-Pacific
Segment Reporting Information
Sales to external customers	67.9	48.2	113.7	92.6
Rest of the World
Segment Reporting Information
Sales to external customers	2.5	1.4	3.8	5.0
Operating Segments | Cryo Tank Solutions
Segment Reporting Information
Sales to external customers	97.8	105.3	201.7	203.3
Operating Segments | Cryo Tank Solutions | North America
Segment Reporting Information
Sales to external customers	34.4	43.7	75.5	84.3
Operating Segments | Cryo Tank Solutions | Europe, Middle East, Africa and India
Segment Reporting Information
Sales to external customers	32.7	32.2	70.4	66.5
Operating Segments | Cryo Tank Solutions | Asia-Pacific
Segment Reporting Information
Sales to external customers	29.1	28.4	53.3	48.5
Operating Segments | Cryo Tank Solutions | Rest of the World
Segment Reporting Information
Sales to external customers	1.6	1.0	2.5	4.0
Operating Segments | Heat Transfer Systems
Segment Reporting Information
Sales to external customers	65.2	97.3	134.4	210.2
Operating Segments | Heat Transfer Systems | North America
Segment Reporting Information
Sales to external customers	42.2	71.1	88.5	153.3
Operating Segments | Heat Transfer Systems | Europe, Middle East, Africa and India
Segment Reporting Information
Sales to external customers	8.8	10.2	16.6	19.7
Operating Segments | Heat Transfer Systems | Asia-Pacific
Segment Reporting Information
Sales to external customers	14.0	15.8	28.8	36.7
Operating Segments | Heat Transfer Systems | Rest of the World
Segment Reporting Information
Sales to external customers	0.2	0.2	0.5	0.5
Operating Segments | Specialty Products
Segment Reporting Information
Sales to external customers	106.8	48.6	184.1	101.5
Operating Segments | Specialty Products | North America
Segment Reporting Information
Sales to external customers	43.3	26.1	69.4	51.0
Operating Segments | Specialty Products | Europe, Middle East, Africa and India
Segment Reporting Information
Sales to external customers	53.3	19.9	98.9	45.5
Operating Segments | Specialty Products | Asia-Pacific
Segment Reporting Information
Sales to external customers	9.6	2.5	15.2	4.7
Operating Segments | Specialty Products | Rest of the World
Segment Reporting Information
Sales to external customers	0.6	0.1	0.6	0.3
Operating Segments | Repair, Service & Leasing
Segment Reporting Information
Sales to external customers	54.6	40.1	96.0	80.8
Operating Segments | Repair, Service & Leasing | North America
Segment Reporting Information
Sales to external customers	29.5	28.3	58.5	60.4
Operating Segments | Repair, Service & Leasing | Europe, Middle East, Africa and India
Segment Reporting Information
Sales to external customers	9.1	9.8	19.6	16.5
Operating Segments | Repair, Service & Leasing | Asia-Pacific
Segment Reporting Information
Sales to external customers	15.9	1.9	17.7	3.6
Operating Segments | Repair, Service & Leasing | Rest of the World
Segment Reporting Information
Sales to external customers	0.1	0.1	0.2	0.3
Intersegment Eliminations
Segment Reporting Information
Sales to external customers	(2.4)	(1.8)	(5.7)	(4.4)
Intersegment Eliminations | North America
Segment Reporting Information
Sales to external customers	(1.0)	(0.9)	(2.7)	(2.2)
Intersegment Eliminations | Europe, Middle East, Africa and India
Segment Reporting Information
Sales to external customers	(0.7)	(0.5)	(1.7)	(1.2)
Intersegment Eliminations | Asia-Pacific
Segment Reporting Information
Sales to external customers	(0.7)	(0.4)	(1.3)	(0.9)
Intersegment Eliminations | Rest of the World
Segment Reporting Information
Sales to external customers	$ 0.0	$ 0.0	$ 0.0	$ (0.1)