Reportable Segments - Segment Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information
Sales	$ 897.9	$ 412.1	$ 2,337.5	$ 1,171.0
Depreciation and amortization expense	67.0	20.2	163.2	62.4
Operating income (loss)	104.4	41.7	234.7	91.4
Restructuring costs	4.2	(1.4)	11.2	(1.1)
Sustainable Energy Solutions, Inc. (“SES”) and BlueInGreen, LLC (“BIG”)
Segment Reporting Information
Change in acquisition-related contingent consideration	(2.3)	(1.7)	(8.8)	(2.7)
Operating Segments | Cryo Tank Solutions
Segment Reporting Information
Sales	159.0	126.9	435.2	377.9
Depreciation and amortization expense	7.8	4.0	17.2	12.2
Operating income (loss)	17.1	12.2	31.9	36.2
Restructuring costs	0.1	0.0	1.2	0.1
Operating Segments | Heat Transfer Systems
Segment Reporting Information
Sales	232.5	132.1	636.0	314.3
Depreciation and amortization expense	7.4	7.2	24.6	22.3
Operating income (loss)	43.4	18.3	120.5	23.8
Restructuring costs	0.5	0.0	0.7	0.1
Operating Segments | Specialty Products
Segment Reporting Information
Sales	240.0	108.1	602.9	330.9
Depreciation and amortization expense	5.7	4.3	17.9	13.6
Operating income (loss)	33.7	16.7	84.6	53.7
Restructuring costs	0.4	(0.1)	0.9	0.0
Operating Segments | Repair, Service & Leasing
Segment Reporting Information
Sales	271.3	49.7	688.5	154.4
Depreciation and amortization expense	45.1	4.2	100.8	12.7
Operating income (loss)	42.3	12.0	121.0	32.3
Restructuring costs	0.9	(1.3)	2.4	(1.3)
Intersegment Eliminations
Segment Reporting Information
Sales	(4.9)	(4.7)	(25.1)	(6.5)
Depreciation and amortization expense	0.0	0.0	0.0	0.0
Operating income (loss)	0.0	0.0	0.0	0.0
Corporate
Segment Reporting Information
Sales	0.0	0.0	0.0	0.0
Depreciation and amortization expense	1.0	0.5	2.7	1.6
Operating income (loss)	(32.1)	(17.5)	(123.3)	(54.6)
Restructuring costs	$ 2.3	$ 0.0	$ 6.0	$ 0.0