Goodwill and Intangible Assets - Goodwill Rollforward (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Goodwill
Beginning balance, goodwill	$ 992.0
Foreign currency translation adjustments and other	1.4
Divestiture of Roots	(102.2)
Purchase price adjustments	0.2
Ending balance, goodwill	2,827.8
Goodwill Impaired
Beginning Balance, accumulated goodwill impairment loss	129.0
Ending Balance, accumulated goodwill impairment loss	129.0
Howden Industries
Goodwill
Goodwill acquired during the period	1,936.4
Ending balance, goodwill	1,936.4
Cryo Tank Solutions
Goodwill
Beginning balance, goodwill	79.1
Goodwill acquired during the period	185.7
Foreign currency translation adjustments and other	(3.6)
Divestiture of Roots	(66.7)
Purchase price adjustments	0.0
Ending balance, goodwill	194.5
Goodwill Impaired
Beginning Balance, accumulated goodwill impairment loss	23.5
Ending Balance, accumulated goodwill impairment loss	23.5
Heat Transfer Systems
Goodwill
Beginning balance, goodwill	430.5
Goodwill acquired during the period	27.2
Foreign currency translation adjustments and other	(4.1)
Divestiture of Roots	0.0
Purchase price adjustments	0.0
Ending balance, goodwill	453.6
Goodwill Impaired
Beginning Balance, accumulated goodwill impairment loss	49.3
Ending Balance, accumulated goodwill impairment loss	49.3
Specialty Products
Goodwill
Beginning balance, goodwill	304.0
Goodwill acquired during the period	264.9
Foreign currency translation adjustments and other	(11.2)
Divestiture of Roots	(1.5)
Purchase price adjustments	(0.1)
Ending balance, goodwill	556.1
Goodwill Impaired
Beginning Balance, accumulated goodwill impairment loss	35.8
Ending Balance, accumulated goodwill impairment loss	35.8
Repair, Service & Leasing
Goodwill
Beginning balance, goodwill	178.4
Goodwill acquired during the period	1,458.6
Foreign currency translation adjustments and other	20.3
Divestiture of Roots	(34.0)
Purchase price adjustments	0.3
Ending balance, goodwill	1,623.6
Goodwill Impaired
Beginning Balance, accumulated goodwill impairment loss	20.4
Ending Balance, accumulated goodwill impairment loss	$ 20.4