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Business Combinations - Narratives (Details) - USD ($) $ in Millions					3 Months Ended
	Feb. 16, 2021	Dec. 23, 2020	Nov. 03, 2020	Oct. 13, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Business Acquisition
Payment for acquisition of businesses, net of cash acquired					$ 55.0	$ 0.0
Cash acquired from acquisition	$ 0.6
Goodwill					911.3		$ 865.9
Contingent consideration					20.9		20.1
Cryogenic Technologies
Business Acquisition
Voting percentage acquired	100.00%
Payment for acquisition of businesses, net of cash acquired	$ 55.0
Net assets acquired, excluding goodwill	2.9
Goodwill	52.1
Identifiable intangible assets	$ 1.8
SES
Business Acquisition
Net assets acquired, excluding goodwill		$ 13.4
Goodwill		24.0
Identifiable intangible assets		17.3
Payments for acquisition of business excluding working capital adjustments		20.0
Potential earn-out not to exceed amount		25.0
Contingent consideration		$ 16.9			17.6		16.9
BIG
Business Acquisition
Net assets acquired, excluding goodwill			$ 8.8
Goodwill			14.8
Decrease in estimated fair value of intangibles					0.7
Identifiable intangible assets			6.2
Payments for acquisition of business excluding working capital adjustments			20.0
Potential earn-out not to exceed amount			6.0
Contingent consideration			$ 3.2		3.3		$ 3.2
Alabama Trailers
Business Acquisition
Payments for acquisition of business excluding working capital adjustments				$ 10.0
Gain on bargain purchase				$ 5.0
Sustainable Energy Solutions And Blue In Green LLC | Minimum | Scenario, Plan
Business Acquisition
Contingent consideration					0.0
Sustainable Energy Solutions And Blue In Green LLC | Maximum | Scenario, Plan
Business Acquisition
Contingent consideration					$ 31.0

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