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Goodwill and Intangible Assets - Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Goodwill
Beginning Balance, Goodwill	$ 844.9
Foreign currency translation adjustments	(3.7)
Ending Balance, Goodwill	841.2
Beginning Balance, Accumulated goodwill impairment loss	147.1
Ending Balance, Accumulated goodwill impairment loss	147.1
D&S East
Goodwill
Beginning Balance, Goodwill	117.0
Foreign currency translation adjustments	(2.4)
Ending Balance, Goodwill	114.6
Beginning Balance, Accumulated goodwill impairment loss	0.0
Ending Balance, Accumulated goodwill impairment loss	0.0
D&S West
Goodwill
Beginning Balance, Goodwill	152.1
Foreign currency translation adjustments	0.0
Ending Balance, Goodwill	152.1
Beginning Balance, Accumulated goodwill impairment loss	82.5
Ending Balance, Accumulated goodwill impairment loss	82.5
E&C Cryogenics
Goodwill
Beginning Balance, Goodwill	176.2
Foreign currency translation adjustments	(1.0)
Ending Balance, Goodwill	175.2
Beginning Balance, Accumulated goodwill impairment loss	40.9
Ending Balance, Accumulated goodwill impairment loss	40.9
E&C FinFans
Goodwill
Beginning Balance, Goodwill	399.6
Foreign currency translation adjustments	(0.3)
Ending Balance, Goodwill	399.3
Beginning Balance, Accumulated goodwill impairment loss	23.7
Ending Balance, Accumulated goodwill impairment loss	$ 23.7

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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