Business Combinations - Supplemental Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
VRV
Business Acquisition
Pro forma sales	$ 1,200.0	$ 950.0
Hudson
Business Acquisition
Pro forma sales		984.1	$ 891.8
Pro forma net income attributable to Chart Industries, Inc.		$ 15.0	$ 5.9
Pro forma net income attributable to Chart Industries, Inc. per common share, basic (usd per share)		$ 0.49	$ 0.19
Pro forma net income attributable to Chart Industries, Inc. per common share, diluted (usd per share)		$ 0.48	$ 0.19
Pro forma adjustment, nonrecurring acquisition-related expenses incurred by Chart		$ 9.0
Hudson \| Hudson
Business Acquisition
Pro forma adjustment, nonrecurring acquisition-related expenses incurred by Chart		$ 16.5

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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