Business Combinations - Pro Forma Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Acquisition, Pro Forma Information
Pro forma sales from continuing operations	$ 897.9	$ 817.8
Pro forma net income (loss) attributable to Chart Industries, Inc. from continuing operations	$ 9.4	$ (21.2)
Howden Industries
Business Acquisition, Pro Forma Information
Pro forma sales from continuing operations			$ 2,642.7	$ 2,392.1
Pro forma net income (loss) attributable to Chart Industries, Inc. from continuing operations			$ (53.9)	$ (111.3)