Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net income attributable to Chart Industries, Inc.
Net income attributable to Chart Industries, Inc.	$ 41.2	$ 14.9	$ 64.4	$ 47.0
Earnings per common share:
Basic (usd per share)	$ 1.15	$ 0.42	$ 1.80	$ 1.32
Diluted (usd per share)	$ 0.98	$ 0.36	$ 1.56	$ 1.15
Weighted average number of common shares outstanding — basic (shares)	35,870	35,620	35,850	35,590
Incremental shares issuable upon assumed conversion and exercise of share-based awards (shares)	280	350	260	330
Incremental shares issuable due to dilutive effect of convertible (shares)	3,010	2,900	2,820	2,710
Incremental shares issuable due to dilutive effect of warrants (shares)	2,700	2,570	2,470	2,330
Weighted average number of common shares outstanding – diluted (shares)	41,860	41,440	41,400	40,960