Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Sales	$ 354.1	$ 288.5
Cost of sales	270.4	204.6
Gross profit	83.7	83.9
Selling, general, and administrative expenses	53.5	46.3
Amortization expense	10.1	8.8
Operating expenses	63.6	55.1
Operating income	20.1	28.8
Interest expense, net	3.2	2.0
Unrealized loss (gain) on investments in equity securities	2.6	(3.3)
Financing costs amortization	0.7	1.2
Foreign currency loss	1.6	0.0
Other income	(0.7)	(0.2)
Income before income taxes and equity in (loss) earnings of unconsolidated affiliates, net	12.7	29.1
Income tax expense	2.1	3.1
Income before equity in (loss) earnings of unconsolidated affiliates, net	10.6	26.0
Equity in (loss) earnings of unconsolidated affiliates, net	(0.3)	0.1
Net income	10.3	26.1
Less: Income attributable to noncontrolling interests, net of taxes	0.1	0.5
Net income attributable to Chart Industries, Inc.	$ 10.2	$ 25.6
Net income attributable to Chart Industries, Inc. per common share:
Basic (usd per share)	$ 0.28	$ 0.72
Diluted (usd per share)	$ 0.25	$ 0.63
Weighted-average number of common shares outstanding:
Basic (shares)	35,830	35,550
Diluted (shares)	40,790	40,620
Comprehensive income, net of taxes	$ 4.3	$ 6.9
Less: Comprehensive income attributable to noncontrolling interests, net of taxes	0.1	0.5
Comprehensive income attributable to Chart Industries, Inc., net of taxes	$ 4.2	$ 6.4