CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Sales	$ 897.9	$ 412.1	$ 2,337.5	$ 1,171.0
Cost of sales	621.7	307.5	1,631.4	887.9
Gross profit	276.2	104.6	706.1	283.1
Selling, general, and administrative expenses	122.8	52.3	356.4	159.3
Amortization expense	49.0	10.6	115.0	32.4
Operating expenses	171.8	62.9	471.4	191.7
Operating income	104.4	41.7	234.7	91.4
Acquisition related finance fees	0.0	0.0	26.1	0.0
Interest expense, net	85.7	5.7	190.7	13.3
Financing costs amortization	4.8	0.7	12.0	2.1
Unrealized loss (gain) on investments in equity securities	5.2	(1.3)	11.8	10.9
Realized gain on equity method investment	0.0	0.0	0.0	(0.3)
Foreign currency gain	(2.9)	(2.5)	(8.1)	(2.6)
Other expense (income)	1.1	(0.7)	2.7	(1.5)
Income (loss) from continuing operations before income taxes and equity in earnings (loss) of unconsolidated affiliates, net	10.5	39.8	(0.5)	69.5
Income tax expense (benefit)	0.1	(1.6)	(4.2)	4.0
Income from continuing operations before equity in earnings (loss) of unconsolidated affiliates, net	10.4	41.4	3.7	65.5
Equity in earnings (loss) of unconsolidated affiliates, net	1.3	0.2	2.4	(0.3)
Net income from continuing operations	11.7	41.6	6.1	65.2
Loss from discontinued operations, net of tax	(6.0)	0.0	(2.6)	0.0
Net income	5.7	41.6	3.5	65.2
Less: Income attributable to noncontrolling interests of continuing operations, net of taxes	2.3	0.4	6.0	0.8
Net income (loss) attributable to Chart Industries, Inc.	3.4	41.2	(2.5)	64.4
Amounts attributable to Chart common stockholders
Income from continuing operations	9.4	41.2	0.1	64.4
Less: Mandatory convertible preferred stock dividend requirement	6.8	0.0	20.5	0.0
Income (loss) from continuing operations attributable to Chart	2.6	41.2	(20.4)	64.4
Loss from discontinued operations, net of tax	(6.0)	0.0	(2.6)	0.0
Net (loss) income attributable to Chart common stockholders	(3.4)	41.2	(23.0)	64.4
Net (loss) income attributable to Chart common stockholders	$ (3.4)	$ 41.2	$ (23.0)	$ 64.4
Basic earnings per common share attributable to Chart Industries, Inc.
Income (loss) from continuing operations (usd per share)	$ 0.06	$ 1.15	$ (0.49)	$ 1.80
Loss from discontinued operations (usd per share)	(0.14)	0	(0.06)	0
Net (loss) income attributable to Chart Industries, Inc. - Basic (usd per share)	(0.08)	1.15	(0.55)	1.80
Diluted earnings per common share attributable to Chart Industries, Inc.
Income (loss) from continuing operations (usd per share)	0.05	0.98	(0.49)	1.56
Loss from discontinued operations (usd per share)	(0.12)	0	(0.06)	0
Net (loss) income attributable to Chart Industries, Inc. - Diluted (usd per share)	$ (0.07)	$ 0.98	$ (0.55)	$ 1.56
Weighted-average number of common shares outstanding:
Basic (shares)	41,980	35,870	41,960	35,850
Diluted (shares)	47,610	41,860	41,960	41,400
Comprehensive (loss) income, net of taxes	$ (42.1)	$ 9.2	$ (42.4)	$ (4.6)
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of taxes	2.4	(0.1)	5.5	(0.1)
Comprehensive (loss) income attributable to Chart Industries, Inc., net of taxes	$ (44.5)	$ 9.3	$ (47.9)	$ (4.5)