CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 60.9	$ 309.5	$ 46.8
Other comprehensive (loss) income:
Foreign currency translation adjustments	(29.0)	38.8	(7.5)
Defined benefit pension plan:
Actuarial gain (loss) on remeasurement	5.9	(1.9)	0.3
Amortization of net loss	1.0	1.2	1.3
Defined benefit pension plan	6.9	(0.7)	1.6
Other comprehensive (loss) income, before tax	(22.1)	38.1	(5.9)
Income tax (expense) benefit related to defined benefit pension plan	(2.0)	0.2	(0.1)
Other comprehensive (loss) income, net of taxes	(24.1)	38.3	(6.0)
Comprehensive income	36.8	347.8	40.8
Less: Comprehensive income attributable to noncontrolling interests, net of taxes	(1.8)	(1.4)	(0.4)
Comprehensive income attributable to Chart Industries, Inc.	$ 35.0	$ 346.4	$ 40.4