CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net earnings	$ 24.3	$ 0.6	$ 38.6	$ 3.4
Other comprehensive income (loss), net of income taxes:
Foreign currency translation	(23.9)	(8.0)	(47.8)	(2.8)
Defined benefit plans	1.4	1.6	2.7	5.0
Cash flow hedges	0.0	0.0	(1.6)	(0.4)
Total other comprehensive income (loss)	(22.5)	(6.4)	(46.7)	1.8
Comprehensive income (loss)	1.8	(5.8)	(8.1)	5.2
Comprehensive loss (income) attributable to noncontrolling interest	0.6	0.2	1.0	(0.5)
Comprehensive income (loss) attributable to Modine	$ 2.4	$ (5.6)	$ (7.1)	$ 4.7