CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net earnings	$ 46.4	$ 46.9	$ 94.2	$ 92.2
Other comprehensive income (loss), net of income taxes:
Foreign currency translation	21.1	(12.7)	14.1	(13.5)
Defined benefit plans, net of income taxes of $0.2, $0.3, $0.5 and $0.5 million	0.8	0.8	1.6	1.6
Cash flow hedges, net of income taxes of $0.1, ($0.1), $0.1 and ($0.3) million	0.2	(0.2)	0.2	(0.9)
Total other comprehensive income (loss)	22.1	(12.1)	15.9	(12.8)
Comprehensive income	68.5	34.8	110.1	79.4
Comprehensive income attributable to noncontrolling interest	(0.7)	(0.4)	(1.1)	(0.7)
Comprehensive income attributable to Modine	$ 67.8	$ 34.4	$ 109.0	$ 78.7