CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net earnings	$ 45.1	$ 24.7	$ 137.3	$ 63.3
Other comprehensive income (loss), net of income taxes:
Foreign currency translation	19.4	23.1	5.9	(24.7)
Defined benefit plans, net of income taxes of $0.3, $0, $0.8 and $0 million	0.1	1.3	1.7	4.0
Cash flow hedges, net of income taxes of $0.2, $0.2, ($0.1) and $0.2 million	0.5	1.5	(0.4)	(0.1)
Total other comprehensive income (loss)	20.0	25.9	7.2	(20.8)
Comprehensive income (loss)	65.1	50.6	144.5	42.5
Comprehensive (income) loss attributable to noncontrolling interest	(0.8)	(0.8)	(1.5)	0.2
Comprehensive income (loss) attributable to Modine	$ 64.3	$ 49.8	$ 143.0	$ 42.7