CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net earnings	$ 2.0	$ 5.0	$ 16.1	$ 15.6
Other comprehensive (loss) income:
Foreign currency translation	(24.5)	10.2	(22.8)	5.9
Defined benefit plans, net of income taxes of $0.4, $0, $0.9 and $0	0.9	1.2	1.8	2.5
Cash flow hedges, net of income taxes of $0	0	0.1	0	0.2
Total other comprehensive (loss) income	(23.6)	11.5	(21.0)	8.6
Comprehensive (loss) income	(21.6)	16.5	(4.9)	24.2
Comprehensive income attributable to noncontrolling interest	(0.1)	(0.4)	(0.7)	(1.0)
Comprehensive (loss) income attributable to Modine	$ (21.7)	$ 16.1	$ (5.6)	$ 23.2