CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net (loss) earnings	$ (1.0)	$ 22.8	$ 131.9
Other comprehensive income (loss):
Foreign currency translation	4.6	(68.2)	9.7
Defined benefit plans, net of income taxes of $11.8, ($13.2) and $9.8 million	19.7	(26.7)	13.9
Cash flow hedges, net of income taxes of $0, $0 and $0.6 million	0.0	0.0	1.1
Total other comprehensive income (loss)	24.3	(94.9)	24.7
Comprehensive income (loss)	23.3	(72.1)	156.6
Comprehensive income attributable to noncontrolling interest	(0.5)	(0.8)	(1.7)
Comprehensive income (loss) attributable to Modine	$ 22.8	$ (72.9)	$ 154.9