CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net (loss) earnings	$ (22.5)	$ 2.0	$ (17.0)	$ 16.1
Other comprehensive income (loss):
Foreign currency translation	(8.6)	(24.5)	0.1	(22.8)
Defined benefit plans, net of income taxes of $12.0, $0.4, $12.6 and $0.9	19.2	0.9	20.4	1.8
Total other comprehensive income (loss)	10.6	(23.6)	20.5	(21.0)
Comprehensive income (loss)	(11.9)	(21.6)	3.5	(4.9)
Comprehensive loss (income) attributable to noncontrolling interest	0.3	(0.1)	(0.1)	(0.7)
Comprehensive income (loss) attributable to Modine	$ (11.6)	$ (21.7)	$ 3.4	$ (5.6)