CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 334.0	$ 377.3	$ 680.1	$ 769.8
Cost of sales	288.3	320.6	577.4	645.4
Gross profit	45.7	56.7	102.7	124.4
Selling, general and administrative expenses	76.8	47.8	119.6	90.6
Restructuring expenses	1.0	1.0	3.6	1.8
Operating (loss) income	(32.1)	7.9	(20.5)	32.0
Interest expense	(2.7)	(3.0)	(5.5)	(6.1)
Other (expense) income - net	(0.1)	0.5	(0.1)	0.3
(Loss) earnings before income taxes	(34.9)	5.4	(26.1)	26.2
Benefit (provision) for income taxes	12.4	(3.4)	9.1	(10.1)
Net (loss) earnings	(22.5)	2.0	(17.0)	16.1
Net earnings attributable to noncontrolling interest	0.0	(0.3)	(0.4)	(0.7)
Net (loss) earnings attributable to Modine	$ (22.5)	$ 1.7	$ (17.4)	$ 15.4
Net (loss) earnings per share attributable to Modine shareholders:
Basic (in dollars per share)	$ (0.47)	$ 0.04	$ (0.37)	$ 0.32
Diluted (in dollars per share)	$ (0.47)	$ 0.04	$ (0.37)	$ 0.32
Weighted - average shares outstanding:
Basic (in shares)	47.4	47.2	47.4	47.1
Diluted (in shares)	47.4	47.7	47.4	47.7