CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 1,352.5	$ 1,496.4	$ 1,477.6
Cost of sales	1,129.0	1,249.9	1,239.4
Gross profit	223.5	246.5	238.2
Selling, general and administrative expenses	204.5	184.5	181.7
Restructuring expenses	16.6	4.7	16.1
Impairment charges	9.9	7.8	3.2
Gain on sale of wind tunnel	0.0	(3.2)	0.0
Operating (loss) income	(7.5)	52.7	37.2
Interest expense	(11.1)	(11.7)	(12.4)
Other income (expense) - net	8.7	0.2	(0.8)
(Loss) earnings from continuing operations before income taxes	(9.9)	41.2	24.0
Benefit (provision) for income taxes	8.9	(19.0)	107.9
(Loss) earnings from continuing operations	(1.0)	22.2	131.9
Earnings from discontinued operations, net of income taxes	0.0	0.6	0.0
Net (loss) earnings	(1.0)	22.8	131.9
Net earnings attributable to noncontrolling interest	(0.6)	(1.0)	(1.5)
Net (loss) earnings attributable to Modine	$ (1.6)	$ 21.8	$ 130.4
(Loss) earnings per share from continuing operations attributable to Modine shareholders:
Basic (in dollars per share)	$ (0.03)	$ 0.45	$ 2.75
Diluted (in dollars per share)	(0.03)	0.44	2.72
Net (loss) earnings per share attributable to Modine shareholders:
Basic (in dollars per share)	(0.03)	0.46	2.75
Diluted (in dollars per share)	$ (0.03)	$ 0.45	$ 2.72
Weighted average shares outstanding:
Basic (in shares)	47.3	47.2	46.9
Diluted (in shares)	47.3	47.8	47.6