CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 515.5	$ 347.2
Cost of sales	427.0	284.9
Gross profit	88.5	62.3
Selling, general and administrative expenses	59.2	44.2
Restructuring expenses	1.7	2.3
Operating income	27.6	15.8
Interest expense	(6.6)	(3.0)
Other expense - net	(0.9)	(0.9)
Earnings before income taxes	20.1	11.9
Provision for income taxes	(2.7)	(3.0)
Net earnings	17.4	8.9
Net earnings attributable to noncontrolling interest	(0.4)	(0.3)
Net earnings attributable to Modine	$ 17.0	$ 8.6
Net earnings per share attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.34	$ 0.18
Diluted (in dollars per share)	$ 0.34	$ 0.18
Weighted-average shares outstanding:
Basic (in shares)	49.5	46.9
Diluted (in shares)	50.1	47.2