CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 364.2	$ 339.9	$ 740.0	$ 690.3
Cost of sales	307.0	287.4	620.9	586.1
Gross profit	57.2	52.5	119.1	104.2
Selling, general and administrative expenses	46.0	41.3	88.4	84.5
Restructuring expenses	0.6	1.3	1.1	5.9
Impairment charges	0	16.7	0	16.7
Operating income (loss)	10.6	(6.8)	29.6	(2.9)
Interest expense	(3.2)	(3.4)	(6.2)	(6.4)
Other income (expense) - net	0	0.2	(0.5)	0.3
Earnings (loss) from continuing operations before income taxes	7.4	(10.0)	22.9	(9.0)
Provision for income taxes	(2.4)	(1.9)	(7.3)	(3.9)
Earnings (loss) from continuing operations	5.0	(11.9)	15.6	(12.9)
Earnings from discontinued operations, net of income taxes	0	0	0	0.1
Net earnings (loss)	5.0	(11.9)	15.6	(12.8)
Net earnings attributable to noncontrolling interest	(0.4)	(0.3)	(1.0)	(0.6)
Net earnings (loss) attributable to Modine	$ 4.6	$ (12.2)	$ 14.6	$ (13.4)
Earnings (loss) per share from continuing operations attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.10	$ (0.26)	$ 0.31	$ (0.29)
Diluted (in dollars per share)	$ 0.10	$ (0.26)	$ 0.31	$ (0.29)
Net earnings (loss) per share attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.10	$ (0.26)	$ 0.31	$ (0.29)
Diluted (in dollars per share)	$ 0.10	$ (0.26)	$ 0.31	$ (0.29)
Weighted average shares outstanding:
Basic (in shares)	46.8	46.6	46.8	46.6
Diluted (in shares)	47.6	46.6	47.4	46.6