CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 375.8	$ 350.4
Cost of sales	313.9	298.7
Gross profit	61.9	51.7
Selling, general and administrative expenses	42.4	43.2
Restructuring expenses	0.5	4.6
Operating income	19.0	3.9
Interest expense	(3.0)	(3.0)
Other (expense) income - net	(0.5)	0.1
Earnings from continuing operations before income taxes	15.5	1.0
Provision for income taxes	(4.9)	(2.0)
Earnings (loss) from continuing operations	10.6	(1.0)
Earnings from discontinued operations, net of income taxes	0	0.1
Net earnings (loss)	10.6	(0.9)
Net earnings attributable to noncontrolling interest	(0.6)	(0.3)
Net earnings (loss) attributable to Modine	$ 10.0	$ (1.2)
Earnings (loss) per share from continuing operations attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.21	$ (0.03)
Diluted (in dollars per share)	$ 0.21	$ (0.03)
Net earnings (loss) per share attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.21	$ (0.03)
Diluted (in dollars per share)	$ 0.21	$ (0.03)
Weighted average shares outstanding:
Basic (in shares)	46.7	46.5
Diluted (in shares)	47.3	46.5