CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 541.0	$ 494.6
Cost of sales	457.6	421.4
Gross profit	83.4	73.2
Selling, general and administrative expenses	56.3	59.4
Restructuring expenses	1.5	0.3
Impairment charges (reversals) - net	0.0	(1.8)
Loss on sale of assets	0.0	6.6
Operating income	25.6	8.7
Interest expense	(4.1)	(4.2)
Other (expense) income - net	(2.3)	0.2
Earnings before income taxes	19.2	4.7
Provision for income taxes	(4.9)	(1.9)
Net earnings	14.3	2.8
Net earnings attributable to noncontrolling interest	0.0	(0.5)
Net earnings attributable to Modine	$ 14.3	$ 2.3
Net earnings per share attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.27	$ 0.04
Diluted (in dollars per share)	$ 0.27	$ 0.04
Weighted-average shares outstanding:
Basic (in shares)	52.2	51.8
Diluted (in shares)	52.4	52.5