CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 661.5	$ 622.4
Cost of sales	498.9	494.5
Gross profit	162.6	127.9
Selling, general and administrative expenses	82.8	61.4
Restructuring expenses	5.4	0.0
Operating income	74.4	66.5
Interest expense	(7.5)	(5.9)
Other expense - net	(0.3)	(0.6)
Earnings before income taxes	66.6	60.0
Provision for income taxes	(18.8)	(14.7)
Net earnings	47.8	45.3
Net earnings attributable to noncontrolling interest	(0.5)	(0.5)
Net earnings attributable to Modine	$ 47.3	$ 44.8
Net earnings per share attributable to Modine shareholders:
Basic (in dollars per share)	$ 0.9	$ 0.86
Diluted (in dollars per share)	$ 0.88	$ 0.85
Weighted-average shares outstanding:
Basic (in shares)	52.5	52.3
Diluted (in shares)	53.9	53.0