CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Common stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Accumulated other comprehensive loss [Member]	Treasury stock, at cost [Member]	Non-controlling interest [Member]	Total
Balance at Mar. 31, 2013	$ 29.9	$ 171.2	$ 207.6	$ (128.4)	$ (14.6)	$ 2.6	$ 268.3
Balance (in shares) at Mar. 31, 2013	47.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss) attributable to Modine	$ 0.0	0.0	130.4	0.0	0.0	0.0	130.4
Other comprehensive income (loss)	0.0	0.0	0.0	24.5	0.0	0.2	24.7
Stock options and awards including related tax benefits	$ 0.3	0.9	0.0	0.0	0.0	0.0	1.2
Stock options and awards including related tax benefits (in shares)	0.5
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(0.6)	0.0	(0.6)
Stock-based compensation expense	0.0	3.6	0.0	0.0	0.0	0.0	3.6
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.5)	(0.5)
Net earnings attributable to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	1.5	1.5
Balance at Mar. 31, 2014	$ 30.2	175.7	338.0	(103.9)	(15.2)	3.8	428.6
Balance (in shares) at Mar. 31, 2014	48.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss) attributable to Modine	$ 0.0	0.0	21.8	0.0	0.0	0.0	21.8
Other comprehensive income (loss)	0.0	0.0	0.0	(94.7)	0.0	(0.2)	(94.9)
Stock options and awards including related tax benefits	$ 0.2	0.9	0.0	0.0	0.0	0.0	1.1
Stock options and awards including related tax benefits (in shares)	0.3
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.0)	0.0	(1.0)
Stock-based compensation expense	0.0	4.0	0.0	0.0	0.0	0.0	4.0
Net earnings attributable to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	1.0	1.0
Balance at Mar. 31, 2015	$ 30.4	180.6	359.8	(198.6)	(16.2)	4.6	$ 360.6
Balance (in shares) at Mar. 31, 2015	48.6						48.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss) attributable to Modine	$ 0.0	0.0	(1.6)	0.0	0.0	0.0	$ (1.6)
Other comprehensive income (loss)	0.0	0.0	0.0	24.4	0.0	(0.1)	24.3
Stock options and awards including related tax benefits	$ 0.2	0.1	0.0	0.0	0.0	0.0	0.3
Stock options and awards including related tax benefits (in shares)	0.4
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(7.8)	0.0	(7.8)
Stock-based compensation expense	0.0	4.9	0.0	0.0	0.0	0.0	4.9
Contribution by noncontrolling interest	0.0	0.0	0.0	0.0	0.0	2.3	2.3
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.9)	(0.9)
Net earnings attributable to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	0.6	0.6
Balance at Mar. 31, 2016	$ 30.6	$ 185.6	$ 358.2	$ (174.2)	$ (24.0)	$ 6.5	$ 382.7
Balance (in shares) at Mar. 31, 2016	49.0						49.0