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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Earnings Per Share [Abstract]    
Net earnings attributable to Modine $ 14.3 $ 2.3
Weighted-average shares outstanding - basic (in shares) 52.2 51.8
Effect of dilutive securities (in shares) 0.2 0.7
Weighted-average shares outstanding - diluted (in shares) 52.4 52.5
Earnings per Share [Abstract]    
Net earnings per share - basic (in dollars per share) $ 0.27 $ 0.04
Net earnings per share - diluted (in dollars per share) $ 0.27 $ 0.04
Stock Options [Member]    
Earnings Per Share [Abstract]    
Antidilutive securities excluded from computation of earning per share (in shares) 0.9 0.3
Restricted Stock [Member]    
Earnings Per Share [Abstract]    
Antidilutive securities excluded from computation of earning per share (in shares) 0.5 0.2