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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Earnings Per Share [Abstract]    
Net earnings attributable to Modine $ 47.3 $ 44.8
Weighted-average shares outstanding - basic (in shares) 52.5 52.3
Effect of dilutive securities (in shares) 1.4 0.7
Weighted-average shares outstanding - diluted (in shares) 53.9 53.0
Earnings per Share [Abstract]    
Net earnings per share - basic (in dollars per share) $ 0.9 $ 0.86
Net earnings per share - diluted (in dollars per share) $ 0.88 $ 0.85
Earnings Per Share [Abstract]    
Antidilutive securities excluded from computation of earnings per share (in shares) 0.0  
Restricted Stock [Member]    
Earnings Per Share [Abstract]    
Antidilutive securities excluded from computation of earnings per share (in shares)   0.1