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Document and Entity Information (USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended
Sep. 30, 2012
Nov. 01, 2012
Sep. 30, 2011
Document and Entity Information [Abstract]      
Entity Registrant Name MODINE MANUFACTURING CO    
Entity Central Index Key 0000067347    
Current Fiscal Year End Date --03-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 424
Entity Common Stock, Shares Outstanding   47,198,088  
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q2    
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 30, 2012