Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.8.0.1
Document and Entity Information - shares
6 Months Ended
Sep. 30, 2017
Oct. 31, 2017
Document and Entity Information    
Entity Registrant Name KEMET CORP  
Entity Central Index Key 0000887730  
Document Type 10-Q  
Document Period End Date Sep. 30, 2017  
Amendment Flag false  
Current Fiscal Year End Date --03-31  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   56,381,570
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2