Document and Entity Information	9 Months Ended
	Dec. 31, 2014	Jan. 30, 2015
Document and Entity Information
Document Period End Date	Dec. 31, 2014
Entity Registrant Name	KEMET CORP
Entity Central Index Key	0000887730
Document Type	10-Q
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		45,428,192
Document Fiscal Year Focus	2014
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q3