Document and Entity Information - shares	9 Months Ended
	Dec. 31, 2015	Jan. 29, 2016
Document and Entity Information
Entity Registrant Name	KEMET CORP
Entity Central Index Key	0000887730
Document Type	10-Q
Document Period End Date	Dec. 31, 2015
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		45,859,263
Document Fiscal Year Focus	2016
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q3