v2.4.0.8
Document and Entity Information
9 Months Ended
Dec. 31, 2014
Jan. 30, 2015
Entity Information [Line Items]    
Entity Registrant Name STERIS CORP  
Entity Central Index Key 0000815065  
Document Type 10-Q  
Document Period End Date Dec. 31, 2014  
Amendment Flag false  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --03-31  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   59,574,771