Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
12 Months Ended
Apr. 30, 2011
Jun. 27, 2011
Oct. 29, 2010
Document and Entity Information [Abstract]      
Entity Registrant Name KORN FERRY INTERNATIONAL    
Entity Central Index Key 0000056679    
Document Type 10-K    
Document Period End Date Apr. 30, 2011
Amendment Flag false    
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --04-30    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 929,025,508
Entity Common Stock, Shares Outstanding   47,083,285