Document and Entity Information - shares
 3 Months Ended
Apr. 30, 2018
May 15, 2018
Document And Entity Information    
Entity Registrant Name VERINT SYSTEMS INC  
Entity Central Index Key 0001166388  
Current Fiscal Year End Date --01-31  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Apr. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Common Stock, Shares Outstanding   64,012,017