| Document and Entity Information | May 07, 2020 |
| Cover [Abstract] | |
| Entity Registrant Name | VERINT SYSTEMS INC |
| Entity Address, State or Province | NY |
| Amendment Flag | false |
| Entity Central Index Key | 0001166388 |
| Current Fiscal Year End Date | --01-31 |
| Document Type | 8-K |
| Document Period End Date | May 7, 2020 |
| Entity File Number | 001-34807 |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 11-3200514 |
| Entity Address, Address Line One | 175 Broadhollow Road |
| Entity Address, City or Town | Melville, |
| Entity Address, Postal Zip Code | 11747 |
| City Area Code | (631) |
| Local Phone Number | 962-9600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.001 par value per share |
| Trading Symbol | VRNT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
