| DOCUMENT AND ENTITY INFORMATION DOCUMENT AND ENTITY INFORMATION | Dec. 04, 2019 |
| Document and Entity Information [Abstract] | |
| Entity Central Index Key | 0001166388 |
| Entity Emerging Growth Company | false |
| Written Communications | false |
| Title of 12(b) Security | Common Stock, $.001 par value per share |
| City Area Code | (631) |
| Entity Address, Address Line One | 175 Broadhollow Road |
| Entity Incorporation, State or Country Code | DE |
| Document Period End Date | Dec. 4, 2019 |
| Document Type | 8-K |
| Entity Registrant Name | Verint Systems Inc |
| Entity File Number | 001-34807 |
| Entity Tax Identification Number | 11-3200514 |
| Entity Address, City or Town | Melville, |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11747 |
| Local Phone Number | 962-9600 |
| Trading Symbol | VRNT |
| Security Exchange Name | NASDAQ |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Amendment Flag | false |
