NET (LOSS) INCOME PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions				5 Months Ended
	Apr. 06, 2021	May 07, 2020	Dec. 04, 2019	Jan. 21, 2022	Jan. 31, 2022	Apr. 09, 2021	Feb. 01, 2021	Jan. 31, 2021	Jun. 18, 2014
Class of Stock [Line Items]
Warrants outstanding (in shares)					0
Convertible Preferred Stock
Class of Stock [Line Items]
Sale of stock, consideration received on transaction			$ 400.0
Series A Preferred Stock
Class of Stock [Line Items]
Sale of stock, consideration received on transaction		$ 200.0
Series A Preferred Stock | Series A Private Placement
Class of Stock [Line Items]
Sale of stock, consideration received on transaction		$ 200.0
Series B Preferred Stock
Class of Stock [Line Items]
Sale of stock, consideration received on transaction	$ 200.0
Series B Preferred Stock | Series B Private Placement
Class of Stock [Line Items]
Sale of stock, consideration received on transaction	$ 200.0
2021 Notes
Class of Stock [Line Items]
Conversion price (in dollars per share)	$ 62.08					$ 62.08
Capped calls, initial cap price (in dollars per share)	$ 100.00
2014 Notes
Class of Stock [Line Items]
Conversion price (in dollars per share)							$ 40.55	$ 64.46
Exercise price of warrants (in dollars per share)							$ 47.18		$ 75.00
Number of shares of common stock upon conversion							9,541,000	6,002,000
Warrants, number of underlying common shares (in shares)							9,865,000		6,205,000
Warrants issued (in shares)				293,143
Warrants exercised on a cashless basis (in shares)				5,031,000