2101100 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2401403 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - RECASTING OF PRIOR PERIOD SEGMENT INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 2401404 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - UNBILLED ACCOUNTS RECEIVABLE (Details) link:presentationLink link:calculationLink link:definitionLink 2401402 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - CONSOLIDATION (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - BUSINESS COMBINATIONS link:presentationLink link:calculationLink link:definitionLink 2405406 - Disclosure - BUSINESS COMBINATIONS BUSINESS COMBINATIONS - OTHER BUSINESS COMBINATION INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2017 - CONTACT SOLUTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2405405 - Disclosure - BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2017 - INTANGIBLE ASSETS USEFUL LIVES (Details) link:presentationLink link:calculationLink link:definitionLink 2405403 - Disclosure - BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2017 - OPINIONLAB (Details) link:presentationLink link:calculationLink link:definitionLink 2405404 - Disclosure - BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2017 - PURCHASE PRICE ALLOCATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - BUSINESS COMBINATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2119100 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2419403 - Disclosure - COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES - LITIGATION (Details) link:presentationLink link:calculationLink link:definitionLink 2319301 - Disclosure - COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2419402 - Disclosure - COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES - WARRANTY OBLIGATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1001501 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1006000 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Condensed Consolidated Statements of Comprehensive (Loss) Income link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Condensed Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - Condensed Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 2114100 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 2414403 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS - ASSETS AND LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2414404 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS - CASH FLOW HEDGES (Details) link:presentationLink link:calculationLink link:definitionLink 2414402 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS DERIVATIVE FINANCIAL INSTRUMENTS - INTEREST RATE SWAP AGREEMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2414405 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS DERIVATIVE FINANCIAL INSTRUMENTS - NOT DESIGNATED AT HEDGING INSTRUMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2314301 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 2413403 - Disclosure - FAIR VALUE MEASUREMENTS - CONTINGENT CONSIDERATION TABLE (Details) link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS - OPTION TO ACQUIRE NONCONTROLLING INTERESTS (Details) link:presentationLink link:calculationLink link:definitionLink 2413402 - Disclosure - FAIR VALUE MEASUREMENTS - FAIR VALUE TABLE (Details) link:presentationLink link:calculationLink link:definitionLink 2413405 - Disclosure - FAIR VALUE MEASUREMENTS - OTHER FAIR VALUE DISCLOSURES (Details) link:presentationLink link:calculationLink link:definitionLink 2313301 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2412401 - Disclosure - INCOME TAXES INCOME TAXES - PROVISION FOR INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 2412402 - Disclosure - INCOME TAXES INCOME TAXES - UNRECOGNIZED TAX BENEFITS (Details) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - INTANGIBLE ASSETS AND GOODWILL link:presentationLink link:calculationLink link:definitionLink 2406406 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - GOODWILL (Details) link:presentationLink link:calculationLink link:definitionLink 2406404 - Disclosure - INTANGIBLE ASSETS AND GOODWILL INTANGIBLE ASSETS AND GOODWILL - AMORTIZATION AND IMPAIRMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2406405 - Disclosure - INTANGIBLE ASSETS AND GOODWILL INTANGIBLE ASSETS AND GOODWILL - FUTURE AMORTIZATION OF INTANGIBLE ASSETS (Details) link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - INTANGIBLE ASSETS AND GOODWILL INTANGIBLE ASSETS AND GOODWILL - INTANGIBLE ASSETS BY REPORTABLE SEGMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - INTANGIBLE ASSETS (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - LONG-TERM DEBT link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - LONG-TERM DEBT - 1.50% CONVERTIBLE SENIOR NOTES (Details) link:presentationLink link:calculationLink link:definitionLink 2407406 - Disclosure - LONG-TERM DEBT - CREDIT AGREEMENT - INTEREST RATE AND FEE DETAILS (Details) link:presentationLink link:calculationLink link:definitionLink 2407405 - Disclosure - LONG-TERM DEBT - CREDIT AGREEMENT - SUMMARY (Details) link:presentationLink link:calculationLink link:definitionLink 2407407 - Disclosure - LONG-TERM DEBT - DEBT COVENANT (Details) link:presentationLink link:calculationLink link:definitionLink 2407408 - Disclosure - LONG-TERM DEBT - FUTURE AMORTIZATION (Details) link:presentationLink link:calculationLink link:definitionLink 2407409 - Disclosure - LONG-TERM DEBT - INTEREST EXPENSE (Details) link:presentationLink link:calculationLink link:definitionLink 2407404 - Disclosure - LONG-TERM DEBT - NOTE HEDGES AND WARRANTS (Details) link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - LONG-TERM DEBT - SUMMARY (Details) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - LONG-TERM DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. link:presentationLink link:calculationLink link:definitionLink 2402403 - Disclosure - NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. - ANTIDILUTIVE SECURITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. - CALCULATION (Details) link:presentationLink link:calculationLink link:definitionLink 2402404 - Disclosure - NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. - OTHER DETAILS (Details) link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - NET LOSS PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. (Tables) link:presentationLink link:calculationLink link:definitionLink 2120100 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 2420402 - Disclosure - SEGMENT INFORMATION SEGMENT INFORMATION - CHANGE IN SEGMENTATION (Details) link:presentationLink link:calculationLink link:definitionLink 2420404 - Disclosure - SEGMENT INFORMATION SEGMENT INFORMATION - CORRECTION OF MISSTATEMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2420403 - Disclosure - SEGMENT INFORMATION - SEGMENT OPERATING RESULTS (Details) link:presentationLink link:calculationLink link:definitionLink 2320301 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - BONUS SHARE PROGRAM (Details) link:presentationLink link:calculationLink link:definitionLink 2415405 - Disclosure - STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - PERFORMANCE RESTRICTED STOCK UNITS (Details) link:presentationLink link:calculationLink link:definitionLink 2415404 - Disclosure - STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - RESTRICTED STOCK UNITS (Details) link:presentationLink link:calculationLink link:definitionLink 2415402 - Disclosure - STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - STOCK-BASED COMPENSATION - BY LINE ITEM (Details) link:presentationLink link:calculationLink link:definitionLink 2415403 - Disclosure - STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - STOCK-BASED COMPENSATION - BY TYPE (Details) link:presentationLink link:calculationLink link:definitionLink 2415406 - Disclosure - STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - STOCK BONUS PROGRAM - (Details) link:presentationLink link:calculationLink link:definitionLink 2315301 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 2409406 - Disclosure - STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - AMOUNTS RECLASSIFIED OUT OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - DIVIDENDS ON COMMON STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 2409405 - Disclosure - STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - SCHEDULE OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) link:presentationLink link:calculationLink link:definitionLink 2409403 - Disclosure - STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - SHARE REPURCHASE PROGRAM (Details) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - STOCKHOLDERS' EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 2409404 - Disclosure - STOCKHOLDERS' EQUITY - TREASURY STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION - INVENTORIES (Details) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION - CASH FLOW INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 2408403 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION - OTHER (EXPENSE) INCOME (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink