Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Name:	us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

Name:	us-gaap_CashAcquiredFromAcquisition
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair value, as of the balance sheet date, of potential payments under the contingent consideration arrangement including cash and shares.

No definition available.

Name:	vrnt_BusinessAcquisitionContingentConsiderationFairValueDisclosure
Namespace Prefix:	vrnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Business Acquisition, Cost of Acquired Entity, Transaction Costs During Period

No definition available.

Name:	vrnt_BusinessAcquisitionCostOfAcquiredEntityTransactionCostsDuringPeriod
Namespace Prefix:	vrnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the combined amounts of current and long-term deferred revenue.

No definition available.

Name:	vrnt_DeferredRevenueCurrentandLongTerm
Namespace Prefix:	vrnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the fair value of undelivered performance obligations assumed in a business combination for which payment has not yet been received (backlog).

No definition available.

Name:	vrnt_IntangibleAssetUndeliveredPerformanceObligations
Namespace Prefix:	vrnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Payment Made At Closing To Acquire Businesses

No definition available.

Name:	vrnt_PaymentMadeAtClosingToAcquireBusinesses
Namespace Prefix:	vrnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	us-gaap_StatementBusinessSegmentsAxis=vrnt_CustomerEngagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BusinessAcquisitionAxis=vrnt_OpinionLabInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: