Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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- Definition

Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

+ Details

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- Details

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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=vrnt_CustomerEngagementMember
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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=vrnt_CommunicationsAndCyberIntelligenceSolutionsMember
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INTANGIBLE ASSETS AND GOODWILL INTANGIBLE ASSETS AND GOODWILL - GOODWILL REALLOCATION (Details) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2018 segment	Jan. 31, 2017 USD ($)
Goodwill activity
Number of Reportable Segments	2	2
Number of Reporting Units	3
Gross Goodwill \| Customer Engagement
Goodwill activity
Goodwill - Reallocated in Response to Change in Segmentation			$ 51.8
Gross Goodwill \| Cyber Intelligence
Goodwill activity
Goodwill - Reallocated in Response to Change in Segmentation			22.2
Goodwill - Accumulated Impairment Losses \| Customer Engagement
Goodwill activity
Goodwill - Reallocated in Response to Change in Segmentation			(25.3)
Goodwill - Accumulated Impairment Losses \| Cyber Intelligence
Goodwill activity
Goodwill - Reallocated in Response to Change in Segmentation			$ (10.8)