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 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 among segments.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reporting Unit
-URI http://asc.fasb.org/extlink&oid=6523643

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- Details

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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=vrnt_CommunicationsAndCyberIntelligenceSolutionsMember
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- Details

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- Details

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INTANGIBLE ASSETS AND GOODWILL INTANGIBLE ASSETS AND GOODWILL - GOODWILL REALLOCATION (Details) $ in Millions	3 Months Ended	6 Months Ended	9 Months Ended
	Oct. 31, 2016 segment	Jul. 31, 2016 segment	Oct. 31, 2016 USD ($)
Goodwill activity
Number of Reportable Segments \| segment	2	3
Number of Reporting Units	3
Customer Engagement
Goodwill activity
Goodwill - Reallocated in Response to Change in Segmentation			$ 26.5
Cyber Intelligence
Goodwill activity
Goodwill - Reallocated in Response to Change in Segmentation			11.4
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)