Business Combinations (Schedule of Unaudited Pro Forma Total Revenue and Net Income (Loss) (Details) (Verint Segment [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
Apr. 30, 2011
Verint Segment [Member]
Business Acquisition [Line Items]
Total revenue	$ 352,874
Net loss attributable to Comverse Technology Inc.	$ (62,093)

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463

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