Document and Entity Information	3 Months Ended
Apr. 30, 2011	May 31, 2011
Document and Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2011
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Entity Registrant Name	COMVERSE TECHNOLOGY INC/NY/
Entity Central Index Key	0000803014
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		204,991,843

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