Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Revenue:
Product revenue	$ 87,404	$ 101,164	$ 281,393	$ 284,865
Service revenue	114,116	98,200	329,188	285,790
Total revenue	201,520	199,364	610,581	570,655
Costs and expenses:
Product costs	29,116	37,048	103,818	98,128
Service costs	36,166	33,091	105,772	96,469
Research and development, net	27,732	28,464	86,330	81,640
Selling, general and administrative	101,793	96,700	284,935	294,740
Other operating expenses:
Litigation settlements	0	4,880	0	4,880
Total costs and expenses	194,807	200,183	580,855	575,857
Income (loss) from operations	6,713	(819)	29,726	(5,202)
Interest income	130	387	392	2,111
Interest expense	(7,818)	(7,909)	(23,240)	(24,571)
Loss on extinguishment of debt	0	0	0	(8,136)
Other (expense) income, net	(130)	(1,101)	577	13,617
(Loss) income before income tax (provision) benefit	(1,105)	(9,442)	7,455	(22,181)
Income tax (provision) benefit	(5,462)	4,317	(25,950)	(19,314)
Net loss from continuing operations	(6,567)	(5,125)	(18,495)	(41,495)
Income (loss) from discontinued operations, net of tax	14,800	47,392	(14,823)	(5,245)
Net income (loss)	8,233	42,267	(33,318)	(46,740)
Less: Net income attributable to noncontrolling interest	(4,549)	(6,577)	(21,113)	(16,462)
Net income (loss) attributable to Comverse Technology, Inc.	3,684	35,690	(54,431)	(63,202)
Weighted average common shares outstanding:
Basic and diluted	219,238,541	205,886,126	219,068,912	205,890,586
Basic and diluted earnings (loss) per share
Continuing operations	$ (0.05)	$ (0.05)	$ (0.18)	$ (0.27)
Discontinued operations	$ 0.07	$ 0.22	$ (0.07)	$ (0.04)
Basic and diluted earnings (loss) per share	$ 0.02	$ 0.17	$ (0.25)	$ (0.31)
Net loss attributable to Comverse Technology, Inc.
Net loss from continuing operations	(10,960)	(11,083)	(38,442)	(55,932)
Income (loss) from discontinued operations, net of tax	$ 14,644	$ 46,773	$ (15,989)	$ (7,270)