Condensed Consolidated Balance Sheets (USD $) In Thousands	3 Months Ended	12 Months Ended
	Apr. 30, 2011	Jan. 31, 2011
ASSETS
Cash and cash equivalents	$ 515,301	$ 581,390
Restricted cash and bank time deposits	72,500	73,117
Auction rate securities	72,432	72,441
Accounts receivable, net of allowance of $11,584 and $13,237, respectively	301,760	319,628
Inventories, net	72,805	66,612
Deferred cost of revenue	45,228	51,470
Deferred income taxes	40,346	39,644
Prepaid expenses and other current assets	87,899	91,760
Total current assets	1,208,271	1,296,062
Property and equipment, net	68,366	66,843
Goodwill	986,814	967,224
Intangible assets, net	190,520	196,460
Deferred cost of revenue	154,926	158,703
Deferred income taxes	20,901	20,766
Other assets	113,391	107,864
Total assets	2,743,189	2,813,922
LIABILITIES AND EQUITY
Accounts payable and accrued expenses	367,654	401,940
Convertible debt obligations	2,195	2,195
Deferred revenue	546,354	559,873
Deferred income taxes	13,614	13,661
Bank loans	4,500	6,000
Litigation settlement	146,150	146,150
Income taxes payable	11,134	11,486
Other current liabilities	50,193	50,280
Total current liabilities	1,141,794	1,191,585
Bank loans	592,500	583,234
Deferred revenue	271,925	270,934
Deferred income taxes	52,533	52,953
Other long-term liabilities	234,572	229,329
Total liabilities	2,293,324	2,328,035
Commitments and contingencies
Equity:
Common stock, $0.10 par value - authorized, 600,000,000 shares; issued 205,571,253 and 204,937,882 shares, respectively; outstanding, 204,967,843 and 204,533,916 shares, respectively	20,557	20,494
Treasury stock, at cost, 603,410 and 403,966 shares, respectively	(4,909)	(3,484)
Additional paid-in capital	2,100,484	2,088,717
Accumulated deficit	(1,766,833)	(1,707,638)
Accumulated other comprehensive income	16,858	14,919
Total Comverse Technology, Inc. shareholders' equity	366,157	413,008
Noncontrolling interest	83,708	72,879
Total equity	449,865	485,887
Total liabilities and equity	$ 2,743,189	$ 2,813,922