Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	0 Months Ended	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended							3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	12 Months Ended	1 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012 CTI	May 25, 2007 Verint	Oct. 31, 2012 Verint	Oct. 31, 2011 Verint	Oct. 31, 2012 Verint	Oct. 31, 2011 Verint	Aug. 04, 2011 Verint	Oct. 31, 2012 Restricted Stock Awards CTI	Oct. 31, 2011 Restricted Stock Awards CTI	Oct. 31, 2012 Restricted Stock Awards CTI Y	Oct. 31, 2011 Restricted Stock Awards CTI	Oct. 31, 2012 Restricted Stock Awards Verint Y	Oct. 31, 2011 Restricted Stock Awards Verint	Oct. 31, 2012 Phantom Stock Units (RSUs) Verint	Oct. 31, 2011 Phantom Stock Units (RSUs) Verint	Jan. 31, 2012 Phantom Stock Units (RSUs) Verint	Oct. 31, 2012 DSU Awards CTI	Oct. 31, 2012 DSU Awards CTI	Oct. 31, 2012 Stock Options CTI Y	Oct. 31, 2011 Stock Options CTI	Oct. 31, 2012 Stock Options CTI Y	Oct. 31, 2011 Stock Options CTI	Jul. 31, 2012 2012 Stock Bonus Program Verint	Jan. 31, 2012 2012 Stock Bonus Program Verint	Aug. 31, 2012 2013 Stock Bonus Program Verint	Oct. 31, 2012 2013 Stock Bonus Program Verint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2,200,000	$ 1,100,000	$ 6,000,000	$ 3,000,000
Filing period for periodic reports (in months)					12 months
Number of deferred stock units granted (in shares)												95,242		3,701,696							35,000	1,360,116	296,356		1,385,000
Shares issued upon exercise of stock options (in shares)																							4,562		9,064
Value of shares issued upon exercise of stock options			49,000	1,861,000
Outstanding stock options (in shares)											42,000	4,428,943		4,428,943		1,500,000	1,500,000						3,772,076		3,772,076
Shares available for future grants (in shares)					16,960,924
Total fair value of vested restricted awards												700,000	400,000	7,200,000	9,200,000
Unrecognized compensation expense for nonvested awards												22,600,000		22,600,000		34,500,000							2,500,000		2,500,000
Weighted-average period of remaining nonvested awards (in years)														2.19		2.1									2.67
Shares of common stock available to purchase related to unvested stock options (in shares)																							1,385,000		1,385,000
Weighted-average grant date fair value of unvested stock options (per share)																							$ 2.01		$ 2.01
Expected term of unvested stock options (in years)																							4
Fair value of unvested stock options																							2,800,000		2,800,000
Fair value of stock options vested during period																							0	0	300,000	400,000
Converted into stock options to purchase of common stock (in shares)						3,100,000
Shares of common stock issued pursuant to stock option exercises (in shares)							19,000	55,000	78,000	487,000
Total proceeds received upon exercise of stock options							400,000	1,000,000	1,400,000	9,700,000
Stock options exercisable							1,000,000		1,000,000
Options outstanding but not exercisable							20,000		20,000
Granted in period (shares)																1,200,000	900,000
Weighted-average grant date fair value (per share)																$ 31.52	$ 31.52
Total cash payments upon vesting of phantom stock units																		2,300,000	10,300,000
Accrued liabilities for stock bonus program																		200,000		1,900,000
Authorized shares under plan (in shares)																												150,000	150,000
Discount when awards are calculated (percent)																												20.00%	15.00%
Total accrued liability for stock compensation plan																												3,200,000		2,000,000
Shares of common stock earned during period (in shares)																												132,000
Cash payments to settle awards																											$ 100,000