Goodwill And Other Acquired Intangible Assets (Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2011		Nov. 30, 2010
Goodwill [Line Items]
Beginning balance	$ 409,545		$ 374,285
Foreign currency translation	3,213		(8,069)
Ending balance	451,821		409,545
Foresight Corporation [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition			21,717
Netrics.Com, Inc. [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition			3,873
Kabira Technologies, Inc. [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition			2,085
Goodwill adjusted for the acquisition	464	[1]
Proginet Corporation [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition			9,664
Goodwill adjusted for the acquisition	205	[1]
OpenSpirit Corporation [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition			5,990
Goodwill adjusted for the acquisition	(689)	[1]
Nimbus Partners Limited [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition	27,117
Loyalty Lab, Inc. [Member]
Goodwill [Line Items]
Goodwill recorded for the acquisition	12,355
Goodwill adjusted for the acquisition	$ (389)	[1]

[1] Pursuant to the business combinations accounting guidance, we record goodwill adjustments for the effect on goodwill changes to net assets acquired during the measurement period (up to one year from the date of an acquisition). Goodwill adjustments were not significant to our previously reported operating results or financial position.