Business Combinations (Pro Forma Adjusted Summary) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2011	Nov. 30, 2010
Business Combinations [Abstract]
Pro forma adjusted total revenue	$ 933,720	$ 803,008
Pro forma adjusted net income attributable to TIBCO Software Inc.	$ 109,699	$ 69,449
Pro forma adjusted net income per share attributable to TIBCO Software Inc.: Basic	$ 0.68	$ 0.43
Pro forma adjusted net income per share attributable to TIBCO Software Inc.: Diluted	$ 0.63	$ 0.41