Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands	Nov. 30, 2015	Nov. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	$ 200,083	$ 78,473
Intangible Assets, Accumulated Amortization	(85,970)	(57,895)
Total	114,113	20,578
Purchased Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	117,151	53,789
Intangible Assets, Accumulated Amortization	(54,963)	(39,575)
Total	62,188	14,214
Customer Related [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	67,602	20,554
Intangible Assets, Accumulated Amortization	(25,493)	(15,195)
Total	42,109	5,359
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	15,330	4,130
Intangible Assets, Accumulated Amortization	(5,514)	(3,125)
Total	$ 9,816	$ 1,005