Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Goodwill And Intangible Assets [Abstract ]
Intangible asset amortization expense	$ 11.3	$ 7.3	$ 5.6
Amortizable intangible assets average remaining life, in years	11 years