Exit Costs - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 31, 2015	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Restructuring and Related Activities [Abstract]
Pre-tax losses of disposal business		$ 1,900	$ 134,700	$ 145,400
Line of credit reduced borrowing capacity	$ 750,000
Unamortized deferred origination costs			3,800
Non-cash restructuring costs		$ 341	$ 28,700