Exit Costs - Additional Information (Details) - USD ($)			12 Months Ended
	Jul. 31, 2015	Jun. 26, 2014	Nov. 30, 2015
Restructuring and Related Activities [Abstract]
Line of credit reduced borrowing capacity	$ 750,000,000	$ 750,000,000.0
Unamortized deferred origination costs			$ 3,800,000
Non-cash restructuring costs			28,700,000
Expected costs			$ 3,100,000