Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands			12 Months Ended
	Aug. 01, 2016	Aug. 01, 2015	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill			$ 1,640,653	$ 1,656,588	$ 1,662,636
Impairment losses			1,284	1,289
Aggregate amortization expense			12,000	12,200	$ 12,800
Exchange and clearing organization membership interests and registrations [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment losses	$ 1,300	$ 1,300	1,284	1,289
Capital Markets [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill			$ 1,637,653	$ 1,653,588