Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	May 31, 2016	Nov. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Total gross costs - intangible assets	$ 269,674	$ 270,852
Accumulated amortization - finite lived intangible assets	(50,908)	(45,069)
Disposals - indefinite lived intangible assets	(1,379)
Total net carrying amount - intangible assets	217,387	225,783
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	127,210	127,667
Accumulated amortization - finite lived intangible assets	(38,787)	(34,754)
Net carrying amount - finite lived intangible assets	$ 88,423	$ 92,913
Weighted average remaining lives (years)	12 years 5 months	12 years 10 months 23 days
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	$ 130,537	$ 131,288
Accumulated amortization - finite lived intangible assets	(12,121)	(10,315)
Net carrying amount - finite lived intangible assets	$ 118,416	$ 120,973
Weighted average remaining lives (years)	31 years 9 months	32 years 3 months 18 days
Exchange and Clearing Organization Membership Interests and Registrations [Member]
Finite-Lived Intangible Assets [Line Items]
Gross costs - indefinite lived intangible assets	$ 11,927	$ 11,897
Accumulated amortization - finite lived intangible assets		0
Disposals - indefinite lived intangible assets	(1,379)
Net carrying amount - indefinite lived intangible assets	$ 10,548	$ 11,897