Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Indefinite-lived Intangible Assets [Line Items]
Impairment losses	$ (768)	$ (291)
Accumulated amortization - finite lived intangible assets	(104,361)	(92,057)
Total gross costs - intangible assets	263,572	262,890
Total net carrying amount - intangible assets	158,443	170,542
Customer relationships
Indefinite-lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	126,106	125,736
Impairment losses	(26)
Accumulated amortization - finite lived intangible assets	(75,776)	(67,257)
Net carrying amount - finite lived intangible assets	$ 50,304	$ 58,479
Useful life - finite lived intangible assets	9 years 4 months 24 days	9 years 10 months 24 days
Trade name
Indefinite-lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	$ 129,114	$ 128,590
Impairment losses	(274)
Accumulated amortization - finite lived intangible assets	(28,585)	(24,800)
Net carrying amount - finite lived intangible assets	$ 100,255	$ 103,790
Useful life - finite lived intangible assets	27 years 3 months 18 days	28 years 3 months 18 days
Exchange and clearing organization membership interests and registrations
Indefinite-lived Intangible Assets [Line Items]
Impairment losses	$ (468)	$ (291)
Gross costs - indefinite lived intangible assets	8,352	8,564
Net carrying amount - indefinite lived intangible assets	$ 7,884	$ 8,273