Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 28, 2021	Nov. 30, 2020
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Total gross costs - intangible assets	$ 264,135	$ 262,804
Accumulated amortization - finite lived intangible assets	(107,896)	(104,361)
Total net carrying amount - intangible assets	156,239	158,443
Exchange and clearing organization membership interests and registrations
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross costs - indefinite lived intangible assets	7,923	7,884
Net carrying amount - indefinite lived intangible assets	7,923	7,884
Customer relationships
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	126,608	126,080
Accumulated amortization - finite lived intangible assets	(78,216)	(75,776)
Net carrying amount - finite lived intangible assets	$ 48,392	$ 50,304
Weighted average remaining lives (years)	9 years 3 months 18 days	9 years 4 months 24 days
Trade name
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	$ 129,604	$ 128,840
Accumulated amortization - finite lived intangible assets	(29,680)	(28,585)
Net carrying amount - finite lived intangible assets	$ 99,924	$ 100,255
Weighted average remaining lives (years)	27 years	27 years 3 months 18 days