Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Nov. 30, 2024
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Assets Acquired - finite-lived intangible assets	$ 663		$ 61,299
Impairment losses - indefinite lived intangible assets			(10)
Accumulated amortization - finite lived intangible assets	(190,125)		(176,644)
Total gross costs - intangible assets	402,721		341,726
Total net carrying amount - intangible assets	213,259		226,371
OpNet
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets increase (decrease)		$ 39,300
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	8,678		8,715
Assets Acquired - indefinite-lived intangible assets	0		0
Impairment losses - indefinite lived intangible assets			(10)
Net carrying amount - indefinite lived intangible assets	8,678		8,705
Customer relationships
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	161,576		136,049
Assets Acquired - finite-lived intangible assets	622		26,450
Impairment losses - indefinite lived intangible assets			0
Accumulated amortization - finite lived intangible assets	(107,035)		(104,539)
Net carrying amount - finite lived intangible assets	$ 55,163		$ 57,960
Weighted Average Remaining Lives (Years)	5 years 3 months 18 days		5 years 7 months 6 days
Trademarks and trade names
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	$ 156,418		$ 146,032
Assets Acquired - finite-lived intangible assets	0		8,533
Impairment losses - indefinite lived intangible assets			0
Accumulated amortization - finite lived intangible assets	(49,634)		(45,412)
Net carrying amount - finite lived intangible assets	$ 106,784		$ 109,153
Weighted Average Remaining Lives (Years)	21 years 2 months 12 days		21 years 4 months 24 days
Other
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross costs - finite lived intangible assets	$ 76,049		$ 50,930
Assets Acquired - finite-lived intangible assets	41		26,316
Impairment losses - indefinite lived intangible assets			0
Accumulated amortization - finite lived intangible assets	(33,456)		(26,693)
Net carrying amount - finite lived intangible assets	$ 42,634		$ 50,553
Weighted Average Remaining Lives (Years)	3 years 7 months 6 days		3 years 10 months 24 days