Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange ownership interest and registrations, impairment loss	$ 66	$ 768
Goodwill	1,645,317	1,646,933	$ 1,643,599
Goodwill impairment	400	3,000	0
Exchange and clearing organization membership interests and registrations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange ownership interest and registrations, impairment loss	66	468
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	0	0
Goodwill impairment	400	3,000
Gross costs - finite lived intangible assets		0
Impairment of intangible assets, finite-lived		300
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, fair value	0	0
Finite-lived intangible assets, fair value disclosure		0
Nonrecurring | Exchange and clearing organization membership interests and registrations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange ownership interest and registrations, carrying value	1,935	1,974	2,443
Exchange ownership interest and registrations, impairment loss	66	468	291
Nonrecurring | Exchange and clearing organization membership interests and registrations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange ownership interest and registrations, fair value	$ 1,935	$ 1,974	$ 2,443