Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Details) $ in Thousands	12 Months Ended
	Nov. 30, 2022 USD ($)	Nov. 30, 2021 USD ($)	Nov. 30, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange ownership interest and registrations, impairment loss	$ 39	$ 66
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other expenses	Other expenses	Other expenses
Discount rate/yield
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other expenses	Other expenses
Discount rate/yield | Real Estate Property
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input	0.120
Discount rate/yield | Oil and Gas Properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Oil and gas properties, measurement input	0.100
Discount rate/yield | Minimum | Equity Method Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments, measurement input	0.100
Discount rate/yield | Maximum | Equity Method Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments, measurement input	0.230
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	$ 39	$ 66
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Investments in and loans to related parties	27,119		$ 55,612
Impairment of intangible assets, finite-lived			300
Impairment of other assets	6,701		46,200
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in and loans to related party, fair value disclosure	0		0
Finite-lived intangible assets, fair value disclosure			0
Other assets, fair value disclosure	0
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in and loans to related party, fair value disclosure	106,172		0
Finite-lived intangible assets, fair value disclosure			0
Other assets, fair value disclosure	1,709		36,400
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, impairment loss	39	66	468
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	0	1,935	1,974
Nonrecurring | Exchange and clearing organization membership interests and registrations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange ownership interest and registrations, fair value	$ 0	$ 0	$ 0