Related Party Transactions - Narrative (Details) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
	Oct. 24, 2022	Nov. 30, 2022	Nov. 30, 2021		Nov. 30, 2020		Nov. 03, 2020
Related Party Transaction [Line Items]
Revenues		$ 7,149,263	$ 8,945,464	[1]	$ 6,880,447	[1]
Disposal group, disposed of by sale, not discontinued operations | Sale of subsidiary
Related Party Transaction [Line Items]
Sale of subsidiary							$ 180,700
Investment Banking
Related Party Transaction [Line Items]
Revenues		2,807,822	4,365,699	[1]	2,501,494	[1]
Co-sponsored Companies | Investment Banking
Related Party Transaction [Line Items]
Revenues			45,500
Officers And Employees
Related Party Transaction [Line Items]
Investments in and loans to related parties		$ 17,700	$ 23,100
Officer
Related Party Transaction [Line Items]
Number of shares repurchased during period (in shares)	640
Stock repurchased during period	$ 21,000
Director
Related Party Transaction [Line Items]
Investment in related party					$ 800

[1] See Note 1 for a description of financial statement presentation changes made as a result of our Merger with Jefferies Group.