Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2022		Nov. 30, 2021
Goodwill [Roll Forward]
Balance, at beginning of period	$ 1,745,098	[1]	$ 1,746,314
Currency translation and other adjustments	(8,984)		(1,216)
Balance, at end of period	1,736,114		1,745,098	[1]
Investment Banking and Capital Markets
Goodwill [Roll Forward]
Balance, at beginning of period	1,561,928
Balance, at end of period	1,552,944		1,561,928
Asset Management
Goodwill [Roll Forward]
Balance, at beginning of period	183,170
Balance, at end of period	$ 183,170		$ 183,170

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