Income Taxes - Schedule of Income before Income Tax, U.S. and non-U.S. (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021		Nov. 30, 2020
Income Tax Disclosure [Abstract]
U.S.	$ 801,047	$ 1,970,625		$ 813,305
Non-U.S.	254,515	283,480		253,778
Earnings before income taxes	$ 1,055,562	$ 2,254,105	[1]	$ 1,067,083	[1]

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