Segment Reporting - Net Revenues by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021		Nov. 30, 2020
Revenues
Net revenues	$ 5,978,838	$ 8,013,826	[1]	$ 5,850,521	[1]
Americas
Revenues
Net revenues	4,815,400	6,748,800		4,730,100
Europe
Revenues
Net revenues	925,400	1,045,700		826,400
Asia
Revenues
Net revenues	$ 238,000	$ 219,300		$ 294,000

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