Schedule I (PARENT COMPANY ONLY) - CONDENSED STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands	Nov. 30, 2022	Nov. 30, 2021		Nov. 30, 2020	Nov. 30, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 9,703,109	$ 10,755,133	[1]
Cash and securities segregated and on deposit for regulatory purposes with clearing and depository organizations	957,302	1,015,107
Total cash, cash equivalents and restricted cash	10,707,244	11,828,304		$ 9,664,972	$ 8,480,435
Parent company
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	2,411,270	640,985
Cash and securities segregated and on deposit for regulatory purposes with clearing and depository organizations	57,876	8,219
Total cash, cash equivalents and restricted cash	$ 2,469,146	$ 649,204		$ 1,304,401	$ 170,905

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