Accounting Developments (Details) - USD ($) $ in Thousands	Nov. 30, 2022	Nov. 30, 2021	[1]	Dec. 01, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in retained earnings	$ (8,418,354)	$ (7,940,113)
Adjustment for change in accounting principle for current expected credit losses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for credit losses				$ 26,500
Decrease in retained earnings				19,900
Adjustment for change in accounting principle for current expected credit losses | Automobile Loan
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for credit losses				$ 30,100

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