Investments - Berkadia - Narrative (Details) - Berkadia - USD ($) $ in Millions	Nov. 30, 2021	Nov. 30, 2020	Oct. 01, 2018
Schedule of Equity Method Investments [Line Items]
Percentage of profits received from joint venture			45.00%
Purchase commitment amount	$ 425.6	$ 401.0
Jefferies Financial Group Inc. | Affiliated entity
Schedule of Equity Method Investments [Line Items]
Ownership percentage			50.00%