Organization and Basis of Presentation (Details) $ in Thousands	3 Months Ended
	Feb. 28, 2022 USD ($) segment	Feb. 28, 2021 USD ($)	Dec. 01, 2021 USD ($)	Nov. 30, 2021 USD ($)
Accounting Policies [Abstract]
Number of reportable segments | segment	2
Subsidiary or Equity Method Investee [Line Items]
Total assets	$ 55,899,398			$ 54,768,900
Total liabilities	48,132,387			47,690,292
Total equity	7,767,011	$ 6,555,631		$ 7,078,608
Contributions from Jefferies Financial Group Inc.	$ 60,332	$ 153,557
Jefferies Financial Group Inc. | Foursight Capital
Subsidiary or Equity Method Investee [Line Items]
Total assets			$ 1,270,000
Total liabilities			800,400
Total equity			$ 476,500