Loans to and Investments in Associated Companies - Activity Related to Other Transactions with Jefferies Finance (Details) - Jefferies Finance - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
May 31, 2022 |
May 31, 2021 |
May 31, 2022 |
May 31, 2021 |
|
| Investments In Associated Companies [Line Items] | ||||
| Origination and syndication fee revenues | $ 41.9 | $ 145.4 | $ 156.8 | $ 215.7 |
| Origination fee expenses | 11.4 | 20.5 | 27.3 | 32.8 |
| CLO placement fee revenues | 1.2 | 1.3 | 1.9 | 3.7 |
| Underwriting fees | 0.0 | 0.0 | 0.0 | 0.5 |
| Service fees | $ 15.8 | $ 14.0 | $ 65.8 | $ 45.5 |