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Investments - Summary of Selected Financial Information for Jefferies Finance (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
May 31, 2025 | May 31, 2024 | May 31, 2025 | May 31, 2024 | Nov. 30, 2024
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Total assets | $ 67,285,344 |  | $ 67,285,344 |  | $ 64,360,309
Total liabilities | 56,902,764 |  | 56,902,764 |  | 54,134,916
Total mezzanine equity | 406 |  | 406 |  | 406
Net earnings (losses) attributable to members | 91,395 | $ 154,687 | 228,244 | $ 311,079 |
Jefferies Finance |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Total assets | 6,073,600 |  | 6,073,600 |  | 5,762,600
Total liabilities | 4,732,800 |  | 4,732,800 |  | 4,415,600
Total mezzanine equity | 13,900 |  | 13,900 |  | 14,400
Net earnings (losses) attributable to members | 100 | 40,200 | (1,600) | 39,300 |
Jefferies Finance |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Unfunded commitment fees | 300 | 300 | 600 | 600 |
Our total investment balance | 663,500 |  | 663,500 |  | $ 666,300
Origination and syndication fee revenues | 58,400 | 74,900 | 118,600 | 127,300 |
Origination fee expenses | 13,900 | 9,700 | 32,400 | 24,600 |
CLO placement and structuring fee revenues | 1,300 | 300 | 1,500 | 300 |
Placement and referral fees | 9,400 | 400 | 10,000 | 900 |
Asset management fees | 7,500 | 0 | 7,500 | 0 |
Service fees revenue | $ 22,700 | $ 20,800 | $ 77,100 | $ 65,700 |

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