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Securitization Activities - Retained Interests in SPEs (Details) - USD ($) $ in Millions | Aug. 31, 2025 | Nov. 30, 2024
--- | --- | ---
Securitization Vehicles [Line Items] |  |
Total RMBS securitization assets | $ 461.8 | $ 3,956.8
Total CMBS securitization assets | 919.9 | 1,817.1
CLOs | 10,238.3 | 9,001.9
Consumer and other loans | 2,138.2 | 1,424.4
U.S. government agency RMBS |  |
Securitization Vehicles [Line Items] |  |
Retained Interests | 12.6 | 105.7
U.S. government agency CMBS |  |
Securitization Vehicles [Line Items] |  |
Retained Interests | 24.9 | 91.8
CLOs |  |
Securitization Vehicles [Line Items] |  |
Retained Interests | 48.4 | 37.2
Consumer and other loans |  |
Securitization Vehicles [Line Items] |  |
Retained Interests | $ 80.1 | $ 52.1

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