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Fair Value Disclosures - Fair Value Option Gains (Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Feb. 28, 2026 | Feb. 28, 2025
Financial instruments owned: |  |
Loans and other receivables | $ (28,722) | $ 13,283
Other secured financings: |  |
Financial instruments sold, not yet purchased and Long-term debt |  |
Other changes in fair value | (309) | 1,938
Long-term debt |  |
Financial instruments sold, not yet purchased and Long-term debt |  |
Other changes in fair value | (58,916) | 16,944
Changes in instrument-specific credit risk | $ 77,896 | $ 37,898

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