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Investments - JCP Fund V - Narrative (Details) - USD ($) $ in Thousands	Feb. 28, 2026	Nov. 30, 2025
Schedule of Equity Method Investments [Line Items]
Financial instruments owned	$ 28,079,458	$ 27,722,739
Jefferies Capital Partners V L.P.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	11.00%
SBI USA Fund L.P.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%
JCP Fund V
Schedule of Equity Method Investments [Line Items]
Ownership percentage	35.10%
Financial instruments owned	$ 2,800
Equity investments	85,000	85,000
Unfunded portion of equity commitment to subsidiary	$ 8,700	$ 8,700

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