Fair Value Disclosures - Summary of Gains (Losses) Due to Changes in Instrument Specific Credit Risk for Loans and Other Receivables and Loan Commitments Measured at Fair Value under Fair Value Option (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2022
Financial instruments owned:
Loans and other receivables	$ (24,029)	$ 46,421	$ (20,529)
Other secured financings:
Financial instruments sold, not yet purchased and Long-term debt
Other changes in fair value	(4,482)	(2,186)	695
Long-term debt
Financial instruments sold, not yet purchased and Long-term debt
Changes in instrument specific credit risk	(32,580)	(106,801)	63,344
Other changes in fair value	$ (115,912)	$ 21,373	$ 345,050