Total Equity - Schedule of Accumulated Other Comprehensive Income Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 2,516,296	$ 1,651,182	$ 5,068,238	$ 3,431,746
Compensation and benefits	(861,993)	(575,868)	(1,788,864)	(1,278,926)
Net earnings	154,687	8,684	311,079	138,008
Income tax expense	(73,107)	(9,235)	(129,066)	(37,929)
Principal transactions
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	416,195	320,959	1,056,931	818,205
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net earnings	426	(67)	2,453	(710)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Net unrealized losses related to instrument-specific credit risk
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	(200)		(900)	100
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Net unrealized losses related to instrument-specific credit risk | Principal transactions
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	516	82	2,633	(164)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Net minimum pension liability
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Compensation and benefits	$ (90)	$ (149)	(180)	(546)
Income tax expense			$ 100	$ 100