Total Equity - Schedule of Accumulated Other Comprehensive Income Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 2,551,942	$ 1,780,564
Compensation and benefits	(926,871)	(703,058)
Net earnings	156,392	129,324
Income tax expense	(55,959)	(28,694)
Principal transactions
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	640,736	497,246
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net earnings	1,998	(643)
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	(700)	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	2,119	(246)
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	(121)	(397)
Income tax expense	$ 31	$ 49