v3.26.3
Total Equity - Accumulated Other Comprehensive Income (Loss) Reclassifications (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Revenues $ 3,230,798 $ 2,907,674 $ 9,220,260 $ 7,874,853  
Compensation and benefits (1,192,745) (1,083,510) (3,466,880) (2,779,476)  
Net earnings 288,253 242,504 697,577 470,748  
Income tax (benefit) expense 62,785 89,311 181,226 147,033  
Principal transactions          
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Revenues 468,655 486,893 1,444,819 1,232,630  
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)          
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Net earnings 2,980 2,180 8,459 9,012  
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Net unrealized gains on instrument-specific credit risk at fair value          
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Income tax (benefit) expense 1,000 800 2,800 3,400  
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Net unrealized gains on instrument-specific credit risk at fair value | Principal transactions          
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Revenues 3,135 2,304 8,925 9,962 $ 8,925
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Amortization of defined benefit pension plan actuarial losses          
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Compensation and benefits $ (155) $ (124) (466) (950) $ (466)
Income tax (benefit) expense     $ (100) $ (300)