Revenues from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2022
May 31, 2021
May 31, 2022
May 31, 2021
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 1,132,957 $ 1,492,353 $ 2,539,999 $ 2,924,996
Americas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 959,623 1,230,520 2,128,354 2,448,652
Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 107,041 197,732 273,771 362,167
Asia Pacific        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 66,293 64,101 137,874 114,177
Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 856,076 1,223,343 2,030,577 2,463,893
Reportable Segments | Investment Banking and Capital Markets | Americas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 683,804 962,556 1,620,874 1,989,422
Reportable Segments | Investment Banking and Capital Markets | Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 106,392 196,891 272,564 360,628
Reportable Segments | Investment Banking and Capital Markets | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 65,880 63,896 137,139 113,843
Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,300 2,315 15,869 9,741
Reportable Segments | Asset Management | Americas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,300 2,011 15,869 9,108
Reportable Segments | Asset Management | Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 304 0 633
Reportable Segments | Asset Management | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 274,092 266,714 494,201 451,550
Reportable Segments | Merchant Banking | Americas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 273,030 265,972 492,259 450,310
Reportable Segments | Merchant Banking | Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 649 537 1,207 906
Reportable Segments | Merchant Banking | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 413 205 735 334
Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Reportable Segments | Corporate | Americas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Reportable Segments | Corporate | Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Reportable Segments | Corporate | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers (511) (19) (648) (188)
Reconciling Items -Consolidation Adjustments | Americas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers (511) (19) (648) (188)
Reconciling Items -Consolidation Adjustments | Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Reconciling Items -Consolidation Adjustments | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Advisory        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 371,760 390,508 915,529 701,947
Investment Banking - Advisory | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 371,760 390,508 915,529 701,947
Investment Banking - Advisory | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Advisory | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Advisory | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Advisory | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Underwriting        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 229,099 610,192 630,378 1,302,365
Investment Banking - Underwriting | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 229,455 610,192 630,734 1,302,365
Investment Banking - Underwriting | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Underwriting | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Underwriting | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Investment Banking - Underwriting | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers (356) 0 (356) 0
Equities        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 251,278 219,836 477,209 453,206
Equities | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 251,433 219,855 477,501 453,394
Equities | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Equities | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Equities | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Equities | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers (155) (19) (292) (188)
Fixed Income        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,428 2,788 6,813 6,187
Fixed Income | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,428 2,788 6,813 6,187
Fixed Income | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Fixed Income | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Fixed Income | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Fixed Income | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,300 2,315 15,869 9,741
Asset Management | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Asset Management | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,300 2,315 15,869 9,741
Asset Management | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Asset Management | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Asset Management | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Manufacturing revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 166,028 184,092 307,136 321,939
Manufacturing revenues | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Manufacturing revenues | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Manufacturing revenues | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 166,028 184,092 307,136 321,939
Manufacturing revenues | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Manufacturing revenues | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Oil and gas revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 83,240 45,032 141,159 77,041
Oil and gas revenues | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Oil and gas revenues | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Oil and gas revenues | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 83,240 45,032 141,159 77,041
Oil and gas revenues | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Oil and gas revenues | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 24,824 37,590 45,906 52,570
Other revenues | Reportable Segments | Investment Banking and Capital Markets        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Other revenues | Reportable Segments | Asset Management        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Other revenues | Reportable Segments | Merchant Banking        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 24,824 37,590 45,906 52,570
Other revenues | Reportable Segments | Corporate        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Other revenues | Reconciling Items -Consolidation Adjustments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 0 $ 0 $ 0 $ 0