v3.26.1
SEGMENT INFORMATION, Information by Segment (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Segment Reporting [Abstract]          
Number of reportable segments | segment     5    
Revenues:          
Non-interest revenues $ 3,302 $ 2,882 $ 6,471 $ 5,890  
Net interest income 557 521 1,123 1,050  
Net revenues 3,859 3,403 7,594 6,940  
Non-interest expenses:          
Compensation, commissions and benefits 2,541 2,204 4,991 4,476  
Bank loan provision for credit losses 5 16 2 16  
All other 578 512 1,138 1,028  
Total non-interest expenses 3,124 2,732 6,131 5,520  
Total pre-tax income 735 671 1,463 1,420  
Total assets:          
Total assets 91,944   91,944   $ 88,230
Operating segments | Private Client Group          
Revenues:          
Non-interest revenues 2,720 2,400 5,397 4,849  
Net interest income 90 86 181 185  
Net revenues 2,810 2,486 5,578 5,034  
Non-interest expenses:          
Compensation, commissions and benefits 2,108 1,799 4,159 3,630  
Bank loan provision for credit losses 0 0 0 0  
All other 286 256 564 511  
Total non-interest expenses 2,394 2,055 4,723 4,141  
Total pre-tax income 416 431 855 893  
Total assets:          
Total assets 14,563   14,563   14,007
Operating segments | Capital Markets          
Revenues:          
Non-interest revenues 462 392 838 869  
Net interest income 2 4 6 7  
Net revenues 464 396 844 876  
Non-interest expenses:          
Compensation, commissions and benefits 293 262 554 563  
Bank loan provision for credit losses 0 0 0 0  
All other 120 98 230 203  
Total non-interest expenses 413 360 784 766  
Total pre-tax income 51 36 60 110  
Total assets:          
Total assets 3,775   3,775   3,426
Operating segments | Asset Management          
Revenues:          
Non-interest revenues 324 286 647 576  
Net interest income 3 3 6 7  
Net revenues 327 289 653 583  
Non-interest expenses:          
Compensation, commissions and benefits 65 57 124 115  
Bank loan provision for credit losses 0 0 0 0  
All other 125 111 249 222  
Total non-interest expenses 190 168 373 337  
Total pre-tax income 137 121 280 246  
Total assets:          
Total assets 595   595   632
Operating segments | Bank          
Revenues:          
Non-interest revenues 14 15 31 26  
Net interest income 472 419 942 833  
Net revenues 486 434 973 859  
Non-interest expenses:          
Compensation, commissions and benefits 47 45 95 91  
Bank loan provision for credit losses 5 16 2 16  
All other 268 256 537 517  
Total non-interest expenses 320 317 634 624  
Total pre-tax income 166 117 339 235  
Total assets:          
Total assets 68,986   68,986   65,263
Operating segments | Other          
Total assets:          
Total assets 4,025   4,025   $ 4,902
Other and intersegment eliminations          
Revenues:          
Non-interest revenues (218) (211) (442) (430)  
Net interest income (10) 9 (12) 18  
Net revenues (228) (202) (454) (412)  
Non-interest expenses:          
Compensation, commissions and benefits 28 41 59 77  
Bank loan provision for credit losses 0 0 0 0  
All other (221) (209) (442) (425)  
Total non-interest expenses (193) (168) (383) (348)  
Total pre-tax income (35) (34) (71) (64)  
Consolidation eliminations          
Non-interest expenses:          
All other $ 187 $ 183 $ 375 $ 370