v3.25.2
FAIR VALUE, Level 3 Financial Assets and Liabilities, Roll Forward (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Trading assets        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Location of gains (losses) included in earnings     Principal transactions Principal transactions
Changes in Level 3 recurring fair value measurements, assets [Roll Forward]        
Fair value beginning of period $ 1 $ 4 $ 3 $ 4
Total gains/(losses) included in earnings 1 0 2 0
Purchases and contributions 27 31 66 60
Sales and distributions (27) (22) (69) (51)
Transfers:        
Into Level 3 0 0 0 0
Out of Level 3 0 0 0 0
Fair value end of period 2 13 2 13
Unrealized gains/(losses) for the period included in earnings for instruments held at the end of the reporting period 0 (1) 0 $ (1)
Derivative assets        
Changes in Level 3 recurring fair value measurements, assets [Roll Forward]        
Fair value beginning of period 6   4  
Total gains/(losses) included in earnings (5)   (3)  
Purchases and contributions 0   0  
Sales and distributions 0   0  
Transfers:        
Into Level 3 0   0  
Out of Level 3 0   0  
Fair value end of period 1   1  
Unrealized gains/(losses) for the period included in earnings for instruments held at the end of the reporting period (5)   $ (2)  
Other investments        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Location of gains (losses) included in earnings     Revenue from contract with customer Revenue from contract with customer
Changes in Level 3 recurring fair value measurements, assets [Roll Forward]        
Fair value beginning of period 7 29 $ 7 $ 30
Total gains/(losses) included in earnings 0 0 0 (1)
Purchases and contributions 0 0 0 0
Sales and distributions 0 0 0 0
Transfers:        
Into Level 3 0 0 0 0
Out of Level 3 0 0 0 0
Fair value end of period 7 29 7 29
Unrealized gains/(losses) for the period included in earnings for instruments held at the end of the reporting period $ 0 $ 0 $ 0 $ 0