v3.26.1
DERIVATIVE ASSETS AND DERIVATIVE LIABILITIES, Derivative Asset and Liability Fair Value (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Sep. 30, 2025
Derivative assets    
Derivative assets $ 285 $ 307
Counterparty netting (61) (92)
Cash collateral netting (153) (147)
Total amounts offset (214) (239)
Net amounts presented on the Condensed Consolidated Statements of Financial Condition 71 68
Financial instruments (1) (1)
Total 70 67
Derivative liabilities    
Derivative liabilities 281 313
Counterparty netting (61) (92)
Cash collateral netting (22) (31)
Total amounts offset (83) (123)
Net amounts presented on the Condensed Consolidated Statements of Financial Condition 198 190
Financial instruments 0 0
Total 198 190
Notional amount 23,703 24,173
Derivatives not designated as hedging instruments    
Derivative assets    
Derivative assets 278 306
Derivative liabilities    
Derivative liabilities 281 313
Notional amount 22,045 22,081
Derivatives not designated as hedging instruments | Interest rate    
Derivative assets    
Derivative assets 275 306
Derivative liabilities    
Derivative liabilities 281 309
Notional amount 20,547 20,446
Derivatives not designated as hedging instruments | Foreign exchange    
Derivative assets    
Derivative assets 3 0
Derivative liabilities    
Derivative liabilities 0 2
Notional amount 525 539
Derivatives not designated as hedging instruments | Other    
Derivative assets    
Derivative assets 0 0
Derivative liabilities    
Derivative liabilities 0 2
Notional amount 973 1,096
Derivatives designated as hedging instruments    
Derivative assets    
Derivative assets 7 1
Derivative liabilities    
Derivative liabilities 0 0
Notional amount 1,658 2,092
Derivatives designated as hedging instruments | Interest rate    
Derivative assets    
Derivative assets 0 0
Derivative liabilities    
Derivative liabilities 0 0
Notional amount 400 850
Derivatives designated as hedging instruments | Foreign exchange    
Derivative assets    
Derivative assets 7 1
Derivative liabilities    
Derivative liabilities 0 0
Notional amount $ 1,258 $ 1,242