v3.25.1
Derivative Instruments and Hedging Activities - Fair Value of Derivative Assets and Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Sep. 30, 2024
Mar. 31, 2024
Derivative assets:      
Total derivative assets — gross $ 256 $ 140 $ 173
Gross amounts offset in the balance sheet (138) (88) (111)
Cash collateral received (45) (14) (6)
Total derivative assets — net 73 38 56
Derivative liabilities:      
Total derivative liabilities — gross (171) (183) (226)
Gross amounts offset in the balance sheet 138 88 111
Cash collateral pledged 0 36 56
Total derivative liabilities — net (33) (59) (59)
Commodity contracts      
Derivative assets:      
Total derivative assets — gross 19 4 8
Derivative liabilities:      
Total derivative liabilities — gross 0 (1) (14)
Derivatives designated as hedging instruments:      
Derivative assets:      
Total derivative assets — gross 13 7 22
Derivatives designated as hedging instruments: | Foreign currency contracts      
Derivative assets:      
Total derivative assets — gross 12 6 11
Derivatives designated as hedging instruments: | Interest rate contracts      
Derivative assets:      
Total derivative assets — gross 1 1 11
Derivative liabilities:      
Total derivative liabilities — gross (11) (22) (3)
Derivatives not designated as hedging instruments:      
Derivative assets:      
Total derivative assets — gross 224 129 143
Derivative liabilities:      
Total derivative liabilities — gross (160) (160) (209)
Derivatives not designated as hedging instruments: | Foreign currency contracts      
Derivative assets:      
Total derivative assets — gross 2 0 5
Derivative liabilities:      
Total derivative liabilities — gross (1) (9) (1)
Derivatives not designated as hedging instruments: | Commodity contracts      
Derivative assets:      
Total derivative assets — gross 222 129 138
Derivative liabilities:      
Total derivative liabilities — gross $ (159) $ (151) $ (208)