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Derivative Instruments and Hedging Activities - Effects of Derivative Instruments on the Condensed Consolidated Statements of Income and Changes in AOCI (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2022 | Mar. 31, 2021
Derivatives Not Designated as Hedging Instruments |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | $ 599 | $ 148 | $ 342 | $ 241
Interest rate contracts | Derivatives designated as hedging instruments: | Cash Flow Hedges |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in AOCI | 36 | 6 | 48 | 6
Interest rate contracts | Derivatives designated as hedging instruments: | Interest expense | Cash Flow Hedges |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Loss Reclassified from AOCI into Income | (7) | (6) | (13) | (13)
Foreign currency contracts | Derivatives designated as hedging instruments: | Net Investment Hedging |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Foreign currency contracts | 11 | 7 | 11 | (1)
Foreign currency contracts | Derivatives Not Designated as Hedging Instruments | Other non-operating income (expense), net |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | 7 | 17 | 15 | (3)
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Revenues |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | (7) | (2) | 1 | 1
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Cost of sales |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | 599 | 135 | 326 | 238
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Operating and administrative expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | $ 0 | $ (2) |  |
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Other operating income, net |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income |  |  | $ 0 | $ 5

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