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Financial Instruments - Amounts Recorded in the Balance Sheet (Details) - Notes payable and short-term borrowings - USD ($) $ in Millions | Apr. 30, 2025 | Oct. 31, 2024
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Derivatives, Fair Value |  |
Carrying Amount of the Hedged Liabilities | $ (2,471) | $ (2,440)
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets | $ 28 | $ 58

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