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Borrowings - Schedule of Notes Payable and Short-Term Borrowings (Details) - USD ($) $ in Millions | Oct. 31, 2018 | Oct. 31, 2017
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Debt, Current [Abstract] |  |
Current portion of long-term debt | $ 565 | $ 96
Notes payable and short-term borrowings | $ 1,463 | $ 1,072
Weighted-Average Interest Rate |  |
Current portion of long-term debt | 3.10% | 3.50%
Commercial paper |  |
Debt, Current [Abstract] |  |
Commercial paper | $ 854 | $ 943
Weighted-Average Interest Rate |  |
Current portion of long-term debt | 2.50% | 1.80%
Notes payable to banks, lines of credit and other |  |
Debt, Current [Abstract] |  |
Notes payable and short-term borrowings | $ 44 | $ 33
Weighted-Average Interest Rate |  |
Current portion of long-term debt | 1.70% | 1.50%

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