Borrowings - Notes Payable and Short-Term Borrowings (Details) - USD ($)	Oct. 31, 2021	Oct. 31, 2020
Notes Payable and Short-Term Borrowings
Current portion of long-term debt	$ 2,613,000,000	$ 2,768,000,000
Short term borrowings	$ 3,552,000,000	$ 3,755,000,000
Current portion of long-term debt, weighted average interest rate (as a percent)	2.10%	2.00%
Asset-backed Securities
Notes Payable and Short-Term Borrowings
Current portion of long-term debt	$ 1,200,000,000
Commercial paper
Notes Payable and Short-Term Borrowings
Commercial paper	705,000,000	$ 677,000,000
Short term borrowings	$ 0	$ 0
Weighted-Average Interest Rate	(0.30%)	0.00%
Notes payable to banks, lines of credit and other
Notes Payable and Short-Term Borrowings
Notes payable to banks, lines of credit and other	$ 234,000,000	$ 310,000,000
Weighted-Average Interest Rate	1.00%	1.30%

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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