Accounting for Leases as a Lessor - Components of Financing Receivables (Details) - USD ($) $ in Millions	Jul. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Leases [Abstract]
Minimum lease payments receivable	$ 10,194	$ 10,266
Unguaranteed residual value	680	599
Unearned income	(1,246)	(1,218)
Financing receivables, gross	9,628	9,647
Allowance for credit losses	(206)	(194)	$ (243)
Financing receivables, net	9,422	9,453
Less: current portion	(3,777)	(3,870)
Amounts due after one year, net	$ 5,645	$ 5,583

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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