Accounting for Leases as a Lessor - Assets and Liabilities of VIE (Details) - VIE Primary Beneficiary - USD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
Variable Interest Entity [Line Items]
Other current assets	$ 163	$ 76
Short-term	586	194
Long-term	711	229
Property, plant and equipment	764	303
Notes payable and short-term borrowings, net of unamortized debt issuance costs	1,018	385
Long-term debt, net of unamortized debt issuance costs	$ 1,057	$ 370