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Accounting for Leases as a Lessor - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Lessor, Lease, Description [Line Items]    
Financing receivable term, low end of range 2 years  
Financing receivable term, high end of range 5 years  
Sold $ 142 $ 103
Long-term financing receivables and other assets    
Lessor, Lease, Description [Line Items]    
Amount transferred via securitization 1,100 1,200
Leased Equipment    
Lessor, Lease, Description [Line Items]    
Amount transferred via securitization $ 720 $ 675