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Accounting for Leases as a Lessee - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Lessee, Lease, Description [Line Items]    
Net gain from sale and leaseback transaction $ 3 $ 41
Amount of operating leases that have not yet commenced $ 16  
Minimum    
Lessee, Lease, Description [Line Items]    
Term of operating leases not yet commenced 1 year  
Maximum    
Lessee, Lease, Description [Line Items]    
Term of operating leases not yet commenced 10 years