Leases - Lease Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Lessor, Lease, Description [Line Items]
Finance Lease	$ 7	$ 11	$ 14	$ 18
Operating Leases	30	28	58	56
Sales of manufactured products, net
Lessor, Lease, Description [Line Items]
Finance Lease	0	0	0	0
Operating Leases	6	4	12	12
Finance revenues
Lessor, Lease, Description [Line Items]
Finance Lease	7	11	14	18
Operating Leases	22	22	43	41
Other expense, net
Lessor, Lease, Description [Line Items]
Finance Lease	0	0	0	0
Operating Leases	$ 2	$ 2	$ 3	$ 3