Supplementary Financial Information - Schedule of Transferred Trade Receivables Not Collected from Third Parties (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Trade Receivables Sold and Cash Received [Roll Forward]
Balance at beginning of period	$ 128	$ 121	$ 185	$ 131
Trade receivables sold	3,179	3,002	6,857	5,969
Cash receipts	(3,136)	(2,941)	(6,888)	(5,914)
Foreign currency and other	3	(9)	20	(13)
Balance at end of period	$ 174	$ 173	$ 174	$ 173